Desulphurization and dust removal integral cylinder heating furnace system and desulphurization and dust removal method thereof

Abstract

The invention relates to a desulphurization and dust removal integral cylinder heating furnace system and a desulphurization and dust removal method thereof. A dry absorbent injection port is formed in the upper part of a cylinder heating furnace radiation section, and the dry absorbent injection port is connected to an absorbent injection system through a pipeline; the lower part of a chimney isa dust removal and desulphurization section, and the upper part of the chimney is a pressurization section; a liquid disconnecting disc is arranged at the bottom of the dust removal and desulphurization section, an absorbent size spraying device is arranged at the upper part of the dust removal and desulphurization section, a fog capturing layer is arranged on the top of the dust removal and desulphurization section, and a circulating size outlet is formed in the chimney above the liquid disconnecting disc; the circulating size outlet and the absorbent size spraying device are connected with an adsorbent size circulating conveying system respectively; a cutting valve is arranged at the bottom of the pressurization section, an exhaust gas outlet is formed in the chimney below the cutting valve, a pressurization exhaust gas inlet is formed in the chimney above the cutting valve, and the exhaust gas outlet and the pressurization exhaust gas inlet are connected to an exhaust gas fan through pipelines respectively. The structure of a cylinder heating furnace is improved, and the functions of dust removal and desulphurization are integrated into one body, so that emission indexes meet the environmental protection standard requirement after the treatment of exhaust gas.

Description

technical field [0001] The invention relates to the technical field of cylindrical heating furnaces, in particular to an integrated cylindrical heating furnace system for desulfurization and dust removal and a desulfurization and dust removal method thereof. Background technique [0002] Many equipment units in the metallurgical coking industry's chemical production recovery and tar processing process use cylindrical heating furnaces to provide the heat required for the process to the distillation tower, heat transfer oil, reaction raw materials or other media. The cylindrical heating furnaces used are based on each According to the existing conditions of the factory, fuel oil, purified coke oven gas, coal, natural gas, etc. are used as fuel. Because coking plants generally have raw coal gas, the most common fuel is purified coke oven gas, accounting for about 95% of the total. above. Since the purified coke oven gas contains a certain amount of sulfur, sulfur dioxide will ...

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Problems solved by technology

[0004] Due to the existing purification process of purified coke oven gas or other reasons, the sulfur content index of flue gas after combustion of purified coke oven gas cannot meet the requirements of environmental protection regulations. Among them, the old gas purification system technology is relatively backward, and the flue gas contains sulfur The index seriously exceeds the limit value of the environmental protection standard

For heating furnaces that use fuel oil and coal as fuel, due to insufficient desulfurization measures in the pre-procedure process, the emission index of sulfur dioxide content in the flue gas cannot meet the requirements of environmental protection regulations

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