Conditioning of flue gases

(19)

(11)

EP 0 395 363 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	18.09.1991 Bulletin 1991/38

(43)	Date of publication A2:
	31.10.1990 Bulletin 1990/44

(21)	Application number: 90304406.3

(22)	Date of filing: 24.04.1990

(51)	International Patent Classification (IPC)⁵: F23J 15/00

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30)

Priority:

26.04.1989 GB 8909548

(71)	Applicant: EMVERTEC LIMITED
	Harrow-on-the-Hill, Middlesex HA1 3JG (GB)

(72)	Inventor:
	Vernon, John Richard Harrow-on-the-Hill Middlesex HA1 3JG (GB)

(74)	Representative: Gillam, Francis Cyril et al
	SANDERSON & CO. European Patent Attorneys 34, East Stockwell Street Colchester Essex CO1 1ST Colchester Essex CO1 1ST (GB)

(56)

References cited: :

(54)	Conditioning of flue gases

(57) In a heat recovery installation for the flue gases for example from a boiler, the flue gas is reheated to above the dew point by a heat exchanger (13) following the cooling of the gas to below the dew point thereof and the extraction of at least some of the condensate. The reheating is controlled by determining the wet bulb temperature (16,17) of the flue gas before reheating and the dry bulb temperature (23) after reheating, the determined temperature being supplied to a differential temperature controller (24) which controls the setting of a flow valve (14), to regulate the flow of heated heat exchange medium through the heat exchanger.

Search report