| 摘要 |
<p>In the catalytic production of hydrogen from hydrocarbon gases and steam, the catalyst is periodically reactivated by the passage of a gas comprising oxygen free from hydrocarbons. The oxygen may be diluted with inert gases such as nitrogen and carbon dioxide, and with water vapour. A mixture of air and steam containing 5-30 per cent of air is suitable. The invention is particularly applicable to the treatment of hydrocarbons containing unsaturated constituents, such as natural or refinery gas which has been freed from sulphur compounds. The temperature of reaction is 1200-2000 DEG F., and a nickel catalyst may be used. Preferably a number of reaction chambers are connected in parallel and separately reactivated in turn. Specification 364,419 is referred to.</p> |
