Vacuum rotary dehydration device for separating ultrafine powder in catalytic cracking wet desulfurization

Abstract

The invention relates to a device for filtering, separating and dehydrating ultrafine powder used in a desulfurization system in the environment protection field, in particular to a vacuum rotary dehydration device for separating the ultrafine powder in catalytic cracking wet desulfurization which is used for filtering, separating and dehydrating the ultrafine powder produced by a catalyst in the catalytic cracking wet desulfurization. The equipment comprises a shell, a rotating shaft, ultrafine filter cloth, a distribution shaft head, a stirring device, a gas-liquid separation tank, a vacuum pump and the like. At present, in the domestic catalytic cracking device wet desulfurization process, the ultrafine powder cannot be rationally separated, and the industrial problem can be solved by the device. Negative pressure is produced by using the vacuum pump to perform suction filtration on liquid, dust in the liquid is intercepted on the surface by the dust filter cloth, and filtered mud cakes are filtered, separated and dehydrated through a unique partition structure to realize lower moisture content and can be directly transported.

Description

technical field [0001] The invention relates to a device for filtering, separating and dehydrating ultrafine powder used in desulfurization systems in the field of environmental protection, and in particular to catalytic cracking wet desulfurization for filtering, separating and dehydrating ultrafine powder produced by catalysts in catalytic cracking wet desulfurization Ultrafine powder separation vacuum rotary dehydration device. Background technique [0002] With the continuous development of the oil refining industry, the catalytic cracking unit has become an important means of deep processing of petroleum, and occupies a pivotal position in the oil refining industry. The fuel oil (including gasoline, diesel, aviation kerosene, etc.) that is in daily life needs to undergo catalytic cracking. The reaction is extracted. Catalysts need to be added during the catalytic cracking reaction to ensure the effect of the reaction, and the catalysts finally enter the flue gas wet de...

AI Technical Summary

Problems solved by technology

As the country's efforts to control PM2.5 are increasing, these ultrafine powders must be captured by the desulfurization system. Due to the small particle size of these ultrafine powders, they are viscous, corrosive and toxic, and easy to scale. Therefore, conventional equipment cannot achieve a reasonable separation of these ultrafine powders, resulting in these ultrafine powders entering the various equipment in the system along with the process pipeline, and a large amount of deposition inside the equipment, which often leads to the paralysis of the desulfurization system and large-scale desulfurization after long-term operation. Overhaul

Due to the ultra-fine particle size, large usage, and complex composition, the ultra-fine powder cannot be separated reasonably in the wet desulfurization process of the domestic catalytic cracking unit, which has become one of the problems in the industry.

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