497results about How to "Reduce water loss" patented technology

The invention provides a feed addictive which comprises the following plant raw materials (by weight portion): hyacinth bean 48-58, broomrape 26-36, lily 18-26, root of pilose asiabell 18-28, Siberian solomonseal rhizome 8-16, dipsacus root 8-16, astragalus root 18-28, Chinese yam 58-68, doddor seed 8-16, walnut 18-28 and hemp seeds 8-16.

The present invention provides a low-temperature cementing slurry system. The slurry system has the characteristics of low density, low temperature early strength and low water loss, and has performances such as thickening time and compressive strength meeting the requirements of deepwater cementing construction site. The low-temperature cementing slurry system comprises the following components by weight: 100 parts of oil well cement, 62-175 parts oil well superfine cement, 7.3-23 parts of nano-silica, 10-32 parts active calcium silicate, 15-50 parts of hollow glass microballoon, 3.6-10 parts of an early strength agent, 3.2-8.6 parts of a fluid loss agent, 0.8-2.0 parts of a dispersing agent and 120-195 parts of water. The low-temperature cementing slurry system has density between 1.30-1.60 g / cm<3>, and is particularly suitable for cementing operations on a deepwater low-temperature surface casing segment. The invention has important significance in reducing the offshore cementing cost, and offshore oil and gas resource exploitation.

The invention relates to a nano-material mixed modified superhigh-temperature high-performance well cementing slurry system and a preparation method thereof. The slurry system comprises the followingingredients in parts by weight: 100 parts of oil well cement, 15-25 parts of coarse silica sand, 15-20 parts of fine silica sand, 1-10 parts of nano-silicon dioxide, 1-10 parts of nano-calcium carbonate, 0.2-1 part of a defoaming agent, 4-10 parts of a fluid loss agent, 0-3 parts of a drag reduction agent, 0.5-4 parts of a retarder and 30-100 parts of water. In the slurry system, set cement has excellent compressive strength and toughness under superhigh temperature, and the compressive strength and the elasticity modulus cannot be obviously changed as the maintenance time is prolonged. The slurry system has good rheological property, lower water loss and proper thickening time, and the comprehensive properties of the slurry system can completely meet the related requirements of site wellcementing construction, so that the technical support is provided for well cementing under high temperature. A nano-material obtained by mixing the nano-silicon dioxide and the nano-calcium carbonateis added, and micropores of the set cement can be effectively filled, so that the system becomes denser. Therefore, the volume shrinkage of the set cement is relieved.

The invention relates to a moisturizing composition, and a preparation method and application thereof, which belong to the field of cosmetics. The moisturizing composition is prepared from the following components in parts by weight: 1.0 to 5.0 parts of sodium hyaluronate, 2.0 to 10.0 parts of carboxymethyl deacetyl chitosan, 30.0 to 60.0 parts of dendrobium officinale extract, and 25.0 to 67.0 parts of deionized water. The moisturizing composition can well form a netted natural biomimetic membrane with skin, the sodium hyaluronate performs the water supplementation and moisturizing in the biomimetic membrane, the carboxymethyl deacetyl chitosan forms a biomimetic sterile membrane, so that natural moisturizing factors such as the sodium hyaluronate can be effectively locked, the water loss rate is decreased; and the dendrobium officinale polysaccharide is combined with the natural biomimetic sterile membrane, so that the moisturizing lasting property after long-term use can be further improved, the restoration effect is improved, and the dryness and allergy problems of the skin can be fundamentally solved. The moisturizing composition has multidimensional efficacy such as moisturizing function, restoration function and skin barrier increasing function.

The invention discloses a polymer nano-silica temperature-resistant, salt-tolerant and fluid loss reducing agent and a preparation method thereof. According to the preparation method, in the presence of nano-silica, a polymer-base nanometer composite material with amphiphilic block hydrophobic associating polymer wrapping inorganic nano-silica is successfully synthesized by virtue of a micellar emulsion polymerization method and combines the rigidity and the heat stability of the inorganic nano-silica and the characteristics of the amphiphilic block hydrophobic associating polymer together, and the temperature resistance, the salt tolerance and the thickening property of the polymer are obviously improved by virtue of the polymer-base nanometer composite material on the basis of the existing good performances of the amphiphilic block hydrophobic associating polymer. As a temperature-resistant, salt-tolerant and fluid loss reducing agent for a drilling fluid in the drilling engineering, the polymer nano-silica temperature-resistant, salt-tolerant and fluid loss reducing agent has a remarkable fluid loss reducing effect under high temperature and high salinity.

The invention relates to a multifunctional enhancement-type concrete admixture and a preparation method thereof. The concrete admixture is composed of an early-strength polycarboxylic acid water reducing agent (PCs) and nano graphene oxide (GO). The mass ratio of the solid to the GO in the early-strength water reducing agent (PCs) is (10-30):1. The early-strength polycarboxylic acid water reducing agent (PCs) is composed of the following components in parts by weight: 80 parts of unsaturated polyether, 8-12 parts of acrylic acid, 1.5-4 parts of monomer with functional groups, 0.5-1.8 parts of chain-transfer agent, 0.6-2 parts of initiator, 0.12-0.3 part of reducer, 8.4-13.2 parts of neutralizing alkali liquor and 150-200 parts of water. The admixture has an obvious enhancement action on concrete, implements high-strength long-service-life green concrete, and has important meanings in the field of application of high-strength high-performance concrete.

The invention discloses high temperature resistance low-density high-strength cement paste which consists of the following components in parts by weight: 100 parts of cement, 23 to 35 parts of lightening admixture, 30 to 40 parts of high temperature strength stabilizer, 10 to 23 parts of filler, 1.5 to 2 parts of dispersing agent, 1 to 2 parts of early strength agent and 8 to 15 parts of fluid loss agent, wherein hollow microspheres are used as the lightening admixture; the high temperature strength stabilizer is high-activity silicon powder; the filler is micro silicon; the dispersing agent is an aldehyde ketone condensation product or a naphthalene dispersing agent; the early strength agent is formed by blending two or more of the following components: sulfo-aluminium sulfate, sodium silicate, basic aluminium chloride and the like; and the fluid loss agent is a sulphonated acetone-formaldehyde condensation product. The low-density cement paste can be used for well cementation of a heavy oil thermal recovery well on a low-pressure formation which is easy to leak, the strength recession of cement stones, which is caused by the high temperature, can also be greatly reduced, and the service life of the oil well is prolonged.

A item separating or debris eliminating system includes a tank and a pump for circulating water from one end of the tank around through a duct and back into the opposite end of the tank. A medium density object collector is located within the tank, and a light debris collector is located within the tank. A conveyor filter is included through which substantially all of the water in the tank is circulated. The debris eliminating system preferably also includes a high density object collector within the tank. The system can be used to separate a variety of objects having different densities and terminal velocities in a fluid. Most preferably, the system is utilized for separating debris from potatoes and the like produce.

The invention discloses high-temperature-resistant high-strength low-density well-cementing cement slurry. The high-temperature-resistant high-strength low-density well-cementing cement slurry is prepared from the following components in parts by weight: 100 parts of G-level oil well cement, 15-76 parts of a lightening admixture, 20-40 parts of micro-silicon, 2-10 parts of a fluid loss agent, 1-8 parts of a dispersing agent, 0-5 parts of a retarder, 0-1.25 parts of a coagulant, 0-5 parts of an anti-fluid-channeling agent, 0.2-0.8 part of an antifoaming agent and 50-120 parts of fresh water, wherein the G-level oil well cement is high sulfate-resistant oil well cement, the lightening admixture is high-performance hollow glass beads. According to the grain grading principle, a series of low-density well-cementing cement slurries with densities of 0.90-1.50g / m<3> are prepared. The low-density well-cementing cement slurry can be used for lowering the density of the cement slurry on the premise of guaranteeing comprehensive performances such as cement slurry strength, good high-temperature high-pressure stability and low water loss, increasing the scope of application of the low-density cement slurry in complex wells such as a deep well, an ultra-deep well and a low-pressure easy-leakage well, and improving the well-cementing quality.

The invention provides a method for producing lactone bean curd. The method comprises the following steps: soy beans with light color of umbilical bean, low oil content, high protein content and plump grain are selected; the soy beans are soaked in water according to that the weight ratio of the soy bean to water is 1 to 2.3 at a temperature of between 10 and 20 DEG C for 12 to 18 hours in spring, or at the temperature of 5 DEG C for 24 hours in winter, or at a temperature of between 25 and 30 DEG C for 6 to 9 hours in summer; the pulping treatment is performed three times, and the weight ratio of the wet soy bean to the water is 1 to 1.8; the mass ratio of the dry soy bean to the raw pulp is 1 to 12; the pulp is boiled at a temperature of between 90 and 110 DEG C for 20 to 40 minutes; the boiled pulp is cooled down to a temperature of between 70 and 80 DEG C for curdling; during the curdling, coagulators of glucolactone solution and shell polyglutamic acid solution are added, the mass of the coagulator glucolactone against the mass of the boiled pulp is between 0.16 and 0.24 percent, and the mass of the chitosan against the mass of the boiled pulp is between 0.008 and 0.05 percent; and the solidification temperature is 70 DEG C, and the solidification time is 30 minutes. The bean curd produced by the method has good water retention property and long guarantee period.

The invention discloses a super battery consisting of plumbic acid capacitance and a preparation method thereof. The super battery comprises a positive plate and a negative plate; a grid of the negative plate is used as a current collector; and 1 to 90 percent of lead plaster in the negative plate of the conventional plumbic acid battery is replaced by active carbon. The invention also discloses a preparation method for the negative plate. The charge receiving capability of the plumbic acid battery of the invention is greatly enhanced, the high-current discharge property is remarkably improved, the water loss of the plumbic acid battery is obviously reduced, and the corrosion of the lead grid of the plumbic acid battery is obviously reduced; the service life is averagely increased by over 80 percent, and the volumetric specific energy reaches 100Wh / l; and the using amount of lead is reduced by 10 to 50 percent, and the consumption of the lead is greatly reduced.

The invention discloses a controllable-respiration preservative film and a preparation method thereof. The method comprises the following steps: dissolving a water-soluble polyhydroxy plasticizer in water, adding the reaction raw material, heating until the raw material is completely dissolved in water, dispersing at high speed, and cooling to 50-70 DEG C to prepare a solution for running filming; and running the solution for running filming onto a steel belt on a running production line via a die head, and drying to obtain the controllable-respiration preservative film. The controllable-respiration preservative film is prepared from the reaction raw materials in percentage by mass: 60-80% of polyvinyl alcohol, 10-30% of water-soluble polyhydroxy plasticizer, 1-5% of moisture respiration regulator, 1-3% of compatilizer, 3-10% of water retention agent and 0.5-3% of assistant. The preservative film has high barrier property for oxygen and nitrogen sources; the bidirectional permeation exchange power for moisture can be effectively regulated and controlled through the raw material formula; and thus, the preservative film can ensure free respiration and moisture exchange of fruits and vegetables in the preservation process.

The invention relates to a water soluble preservative film for fruits and vegetables and a preparation method of the preservative film. The water soluble preservative film for the fruits and vegetables is mainly prepared by the following materials in percentage in weight: 50 to 80% of polyvinyl alcohol with alcoholysis degree of less than 90%; 10 to 30% of polyhydroxy plasticizer, 1 to 5% of auxiliary film forming agent, 3 to 8% of low temperature antifreeze agent, 3 to 10% of adsorbent filling agent and 0.3 to 2% of film-forming adding additive. The preparation method comprises the following two steps of: 1, after metering contents of components of the preservative film in the formula, obtaining a uniform aqueous solution with concentration of 15 to 25% in water; and 2, uniformly casting the prepared solution on a clear steel band, and drying the solution to obtain the film through a dried drying tunnel with temperature of 120 to 180 DEG C. The preservative film has a high barrier property against oxygen, carbon dioxide and nitrogen and the like, and has a high bidirectional permeable exchange capacity for steam, thereby guaranteeing free breathing and water exchange of the fruits and vegetables in a preserving process.

The invention discloses a storage and fresh-keeping comprehensive treatment method for Huangguan pears. The comprehensive treatment method comprises seven steps of harvesting in the optimum period, calcium supplementing treatment, film coating treatment, 1-methylcycloproene treatment, packaging, pre-cooling and refrigerating; and the method comprises the steps of pre-cooling in the harvesting period and after the harvesting period as well as other treatment steps, all the steps are interlocked and indispensable, and the method has a good fresh-keeping effect. The method disclosed by the invention can effectively control the phenomena that the Huangguan pears are softened, wilted and decayed, and have superficial browning spots and thinned flavors, and the like in the process of storage, thereby facilitating the original flavor and quality of fruits.

The invention belongs to the technical field of feed additives, and in particular relates to a Chinese herbal medicine superfine powder feed additive for producing high-quality pork. The additive is prepared from the following Chinese herbal medicines in parts by weight: 3 parts of astragalus root, 3 parts of hairy asiabell root, 3 parts of hawthorn, 3 parts of medicated leaven, 2 parts of dried orange peel, 2 parts of fennel, 2 parts of wild chrysanthemum, 2 parts of cinnamon, 1 part of pine needle, 1 part of liquorice, 2 parts of fleece-flower root and 3 parts of bighead atractylodes rhizome. All the raw materials are weighed according to the prescription proportion; after being mixed, the raw materials are made into superfine powder of 200 meshes; and the use adding amount is 0.75 percent of the total weight of the feed. In the invention, the reasonable compatible Chinese herbal medicines are prepared into the superfine powder, the advantages of the Chinese herbal medicine prescription and superfine powder are fully exerted to achieve the effect of improving pork quality, the pork has the advantages of reduced acidity, bright color, increased marble textures, reduced water lossrate and drip loss, improved tenderness, thinned muscle fibers, obviously increased saturation degree of back fat, and obviously improved muscle saturated fatty acid content and essential fatty acid content, and considerable economic benefits are achieved.

The invention discloses a mango water retention sterilization filming liquid which consists of shellac, glycerol monostearate, sodium carbonate, enestroburin, amino oxyl acetic acid and a solvent, wherein the mass concentration of shellac is 15-20%, the mass concentration of glycerol monostearate is 0.1-0.2%, the mass concentration of sodium carbonate is 0.3-0.5%, the mass concentration of enestroburin is 0.003-0.006% and the mass concentration of amino oxyl acetic acid is 0.001-0.002%. Through the adoption of the mango water retention sterilization filming liquid, the freshness cost is lowered, no cold tolerance pathogenic bacterium is generated, inspiration of mango and growth of bacteria on the surface of mango are inhibited, and rot is prevented. The water retention sterilization filming liquid is good in stability, the mango is not deteriorated after being preserved for half a year, the surface of the mango can be smooth and fresh by using the water retention sterilization filming liquid, the fruit rot rate is less than 3% after 100 days, the driage is less than 12%, and the taste is kept fresh.

The invention relates to a cement paste toughening agent and application of the cement paste toughening agent in preparation of a cementing flexible cement paste. The toughening agent is prepared by modification of rubber powder; the modification of rubber powder includes the steps of cleaning, activating, etching and grafting; the cementing flexible cement paste prepared by the toughening agent is prepared from the following components in parts by weight: 100 parts of portland cement, 5-50 parts of modified rubber powder, 10-40 parts of a toughing agent, 15-80 parts of a density regulator, 35-65 parts of water, 0.5-2 parts of a dispersing agent, 0.5-3 parts of a fluid loss agent, 1.5-4 parts of a retarder and 0.1-2 parts of a defoamer. The inherent performance of a substrate is not changed by plasma treatment on the rubber powder; no pollution is generated; the cement paste toughening agent is simple in process, convenient to operate, stable in hydrophilism through the grafted rubber powder, small in effect from timeliness, and low in handling expense; the flexible cement paste prepared from the modified rubber is good in sedimentation stability; the mechanical property is obviously improved; the cement construction requirements of the scene can be completely met.

The invention discloses a water-retaining method for frozen peeled shrimps, which comprises the following steps of: removing heads and shells of shrimps, sterilizing with ozone water with the ozone concentration of 1-1.5mg / L for 1 to 5 minutes, and controlling the temperature of the ozone water below 10 DEG C; taking the peeled shrimps out, soaking in sterile water containing 0.5 to 0.45 mass percent sodium chloride, 0.25 to 0.75 mass percent food-level trehalose and 0.5 to 1.5 mass percent sodium alginate lysate for 30 to 50 minutes, controlling the water temperature at about 4-10 DEG C and the water amount 1.5 to 2 times weight of the peeled shrimps, taking the peeled shrimps out, and freezing until the core temperature is below -18 DEG C to obtain the frozen peeled shrimp products. In the method, a phosphorus-free water-retaining agent is adopted to process the peeled shrimps for the first time to fulfill the aim of retaining water; and the technology changes the traditional phosphate water-retaining process for the frozen peeled shrimps, solves the problems of water loss and color change in the freezing storage process, avoids the unpleasant metal astringency of the peeled shrimp products and unfavorable human health events caused by the conventional phosphate water-retaining agent, improves the quality appearance and price of the peeled shrimp products, and promotes the economic benefit of the peeled shrimp products.

The invention provides a curable low-density leaking stoppage working fluid and a preparation method. The curable low-density leaking stoppage working fluid is prepared from, by weight, 100 parts of G-grade oil well cement, 44-60 parts of slag, 23-67 parts of lightening admixture, 8-12 parts of micro silicon, 0.4-1.2 parts of dispersant, 4-5 parts of fluid loss agent, 0.4 part of retarder, 1 part of fiber, 131-214 parts of water and 0.5 part of foaming agent. The density of the curable low-density leaking stoppage working fluid is 1.20-1.50 g / cm<3>, the curable low-density leaking stoppage working fluid is high in early strength and thixotropy, free of free water and good in system stability, and the technical problem that a curing body cannot be formed due to bridge plug leaking stoppage in a conventional leaking stoppage method and the cement leaking stoppage cutting body difficultly stays at a leaking layer is solved. After leaking stoppage is carried out, the formation pressure bearing capacity at the leaking layer can be improved, and the technical defects of the existing conventional leaking stoppage method are overcome.

The invention discloses a technology for preventing and treating coal seam roof water damage through dynamic pressure maintaining grouting blocking fissures of horizontal long drill holes in a miningfractured zone, and relates to the technical field of stope face safety of coal mines with roof water damage. At present, domestic roof water damage prevention and control technologies mainly comprisegoaf filling, strip mining, thickness-limited mining, drainage, static grouting and the like, and great limitations exist in deep water-rich extra-thick coal seam mining, such as waste of a large number of resources, high cost and unsatisfactory water control effect. According to hydrogeology of a mining area and development characteristics of the height of a mining overlying strata water diversion fractured zone under specific mining conditions, a reasonable target layer is selected, the horizontal long drill holes are formed, slurry meeting the requirements of the technology is selected, and along with mining of a working face, the horizontal long drill holes in the mining fractured zone dynamically block fissures in a pressure maintaining mode to prevent and treat coal seam roof waterdamage.

The invention discloses a type of construction slurry for rotary pile drilling. The slurry is a type of compound slurry comprising water, bentonite, hydroxypropyl methyl cellulose solution, clay and soda ash. The construction slurry provided by the present invention can be widely applied in fields of well drilling, rotary pile drilling, and underground diaphragm wall. During a preparing process, the slurry can be mixed quickly and well. The slurry also has advantages of high efficiency, low pollution, low energy consumption and low cost.

The invention discloses a production method of weather-proof multilayer composite wood floor, comprising the following steps: after normal procedures of drying, balancing and nourishing life, the water content of a wood panel is lowered to 12-16% from originally more than 16%; after sawn into face veneers with thickness being 1-4mm, the water content of the wood panel is lowered to 6-9% by low temperature drying, balancing and nourishing life; then the water content of plywood basal material with water content being 9-14% is lowered to 10-8% by lower temperature drying, balancing and nourishing life; then, plywood basal material which conforms to water content requirement is cut, sanded and glued to assemble with the face veneers, and hot-pressing or cold-pressing procedure is adopted to glue into a floor blank; and finally, the floor blank is nourished, processed with a mortise and decorated by painting on the surface so as to form the weather-proof multilayer composite wood floor. The multilayer composite wood floor produced with the method has small warping degree and deformation ratio when used, has small possibility of cracking, has strong weather-proof performance and can be used as heating wood floor.

The invention discloses a PHP mud manufacturing method and applications of PHP mud, and belongs to the reconstruction technology field of cast-in-situ bored pile manufacturing method and applications thereof. According to the PHP mud manufacturing method, bentonite, sodium carbonate, hydroxymethyl cellulose, and polyacrylamide are taken as main raw materials, barite powder is taken as an additive. The PHP mud manufacturing method comprises following steps: a, material preparation; b, stirring of a base slurry; c, material adjusting; and d, additive adding. The invention also discloses applications of PHP mud, and PHP mud can be applied to construction of cast-in-situ bored piles. Beneficial effects are that: thixotropy is excellent; specific gravity is low, and solid phase content is low; viscosity is high; mud cover is thin; water loss is low; dispersion is not caused; and environmental protection performance is excellent.

The invention provides an underground high-pressure hydraulic fracturing hole sealing material for a coal mine and a hole sealing technology. The hole sealing material comprises the following components by weight: 100 parts of cement, 2 to 4 parts of Ms type early-strength slushing agent, 0.08 to 0.5 parts of polypropylene fiber, and 60 parts of water. The hole sealing technology comprises the following steps in sequence: drilling a hole on a coal-rock mass; constructing until reaching the a top plate at a coal seam; expanding the hole to a bottom plate at the coal seam; feeding a grouting pipe to the bottom plate at the coal seam; arranging a grout returning pipe to the front end of a blocking section of a hole port; blocking the hole port section through AB adhesive and cotton yarn; feeding the hole sealing material into the hole through the grouting pipe; closing a check valve of the grout returning pipe after returning the grout through the grout returning pipe; continuously grouting; completely draining the grout in the grouting pipe once water flows form a fracturing hole; grouting at the second time after the grout is condensed; and finally solidifying. The underground high-pressure hydraulic fracturing hole sealing material for the coal mine has the advantages of being less in contraction, and high in compressive strength and impact toughness; the hole sealing material is high in sealing performance and resistance to high pressure under the effect of high-pressure hydraulic fracturing impact load; simultaneously, the hole sealing material is low in cost and the construction is convenient; and the hole sealing technology is simple, the hole sealing depth meets the requirement, and the success rate is high.

The invention relates to a high temperature ductility well cementing carboxylic styrene butadiene latex additive. The additive consists of 1 portion of a liquid A, 0.067 to 0.133 portion of a liquid B and 0.067 to 0.133 portion of a liquid C. The liquid A comprises 1 portion of carboxylic styrene butadiene latex, 0.03 to 0.3 portion of sulfonate, 0.0 to 0.8 portion of phosphate, carboxylate or a mixture thereof, and 0.1 to 0.8 portion of an acrylamide-acrylic acid-alpha-acrylamide-2-methylpropanesulfonic acid copolymer; the liquid B contains two nonionic surfactants and deionized water; and the liquid C contains two anionic surfactants and the deionized water. When a well bottom temperature reaches between 190 and 240 DEG C, cement slurry is also characterized in low water loss, adjustable thickening time and high compressive strength; and the hardened cement formed by the cement slurry can ensure good well cementing quality with ductility.

The invention belongs to the technical field of picked fresh plant preservation and discloses a preservation method of fresh plants by combination of vacuum pre-cooling and acidic electrolyzed oxidizing water treatment. The preservation method comprises the following steps: (1), screening the fresh plants picked from the field, so that fresh plants which are uniform in size, accordant in ripeness and free of obvious defects are obtained; (2), performing vacuum pre-cooling on the fresh plants selected in the step (1) in a vacuum pre-cooling machine; (3), sprinkling the acidic electrolyzed oxidizing water during the pre-cooling process for 30-150 seconds, turning off the vacuum pump when the final temperature of the pre-cooling is reached, maintaining low-pressure state of the vacuum cavity while sprinkling the acidic electrolyzed oxidizing water again, and stopping sprinkling when the pressure maintaining is over; (4), introducing pre-configured mixed air into the vacuum cavity after the pressure maintaining until the pressure in the vacuum cavity is recovered; and (5), taking the pressure-recovered fresh plants from the pre-cooling machine, carrying out modified atmosphere packaging, and refrigerating the packed fresh plants. The method is suitable to wide varieties of vegetables and simple to operate, and is capable of effectively prolonging shelf lives of the products.

The invention relates to a traditional poultry egg product composite nano-material coating preservation method, belonging to the poultry egg fresh-keep packaging technical field. The method comprises the following steps: 5%-10% polyvinyl alcohol and 0.1%-0.5% nano-SiO2 are dissolved in water and heated; 1% -5% stearic acid is dissolved in (w / v is equal to 1:15-20) ethanol and heated; when the temperature of the polyvinyl alcohol solution and that of the stearic acid solution reach 80-85 DEG C at the same time, the two solutions are mixed, heated and stirred evenly to prepare the composite film coating agent; and the composite coating agent is hot-coated on the surface of the poultry egg and then dried with hot air and filmed. Compared with the cooked egg vacuum-packaging, the poultry egg coating preservation method can significantly reduce the using amount of packaging materials and simplify the packaging sterilization technique of the cooked eggs; besides, the poultry egg coating preservation method can achieve mechanized operation, effectively reduce the damage rate of eggs and significantly improve the economic benefits; moreover, the composite coating material is safe and degradable, which improves the marketability of products after being filmed on the egg surface and can also extend the shelf-life of the cooked egg products.

The invention provides high temperature resistant well cementation cement paste used for a steam injection thermal production well, and the cement paste comprises the following components by weight: 100 parts of high temperature resistant cement, 30-40 parts of a high temperature stabilizer, 0.5-1.2 parts of a thickening time control agent, 2.5-4.5 parts of an oilwell cement fluid loss agent, 0.02-0.15 part of an anti sedimentation agent, 0.02-0.15 part of a defoaming agent, and 45-100 parts of water. The high temperature resistant well cementation cement paste can effectively solve the problems of quick reduction in strength, fast rising in permeability and the like of well cementation cement paste systems in the prior art, can improve the thermal stability, reduces the possibility of channeling and casing damage, can make oilwells long-term sealed, improves production efficiency, and reduces production cost.

The invention relates to a curing agent composition for a pre-fried meat product and the pre-fried meat product produced by using the composition. The curing agent composition consists of salt, granulated sugar, sauce, cooking wine, onion, barbecue powder, spice, a water retaining agent and water, and is further combined with a self-prepared coating mixed by chilli sauce and honey. After refrigeration and reheating by microwave, the curing agent composition of the invention and the microwaveable pre-fried meat product produced by the method still can keep good taste and flavor; the process of the pre-fried breading meat product is simple and convenient, which facilitates market development and produces good economic benefit.

A concentrated slurry and dual-alkali process for desulfurizing, dusting and reclaming fume includes such steps as removing SO2 and dust from fume by the desulfurizing liquid, exhausting clean fume, returning part of resultant liquid base to desulfurizing liquid, pumping its rest in crystallizer, crystallizing, flowing the most of slurry in regenerator while flowing the rest in deposition pool, taking the supernatant from deposition pool and delivering it to regenerator, discharging deposit, and adding lime / lime stone and sodium alkali to said slurry in regenerator for regeneration.