Centrifugal rotary crystallizer and recovery tower for efficiently recovering carbon dioxide

Abstract

The invention relates to a centrifugal rotary crystallizer and a recovery tower for efficiently recovering carbon dioxide. The centrifugal rotary crystallizer comprises a crystallizer body, a motor for driving the crystallizer body to rotate and heat dissipation devices mounted on the two sides of the crystallizer body; the crystallizer body comprises a center shaft, a plurality of crystallizationtubes, fixed structures and a reinforced structure; one end of the center shaft is connected with the motor; the plurality of crystallization tubes surround the center shaft and are arranged in parallel to the center shaft, and each of the two ends of the crystallization tubes is fixed with the one fixed structure; the fixed structures are sheathed on the center shaft and are fixed; the reinforced structure is used for reinforcing a relative position relationship between the crystallization tubes and the center shaft, the motor rotates to drive the center shaft to rotate and further drive thecrystallizer body as a whole. The centrifugal rotary crystallizer can use a high-concentration (20-40 percent) sodium carbonate circulating solution, is low in energy consumption, small in equipmentsize, very high in equipment utilization rate, full in reaction, high in crystallization efficiency and is not required to be heated and cooled; meanwhile, the crystallization does not affect the production, and a fault that the tower is blocked by the crystallization cannot be generated.

Description

technical field [0001] The invention relates to a centrifugal rotating crystallizer and a recovery tower for efficiently recovering carbon dioxide. Background technique [0002] In chemical plants, sintering plants, cement kiln plants, breweries, coal chemical plants, petrochemical plants, methanol washing and other devices, there is a large amount of carbon dioxide tail gas that needs to be recovered and processed. Some of the conventional methods are buried underground, and some are purified. It is used to extract oil, and some are made into dry ice, which has the problems of high cost and large investment. In addition, there are conventional processes for producing a large amount of sodium bicarbonate using sodium carbonate, carbon dioxide and other substances, all of which use carbonization towers and sodium bicarbonate crystallization processes. , reduce the concentration of sodium carbonate and sodium bicarbonate, and use a large amount of cooling capacity to cool the...

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Problems solved by technology

[0002] In chemical plants, sintering plants, cement kiln plants, breweries, coal chemical plants, petrochemical plants, methanol washing and other devices, there is a large amount of carbon dioxide tail gas that needs to be recovered and processed. Some of the conventional methods are buried underground, and some are purified. It is used to extract oil, and some are made into dry ice, which has the problem of high cost and large investment.

In addition, there are conventional processes for producing a large amount of sodium bicarbonate using sodium carbonate, carbon dioxide and other substances, all of which use carbonization towers and sodium bicarbonate crystallization processes. , reduce the concentration of sodium carbonate and sodium bicarbonate, and use a large amount of cooling capacity to cool the crystallization box in the subsequent process, resulting in high mother liquor circulation rate, high energy consumption, and oversized equipment, so energy consumption and cost are reduced, and failures and maintenance are reduced costs, it is important to improve equipment utilization

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