Process for steam reforming of hydrocarbons
AssigneeOsaka Gas Co., Ltd.
InventorsOsamu Okada, Susumu Takami, Tamotu Kotani, Satoshi Mori, Hiroki Fujita, Naoko Fukumura, Masamichi Ippommatsu
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Abstract
A process for steam reforming of hydrocarbons which comprises subjecting a hydrocarbon to steam reforming after desulfurizing the hydrocarbon to a sulfur content of 5 ppb or less. According to the process, a poisoning of steam reforming catalyst by sulfur can be prevented, and stable and economical operation can be attained for a long period.
Claims14
A process for desulfurizing and steam reforming organic sulfur-containing hydrocarbons comprising the steps of:
- (a) desulfurizing the organic sulfur-containing hydrocarbons to a sulfur content of 1 ppb or less by use of a desulfurization agent, and
- (b) reforming the resultant desulfurized hydrocarbons by use of steam, wherein the S/C value is in the range of 0.7-3.5.
A process for desulfurizing and steam reforming organic sulfur-containing hydrocarbons as claimed in claim or 7 or 8, wherein the hydrogen concentration in the hydrogen-containing inert gas is 0.5-4 vol. %.
A process for desulfurizing and steam reforming organic sulfur-containing hydrocarbons comprising the steps of:
- (a) desulfurizing the organic sulfur-containing hydrocarbons to a sulfur content of 1 ppb or less by use of a desulfurization agent;
- and
- (b) reforming the resultant desulfurized hydrocarbons by use of steam, wherein the desulfurization agent is a Copper-Zinc desulfurization agent obtained by hydrogen reduction of a copper oxide-zinc oxide mixture prepared by a co-precipitation process using a copper compound and a zinc compound or a Copper-Zinc-Aluminum desulfurization agent obtained by hydrogen reduction of a copper oxide-zinc oxide-aluminum oxide mixture prepared by a co-precipitation process using a copper compound, a zinc compound and an aluminum compound, said hydrogen reduction being conducted at about 150.degree.-300.degree. C. using an inert gas containing hydrogen in a concentration of 6 vol. % or less.
A process for desulfurizing and steam reforming organic sulfur-containing hydrocarbons employing a steam reforming catalyst and a reformer comprising:
- (a) controlling the sulfur content of the hydrocarbons to a sulfur content of 1 ppb or less by use of a desulfurization agent to reduce carbon deposition on the steam reforming catalyst and on the inner surfaces of the reformer;
- and
- (b) steam reforming the resultant desulfurized hydrocarbons, wherein the S/C value is in a range of 0.7-3.5.
Dependencies are inferred from the claim text.