Jet nozzle for condensing and devolatilizing synthetic rubber

Abstract

The invention discloses a jet nozzle for condensing and devolatilizing synthetic rubber, comprising a nozzle main body, wherein a straight throat pipe is formed in the nozzle main body, and an diffusion spray head is formed on the end of the straight throat pipe, pointing to a glue liquid jetting direction; at least one water inlet pipe communicated with the straight throat pipe is arranged on the side face of the nozzle main body; and the jet nozzle also comprises a glue liquid inlet joint inserted in the straight throat pipe. Glue liquid is sheared, dispersed, condensed and devolatilized inthe jet nozzle before entering a condensation pot, i.e., the aftertreatment process of the synthetic rubber, performed in the condensation pot in the industry, is finished in advance in the jet nozzle. Under the strong shearing action of high-speed flow, the granularity of grains of the synthetic rubber is greatly reduced, therefore, the condensing effect of the rubber grains is improved, and thevolatilizing yield of a solvent is increased. The jet nozzle has a simple structure and low equipment manufacturing cost and can continuously run, thereby having the advantages of small equipment investment and low running cost.

Description

technical field [0001] The invention relates to the technical field of chemical separation, in particular to a jet nozzle for coagulation and devolatilization of synthetic rubber by convective jetting of high-speed water flow. Background technique [0002] In the industrial synthesis process of rubber, the polymer solution or suspension undergoes a series of physical treatments to obtain all the finished products, collectively referred to as the post-treatment process of synthetic rubber. The post-treatment of synthetic rubber usually includes the removal of monomers, catalysts and solvents (volatile components), dehydration and drying of polymers, and recycling of various raw materials. Among them, since solvent is an important and widely used auxiliary material in the production of synthetic rubber by solution polymerization, the removal process of solvent is one of the main processes directly related to the production cost of synthetic rubber, and its recovery efficiency ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, the synthetic rubber liquid can only be condensed and devolatilized in the reaction kettle, and the uneven dispersion will affect the devolatilization effect, resulting in poor coagulation effect of colloidal particles and solvent recovery. The defect that the efficiency is not high enough to provide a jet nozzle for the coagulation and devolatilization of synthetic rubber

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