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Method for removing sulfide in oil burning boiler tail gas

An oil-fired boiler and sulfide technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of high price of amino desulfurizers, ammonia gas leakage, poisoning, etc., and achieve fast precipitation and not easy to scale. , the effect of less dosage

Inactive Publication Date: 2016-02-03
李宇花
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of amino desulfurizer is high, and special transportation, storage, metering and delivery equipment are required. The leakage of ammonia gas will cause environmental problems such as odor and poisoning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for removing sulfide in the tail gas of an oil-fired boiler. The tail gas of the oil-fired boiler is passed through a pipeline into a sufficient amount of desulfurizer, and the sulfur dioxide, sulfur trioxide and hydrogen sulfide in the tail gas react with the desulfurizer to form complexes and precipitate Remove by filtration, the desulfurizer includes the following components by weight fraction:

[0050] 13 parts of 5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-4H-1-benzofuran-4-one,

[0051] 16 parts of harringtonine,

[0052] 0.9 parts of 7-hydroxy-6-methoxy-2H-1-benzopyran-2-one,

[0053] Pentahydroxyflavone-3-rhamnoside 8 parts,

[0054] 5 parts of 3-methyl o-diazepine,

[0055] 17 parts of methallyl phenyl ether,

[0056] 13 parts of Tetrahydrocompostin,

[0057] 0.7 parts of 4,4'-sulfonyl dianiline,

[0058] 9 parts of ethyl 3-methyl-3-phenyloxirane carboxylate,

[0059] 3 parts of 5-allyl-2,3-(methylenedioxy) anisole,

[0060] 12 parts of 2,5-dimet...

Embodiment 2

[0069] A method for removing sulfide in the tail gas of an oil-fired boiler. The tail gas of the oil-fired boiler is passed through a pipeline into a sufficient amount of desulfurizer, and the sulfur dioxide, sulfur trioxide and hydrogen sulfide in the tail gas react with the desulfurizer to form complexes and precipitate Remove by filtration, the desulfurizer includes the following components by weight fraction:

[0070] 16 parts of 5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-4H-1-benzofuran-4-one,

[0071] 19 parts of harringtonine,

[0072] 1.1 parts of 7-hydroxy-6-methoxy-2H-1-benzopyran-2-one,

[0073] Pentahydroxyflavone-3-rhamnoside 10 parts,

[0074] 7 parts of 3-methyl o-diazepine,

[0075] 19 parts of methallyl phenyl ether,

[0076] 15 parts of Tetrahydrocompostin,

[0077] 0.9 parts of 4,4'-sulfonyl dianiline,

[0078] 12 parts of ethyl 3-methyl-3-phenyloxirane carboxylate,

[0079] 4 parts of 5-allyl-2,3-(methylenedioxy) anisole,

[0080] 14 parts of 2,5-dimet...

Embodiment 3

[0089] A method for removing sulfide in the tail gas of an oil-fired boiler. The tail gas of the oil-fired boiler is passed through a pipeline into a sufficient amount of desulfurizer, and the sulfur dioxide, sulfur trioxide and hydrogen sulfide in the tail gas react with the desulfurizer to form complexes and precipitate Remove by filtration, the desulfurizer includes the following components by weight fraction:

[0090] 15 parts of 5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-4H-1-benzofuran-4-one,

[0091] 18 parts of harringtonine,

[0092] 1.0 parts of 7-hydroxy-6-methoxy-2H-1-benzopyran-2-one,

[0093] Pentahydroxyflavone-3-rhamnoside 9 parts,

[0094] 6 parts of 3-methyl o-diazepine,

[0095] 18 parts of methallyl phenyl ether,

[0096] 14 parts of Tetrahydrocompostin,

[0097] 0.8 parts of 4,4'-sulfonyl dianiline,

[0098] 11 parts of ethyl 3-methyl-3-phenyloxirane carboxylate,

[0099] 3 parts of 5-allyl-2,3-(methylenedioxy) anisole,

[0100] 13 parts of 2,5-dime...

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PUM

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Abstract

The invention relates to a method for removing sulfide in oil burning boiler tail gas. The method includes the step that the oil burning boiler tail gas is introduced into enough desulfurizer through a pipeline, and sulfur dioxide, sulfur trioxide and hydrogen sulfide in the tail gas react with the desulfurizer to form complex precipitates to be filtered out. The desulfurizer is prepared from, by weight, 5,7-trihydroxy-2-(3,4,5-trihydroxy phenyl)-4H-1-benzofuran-4-ketone, harringtonin, 7-hydroxy-6-methoxy-2H-1-benzofuran-2-ketone, pentahydroxy flavone-3-rhamnoside, 3-methyl pyridazine, 4-acetoxyl-3-methoxy-(2-propenyl) benzene, 4,4'-sulfonyldiphenylamine and the like. According to the treatment method, the capacity of complexing the target substances is high, the speed of forming the complex precipitates is high, the removal rate can reach 99%, cost is low, usage amount is small, scale formation is avoided, and the environment is not damaged.

Description

technical field [0001] The invention relates to a treatment method for removing sulfur dioxide, sulfur trioxide and hydrogen sulfide in the tail gas of an oil-fired boiler, and belongs to the technical field of environmental protection. Background technique [0002] Desulfurizers generally refer to agents that remove free sulfur or sulfur compounds in fuels, raw materials or other materials; in the control and treatment of pollutants, they mainly refer to the removal of sulfur compounds (such as SO 2 , SO 3 and H 2 S) Agents used. Several commonly used desulfurizers are: calcium-based desulfurizer, sodium-based desulfurizer, magnesium-based desulfurizer, amino desulfurizer, etc. [0003] Calcium-based desulfurizers are most commonly used in desulfurization. Commonly used calcium-based desulfurizers include lime, slaked lime, carbide slag, limestone, and dolomite, which can also be obtained from calcium-rich industrial waste residues and raw materials. The advantage of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/50B01D53/52
Inventor 李宇花
Owner 李宇花
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