A kind of method of still residue treatment of 2-octyl-3 (2h)-isothiazolone

Abstract

The invention relates to the technical field of hazardous waste pretreatment and particularly relates to a treatment method of reactor residues of 2-octyl-3(2H)-isothiazolone. The method comprises (1) distilling to obtain a solvent of which the mass is 45 to 50% the total mass of the mother liquor, and (2) adding a liquid alkaline of which the mass is 50 to 60% that of the mother liquor into the reactor residues drop by drop through a liquid alkaline dropwise addition pot in 4 to 5h, heating the materials to 60 to 70 DEG C, and stirring the mixture for 10 to 15h, wherein in stirring, low temperature water at a temperature of 8 to 10 DEG C is fed into a jacket of the treatment reactor so that the mixture is cooled to 25 to 27 DEG C. The method is simple in operation, does not need to be manually operated by tools such as a feeding pump, utilizes pipelines prepared in the workshop and is operated closedly.

Description

technical field

[0001] The invention relates to a method for treating the residue of a fungicide product, and belongs to the technical field of hazardous waste disposal pretreatment. Background technique

[0002] When the fungicide is used to treat the residue of the kettle, the original process is to add monoethanolamine to the residue of the kettle, heat it to 30-50°C under stirring, react at 30-50°C for 3-6 hours, and then add an appropriate amount of waste methanol to carry out deal with.

[0003] The use of monoethanolamine to treat the residue in the kettle has the following disadvantages: (1) the melting point of monoethanolamine is 10.3°C, and it is inconvenient to store and use in winter; (2) the cost of monoethanolamine is relatively high; Putting it into the storage tank of the workshop or directly into the still residue treatment kettle increases potential safety hazards and increases the degree of physical harm to operators. Contents of the invention [0004...