A high-efficiency continuous vacuum stripping system for removing dioxane

Abstract

The invention discloses a high-efficiency continuous vacuum stripping system for removing dioxane, which comprises a stripping tower and trays arranged in the stripping tower, a heating module is arranged in the stripping tower, and The top of the stripping tower is provided with a liquid inlet and a gas outlet, the bottom of the stripping tower is provided with a liquid outlet, and the side wall of the stripping tower is provided with a plurality of first mounting grooves matched with the trays, The tray is installed in the first installation groove, and the stripper is provided with a first fixing rod and a second fixing rod for fixing the tray in the first installation groove; A second installation groove is provided on the tower plate, and a top plate is rotatably connected to the inner wall of the second installation groove, and a first through hole is arranged on the top plate, and a hole corresponding to the first through hole is arranged on the tower plate. Corresponding to the second through hole, the diameter of the second through hole is larger than that of the first through hole.

Description

technical field [0001] The invention belongs to the technical field of organic preparation of acyclic or carbocyclic compounds, and in particular relates to a high-efficiency continuous vacuum stripping system for removing dioxane. Background technique [0002] Fatty alcohol ether sulfate is widely used in personal care, dish washing and various industrial applications due to its excellent surface activity and biodegradability, because fatty alcohol ether will produce dioxane as a by-product during the sulfonation process, and dioxane Oxane is another type 2B carcinogen identified by the International Agency for Research on Cancer (IARC). Therefore, both at home and abroad have made clear regulations on the content of dioxane in alcohol ether sulfates. my country's industry standards require fatty alcohol ether sulfates Dioxane content in salt shall not be higher than 70ppm (based on product). [0003] In order to control the content of dioxane in fatty alcohol ether sulfate ...

AI Technical Summary

Problems solved by technology

At present, the content of dioxane in fatty alcohol ether sulfate products on the market is 20-30ppm, but some downstream companies have put forward higher requirements for dioxane indicators in order to further improve product safety, hoping to achieve less than 10ppm. The fatty alcohol ether sulfate obtained by conventional production means can no longer meet the requirements, and there are still low efficiency

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