摘要:
A process for separating a gas mixture in a separation unit of the type in which the gas mixture comes from a reaction unit and comprises, as main constituents, hydrogen (H2) and/or carbon monoxide (CO).
摘要:
The invention concerns a method for combined production of hydrogen and carbon dioxide from a mixture of hydrocarbons wherein the residual PSA is treated to produce a carbon dioxide-enriched fluid, and wherein: the residual PSA is compressed to a pressure such that the partial pressure of the CO 2 contained ranges between about 15 and 40 bar; the residue is subjected to one or more condensation/separation steps with production of CO 2 -rich condensate(s) and a purge of noncondensable gas; the purge of noncondensable gas is preferably treated to produce a H 2 -rich permeate which is recycled to the PSA, and a residue which is recycled to syngas generation, Preferably, the condensate(s) are purified by cryogenic distillation to produce food grade CO 2 . The invention also concerns an installation for implementing the method.
摘要:
A process for separating a gas mixture in a separation unit of the type in which the gas mixture comes from a reaction unit and comprises, as main constituents, hydrogen (H2) and/or carbon monoxide (CO).
摘要:
The present invention relates to limiting emissions of nitrogen oxides into the environment. In particular, the present invention relates to an improved process for the catalytic reduction of nitrogen oxides to nitrogen
摘要:
The invention concerns a method for combined production of hydrogen and carbon dioxide from a mixture of hydrocarbons wherein the residual PSA is treated to produce a carbon dioxide-enriched fluid, and wherein: the residual PSA is compressed to a pressure such that the partial pressure of the CO 2 contained ranges between about 15 and 40 bar; the residue is subjected to one or more condensation/separation steps with production of CO 2 -rich condensate(s) and a purge of noncondensable gas; the purge of noncondensable gas is preferably treated to produce a H 2 -rich permeate which is recycled to the PSA, and a residue which is recycled to syngas generation, Preferably, the condensate(s) are purified by cryogenic distillation to produce food grade CO 2 . The invention also concerns an installation for implementing the method.
摘要:
A method for producing a synthesis-gas product gas and a vapor stream includes catalytic steam reforming a hydrocarbonaceous feedstock in a steam reformer. The hot synthesis-gas product gas stream is cooled in a heat exchanger to form a cooled synthesis-gas product gas stream and a first partial vapor stream, which is supplied to the product vapor stream. The reforming furnace is operated so as to burn a burner feedstock in burners, cool a hot flue gas stream from the burners in a heat exchanger to form a cooled flue gas stream and a second partial vapor stream, and separate the cooled flue gas stream into a waste gas stream and a flue gas recirculation stream. The flow of the recirculated flue gas is increased with decreasing flow of the synthesis-gas product gas to obtain an approximately constant product vapor stream by increasing the second partial vapor stream.