Low-quality coal pyrolysis device

Abstract

The invention discloses a low-quality coal pyrolysis device. The low-quality coal pyrolysis device comprises a closed kiln body with a feed hole and a discharge hole, a high-temperature gas pipeline is arranged in the closed kiln body, a low-quality coal advancing and decomposing channel is formed between the high-temperature gas pipeline and the inner wall of the closed kiln body, and a decomposition gas collecting pipe communicated with the low-quality coal advancing and decomposing channel is arranged on the closed kiln body; the low-quality coal pyrolysis device further comprises a high-temperature gas generating device which is communicated with the high-temperature gas pipeline through a high-temperature gas distributing cover, and the high-temperature gas distributing cover is circumferentially connected with the closed kiln body in a sealing mode. According to the low-quality pyrolysis device, the high-temperature gas generating device is arranged and connected with the high-temperature gas pipeline through the high-temperature gas distributing cover, so that the reliability and stability of the low-quality coal pyrolysis device are improved fundamentally.

Description

Technical field [0001] The invention relates to the technical field of comprehensive utilization of coal materials, energy saving and emission reduction, and in particular to a low-quality coal pyrolysis device. Background technique [0002] In my country, the reserves of low-quality coal represented by lignite and low-grade bituminous coal account for more than 55% of the total coal resources, mainly distributed in eastern Inner Mongolia, Yunnan, Xinjiang and the Ordos Basin. With the increasing use of high-quality coals, the optimal utilization of low-quality coals becomes increasingly important. Compared with the technical or economic problems in the direct utilization of inferior coal, the hierarchical utilization of inferior coal after upgrading should become an important direction. As a technology that is later than the industrialization of coal gasification technology, the upgrading of inferior coal is invisibly given the expectation of "misplaced coal use with coal gasif...

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Problems solved by technology

[0005] This kind of coal material decomposition equipment can solve the problem of decomposition of inferior coal, especially pulverized coal, but the relatively complicated internal heating mechanism and distribution mechanism are likely to cause uncertainty of heating temperature in the production process and instability of normal production; especially During the decomposition process of inferior coal, the temperature control and adjustment of different areas inside the closed kiln body in a high-temperature environment is a relatively difficult problem to solve

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