Guide, condensation, recovery and purification device of raw gas of coal gangue pyrolysis and gasification

Abstract

The invention discloses a guide, condensation, recovery and purification device of a raw gas of coal gangue pyrolysis and gasification. The guide, condensation, recovery and purification device comprises a coal gangue pyrolysis and gasification device including a coal gangue pyrolysis device and a water gas reaction device, a raw gas guide device, a raw gas condensing device and a raw gas recovery and purification device, wherein the raw gas guide device comprises a raw gas concentration chamber, an inner guide channel, an outer guide channel, a main guide channel and an annular guide channel; the raw gas condensing device comprises a condensing shell, a regulating wheel, a screw thread regulating rod, a valve cover, a valve seat, a gas collecting pipe and an aqueous ammonia spray head; the raw gas recovery and purification device comprises a coal tar and aqueous ammonia mixed gas-liquid guide pipe, a coal tar and aqueous ammonia precipitation tank, an air cooler, a coal gas blower set, a dry recycler of active coke, a bucket elevator of the active coke, a regenerator of the active coke, a rectification tower and an oil-and-gas air cooler; the raw gas guide device is communicated with the raw gas condensing device; and the raw gas condensing device is communicated with the raw gas recovery and purification device. The guide, condensation, recovery and purification device can recover and purify the raw gas so as to facilitate utilization.

Description

technical field [0001] The invention relates to coal gangue pyrolysis gasification technology, in particular to coal gangue pyrolysis gasification raw coal gas export condensation and recovery purification 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 products (components are ...

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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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