Graphite type hydrogen chloride tail gas absorption tower

Abstract

The invention discloses a graphite type hydrogen chloride tail gas absorption tower, comprising a tank and a shell, wherein the shell is positioned in the tank; the tank consists of three parts, i.e., a cooling absorption section, a rotary absorption section and a circulating absorption section, wherein the cooling absorption section is positioned at the bottom end of the shell; the side wall of the bottom end of the shell is fixedly connected with a first conduit; a barrel is connected with the side walls, far away from the shell, of the first conduit; the inner wall of the barrel is fixedly connected with a graphite absorption block; the bottom of the barrel is fixedly connected with a gas delivery pipe; the end, far away from the barrel, of the gas delivery pipe sequentially passes through the bottom wall of the shell and the inner wall of the tank and extends to the outside of the tank. In order to overcome the defects of the hydrogen chloride tail gas absorption tower in the prior art, the invention provides the graphite type hydrogen chloride tail gas absorption tower; the graphite type hydrogen chloride tail gas absorption tower can be used for carrying out multi-process treatment on the hydrogen chloride gas by means of the cooling absorption section, the rotary absorption section and the circulating absorption section, so that the hydrogen chloride gas is effectively enabled to be fully absorbed.

Description

technical field [0001] The invention relates to the technical field of hydrogen chloride tail gas absorption towers, in particular to a graphite type hydrogen chloride tail gas absorption tower. Background technique [0002] In the process of synthesizing pesticides, dyes, medicines, etc., a large number of chlorine-containing compounds have hydrogen chloride gas as a by-product during the chemical reaction. In order to recover and treat the pollution caused by hydrogen chloride, it is generally absorbed with water or lye. At present, the most commonly used absorption equipment is falling film absorber and packed absorption tower. In order to absorb completely, it often needs to be processed in several stages. [0003] If two-stage falling film absorption is used, the absorption effect is too poor to meet the required requirements, so falling film absorbers are generally used in series with packed tower equipment. However, when the content of hydrogen chloride in the tail ...

AI Technical Summary

Problems solved by technology

However, when the content of hydrogen chloride in the tail gas is high, the heat released by absorption is relatively large. Since the packed tower is an adiabatic absorption process, the heat cannot be removed by adiabatic absorption, which will cause the temperature of the hydrogen chloride gas storage tank to be too high, and the absorption process will deteriorate due to overheating.

When the amount of exhaust gas changes greatly, the packed tower may produce a flooding effect, which makes the absorption incomplete, resulting in poor absorption effect, and the phenomenon that the hydrogen chloride content in the exhaust exhaust gas exceeds the standard.

The single packed tail gas tower absorbs and cannot adapt to the working conditions of fluctuations in the content of hydrogen chloride in the tail gas and fluctuations in the total amount of tail gas

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