A kind of method utilizing meta-position oil to prepare m-chloroaniline

[0029] A method utilizing meta-position oil to prepare m-chloroaniline, comprising the following steps:

[0030] (1) Batching reaction: add the meta-position oil into the methoxylation reaction kettle, measure methanol from the methanol metering tank in a closed state, and then put in the catalyst ammonium chloride, stir at a speed of 60r / min, and heat the reaction kettle at the same time Temperature to 58-63°C, adjust the pressure of the reactor to 0-0.2MPa, and finally add sodium hydroxide to the reactor, keep the temperature constant, take a sample for detection after 5 hours of reaction; among them, meta oil: methanol: sodium hydroxide : The mass ratio of ammonium chloride = 1: 0.30: 0.32: 0.045, when the content of p-nitrochlorobenzene ≤ 0.1% and the content of o-nitrochlorobenzene ≤ 2%, the methanol is recovered and then transferred to the next washing process ;

[0031] (2) Washing: The material obtained by the reaction in step (1) is transported to the workshop storag...