Low-rank coal quality-improving pyrolysis equipment

Abstract

The invention discloses low-rank coal quality-improving pyrolysis equipment. The low-rank coal quality-improving pyrolysis equipment comprises a closed kiln with a feed inlet and a discharge outlet. A high-temperature gas pipeline is arranged in the kiln. A low-rank coal propelling and decomposing channel is formed between the high-temperature gas pipeline and the inner wall of the kiln. A decomposed gas collection pipe communicated with the low-rank coal propelling and decomposing channel is arranged on the kiln. The high-temperature gas pipeline is communicated with a high-temperature gas output / input mechanism arranged on the surface of the kiln. The low-rank coal quality-improving pyrolysis equipment has the advantages that the high-temperature gas output / input mechanism arranged on the surface of the kiln is communicated with the high-temperature gas pipeline to enable high-temperature gas to pass in the high-temperature gas pipeline, heat brought by the high-temperature gas is fully absorbed and decomposed by low-rank coal, and fuel gas, tar gas and coal with high heat value are generated in the low-rank coal propelling and decomposing channel through decomposition.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of coal materials, energy saving and emission reduction, and in particular relates to a pyrolysis device for improving the quality of low-rank coal. Background technique [0002] In my country, low-rank coal reserves represented by lignite and low-metamorphic bituminous coal account for more than 55% of the total coal resources, mainly distributed in eastern Inner Mongolia, Yunnan, Xinjiang and the Ordos Basin. As high-metamorphic coals are used less and less, the optimal utilization of low-rank coals becomes increasingly important. Compared with the technical or economic problems in the direct utilization of low-rank coal, the utilization of low-rank coal after upgrading should become an important direction. As a technology that realized industrialization later than coal gasification technology, the upgrading of low-rank coal has virtually been endowed with the expectation of "...

AI Technical Summary

Problems solved by technology

[0005] This kind of coal material decomposition equipment can solve the decomposition problem of low-rank coal, especially pulverized coal, but the relatively complicated internal heating mechanism and distribution mechanism will easily bring about the uncertainty of heating temperature in the production process and the stability of normal production, especially During the decomposition process of low-rank coal, the temperature control and adjustment of different areas inside the rotary kiln body in a high-temperature environment is a relatively difficult problem to solve

Images