Integrated device for coal pyrolysis and activated carbon production

Abstract

The invention discloses a coal pyrolysis and activated carbon production integrated device. The integrated device comprises a thermal insulation jacket, a preheating furnace, a pyrolysis furnace used for performing pyrolysis on preheated coal, an activating furnace used for activating semi-coke generated after pyrolysis, and an activating agent conveying pipe used for inputting gas activating agents into the activating furnace. The preheating furnace, the pyrolysis furnace and the activating furnace are sequentially communicated from top to bottom. An activating furnace heating cavity is formed between the activating furnace and the thermal insulation jacket. A gas conveying channel is formed between the thermal insulation jacket and the pyrolysis furnace. The activating furnace is provided with an associated gas outlet for associated gas produced through activation of the semi-coke to enter the gas conveying channel. A gas heat carrier inlet for the associated gas to enter the pyrolysis furnace from the gas conveying channel is formed in the side wall of the pyrolysis furnace. The integrated device can effectively improve the pyrolysis and activation efficiency, the tar yield is effectively increased, high-quality coal gas, tar and activated carbon can be produced at the same time, and the additional value for quality-divided processing and utilizing of the coal is improved.

Description

technical field [0001] The invention belongs to the technical fields of coal pyrolysis and activated carbon production, and in particular relates to an integrated device for coal pyrolysis and activated carbon production. Background technique [0002] In the process of coal processing and utilization, the pyrolysis process and the activation process are usually different processes carried out separately. The existing pyrolysis process is pyrolysis under inert atmosphere conditions such as nitrogen, also known as dry distillation, such as coal pyrolysis, biomass pyrolysis, etc. The pyrolysis device is a fixed bed, and all heat carriers required for pyrolysis are provided externally. Catalysts cannot be separated in catalytic pyrolysis. After the semi-coke obtained from pyrolysis is cooled, it is activated by fixed bed technology to prepare activated carbon. Pyrolysis of high-temperature semi-coke requires cooling, and the activation process requires high-temperature heating...

AI Technical Summary

Problems solved by technology

Among them, the activated rising gas and the pyrolyzed semi-coke share a channel, which is easy to block the gas path and is not easy to spread to the pyrolysis zone; moreover, the activation heat source uses partial combustion of semi-coke for heat supply, which not only reduces the production capacity of activated carbon, but also increases The ash content of the product reduces the quality of activated carbon; in addition, the product is cooled by low-temperature cooling, and the heat utilization is low.

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