Abstract:
A catalyst composition comprising a cobalt compound, a molybdenum compound, and a SAPO molecular sieve is used to hydrodesulfurize a hydrocarbon feed containing organic sulfur compounds.
Abstract:
The present invention relates to a novel type of hydrogenation reactor, to methods of hydrogenation implemented therein, and more generally to the use of such a reactor. A reactor of the invention has a double wall; said double wall comprising an outer wall (10) suitable for withstanding mechanical loads and an inner wall (20) defining the reaction volume (30) within which a reaction medium is caused to react, said inner wall (20) withstanding said reaction medium and protecting said outer wall (10) from coming into contact therewith. In characteristic manner, a space (50) is provided between said outer and inner walls (10, 20) for controlled recombination of the atomic hydrogen that is caused to diffuse through said inner wall (20); said space (50) not containing any means suitable for enabling said atomic hydrogen to diffuse from said inner wall to said outer wall; and the structure of said reactor including means to balance pressures on either side of said inner wall (20) and to enable the hydrogen that has reached said space (50) to circulate and to be exhausted to the outside while said reactor is in use.
Abstract:
Processes and apparatus for providing improved contaminant removal and hydrogen reuse in reactors, particularly in refineries and petrochemical plants. The improved contaminant removal is achieved by selective purging, by passing gases in the reactor recycle loop across membranes selective in favor of the contaminant over hydrogen.