Patent Yard Sign in
Expired Canadian patentCanada

Combined gas and steam turbine process

CA 1297683 C · Owner: Graf, Rolf · Inventors: Graf, Rolf; Plass, Ludolf; Reh, Lothar

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

In a process of carrying out a combined gas turbine and steam turbine process, the efficiency is increased in that the fuel gas is produced at a temperature from 900 to 1100°C in a circulating fluidized bed by a gasification of 70 to 95% by weight of the carbon contained in the carbonaceous material and is treated at a temperature from 850 to 950°C with suspended solids consisting of calcium hydroxide, calcium oxide and/or calcium carbonatecontaining solids to remove polluants. The main portion of said fuel gas is burnt to produce a gas which is used to operate the gas turbine and which contains at least 5% by volume oxygen and is at a temperature of at least 1000°C. The combustion of the …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 25, 1987
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297683 C
Classification (IPC)F01K23/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMarch 25, 1987Patent grantedMarch 24, 1992Term endedMarch 24, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.