Patents Assigned to Voest-Alpine Industrienlagenbau Gesellschaft m.b.H.
  • Patent number: 5183753
    Abstract: Xylanase is prepared by cultivation of a fungus in a nutrient medium which contains corn cobs. The fungus is preferably Thermomyces lanuginosus DSM 5826 which produces an exo- and endo- cellulase-free xylanase.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: February 2, 1993
    Assignee: Voest-Alpine Industrienlagenbau Gesellschaft m.b.H.
    Inventors: Wolfgang Wizani, Hermann Esterbauer, Walter Steiner, Joseph Gomes
  • Patent number: 5039314
    Abstract: In this method for producing O2 and/or ozone for use in an oxygen consumer and/or an ozone consumer (2, 4), whereby residual oxygen is adsorbed from the consumers and, subsequently, scrubbed in a pressure-swing adsorption system (5); whereby the gas is, at least partially, recirculated to the oxygen consumer or, by preceding it with an ozonizer (3), to the ozone consumer (4); and whereby the amount of oxygen required for the operation of the consumers (2, 4) in addition to the recirculated oxygen is derived from an oxygen source (6, 7) separate from the pressure-swing adsorption system (5) designed for the scrubbing of the recirculated gas.In this connection, the preferred procedure is to feed the gas desorbed from the pressure-swing adsorption system (5) in the process of regeneration, at least partially, into the gas flow adsorbed from the consumers (2, 4) and to recirculate it via the pressure-swing adsorption system (5).
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: August 13, 1991
    Assignee: Voest-Alpine Industrienlagenbau Gesellschaft m.b.H.
    Inventors: Franz J. Lehner, Rainer Wawrina
  • Patent number: 4951928
    Abstract: A blowing lance to be used for the treatment of metallurgical melts includes a lance head having several expansion tuyeres directed to the bath level of the melt and penetrating a front plate of the lance head. They depart from at least one lance channel, which is peripherally surrounded by a supply channel and a return channel for a cooling medium. The supply channel is separated from the return channel by a flow deflection piece arranged above the front plate and penetrated by at least one connecting channel connecting the supply and return channels and provided for the cooling medium.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: August 28, 1990
    Assignee: Voest-Alpine Industrienlagenbau Gesellschaft m.b.H.
    Inventors: Manfred Eysn, Ernest Fuhrmann, Hans Grabner, Ernst Hollwarth, Hellmuth Smejkal