Abstract: The invention relates to a flowmeter for liquid/gas two-phase cryogenic fluids, including: a separator of the liquid/gas phases, preferably made up of a vessel, the cryogenic fluid being admitted into the top portion of said vessel; a liquid flow sensor, located on a liquid pipe in fluid communication with the bottom portion of the vessel, the vessel being placed in the top position in the space relative to the liquid flow sensor; a gas pipe, in fluid communication with the upper portion of the vessel, provided with a flow sensor of the gas phase circulating in said gas pipe; a three-way valve capable of recovering, in two of the channels thereof (A/B), the downstream end of said gas pipe and the downstream end of said liquid pipe; and a device for measuring the level of liquid in the vessel, preferably comprising two level sensors: a bottom level sensor and a top level sensor.

Abstract: A process to produce at least carbon dioxide and carbon monoxide from a feed gas containing carbon dioxide, hydrogen and carbon monoxide; comprises separating at least part of the carbon dioxide from the compressed feed gas by partial condensation and/or distillation producing a carbon dioxide product and a carbon dioxide depleted stream, treating the carbon dioxide depleted stream in a treatment unit to produce a feed stream containing carbon monoxide and hydrogen, less rich in carbon dioxide than the carbon dioxide depleted stream and feeding at least part of the feed stream containing carbon monoxide and hydrogen to a separation unit operating at cryogenic temperatures to produce a carbon monoxide product.