Jet flow flash condensation pot for continuous preparation of hydrogenated nitrile rubber

Abstract

The invention relates to a jet flow flash condensation pot for continuous preparation of hydrogenated nitrile rubber. The jet flow flash condensation pot mainly comprises a cylinder body with a jacket, a motor-driven stirring device and a Venturi jet flow device, wherein an upper head of the cylinder body with the jacket is connected with the motor-driven stirring device; a lower head of the cylinder body is connected with the Venturi jet flow device; a cooling water inlet pipe and a cooling water outlet pipe are fixed to the lower head through a cooling water inlet pipe platform and a cooling water outlet platform of the Venturi jet flow device; a Venturi jet flow device cylinder body, as well as a ring pipe and a cooling water ring pipe which are welded with the Venturi jet flow device cylinder body, is fixed on the lower head by the cooling water inlet pipe and the cooling water outlet pipe; a steam nozzle and a hot water nozzle are mounted on a base; a steam pipe is horizontally and directly inserted into the outer side pipe of the base to be perpendicular to the plane of both the cooling water inlet pipe and the cooling water outlet pipe. The jet flow flash condensation pot can improve the solvent vaporization rate and the steam effective utilization ratio, realizes the continuous condensation process, and is simple and convenient to operate, short in condensation time and favorable for large-scale rubber condensation production.

Description

technical field [0001] The invention belongs to the coagulation process field of hydrogenated nitrile butadiene rubber (HNBR), and is aimed at a kind of cohesion rubber colloid in the process of preparing HNBR by hydrogenation of a homogeneous catalyst, and a high-efficiency production equipment for recovering solvent; it relates to a continuous HNBR jet flash coagulation kettle . Background technique [0002] Hydrogenated Nitrile Rubber (HNBR) is a nitrile elastomer with a high degree of saturation, which selectively hydrogenates the butadiene units on the nitrile rubber (NBR) segment, and unsaturated Hydrogenation of double bonds produces saturated C-C single bonds. Hydrogenated nitrile rubber not only maintains the good oil resistance, wear resistance and low temperature resistance of NBR, but also has good high temperature resistance, oxidation resistance, ozone and chemical resistance, and has a high level of mechanical properties and resistance to compression set Per...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a continuous preparation of HNBR jet flash coagulation kettle. Through the joint action of steam and circulating hot water jet, the glue is cut into pieces and dispersed into ideal glue droplets, which solves the problem of colloidal particles in the traditional coagulation kettle. Different sizes, easy to block the situation of the pipeline

Compared with the traditional coagulation kettle, the addition of hot water jets makes it work with steam to greatly reduce the amount of steam used, which solves the problem of high steam consumption in traditional processes

The rubber glue that needs to be condensed is sprayed from the ring pipe of the Venturi ejector, so that it can better exchange energy with hot water, so that the solvent can be better vaporized, and solve the problem of the solvent content in the rubber particles after the traditional process is condensed. high problem

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