Diethyltoluenediamine solution filtering device

Abstract

The invention discloses a diethyl toluenediamine solution filtering device, and relates to the technical field of chemical equipment, the diethyl toluenediamine solution filtering device comprises a box body, a driving motor, a stirring shaft and a stirring rod, the upper surface of the box body is fixedly communicated with a liquid inlet pipe, and the driving motor is installed on the upper surface of the box body. The device is reasonable in design structure, each L-shaped rod can be driven to move up and down in a reciprocating mode through reciprocating operation of an electric push rod, then a filtering cylinder is driven to move up and down in a reciprocating mode through each connecting plate, and a solution and hydrochloric acid in the filtering cylinder are more fully mixed through stirring of a stirring rod; when the filtering cylinder reciprocates up and down, a solution in the box body and the filtering cylinder can be mixed with hydrochloric acid, and when the filtering cylinder descends, the bottom surface of the filtering cylinder is in contact with the inner bottom wall of the box body, so that the solution at the bottom in the box body flows into the filtering cylinder through a first water inlet hole; therefore, the solution in the box body can be comprehensively mixed.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a filtration device for diethyltoluenediamine solution. Background technique [0002] The use of diethyltoluenediamine in polyurethane can improve the strength and hydrolysis resistance of the product, greatly improve the product productivity, and make it possible to industrialize large-sized and complex polyurethane products. In addition, it can also be used as epoxy, alkyd resin curing agent, rubber oil antioxidant, dye, pesticide intermediate, is a promising new chemical product. At present, an excessive amount of aromatic amine catalyst is added to the prepared diethyltoluenediamine stock solution, and these catalyst residues and a little aromatic amine derivatives affect the purity of the diethyltoluenediamine stock solution. Add a certain amount of hydrochloric acid to the toluenediamine stock solution tank to mix, so that this part of the residual catalyst is c...

AI Technical Summary

Problems solved by technology

[0003] Because diethyltoluenediamine solution and quantitative hydrochloric acid exist for a long time to mix, and after the mixing is completed, the solution needs to be allowed to stand still before the residual catalyst can be converted into precipitates, which makes the process time longer and increases the solution processing time. The time cost of production also reduces the production efficiency of the solution, thus greatly reducing the practicability of the solution filtration device

Images