Hydrogen phosphide gas purification device

Abstract

The invention relates to the technical field of tobacco leaf storage, in particular to a hydrogen phosphide gas purification device. The device includes a movable vehicle frame, which is equipped withan induced draft fan, a primary purification tower for primary purification of hydrogen phosphide gas and a second-stage purification tower for secondary purification of hydrogen phosphide gas, the induced draft fan has a pumping port and an air outlet, the primary purification tower has a first air inlet port and a first gas outlet, the second-stage purification tower has a second air inlet portand a second gas outlet, the pumping port is communicated with the inside of an airtight goods stack, the air outlet is communicated with the first air inlet port, the first gas outlet is communicated with the second air inlet port, and the second gas outlet is communicated with the outside air. The primary purification tower and the second-stage purification tower are employed for hydrogen phosphide gas purification twice, thus ensuring no direct discharge of hydrogen phosphide gas inside the airtight goods stack into the atmosphere. With the advantages of compact structure, small volume andconvenient movement, the hydrogen phosphide gas purification device provided by the invention can be applied to hydrogen phosphide gas purification of airtight goods stacks.

Description

technical field [0001] The invention relates to the technical field of tobacco leaf storage, in particular to a phosphine gas purification device. Background technique [0002] At present, in the tobacco industry, most of the tobacco leaf fumigation process is no longer suitable for whole warehouse fumigation. In order to prevent mildew and insect pests during the storage process, the tobacco is stacked in the form of stacking, sealed with plastic film, and then placed in the airtight container. Release phosphine gas in the stack for fumigation to achieve the purpose of mildew prevention and insecticide. After phosphine gas is fumigated, some phosphine gas will remain in the closed cargo stack. Since phosphine is a highly toxic gas and is highly corrosive, the residual phosphine gas will be discharged directly into the atmosphere without treatment. It will cause harm to personnel and electrical equipment, so it is necessary to purify the residual phosphine gas. [0003] Th...

AI Technical Summary

Problems solved by technology

After phosphine gas is fumigated, some phosphine gas will remain in the closed cargo stack. Since phosphine is a highly toxic gas and is highly corrosive, the residual phosphine gas will be discharged directly into the atmosphere without treatment. It will cause harm to personnel and electrical equipment, so it is necessary to purify the residual phosphine gas

[0003] The phosphine gas purification device in the prior art is mainly suitable for large-scale storage warehouses. The main body of the purification tower is mostly cylindrical. The overall structure of the device has the characteristics of uncompact design, large volume, and inconvenient movement, and is not suitable for airtight cargo stacks. Phosphine gas purification

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