Pyrolysis raw gas high-temperature efficient dust removal method

A raw gas, high temperature technology, applied in the direction of gas dust removal, removal of gas pollutants, combustible gas purification, etc., can solve the problems that affect the service life of the dust removal device, blockage of equipment and pipelines, complex composition of crude gas, etc., to reduce Safe production risk, super long service life, and the effect of improving safety and stability

Pending Publication Date: 2021-03-12
国科永基(北京)工程安装有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The composition of high-temperature dusty crude gas is very complex. The initial temperature of crude gas is about 500°C~800°C, and it is sensitive to temperature changes. Tar is easy to condense when the temperature decreases; Particles agglomerate and adhere to the inner wall surface of the equipment, causing blockage of equipment and pipelines, seriously affecting the service life of the dust removal device

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  • Pyrolysis raw gas high-temperature efficient dust removal method
  • Pyrolysis raw gas high-temperature efficient dust removal method
  • Pyrolysis raw gas high-temperature efficient dust removal method

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Embodiment Construction

[0039] The application will be described in further detail below in conjunction with the accompanying drawings.

[0040] The embodiment of this application discloses a high-temperature, high-efficiency, explosion-proof integrated modular dust removal equipment for pyrolysis crude gas, such as figure 2 , image 3 As shown, the pyrolysis crude gas high-temperature, high-efficiency, explosion-proof integrated modular dust removal equipment includes a casing 1, a high-temperature ceramic filter system 2, a high-pressure backflushing system 3, and a pre-dust removal system 4.

[0041] Wherein, the inside of the casing 1 has a chamber that allows the medium to flow in or out, and the outer side of the casing 1 is provided with an air inlet and an air outlet communicating with the chamber, and the air outlet is relatively located above the air inlet. The exterior of the casing 1 is covered with a thermal insulation layer, which is used to reduce the interaction between the high-tem...

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PUM

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Abstract

The invention discloses a pyrolysis raw gas high-temperature efficient dust removal method which comprises the following steps of externally connecting an enclosure with induced draft equipment to form negative pressure in a gas purification chamber, and pumping high-temperature dust-containing raw gas into a pre-dust remover from an outlet of a coal gasifier to perform primary dust removal, enabling the pre-dedusted raw gas to enter a dust collection chamber, performing fine dedusting by utilizing a ceramic fiber filter tube, and enabling the pre-dedusted raw gas to enter a gas purification chamber to obtain high-temperature purified gas, transferring the high-temperature clean gas into a washing tower and a drop catcher for deep purification and cooling to finish dust removal, and afterlong-time work, using a high-pressure blowback system to perform blowback ash removal on the ceramic fiber filter tube. According to the dust removal method, high-temperature dust-containing raw gas can be directly filtered, the situation that the raw gas needs to be cooled before being filtered by a cloth bag dust removal device in an existing coal-to-gas process is improved, and the problem thatdust below 2 mum is removed and separated again is effectively solved.

Description

technical field [0001] The application relates to the technical field of coal gas dedusting and purification, in particular to a high-temperature and high-efficiency dedusting method for pyrolysis crude gas. Background technique [0002] Coal-to-gas refers to the process of injecting air, water vapor or hydrogen into coal or coal char to produce combustible gas under high temperature and high pressure conditions. It is an important way and means for clean utilization of coal resources. [0003] The application of coal gasification combined cycle power generation system has further promoted the development of coal-to-gas technology, but the high-temperature gas produced by coal-to-gas contains a large amount of dust, which will not only reduce the quality of gas, but also cause wear and tear on the blades of the gas turbine, reducing the efficiency of the gas turbine. service life and working efficiency. Therefore, it is necessary to dedust and purify the high-temperature ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/02C10K1/08C10K1/10C10K1/04
CPCC10K1/002C10K1/02C10K1/024C10K1/04C10K1/046C10K1/08C10K1/10
Inventor 幸乾富
Owner 国科永基(北京)工程安装有限公司
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