CA2430078A1 - Method and apparatus for sootblowing recovery boiler - Google Patents
Method and apparatus for sootblowing recovery boiler Download PDFInfo
- Publication number
- CA2430078A1 CA2430078A1 CA002430078A CA2430078A CA2430078A1 CA 2430078 A1 CA2430078 A1 CA 2430078A1 CA 002430078 A CA002430078 A CA 002430078A CA 2430078 A CA2430078 A CA 2430078A CA 2430078 A1 CA2430078 A1 CA 2430078A1
- Authority
- CA
- Canada
- Prior art keywords
- sootblowing
- group
- sootblower
- interval
- time
- 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
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
Abstract
A method and apparatus for sootblowing a recovery boiler. Sootblowers of the recovery boiler are divided into sootblowing groups, and a sootblowing interval is determined for the sootblowers. A fouling index is produced for each sootblowing group of the recovery boiler, and relative frequency values are calculated.
Claims (12)
1. A method for sootblowing a recovery boiler, wherein sootblowers of the recovery boiler are divided into sootblowing groups, characterized by producing a fouling index for each sootblowing group of the recov-ery boiler, determining sootblower-specific sootblowing intervals, calculating relative frequency values of the sootblowing groups, selecting, for sootblowing, the sootblowing group and the soot-blower such that the sootblowing takes place substantially according to the relative frequency values and the sootblower-specific sootblowing intervals.
2. A method as claimed in claim 1, characterized by producing importance counters for each sootblowing group, the value of the importance counters being increased by a number of units indi-cated by the relative frequency value of the sootblowing group after each soot-blowing, and, in addition, if the sootblowing has taken place in a sootblowing group of its own, reducing the value of the importance counter by one unit, and selecting, for the sootblowing, the sootblower from the sootblowing group having the highest importance counter value.
3. A method as claimed in claim 1 or 2, characterized by selecting, for the sootblowing, the sootblower whose sootblowing time, i.e. the time passed from the start of its previous sootblowing, most ex ceeds the sootblowing interval determined for said sootblower or whose soot blowing time, i.e. the time passed from the start of its previous sootblowing, comes closest to the sootblowing interval determined for said sootblower.
4. A method as claimed in any one of the preceding claims, characterized by correcting the time between two successive starts of each soot-blower, using the fouling index (L) and the following formula:
N = F - L × K max, wherein N = sootblowing interval, F = starting interval and K max = magnitude of maximum correction.
N = F - L × K max, wherein N = sootblowing interval, F = starting interval and K max = magnitude of maximum correction.
5. A method as claimed in any one of the preceding claims, characterized by adjusting the starting interval of the sootblowers such that the soot-blowing interval of the most important sootblowers in the sootblowing group becomes shorter and the sootblowing interval of the less important sootblow-ers becomes longer while the total time used by the sootblowing group re-mains unchanged.
6. A method as claimed in any one of the preceding claims, characterized by determining the fouling index by fuzzy logic.
7. A method as claimed in any one of the preceding claims, characterized by determining for the sootblowers the free time left from all sootblow-ing procedures carried out by the sootblowers, dividing the determined free time as starting delays of the sootblow-ers between all sootblowing procedures.
8. A sootblowing apparatus for a recovery boiler, the apparatus comprising sootblowers arranged in sootblowing groups in the recovery boiler, and a control apparatus, characterized in that the control apparatus is arranged to determine sootblower-specific sootblowing intervals, produce a fouling index for each sootblowing group and calculate relative frequency values for the sootblowing groups, select, for sootblowing, the sootblowing group and the sootblower such that the sootblowing takes place substantially according to the relative frequency values and the sootblower-specific sootblowing intervals.
9. A sootblowing apparatus as claimed in claim 8, character-ized in that the control apparatus is arranged to produce importance counters for each sootblowing group, the value of the importance counters being increased by a number of units indicated by the relative frequency value of the sootblowing group after each sootblowing, and, in addition, if the sootblowing has taken place in a sootblowing group of its own, reduce the value of the importance counter by one unit, and to select, for the sootblowing, the sootblower from the sootblowing group having the highest importance counter value.
10. A sootblowing apparatus as claimed in claim 8 or 9, charac-terized in that the control apparatus is arranged to select, for the sootblowing, the sootblower whose sootblowing time, i.e. the time passed from the start of its previous sootblowing, most exceeds the sootblowing time determined for said sootblower or whose sootblowing time, i.e. the time passed from the start of its previous sootblowing, comes closest to the sootblowing interval determined for said sootblower.
11. An apparatus as claimed in any one of claims 8 to 10, char-acterized in that the control apparatus comprises fuzzy logic.
12. An apparatus as claimed in any one of claims 8 to 11, char-acterized in that the control apparatus is arranged to adjust the starting interval of the sootblowers such that the soot-blowing interval of the most important sootblowers in the sootblowing group becomes shorter and the sootblowing interval of the less important sootblow-ers becomes longer while the total time used by the sootblowing group re-mains unchanged.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20002633 | 2000-11-30 | ||
| FI20002633A FI117143B (en) | 2000-11-30 | 2000-11-30 | Method and equipment for cleaning the boiler for soda |
| PCT/FI2001/001042 WO2002044616A1 (en) | 2000-11-30 | 2001-11-29 | Method and apparatus for sootblowing recovery boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2430078A1 true CA2430078A1 (en) | 2002-06-06 |
| CA2430078C CA2430078C (en) | 2010-01-12 |
Family
ID=8559619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002430078A Expired - Lifetime CA2430078C (en) | 2000-11-30 | 2001-11-29 | Method and apparatus for sootblowing recovery boiler |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6758168B2 (en) |
| EP (1) | EP1350062B1 (en) |
| AT (1) | ATE343765T1 (en) |
| AU (1) | AU2002220768A1 (en) |
| BR (1) | BR0115625B1 (en) |
| CA (1) | CA2430078C (en) |
| DE (1) | DE60124139T2 (en) |
| ES (1) | ES2272576T3 (en) |
| FI (1) | FI117143B (en) |
| PT (1) | PT1350062E (en) |
| WO (1) | WO2002044616A1 (en) |
Families Citing this family (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7623932B2 (en) * | 1996-03-28 | 2009-11-24 | Fisher-Rosemount Systems, Inc. | Rule set for root cause diagnostics |
| US8290721B2 (en) | 1996-03-28 | 2012-10-16 | Rosemount Inc. | Flow measurement diagnostics |
| US7949495B2 (en) | 1996-03-28 | 2011-05-24 | Rosemount, Inc. | Process variable transmitter with diagnostics |
| US8044793B2 (en) | 2001-03-01 | 2011-10-25 | Fisher-Rosemount Systems, Inc. | Integrated device alerts in a process control system |
| US8073967B2 (en) | 2002-04-15 | 2011-12-06 | Fisher-Rosemount Systems, Inc. | Web services-based communications for use with process control systems |
| US7720727B2 (en) | 2001-03-01 | 2010-05-18 | Fisher-Rosemount Systems, Inc. | Economic calculations in process control system |
| US7395527B2 (en) | 2003-09-30 | 2008-07-01 | International Business Machines Corporation | Method and apparatus for counting instruction execution and data accesses |
| US8381037B2 (en) | 2003-10-09 | 2013-02-19 | International Business Machines Corporation | Method and system for autonomic execution path selection in an application |
| US7895382B2 (en) | 2004-01-14 | 2011-02-22 | International Business Machines Corporation | Method and apparatus for qualifying collection of performance monitoring events by types of interrupt when interrupt occurs |
| US7415705B2 (en) | 2004-01-14 | 2008-08-19 | International Business Machines Corporation | Autonomic method and apparatus for hardware assist for patching code |
| US7109446B1 (en) * | 2005-02-14 | 2006-09-19 | Emerson Process Management Power & Water Solutions, Inc. | Method and apparatus for improving steam temperature control |
| US8005647B2 (en) | 2005-04-08 | 2011-08-23 | Rosemount, Inc. | Method and apparatus for monitoring and performing corrective measures in a process plant using monitoring data with corrective measures data |
| US9201420B2 (en) | 2005-04-08 | 2015-12-01 | Rosemount, Inc. | Method and apparatus for performing a function in a process plant using monitoring data with criticality evaluation data |
| US7383790B2 (en) | 2005-06-06 | 2008-06-10 | Emerson Process Management Power & Water Solutions, Inc. | Method and apparatus for controlling soot blowing using statistical process control |
| US8140296B2 (en) * | 2005-06-06 | 2012-03-20 | Emerson Process Management Power & Water Solutions, Inc. | Method and apparatus for generalized performance evaluation of equipment using achievable performance derived from statistics and real-time data |
| US8112565B2 (en) | 2005-06-08 | 2012-02-07 | Fisher-Rosemount Systems, Inc. | Multi-protocol field device interface with automatic bus detection |
| US20070068225A1 (en) | 2005-09-29 | 2007-03-29 | Brown Gregory C | Leak detector for process valve |
| DE102006022625B4 (en) * | 2006-05-12 | 2013-05-29 | Rwe Power Ag | Process for level and / or group cleaning of the heating surfaces of a steam generator by means of soot blower insert |
| US7953501B2 (en) | 2006-09-25 | 2011-05-31 | Fisher-Rosemount Systems, Inc. | Industrial process control loop monitor |
| US8788070B2 (en) | 2006-09-26 | 2014-07-22 | Rosemount Inc. | Automatic field device service adviser |
| WO2008042290A2 (en) | 2006-09-29 | 2008-04-10 | Rosemount Inc. | Magnetic flowmeter with verification |
| GB2459594B (en) | 2007-03-12 | 2012-02-08 | Emerson Process Management | Method and apparatus for generalized performance evaluation of equipment using achievable performance derived from statistics and real-time data |
| US8898036B2 (en) | 2007-08-06 | 2014-11-25 | Rosemount Inc. | Process variable transmitter with acceleration sensor |
| US8301676B2 (en) | 2007-08-23 | 2012-10-30 | Fisher-Rosemount Systems, Inc. | Field device with capability of calculating digital filter coefficients |
| US7890197B2 (en) * | 2007-08-31 | 2011-02-15 | Emerson Process Management Power & Water Solutions, Inc. | Dual model approach for boiler section cleanliness calculation |
| US7702401B2 (en) | 2007-09-05 | 2010-04-20 | Fisher-Rosemount Systems, Inc. | System for preserving and displaying process control data associated with an abnormal situation |
| US8055479B2 (en) | 2007-10-10 | 2011-11-08 | Fisher-Rosemount Systems, Inc. | Simplified algorithm for abnormal situation prevention in load following applications including plugged line diagnostics in a dynamic process |
| ES2304118B1 (en) * | 2008-02-25 | 2009-07-29 | Sener Grupo De Ingenieria, S.A | PROCEDURE FOR GENERATING ENERGY THROUGH THERMAL CYCLES WITH HIGH PRESSURE VAPOR AND MODERATED TEMPERATURE. |
| US20100212609A1 (en) * | 2009-02-24 | 2010-08-26 | Adams Terry N | Systems and methods for controlling the operation of sootblowers |
| WO2011135081A2 (en) * | 2010-04-29 | 2011-11-03 | Siemens Aktiengesellschaft | Method and device for controlling the temperature of steam in a boiler |
| US9207670B2 (en) | 2011-03-21 | 2015-12-08 | Rosemount Inc. | Degrading sensor detection implemented within a transmitter |
| US9927788B2 (en) | 2011-05-19 | 2018-03-27 | Fisher-Rosemount Systems, Inc. | Software lockout coordination between a process control system and an asset management system |
| US9052240B2 (en) | 2012-06-29 | 2015-06-09 | Rosemount Inc. | Industrial process temperature transmitter with sensor stress diagnostics |
| US9602122B2 (en) | 2012-09-28 | 2017-03-21 | Rosemount Inc. | Process variable measurement noise diagnostic |
| US9927231B2 (en) * | 2014-07-25 | 2018-03-27 | Integrated Test & Measurement (ITM), LLC | System and methods for detecting, monitoring, and removing deposits on boiler heat exchanger surfaces using vibrational analysis |
| CN109603545B (en) * | 2018-12-28 | 2020-01-07 | 浙江大学 | SCR denitration method and device combining soot blowing |
| CN109882831B (en) * | 2019-03-21 | 2020-05-19 | 上海电力学院 | Method for preventing and controlling coking of heating surface of coal-fired power plant boiler based on six-temperature method |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2948013A (en) * | 1955-09-07 | 1960-08-09 | Blaw Knox Co | Program control for soot blowers |
| US4475482A (en) * | 1982-08-06 | 1984-10-09 | The Babcock & Wilcox Company | Sootblowing optimization |
| US4454840A (en) * | 1983-07-14 | 1984-06-19 | The Babcock & Wilcox Company | Enhanced sootblowing system |
| US4466383A (en) * | 1983-10-12 | 1984-08-21 | The Babcock & Wilcox Company | Boiler cleaning optimization with fouling rate identification |
| US4488516A (en) | 1983-11-18 | 1984-12-18 | Combustion Engineering, Inc. | Soot blower system |
| US4552098A (en) * | 1985-05-15 | 1985-11-12 | University Of Waterloo | Convection section ash monitoring |
| US4718376A (en) * | 1985-11-01 | 1988-01-12 | Weyerhaeuser Company | Boiler sootblowing control system |
| US4869209A (en) * | 1988-10-04 | 1989-09-26 | Engineering Controls, Inc. | Soot chaser |
| US4996951A (en) * | 1990-02-07 | 1991-03-05 | Westinghouse Electric Corp. | Method for soot blowing automation/optimization in boiler operation |
| US5181482A (en) * | 1991-12-13 | 1993-01-26 | Stone & Webster Engineering Corp. | Sootblowing advisor and automation system |
| US5359967A (en) * | 1993-06-15 | 1994-11-01 | Carter Hudson R | Combined thermal and fuel NOx control utilizing furnace cleanliness and stoichiometric burner combustion |
| JPH0875137A (en) | 1994-09-09 | 1996-03-19 | Babcock Hitachi Kk | Method and device for controlling soot blower by divided furnace model |
| DE19502104A1 (en) * | 1995-01-24 | 1996-07-25 | Bergemann Gmbh | Method and device for controlling sootblowers |
| JPH1194233A (en) | 1997-09-18 | 1999-04-09 | Mitsubishi Heavy Ind Ltd | Controller and control method for soot blower |
| JP3809981B2 (en) | 1997-11-18 | 2006-08-16 | バブコック日立株式会社 | Intelligent soot blower controller for coal fired boiler facilities |
| US6325025B1 (en) * | 1999-11-09 | 2001-12-04 | Applied Synergistics, Inc. | Sootblowing optimization system |
-
2000
- 2000-11-30 FI FI20002633A patent/FI117143B/en not_active IP Right Cessation
-
2001
- 2001-11-29 AU AU2002220768A patent/AU2002220768A1/en not_active Abandoned
- 2001-11-29 PT PT01998768T patent/PT1350062E/en unknown
- 2001-11-29 CA CA002430078A patent/CA2430078C/en not_active Expired - Lifetime
- 2001-11-29 DE DE60124139T patent/DE60124139T2/en not_active Expired - Lifetime
- 2001-11-29 AT AT01998768T patent/ATE343765T1/en active
- 2001-11-29 ES ES01998768T patent/ES2272576T3/en not_active Expired - Lifetime
- 2001-11-29 WO PCT/FI2001/001042 patent/WO2002044616A1/en active IP Right Grant
- 2001-11-29 EP EP01998768A patent/EP1350062B1/en not_active Expired - Lifetime
- 2001-11-29 BR BRPI0115625-0A patent/BR0115625B1/en not_active IP Right Cessation
-
2003
- 2003-05-30 US US10/449,277 patent/US6758168B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FI20002633A0 (en) | 2000-11-30 |
| FI20002633A (en) | 2002-05-31 |
| ES2272576T3 (en) | 2007-05-01 |
| US6758168B2 (en) | 2004-07-06 |
| US20030205210A1 (en) | 2003-11-06 |
| PT1350062E (en) | 2007-01-31 |
| DE60124139D1 (en) | 2006-12-07 |
| CA2430078C (en) | 2010-01-12 |
| ATE343765T1 (en) | 2006-11-15 |
| BR0115625B1 (en) | 2010-07-27 |
| EP1350062B1 (en) | 2006-10-25 |
| FI117143B (en) | 2006-06-30 |
| AU2002220768A1 (en) | 2002-06-11 |
| WO2002044616A1 (en) | 2002-06-06 |
| BR0115625A (en) | 2003-08-26 |
| DE60124139T2 (en) | 2007-09-06 |
| EP1350062A1 (en) | 2003-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2430078A1 (en) | Method and apparatus for sootblowing recovery boiler | |
| US6325025B1 (en) | Sootblowing optimization system | |
| JP4136662B2 (en) | Method for descaling a strip | |
| EP2564118B1 (en) | Method and device for controlling the temperature of steam in a boiler | |
| PL202720B1 (en) | Steam super heater comprising unround pipes | |
| CN109654518B (en) | Soot blowing optimization method for heating surface of coal-fired power plant boiler | |
| US9360212B2 (en) | Controlling sootblowers according to rules, rankings of sootblowers, and fuzzy functions that evaluates fuzzy functions only related to temperature and pressure | |
| Kolahan et al. | An adaptive TS approach to JIT sequencing with variable processing times and sequence-dependent setups | |
| JP2010517787A (en) | Thermomechanically controlled rolling method and apparatus for metal plates and strips | |
| CN109407637A (en) | Control method based on Power Plant DCS System gas heat exchanger precise positioning purging | |
| JP3390347B2 (en) | Plate rolling method | |
| SU1526856A1 (en) | Method of sizing u-shapes | |
| JPH0985318A (en) | Prevention of nose bending of hot rolling stock | |
| JP2826792B2 (en) | Rolling method for steel plate with protrusions with excellent protrusion height accuracy | |
| JPS6217512A (en) | Control method for operation of soot blower | |
| JP2001150028A (en) | Straightening method with roller leveler with which excellent straightness in rail can be achieved and straightening machine | |
| SU1659141A1 (en) | Method of hot rolling of strip in wide-strip mill | |
| SU910244A1 (en) | Method of shaping rolling mill rolls | |
| JP2849239B2 (en) | Tube rolling method | |
| JPS6376709A (en) | Width control method for tandem rolling mill | |
| JPH0810814A (en) | Method for calculating contact region between rolls of rolling mill | |
| JPH01266416A (en) | Control method for operation of soot blowers in boiler | |
| JPH07164029A (en) | Flying hot rolled plate thickness changing control method | |
| SU1333434A1 (en) | Clamping head for straightening/bending machine | |
| JPH01180702A (en) | Continuous rolling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20211129 |