Patents Assigned to Projektierung Chemische Verfahrenstechnik GmbH
  • Process for the production of xylose by enzymatic hydrolysis of xylan
    Patent number: 4275159
    Abstract: A process for the production of xylose by enzymatic hydrolysis of xylan wherein an aqueous solution containing xylan is treated with a carrier having bonded thereto xylanase enzyme and a carrier having bonded thereto .beta.-xylosidase and, optionally, uronic acid-splitting enzyme.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: June 23, 1981
    Assignee: Projektierung Chemische Verfahrenstechnik GmbH
    Inventors: Jurgen Puls, Michael Sinner, Hans-Hermann Dietrichs
  • Gasification of solid fuel
    Patent number: 4200438
    Abstract: Solid fuel is acted on by a gasifying medium in a fluidized bed W. The resulting gas enters a cyclone 20 having an outlet for solid particles connected to a gasification chamber 30 in which the particles are gasified by a separate stream of gasifying medium supplied by an injector 25.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: April 29, 1980
    Assignee: Projektierung Chemische Verfahrenstechnik GmbH
    Inventors: Walter Kaimann, Karl-Heinz Brachthauser
  • Process for the production of xylose by enzymatic hydrolysis of xylan
    Patent number: 4200692
    Abstract: A process for the production of xylose by enzymatic hydrolysis of xylan wherein an aqueous solution containing xylan is treated with a carrier having bonded thereto xylanase enzyme and a carrier having bonded thereto .beta.-xylosidase and, optionally, uronic acid-splitting enzyme.
    Type: Grant
    Filed: September 26, 1977
    Date of Patent: April 29, 1980
    Assignee: Projektierung Chemische Verfahrenstechnik GmbH
    Inventors: Jurgen Puls, Michael Sinner, Hans-Hermann Dietrichs
  • Apparatus for the gasification of carbonaceous material
    Patent number: 4165971
    Abstract: A process and apparatus for material processing, in particular for producing gas from carbon-containing material, are disclosed. Feed material comprising particulate material is continuously formed into briquettes and is simultaneously introduced into a processing compartment. The feed material is formed into briquettes by one or more pressure wheels forcing the material through channels in a die.
    Type: Grant
    Filed: May 17, 1977
    Date of Patent: August 28, 1979
    Assignee: Projektierung Chemische Verfahrenstechnik GmbH
    Inventors: Walter Kaimann, Karl-Heinz Brachthauser
  • Process for gas production from solid fuels
    Patent number: 4146369
    Abstract: A single reactor is used for gasifying solid fuels of a wide range of particle sizes without first comminuting the particles to a common size. The larger particles are gasified on a fixed bed, and the smaller ones are gasified on a fluidized bed. In the reactor, the fluidized bed is arranged above the fixed bed and gases rising from the fixed bed help to fluidize the fluidized bed. In addition, a dust gasification region can be provided above the fluidized bed.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: March 27, 1979
    Assignee: Projektierung Chemische Verfahrenstechnik GmbH
    Inventors: Wilhelm Flesch, Karl-Heinz Brachthauser, Walter Kaimann