Power plant with pressurized-gas generator

Patent · Tue Apr 29 00:00:00 EDT 1980

OSTI ID:5978332

Pfenninger, H

A power plant essentially comprises a thermal prime mover, a pressurized-gas generator for generating hot producer gas from coal, the producer gas following separation out of dust and sulphur content being utilized as fuel for the power plant. Included is a pressure-charging group consisting of coupled compressor and gas turbine units, the compressor serving to compress air and deliver it to the pressurized gas generator, and the gas turbine being driven by the hot pressurized and unburned producer gas. Two dry-state dust separators for dust entrained in the producer gas are arranged in series in the flow path of the producer gas after leaving the pressurized-gas generator. The first dust separator is a cyclone type which functions to remove coarser particles of the dust and the second separator which is structurally integrated into the gas turbine to remove any dust particles still remaining in the producer gas is constituted by a volute casing located at the inlet end of the turbine which serves as a replacement for the normally used row of guide vanes and which functions to centrifuge out the dust into an annular duct through an entrance gap thereto formed in the outer wall of the turbine ahead of the first row of rotor blading thus to avoid any erosive action on the latter. A second similar annular duct for receiving centrifuged out dust particles can also be provided in the gas flow path immediately after the first row of rotor blading. The hot producer gas following expansion in passing through the turbine accompanied by a drop in temperature but without further cooling is then passed through a dry state porous mass which chemically binds and removes the sulphur content prior to delivery to a combustion chamber component wherein the prime mover is a further gas turbine driving a load such as electrical generator or to a boiler wherein the prime mover is a steam turbine.

• Assignee: BBC Brown Boveri and Co Ltd (Switzerland)
• Patent Number(s): US 4199933
• OSTI ID: 5978332
• Resource Relation: Patent Priority Date: Priority date 22 Dec 1973, Switzerland
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
FOSSIL-FUEL POWER PLANTS
DESIGN
COAL
COMPRESSED GASES
DESULFURIZATION
DUSTS
GAS GENERATORS
GAS TURBINE POWER PLANTS
PRESSURIZING
PRODUCER GAS
REMOVAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
LOW BTU GAS
MATERIALS
POWER PLANTS
THERMAL POWER PLANTS
200104* - Fossil-Fueled Power Plants- Components