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    1.
    发明专利
    未知

    公开(公告)号：DE1091558B

    公开(公告)日：1960-10-27

    申请号：DEB0031371

    申请日：1954-06-11

    Applicant: BASF AG

    Inventor： LEHRER DR ERWIN ,  BUSCHMANN DR KARL

    IPC: C07C2/78 ,  C07C11/24

    Abstract: In a process for the production of acetylene by incomplete combustion of hydrocarbons with oxygen in which the hydrocarbons and oxygen are separately preheated and the preheated gases are supplied to a mixing chamber, and the mixture then enters a reaction chamber in which a reaction with the formation of flame takes place and the reaction product is rapidly cooled, the preheated gases are mixed in a mixing chamber, the surface of the walls of which consist of a non-scaling metal, while maintaining the gradient of the gas speed at the walls above a minimum of 20, preferably 40, centimetres per second per centimetre, and in the same direction as the mean speed of the gas. The wall material may consist of alloys of iron with 5 to 25 per cent of chromium, 0.5 to 2.0 per cent of aluminium, and 0.4 to 3.0 per cent of silicon. In an example, 2000 cubic metres of natural gas and 1200 cubic metres of oxygen each preheated to 650 DEG C. were mixed in the apparatus of Specification 672,446, the surface of the mixing section being made from an iron alloy with 6.5 per cent chromium, 1.5 per cent of silicon, 0.5 per cent of aluminium and 0.15 per cent of carbon. The angle of aperture of the conical extension is so selected that the gas speed gradient is at least 150 centimetres per second per centimetre. The gaseous reaction products are cooled by the injection of water and contain, by volume, 8.8 per cent acetylene, 6 per cent methane, 0.2 per cent ethylene, 25 per cent carbon dioxide, 56.4 per cent hydrogen and 0.2 per cent of oxygen. An alternative alloy for the inner part of the mixing chamber consists of 23 per cent aluminium and 0.15 per cent of carbon, the remainder being iron.ALSO:Hydrogen and acetylene are obtained by the incomplete combustion of hydrocarbons with oxygen by a process in which the hydrocarbons and oxygen are separately preheated and supplied to a mixing chamber, the mixture then entering a reaction chamber in which a reaction with the formation of flame takes place and the reaction product is rapidly cooled, the preheated gases being mixed in a mixing chamber the walls of which consist of a non-scaling metal while maintaining the gradient of the gas speed at the walls above a minimum of 20, preferably 40 centimetres per second per centimetre, and in the same direction as the mean speed of the gas. The wall material may consist of alloys of iron with 5-25 per cent of chromium, 0.5 to 2.0 per cent of aluminium, and 0.4 to 3.0 per cent of silicon. In an example, 2,000 cubic metres of natural gas, and 1,200 cubic metres of oxygen each preheated to 650 DEG C. were mixed in the apparatus of Specification 672,446 the surface of the mixing section being made from an iron alloy with 6.5 per cent chromium, 1.5 per cent of silicon, 0.5 per cent of aluminium and 0.15 per cent of carbon. The angle of aperture of the conical extension is so selected that the gas speed gradient is at least 150 centimetres per second per centimetre. The gaseous reaction products are cooled by the injection of water and contain, by volume, 56.4 per cent hydrogen, 8.8 per cent acetylene, 6 per cent methane, 0.2 per cent ethylene, 25 per cent carbon dioxide and 0.2 per cent of oxygen.

    6.
    发明专利
    未知

    公开(公告)号：DE944035C

    公开(公告)日：1956-06-07

    申请号：DEB0006035

    申请日：1940-12-07

    Applicant: BASF AG

    Inventor： LEHRER DR ERWIN

    IPC: G01N27/74

    9.
    发明专利
    未知

    公开(公告)号：DE805815C

    公开(公告)日：1951-05-31

    申请号：DEP0050620

    申请日：1949-07-31

    Applicant: BASF AG

    Inventor： LEHRER DR ERWIN

    IPC: G01N27/74

    10.
    发明专利
    未知

    公开(公告)号：DE1264433B

    公开(公告)日：1968-03-28

    申请号：DEB0083046

    申请日：1965-07-30

    Applicant: BASF AG

    Inventor： LEHRER DR ERWIN ,  TELTSCHIK DR WALTER

    IPC: B01J19/14 ,  C07C11/24

    Abstract: 1,150,417. Acetylene. BADISCHE ANILIN- & SODA-FABRIK A.G. 29 July, 1966 [30 July, 1965], No. 34172/66. Heading C5E. Apparatus for the production of acetylene by partial oxidation of hydrocarbons with oxygen comprises means for separately preheating the hydrocarbon and the oxygen, means for mixing them and conducting them through a diffuser and a gas distributer 1 into a reaction chamber, and means for quenching the resulting gas mixture, and one or more perforated plates 3 provided on the diffuser side of the distributer to constrict the free cross-sectional area of each of the channels. The sum of the free crosssectional areas of holes in each of the perforated plates may be 30-90% of the free cross-sectional area in each of the channels. The thickness of the perforated plate 3 may be 0À5-10% of the lengths of the channels 2.

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