Coking chemical product blower shutdown emergency device

Abstract

The invention discloses a coking chemical product blower shutdown emergency device, which is characterized in that a pipeline with a cutoff valve and a relief valve is led out from a coke oven gas compressor outlet to a fine desulfurization filter pipeline to connect to the position in front of a pressure control valve and behind an upstream valve of a pressure control valve group on a pipeline of a fuel gas buffer tank from a coking chemical product blower to a conversion preheating furnace; when the coking chemical product blower suddenly shuts down due to accident, the conversion preheating furnace fuel gas pressure drops and conversion production is affected, the upstream valve and the cutoff valve of the front pressure control valve group of the conversion preheating furnace and the fuel gas buffer tank are switched. The inventive device is simple in structure and convenient in operation, and solves the problem of low fuel gas pressure of the co-production synthetic ammonia conversion preheating furnace caused by shutdown of the coking chemical product blower by accident, to avoid influence on conversion reaction of coke oven gas and ensure safe production.

Description

technical field [0001] The invention relates to synthetic ammonia production equipment in the chemical industry, in particular to an emergency device for shutting down a coking chemical production blower. Background technique [0002] The blower for coking and chemical production is shut down at least 5 times a year. Although the blower for coking and chemical production is on and off, when the blower in operation suddenly stops due to an accident, the standby machine will be turned on and run normally for at least 10 minutes to convert synthetic ammonia. The fuel gas of the preheating furnace comes from the outlet of the chemical blower to the synthetic ammonia gas tank system. In 10 minutes, the fuel gas pressure of the reforming preheating furnace is reduced from 8-11kpa to 0.36kpa, and the temperature of the coke oven gas at the outlet of the reforming preheating furnace is reduced from 660 When the temperature drops to 500°C, the conversion reaction of coke oven ...

AI Technical Summary

Problems solved by technology

[0002] The blower for coking and chemical production is shut down at least 5 times a year. Although the blower for coking and chemical production is on and off, when the blower in operation suddenly stops due to an accident, the standby machine will be turned on and run normally for at least 10 minutes to convert synthetic ammonia. The fuel gas of the preheating furnace comes from the outlet of the chemical blower to the synthetic ammonia gas tank system. In 10 minutes, the fuel gas pressure of the reforming preheating furnace is reduced from 8-11kpa to 0.36kpa, and the temperature of the coke oven gas at the outlet of the reforming preheating furnace is reduced from 660 ℃ drops to 500 ℃, which affects the conversion reaction of coke oven gas, and the methane content of reformed gas at the outlet of the reformer may be unqualified

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