Abstract: A system for sampling cryogenic liquids, and an air separation unit provided with at least one such system. The cryogenic liquid is introduced into a vaporizer, through heat exchange with the compressed air. The liquid passes through the vaporizer generally downwards. The walls of the vaporizer that are intended to come into contact with the cryogenic liquid are maintained at a temperature above the sublimation temperature or the boiling point of the least volatile impurity contained in this liquid. Downstream of the vaporizer, a gaseous phase coming from the vaporization of the cryogenic liquid is withdrawn and at least some of the gaseous phase is sent to an analyzer.

Abstract: Method and apparatus for creating a gaseous mixture containing controlled amounts of hydrogen and carbon monoxide. Hydrogen and carbon monoxide are produced through partial catalytic oxidation reactions between hydrocarbons and oxygen. The oxidation takes place in a reactor at a temperature of less than 1200° C. and at a pressure between 3 bar and 20 bar. A gas mixture of hydrogen and some carbon monoxide is then recovered from the oxidation. This mixture is transferred to a cooling chamber where it is cooled, by direct contact with pressurized water, to a temperature between ?20° C. and 80° C. The cooled gas is also at a pressure between 3 bar and 20 bar. The cooling chamber and the reactor are both located in the same vessel, such that the gas transport time between the two is less than 50 milliseconds.

Abstract: According to this method: