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A blast furnace gas desulfurization method and system

A blast furnace gas and desulfurization system technology, applied in separation methods, chemical instruments and methods, combustible gas purification, etc., can solve the problems of hydrolysis agent poisoning, affecting the desulfurization process and desulfurization effect, etc., to prolong the service life and improve the desulfurization efficiency. Effect

Active Publication Date: 2021-06-29
中琉科技有限公司
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  • Description
  • Claims
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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that the direct hydrolysis of blast furnace gas by the existing blast furnace gas desulfurization process is likely to cause poisoning of the hydrolyzing agent, thereby affecting the desulfurization process and desulfurization effect, thereby providing a blast furnace gas desulfurization method and system

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  • A blast furnace gas desulfurization method and system
  • A blast furnace gas desulfurization method and system

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Embodiment 1

[0053] Such as figure 1 As shown, the present invention provides a blast furnace gas desulfurization system, comprising:

[0054] The deoxidation device has a deoxygenation inlet 7 and a deoxygenation outlet 8,

[0055] The hydrolysis device 3 has a hydrolysis gas inlet 9 and a hydrolysis gas outlet 10, the deoxygenation gas outlet 8 of the deoxygenation device is connected with the hydrolysis gas inlet 9 of the hydrolysis device 3,

[0056] The adsorption device has an adsorption inlet 11 and an adsorption gas outlet 12, and the adsorption inlet 11 of the adsorption device is connected to the hydrolysis gas outlet 10 of the hydrolysis device 3 .

[0057] The deoxygenation device may be a deoxygenation tower, the hydrolysis device 3 may be a hydrolysis tower, and the adsorption device may be an adsorption tower. Through the above arrangement, the blast furnace gas enters from the deoxidation inlet 7 of the deoxidation device, and deoxidizes in the deoxidation device to obtai...

Embodiment 2

[0092] Such as figure 1 As shown, the present embodiment provides a blast furnace gas desulfurization method, comprising the following steps:

[0093] 1) Blast furnace gas at 60°C (the content of COS is 180mg / m 3 , the content of oxygen is 1.2%, the content of carbon monoxide is 28%, the content of hydrogen is 1%) with 500h -1 The volume space velocity is passed into the first deoxidation device 1 (deoxidation tower) for deoxidation (wherein the deoxidation device is filled with a deoxidizer of honeycomb ceramic carrier supporting ruthenium metal, the temperature of the deoxidation zone in the deoxidation device is 60 ° C, and the thickness of the deoxidation zone is 0.6m), to obtain the raw material gas after the deoxidation treatment (the oxygen volume content in the raw material gas after the deoxidation treatment is less than 0.005%);

[0094] 2) The raw material gas after deoxidation treatment was treated for 500h -1 The volume space velocity is passed into the hydroly...

Embodiment 3

[0099] Such as figure 1 As shown, the present embodiment provides a blast furnace gas desulfurization method, comprising the following steps:

[0100] 1) 70°C blast furnace gas (the content of COS is 150mg / m 3 , the content of oxygen is 1.1%, the content of carbon monoxide is 29%, the content of hydrogen is 1.0%) with 600h -1 The volume space velocity is passed into the first deoxidation device 1 (deoxidation tower) for deoxidation (wherein the deoxidation device is filled with granular Ru / CeZrO 4 Deoxidizer, the temperature of the deoxidation zone in the deoxidation device is 70°C, the thickness of the deoxidation zone is 0.5m), and the raw material gas after deoxidation treatment is obtained (the oxygen volume content in the raw material gas after deoxidation treatment is less than 0.006%);

[0101] 2) Treat the raw material gas after deoxidation treatment for 600h -1 The volume space velocity is passed into the hydrolysis unit 3 (hydrolysis tower) for hydrolysis (wherein...

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Abstract

The invention belongs to the field of air purification and environmental protection, and in particular relates to a blast furnace gas desulfurization method and system. The blast furnace gas desulfurization method provided by the present invention comprises the following steps: deoxidizing blast furnace gas to obtain deoxidized raw material gas; hydrolyzing the deoxidized raw material gas under the action of a hydrolyzing agent to obtain hydrolyzed raw material Gas; the raw material gas after hydrolysis treatment is adsorbed by adsorbent to obtain desulfurized blast furnace gas. The blast furnace gas desulfurization method provided by the present invention effectively solves the defect that the existing blast furnace gas desulfurization process directly hydrolyzes the blast furnace gas and easily causes hydrolysis agent poisoning, thereby affecting the desulfurization process and desulfurization effect, and greatly prolongs the service life of the hydrolysis agent.

Description

technical field [0001] The invention belongs to the field of air purification and environmental protection, and in particular relates to a blast furnace gas desulfurization method and system. Background technique [0002] Blast furnace gas contains combustible gases such as carbon monoxide, hydrogen, and methane, among which the volume content of carbon monoxide is about 28%, the volume content of hydrogen is about 1%, and the volume content of methane is about 0.5%. In addition, blast furnace gas also contains about 1% oxygen. In the actual production and application process, the blast furnace gas generally uses the residual pressure turbine power generation device (TRT) to recover the pressure energy and heat energy of the blast furnace gas, and the obtained low-temperature and low-pressure blast furnace gas is usually sent as fuel to the hot blast stove, heating furnace, coke, etc. Furnaces, boilers, gas units for combustion. However, in addition to the above gases in b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00C10K1/20C10K1/32C10K1/00C10K1/26
CPCC10K1/004C10K1/20C10K1/26C10K1/32
Inventor 江莉龙梁诗景郑勇曹彦宁肖益鸿刘时球
Owner 中琉科技有限公司
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