A device and method for producing synthetic ammonia using wet coke quenching belt

Abstract

The invention relates to a device for production of synthetic ammonia by a wet coke quenching zone and a production method thereof. The invention utilizes the high temperature steam generated by a coke quenching furnace (2) as the low rank coal gasification raw material, thus saving energy. Compared with existing dry coke quenching devices, the device provided by the invention has a simple process, is free of a circulating gas system, and greatly reduces fixed cost investment. Further, the invention makes full use of low rank coal as the raw material, and reduces the raw material cost of synthetic ammonia. As the coal gasification process is a heat absorbing process, the sensible heat of hot coke makes up part of the energy consumption, the high temperature water gas purification process needs to be carried out under a low temperature condition, feedwater is employed to cool high temperature coal gas to produce low temperature steam, and the part of heat is fully utilized to coke quenching and synthetic ammonia production reach organic integration, etc.

Description

【Technical field】 [0001] The invention relates to the research and application field of coking and coal deep processing, in particular to a device and a production method for producing synthetic ammonia by using a wet coke quenching belt. 【Background technique】 [0002] It is known that my country is a major coke producer. In 2014, the national coke output was about 476.9 million tons, an increase of 7.4% over the previous year. Among them, combined iron and steel coking enterprises basically adopt CDQ technology. For independent coking enterprises, the huge investment required by CDQ technology is unbearable, and there is no good solution for the treatment of coking wastewater after adopting CDQ technology. Therefore, most enterprises still adopt the traditional wet coke quenching process. The traditional wet coke quenching process wastes a lot of energy in the production process, and at the same time discharges a large amount of pollutants, destroys the environment, and ca...

AI Technical Summary

Problems solved by technology

Among them, the joint iron and steel coking enterprises basically adopt CDQ technology. For independent coking enterprises, the huge investment required by CDQ technology is unbearable, and there is no good solution for the treatment of coking wastewater after adopting CDQ technology.

Therefore, most enterprises still adopt the traditional wet coke quenching process. The traditional wet coke quenching process wastes a lot of energy in the production process, and at the same time discharges a large amount of pollutants, destroys the environment, and causes harm to the health of employees.

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