Environmental-friendly energy-saving saline sulfate radical concentrating device

Abstract

The invention relates to a sulfate radical filtering device, in particular to an environmental-friendly energy-saving saline sulfate radical concentrating device which comprises an earlier state pretreatment device and a later stage membrane treatment device, wherein the pretreatment device comprises a pre-cooling heat exchanger for initially cooling dechlorinated light saline, a static mixer, a saline cooler for cooling the dechlorinated light saline treated by the static mixer, and a precise filter; the membrane treatment device comprises a membrane solution feed pump and a membrane filter unit; and the outlet of the pre-cooling heat exchanger is connected with the static mixer, the outlet of the static mixer is connected with the saline cooler, the outlet of the saline cooler is connected with the precise filter, the outlet of the precise filter is connected with the membrane solution feed pump, and the outlet of the membrane solution feed pump is connected with the membrane filter unit. According to the environmental-friendly energy-saving saline sulfate radical concentrating device, the pretreatment device and the membrane treatment device are adopted, particularly, the membrane treatment device adopts the membrane filter unit, so that the problem that the saline sulfate radical removal method causes pollution to the environment is solved, and furthermore, energy is saved, consumption is reduced, and an electrolytic bath is protected to operate safely.

Description

technical field [0001] The invention relates to a sulfate radical filter device, in particular to an environment-friendly and energy-saving saltwater sulfate radical concentrator. Background technique [0002] The sulfate radicals in the diaphragm soda production process can be taken away by the finished alkali, so there is no need to consider the removal of sulfate radicals; while in the ionic membrane soda production process, the sulfate radicals cannot enter the caustic soda system through the ion membrane during the electrolysis process, so the sulfate radicals will Accumulated in the brine system, when the accumulated sulfate mass concentration exceeds 7g / L, electrons will be released at the anode during the electrolysis process, power consumption will be consumed, and oxygen will be generated, which will damage the anode, so the sulfate radical must be removed. At present, the conventional method for removing sulfate radicals in brine is to add barium chloride to brine...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the above-mentioned problems existing in the existing method for removing sulfate radicals in brine, and provides an environmentally friendly and energy-saving saltwater sulfate radical concentration device that adopts a selective permeable membrane method to concentrate sulfate radicals and can realize zero pollution to the environment

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