US3978657A — Turbine system

Claim 1

Independent Claim 88 words

A turbine system comprising; a first turbine and means for heating operating gas for said first turbine including means for directly combustion heating said gas and means for indirectly combustion heating said gas means for deriving the fuels for both said heating means from a common fuel, said deriving means comprising means for separating from the common fuel, volatile constituents, leaving residual solid matter; means for combusting said residual solid matter; and a disc-type turbine operated by the products of combustion from said residual solid matter combustion means.

Claim 2

Dependent Claim 88 words

A turbine system comprising; a first turbine and means for heating operating gas for said first turbine including means for directly combustion heating said gas and means for indirectly combustion heating said gas means for deriving the fuels for both said heating means from a common fuel, said deriving means comprising means for separating from the common fuel, volatile constituents, leaving residual solid matter; means for combusting said residual solid matter; and a disc-type turbine operated by the products of combustion from said residual solid matter combustion means.

Claim 3

Dependent Claim 89 words

A solid fossil fuel operated turbine system comprising: at least one axial turbine; and operating air supply means to said turbine, including a combustion unit for direct heating, and heat exchange means for indirect heating of said air, said combustion unit being supplied with volatile constituents of said fossil fuel, said heat exchange means being supplied with heat through a circulating medium heated by combustion of the residual solid matter of said fossil fuel, and a disc-type turbine operated by the product of combustion of the residual solid matter.

Claim 4

Dependent Claim 89 words

A solid fossil fuel operated turbine system comprising: at least one axial turbine; and operating air supply means to said turbine, including a combustion unit for direct heating, and heat exchange means for indirect heating of said air, said combustion unit being supplied with volatile constituents of said fossil fuel, said heat exchange means being supplied with heat through a circulating medium heated by combustion of the residual solid matter of said fossil fuel, and a disc-type turbine operated by the product of combustion of the residual solid matter.

Claim 5

Dependent Claim 107 words

In a gas turbine system including at least one axial gas turbine and employing solid fossil fuel as the energy source: means for separating from said fuel volatile constituents, leaving residual solid matter; means for combusting said residual solid matter at elevated pressure; liquid metal heat exchange means for absorbing heat from said combustion; means for utilizing said absorbed heat to heat compressed air; means for combusting said volatile constituents in said heated compressed air to further raise its temperature; means for utilizing said raised temperature air to operate said turbine; and a disc-type turbine operated by the products of combustion from said solid matter combustion means.

Claim 6

Dependent Claim 107 words

In a gas turbine system including at least one axial gas turbine and employing solid fossil fuel as the energy source: means for separating from said fuel volatile constituents, leaving residual solid matter; means for combusting said residual solid matter at elevated pressure; liquid metal heat exchange means for absorbing heat from said combustion; means for utilizing said absorbed heat to heat compressed air; means for combusting said volatile constituents in said heated compressed air to further raise its temperature; means for utilizing said raised temperature air to operate said turbine; and a disc-type turbine operated by the products of combustion from said solid matter combustion means.

Claim 7

Dependent Claim 25 words

The system of claim 3, wherein said separating means comprises a reactor supplied with a mixture of said solid fossil fuel and alkaline earth compounds.

Claim 8

Dependent Claim 22 words

The system of claim 4, wherein volatile constituents are chemically treated by means of an alkaline compound bed traversed by said constituents.

Claim 9

Dependent Claim 23 words

The system of claim 3, wherein said solid fossil fuel is coal, and said residual solid matter is principally coke and inert material.

Claim 10

Dependent Claim 28 words

The system of claim 3, further comprising means for utilizing said products after passage through said disc-type turbine to preheat air supplied to said solid matter combustion means.

Claim 11

Dependent Claim 21 words

The system of claim 3, wherein said disc-type turbine includes means for extracting particulate matter forming part of said combustion products.

Claim 12

Dependent Claim 47 words

The system of claim 3, comprising at least two axial turbines, the exhaust gas from one being supplied to operate the next, and means for combusting said volatile constituents in the gas input to each of said turbines to heat said gas input to turbine operating temperature.

Claim 13

Dependent Claim 19 words

The system of claim 3, wherein the exhaust from said turbine is utilized to operate said fuel separating means.

Claim 14

Dependent Claim 22 words

The system of claim 3, wherein the exhaust from said solid matter combustion means is utilized to operate said fuel separating means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1979-09-07	1980-03-08	1980-09-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1983-09-07	1984-03-08	1984-09-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1987-09-07	1988-03-08	1988-09-07	$7700.00	Window Closed / Lapsed

Turbine system

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