A treatment method and device for sulfur dioxide-containing waste gas

A technology for sulfur dioxide and treatment methods, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve problems such as inappropriate adsorption materials, reduce the number and scale of settings, excellent SO2 physical adsorption performance, good environmental protection benefits and economic effect

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for high concentrations containing SO 2 Flue gas, such as S-Zorb flue gas in petroleum refining industry, is more suitable for SO 2 Physical adsorption and then desorption to recycle sulfur, so the adsorption material with chemical reaction adsorption is not suitable

Method used

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  • A treatment method and device for sulfur dioxide-containing waste gas
  • A treatment method and device for sulfur dioxide-containing waste gas

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Contains SO 2 The gas is catalytic cracking regenerated flue gas, which is pretreated by dust removal, cooling, dehydration and drying before compression, and the SO in the exhaust gas after treatment 2 The volume concentration is 0.05~0.2% (about 285~5700mg / m 3 ), O 2 The volume concentration is 3% to 5%, and the flue gas treatment capacity is 1000Nm 3 / h.

[0031] Preparation of modified MIL-(Al) metal-organic framework materials: using MIL-100(Al) as the matrix, the specific surface area is 1180m 2 / g, the pore volume is 0.64cm 3 / g, the Al content is 15.2%. In the presence of nitrogen, after carbonization at 800°C for 6 hours, soak and stir in 10% hydrochloric acid solution for 12 hours for pickling, filter and dry at 100°C for 8 hours. The above materials were placed in an aqueous solution of ethylenediamine with a volume concentration of 30%, and modified at 600°C for 1 hour in the presence of nitrogen to obtain SO 2 Adsorbent material. After testing, the ...

Embodiment 2

[0035] Contains SO 2 The gas is flue gas regenerated by S-zorb adsorbent, which is pretreated by dust removal, cooling, dehydration and drying before compression, and SO in the exhaust gas after treatment 2 The volume concentration is 2% to 5%, O 2 The volume concentration is less than 0.2%, and the flue gas treatment capacity is 500Nm 3 / h.

[0036] Preparation of modified MIL-(Al) metal-organic framework materials: using MIL-100(Al) as the matrix, the specific surface area is 1180m 2 / g, the pore volume is 0.64cm 3 / g, the Al content is 15.2%. In the presence of nitrogen, after carbonization at 800°C for 6 hours, soak and stir in 10% hydrochloric acid solution for 12 hours for pickling, filter and dry at 100°C for 8 hours. The above materials were placed in an aqueous solution of ethylenediamine with a volume concentration of 30%, and modified at 600°C for 1 hour in the presence of nitrogen to obtain SO 2 Adsorbent material. After testing, the specific surface area of...

Embodiment 3

[0040] Contains SO 2 The gas is catalytic cracking regenerated flue gas, which is pretreated by dust removal, cooling, dehydration and drying before compression, and the SO in the exhaust gas after treatment 2 The volume concentration of O is 0.05% to 0.2%. 2 The volume concentration is 3% to 5%, and the flue gas treatment capacity is 1000Nm 3 / h.

[0041] Preparation of modified MIL-(Al) metal-organic framework materials: using MIL-100(Al) as the matrix, the specific surface area is 1180m 2 / g, the pore volume is 0.64cm 3 / g, the Al content is 15.2%. In the presence of nitrogen, after carbonization at 800°C for 6 hours, soak and stir in 10% hydrochloric acid solution for 12 hours for pickling, filter and dry at 100°C for 8 hours. The above materials were placed in an aqueous solution of ethylenediamine with a volume concentration of 30%, and modified at 600°C for 1 hour in the presence of nitrogen to obtain SO 2 Adsorbent material. After testing, the specific surface a...

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Abstract

The invention relates to a treatment method for waste gas containing sulfur dioxide. The waste gas containing sulfur dioxide is compressed in a compression unit, and then enters an adsorption unit for adsorption. The adsorption material used in the adsorption unit is a modified MIL-(Al) metal-organic framework The material is desorbed after adsorption and penetration, the desorbed gas is compressed and condensed in the liquefaction unit, and the non-condensable gas is mixed with the compressed flue gas before entering the adsorption tower. The invention can realize efficient physical adsorption and liquefaction recovery of sulfur dioxide without frequent operation, and SO 2 The recovery rate is high, the operation stability is good, and the purified gas meets the emission requirements.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas treatment, and in particular relates to a treatment method and device for exhaust gas containing sulfur dioxide. Background technique [0002] Since coal and petroleum typically contain sulfur compounds, SO is formed when burned 2 , resulting in SO in the exhaust gas 2 gas. SO 2 It is a colorless gas with a pungent odor at room temperature and is one of the main pollutants in the atmosphere. As early as in the "Tenth Five-Year Plan", SO 2 It has become one of the main pollutant discharge indicators that the country focuses on controlling emissions. In the air pollution emission standard implemented on July 1, 2017, SO 2 The emission standard is limited to 100mg / m 3 , individual installations or regions, SO 2 The emission standard requires less than 50mg / m 3 . [0003] At present, the widely used desulfurization technology can be divided into wet desulfurization technology and dry des...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/02
CPCB01D53/02B01D2253/204B01D2257/302B01D2258/0283B01D2259/4009
Inventor 刘志禹赵磊方向晨刘忠生汪鹏齐慧敏
Owner CHINA PETROLEUM & CHEM CORP
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