Sulphur decontamination of conduits and vessels communicating wi

Details Sulphur decontamination of conduits and vessels communicating wi Sulphur decontamination of conduits and vessels communicating wi

1984-04-18

1986-09-09

Konopka, P. E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208140, 502 49, 502517, B01J 3814, B01J 2938, B01J 2396, C10G 3508

Patent

active

046109722

ABSTRACT:
A catalytic conversion system having sulfur-contaminated vessels and/or conduits upstream from the fixed catalytic bed is regenerated in situ by first flowing regenerating oxygen-containing gas having not more than 0.1 mol percent oxygen and at a temperature of above 850.degree. F., through the normal flow path of the vessels and/or conduits and then the fixed catalyst beds, wherein the sulfur contaminants are oxidized to sulfur dioxide which pass through the catalyst bed in the absence of sufficient oxygen to permit substantial conversion to harmful sulfur trioxide in the presence of catalyst containing a platinum group component on a porous inorganic oxide base, prior to removal of carbonaceous material from the catalyst.

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