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单词 reforming
释义
reforming

Chemistry
  • The conversion of straight-chain alkanes into branched-chain alkanes by cracking or by catalytic reaction. It is used in petroleum refining to produce hydrocarbons suitable for use in gasoline. Benzene is also manufactured from alkane hydrocarbons by catalytic reforming. Steam reforming is a process used to convert methane (from natural gas) into a mixture of carbon monoxide and hydrogen, which is used to synthesize organic chemicals. The reaction

    CH4+H2OCO+3H2

    occurs at about 900°C using a nickel catalyst.


Chemical Engineering
  • A process used to rearrange the molecular structure of hydrocarbons to alter their properties by cracking or by catalytic conversion. In petroleum refining, reforming is used to produce hydrocarbons for use in gasoline. Steam reforming is the conversion of methane from natural gas into hydrogen. It is used in ammonia production, which is produced from desulphurized and scrubbed natural gas that is mixed with steam and passed over nickel catalyst packed in tubes at a high temperature of around 900ºC.

    CH4+H2OCO+3H2CH4+2H2OCO2+4H2

    As both reactions are endothermic, heat is supplied to the reformer.


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