EP2018501A1 - Method of cleaning the heating surfaces of a steam generator in planes and/or groups through the use of soot blowers - Google Patents
Method of cleaning the heating surfaces of a steam generator in planes and/or groups through the use of soot blowersInfo
- Publication number
- EP2018501A1 EP2018501A1 EP07724960A EP07724960A EP2018501A1 EP 2018501 A1 EP2018501 A1 EP 2018501A1 EP 07724960 A EP07724960 A EP 07724960A EP 07724960 A EP07724960 A EP 07724960A EP 2018501 A1 EP2018501 A1 EP 2018501A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- waiting time
- steam generator
- heating surface
- effectiveness
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
-
- 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
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
- F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
-
- 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
- F28G15/00—Details
-
- 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
- F28G15/00—Details
- F28G15/003—Control arrangements
Definitions
- the invention relates to a method for plane and / or group-wise cleaning of the heating surfaces of a steam generator by means of Rußbläserlick.
- the procedure is that the cleaning of certain heating surfaces either after specified intervals (for example, by the day) or by degree of contamination is made. It should be noted that the cleaning process is accompanied by increased wear of the heat exchanger tubes.
- Degree of contamination has a direct effect on the cleaning of other heating surfaces of the steam generator.
- the material removed with the steam blowers from the heating surfaces is transported in the flue gas flow and exerts an abrasive effect on other heating surfaces.
- Known cleaning methods do not consider these interdependencies between the heating surfaces or insufficiently.
- the invention is therefore based on the object to provide a method for cleaning the heating surfaces of a steam generator, with which a more effective cleaning of the heating surfaces of the steam generator is possible.
- the object is achieved by a method for planar and / or group-wise cleaning of the heating surfaces of a steam generator by means of soot blower insert, the method comprising the following steps:
- the cleaning of a heating surface takes place only when the expected cleaning result is optimal.
- the contamination state of adjacent heating surfaces of the steam generator is taken into account.
- the invention is based on the finding that the cleaning of a heating surface upstream of the flue gas stream also influences the caking and deposits on / on the downstream heating surfaces.
- the dissolved by the steam blower material is distributed in the flue gas flow and exerts an abrasive effect on the downstream heating surfaces, so it makes sense to clean off a preceding in the flue gas flow heating surface only when the downstream adjacent heating surface also requires cleaning. In this way, an optimal cleaning result can be achieved with a lower steam input.
- the minimum waiting time is preferably determined as a function of a minimally critical effectiveness of the heating surface. In this case, the minimum waiting time between two cleaning cycles is given by the fact that the heating surface to be cleaned has reached a contamination state in which a good cleaning result can be expected.
- the maximum waiting time between two cleaning cycles is the one that makes cleaning absolutely necessary due to the soiling state of the heating surfaces, ie when the maximum allowable effectiveness reduction of the heating surface is reached.
- the optimal waiting time is that which results due to the dependency of the effectiveness reduction, for example, a downstream adjacent heating surface.
- the initiation of a cleaning cycle of a heating surface is initiated when a downstream adjacent heating surface also requires cleaning and when the maximum waiting time of the heating surface for cleaning has not yet been reached. Due to this regulation, it is possible to operate a cleaning of the heating surfaces of the steam generator in the flue gas flow direction one after the other, so that an optimum cleaning result with simultaneously minimized wear is to be expected.
- Input variables both the state of soiling of the heating surface to be cleaned as well as the contamination state of the adjacent or downstream heating surfaces and the quality of the fuel used as input variables.
- the minimum waiting time is the period from a cleaning operation to the minimum critical efficiency reduction of the heating surface.
- the regulation of the cleaning cycles preferably takes place automatically
- the cleaning of the steam generator preferably takes place in such a way that a plurality of heating surfaces arranged one behind the other in the direction of the flue gas flow are cleaned in an order in the direction of the flue gas flow.
- the method according to the invention is explained below with reference to the attached graphical representation.
- the illustration shows the effectiveness of the relevant to be cleaned heating surface of the steam generator over the travel time of the steam generator.
- the heating surfaces of the steam generator have a base soil, which is applied in the graph as a continuous box. From this base contamination, the effectiveness of the heating surface decreases linearly over a period of time until a time t1 when the initiation of a cleaning operation would bring about a satisfactory result.
- E1 denotes the minimally critical effectiveness reduction of the heating surface to be cleaned
- E2 the maximum permissible effectiveness reduction of the relevant heating surface.
- the value E1 is set as a measure of the soiling state of the heating surface at which the start of the cleaning process can be expected to give a good result (minimum critical effectiveness).
- the distance from E1 to E2 is a function of the type of coal used.
- Coordinate E2-t2 is the time when the state of the heating surface itself makes cleaning indispensable.
- the time t3 is determined as a function of the state of an adjacent heating surface. Starting from t.sub.O, the soiling state of the heating surface steadily decreases; theoretically, cleaning would be possible at t.sub.1, but for reasons of the wear time, the cleaning process takes place at least for as long waited until the heating surface has reached the efficiency E1. However, the cleaning process is not initiated at this point, but rather is waited until the respective interdependent heating surface has also reached a state of soiling that would justify cleaning. If the relevant interdependent heating surface does not reach this cleaning state within the interval between t1 and t2, in any case at t2 the cleaning of the respective heating surfaces is initiated.
- the effectiveness of the heating surface is more conveniently determined by the heat / temperature balance between Bank of Congress and Bank of Congresserie.
- the regulation of the waiting time is, as already mentioned above, expediently carried out automatically by means of fuzzy logic as a function of a continuous analysis of the fuel used.
- sootblowers can be combined to blow groups and it can be an optimal cleaning of the steam generator from front to back perform in the flue gas flow direction.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006022625A DE102006022625B4 (en) | 2006-05-12 | 2006-05-12 | Process for level and / or group cleaning of the heating surfaces of a steam generator by means of soot blower insert |
PCT/EP2007/004036 WO2007131664A1 (en) | 2006-05-12 | 2007-05-08 | Method of cleaning the heating surfaces of a steam generator in planes and/or groups through the use of soot blowers |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2018501A1 true EP2018501A1 (en) | 2009-01-28 |
Family
ID=38358111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07724960A Withdrawn EP2018501A1 (en) | 2006-05-12 | 2007-05-08 | Method of cleaning the heating surfaces of a steam generator in planes and/or groups through the use of soot blowers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2018501A1 (en) |
DE (1) | DE102006022625B4 (en) |
WO (1) | WO2007131664A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015798B4 (en) | 2008-03-26 | 2015-06-18 | Meiko Maschinenbau Gmbh & Co. Kg | Heat recovery unit with self-cleaning |
DE102012014271B4 (en) * | 2012-07-19 | 2022-04-28 | Rwe Power Ag | Process for controlling cleaning devices on steam generators |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59195027A (en) * | 1983-04-15 | 1984-11-06 | Hitachi Ltd | Controller of soot blower |
US4454840A (en) * | 1983-07-14 | 1984-06-19 | The Babcock & Wilcox Company | Enhanced sootblowing system |
US5181482A (en) * | 1991-12-13 | 1993-01-26 | Stone & Webster Engineering Corp. | Sootblowing advisor and automation system |
JPH081295B2 (en) * | 1992-12-22 | 1996-01-10 | 川崎重工業株式会社 | Sootblower control device |
DE19502097A1 (en) * | 1995-01-24 | 1996-07-25 | Bergemann Gmbh | Method and device for operating a boiler system with sootblowers |
DE19502104A1 (en) * | 1995-01-24 | 1996-07-25 | Bergemann Gmbh | Method and device for controlling sootblowers |
FI117143B (en) * | 2000-11-30 | 2006-06-30 | Metso Automation Oy | Method and equipment for cleaning the boiler for soda |
ES2372160T3 (en) * | 2003-03-31 | 2012-01-16 | Foster Wheeler North America Corp. | PROCEDURE AND SYSTEM TO DETERMINE THE SOILING OF A THERMAL EXCHANGE SYSTEM. |
US6736089B1 (en) * | 2003-06-05 | 2004-05-18 | Neuco, Inc. | Method and system for sootblowing optimization |
-
2006
- 2006-05-12 DE DE102006022625A patent/DE102006022625B4/en not_active Expired - Fee Related
-
2007
- 2007-05-08 EP EP07724960A patent/EP2018501A1/en not_active Withdrawn
- 2007-05-08 WO PCT/EP2007/004036 patent/WO2007131664A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007131664A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007131664A1 (en) | 2007-11-22 |
DE102006022625B4 (en) | 2013-05-29 |
DE102006022625A1 (en) | 2007-11-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1060345B1 (en) | Method for operating a gas and steam turbine installation and the gas and steam turbine installation | |
DE102006022625B4 (en) | Process for level and / or group cleaning of the heating surfaces of a steam generator by means of soot blower insert | |
DE3204672A1 (en) | COMBINED GAS / STEAM TURBINE PROCESS | |
DE1546146A1 (en) | Method and device for treating the hot surfaces of incineration equipment | |
DE3112120C2 (en) | Fluidized bed combustion with an ash cooler | |
DD262063A5 (en) | METHOD AND DEVICE FOR HEATING STEAM MADE FROM REFRIGERATED WATER | |
DE3136480A1 (en) | METHOD AND ARRANGEMENT FOR REHEATING WET DESULFURED SMOKE GASES | |
DE102010061072B4 (en) | Cleaning a heat exchanger connected to an aggregate | |
DE60100604T2 (en) | Heat recovery device and method for minimizing pollution in a heat recovery device | |
DE3505157A1 (en) | METHOD FOR GENERATING ELECTRICAL ENERGY IN A COMBINED GAS AND STEAM TURBINE POWER PLANT WITH UPstream COAL GASIFICATION PLANT | |
DE19502104A1 (en) | Method and device for controlling sootblowers | |
DE19502097A1 (en) | Method and device for operating a boiler system with sootblowers | |
DE19630482A1 (en) | Heat exchanger | |
DE504222C (en) | Coke oven | |
DE741763C (en) | Water tube radiation boiler | |
AT207633B (en) | Gas turbine plant | |
DE119925C (en) | ||
DE931767C (en) | Method and device for cleaning gas ducts, pipes or the like, through which raw gas is passed | |
DE115862C (en) | ||
DE879341C (en) | Method and device for operating gas turbine systems with pressurized gasification of the fuels | |
DE3734008C2 (en) | ||
DE1035974B (en) | Method and system for preventing corrosion and deposit damage to parts of a system, in particular a gas turbine system | |
DE3313571C2 (en) | Corrosion-resistant multi-pass air preheater | |
DE19512850A1 (en) | Process for dedusting carbonization gas | |
DE1751577A1 (en) | Incinerator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20081201 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE BG CH CY CZ DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STEAG ENERGY SERVICES GMBH |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20140410 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20141021 |