CN210035568U - Adjacent furnace heating starting system with air heater - Google Patents
Adjacent furnace heating starting system with air heater Download PDFInfo
- Publication number
- CN210035568U CN210035568U CN201920530451.4U CN201920530451U CN210035568U CN 210035568 U CN210035568 U CN 210035568U CN 201920530451 U CN201920530451 U CN 201920530451U CN 210035568 U CN210035568 U CN 210035568U
- Authority
- CN
- China
- Prior art keywords
- condensed water
- pipeline
- communicated
- air
- unit
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Air Supply (AREA)
Abstract
Description
技术领域technical field
本实用新型涉及余热利用技术领域，尤其涉及一种带暖风器的邻炉加热启动系统。The utility model relates to the technical field of waste heat utilization, in particular to a heating and starting system for an adjacent furnace with an air heater.
背景技术Background technique
近年来，随着国际油价的不断攀升和全球变暖趋势的加剧，节能减排已成为全社会共识，缩短机组的启动时间和优化机组的启动方式，也成为了投资方关注的重点。对于超超临界机组和直流锅炉设置锅炉启动系统，以保证机组低负荷运行时的安全，实现锅炉冷态、热态冲洗并节约工质和热量、并满足锅炉不同状态启动的需要。但由于该过程持续时间较长，需耗费大量燃油和燃煤。为了有效节约锅炉启动点火燃料消耗，目前国内很多工程已经考虑采用等离子点火或微油点火等点火方式，但即便如此，仍需要消耗一定的燃料。In recent years, with the continuous rise of international oil prices and the intensification of global warming, energy conservation and emission reduction have become the consensus of the whole society. Shortening the start-up time of units and optimizing the start-up method of units have also become the focus of investors. For ultra-supercritical units and once-through boilers, a boiler start-up system is set up to ensure the safety of the unit during low-load operation, to achieve boiler cold and hot flushing, saving working fluid and heat, and to meet the needs of boiler startup in different states. However, due to the long duration of this process, a large amount of fuel and coal is consumed. In order to effectively save fuel consumption for boiler startup ignition, many domestic projects have considered the use of plasma ignition or micro-oil ignition and other ignition methods, but even so, it still needs to consume a certain amount of fuel.
实用新型内容Utility model content
基于背景技术存在的技术问题，本实用新型提出了一种带暖风器的邻炉加热启动系统；Based on the technical problems existing in the background technology, the utility model proposes an adjacent furnace heating and starting system with an air heater;
本实用新型提出的一种带暖风器的邻炉加热启动系统，包括：第一机组和第二机组；The utility model proposes an adjacent furnace heating and starting system with an air heater, comprising: a first unit and a second unit;
第一机组包括第一低温省煤器、第一凝结水供暖风器、第一空预器、第一凝结水水箱，第一低温省煤器通过第一水路管道与第一凝结水水箱连通，第一低温省煤器通过第二水路管道与第一凝结水供暖风器连通，第一凝结水供暖风器通过第三水路管道与第一凝结水水箱连通，第一凝结水暖风器通过第一供风管道与第一空预器连通；The first unit includes a first low-temperature economizer, a first condensed water heater, a first air preheater, and a first condensed water tank, and the first low-temperature economizer is communicated with the first condensed water tank through a first water pipeline, The first low-temperature economizer is communicated with the first condensed water heater through the second waterway pipe, the first condensed water heater is communicated with the first condensed water tank through the third waterway pipeline, and the first condensed water heater is connected through the first condensed water heater. The air supply duct is communicated with the first air preheater;
第二机组包括第二低温省煤器、第二凝结水供暖风器、第二空预器、第二凝结水水箱，第二低温省煤器通过第四水路管道与第二凝结水水箱连通，第二低温省煤器通过第五水路管道与第二凝结水供暖风器连通，第二凝结水供暖风器通过第六水路管道与第二凝结水水箱连通，第二凝结水暖风器通过第二供风管道与第二空预器连通；The second unit includes a second low-temperature economizer, a second condensed water heater, a second air preheater, and a second condensed water tank, and the second low-temperature economizer communicates with the second condensed water tank through a fourth waterway pipeline, The second low-temperature economizer communicates with the second condensate air heater through the fifth waterway pipe, the second condensate air heater communicates with the second condensate water tank through the sixth waterway pipe, and the second condensate air heater passes through the second condensate water heater. The air supply duct is communicated with the second air preheater;
第二水路管道通过第七水路管道与第五水路管道连通，第三水路管道通过第八水路管道与第六水路管道连通。The second waterway pipeline communicates with the fifth waterway pipeline through the seventh waterway pipeline, and the third waterway pipeline communicates with the sixth waterway pipeline through the eighth waterway pipeline.
优选地，第七水路管道上设有第一调节阀，第八水路管道上设有第二调节阀。Preferably, the seventh water channel pipeline is provided with a first regulating valve, and the eighth water channel pipeline is provided with a second regulating valve.
优选地，第一水路管道上设有第一增压阀，第四水路管道上设有第二增压阀。Preferably, a first booster valve is provided on the first water channel pipe, and a second booster valve is provided on the fourth water channel pipeline.
本实用新型中，在A机组(第一机组或第二机组中某一机组)正常工作阶段，利用A机组经低温省煤器加热的高温闭式水加热暖风器，从而提高A机组的空预器入口一、二次风温，充分发挥低温省煤器的烟气余热利用的优势，在 B机组(第一机组或第二机组中另一机组)处于启动阶段时，通过A机组利用经低温省煤器加热的高温闭式水加热B机组的暖风器，既可缩短B机组点火至机组整体协调运行的时间，也可减少B机组启动时燃料的消耗，降低B机组启动成本，对于缓解水冷壁横向裂纹、升温速率过快有明显效果。In the utility model, in the normal working stage of the A unit (a unit in the first unit or the second unit), the high temperature closed water heater heated by the low temperature economizer of the A unit is used to heat the air heater, thereby improving the air-conditioning of the A unit. The primary and secondary air temperatures at the inlet of the preheater give full play to the advantage of the waste heat utilization of the flue gas of the low-temperature economizer. The high temperature closed water heater heated by the low temperature economizer can not only shorten the time from the ignition of the B unit to the overall coordinated operation of the unit, but also reduce the fuel consumption when the B unit starts, and reduce the start-up cost of the B unit. It has obvious effects on alleviating the transverse cracks of the water wall and the heating rate being too fast.
附图说明Description of drawings
图1为本实用新型提出的一种带暖风器的邻炉加热启动系统的结构示意图。FIG. 1 is a schematic structural diagram of a heating and starting system for an adjacent furnace with an air heater proposed by the utility model.
具体实施方式Detailed ways
图1中，1-第一机组，11-第一低温省煤器，12-第一凝结水供暖风器，13- 第一空预器，14-第一凝结水水箱，15-第一水路管道，16-第二水路管道，17- 第三水路管道，18-第一供风管道；2-第二机组，21-第二低温省煤器，22-第二凝结水供暖风器，23-第二空预器，24-第二凝结水水箱，25-第四水路管道，26-第五水路管道，27-第六水路管道，28-第二供风管道；3-第七水路管道，4-第八水路管道。In Figure 1, 1- the first unit, 11- the first low temperature economizer, 12- the first condensate heating fan, 13- the first air preheater, 14- the first condensate water tank, 15- the first water circuit Pipes, 16-second water pipeline, 17-third water pipeline, 18-first air supply pipeline; 2-second unit, 21-second low-temperature economizer, 22-second condensate heater, 23 - The second air preheater, 24- the second condensate water tank, 25- the fourth water pipeline, 26- the fifth water pipeline, 27- the sixth water pipeline, 28- the second air supply pipeline; 3- the seventh water pipeline , 4-8th waterway pipeline.
参照图1，本实用新型提出的一种带暖风器的邻炉加热启动系统，包括：第一机组和第二机组；Referring to Fig. 1, the utility model proposes a heating and starting system for an adjacent furnace with an air heater, including: a first unit and a second unit;
第一机组包括第一低温省煤器、第一凝结水供暖风器、第一空预器、第一凝结水水箱，第一低温省煤器通过第一水路管道与第一凝结水水箱连通，第一低温省煤器通过第二水路管道与第一凝结水供暖风器连通，第一凝结水供暖风器通过第三水路管道与第一凝结水水箱连通，第一凝结水暖风器通过第一供风管道与第一空预器连通；The first unit includes a first low-temperature economizer, a first condensed water heater, a first air preheater, and a first condensed water tank, and the first low-temperature economizer is communicated with the first condensed water tank through a first water pipeline, The first low-temperature economizer is communicated with the first condensed water heater through the second waterway pipe, the first condensed water heater is communicated with the first condensed water tank through the third waterway pipeline, and the first condensed water heater is connected through the first condensed water heater. The air supply duct is communicated with the first air preheater;
第二机组包括第二低温省煤器、第二凝结水供暖风器、第二空预器、第二凝结水水箱，第二低温省煤器通过第四水路管道与第二凝结水水箱连通，第二低温省煤器通过第五水路管道与第二凝结水供暖风器连通，第二凝结水供暖风器通过第六水路管道与第二凝结水水箱连通，第二凝结水暖风器通过第二供风管道与第二空预器连通；The second unit includes a second low-temperature economizer, a second condensed water heater, a second air preheater, and a second condensed water tank, and the second low-temperature economizer communicates with the second condensed water tank through a fourth waterway pipeline, The second low-temperature economizer communicates with the second condensate air heater through the fifth waterway pipe, the second condensate air heater communicates with the second condensate water tank through the sixth waterway pipe, and the second condensate air heater passes through the second condensate water heater. The air supply duct is communicated with the second air preheater;
第二水路管道通过第七水路管道与第五水路管道连通，第三水路管道通过第八水路管道与第六水路管道连通；第七水路管道上设有第一调节阀，第八水路管道上设有第二调节阀；第一水路管道上设有第一增压阀，第四水路管道上设有第二增压阀。The second waterway pipeline is connected with the fifth waterway pipeline through the seventh waterway pipeline, and the third waterway pipeline is connected with the sixth waterway pipeline through the eighth waterway pipeline; the seventh waterway pipeline is provided with a first regulating valve, and the eighth waterway pipeline is provided with a first regulating valve. There is a second regulating valve; a first pressure boosting valve is arranged on the first water channel pipeline, and a second pressure boosting valve is arranged on the fourth water channel pipeline.
在具体方案中，A机组(第一机组或第二机组中某一机组)汽机侧的凝结水水箱内的冷凝结水经A机组的低温省煤器的热烟气加热后，从低温省煤器流出的高温闭式水可流入A机组的凝结水供暖风器中，对进入凝结水供暖风器的冷风进行预加热后流回，进而提高A机组的空预器一、二次风温，通过余热利用降低A机组的空预器的能源消耗，从低温省煤器流出的高温闭式水的可进入处于启动阶段的B机组(第一机组或第二机组中令一机组)，借用A机组的高温闭式水对B机组的凝结水供暖风器进行加热，使其达到所需要的参数，该方式为邻炉加热，采用邻炉加热后，水冷壁的相变区大大提前，且热均匀性极为良好，降低了机组寿命损耗，减少了横向裂纹生成几率，启动速度大为提高，大大缩短了机组点火到整体协调运行的时间，节省了初始燃料的投用，启动时间缩短、启动流量降低，可避免了冷炉点火的未燃尽火焰直接冲刷对流受热面导致锅炉爆管现象的发生，避免了锅炉尾部可燃物的燃烧，显著提高了锅炉的启动安全性，第七水路管道上设有第一调节阀，第八水路管道上设有第二调节阀，通过开关调节阀，控制高温闭式水的流通。In the specific scheme, the condensed water in the condensed water tank on the steam turbine side of the A unit (the first unit or a certain unit of the second unit) is heated by the hot flue gas of the low-temperature economizer of the A unit, and the coal is saved from the low-temperature economizer. The high-temperature closed water flowing out of the air heater can flow into the condensate heating fan of unit A, and the cold air entering the condensing water heater can be preheated and then flow back, thereby increasing the primary and secondary air temperatures of the air preheater of unit A. The energy consumption of the air preheater of unit A is reduced by the utilization of waste heat, and the high-temperature closed water flowing from the low-temperature economizer can enter the unit B (one of the first unit or the second unit) that is in the start-up stage. The high-temperature closed water of the unit heats the condensed water heater of unit B to achieve the required parameters. This method is heating by the adjacent furnace. After heating by the adjacent furnace, the phase transition zone of the water wall is greatly advanced, and the heat The uniformity is extremely good, which reduces the life loss of the unit, reduces the probability of transverse crack generation, greatly improves the startup speed, greatly shortens the time from ignition of the unit to the overall coordinated operation, saves the initial fuel investment, shortens the startup time, and starts the flow rate. Reduced, it can avoid the occurrence of boiler tube burst caused by the unburned flame of the cold furnace ignition directly scouring the convection heating surface, avoid the combustion of combustibles at the tail of the boiler, and significantly improve the start-up safety of the boiler. There is a first regulating valve, and a second regulating valve is arranged on the eighth water pipeline, and the circulation of high temperature closed water is controlled by opening and closing the regulating valve.
以上所述，仅为本实用新型较佳的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，根据本实用新型的技术方案及其实用新型构思加以等同替换或改变，都应涵盖在本实用新型的保护范围之内。The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530451.4U CN210035568U (en) | 2019-04-18 | 2019-04-18 | Adjacent furnace heating starting system with air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530451.4U CN210035568U (en) | 2019-04-18 | 2019-04-18 | Adjacent furnace heating starting system with air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210035568U true CN210035568U (en) | 2020-02-07 |
Family
ID=69359987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920530451.4U Expired - Fee Related CN210035568U (en) | 2019-04-18 | 2019-04-18 | Adjacent furnace heating starting system with air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210035568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043918A (en) * | 2019-04-18 | 2019-07-23 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | A kind of adjacent stove heating activation system with steam air heater |
-
2019
- 2019-04-18 CN CN201920530451.4U patent/CN210035568U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043918A (en) * | 2019-04-18 | 2019-07-23 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | A kind of adjacent stove heating activation system with steam air heater |
| CN110043918B (en) * | 2019-04-18 | 2024-04-02 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | Adjacent furnace heating starting system with air heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100557306C (en) | Start-up method of once-through boiler with boiler water circulation pump adjacent to steam heating boiler | |
| CN100557304C (en) | Drain expansion and start-up method of once-through boiler adjacent steam heating boiler | |
| CN105402879A (en) | Condensation type gas water heater and constant-temperature control method | |
| CN202048562U (en) | Improved water supply system of electric-furnace exhaust heat boiler | |
| CN201837077U (en) | Novel energy-saving two-purpose wall-mounted gas boiler | |
| CN207831332U (en) | The micro- stove heat system quickly started for Subcritical Units | |
| CN202647714U (en) | Boiler economizer system | |
| CN205579720U (en) | Energy saving and emission reduction's gas hanging stove | |
| CN210035568U (en) | Adjacent furnace heating starting system with air heater | |
| CN201852197U (en) | Single heating wall-mounted furnace | |
| WO2023236325A1 (en) | Special solar vacuum water jacket heating furnace for oil field and crude oil heating method | |
| CN104990062B (en) | A kind of boiler energy-saving method and energy saver | |
| CN205048411U (en) | Gas boiler | |
| CN203744223U (en) | Critical unit heating system | |
| CN219243625U (en) | System for improving hot air temperature of coal boiler | |
| CN110043918A (en) | A kind of adjacent stove heating activation system with steam air heater | |
| CN204901735U (en) | Heat exchanger boiler waste heat utilization economizer | |
| CN209876968U (en) | Waste heat utilization system for starting boiler of gas turbine power plant | |
| CN211526399U (en) | Heat conducting oil boiler | |
| CN111156495B (en) | A modular heat exchange combined energy-saving system and method for steam boilers | |
| CN212252568U (en) | Subcritical parent pipe feedwater system boiler recirculation heat exchange start-up system | |
| CN211822305U (en) | Modular heat exchange combined energy-saving system of steam boiler | |
| CN204285424U (en) | A kind of air-cooled condensation steam boiler | |
| CN205065683U (en) | Auxiliary boiler sewer heat recovery system | |
| CN207062213U (en) | A kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |