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    33.
    发明专利
    未知

    公开(公告)号：DE3047825C2

    公开(公告)日：1989-06-29

    申请号：DE3047825

    申请日：1980-12-18

    Applicant: HALDOR TOPSOEE A/S, LYNGBY, DK

    Inventor： PEDERSEN, KARSTEN, BIRKEROED, DK ,  ANDERSEN, KJELD JOERN, HILLEROED, DK ,  ROSTRUP-NIELSEN, JENS RICHARD, VIRUM, DK ,  JOERGENSEN, IB GREVE HJAELM, ALLEROED, DK

    IPC: C07C1/04 ,  B01J23/22 ,  C07B61/00 ,  C07C1/00 ,  C07C1/02 ,  C07C9/04 ,  C07C67/00 ,  C10K3/02 ,  C10K3/04

    Abstract: A gas rich in methane is prepared by the methanantion of a synthesis gas containing carbon oxides, hydrogen and optionally other gases in the presence of one or more gaseous sulphur compounds, normally in an amount of at least 10 ppm preferably at least 200 ppm by volume, calculated as H2S, with the aid of a catalyst comprising vanadium and/or molybdenum, which during the process is present as one or more sulphides, on a support comprising titanium dioxide. A high activity and a high selectivity for methane are obtained. A further advantage is that, by far, the main constituent of the higher hydrocarbons formed is ethane, which, by conversion into ethylene, is an important raw material in petrochemical synthesis. The selectivity for methane formation may be further improved by promoting the catalyst with compounds, especially sulphides of metals of groups IA, IIA and/or IIIB, particularly cerium. The invention also relates to the catalyst itself which may be prepared by impregnation or coprecipitation techniques.

    35.
    发明专利
    未知

    公开(公告)号：DE3332314C2

    公开(公告)日：1991-11-21

    申请号：DE3332314

    申请日：1983-09-07

    Applicant: HALDOR TOPSOEE A/S, LYNGBY, DK

    Inventor： JOERN, ERNST, LYNGBY, DK ,  RICHARD, JENS, VIRUM, DK

    IPC: C01B3/16 ,  C07C1/04

    Abstract: Hydrocarbons and especially as gasoline are prepared by the catalytic conversion in two subsequent reactors of a synthesis gas containing hydrogen and carbon oxides and having a mole ratio CO/H2 above 1 and when the conversion commences a mole ratio CO/CO2 of 5 to 20. In the first reactor, which is preferably a cooled reactor, the synthesis gas is converted into a methane-containing first intermediate and this at least partly further into a second intermediate containing dimethyl ether, at 5-100 bar and 150 DEG -400 DEG C., in the presence of catalyst(s), the effluent from this reactor is combined with a recycle stream containing low boiling components of the effluent from the second reactor, and then passed to the second reactor, which is adiabatic, where the conversion of the second intermediate is carried out at substantially the same pressure as in the first reactor and 150 DEG -600 DEG C. in the presence of a catalyst, preferably a zeolite catalyst, converting said intermediate partly into hydrocarbons, preferably hydrocarbons that are liquid at NTP conditions.

    37.
    发明专利
    未知

    公开(公告)号：DE195688T1

    公开(公告)日：1987-03-19

    申请号：DE86302121

    申请日：1986-03-21

    Applicant: HALDOR TOPSOEE A/S, LYNGBY, DK

    Inventor： STAHL, HENRIK OTTO, DK-2980 KOKKEDAL, DK ,  ROSTRUP-NIELSEN, JENS RICHARD, DK-2830 VIRUM, DK

    IPC: B01J8/04 ,  C01B3/38 ,  B01J8/02

    Abstract: The present invention provides a process for the steam reforming of hydrocarbons in a reforming reactor by the passage of a feed stream comprising steam and one or more hydrocarbons as process gas under steam reforming conditions and under external supply of heat through a given volume of steam reforming catalyst to form a product stream rich in hydrogen, comprising the following successive steps:… (a) passing the process gas through a first portion of the steam reforming catalyst constituting 25-75% thereof, heat needed for the endothermic reactions occurring in the process gas and for heating the process gas being supplied partly from a moderately hot flue gas as defined under (b) and partly from the product stream, and then… b) passing the process gas partly reformed in step (a) through the remaining portion of the steam reforming catalyst, the heat needed for the further endothermic reactions and heating of the process gas being supplied by a hot flue gas generated by combustion of a fluid fuel, the hot flue gas being thereby cooled to form the moderately hot flue gas employed in step (a). … A reactor for use in this process is also described.

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