SYSTEMS AND METHODS FOR RECOVERING CARBON DIOXIDE FROM INDUSTRIALLY RELEVANT WASTE STREAMS, ESPECIALLY ETHANOL FERMENTATION PROCESSES, FOR APPLICATION IN FOOD AND BEVERAGE PRODUCTION
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Jun 26, 2015
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Jul 3, 2014
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A system for recovering CO2 via liquefaction and purification from a vented CO2 gas stream comprising a compressor; a dehydrator; a scrubber; a refrigerator having one or more stages; and a separation subsystem adapted to ensure non-condensable gas content in the final product meets industry standards. The liquid CO2 product is of sufficient purity to be used in applications requiring beverage-grade CO2. The system can be utilized as a single-brewery installation to reduce venting from ethanol fermenters to an absolute minimum, produce a high purity liquid CO2 product for use in-process or external sales, and offset the purchasing of expensive, industrial CO2 of inferior purity.
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