Movable sulfurization active carbon heating regenerator and regeneration

Abstract

A movable heating apparatus for regenerating the used desulfurizing activated carbon is composed of a feeding segment consisting feeding cabin and gas locking valve, a transition segment with regenerating gas pumping-in inlet, a heating-regenerating segment with heat exchanger, a stage-one cooling segment, a stage-two cooling segment with heat exchanger, and an gas-in and material-discharging segment. Its regenerating process is also disclosed.

Description

technical field [0001] The invention relates to a technical field of air pollution control, in particular to a regeneration device and a regeneration method for regenerating desulfurization activated carbon that has lost part or all of its activity. Background technique [0002] At present, in order to solve the problems of environmental pollution caused by coal burning and lack of sulfur resources in my country, and to promote the establishment of a conservation-oriented society and sustainable economic development in China, activated carbon flue gas desulfurization technology has been vigorously developed in recent years. This technology uses activated carbon as a desulfurizer to absorb sulfur dioxide in flue gas and store it in the micropores of activated carbon in the form of hydrated sulfuric acid. With the progress of adsorption and reaction, the activity of activated carbon gradually decreases. In order to ensure the continuous desulfurization process, the activated c...

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Problems solved by technology

Because the heat capacity and heat transfer coefficient of the gas are small, and the gas at the outlet of the heating section is used to cool the activated carbon, the gas outlet temperature must be very low. Therefore, this kind of regeneration equipment requires a large heat exchange area, the equipment is bulky, and it is difficult to overhaul ;In addition, the draft of the induced draft fan is limited, and it is impossible to extract all the regeneration gas, which will inevitably cause part of the regeneration gas to move to the cooling section with the activated carbon. When the sulfur oxides in the regeneration gas reach the low temperature area, it will corrode the heat exchange surface. Most of the sulfur oxides in the low-temperature zone are re-adsorbed by activated carbon, resulting in a reduction in regeneration efficiency; the service life of the equipment is short, the heat exchange surface in the lower part of the cooling section is severely corroded, and the operation and maintenance workload is heavy; if air is used as the circulating gas, there are still local corrosion and perforation, Potential safety hazards of air leakage and activated carbon combustion burning out regeneration equipment

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