(19)
(11) EP 2 287 550 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.04.2014 Bulletin 2014/16

(43) Date of publication A2:
23.02.2011 Bulletin 2011/08

(21) Application number: 10007034.1

(22) Date of filing: 07.07.2010
(51) International Patent Classification (IPC): 
F28D 19/04(2006.01)
F28G 15/00(2006.01)
 F28G 1/16(2006.01)
F28G 9/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
BA ME RS

(30) Priority: 08.07.2009 US 499314

(71) Applicant: Breen Energy Solutions
Carnegie PA 15106 (US)

(72) Inventors:
  • Thomas, Scott
    Kernersville, NC 27284 (US)
  • Lockert, Charles, A.
    Chagrin Falls, Ohio 44022 (US)

(74) Representative: Fritzsche, Thomas 
Fritzsche Patent Naupliastrasse 110
81545 München
81545 München (DE)

   


(54) Method for online cleaning of air preheaters


(57) A method of cleaning air preheaters of the type having a rotor (14) which passes through a stream of flue gas and a stream of intake combustion air is disclosed. A soot blower (13,15) is operated in step-wise fashion to blow a soot blowing medium through passageways (22) in the rotor (14). The passageways (22) are arranged in concentric rings and move at a tangential velocity which depends on the speed of the rotor (14) and the location of the passageway (22) relative to the center of the rotor (14). In the present method the speed of the rotor (14) is adjusted in accordance with the position of the soot blower (13,15) so that every passageway (22) moves over the soot blower (13,15) at the same or substantially the same tangential velocity.







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Search report