Hot waste gas active coke regeneration device combining pyrolysis and gasification of coal gangue and purification and combustion of raw gas

Abstract

The invention discloses a hot waste gas active coke regeneration device combining pyrolysis and gasification of coal gangue and purification and combustion of raw gas, which comprises a coal gangue pyrolysis device and a water gas reaction device of a coal gangue pyrolysis and gasification device, a raw gas guiding device and an active coke regenerator, wherein the raw gas guiding device comprises a raw gas concentration chamber, an inner guiding channel, an outer guiding channel, a main guiding channel and a guiding loop; the active coke regenerator comprises a regenerator shell, a hot waste gas evaporation pipe network and an unsaturated active coke recovery bin; the regenerator shell is provided with an evaporation oil gas discharge pipe; the waste gas evaporation pipe network forms an independent loop and is arranged in the cavity of the regenerator shell; the bottom of the waste gas evaporation pipe network is provided with a hot waste gas intake pipe, and the top is provided with a hot waste gas discharge pipe; the purified raw gas is combusted; and the waste gas after combustion is transferred into the hot waste gas intake pipe of the active coke regenerator. According to the invention, saturated active coke adsorbed due to purification is heated and evaporated to become unsaturated active coke, thus facilitating the reutilization of the unsaturated active coke.

Description

technical field [0001] The invention relates to coal gangue pyrolysis gasification technology, in particular to a coal gangue pyrolysis gasification raw coal gas purification combustion heat waste gas active coke regeneration device. Background technique [0002] Coal gangue - the stone selected from raw coal is the waste residue of coal preparation plants, which is not easy to deal with. In China, hundreds of millions of tons of coal gangue cannot be used every year, and it still continues to discharge about 100Mt every year. It not only accumulates and occupies land, but also It can spontaneously combust and pollute the air or cause a fire, causing serious environmental pollution. [0003] Due to coalification for hundreds of millions of years, coal gangue contains 20-30% of carbon, oil, and gas substances, of which oil and gas account for 11-15%, and carbon accounts for 7-15%. Pyrolysis and gasification of coal gangue to obtain oil and gas products and 70-80% solid produ...

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Problems solved by technology

[0002] Coal gangue - the stone selected from raw coal is the waste residue of coal preparation plants, which is not easy to deal with. In China, hundreds of millions of tons of coal gangue cannot be used every year, and it still continues to discharge about 100Mt every year. It not only accumulates and occupies land, but also It can spontaneously combust to pollute the air or cause a fire, causing serious environmental pollution

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