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Treatment method for sulfur-containing industrial waste gases

A treatment method and technology for industrial waste gas, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of waste of sulfur-containing gas, environmental pollution, etc., achieve enhanced adsorption capacity, reduce water vapor content, and improve adsorption performance Effect

Inactive Publication Date: 2018-04-06
吴亚琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention: the current main treatment method for yellow phosphorus tail gas is combustion treatment, which not only wastes sulfur-containing gas, but also pollutes the environment, while other purification methods such as water washing, temperature swing adsorption , pressure swing adsorption and catalytic oxidation methods also have insufficient defects, providing a sulfur-containing industrial waste gas treatment method

Method used

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  • Treatment method for sulfur-containing industrial waste gases

Examples

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Effect test

example 1

[0023] Weigh 0.5 kg of activated carbon and place it in a mortar for grinding for 16 minutes to pass through an 80-mesh sieve to collect the sieved activated carbon powder. Soak in a beaker of nickel nitrate solution for 1h to obtain the soaked sieved activated carbon powder, then rinse the soaked sieved activated carbon powder with deionized water, and adjust the pH to 6, remove the carbon powder and impurities adhering to the carbon particles, and obtain For the washed activated carbon, continue to place the washed activated carbon in a muffle furnace at 500°C for 1 hour, discharge the material to obtain modified activated carbon, mix potassium dihydrogen phosphate, sodium nitrate, and sucrose in an equal mass ratio to obtain a mixture, and then mix the mixture Mix with water at a mass ratio of 1:3, stir at a temperature of 20°C for 12 minutes to obtain a self-made mixture, and weigh 30 parts of self-made activated carbon and 16 parts of self-made mixture in parts by weight a...

example 2

[0025] Weigh 0.6 kg of activated carbon and place it in a mortar for grinding for 18 minutes to pass through a 90-mesh sieve, collect the sieved activated carbon powder, put the sieved activated carbon powder into 40 mL of nitric acid solution with a mass fraction of 3% and 25 mL of 35% nitric acid with a mass fraction of Soak in a beaker of nickel nitrate solution for 1.5h to obtain the soaked sieved activated carbon powder, then rinse the soaked sieved activated carbon powder with deionized water, and adjust the pH to 7 to remove the carbon powder and impurities adhering to the carbon particles. To obtain the water-washed activated carbon, continue to place the water-washed activated carbon in a muffle furnace at 600° C. for roasting for 1.5 h, discharge the material to obtain a modified activated carbon, mix potassium dihydrogen phosphate, sodium nitrate, and sucrose in an equal mass ratio to obtain a mixture, and then Mix the mixture and water at a mass ratio of 1:3, and st...

example 3

[0027] Weigh 0.7kg of activated carbon and put it in a mortar and grind for 20min to pass through a 100-mesh sieve, collect the sieved activated carbon powder, put the sieved activated carbon powder into 3% nitric acid solution with 50mL mass fraction and 30mL mass fraction of 35% Soak in a beaker of nickel nitrate solution for 2h to obtain the soaked sieved activated carbon powder, then rinse the soaked sieved activated carbon powder with deionized water, and adjust the pH to 8, remove the carbon powder and impurities adhering to the carbon particles, and obtain For the washed activated carbon, continue to place the washed activated carbon in a muffle furnace at 700°C for 2 hours and discharge the material to obtain modified activated carbon. Mix potassium dihydrogen phosphate, sodium nitrate, and sucrose in an equal mass ratio to obtain a mixture, and then mix the mixture Mix with water at a mass ratio of 1:3, stir at a temperature of 30°C for 16 minutes to obtain a self-made...

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Abstract

The invention discloses a treatment method for sulfur-containing industrial waste gases, and belongs to the technical field of waste gas treatment and preparation. According to the method provided bythe invention, a series of modification such as acid washing, catalysis with a heavy metal salt solution and activation are performed on activated carbon, since the activated carbon has a large specific surface area and a developed pore structure, the activated carbon has good adsorption performance, thereby facilitating adsorption of sulfur-containing gases in the waste gases; a self-prepared mixed liquid obtained by mixing of an anaerobic thiobacillus denitrificans bacterial suspension liquid, potassium dihydrogen phosphate, sodium nitrate, sucrose and deionized water is added, so that the adsorption capacity of the activated carbon to the sulfur-containing gases is enhanced; condensation is performed through chilled water, and an ''ice split'' principle is utilized, so that the water vapor content in the waste gases is reduced and the activity of the activated carbon is prevented from being destroyed by the water vapor; since the activated carbon adsorption is an exothermic reaction, waste gases with a lower temperature enter an adsorption tower, adsorption of the sulfur-containing gases in the waste gases by the activated carbon is facilitated; and the treatment method for theindustrial waste gases not only recovers the sulfur-containing gases, but also has no pollution to the environment.

Description

technical field [0001] The invention discloses a treatment method for sulfur-containing industrial waste gas, which belongs to the technical field of waste gas treatment and preparation. Background technique [0002] Industrial waste gas refers to the general term for all kinds of pollutant gases that are discharged into the air during fuel combustion and production processes in the enterprise factory area. [0003] These exhaust gases include: carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, lead mercury sulfate, beryllium compounds, soot and productive dust, which will pollute the air when discharged into the atmosphere. These substances enter the human body through the respiratory tract in different ways, some directly cause harm, and some have a cumulative effect, which will seriously endanger human health. Different substances will have different effects. [0004] The principles of industrial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/30B01J20/20B01J20/28054
Inventor 姜建国杨立军陈莉莉
Owner 吴亚琴
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