CN1070037A - The method of operating of steam generator and equipment thereof - Google Patents
The method of operating of steam generator and equipment thereof Download PDFInfo
- Publication number
- CN1070037A CN1070037A CN92109197A CN92109197A CN1070037A CN 1070037 A CN1070037 A CN 1070037A CN 92109197 A CN92109197 A CN 92109197A CN 92109197 A CN92109197 A CN 92109197A CN 1070037 A CN1070037 A CN 1070037A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- air preheater
- regeneration air
- flue gas
- air
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
- F23K1/04—Heating fuel prior to delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention relates to a kind of steam generator method of operating and implement the equipment of this method, described steam generator is provided with the air preheater that connects after one, be subjected to the flue gas heating and one and contains NO
XFew coal powder burner, be particularly useful for burning through the device of pre-dried brown coal, take out the part of flue gas in the steam generator downstream and burning is provided, the flue gas of the steam generator of the air preheater that free in the future two regeneration air preheaters constitute imports the first regeneration air preheater that is arranged on the flue gas stream direction, after cooling, the second regeneration air preheater that connects after a part of air-flow of fume side sent into, cool off again and export, the remainder air-flow of flue gas is sent into combustion chambers burn, thereby the temperature of flue gas is descended, the economic benefit of operating efficiency and equipment improves.The pre-dried brown coal that contain high-sulfur in addition can be fully burned, and air preheater are not had corrosion-damaged.
Description
The present invention relates to a kind of equipment of method of operating and this method of enforcement of steam generator, described steam generator is provided with the air preheater that connects after one, be subjected to flue gas heating and one and contains the few coal powder burner of NOx, and device through pre-dried brown coal is particularly useful for burning.Simultaneously, take out the part of flue gas and burning is provided in the steam generator downstream.
The steam generating equipment of this class is by the prior art of this country known (seeing German patent application DE-P4124842.2).Yet, the shortcoming of this known steam generating equipment is for the radiation limit intensity that makes NOx reaches standard up to specification, must make by the exhaust gas volumn of steam generator circulation quite big, therefore, flue gas/the air ratio of air preheater is very low, and delivery temperature is also high.
Task of the present invention is to propose a kind of equipment of method of operating and this method of enforcement of steam generator.Adopt the method can overcome above-mentioned shortcoming, that is, make delivery temperature decline and the operating efficiency of steam generator is improved, thereby improved the economic benefit (efficient also can be improved when burning contains the brown coal of high-sulfur) of entire equipment.Task of the present invention solves by the characteristic of claim 1, and preferred embodiment of the present invention is stated in the dependent claims in detail.
According to the present invention, at first the first regenerative air is set and gives hot device at the flue gas flow path direction, this preheater is worked under the quite low situation of flue gas/air ratio, flue gas in the first regeneration air preheater, be cooled to substantially make the first regeneration preheater cold drawing temperature still on acid dew point, this point is particularly important to the fuel that contains high-sulfur.
Secondly, at the flue gas flow path direction second regenerative air preheater is set, its parts that impacted by flue gas can be made erosion-resisting, because this preheater is worked under high as far as possible flue gas/air ratio, therefore flue-gas temperature is further descended, as at DE-P4124,842.2 disclosed that an air preheater equipment only is set is such.
Because the raising of operating efficiency also is improved the economic benefit of equipment.In addition, can make contain high-sulfur, through pre-dried, do not cause corrosion-damaged brown coal fully to burn to air preheat equipment.
By means of specification and accompanying drawing will the present invention will be described in more detail.
Fig. 1, expression has the steam generator of the air preheater that connects behind direct coal powder burner and, and above-mentioned air preheater is made up of two regeneration air preheaters that connect after fume side.
Fig. 2, expression has the steam generator of the air preheater that connects behind an indirect coal powder burner and, and above-mentioned air preheater is made up of two regeneration air preheaters that connect after fume side.
Fig. 3, expression has the steam generator of the air preheater that connects behind a direct coal powder burner and, above-mentioned air preheater is made up of two regeneration air preheaters, in series is provided with an E-filter in fume side between two air preheaters.
Burner is provided with a plurality of coal pulverizers or injector.Yet Fig. 1,2 and 3 only uses a coal pulverizer or an injector for the ease of understanding, and represents with attached heater block sometimes.
In Fig. 1, enter fan mill 13 by pipeline 35 through the pre-dry brown coal (from a unshowned drying device) that contain high-sulfur.The flue gas of steam generator 22 enters regeneration air preheater 2 by pipeline 23, and through supercooling, the separated into two parts air-flow continues to carry.Part of smoke stream enters the pre-device 3 of regeneration air by pipeline 5, the parts that impacted by flue gas of this preheater 3 can be made corrosion resistant, and by further cooling, this part flue gas (for example enters the not shown back gatherer of establishing again, a positive filter, flue gas desulfur device etc.).Another part flue gas stream by be equipped with air blast 7 and with pipeline 8 or 9 or 10 pipelines that link to each other 6, lead to the suction side of nozzle 11 and fan mill 13 or coal burner 12 more respectively.
With the flue gas that is cooled off, enter into the coal burner 12 of the combustion chamber 21 that is positioned at steam generator from the coal dust of fan-type coal-grinding 13 by the pipeline 19 that is provided with stop gauge 20 as mounting medium from pipeline 9.
Fresh air enters regeneration air preheater 3 by air blast 29 and pipeline 28, heats and enters regeneration air preheater 2 by pipeline 4 and do further heating.After this, hot-air is by pipeline 33 and the pipeline 14 and 48 that is right after thereafter.Be provided with adjuster 18 and 36 on pipeline 14 and 48, Hot air quilt imports coal burner 12 or fan mill 13 thus.
In Fig. 2, will send in the injector 43 through pre-dried brown coal from circle feed bin 45.Also enter injector 43 together by pipeline 6 and 42 flue gases that import, the coal dust that is come out by injector 43 enters pulverized coal combustor 12 by the pipeline 44 that pipeline is provided with stop gauge 52.
In Fig. 3, fume side is provided with a positive filter 37 between regeneration air preheater 2 and 3.
Part air-flow through the flue gas of dedusting enters regeneration air preheater 3 and burner 12 respectively, and perhaps fan mill 13, and perhaps nozzle 11.Thereby the wearing and tearing of air blast 7, air preheater 3 and nozzle 11 dust that can avoid always advancing.
The principal character of method and apparatus of the present invention is summarized as follows:
A kind of method of operating of steam generator, described steam generator is provided with and connects after one, be subjected to the air preheater of flue gas heating and one to contain the few coal powder burner of NOx, in particular for the device of burning through the brown coal of super-dry, take out the part of flue gas gas simultaneously in the steam generator downstream and burning is provided, it is characterized in that, the flue gas of the steam generator (22) of the air preheater (1) that in the future free two regeneration air preheaters (2) and (3) constitute imports the first regeneration air preheater (2) that is arranged on the flue gas flow path direction, after cooling, the second regeneration air preheater (3) that connects after a part of air-flow of fume side sent into, further cooling and output again, the remainder air-flow of flue gas is sent into coal burner (12) and combustion chamber (21), and the parts that regeneration air preheater (3) is impacted by flue gas are made by corrosion-resistant material.The electrofilter (37) that will connect after will sending into from the flue gas of regeneration air preheater (2), the regeneration air preheater (3) of fume side is sent into an air-flow in dedusting then.Further cooling and output in the second traditional regeneration air preheater (3) that connects after sending into by the part of smoke of regeneration air preheater (2) outflow, and the remainder flue gas is sent into coal burner (12) and combustion chamber (21).
The equipment of described method is characterized in that,
A) in fume side, steam generator (22) is connected with the smoke inlet (24) of regeneration air preheater (2) by pipeline (23),
B) exhanst gas outlet (25) of regeneration air preheater (2) is connected with the gas approach (26) of regeneration air preheater (3) by pipeline (5),
C) pipeline (6) of pipeline (5) by being provided with air blast (7) is connected with burner (12) on being positioned at combustion chamber (21),
D) advancing air side, the air outlet slit (30) of regeneration air preheater (3) is connected with the air intlet (31) of regeneration air preheater (2) by pipeline (4),
E) air outlet slit (32) of regeneration air preheater (2) is connected with pulverized coal combustor (12) with (33) by the pipeline (14) that is provided with adjusting device (18),
F) parts that impacted by flue gas of regeneration air preheater (3) are made by corrosion-resistant material.
Pipeline (6) is connected with the air inlet side and the pulverized coal combustor (12) of flue gas nozzle (11) and fan mill (13) by pipeline (8) and (9) and (10) respectively.Respectively be provided with adjusting device (15) and (16) and (17) on pipeline (8) and (9) and (10).The air outlet slit (32) of regeneration air preheater (2) links to each other with coal burner (12) and pipeline (9) respectively by the pipeline (33) that links to each other with pipeline (14) and (48).Pipeline (14) and (48) are connected with adjusting device (18) and (36) respectively.Fan mill (13) is connected with coal burner (12) by the Guan Zhonglu (19) that is provided with a grade materials device (20).The exhanst gas outlet (25) of regeneration air preheater (2) is connected with the inlet (46) of electrofilter (37) by pipeline (38), and the outlet (47) of electrofilter (37) is connected with the inlet (26) of regeneration air preheater (3) by pipeline (40).Pipeline (40) is connected by pipeline (41) that is provided with air blast (7) and the burner that is positioned at combustion chamber (21) (12).The air outlet slit (30) of regeneration air preheater (3) is connected with the air intlet (31) of regeneration air preheater (2) by pipeline (39).Pipeline (6) is connected with the import and the coal burner (12) of nozzle (11) and injector (43) respectively by pipeline (8) and (42) and (10).Pipeline (42) is provided with adjusting device (51).The outlet of injector (43) is connected with the pipeline that is provided with a grade materials device (52) (44).The air outlet slit (32) of regeneration air preheater (2) is connected with coal burner (12) by the pipeline (49) that is provided with adjusting device (50).
Description of drawings
1. air preheater, 20. stop gauges,
2. regeneration air preheater, 21. combustion chambers,
3. regeneration air preheater, 22. steam generators,
4. pipeline, 23. pipelines,
5. pipeline, the gas approach of 24. regeneration air preheaters 2,
6. pipeline, the exhanst gas outlet of 25. regeneration air preheaters 2,
7. air blast, the gas approach of 26. regeneration air preheaters 3,
8. pipeline, the air intlet of 27. regeneration air preheaters 3,
9. pipeline, 28. pipelines,
10. pipeline, 29. fresh air blowers,
11. the flue gas nozzle, the air outlet slit of 30. regeneration air preheaters 3,
12. coal burner, the air intlet of 31. regeneration air preheaters 2,
13. fan mill, the air outlet slit of 32. regeneration air preheaters 2,
14. pipeline, 33. pipelines,
15. adjusting device, the exhanst gas outlet of 34. regeneration air preheaters 3,
16. adjusting device, 35. pipelines,
17. adjusting device, 36. adjusting devices,
18. adjusting device, the 37.E-filter,
19. pipeline, 38. pipelines,
39. pipeline,
40. pipeline,
41. pipeline,
42. pipeline,
43. injector,
44. pipeline,
45. the bulk tank of predrying brown coal,
46.E-filter inlet,
47.E-filter outlet,
48. pipeline,
49. pipeline,
50. adjusting device,
51. adjusting device,
52. stop gauge,
Claims (16)
1, a kind of method of operating of steam generator, described steam generator is provided with and connects after one, be subjected to the air preheater of flue gas heating and one to contain the few coal powder burner of NOx, in particular for the device of burning through the brown coal of super-dry, take out the part of flue gas simultaneously in the steam generator downstream and burning is provided, it is characterized in that, the flue gas of the steam generator (22) of the air preheater (1) that in the future free two regeneration air preheaters (2) and (3) constitute imports the first regeneration air preheater (2) that is arranged on the flue gas flow path direction, after cooling, the second regeneration air preheater (3) that connects after a part of air-flow of fume side sent into, further cooling and output again, the remainder air-flow of flue gas is sent into coal burner (12) and combustion chamber (21), and the parts that regeneration air preheater (3) is impacted by flue gas are made by corrosion-resistant material.
2, by the described method of claim 1, it is characterized in that, the electrofilter (37) that will connect after will sending into from the flue gas of regeneration air preheater (2), the regeneration air preheater (3) of fume side is sent into an air-flow in dedusting then.
3, by claim 1 and 2 described methods, it is characterized in that, further cooling and output in the second traditional regeneration air preheater (3) that connects after sending into by the part of smoke of regeneration air preheater (2) outflow, and the remainder flue gas is sent into coal burner (12) and combustion chamber (21).
4, implement preparation, it is characterized in that as method as described in the claim 1,2 and 3,
A) in fume side, steam generator (22) is connected with the smoke inlet (24) of regeneration air preheater (2) by pipeline (23),
B) exhanst gas outlet (25) of regeneration air preheater (2) is connected with the gas approach (26) of regeneration air preheater (3) by pipeline (5),
C) pipeline (6) of pipeline (5) by being provided with air blast (7) is connected with burner (12) on being positioned at combustion chamber (21),
D) advancing air side, the air outlet slit (30) of regeneration air preheater (3) is connected with the air intlet (31) of regeneration air preheater (2) by pipeline (4),
E) air outlet slit (32) of regeneration air preheater (2) is connected with pulverized coal combustor (12) with (33) by the pipeline (14) that is provided with adjusting device (18),
F) parts that impacted by flue gas of regeneration air preheater (3) are made by corrosion-resistant material.
By the described equipment of claim 4, it is characterized in that 5, pipeline (6) is connected with the air inlet side and the pulverized coal combustor (12) of flue gas nozzle (11) and fan mill (13) by pipeline (8) and (9) and (10) respectively.
6, by the described equipment of claim 5, it is characterized in that, respectively be provided with adjusting device (15) and (16) and (17) on pipeline (8) and (9) and (10).
7, press claims 4 described equipment, it is characterized in that, the air outlet slit (32) of regeneration air preheater (2) is connected with coal burner (12) and pipeline (9) respectively by the pipeline (33) that links to each other with pipeline (14) and (48).
By the described equipment of claim 7, it is characterized in that 8, pipeline (14) and (48) are connected with adjusting device (18) and (36) respectively.
9, by the described equipment of claim 4, it is characterized in that fan mill (13) is connected with coal burner (12) by the pipeline (19) that is provided with a grade materials device (20).
10, by the described equipment of claim 4, it is characterized in that, the exhanst gas outlet (25) of regeneration air preheater (2) is connected with the inlet (46) of electrofilter (37) by pipeline (38), and the outlet (47) of electrofilter (37) is connected with the inlet (26) of regeneration air preheater (3) by pipeline (40).
11, by claim 4 and 10 described equipment, it is characterized in that pipeline (40) is connected by pipeline (41) that is provided with air blast (7) and the burner that is positioned at combustion chamber (21) (12).
12, by claim 10 and 11 described equipment, it is characterized in that the air outlet slit (30) of regeneration air preheater (3) is connected with the air intlet (31) of regeneration air preheater (2) by pipeline (39).
By the described equipment of claim 5, it is characterized in that 13, pipeline (6) is connected with the import and the coal burner (12) of nozzle (11) and injector (43) respectively by pipeline (8) and (42) and (10).
14, by the described equipment of claim 13, it is characterized in that pipeline (42) is provided with adjusting device (51).
15, by claim 13 and 14 described equipment, it is characterized in that the outlet of injector (43) is connected with the pipeline that is provided with a grade materials device (52) (44).
16, by the described equipment of claim 13-16, it is characterized in that the air outlet slit (32) of regeneration air preheater (2) is connected with coal burner (12) by the pipeline (49) that is provided with adjusting device (50).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4127999A DE4127999C2 (en) | 1991-08-23 | 1991-08-23 | Method and system for carrying out the method for operating a steam generator |
| DE4127999.9 | 1991-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1070037A true CN1070037A (en) | 1993-03-17 |
Family
ID=6438959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92109197A Pending CN1070037A (en) | 1991-08-23 | 1992-07-22 | The method of operating of steam generator and equipment thereof |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1070037A (en) |
| DE (1) | DE4127999C2 (en) |
| GR (1) | GR1001317B (en) |
| PL (1) | PL295689A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791835A (en) * | 2015-04-17 | 2015-07-22 | 杭州兴环科技开发有限公司 | Method and system for improving air inlet temperature of boiler |
| CN105020736A (en) * | 2015-07-10 | 2015-11-04 | 清华大学 | Rotary air preheater with hierarchical reverse rotation |
| CN106855243A (en) * | 2015-12-08 | 2017-06-16 | 财团法人工业技术研究院 | integrated combustion device energy-saving system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006060472B4 (en) * | 2006-12-19 | 2015-07-16 | Alstom Technology Ltd. | Method for operating a steam power plant with a coal-fired steam generator and a steam power plant |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927627A (en) * | 1974-11-29 | 1975-12-23 | Foster Wheeler Energy Corp | Steam generating system and method utilizing exhaust gas recirculation |
| US4188993A (en) * | 1977-06-09 | 1980-02-19 | Thermal Transfer Division of Kleinewefers | Heat recovery systems |
| DE3013390C2 (en) * | 1980-04-05 | 1981-12-24 | Evt Energie- Und Verfahrenstechnik Gmbh, 7000 Stuttgart | Method for operating a steam generator system with mill firing |
| AT387645B (en) * | 1982-12-01 | 1989-02-27 | Steweag | METHOD AND DEVICE FOR REHEATING DESULFURED FUMES |
| GB2138555B (en) * | 1983-04-19 | 1986-07-23 | Davy Mckee Ag | Process for utilising heat removed on cooling a flue gas stream |
| DE3615125A1 (en) * | 1986-05-03 | 1987-11-05 | Lentjes Bwe Energietechnik Gmb | METHOD FOR OPERATING A STEAM GENERATOR, IN PARTICULAR A HEAT EXCHANGER |
-
1991
- 1991-08-23 DE DE4127999A patent/DE4127999C2/en not_active Expired - Fee Related
-
1992
- 1992-07-22 CN CN92109197A patent/CN1070037A/en active Pending
- 1992-08-14 GR GR920100359A patent/GR1001317B/en unknown
- 1992-08-21 PL PL29568992A patent/PL295689A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791835A (en) * | 2015-04-17 | 2015-07-22 | 杭州兴环科技开发有限公司 | Method and system for improving air inlet temperature of boiler |
| CN105020736A (en) * | 2015-07-10 | 2015-11-04 | 清华大学 | Rotary air preheater with hierarchical reverse rotation |
| CN106855243A (en) * | 2015-12-08 | 2017-06-16 | 财团法人工业技术研究院 | integrated combustion device energy-saving system |
| CN106855243B (en) * | 2015-12-08 | 2019-02-01 | 财团法人工业技术研究院 | Integrated combustion device energy-saving system |
| US10317070B2 (en) | 2015-12-08 | 2019-06-11 | Industrial Technology Research Institute | Integrated combustion device power saving system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4127999A1 (en) | 1993-02-25 |
| GR1001317B (en) | 1993-08-31 |
| PL295689A1 (en) | 1993-05-04 |
| DE4127999C2 (en) | 1994-08-04 |
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Legal Events
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |