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A hydrogen chloride, sulfur dioxide mixed tail gas separation device

A sulfur dioxide and separation device technology, applied in the direction of chlorine/hydrogen chloride, chlorine/hydrogen chloride purification, separation methods, etc., to achieve the effects of increasing residence time, protecting the environment, and increasing the contact area

Active Publication Date: 2021-11-09
江苏春江润田农化有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a hydrogen chloride, sulfur dioxide mixed tail gas separation device to solve the problems raised in the prior art

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  • A hydrogen chloride, sulfur dioxide mixed tail gas separation device
  • A hydrogen chloride, sulfur dioxide mixed tail gas separation device
  • A hydrogen chloride, sulfur dioxide mixed tail gas separation device

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Embodiment

[0034] Example: such as Figure 1-6 As shown, the present invention provides the following technical solutions, a hydrogen chloride, sulfur dioxide mixed tail gas separation device, the mixed tail gas separation device includes a separation absorption tower 1, a primary packing absorption tower 2 and a secondary packing absorption tower 3, the separation absorption tower One side of 1 is provided with a primary packing absorption tower 2, and one side of the primary packing absorption tower 2 is provided with a secondary packing absorption tower 3, and the separation absorption tower 1 and primary packing absorption tower 2 are used to treat the The hydrogen chloride gas is removed, and the secondary packing absorption 3 is used to remove the sulfur dioxide gas in the mixed tail gas. The bottom end of the separation absorption tower 1 is connected with the bottom end of the primary packing absorption tower 2 through a pipeline, and the primary packing The top of the absorption...

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Abstract

The invention discloses a hydrogen chloride and sulfur dioxide mixed tail gas separation device, which relates to the technical field of waste gas treatment. The mixed tail gas separation device includes a separation and absorption tower, a primary packing absorption tower and a secondary packing absorption tower, and one side of the separation and absorption tower is arranged There is a primary packing absorption tower, one side of the primary packing absorption tower is provided with a secondary packing absorption tower, a sodium sulfite filter tank is also provided below the secondary packing absorption tower, and a vacuum filter tank is provided on one side of the secondary packing absorption tower. Adsorption tank, the invention is scientific and reasonable, safe and convenient to use, the invention utilizes the different solubility of hydrogen chloride gas and sulfur dioxide gas at different temperatures, and controls the temperature of water and liquid caustic soda through the temperature control tube, so that about 30% hydrochloric acid can be obtained As a by-product, at this time, at a temperature of 50°C-65°C, the solubility of sulfur dioxide in 30% hydrochloric acid is only 0.2%, and the mutual separation of hydrogen chloride gas and sulfur dioxide gas is well realized.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a hydrogen chloride and sulfur dioxide mixed tail gas separation device. Background technique [0002] Hydrogen chloride and sulfur dioxide produced by acyl chlorination are acidic gases, and direct discharge will cause serious pollution to the atmosphere. Therefore, after acyl chlorination, the tail gas produced needs to be treated to reduce pollution to the atmosphere. In the prior art, liquid caustic soda is used Absorb the generated hydrogen chloride and sulfur dioxide gas to generate sodium chloride and sodium sulfite. However, the separation effect of the generated sodium chloride and sodium sulfite is poor, so it can only be treated as waste salt, which is a waste of resources. How to realize hydrogen chloride and sulfur dioxide gas The processing and separation of hydrogen chloride has become a technical problem that needs to be solved urgently. Therefore, peo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/18B01D53/78B01D53/50B01D53/04C01B7/07C01D5/14
CPCB01D53/04B01D53/1456B01D53/1481B01D53/18B01D53/50B01D53/78C01B7/0706C01D5/14
Inventor 曹卫东魏康钱晖
Owner 江苏春江润田农化有限公司
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