Patent EP0086504A2 successfully refreshed from Google Patents.
EP0086504A2
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EP
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A process for generating mechanical power
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1983-01-05
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Granted: —
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Expires: 2003-01-05
Abstract
Abstract Process for generating mechanical power by premixing a gaseous fuel with steam, burning the fuel/steam mixture and expanding the hot combustion gas in a turbine. Preferably the expanded gas is cooled to a temperature in the range of from 150°C to 250°C, and then used for heating water by indirect heat exchange to a temperature in the range of from 130°C to 200°C. The hot water may be evaporated into the gaseous fuel by contacting it therewith countercurrently. Steam is thus generated at a relatively low temperature by evaporating preheated water into the fuel gas stream to be burned in the combustion chamber of a gas turbine. In this way waste heat of a low temperature level can be put to good use.
Inventors
- 👤 Leonard Willem Ter Haar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:11
CPC Classifications
F; F01; F01K; F01K21/00; F01K21/04; F01K21/047
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A process for generating mechanical power by burning a gaseous fuel in the combustion chamber of a gas turbine and expanding the resulting hot combustion gas in the gas turbine, characterized in that the gaseous fuel is premixed with steam and the mixture thus formed is conducted into the combustion chamber.
Claim 2
Dependent Claim
51 words
A process for generating mechanical power by burning a gaseous fuel in the combustion chamber of a gas turbine and expanding the resulting hot combustion gas in the gas turbine, characterized in that the gaseous fuel is premixed with steam and the mixture thus formed is conducted into the combustion chamber.
Claim 3
Dependent Claim
23 words
A process as claimed in claim 1, characterized in that 0.1 to 1.0 kg of steam is added per kg of gaseous fuel.
Claim 4
Dependent Claim
57 words
A process as claimed in claim 1 or 2, characterized in that gaseous fuel having a temperature in the range from 40 to 100°C is contacted with water having a temperature in the range from 80 to 200°C, thus vaporizing at least part of the water at a pressure in the range from 10 to 30 bar.
Claim 5
Dependent Claim
55 words
A process as claimed in any one or more of the preceding claims, characterized in that the gas expanded in the turbine is cooled to a temperature in the range from 150 to 250°C and is then used to heat water to a temperature in the range from 130 to 200°C by indirect heat exchange.
Claim 6
Dependent Claim
31 words
A process as claimed in claims 3 and 4, characterized in that the water heated by means of the gas expanded in the turbines is vaporized countercurrently to the gaseous fuel.
Claim 7
Dependent Claim
49 words
A process as claimed in any one or more of the preceding claims, characterized in that the mixture of gaseous fuel and steam is heated to a temperature in the range from 250 to 450°C by indirect heat exchange before burning it in the combustion chamber of the turbine.
Claim 8
Dependent Claim
31 words
A process as claimed in any one or more of the preceding claims, characterized in that the gas turbine offgas is heated by burning therein a quantity of the gaseous fuel.
Claim 9
Dependent Claim
54 words
A process as claimed in claim 7, characterized in that the turbine offgas is heated to a temperature in the range from 50 to 75°C above the desired temperature of the steam to be generated in a steam boiler arranged downstream by indirect heat exchange between boiler feed water and the heated turbine offgas.
Claim 10
Dependent Claim
25 words
A process as claimed in claim 7 or 8, characterized in that 10 to 30X of the gaseous fuel is used for heating the offgas.
Claim 11
Dependent Claim
47 words
A process as claimed in any one or more of the preceding claims, characterized in that the gaseous fuel has been obtained by partial oxidation of a fossil fuel with air or oxygen or a mixture thereof at pressures in the range from 10 to 100 bar.
Claim 12
Dependent Claim
28 words
A process as claimed in claim 10, characterized in that the excess air of the gas turbine compressor is used for the partial oxidation of the fossil fuel.
Claim 13
Dependent Claim
21 words
A process as claimed in any one or more of the preceding claims, as hereinbefore described with reference to the Figure.
References Cited (Backward Citations)
No citation records indexed.
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