Patent EP0046406A2 successfully refreshed from Google Patents.
EP0046406A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A fluidised bed furnace and power generating plant including such a furnace
Assignee: Fluidised Combustion Contractors Ltd
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Filing: 1981-08-18
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Granted: —
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Expires: 2001-08-18
Abstract
Abstract A recirculating fluidised bed furnace (Fig. 3) having a combustion chamber 4 operating at a fluidisation velocity of 10 metres per second delivering combustion products to a separating section 10 with the combustion gases flowing over boiler banks 30-36 in a pass 30 and the solids particles falling to a weir chamber 14. Heat is extracted from the particles in a compartmented heat transfer bed space 20 operating at a fluidisation velocity of 0.5 metres per second receiving the particles from the weir chamber 14 and discharging them to the base of the combustion chamber 4. The furnace is combined with a coal devolatiliser 60 discharging combustible gases through a burner 68 to a gas turbine 70 and char to the furnace combustion chamber 4. A compressor 72 coupled to the gas turbine 70 delivers air to an air heater 74 in the heat transfer bed space 20, which heated air is supplied to the devolatiliser 60 and the burner 68.
Inventors
- 👤 Peter Thomas Hilliard
- 👤 Derek Graham Pattle
- 👤 William Benjamin Mervyn Rowlands
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 13:03
CPC Classifications
F; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/061; F22; F22B; F22B31/00; F22B31/0007; F22B31/0084; F23; F23C; F23C10/00; F23C10/005; F23C10/02; F23C10/04; F23C10/08; F23C10/10; F27; F27B; F27B15/00; F23C2206/00; F23C2206/10; F23C2206/101; F23C2206/103
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
128 words
A fluidised bed furnace including, connected in a circulatory arrangement, a combustion chamber section, a separating section and a heat transfer bed space section, the combustion chamber section being arranged to be supplied with fuel particles and fluidising gases at a relatively high velocity and discharge combustion products to the separating section, the separating section being arranged to effect separation of solids particles from combustion . gases in the combustion products and discharge the solids particles to the heat transfer bed space section and the combustion gases from the furnace and the heat transfer bed space section being arranged to be supplied with fluidising gases at a relatively low velocity to effect flow of the solids particles around heat transfer surfaces and discharge to the combustion chamber section.
Claim 2
Dependent Claim
128 words
A fluidised bed furnace including, connected in a circulatory arrangement, a combustion chamber section, a separating section and a heat transfer bed space section, the combustion chamber section being arranged to be supplied with fuel particles and fluidising gases at a relatively high velocity and discharge combustion products to the separating section, the separating section being arranged to effect separation of solids particles from combustion . gases in the combustion products and discharge the solids particles to the heat transfer bed space section and the combustion gases from the furnace and the heat transfer bed space section being arranged to be supplied with fluidising gases at a relatively low velocity to effect flow of the solids particles around heat transfer surfaces and discharge to the combustion chamber section.
Claim 3
Dependent Claim
39 words
A fluidised bed furnace as claimed in Claim 1, wherein the heat transfer bed space section is divided into a plurality of parallel flow compartments each arranged to be controllably supplied with fluidising gases at a relatively low velocity.
Claim 4
Dependent Claim
54 words
A fluidised bed furnace as claimed in Claim 1 or Claim 2, the separating section is divided into a plurality of parallel flow paths, spaced around the combustion chamber section, respectively discharging solids particles to the heat transfer bed space section divided into corresponding parallel flow paths and combustion gases to a common offtake.
Claim 5
Dependent Claim
51 words
A fluidised bed furnace as claimed in any preceding claim, wherein the separating section is connected to the heat transfer bed space section through a weir chamber section provided with fluidising means adapted to effect transfer of the solids particles from the separating section to the heat transfer bed space section.
Claim 6
Dependent Claim
111 words
Power generation plant including the fluidised bed furnace as claimed in any preceding claim and a coal devolatilisation unit, the coal devolatilisation unit being connected to receive air from an air heater arranged to derive heat from the fluidised bed furnace and to discharge combustible gases to burner means connected to a gas turbine and the fluidised bed furnace being connected to receive char from the coal devolatilisation unit and exhaust gases from the gas turbine, and being provided with vapour generating and vapour heating surfaces in a heat transfer bed space of the fluidised bed furnace and in a combustion gas pass connected to discharge vapour to a vapour turbine.
Claim 7
Dependent Claim
27 words
Power generation plant as claimed in Claim 5, wherein the gas turbine is drivingly coupled to an air compressor connected to deliver air to the air heater.
Claim 8
Dependent Claim
28 words
Power generation plant as claimed in Claim 6, wherein the air compressor is connected to deliver fluidising air to the heat transfer bed of the fluidised bed furnace.
Claim 9
Dependent Claim
32 words
Power generating plant as claimed in Claim 6 or Claim 7, wherein the air compressor is connected to deliver tempering air to the connection between the burner means and the gas turbine.
Claim 10
Dependent Claim
30 words
Power generating plant as claimed in any one of claims 5 to 8, wherein the air heater is positioned in the heat transfer bed space of the fluidised bed furnace.
Claim 11
Dependent Claim
25 words
Power generating plant as claimed in any one of claims 5 to 9, wherein the burner is connected to receive air fran the air heater.
Claim 12
Dependent Claim
40 words
Power generating plant as claimed in any one of claims 5 to 10, wherein the gas turbine is connected to discharge exhaust gases as fluidising gases at relatively high velocity to the combustion chamber section of the fluidised bed furnace.
Claim 13
Dependent Claim
28 words
Power generating plant as claimed in any one of claims 5 to 11, wherein the gas turbine and the vapour turbine are each connected to an electrical generator.
References Cited (Backward Citations)
No citation records indexed.
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