Low temperature pyrolysis device for coal

Abstract

The invention relates to a low temperature pyrolysis device for coal. The low temperature pyrolysis device for coal is characterized by sequentially comprising a feeder, a reactor, a dust remover and a separation tower according to the reaction sequence; the feeder is used for providing a raw material coal briquette in the reactor; the reactor is used for conducting pyrolysis on the raw material coal briquette; the dust remover is used for removing dust of a volatile matter produced in the pyrolysis of the reactor, and the dust remover keeps heating in the working process; and the separation tower is used for separating the volatile matter subjected to dust removal treatment. The low temperature pyrolysis device for coal does not cause pipeline blockage easily, and the production of low temperature pyrolysis of coal is stably and efficiently implemented. The low temperature pyrolysis device for coal avoids secondary heating of the relatively pure volatile matter obtained through the dust remover, saves energy, is environmentally friendly, and is very efficient.

Description

technical field [0001] The invention belongs to the technical field of coal heating cracking, and in particular relates to a coal low-temperature pyrolysis device. Background technique [0002] Coal thermal cracking (coal dry distillation, coal pyrolysis) is one of the important processes of coal chemical industry. It refers to the process in which coal is heated and decomposed under air-isolated conditions to produce coke (or semi-coke), coal tar, crude benzene, gas and other products. According to the difference in the final heating temperature, it can be divided into three types: 900-1100°C is high-temperature pyrolysis (high-temperature dry distillation), that is, coking; 700-900°C is medium-temperature pyrolysis; 500-600°C is low-temperature pyrolysis. [0003] At present, the low-temperature pyrolysis of coal generally adopts the internal heat method of solid heat carrier. The method firstly mixes the preheated small pieces of raw coal with the catalyst in the feeder...

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Problems solved by technology

[0007] In order to solve the problem that the existing coal low-temperature pyrolysis device is prone to pipeline blockage and low production efficiency, the present invention provides a low-temperature coal pyrolysis device that does not require secondary heating, is energy-saving and environmentally friendly, is not prone to pipeline blockage, and has high production efficiency.

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