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Chlorinated paraffin tail gas treatment technology and absorption equipment

A technology for chlorinated paraffin and tail gas treatment, which is applied in gas treatment, petrochemical modification, chemical instruments and methods, etc., and can solve problems such as non-compliance with emission standards

Pending Publication Date: 2019-12-03
DANYANG CITY AUX CHEM PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, after being treated by the chlorinated paraffin tail gas treatment process, the exhaust gas still contains a small amount of chlorine and hydrogen chloride gas, which does not meet the relevant emission standards, so the exhaust gas needs to be further absorbed and treated

Method used

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  • Chlorinated paraffin tail gas treatment technology and absorption equipment
  • Chlorinated paraffin tail gas treatment technology and absorption equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of chlorinated paraffin tail gas treatment absorption equipment, such as figure 2 As shown, it includes a degassing kettle, a degassing buffer tower, a first-level falling film absorption tower, a second-level falling-film absorption tower, a first-level porcelain ring packing tower, a second-level porcelain ring packing tower and an alkali absorption tower; the degassing The still is connected to the chlorinated paraffin receiving tank, which is used to remove the unreacted residual chlorine and hydrogen chloride in the chlorinated paraffin; It is used for spraying and absorbing the exhaust gas; the gas phases of the first-stage falling film absorption tower, the second-stage falling-film absorption tower, the first-stage ceramic ring packing tower and the second-stage ceramic ring packing tower are connected in sequence for the staged absorption of tail gas; The lye absorption tower is located at the end and is used to absorb and discharge the tail gas, and it...

Embodiment 2

[0029] Such as figure 1 As shown, the steps of using the chlorinated paraffin tail gas treatment and absorption equipment described in Example 1 to carry out tail gas treatment are as follows:

[0030] 1) Degassing still degassing: the chlorinated paraffin obtained by the chlorination reaction is sent to the degassing kettle through the chlorinated paraffin receiving tank, and under the centrifugal action of the spinning plate in the degassing kettle, the liquid chlorinated paraffin is on the inner wall of the degassing kettle A descending liquid film is formed, and the unreacted residual chlorine and hydrogen chloride gas are separated from the chlorinated paraffin to obtain Class I tail gas to be treated. The spinner in the degassing kettle is made of high temperature, acid and alkali resistant low-carbon nickel-chromium-molybdenum-niobium alloy, and the spinning speed of the spinner is 150 rpm. The degassing kettle is a heat exchange steam kettle with a jacket, the steam p...

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Abstract

The invention discloses a chlorinated paraffin tail gas treatment technology and absorption equipment. The treatment technology comprises steps as follows: throwing separation in a degassing kettle, elution in a tempering tower, falling film absorption, ceramic ring absorption and alkali absorption emission, wherein two falling film absorption towers and two ceramic ring absorption towers are added on the basis of the degassing kettle and the degassing tempering tower, tail gas produced in a chlorinated paraffin production process is subjected to further advanced treatment, and residual chlorine and hydrogen chloride gas in the tail gas are completely absorbed. The absorption equipment comprises the degassing kettle, the degassing tempering tower, the falling film absorption towers, the ceramic ring packed tower and an alkali liquor absorption tower corresponding to the treatment technology, and the gas emitted by the chlorinated paraffin production technology is ensured to meet the related environmental protection standard.

Description

technical field [0001] The invention relates to a chlorinated paraffin tail gas treatment process and absorption equipment. Background technique [0002] Chlorinated paraffin is a chlorinated derivative of paraffin. It has the advantages of low volatility, flame retardancy, good electrical insulation, and low price. It can be used as a flame retardant and an auxiliary plasticizer for polyvinyl chloride. At present, the chlorination methods in the chlorinated paraffin production process mainly include thermal chlorination, catalytic chlorination and photocatalytic chlorination. The tail gas produced by the chlorination process is residual chlorine and hydrogen chloride gas. Chlorine gas is a toxic gas that can be It invades the human body through the respiratory tract and dissolves in the water contained in the mucous membranes, forming hypochlorous acid and hydrochloric acid, which damage the upper respiratory tract mucous membranes; and chlorine gas is a serious hazard to t...

Claims

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Application Information

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IPC IPC(8): B01D53/18B01D53/14
CPCB01D53/18B01D53/1406B01D53/1412B01D53/1456B01D2257/2025B01D2257/2045B01D2258/02C10G73/38
Inventor 冯侃贡红亮徐慧民
Owner DANYANG CITY AUX CHEM PLANT
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