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Process method for purifying raw coke oven gas from pulverized coal gasification furnace

A purification process and gasifier technology, which are applied in the fields of combustible gas purification, combustible gas purification/transformation, chemical industry, etc. Large dust content and other problems, to achieve the effect of small footprint, low water consumption and low dust content

Inactive Publication Date: 2010-12-08
鞍钢集团工程技术有限公司 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Because the purification process adopts a wet process, the energy consumption of the system (water, electricity, steam, etc.) is high, the sewage treatment facility occupies a large area, the secondary pollution is serious, the dust removal efficiency is low, the dust content of the clean gas is large, and the pipe The road is blocked seriously, and the sludge cannot be well comprehensively utilized

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  • Process method for purifying raw coke oven gas from pulverized coal gasification furnace
  • Process method for purifying raw coke oven gas from pulverized coal gasification furnace
  • Process method for purifying raw coke oven gas from pulverized coal gasification furnace

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Embodiment Construction

[0031] An embodiment of the present invention is described in detail below in conjunction with accompanying drawing:

[0032] Raw coal gas 1 from the low-temperature cyclone dust collector of Ende type pulverized coal gasifier, the primary cooling of raw coal gas 1 adopts evaporative cooling device 2, which not only reduces the temperature of the gas, but also keeps the raw gas in an unsaturated state to enter the dry pulse Dust removal device 3; Raw coal gas 1 is cooled to 200 ℃ ~ 220 ℃ through the unsaturated cooler 2 and then enters the bag-type pulse dust collector 3 to control the dust concentration of the clean gas at the outlet of the pulse bag filter ≤ 10mg / Nm 3 , the dust in the gas is removed and discharged in the form of dry ash, the purified gas is cooled to 55-65°C by the saturated cooler 4, pressurized by the blower of the gas pressurization station 5, and enters the gas desulfurization station 6, and the desulfurized gas The clean gas is for user 7 to use. The ...

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Abstract

The invention discloses a process method for purifying raw coke oven gas from a pulverized coal gasification furnace, which is characterized by adopting a wet dedusting method. The process flow is untreated gases generated by the pulverized coal gasification furnace-devaporizer-pulse bag type dust remover-saturation cooler-gas cabinet-gas pumping station-gas desulfuration-gas users. In order not to pollute the environment, dust separated from the devaporizer and the pulse bag type dust remover is processed by the following process: dust-pneumatic conveyor-storage house-vacuum tank car-dust users. The invention has the advantages of simplifying and purifying system flows, reducing the construction investment and area occupied, improving the purifying efficiency, saving the energy consumption for purification, reducing the purifying cost, preventing the secondary pollution by dust and recycling the dry ash by means of measures such as unsaturated cooling, wet dedusting and wet ash discharging so as to realize the comprehensive effect of using the fly ash.

Description

technical field [0001] The invention belongs to the field of coal gas purification, in particular to a process method for purifying raw coal gas from an Ende type pulverized coal gasifier. Background technique [0002] At present, the purification of raw coal gas generated by Ende type pulverized coal gasifier generally adopts wet process and equipment. The raw coal gas generated by this kind of pulverized coal gasifier is initially cooled by a saturated cooling tower, and then dedusted by a wet venturi tube. Coarse dust removal, and then dehydration by moisture separator and fine dust removal by wet electrostatic precipitator to purify the gas, and the purified clean gas is pressurized for use by users; The dusty sewage generated by the electrostatic precipitator enters the sewage treatment plant for treatment, and the treated sewage is recycled by the circulating pump station, and the sludge is used after being air-dried. [0003] Because the purification process adopts a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/00C10K1/04C10K1/02
CPCY02P20/10
Inventor 王树凡李松张生刚赵潞徐新宇
Owner 鞍钢集团工程技术有限公司
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