Carbon dioxide waste gas treatment device for dry ice machine

Abstract

The invention discloses a carbon dioxide waste gas treatment device for a dry ice machine. The waste gas produced by the dry ice machine comprises the continuous waste gas output from a hydraulic station, and the intermittent waste gas output from the pre-crystalline tank and a crystalline cylinder barrel, wherein the continuous waste gas and the intermittent waste gas converge into one strand, the waste gas treatment device comprises a first buffer tank for leading the continuous waste gas in, and a second buffer tank for leading the intermittent waste gas in, the first buffer tank communicates with the second buffer tank, the first buffer tank is connected to the input end of a compressor, the output end of the compressor is connected to the input end of an adsorption bed, the output endof the adsorption bed is connected to the input end of a liquidator, the output end of the liquefaction is connected to the input end of a flash evaporator, and the output end of the flash evaporatoris connected to a liquid-state carbon dioxide storage tank. By means of the carbon dioxide waste gas treatment device, the continuous waste gas and the intermittent waste gas converge into one strand, and the gas with the stable pressure is output by the compressor and recycled as liquid-state carbon dioxide through a follow-up device.

Description

technical field [0001] The invention relates to the field of dry ice production, and more specifically relates to a carbon dioxide waste gas treatment device of a dry ice machine. Background technique [0002] 1. If figure 1 As shown, in the dry ice production process, the liquid carbon dioxide storage tank 11 is often directly connected to the crystallization cylinder 4 (although it is not directly connected in this way in the figure), so that the liquid carbon dioxide is crystallized and extruded in the crystallization cylinder 4 . But along with the storage capacity of liquid carbon dioxide in the liquid carbon dioxide storage tank 11 gradually decreases, its internal pressure will decrease, thereby the speed of supplying liquid carbon dioxide to the crystallization cylinder 4 will slow down, and the movement frequency of the piston 51 in the crystallization cylinder 4 will be reduced. Corresponding adjustments are troublesome to operate and reduce efficiency; and becaus...

AI Technical Summary

Problems solved by technology

The continuous exhaust gas 71 and the intermittent exhaust gas 72 are different exhaust gases. If they are treated separately, two sets of devices are needed, and the cost is too high; if they are treated at the same time, the effect may be poor due to unstable pressure.

Images