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SO2-containing gas treatment method and device

A treatment method and gas technology, which is applied in the field of treatment of SO2-containing gas, and can solve problems such as inapplicability of adsorption materials

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for high concentration containing SO 2 Flue gas, such as SO in S-Zorb flue gas in petroleum refining industry 2 Concentration>0.5%, more suitable for SO 2 Physical adsorption followed by desorption to achieve SO 2 recycling, so adsorption materials with chemically reactive adsorption are not suitable

Method used

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  • SO2-containing gas treatment method and device

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Embodiment 1

[0027] 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.

[0028] Preparation of modified zinc-based metal-organic framework materials: using MOF-5 as the matrix, the specific surface area is 1655m 2 / g, the pore volume is 1.13cm 3 / g, Zn content 31.2%. The MOFs-5 were doped with 1.0% histidine by mass, and treated at 1000 °C for 6 hours in the presence of nitrogen to obtain modified Zn-based metal-organic framework materials.

[0029] will contain SO 2 The flue gas is compressed, the gauge pressure is controlled at 0.2-0.3MPaG, and then enters the adsorption unit for adsorption. The adsorption unit is filled with the above-mentioned modified zinc-based metal-...

Embodiment 2

[0032] 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.

[0033] Preparation of modified zinc-based metal-organic framework materials: using MOF-5 as the matrix, the specific surface area is 1655m 2 / g, the pore volume is 1.13cm 3 / g, Zn content 31.2%. The MOFs-5 were doped with 1.0% histidine by mass, and treated at 1000 °C for 6 hours in the presence of nitrogen to obtain modified Zn-based metal-organic framework materials.

[0034] will contain SO 2 The flue gas is compressed, the gauge pressure is controlled at 0.4-0.5MPaG, and then enters the adsorption unit for adsorption. The adsorption unit is filled with the above-mentioned modified zinc-based metal-organic framework material, a...

Embodiment 3

[0037] 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.

[0038] Preparation of modified zinc-based metal-organic framework materials: using MOF-5 as the matrix, the specific surface area is 1655m 2 / g, the pore volume is 1.13cm 3 / g, Zn content 31.2%. The MOFs-5 were doped with 1.0% histidine by mass, and treated at 1000 °C for 6 hours in the presence of nitrogen to obtain modified Zn-based metal-organic framework materials.

[0039] will contain SO 2 The flue gas is compressed, the gauge pressure is controlled at 0.2-0.3MPaG, and then enters the adsorption unit for adsorption. The adsorption unit is filled with the above-mentioned modified zinc-based metal-organic framework mater...

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Abstract

The invention relates to a SO2-containing gas treatment method and device; the SO2-containing gas is compressed in a compression unit and then enters an adsorption unit to be adsorbed, an adsorption material adopted by the adsorption unit is a modified zinc-based metal organic framework material, and desorption regeneration is carried out after adsorption penetration. According to the invention, efficient physical adsorption of SO2 can be realized, frequent operation is not needed, the SO2 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, in particular to a 2 Gas processing method and device. 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 , with 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 desulfurization technology. The existing de...

Claims

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Application Information

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IPC IPC(8): B01D53/02
CPCB01D53/02B01D2253/204B01D2257/302B01D2258/0283B01D2259/4009
Inventor 赵磊刘忠生方向晨王新齐慧敏刘志禹汪鹏
Owner CHINA PETROLEUM & CHEM CORP
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