Improved method for producing food grade liquid carbon dioxide product and distillation and purification tower
A technology of liquid carbon dioxide and carbon dioxide, which is applied in the production field of food-grade liquid carbon dioxide products, can solve the problems of insufficient cooling capacity and loss of carbon dioxide.
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[0061] The specific implementation of the production method of the food-grade liquid carbon dioxide product of the present invention will be described in detail below with reference to the accompanying drawings, and the characteristics and advantages of the production method of the food-grade liquid carbon dioxide product of the present invention will become more obvious.
[0062] see figure 1 , the production method of a kind of improved food-grade liquid carbon dioxide product of the present invention, comprises the following steps:
[0063] (1) Compression process 30
[0064] The carbon dioxide raw material gas containing mechanical water, methane, ethylene, benzene and other impurities with a carbon dioxide content of about 99.2% from outside the boundary area is washed with water, and the chemical reaction that is mediated by the regulating valve 2 controlled by the orifice flowmeter 1 is slightly adjusted. The excess oxygen is mixed and enters the pre-cooler 10 for pre...
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