Reactive static mixer

Abstract

This disclosure relates to a static phosgene mixer, and more generally, to an apparatus for mixing of fluid components such as phosgene and amine during an highly reactive, chemical reaction that is vulnerable to the creation of undesired by-products, and equipment fouling. A guide element ( 5 ) is disposed in the static mixer ( 1 ) to divert the incoming flow of phosgene around the guide element and create an annular mixing passage in the static mixer. This allows for the use of an increased external radius of the effective phosgene flow while maintaining phosgene velocity by creating a blockage of the flow. The same flow, when transformed from a circular configuration to an annular configuration has an increased external radius, and a greater quantity of MDA jets can be placed along the increased radius, thus increasing the overall homogeneity of the mixture. Further, the cross -sectional area of the annular passage section of phosgene defined around the guide element controls the velocity of phosgene which facilitates the mixing of MDA injected through the jets into the phosgene.

Description

technical field [0001] This application relates to static mixers, and more generally to equipment for mixing fluid components such as phosgene and amines during highly reactive chemical reactions that produce undesirable by-products and equipment fouling. Background technique [0002] The field of conventional mixing devices can be broadly divided into two main areas: dynamic or mechanical mixers and static mixers. Dynamic or mechanical mixers rely on some type of moving parts to ensure proper or thorough mixing of the reactants. Static mixers generally have no significant moving parts, instead relying on pressure differentials within the fluids to be mixed to facilitate mixing. The present disclosure relates to static mixers. [0003] The inventors disclosed in this application are also inventors of US patent application Ser. No. 11 / 658,193, which relates to tapered bore multi-tee mixers. In this application, a manifold mixer consists of a tee joint and a straight pipe s...

AI Technical Summary

Problems solved by technology

In prior art configurations, higher amine flow would cause flows from opposing amine injectors to flow into each other

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