Device and method for removing organic sulfur and inorganic sulfur in coal gas by wet process

An organic sulfur and inorganic sulfur technology, applied in gas dust removal, combustible gas purification, removal of gas pollutants, etc., can solve the problems of high desulfurization cost, difficult waste liquid treatment, large gas pressure loss, etc., and achieve the technical process route. The effect of short, low desulfurization cost and small number of equipment

Pending Publication Date: 2022-05-10
NINGBO ZHANGFU ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the survey, the dry desulfurization process has problems such as large gas pressure loss, high energy consumption, high desulfurization cost, and difficulty in solid waste treatment, and the semi-dry desulfurization process has problems such as short service life of solid hydrolysis catalysts, high desulfurization costs, and difficult disposal of waste liquid And other issues

Method used

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  • Device and method for removing organic sulfur and inorganic sulfur in coal gas by wet process
  • Device and method for removing organic sulfur and inorganic sulfur in coal gas by wet process
  • Device and method for removing organic sulfur and inorganic sulfur in coal gas by wet process

Examples

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Effect test

Embodiment 1

[0029] Blast furnace gas after TRT in a steel company, temperature 40-60℃, pressure 6-10kPa, total sulfur content 80-130mg / Nm 3 , of which the hydrogen sulfide content is 30-50mg / Nm 3 , the sulfur dioxide content is less than 10mg / Nm 3 , carbonyl sulfide content 50-70mg / Nm 3 , carbon disulfide content is less than 5mg / Nm 3 , using the device and method of the present invention to carry out the side line desulfurization test, the sulfur-containing gas flow rate is 3000Nm 3 / h, supergravity rotating bed desulfurizer circulating flow rate 1m 3 / h, the flow rate of rich desulfurizer sent to the sedimentation tank is 0.1m 3 / h, the total sulfur in the gas after desulfurization does not exceed 20mg / Nm 3 , wherein the hydrogen sulfide content does not exceed 5 mg / Nm 3 .

Embodiment 2

[0031] Blast furnace gas after TRT in a steel company, temperature 50-70℃, pressure 8-12kPa, total sulfur content 150-240mg / Nm 3 , of which hydrogen sulfide content is 50-90mg / Nm 3 , the sulfur dioxide content is less than 10mg / Nm 3 , carbonyl sulfide content 80-110mg / Nm 3 , carbon disulfide content 10-30mg / Nm 3 , hydrogen chloride content 10-30mg / Nm 3 , using the device and method of the present invention to carry out the side line desulfurization test, the test gas flow rate is 4000Nm 3 / h, supergravity rotating bed desulfurizer circulation flow 2m 3 / h, the flow rate of rich desulfurizer sent to the sedimentation tank is 0.2m 3 / h, the total sulfur in the gas after desulfurization does not exceed 20mg / Nm 3 , wherein the hydrogen sulfide content does not exceed 5 mg / Nm 3 .

Embodiment 3

[0033] A company's coke oven gas, the total sulfur content of the gas is 450-600mg / Nm 3 , of which the hydrogen sulfide content is 150-200mg / Nm 3 , carbonyl sulfide and carbon disulfide content 300-400mg / Nm 3 , using the device and method of the present invention to carry out the side line desulfurization test, the sulfur-containing gas flow rate is 3000Nm 3 / h, temperature 30-45°C, pressure 10-15kPa, supergravity rotating bed desulfurizer circulation flow 3m 3 / h, the flow rate of rich desulfurizer sent to the sedimentation tank is 0.45m 3 / h, the total sulfur in the gas after desulfurization does not exceed 20mg / Nm 3 , wherein the hydrogen sulfide content does not exceed 5mg / Nm 3 .

[0034] Such as Figure 1-3 As shown, the present invention uses a high-gravity rotating bed combined with a proprietary desulfurizer to perform one-step wet desulfurization of sulfur-containing gas. The supergravity rotating bed technology is a new technology that uses a hypergravity envi...

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Abstract

The invention discloses a device and a method for removing organic sulfur and inorganic sulfur in coal gas by a wet method. The device comprises a supergravity rotating bed, a coal gas liquid removal tank, a blade separator, a desulfurizing agent buffer tank, a desulfurizing agent sedimentation tank and a fresh desulfurizing agent preparation tank, the method comprises the following steps: S1, removing organic sulfur and inorganic sulfur in sulfur-containing coal gas; s2, treating and utilizing the desulfurized rich desulfurizer; and S3, removing liquid drops entrained in the desulfurized coal gas, and recovering the desulfurizer. The device and the method can solve the problems of large gas pressure loss, high energy consumption, high desulfurization cost and difficulty in solid waste treatment in a dry desulfurization process, and the problems of short service life of a solid hydrolysis catalyst, high desulfurization cost and difficulty in waste liquid treatment in a semi-dry desulfurization process, so that the effects of short process route, small equipment quantity, low device investment, simplicity and convenience in operation and low cost are achieved. The treated coal gas has no pressure loss, the liquid desulfurizing agent is automatically and continuously replaced, no waste gas or solid waste is generated, and the desulfurization cost is low.

Description

technical field [0001] The invention relates to the technical field of coal gas desulfurization, in particular to a device and method for wet removal of organic sulfur and inorganic sulfur in coal gas. Background technique [0002] Blast furnace gas is a by-product of the blast furnace ironmaking process, and its main components are CO (20-25%), CO 2 (15~22%), N 2 (55%), H 2 and CH 4 Very little content, O 2 The content generally does not exceed 1%, and the calorific value is about 3500KJ / m 3 , Blast furnace gas is mainly used as fuel in iron and steel enterprises for ironmaking and sintering, pellets, blast furnace hot blast stoves, steel rolling heating furnaces, heat treatment furnaces, and gas-fired boilers in self-provided thermal power plants. Coke oven gas is a by-product of coking, the main component is H 2 (55~60%), CH 4 (23~27%), CO (5~8%), C 2 The above unsaturated hydrocarbons (2~4%), CO 2 (1.5~3%), O 2 (0.3~0.8%)), N 2 (3~7%), calorific value is about...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/02C10K1/12C10K1/00
CPCC10K1/002C10K1/004C10K1/12C10K1/02
Inventor 喻武钢张勇高志强田佳佳刘国祥程胜福郭洪河吕进飞梁玮徐振华
Owner NINGBO ZHANGFU ENERGY TECH CO LTD
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