Regeneration method of desulphurization, denitration and demercuration combined activated coke and special-purpose device thereof

Abstract

The invention discloses a regeneration method of desulphurization, denitration and demercuration combined activated coke and a special-purpose device thereof. The regeneration device comprises a tilting furnace and a material cooler. The tilting furnace is arranged aslant relative to the horizontal plane and a feed inlet of the tilting furnace is higher than a discharge port of the tilting furnace. The feed inlet of the tilting furnace is provided with a feed bin which communicates with a ring cavity of the tilting furnace. The material cooler communicates with the ring cavity of the tilting furnace. The juncture is near the discharge port of the tilting furnace. The invention provides the method for regenerating activated coke by the use of the above device. In comparison with processing capacity of an industrial vertical regeneration reactor, the processing capacity of the tilting furnace in the regeneration device provided by the invention is greatly raised. The device is especially suitable for an utility boiler or other large-scale boiler by large-scale adoption of a flue gas purification technology with activated coke.

Description

technical field [0001] The invention relates to a method for regenerating activated coke combined with desulfurization, denitrification and demercuration and a special device thereof. Background technique [0002] Activated coke flue gas purification technology is an advanced dry flue gas purification technology. This technology has high desulfurization, denitrification, and mercury removal efficiencies. Recycling and utilization of resources can alleviate the current shortage of sulfur resources in my country to a certain extent; the adsorbent used uses coal, which is relatively abundant in my country's reserves, as the main raw material, and the supply of raw materials is fully guaranteed. Therefore, this technology is an efficient and economical joint control technology for coal-fired flue gas pollutants that is suitable for my country's national conditions. [0003] Activated coke after flue gas purification has adsorbed a large amount of SO 2 (existing in the form of s...

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Problems solved by technology

[0005] (1) Due to the small thermal conductivity of active coke and poor heat transfer performance, it takes enough time for heat transfer to reach the regeneration temperature of active coke, and the active coke is in a relatively static state in the regeneration reactor, which causes this type of regeneration reactor The processing capacity is relatively small. For enterprises adopting this kind of flue gas purification technology on a large scale, it is necessary to build multiple sets of regeneration reactors to match the scale of active coke regeneration, so that the energy consumption and land occupation of this type of equipment have great disadvantages.

[0006] (2) Due to the slow decline of activated coke in this type of regeneration reactor, the temperature in some areas may rise sharply. Once the device is sealed or corroded by the regeneration gas, air may enter and cause a fire accident in the reactor

[0007] (3) The flexibility is poor. In order to increase the heat transfer performance of activated coke, many pipes must be arranged inside the regeneration reactor (the pipes transport the heating gas), which leads to the relatively complicated structure of this type of regeneration reaction and high processing performance requirements. It is more difficult to increase the regeneration capacity of activated coke

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