Ionic liquid catalyst treating system

Abstract

A process removing ionic liquid from a process stream is described. The process stream is introduced into a coalescer to form an ionic liquid stream and a first treated process stream which has less ionic liquid than the process stream. The first treated process stream is introduced into a separator to form a second treated process stream. The second treated process stream has less ionic liquid than the first treated process stream. The separator is selected from a filtration zone comprising sand or carbon, an adsorption zone, a scrubbing zone, an electrostatic separation zone, or combinationsthereof.

Description

[0001] priority statement [0002] This application claims priority to US Application No. 62 / 268,865, filed December 17, 2015, the contents of which are incorporated herein by reference in their entirety. Background technique [0003] Various hydrocarbon conversion processes can use ionic liquid catalysts. Alkylation is commonly used to combine light olefins (such as mixtures of olefins such as propylene and butenes) with isobutane to produce relatively high-octane branched-chain paraffinic fuels, including isoheptane and isooctane. Similarly, alkylation reactions can be carried out using aromatic compounds such as benzene instead of isobutane. When benzene is used, the product obtained from the alkylation reaction is an alkylbenzene (eg, ethylbenzene, cumene, dodecylbenzene, etc.). [0004] Used in the oligomerization of light olefins (such as ethylene, propylene and butene) to produce higher carbon number olefin products (such as C 6+ alkenes) are well known. Oligomeriza...

AI Technical Summary

Problems solved by technology

[0013] However, it has been found that in some embodiments these ionic liquid levels are still too high

For example, it has been found that ionic liquid levels of 10 to 40 ppm may still be toxic to microorganisms in wastewater treatment facilities

Images