Low-rank coal upgrading device

Abstract

The invention discloses a low-rank coal upgrading device and relates to the technical field of coal efficient cleaning and conversion. The device comprises a plurality of carbonization rooms used for carbonization and dry distillation of coal entering cavities of the carbonization rooms, combustion rooms, and heat storage rooms, wherein the combustion rooms and the carbonization rooms are alternately arranged at intervals, the combustion rooms are used for heating the carbonization rooms, the side wall of each combustion room is provided with at least one pair of combustion room through holes in pairs, the combustion room through holes are communicated with the cavities in the combustion rooms, one of the combustion room through holes in one pair forms a fuel and air inlet, and the other one of the combustion room through holes in one pair forms a hot flue gas outlet; the heat storage rooms are used for storing heat of flue gas, the side wall of each heat storage room is provided with two heat storage room through holes, namely the first heat storage room through hole and the second heat storage room through hole, communicated with an inner cavity of the heat storage room, and the first heat storage room through holes are communicated with the combustion room through holes forming the hot flue gas outlets.

Description

technical field [0001] The invention discloses a low-rank coal upgrading device, which belongs to the technical field of high-efficiency and clean conversion of coal. Background technique [0002] The quality-based utilization of coal is an effective way to realize the clean and efficient transformation and utilization of low-rank coal resources worldwide. In view of the fact that more than 50% of my country's coal resources are low-rank coals, the utilization of coal by quality has always been an important development direction in my country's advanced energy field, and it is also the most promising coal deep processing technology route in the industry. [0003] Coal separation and utilization refers to a form of coal use in which coal is pyrolyzed through medium and low temperature dry distillation, volatile matter is taken out, including gas and coal tar, and the remaining semi-coke is reused. The development of pyrolysis technology is the core of coal separation and uti...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to solve the problem of high flue gas temperature and large heat loss at the outlet of the combustion chamber of the coal upgrading and carbonization device in the prior art, so as to propose a low-rank coal with high heat conversion efficiency and more economical upgrading device

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