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Coke oven gas power generation method

A coke oven gas and coal gas technology, which is applied in the field of coke oven gas power generation, can solve the problems of excessive sulfur dioxide discharge, unclean removal of benzene and naphthalene, and easy blockage of compressor cooling pipes, and achieves stable operation of the device, reduction in quantity, The effect of reducing production costs

Inactive Publication Date: 2018-07-31
湖北申昙环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that when coke oven gas is used for power generation in the prior art, sulfide, tar, benzene and naphthalene are not removed cleanly in coke oven gas purification, resulting in easy blockage of compressor cooling pipes and excessive sulfur dioxide emissions Problem, the present invention provides a new coke oven gas purification method

Method used

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  • Coke oven gas power generation method

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Effect test

Embodiment 1

[0034] as attached figure 1 As shown, the coke oven gas power generation method includes the following steps: a. The coke oven gas from the coke oven enters the crude debenzene unit, and forms stream I after the crude debenzene, wherein the crude debenzene adopts Y zeolite molecular sieve adsorbent, through The method of adsorption removes benzene; the concentration of benzene in stream I is 2000mg / m 3 Between, the concentration of naphthalene is 1300mg / m 3 b. Stream Ⅰ enters the crude desulfurization unit, and stream Ⅱ is formed after rough desulfurization. Among them, the concentration of hydrogen sulfide in stream Ⅱ is 300 mg / m 3 c. Stream II enters the water-gas separator to remove part of the liquid moisture in the coke oven gas to form stream III; d. Stream III enters the comprehensive purification tower, which contains ZSM-5 molecular sieve At the same time, the aromatics and sulfides in the gas are removed to form stream IV, wherein the concentration of benzene in st...

Embodiment 2

[0036] The coke oven gas power generation method includes the following steps: a. The coke oven gas from the coke oven enters the crude debenzene unit, and the crude debenzene forms stream I, and the crude debenzene adopts ZSM-5 molecular sieve adsorbent, wherein the benzene in stream I Concentration at 1000mg / m 3 Between, naphthalene concentration is 800mg / m 3 b. Stream Ⅰ enters the crude desulfurization unit, and stream Ⅱ is formed after rough desulfurization. Among them, the concentration of hydrogen sulfide in stream Ⅱ is 200 mg / m 3 c. Stream II enters the water-gas separator to remove part of the liquid moisture in the coke oven gas to form stream III; d. Stream III enters the comprehensive purification tower, which contains copper-modified The adsorbent of ZSM-5 molecular sieve can simultaneously remove aromatics and sulfides in gas to form stream IV, wherein the concentration of benzene in stream IV is less than 100mg / m3 3 , naphthalene concentration is less than 4 mg...

Embodiment 3

[0038] The coke oven gas from the coke oven enters the crude debenzene unit, and the crude debenzene forms stream I. The crude debenzene adopts ZSM-5 molecular sieve adsorbent with a silicon-aluminum ratio of 600, and the benzene concentration in stream I is 3000mg / m 3 Between, naphthalene concentration is 400mg / m 3 Between; stream Ⅰ enters the crude desulfurization unit, and forms stream Ⅱ after rough desulfurization, wherein the hydrogen sulfide concentration of stream Ⅱ is 400mg / m 3 Between; stream II enters the water-gas separator, and after removing part of the liquid moisture in the coke oven gas, stream III is formed; stream III enters the comprehensive purification tower, which contains copper and zinc modified ZSM-5 Molecular sieve adsorbent, simultaneously removes aromatics and sulfides in gas to form stream IV, wherein the concentration of benzene in stream IV is less than 100mg / m 3 , naphthalene concentration is less than 4 mg / m 3 Between, hydrogen sulfide concen...

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Abstract

The invention relates to a coke oven gas power generation method, and mainly solves the technical problems that according to coke-oven gas purification in the prior art, sulfide, tar, benzene and naphthalene cannot be removed thoroughly, so that a compressor cooling pipeline is easy to block. The coke oven gas power generation method comprises the following steps: feeding coke oven gas into a coarse debenzolization unit and a coarse debenzolization unit to form a material flow II after coarse debenzolization; feeding the material flow II into a water gas separator to form a material flow III;feeding the material flow III into a comprehensive purification tower to form a material flow IV; feeding material flow IV into a compressor for compression, then sending into a gas turbine for combustion for power generation, and forming a material flow V from tail gas formed after the combustion in the gas turbine, feeding the material flow V into a tail gas desulfurization and denitration unitto remove sulfur dioxide and nitride to form a material flow VI for unloading, the problems are well solved by the method, and the coke oven gas power generation method can be applied in industrial production of coke oven gas power generation.

Description

technical field [0001] The invention relates to a coke oven gas power generation method, in particular to a coke oven gas power generation method used for combustion engine power generation. Background technique [0002] Coke oven gas is mainly a high-energy combustible gas containing hydrocarbons, methane, and hydrogen produced by coking plants, and is generally used as gas-fired power generation. Since the thermal efficiency of gas turbine power generation is higher than that of steam turbine, gas turbine power generation is generally used for coke oven gas power generation in coking plants. However, gas turbine power generation has high requirements on the purity of gas. It is necessary to remove organic substances such as benzene, toluene, xylene, naphthalene, and tar in coke oven gas to prevent clogging of gas turbine nozzles. It is also necessary to remove sulfides in coke oven gas to prevent The emission of sulfur dioxide in the flue gas after combustion exceeds the ...

Claims

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Application Information

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IPC IPC(8): C10K1/00C10K1/20B01D53/02B01D53/14B01D53/18B01D53/52
CPCB01D53/02B01D53/1487B01D53/18B01D53/52B01D2251/404B01D2251/602B01D2251/606B01D2253/102B01D2253/108B01D2253/116B01D2257/30B01D2257/302B01D2257/304B01D2257/306B01D2257/40B01D2257/7027B01D2259/40024C10K1/00C10K1/002C10K1/004C10K1/205
Inventor 彭继荣马海洋李建
Owner 湖北申昙环保新材料有限公司