Method for solving large pressure difference of iron-molybdenum catalyst in iron-molybdenum converter

Abstract

The invention relates to a method for solving large pressure difference of an iron-molybdenum catalyst in an iron-molybdenum converter, relates to a method for regenerating the iron-molybdenum catalyst, and is used for solving the problem that the stop treatment needs to be carried out and the treatment speed is low when the pressure difference of the existing iron-molybdenum catalyst is large. According to the method, an iron-molybdenum converting system comprises a heating furnace, the iron-molybdenum converter, a first coke oven gas pipe, a second coke oven gas pipe, a fuel gas pipe and an escape pipe; after coke oven gas is fed in the heating furnace and is heated to 400 DEG C, the coke oven gas is mixed with the coke oven gas in the normally running iron-molybdenum converter together to be fed in the iron-molybdenum converter, so that an iron-molybdenum bed is heated till the hot-spot temperature of the bed is 450-500 DEG C; impurities such as coil tar oil and benzene adhered on the surface of the iron-molybdenum catalyst are melted and move downwards, so that the pressure difference of the catalyst bed is reduced, and then the temperature of the iron-molybdenum catalyst bed is reduced to the level of normal production. The method is performed under the condition that facilities such as equipment, pipelines and valves of a fine desulfurization system are not changed, and the pressure difference of the iron-molybdenum catalyst is reduced without stopping production.

Description

technical field [0001] The invention relates to a solution to the large pressure difference of the iron-molybdenum catalyst. Background technique [0002] Since the coke oven gas contains coal tar, dust, naphthalene, benzene and other impurities, after the wet desulfurization section, the compression section, the oil filter for fine desulfurization and the pre-desulfurization tank, the tar, naphthalene, and benzene in the coke oven gas still cannot Benzene is completely removed, causing some impurities to enter the iron-molybdenum converter, tar adsorbed on the surface of the catalyst, and accumulates for a long time, which increases the pressure difference between the inlet and outlet of the iron-molybdenum converter, and increases the resistance of compressed and transported gas for fine desulfurization conversion, causing coke The load of the furnace gas compressor increases, the valve plate is easily damaged, and the system is forced to stop to replace the catalyst and t...

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the problem that the existing iron-molybdenum catalyst has a large pressure difference and needs to be regenerated under the condition of parking, and the speed is slow, and solves the problem of the large pressure difference of the iron-molybdenum catalyst in the iron-molybdenum converter

[0004] The method for solving the iron-molybdenum catalyst pressure difference in the iron-molybdenum converter of the present invention is carried out according to the following steps:

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