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(11)

EP 1 017 956 A1

(12)

(43) Date of publication: 12.07.2000 Bulletin 2000/28 (21) Application number: 98932333.2 (22) Date of filing: 01.07.1998

(51) International Patent Classification (IPC)7: F23D 14/38, F23D 14/62, F23D 14/54, F23D 14/66 (86) International application number: PCT/GB9801/932 (87) International publication number: WO 9901/698 (14.01.1999 Gazette 1999/02)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.07.1997 GB 9713995 (71) Applicant: Drax Torches Limited London NW1 6AD (GB)	(72) Inventors: BALL, Graham, John RomseyHampshire SO15 7RU (GB) CONIBEER, Gavin, JohnStephenson Research Centre ShrivenhamWiltshire SN6 8LA (GB) THIRTLE, John, Martin London N19 3JS (GB) DOWNIE, Neil, Alexander Guilford GU4 7EB (GB) (74) Representative: Beresford, Keith Denis Lewis et al BERESFORD & Co.High Holborn2-5 Warwick Court London WC1R 5DJ London WC1R 5DJ (GB)