Diethyltoluenediamine hydrolysis solvent distillation and recovery device

Abstract

The invention discloses a diethyltoluenediamine hydrolysis solvent distillation and recovery device which comprises a heating box, a heating mechanism is arranged in the wall body of the heating box, a distillation barrel is placed in the heating box, a clamping mechanism is arranged between the distillation barrel and the heating box, an upper closing cover is placed at the upper end of the heating box, a locking mechanism is arranged between the upper closing cover and the heating box, a motor box is fixedly connected to the top end of the inner wall of the upper closing cover, a motor is arranged in the motor box, a stirring mechanism used in cooperation with the distillation barrel is arranged at the output end of the motor, a steam pipe is arranged on the wall body of the top end of the upper closing cover, and a condensation mechanism is arranged on the steam pipe. According to the present invention, the heating mechanism is adopted, the heating cavity is formed in the heating box, and the oil bath heating manner is adopted, such that the heating temperature can be stably increased so as to uniformly heat the solvent in the distillation barrel, and the risk of distillation equipment explosion caused by non-uniform heating is avoided.

Description

technical field [0001] The invention relates to the technical field of solvent distillation recovery, in particular to a diethyltoluenediamine hydrolysis solvent distillation recovery device. Background technique [0002] Diethyltoluenediamine refers to a mixture of two isomers of diethyltoluenediamine, referred to as DETDA. It is light yellow to reddish brown transparent liquid with ammonia smell at room temperature, slightly soluble in water, soluble in alcohol, ether, ketone and other polar organic solvents, and has good compatibility with polyether and polyester polyols. Long-term exposure to the air will darken the color. Diethyltoluenediamine is flammable and highly corrosive. Skin and eye contact can cause irritation and severe burns. It is harmful if swallowed. There is a lack of specific toxicity data. Its toxicity can refer to toluenediamine . The main application is curing agent, antioxidant, chain extender, lubricant, polyurethane raw material, amine catalyst, ...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the solvent is heated unevenly by using a single heat source to heat the solvent when the distillation equipment used in the diethyltoluenediamine hydrolysis solvent distillation recovery device in the prior art is working, so that the distillation The temperature of the solvent in the equipment is inconsistent, which is prone to the safety hazard of the distillation equipment bursting due to uneven heating, and in the production process of diethyltoluenediamine, the catalyst used can be dissolved in diethyltoluenediamine Forming a mixed phase state, the catalyst will be converted into a solid substance during the distillation process, which will easily cause the problem that the liquid part after the hydrolysis will be evaporated to dryness if the distillation time is too long, and the solid will remain at the bottom of the distillation tank and cannot be extracted. A diethyltoluenediamine hydrolysis solvent distillation recovery device

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