EP0776707A3 - Method of cleaning aggregates from a power plant - Google Patents

Method of cleaning aggregates from a power plant Download PDF

Info

Publication number
EP0776707A3
EP0776707A3 EP96810785A EP96810785A EP0776707A3 EP 0776707 A3 EP0776707 A3 EP 0776707A3 EP 96810785 A EP96810785 A EP 96810785A EP 96810785 A EP96810785 A EP 96810785A EP 0776707 A3 EP0776707 A3 EP 0776707A3
Authority
EP
European Patent Office
Prior art keywords
power plant
cleaning
units
cleaning aggregates
aggregates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96810785A
Other languages
German (de)
French (fr)
Other versions
EP0776707B1 (en
EP0776707A2 (en
Inventor
Bruno Jordi
Ralf Kuske
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Schweiz AG
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0776707A2 publication Critical patent/EP0776707A2/en
Publication of EP0776707A3 publication Critical patent/EP0776707A3/en
Application granted granted Critical
Publication of EP0776707B1 publication Critical patent/EP0776707B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G5/00—Cleaning by distortion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0064—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes

Abstract

Bei einem Verfahren zum Reinigen von Aggregaten einer Kraftwerksanlage im eingebauten Zustand wird ein kalorisch aufbereitete und unter Druck stehende Medium, vorzugsweise Dampf, über mehrere Stunden eingeblasen. Anschliessend dieser ersten Einblasung wird eine Ruhepause eingeschaltet, während welcher die zu reinigenden Aggregate abkühlen können. Nach dieser Abkühlung wird das Verfahren durch mindestens ein weiteres Einblasen wieder aufgenommen, das jeweils zu einem Thermoschock führt, der den erwünschten Reinigungseffekt auslöst.

Figure 00000001
Figure 00000002
In a method for cleaning units of a power plant in the installed state, a calorically prepared and pressurized medium, preferably steam, is blown in over several hours. After this first injection, a rest period is switched on, during which the units to be cleaned can cool down. After this cooling, the process is resumed by blowing in at least one more time, each of which leads to a thermal shock, which triggers the desired cleaning effect.
Figure 00000001
Figure 00000002
EP96810785A 1995-12-02 1996-11-13 Method of cleaning aggregates from a power plant Expired - Lifetime EP0776707B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19545035A DE19545035A1 (en) 1995-12-02 1995-12-02 Process for cleaning units of a power plant
DE19545035 1995-12-02

Publications (3)

Publication Number Publication Date
EP0776707A2 EP0776707A2 (en) 1997-06-04
EP0776707A3 true EP0776707A3 (en) 1998-05-20
EP0776707B1 EP0776707B1 (en) 2000-12-20

Family

ID=7779049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810785A Expired - Lifetime EP0776707B1 (en) 1995-12-02 1996-11-13 Method of cleaning aggregates from a power plant

Country Status (4)

Country Link
EP (1) EP0776707B1 (en)
JP (1) JP3893178B2 (en)
CN (1) CN1131738C (en)
DE (2) DE19545035A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832904B (en) * 2005-12-16 2012-09-05 西门子公司 Measuring device for measuring the degree of purity of a medium

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0122856D0 (en) * 2001-09-22 2001-11-14 Imi Plc Liquid heating apparatus
CN101655335B (en) * 2008-08-19 2011-08-03 华北电力科学研究院有限责任公司 Device and method for thermal cleaning of direct air cooling system
CN103574585A (en) * 2012-07-26 2014-02-12 中国石油化工股份有限公司 Method for removing scale of waste heat boiler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141754A (en) * 1977-05-10 1979-02-27 Svenska Rotor Maskiner Aktiebolag Apparatus and method for cleaning the heat exchanging surfaces of the heat transfer plates of a rotary regenerative heat exchanger
US4377420A (en) * 1980-03-06 1983-03-22 United Technologies Corporation Removal of carbonaceous material from gas turbine cavities
US4581074A (en) * 1983-02-03 1986-04-08 Mankina Nadezhda N Method for cleaning internal heat transfer surfaces of boiler tubes
US4853014A (en) * 1987-07-27 1989-08-01 Naylor Industrial Services, Inc. Method and apparatus for cleaning conduits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2202465B2 (en) * 1972-01-17 1976-11-04 Raab Karcher GmbH, 4300 Essen PROCEDURE FOR GENERAL CLEANING OF THE FIRE-SIDE OF THE REAR HEATING SURFACES OF LARGE BOILERS
DE3317099A1 (en) * 1983-05-10 1984-11-15 Kraftwerk Union AG, 4330 Mülheim POSITIONING DEVICE FOR THE REMOTE CONTROLLED INSPECTION, CLEANING AND REPAIR OF THE PARALLEL TUBES OF A TUBE BUNDLE
DE4216383A1 (en) * 1992-05-18 1993-11-25 Siemens Ag Process for cleaning a closed container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141754A (en) * 1977-05-10 1979-02-27 Svenska Rotor Maskiner Aktiebolag Apparatus and method for cleaning the heat exchanging surfaces of the heat transfer plates of a rotary regenerative heat exchanger
US4377420A (en) * 1980-03-06 1983-03-22 United Technologies Corporation Removal of carbonaceous material from gas turbine cavities
US4581074A (en) * 1983-02-03 1986-04-08 Mankina Nadezhda N Method for cleaning internal heat transfer surfaces of boiler tubes
US4853014A (en) * 1987-07-27 1989-08-01 Naylor Industrial Services, Inc. Method and apparatus for cleaning conduits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832904B (en) * 2005-12-16 2012-09-05 西门子公司 Measuring device for measuring the degree of purity of a medium

Also Published As

Publication number Publication date
JP3893178B2 (en) 2007-03-14
DE59606231D1 (en) 2001-01-25
EP0776707B1 (en) 2000-12-20
EP0776707A2 (en) 1997-06-04
CN1131738C (en) 2003-12-24
CN1156241A (en) 1997-08-06
JPH09173999A (en) 1997-07-08
DE19545035A1 (en) 1997-06-05

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