Method using selective active film for purifying gas and equipment thereof

A gas purification and selective technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of complex structure of purification equipment, narrow scope of application, strict process requirements, etc. The effect of saving solvent

Inactive Publication Date: 2008-11-12
王越
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects in conventional gas purification methods such as complex structure of purification equipment, harsh process requirements, expensive cost and narrow scope of application; to solve the problem of selective membrane layout in existing membrane technology, anti-clogging, anti-pollution and pollution To solve the problem of waste reuse, provide a method for purifying gases with selective active membranes, which is suitable for treating various gas pollution such as flue gas, natural gas, automobile exhaust and oil fume, and for air purification;

Method used

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  • Method using selective active film for purifying gas and equipment thereof
  • Method using selective active film for purifying gas and equipment thereof
  • Method using selective active film for purifying gas and equipment thereof

Examples

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Effect test

Embodiment 1

[0018] Example 1 Flue gas desulfurization, denitrification and dust removal

[0019] First prepare the selective active film forming liquid, select 30 parts by weight of water as solvent, use 10 parts by weight of hydrolyzed rosin as surfactant, and use 20 parts by weight of NH 4 HCO 3 as an absorbent. Mix them evenly and inject them into the selective active membrane generator.

[0020] As shown in Fig. 1, the selective active membrane reactor includes a volume expansion chamber 1, a gas purification absorption chamber 3, and a selective active membrane generator integrated plate 2 arranged between the volume expansion chamber 1 and the gas purification absorption chamber 3. The volume expansion chamber 1 is directly connected to the gas inlet 12 , and the gas purification absorption chamber 3 is between the selective active membrane generator integrated plate 2 and the gas outlet 5 . An observation window 4 is provided on the top of the gas purification absorption chamber...

Embodiment 2

[0034] Embodiment 2 natural gas or water gas dehydrogen sulfide

[0035] Firstly, a selectively active membrane forming solution was prepared, using 50 parts by weight of water as a solvent, 25 parts by weight of polyethylene glycol dimethyl ether as a surfactant, and 40 parts by weight of water as an absorbent. They are uniformly mixed and injected into the selectively active membrane generator.

[0036] As shown in Figure 3, the selective active membrane reactor includes a gas purification absorption chamber and a selective active membrane generator located in the gas purification absorption chamber. The gas purification absorption chamber includes a gas purification absorption chamber I 28 and a gas purification absorption chamber II 25 , and the selective active film generator includes an active film generator I 29 and an active film generator II 26 . The gas purification absorption chamber I 28 is connected to the reactor inlet 15, and a gas source pipeline 17 is arrange...

Embodiment 3

[0042] The control of embodiment 3 automobile tail gas

[0043] The selective active membrane forming liquid used in the present embodiment selects 45 parts by weight of water as a solvent, and the surfactant includes 15 parts by weight of sodium dodecylbenzenesulfonate, 10 parts by weight of rosin potassium soap and 5 parts by weight of fatty acid Magnesium, with 20 parts by weight liquid paraffin, 10 parts by weight NH 4 HCO 3 and 6 parts by weight K 2 CO 3 as an absorbent. Stir with air at room temperature to form a water-in-oil (W / O) selective active membrane forming fluid.

[0044] In this implementation, the selective active membrane reactor and regenerative membrane reactor described in the second embodiment are selected. The specific operation is as follows:

[0045] As shown in Fig. 3, when the exhaust gas of the automobile enters the selective active membrane reactor through the air inlet 15 and promotes the flow rate of the balance gas pump 16. The selective ...

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Abstract

The invention discloses a method and device using selectivity active film to purifying gas. A selectivity active film reactor mainly comprises a selectivity active film generator and a gas purification absorption cavity. The gas to be purified is fed to the inlet of the selectivity active film reactor and passes through the active film generator. The gas to be separated is generated and wrapped by the active film in a bubble mode, the object component is absorbed by the generation liquor of the selectivity active film, and the absorption liquor flows out of a film separator; the purified gas is discharged through a vent. The method of the invention has the advantages of non-block, good separation effect, energy saving, easy operation and so on, and is applicable for treating various gas pollution, such as flue gas, natural gas, car exhaust and oil smoke etc., and air purification.

Description

Background technique [0001] The invention relates to a method for purifying gas, in particular to a method and equipment for purifying gas by using a selective active membrane. technical field [0002] At present, there are many kinds of known gas purification methods and purification equipment, and the purification mechanism involves many aspects such as solid adsorption, liquid absorption, physical separation and chemical conversion. Defects such as narrow range. For example, the well-known coal-fired boiler tail gas treatment adopts dry or wet desulfurization and denitrification technologies. The dry methods mainly include lime method and ammonia method. After lime method desulfurization, a large amount of waste residue is difficult to handle, causing secondary pollution; investment in dry ammonia method desulfurization Big and expensive to run. According to relevant literature published at home and abroad, most of the natural gas desulfurization technologies require re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18
Inventor 王连才王越
Owner 王越
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