Method for desulfurizing the exhaust gas containing sulfureted hydrogen and organic sulfur

A technology of organic sulfur and hydrogen sulfide, applied in chemical instruments and methods, separation methods, and separation of dispersed particles, can solve the problems of biological methods such as poor adaptability and impact resistance, and achieve low cost, low investment and operating costs, and preparation The effect of simple method

Inactive Publication Date: 2003-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biological method has poor adaptability and impact resistance, and is not suitable for exhaust gases with complex components and sharp fluctuations in concentration.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 84g basic zinc carbonate (5ZnO 2CO 2 4H 2 (2), wherein 75g is roasted at 430C for 3h, the zinc oxide obtained after roasting is mixed with all the other 9g basic zinc carbonates, and 23g of titanium oxide industrial catalyst carrier powder is weighed, and 17g of alumina industrial catalyst carrier powder is weighed. Add water to the powder and stir evenly to make a slurry, slowly drop 40% nitric acid into the alumina slurry, let it stand for 50 minutes, add the weighed zinc oxide, basic zinc carbonate and titanium oxide, roll and extrude into φ1mm strips, Dry at 120°C for 4 hours, and bake at 500°C for 3 hours to obtain a desulfurizer.

[0016] Simulate industrial waste gas in the laboratory, and use fixed bed reactor to fill sample desulfurizer for waste gas treatment. Introduce 200 μl / l benzene, 200 μl / l cyclohexane, 600 μl / l hydrogen sulfide, 200 μl / l methyl mercaptan, 50 μl / l methyl sulfide, 50 μl / l dimethyl disulfide in the air, and the reaction temperature...

Embodiment 2

[0018] Weigh 91g basic zinc carbonate (5ZnO 2CO 2 4H 2 (2) wherein 80g is roasted at 430° C. for 3 h, the zinc oxide obtained after roasting is mixed with the remaining 11 g basic zinc carbonate, and 20 g of titanium oxide industrial catalyst carrier powder is weighed, and 15 g of alumina industrial catalyst carrier powder is weighed, Add water to the aluminum powder and stir evenly to make a slurry, slowly add 40% nitric acid dropwise to the alumina slurry, let it stand for 50 minutes, add the weighed zinc oxide, basic zinc carbonate and titanium oxide, roll, and extrude into φ1mm strips , dried at 120°C for 4h, and calcined at 500°C for 3h to obtain a desulfurizer.

[0019] Simulate industrial waste gas in the laboratory, and use fixed bed reactor to fill sample desulfurizer for waste gas treatment. Introduce 200μl / l benzene, 200μl / l cyclohexane, 400μl / l hydrogen sulfide, 100μl / l methyl mercaptan, 50μl / l dimethyl disulfide in the air, the reaction temperature is 200℃, and ...

Embodiment 3

[0021] Weigh 98g basic zinc carbonate (5ZnO 2CO 2 4H 2 (2), wherein 88g is roasted at 430°C for 3h, the zinc oxide obtained after roasting is mixed with the remaining 10g basic zinc carbonate, and 15g of titanium oxide industrial catalyst carrier powder is weighed, and 15g of alumina industrial catalyst carrier powder is weighed, Add water to the aluminum powder and stir evenly to make a slurry, slowly add 40% nitric acid dropwise to the alumina slurry, let it stand for 50 minutes, add the weighed zinc oxide, basic zinc carbonate and titanium oxide, roll and extrude into φ2mm strips , dried at 120°C for 4h, and calcined at 500°C for 3h to obtain a desulfurizer.

[0022] Simulate industrial waste gas in the laboratory, and use fixed bed reactor to fill sample desulfurizer for waste gas treatment. Introduce 200 μl / l benzene, 200 l / l cyclohexane, 20 μl / l ammonia, 200 μl / l hydrogen sulfide, 20 μl / l methyl mercaptan, 20 μl / l dimethyl sulfide, 20 μl / l dimethyl disulfide in the air...

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PUM

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Abstract

A process for desulfurizing the waste gas containing HS and organic sulfur features that said waste gas is contacted with the desulfurizing agent whose active components are ZnO, TiO2 and Al2O3 at 180-320 deg.c.

Description

1. Technical field [0001] The invention relates to a method for desulfurizing waste gas, in particular to a method for desulfurizing waste gas containing hydrogen sulfide and organic sulfur. The invention also relates to a special desulfurizing agent for desulfurizing waste gas containing oxygen and a preparation method thereof. The invention belongs to the technical field of exhaust gas purification and treatment. 2. Background technology [0002] Generally speaking, there are two types of gas desulfurization, one is the removal of sulfur oxides, and the other is the removal of hydrogen sulfide and organic sulfides. Usually, sulfur oxides exist in oxidizing atmospheres, such as flue gas, etc., hydrogen sulfide and organic sulfides usually exist in reducing atmospheres, such as natural gas, synthetic ammonia raw material gas, etc. The use of solid desulfurizers is a common way of gas desulfurization, and the desulfurizers required for different exhau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48B01D53/52B01D53/82
Inventor 张海波刘忠生李东旭杨占林
Owner CHINA PETROLEUM & CHEM CORP
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