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Method and device for treating SO2-containing waste gas

A treatment method and exhaust gas technology, applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of activated carbon adsorption materials loss, adsorption capacity needs to be improved, etc., to achieve efficient recovery and reuse, and improve the effect of adsorption capacity

Pending Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorption capacity of the adsorbent needs to be improved
[0007] In addition, the adsorbent materials used in the traditional desulfurization process have oxidative properties and are easy to remove SO 2 Oxidation to SO 3 , the activated carbon adsorption material itself has loss in the regeneration process

Method used

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  • Method and device for treating SO2-containing waste gas
  • Method and device for treating SO2-containing waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of the adsorption material is as follows: MOF-5 is used as the matrix, and the specific surface area is 1655 m 2 / g, the pore volume is 1.13 cm 3 / g. In the presence of nitrogen, the carbonization time was 6 hours at 1000° C. to obtain a carbonized material. The carbonized material was placed in a sodium sulfite solution, impregnated with an equal volume, and dried under nitrogen at 120°C to obtain SO 2 Adsorption material, sodium sulfite loading ratio is 5%. After testing, the specific surface area of ​​the prepared material is 2426 m 2 / g, the pore volume is 3.27 cm 3 / g.

[0028] According to attached figure 1 The processing flow, first will contain SO 2 The flue gas is compressed and condensed, the gauge pressure is controlled at 0.5MPaG, and the temperature is 5°C. The compression condensation enters the adsorption unit after passing through the buffer tank, and the adsorption unit is filled with the above-mentioned carbonized metal or...

Embodiment 2

[0031] Implementation method is the same as embodiment 1, and difference is the SO that adopts 2 The loading of sodium sulfite in the adsorbent material was 1%. After one month of operation, the adsorption capacity of the adsorbent can be stabilized at more than 85% of the initial adsorption capacity, and SO can be recovered under the same number of cycles 2 About 0.92 tons.

Embodiment 3

[0033] Implementation method is the same as embodiment 1, and difference is the SO that adopts 2 The loading of sodium sulfite in the adsorbent material was 7%. After one month of operation, the adsorption capacity of the adsorbent can be stabilized at more than 85% of the initial adsorption capacity, and SO can be recovered under the same number of cycles 2 About 1.12 tons.

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Abstract

The invention relates to a method and a device for treating SO2-containing waste gas, the SO2-containing waste gas is compressed and condensed in a compression unit and then enters an adsorption unit for adsorption, an adsorption material adopted by the adsorption unit is that sodium sulfite is loaded on a carbonized metal organic framework material, and the adsorption unit enters a desorption unit for regeneration after adsorption penetration. According to the invention, effective treatment of SO2-containing waste gas is realized, and SO2 can be efficiently recycled.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas treatment, in particular to a 2 Waste gas treatment method and device. Background technique [0002] Fossil fuels (coal, petroleum, etc.) contain a large amount of sulfur, and direct combustion will produce high levels of SO 2 smoke. SO 2 Excessive discharge of carbon dioxide has caused a series of environmental problems, and the acid rain and photochemical smog formed have brought serious harm to human production and life. Currently, the widely used SO 2 The removal methods are divided into wet desulfurization technology and dry desulfurization technology. Wet desulfurization is mainly to contact the lye with the flue gas, and the SO 2 It is converted into sulfite and sulfate and dissolved in water, and then the solution containing sulfate is treated to achieve the purpose of desulfurization. Dry desulfurization mainly uses the adsorption properties of porous materials to remove SO 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01D53/26
CPCB01D53/02B01D53/265B01D2253/25B01D2257/302B01D2258/0283B01D2259/40083
Inventor 刘忠生汪鹏赵磊刘志禹
Owner CHINA PETROLEUM & CHEM CORP
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