Waste gas export device for coal gangue pyrolysis and gasification

Abstract

The present invention discloses a coal gangue pyrolysis gasification raw gas export apparatus, which comprises a raw gas centralization chamber, an inner export channel, an outer export channel, an export main channel, and an export ring channel, wherein the raw gas centralization chamber and a pyrolysis gasification chamber are integratedly molded, the inner export channel is arranged in a flue partition wall, an inner export channel inlet penetrates through the middle portion of an inner ring wall, and is communicated with the pyrolysis gasification chamber, an inner export channel outlet penetrates through the inner ring wall, and is communicated with the raw gas centralization chamber, the outer export channel is arranged in an outer wall of a furnace body, a lower-outer export channel inlet and an upper-outer export channel inlet penetrate through the middle portion of an outer ring wall, and are communicated with the pyrolysis gasification chamber, an outer export channel outlet penetrates through the outer ring wall, and is communicated with the raw gas centralization chamber, the export main channel is arranged the outer wall of the furnace body of a coal pyrolysis furnace, is communicated with the raw gas centralization chamber, and extends upward to the export ring channel on the upper portion of the outer wall of the furnace body, and the export ring channel is provided with a raw gas export port. According to the present invention, raw gas generated during coal gangue pyrolysis gasification is exported so as to easily achieve pyrolysis gasification and raw gas production, recovery and utilization.

Description

technical field [0001] The invention relates to coal gangue pyrolysis gasification technology, in particular to a raw coal gas exporting device for coal gangue pyrolysis gasification. 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 products (components are silicon dioxide, aluminum oxid...

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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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