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Sulfur trioxide tail gas treating device in sulfonation reaction

A technology of sulfur trioxide and sulfonation reaction, applied in chemical treatment of small raw hide/big raw hide/leather skin/fur, small raw hide/big raw hide/leather/fur treatment, application, etc., can solve the problem of waste of raw materials and achieve Reduce the production of waste acid, ensure the normal start and stop, and improve the yield

Inactive Publication Date: 2011-02-09
ZANYU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Produce AES, K 12 The amount of electrostatic acid produced by products such as LAS and LAS accounts for about 0.1% to 0.2% of the organic material, and the amount of electrostatic acid produced by the production of AOS accounts for about 0.4% to 0.5% of the organic material, causing a huge waste of raw materials

Method used

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  • Sulfur trioxide tail gas treating device in sulfonation reaction
  • Sulfur trioxide tail gas treating device in sulfonation reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 3.8t / h Sulfonated Fatty Alcohol Polyoxyethylene Ether to Prepare SO in AES Production 3 Tail gas treatment: open the organic material (fatty alcohol polyoxyethylene ether) into the tail gas absorption tower valve 2 (the first valve), enter about 8% liquid level into the absorption tower 20, close the valve 2 after feeding, and open the bottom of the absorption tower Valve 5 (the third valve) starts the circulation pump 6, and the tail gas absorption tower circulates itself; adjust the outlet pressure of the circulation pump to 0.4MPa, and the circulation flow rate is 2.5t / h. SO from the gas-liquid separator 10 3 Tail gas reacts and absorbs with the organic material that is sprayed down in countercurrent. After 2 minutes of reaction, open the valve 13 (the second valve) of absorbing material into the sulfonator, and inject it into the sulfonator through the circulation pump to participate in the reaction together with fresh organic material. And adjust the flow rate to ...

Embodiment 2

[0035] 1.6t / h SO in the production of leather fatliquor from sulfonated rapeseed oil 3 Tail gas treatment: open the organic material (vegetable oil) into the tail gas absorption tower valve 2 (the first valve), enter about 6% liquid level into the absorption tower 20, close the valve 2 after feeding, and open the absorption tower bottom valve 5 (the third valve). valve), start the circulation pump 6, and the tail gas absorption tower itself circulates; adjust the outlet pressure of the circulation pump to 0.3MPa, and the circulation flow rate is 1.1t / h. SO from the gas-liquid separator 10 3Tail gas reacts and absorbs with the organic material sprayed down in the countercurrent. After reacting for 5 minutes, open the valve 13 (the second valve) of the absorption material into the sulfonator, and inject it into the sulfonator through the circulation pump 6 to participate in the reaction together with the fresh organic material. , and adjust the flow rate to be 100kg / h, open the...

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Abstract

The invention relates to a sulfur trioxide tail gas treating device in sulfonation reaction, which aims to provide a device with reasonable design and simple operation for treating the tail gas of sulphonated products. The technical scheme is that: the sulfur trioxide tail gas treating device in sulfonation reaction comprises an organic material input tube, wherein both ends of the organic material input tube are connected with a material inlet and a material pump of a sulfonation reactor. The device further comprises a tail gas absorption tower in which an upper packing layer, a spray header, a lower packing layer and a gas material cavity are arranged in sequence from top to bottom. The upper outlet at the top end of the tail gas absorption tower is connected with an electrostatic demister and the lower outlet at the bottom of the tail gas absorption tower is divided into two paths after being connected in series with a third valve and a circulating pump through the pipeline, wherein one path is connected with the spray header while the other is connected with the organic material input tube of the sulfonation reactor after being connected in series with a second valve. A tail gas inlet which is connected with the tail gas outlet of a gas-liquid separator of the sulfonation reactor and a material inlet which is connected with the organic input tube of the sulfonation reactor are arranged on the wall of the gas material cavity.

Description

technical field [0001] The invention relates to a sulfur trioxide tail gas treatment device in sulfonation reaction, which belongs to the technical field of chemical production. Background technique [0002] my country has introduced the first set of SO since the 1980s 3 The production of alkylbenzene sulfonic acid by the gas membrane sulfonation unit replaces the traditional fuming acid sulfonation unit, which is a leap forward technological progress, which greatly increases the yield of the product and greatly reduces the amount of waste acid produced. Then SO 3 Membrane sulfonation technology is developing rapidly. At present, there are more than 100 sets of 1t / h, 1.6t / h, 2.0t / h, 3.0t / h, 3.8t / h and 5t / h devices in operation in China; these The device has achieved localization in terms of equipment manufacturing and control instruments. In the operating device, whether it is the introduction of Chemithon, Italy Ballestra or domestic technology, the tail gas treatment me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78C14C9/02B01D53/50C08G65/00
Inventor 王侃方银军邹欢金胡剑品汪家众
Owner ZANYU TECH GRP CO LTD
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