Dry ice production device capable of reducing carbon dioxide loss and production method thereof

Abstract

The invention relates to a dry ice production device capable of reducing carbon dioxide loss and a production method thereof. The device comprises a liquid carbon dioxide production device, a liquid carbon dioxide storage tank connected with the liquid carbon dioxide production device and a dry ice granulator, and the liquid carbon dioxide storage tank is connected with the dry ice granulator through a precooling separation unit. The precooling separation unit and a gas phase outlet of the dry ice granulator are connected with a liquid carbon dioxide storage tank through a gas phase recovery part; the gas phase recovery part comprises a liquefaction precooling unit connected with the precooling separation unit and a gas phase outlet of the dry ice granulator, and a gas compression unit and a gas liquefaction unit which are sequentially connected with the liquefaction precooling unit; and the method has the advantages of being simple in process, convenient to operate, economical, reliable, environment-friendly, energy-saving, easy to popularize and capable of effectively recycling the diffused gas carbon dioxide and reducing the liquid carbon dioxide consumption during dry ice production.

Description

technical field [0001] The invention relates to the technical field of dry ice production, in particular to a dry ice production device and a production method for reducing carbon dioxide loss. Background technique [0002] Dry ice is the solid form of carbon dioxide. At present, the main process of producing dry ice is to form solid dry ice by throttling and reducing the pressure of liquid carbon dioxide. During this process, dry ice equipment and process pipelines make the finished dry ice continuously sublime. In the above production process, it will A large amount of low-temperature carbon dioxide gas is produced, and this part of carbon dioxide gas is generally discharged directly. The consumption of liquid carbon dioxide in the above-mentioned dry ice production process is as high as 3.2 tons per ton of dry ice. At the same time, the concentration of carbon dioxide in and around the production plant is too high, which will cause health problems for production operators....

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Problems solved by technology

[0002] Dry ice is the solid form of carbon dioxide. At present, the main process of producing dry ice is to form solid dry ice by throttling and reducing the pressure of liquid carbon dioxide. During this process, dry ice equipment and process pipelines make the finished dry ice continuously sublime. In the above production process, it will A large amount of low-temperature carbon dioxide gas is produced, and this part of carbon dioxide gas is generally discharged directly. The consumption of liquid carbon dioxide in the above-mentioned dry ice production process is as high as 3.2 tons per ton of dry ice. At the same time, the concentration of carbon dioxide in and around the production plant is too high, which will cause health problems for production operators. Hazard; does not conform to the concept of energy saving, low carbon and environmental protection

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