Hydrogen chloride tail gas recovery equipment

A tail gas recovery and hydrogen chloride technology, which is applied in the direction of chlorine/hydrogen chloride, chemical instruments and methods, and separation of dispersed particles, can solve problems such as adverse environmental effects, and achieve high automation, novel ideas, and good effects

Inactive Publication Date: 2011-09-28
JIANGSU HONGYUAN TECHNOLOGY ENGINEERING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of hydrochloric acid recovery tower has a simple structure, can remove most of the hydrogen chloride gas in the tail gas, and has low op

Method used

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  • Hydrogen chloride tail gas recovery equipment
  • Hydrogen chloride tail gas recovery equipment
  • Hydrogen chloride tail gas recovery equipment

Examples

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Embodiment Construction

[0020] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0021] figure 1 It is the first embodiment of the hydrogen chloride tail gas recovery device of the present invention. It has a hydrochloric acid recovery tower 1 and an absorption liquid circulation device 11. The bottom of the hydrochloric acid recovery tower 1 is provided with a tail gas inlet, and the tail gas inlet of the hydrochloric acid recovery tower 1 is provided with a gas Distributor 17, the upper end of hydrochloric acid recovery tower 1 is provided with tail gas outlet, the tail gas outlet of hydrochloric acid recovery tower 1 is provided with mist eliminator 18, is provided with the secondary spraying device of spraying absorption liquid in hydr...

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Abstract

The invention relates to hydrogen chloride tail gas recovery equipment, which is provided with at least one hydrochloric acid recovery tower and an absorption liquid circulating device, wherein a tail gas inlet is formed on the lower part of each hydrochloric acid recovery tower, and a tail gas outlet is formed at the upper end of each hydrochloric acid recovery tower; a secondary spraying devicefor spraying absorption liquid is arranged in each hydrochloric acid recovery tower and comprises two sprayers which are arranged up and down; a filler layer is arranged below each sprayer; a circulating liquid tank for recovering the absorption liquid sprayed from the secondary spraying devices is arranged on the lower part of each hydrochloric acid recovery tower; and the circulating liquid tanks and the secondary spraying devices are in pipeline communication through the absorption liquid circulating device. The hydrogen chloride tail gas recovery equipment has a novel concept, the hydrochloric acid recovery towers are provided with the secondary spraying devices, so the effect of absorbing hydrogen chloride in recovered tail gas is better, and hydrochloric acid products with utilization value can be obtained; and the hydrogen chloride tail gas recovery equipment is electrically controlled and has a high automation degree, and the running cost is far lower than that of a hydrogen chloride tail gas treatment tower.

Description

technical field [0001] The invention relates to the technical field of tail gas recovery and treatment equipment, in particular to a hydrogen chloride tail gas recovery equipment, which is used to absorb hydrogen chloride gas in the tail gas discharged during the polysilicon production process, and directly convert the tail gas containing hydrogen chloride into a valuable by-product hydrochloric acid equipment. Background technique [0002] A large amount of tail gas is produced during the polysilicon production process, and the tail gas contains a large amount of hydrogen chloride. The traditional tail gas treatment method is to neutralize the tail gas with an alkaline solution. This process will inevitably produce a huge amount of salty wastewater that needs further treatment, otherwise it will cause Serious environmental pollution problem. Moreover, the traditional tail gas treatment method also consumes a high cost of chemicals. How to separate or transform the hydroge...

Claims

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Application Information

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IPC IPC(8): B01D53/18C01B7/01
Inventor 蒋超
Owner JIANGSU HONGYUAN TECHNOLOGY ENGINEERING CO LTD
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