Heat transfer room type heat recovery coke-oven

Abstract

The invention discloses a novel cell-type coking furnace, wherein the coal is subjected to destructive distillation in charring chamber, most of the obtained coal gas enters horizontal gas channel, and is divided to adjacent blast chambers through the coal gas distribution hole, the rest is distributed to each blast chamber. The dedusted thermal waste gas can be used by exhaust-heat boiler to produce steam power generation.

Description

technical field [0001] The invention relates to a chamber-type coking oven, which belongs to a coal high-temperature dry distillation coking device. Background technique [0002] After more than a century of development of mechanized conventional coke ovens, its furnace body structure tends to the mode of "coke oven body with regenerator structure" mainly to meet the complex chemical production recovery process. At present, the coking industry in many places has become a major local polluter. First of all, this furnace structure will produce a large amount of BaP, SO 2 、H 2 S. NO X , TSP and other air pollutants, these pollutants must be collected and treated, the current treatment methods are mainly the use of high-pressure ammonia (or steam) injection, coal loading truck equipped with washing and purification combined system and other technologies; in addition, due to the gradual large-scale and high efficiency, the production cost of chemical products has been greatly...

AI Technical Summary

Problems solved by technology

Since the internal heating non-recovery coke oven does not separate the carbonization chamber from the combustion chamber, the heat required for carbonization is supplied by the spontaneous combustion of coking coal at the end of coking, and the coal consumption increases by more than 5%, so the coking rate is low and the ash content is high; And the down-flame coke oven currently in production, although the carbonization chamber and the combustion chamber are separated, there is still a technical process that the heating gas cannot be reasonably and effectively allocated to the requirements of each stage of the coking process, and there is an excess of gas in the early stage of coking and insufficient gas in the later stage Difficulties, the usual solution can only be to adopt the method of spontaneous combustion of coke in the later stage of coking to meet the heat required for dry distillation and prolong the coking time (up to 48-80h)

Because these non-recovery coke ovens have no corresponding air preheating means, they cannot use coal blending with low volatile content for coking, otherwise there will be a problem of insufficient gas, which not only limits the source of coking coal, but also cannot solve the spontaneous combustion of coke and prolong coking. time, resulting in low production efficiency, waste of coal resources and other shortcomings

Although the heat exchange coke oven built by German company Didier in the Prosper Coking Plant uses heat exchange devices, the materials used are special metals, which not only require high investment, but also have a short life, so its promotion has been greatly restricted

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