CN105953205A - Boiler steam temperature adjusting system and working method - Google Patents
Boiler steam temperature adjusting system and working method Download PDFInfo
- Publication number
- CN105953205A CN105953205A CN201610463753.5A CN201610463753A CN105953205A CN 105953205 A CN105953205 A CN 105953205A CN 201610463753 A CN201610463753 A CN 201610463753A CN 105953205 A CN105953205 A CN 105953205A
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- CN
- China
- Prior art keywords
- group
- heat exchanger
- water
- steam
- reheater
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
Abstract
The invention discloses a boiler steam temperature adjusting system and a working method. The system comprises a superheater set and a reheater set; superheated steam of the superheater set and the reheater set and part of steam on a reheated steam outlet are connected to a low-temperature water heat exchanger which is connected to an economizer in parallel; when passing through the superheater set, the superheated steam passes through a superheat desuperheater, and part of the superheated steam is also connected into the low-temperature water heat exchanger; when passing through the reheater set, reheated steam passes through a reheating desuperheater, and part of the reheated steam is also connected into the low-temperature water heat exchanger; part of feed water passes through the economizer, and part of the feed water enters the low-temperature water heat exchanger; and in the low-temperature water heat exchanger, heat exchange is performed on the superheated steam and the reheated steam, and finally the superheated steam and the reheated steam are converged with an outlet of the economizer to flow to a next-stage heater. The boiler steam temperature adjusting system can balance temperature between different heating faces, the heat exchange amount, of radiation, convection and the like, between the different heating faces can be adjusted, adaptability of coal types and loads is improved, and energy losses in the temperature adjusting process are reduced.
Description
[technical field]
The invention belongs to field of thermal power, be specifically related to a kind of boiler steam temperature regulation system and method for work.
[background technology]
The regulative mode of vapor (steam) temperature is broadly divided into two big classes: fume side regulates and steam tempering.During fume side regulation, typically adopt
By modes such as regulation burner pivot angle, flue gas recirculation, regulation gas baffles, the degree of regulation of vapor (steam) temperature is poor；Steam side is adjusted
Mainly using the mode of attemperator during joint, temperature regulation is the finest.General two ways uses simultaneously, using fume side regulation as
Thermoregulator major way carrys out coarse adjustment, using steam tempering as thin tuning, thus reaches the regulation of boiler export vapor (steam) temperature
Purpose.
But, being limited by boiler structure, the range of accommodation of fume side regulation is limited, especially when coal type change scope is bigger,
Regulation more difficulty.Along with the development of current energy-saving and emission-reduction situation, steam turbine reformation proposes significantly to change the demand of feed temperature,
Also requirements at the higher level are proposed in boiler steam temperature regulation.
And steam tempering is due to needs desuperheating water, unit recycling economy there is considerable influence.
[summary of the invention]
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of boiler steam temperature regulation system and method for work, can not only
Fine regulation vapor (steam) temperature, and can adapt to the various factors change impacts such as coal, load, feed temperature, and reduce because subtracting
The energy loss that warm water regulation temperature causes.
In order to achieve the above object, a kind of boiler steam temperature regulation system, including superheater group and reheater group, superheater group and
The some vapor of the superheated steam of reheater group and reheated steam outlet is connected to water at low temperature heat exchanger, and water at low temperature heat exchanger is parallel to province
Coal device.
It is provided with overheated desuperheating water between described superheater group and water at low temperature heat exchanger.
It is provided with reheating desuperheating water between described reheater group and water at low temperature heat exchanger.
Described superheater group accesses overheated vapour.
Described reheater group accesses reheating vapour.
Described superheater group, reheater group and economizer are placed in exhaust gases passes.
Described superheater group includes that multiple superheater, reheater group include multiple reheater.
A kind of method of work of boiler steam temperature regulation system, when overheated vapour is by superheater group, not only by overheated desuperheating water,
Also part accesses water at low temperature heat exchanger, and when reheating vapour is by reheater group, not only by reheating desuperheating water, also part accesses water at low temperature
Heat exchanger, a feedwater part is partly into water at low temperature heat exchanger by economizer, respectively to superheated steam in water at low temperature heat exchanger
Carrying out heat exchange with reheated steam, final and economizer exit assemble jamming is to subordinate's heater.
Described eventually flow to next equipment by the superheated steam after heat exchange.
Described eventually flow to next equipment by the reheated steam after heat exchange.
Compared with prior art, the water in water at low temperature heat exchanger is heated by the present invention by the steam in superheater group and reheater group
After, making own temperature reduce, thus reach to regulate the purpose of vapor (steam) temperature, the present invention can equalize the temperature between different heating surface,
The heat exchange amount between the different heating surface such as radiation, convection current can be regulated, improve coal, the adaptability of load, reduce temperature regulation process
In energy loss.
Further, the present invention is still provided with desuperheating water, it is possible to when, temperature not enough in heat exchange is too high, lower the temperature steam.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the present invention.
[detailed description of the invention]
The present invention will be further described below in conjunction with the accompanying drawings.
See Fig. 1, a kind of boiler steam temperature regulation system, including superheater group 1 and reheater group 2, superheater group 1 and again
The some vapor of the superheated steam of hot device group 2 and reheated steam outlet is connected to water at low temperature heat exchanger 3, and water at low temperature heat exchanger 3 is in parallel
Overheated desuperheating water 5, reheater group 2 and water at low temperature heat exchange it is provided with between economizer 4, superheater group 1 and water at low temperature heat exchanger 3
Being provided with reheating desuperheating water 6 between device 3, superheater group 1 accesses overheated vapour, and reheater group 2 accesses reheating vapour, superheater group 1,
Reheater group 2 and economizer 4 are placed in exhaust gases passes, and superheater group 1 includes that multiple superheater, reheater group 2 include multiple
Reheater.
The method of work of a kind of boiler steam temperature regulation system, when overheated vapour is by superheater group 1, not only by overheated attemperator
5, also part accesses water at low temperature heat exchanger 3, and when reheating vapour is by reheater group 2, not only by reheating attemperator 6, also part connects
Entering water at low temperature heat exchanger 3, a feedwater part, by economizer 4, is partly into water at low temperature heat exchanger 3, at water at low temperature heat exchanger 3
Middle respectively superheated steam and reheated steam being carried out heat exchange, final and economizer exit assemble jamming is to subordinate's heater；After heat exchange
Superheated steam eventually flow to next equipment；Next equipment is eventually flowed to by the reheated steam after heat exchange.
Claims (10)
1. a boiler steam temperature regulation system, it is characterised in that: include superheater group (1) and reheater group (2), overheated
The some vapor of device group (1) and the superheated steam of reheater group (2) and reheated steam outlet is connected to water at low temperature heat exchanger (3),
Water at low temperature heat exchanger (3) is parallel to economizer (4).
A kind of boiler steam temperature regulation system the most according to claim 1, it is characterised in that: described superheater group (1)
And it is provided with overheated desuperheating water (5) between water at low temperature heat exchanger (3).
A kind of boiler steam temperature regulation system the most according to claim 1, it is characterised in that: described reheater group (2)
And it is provided with reheating desuperheating water (6) between water at low temperature heat exchanger (3).
A kind of boiler steam temperature regulation system the most according to claim 1, it is characterised in that: described superheater group (1)
Access overheated vapour.
A kind of boiler steam temperature regulation system the most according to claim 1, it is characterised in that: described reheater group (2)
Access reheating vapour.
A kind of boiler steam temperature regulation system the most according to claim 1, it is characterised in that: described superheater group (1),
Reheater group (2) and economizer (4) are placed in exhaust gases passes.
A kind of boiler steam temperature regulation system the most according to claim 1, it is characterised in that: described superheater group (1)
Including multiple superheaters, reheater group (2) includes multiple reheater.
8. the method for work of a kind of boiler steam temperature regulation system described in claim 1, it is characterised in that: overheated vapour passes through
During superheater group (1), not only by overheated desuperheating water (5), also part accesses water at low temperature heat exchanger (3), and reheating vapour is by again
During hot device group (2), not only by reheating desuperheating water (6), also part accesses water at low temperature heat exchanger (3), and a feedwater part is passed through
Economizer (4) is partly into water at low temperature heat exchanger (3), respectively to reheated steam and overheated steaming in water at low temperature heat exchanger (3)
Vapour carries out heat exchange, and final and economizer exit assemble jamming is to subordinate's heater.
The method of work of a kind of boiler steam temperature the most according to claim 8 regulation system, it is characterised in that: described logical
Cross the superheated steam after heat exchange and eventually flow to next equipment.
The method of work of a kind of boiler steam temperature the most according to claim 8 regulation system, it is characterised in that: described logical
Cross the reheated steam after heat exchange and eventually flow to next equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610463753.5A CN105953205A (en) | 2016-06-22 | 2016-06-22 | Boiler steam temperature adjusting system and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610463753.5A CN105953205A (en) | 2016-06-22 | 2016-06-22 | Boiler steam temperature adjusting system and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105953205A true CN105953205A (en) | 2016-09-21 |
Family
ID=56903587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610463753.5A Pending CN105953205A (en) | 2016-06-22 | 2016-06-22 | Boiler steam temperature adjusting system and working method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105953205A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540540A (en) * | 2016-11-03 | 2017-03-29 | 广东电网有限责任公司电力科学研究院 | A kind of thermoregulating system and the method for improving SCR denitration device inlet flue gas temperature |
| CN106949456A (en) * | 2017-03-29 | 2017-07-14 | 江联重工集团股份有限公司 | Low capacity boiler reheated steam multitube bypasses thermoregulating system |
| CN107575854A (en) * | 2017-09-25 | 2018-01-12 | 华能莱芜发电有限公司 | A kind of double reheat power generation sets monitoring system |
| CN108558110A (en) * | 2018-06-22 | 2018-09-21 | 西安交通大学 | A kind of ultra supercritical CFB boiler desulfurization wastewater zero-discharge treatment system and method |
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| JPH0735301A (en) * | 1993-05-20 | 1995-02-07 | Ebara Corp | Compact-type energy saving boiler |
| CN2426069Y (en) * | 2000-05-09 | 2001-04-04 | 南京化工大学 | Heat pipe type waste heat boiler |
| CN102374524A (en) * | 2011-10-28 | 2012-03-14 | 西安热工研究院有限公司 | Secondary reheating system for power-station boiler |
| CN203364117U (en) * | 2013-04-26 | 2013-12-25 | 天壕节能科技股份有限公司 | Flash evaporation steam temperature regulation system |
| CN103672860A (en) * | 2013-12-26 | 2014-03-26 | 哈尔滨哈锅锅炉工程技术有限公司 | Combined desuperheating system for boiler |
| CN104832904A (en) * | 2015-05-13 | 2015-08-12 | 湖南中冶长天节能环保技术有限公司 | Gas boiler for heating saturated steam and superheated steam achieving method |
| CN205717148U (en) * | 2016-06-22 | 2016-11-23 | 西安热工研究院有限公司 | A kind of boiler steam temperature regulation system |
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2016
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735301A (en) * | 1993-05-20 | 1995-02-07 | Ebara Corp | Compact-type energy saving boiler |
| CN2426069Y (en) * | 2000-05-09 | 2001-04-04 | 南京化工大学 | Heat pipe type waste heat boiler |
| CN102374524A (en) * | 2011-10-28 | 2012-03-14 | 西安热工研究院有限公司 | Secondary reheating system for power-station boiler |
| CN203364117U (en) * | 2013-04-26 | 2013-12-25 | 天壕节能科技股份有限公司 | Flash evaporation steam temperature regulation system |
| CN103672860A (en) * | 2013-12-26 | 2014-03-26 | 哈尔滨哈锅锅炉工程技术有限公司 | Combined desuperheating system for boiler |
| CN104832904A (en) * | 2015-05-13 | 2015-08-12 | 湖南中冶长天节能环保技术有限公司 | Gas boiler for heating saturated steam and superheated steam achieving method |
| CN205717148U (en) * | 2016-06-22 | 2016-11-23 | 西安热工研究院有限公司 | A kind of boiler steam temperature regulation system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540540A (en) * | 2016-11-03 | 2017-03-29 | 广东电网有限责任公司电力科学研究院 | A kind of thermoregulating system and the method for improving SCR denitration device inlet flue gas temperature |
| CN106540540B (en) * | 2016-11-03 | 2019-07-05 | 广东电网有限责任公司电力科学研究院 | A kind of method of thermoregulating system and raising SCR denitration device inlet flue gas temperature |
| CN106949456A (en) * | 2017-03-29 | 2017-07-14 | 江联重工集团股份有限公司 | Low capacity boiler reheated steam multitube bypasses thermoregulating system |
| CN107575854A (en) * | 2017-09-25 | 2018-01-12 | 华能莱芜发电有限公司 | A kind of double reheat power generation sets monitoring system |
| CN107575854B (en) * | 2017-09-25 | 2019-05-10 | 华能莱芜发电有限公司 | A kind of double reheat power generation sets monitoring system |
| CN108558110A (en) * | 2018-06-22 | 2018-09-21 | 西安交通大学 | A kind of ultra supercritical CFB boiler desulfurization wastewater zero-discharge treatment system and method |
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Application publication date: 20160921 |
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