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Method for simultaneously removing multiple harmful impurity from coal gas

A technology for removing impurities, applied in separation methods, chemical instruments and methods, and purification of combustible gases, etc., can solve problems such as inability to meet the purification requirements of chemical production, high investment in step-by-step treatment devices, and high operating costs for multi-stage purification. , to achieve the effects of small footprint, low labor intensity and easy operation

Inactive Publication Date: 2006-12-20
HUAXI CHEM INST CHENGDU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For these impurities, the use of conventional purification methods is not only far from meeting the purification requirements of chemical production, but also requires a high investment in step-by-step treatment devices and high operating costs for multi-stage purification.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A steel company 22000Nm 3 / h coke oven gas purification device

[0027] Impurities

[0028] name

[0029] 3. Adsorption parameters

[0030] 3.1 Adsorption tower φ3600×9320 4 sets

[0031] 3.2 Adsorbent coke, silica gel, iron oxide desulfurizer, modified activated carbon, alumina and

[0032] Composition of ceramic balls

[0033] 3.3 Filling parameters Number of filling layers 6 layers

[0034] The total height of filling is 5.82 meters

[0035] 4. Regeneration parameter Regeneration temperature 360~450℃

[0036] Regeneration pressure 0.015MPa

[0037] Carrier Gas Composition Steam

[0038] The regeneration cycle is 45 days.

[0039] 5. Purification result

[0040] Impurities

[0041] name

Embodiment 2

[0043] A steel company 15000Nm 3 / h coke oven gas purification device

[0044] Impurities

[0045] name

[0046] 3. Adsorption parameters

[0047] 3.1 Adsorption tower φ3200×15120 6 sets

[0048] 3.2 Adsorbent coke, 5A molecular sieve, swamp iron ore and diatomite molding, activated carbon, iron

[0049] Composition of manganese zinc desulfurizer, alumina, 10A molecular sieve and ceramic ball

[0050] 3.3 Filling parameters Loading layers 8 layers

[0051] The total height of filling is 12.5 meters

[0052] 4. Regeneration parameter Regeneration temperature 300~450℃

[0053] Regeneration pressure 0.015MPa

[0054] Carrier Gas Composition Steam

[0055] The regeneration cycle is 90 days.

[0056] 5. Purification result

[0057] Impurities

[0058] name

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PUM

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Abstract

This invention provides a method for removing tar, naphthalene, ammonia, hydrogen sulfide, organic sulfur, HCN and benzene from coal gas in one apparatus at the same time, characterizing: simultaneously absorb more than 50 impurities that are harmful to chemical production such as tar, naphthalene, ammonia, hydrogen sulfide, organic sulfur, HCN and benzene by the various, multi-layer adsorbents filled inside the absorption column. desorb the 50 more impurities from the absorbents by heated carrier gas, and obtain different kind and relatively enriched impurities according to different carrier gas temperature and desorbing time, such as naphthalene rich didymium, sulfur rich didymium, and rich didymium of benzene and homology thereof. The different kind and relatively enriched impurities can be directly sent to the recovering system of coke-oven plant for recovering and reusing and producing chemical products with high added value.

Description

Technical field: [0001] The invention relates to a method for simultaneously removing tar, naphthalene, ammonia, hydrogen sulfide, organic sulfur, HCN and benzene in the same set of process equipment, through various and layered adsorbents filled in the adsorption tower At the same time, it adsorbs and removes more than 50 kinds of impurities harmful to chemical production, such as tar, naphthalene, ammonia, hydrogen sulfide, organic sulfur, HCN and benzene. Background technique: [0002] The composition of newly processed or post-production coke oven gas and coal gas is very complex, but its use is relatively wide. Domestically, the use of coke oven gas is abandoned due to the complexity of the composition of coke oven gas, which not only causes a lot of waste of high-quality energy, but also does not Purified coke oven gas and gas flaring will seriously pollute the environment. [0003] The gas produced by coking plants and coal-to-gas plants generally needs to be recycle...

Claims

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Application Information

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IPC IPC(8): C10K1/20C10K1/32B01D53/04
Inventor 曾轲王俊昌盛晓萍肖九高张天来
Owner HUAXI CHEM INST CHENGDU CITY
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