(19)

(11)

EP 1 214 556 A1

(12)

(43) Date of publication: 19.06.2002 Bulletin 2002/25 (21) Application number: 00962726.6 (22) Date of filing: 25.09.2000

(51) International Patent Classification (IPC)7: F26B 11/14, B01J 2/10 (86) International application number: PCT/GB0003/674 (87) International publication number: WO 0123/820 (05.04.2001 Gazette 2001/14)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 25.09.1999 GB 9922698 (71) Applicant: J E Elsworth Limited King's Lynn,Norfolk PE34 4AS (GB)	(72) Inventor: GATHERCOLE, Andrew Patrick King's LynnNorfolk PE34 4BT (GB) (74) Representative: Hooper, John Peter Lindesay et al 5 Haslingfield Road Harlton,Cambridge CB3 7ER Harlton,Cambridge CB3 7ER (GB)