CN110043918B - Adjacent furnace heating starting system with air heater - Google Patents
Adjacent furnace heating starting system with air heater Download PDFInfo
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- CN110043918B CN110043918B CN201910314430.3A CN201910314430A CN110043918B CN 110043918 B CN110043918 B CN 110043918B CN 201910314430 A CN201910314430 A CN 201910314430A CN 110043918 B CN110043918 B CN 110043918B
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
本发明公开了一种带暖风器的邻炉加热启动系统，包括：两个机组，机组包括低温省煤器、凝结水供暖风器、空预器、凝结水水箱，低温省煤器通过第一水路管道与凝结水水箱连通，低温省煤器通过第二水路管道与凝结水供暖风器连通，凝结水供暖风器通过第三水路管道与凝结水水箱连通，凝结水暖风器通过供风管道与空预器连通，两个机组的第一水路管道通过第七水路管道连通，两个机组的第三水路管道通过第八水路管道连通，A机组工作时，利用低温省煤器加热的高温闭式水加热暖风器，从而提高A机组空预器入口一、二次风温，节约空预器的加热成本，在B机组启动时，通过A机组的高温闭式水加热B机组的暖风器，降低B机组启动成本。
The invention discloses an adjacent furnace heating start-up system with a heater, comprising: two units, the units comprising a low-temperature economizer, a condensate water supply heater, an air preheater, and a condensate water tank, the low-temperature economizer is connected to the condensate water tank through a first water pipeline, the low-temperature economizer is connected to the condensate water supply heater through a second water pipeline, the condensate water supply heater is connected to the condensate water tank through a third water pipeline, the condensate water supply heater is connected to the air preheater through an air supply pipeline, the first water pipelines of the two units are connected through a seventh water pipeline, the third water pipelines of the two units are connected through an eighth water pipeline, when unit A is working, the high-temperature closed water heated by the low-temperature economizer is used to heat the heater, thereby increasing the primary and secondary air temperatures at the inlet of the air preheater of unit A, saving the heating cost of the air preheater, and when unit B is started, the heater of unit B is heated by the high-temperature closed water of unit A, thereby reducing the start-up cost of unit B.
Description
Technical Field
The invention relates to the technical field of waste heat utilization, in particular to an adjacent furnace heating starting system with a heater.
Background
In recent years, along with the continuous rising of international oil prices and the aggravation of global warming trend, energy conservation and emission reduction become the public consensus, and the starting time of a unit and the starting mode of the unit are shortened and optimized, so that the method also becomes the focus of attention of investors. The boiler starting system is arranged for the ultra-supercritical unit and the once-through boiler so as to ensure the safety of the unit during low-load operation, realize the cold state and hot state flushing of the boiler, save working medium and heat and meet the requirements of starting the boiler in different states. However, the process is long in duration, and a large amount of fuel oil and fire coal are consumed. In order to effectively save the fuel consumption of the starting ignition of the boiler, a plurality of domestic projects at present consider adopting plasma ignition, micro-oil ignition and other ignition modes, but even so, a certain amount of fuel is required to be consumed.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides a neighboring furnace heating starting system with a heater;
the invention provides a neighboring furnace heating starting system with a heater, which comprises the following components: a first unit and a second unit;
the first unit comprises a first low-temperature economizer, a first condensate water heater, a first air preheater and a first condensate water tank, wherein the first low-temperature economizer is communicated with the first condensate water tank through a first waterway pipeline, the first low-temperature economizer is communicated with the first condensate water heater through a second waterway pipeline, the first condensate water heater is communicated with the first condensate water tank through a third waterway pipeline, and the first condensate water heater is communicated with the first air preheater through a first air supply pipeline;
the second unit comprises a second low-temperature economizer, a second condensate water heater, a second air preheater and a second condensate water tank, wherein the second low-temperature economizer is communicated with the second condensate water tank through a fourth waterway pipeline, the second low-temperature economizer is communicated with the second condensate water heater through a fifth waterway pipeline, the second condensate water heater is communicated with the second condensate water tank through a sixth waterway pipeline, and the second condensate water heater is communicated with the second air preheater through a second air supply pipeline;
the second waterway pipeline is communicated with the fifth waterway pipeline through a seventh waterway pipeline, and the third waterway pipeline is communicated with the sixth waterway pipeline through an eighth waterway pipeline.
Preferably, the seventh waterway pipeline is provided with a first regulating valve, and the eighth waterway pipeline is provided with a second regulating valve.
Preferably, the first water channel pipeline is provided with a first booster valve, and the fourth water channel pipeline is provided with a second booster valve.
In the invention, in the normal working stage of the A unit (one unit of the first unit or the second unit), the high-temperature closed water heating air heater heated by the low-temperature coal economizer of the A unit is utilized, so that the first air temperature and the second air temperature of the air preheater of the A unit are improved, the advantage of flue gas waste heat utilization of the low-temperature coal economizer is fully exerted, and when the B unit (the other unit of the first unit or the second unit) is in the starting stage, the A unit utilizes the high-temperature closed water heating air heater heated by the low-temperature coal economizer to heat the B unit, so that the time from the ignition of the B unit to the integral coordinated operation of the B unit can be shortened, the fuel consumption during the starting of the B unit can be reduced, the starting cost of the B unit can be reduced, and the method has obvious effects of relieving transverse cracks of a water cooling wall and over-fast heating rate.
Drawings
Fig. 1 is a schematic structural diagram of an adjacent furnace heating start system with a heater according to the present invention.
Detailed Description
In the first figure, 1-first unit, 11-first low-temperature economizer, 12-first condensate heater, 13-first air preheater, 14-first condensate water tank, 15-first water channel pipeline, 16-second water channel pipeline, 17-third water channel pipeline and 18-first air supply pipeline; 2-second units, 21-second low-temperature economizers, 22-second condensate water heaters, 23-second air pre-heaters, 24-second condensate water tanks, 25-fourth waterway pipelines, 26-fifth waterway pipelines, 27-sixth waterway pipelines and 28-second air supply pipelines; 3-seventh water channel pipeline, 4-eighth water channel pipeline.
Referring to fig. 1, the adjacent furnace heating start system with a heater provided by the invention comprises: a first unit and a second unit;
the first unit comprises a first low-temperature economizer, a first condensate water heater, a first air preheater and a first condensate water tank, wherein the first low-temperature economizer is communicated with the first condensate water tank through a first waterway pipeline, the first low-temperature economizer is communicated with the first condensate water heater through a second waterway pipeline, the first condensate water heater is communicated with the first condensate water tank through a third waterway pipeline, and the first condensate water heater is communicated with the first air preheater through a first air supply pipeline;
the second unit comprises a second low-temperature economizer, a second condensate water heater, a second air preheater and a second condensate water tank, wherein the second low-temperature economizer is communicated with the second condensate water tank through a fourth waterway pipeline, the second low-temperature economizer is communicated with the second condensate water heater through a fifth waterway pipeline, the second condensate water heater is communicated with the second condensate water tank through a sixth waterway pipeline, and the second condensate water heater is communicated with the second air preheater through a second air supply pipeline;
the second waterway pipeline is communicated with the fifth waterway pipeline through a seventh waterway pipeline, and the third waterway pipeline is communicated with the sixth waterway pipeline through an eighth waterway pipeline; the seventh waterway pipeline is provided with a first regulating valve, and the eighth waterway pipeline is provided with a second regulating valve; the first water channel pipeline is provided with a first booster valve, and the fourth water channel pipeline is provided with a second booster valve.
In the specific scheme, cold condensate water in a condensate water tank of a turbine side of an A unit (one of a first unit or a second unit) is heated by hot flue gas of a low-temperature coal economizer of the A unit, high-temperature closed water flowing out of the low-temperature coal economizer can flow into a condensate water heating air heater of the A unit, cold air entering the condensate water heating air heater is preheated and flows back, so that the temperature of first air and second air of the air preheater of the A unit is improved, the energy consumption of the air preheater of the A unit is reduced through waste heat utilization, the energy consumption of the B unit (one of the first unit or the second unit) at a starting stage can be reduced through the utilization of waste heat, the high-temperature closed water flowing out of the low-temperature coal economizer can enter the condensate water heating air heater of the B unit at a starting stage, the required parameters are achieved by means of the high-temperature closed water of the A unit, after the adjacent boiler is heated, a phase change area of a water cooling wall is greatly advanced, the thermal uniformity is extremely good, the transverse generation probability is reduced, the starting speed is greatly improved, the ignition time is shortened, the ignition time is shortened, the boiler is not has a fire-tube is greatly shortened, the fire-crack is prevented from being started, the boiler is greatly, the fire-down, the boiler is not has a fire-down valve is started, and the boiler is provided with a fire valve, the fire valve is greatly and the fire-down, the fire valve is opened, the fire valve is and the water, the fire valve is opened, the boiler is opened and the water and the boiler is opened and the water.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314430.3A CN110043918B (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 |
|---|---|---|---|
| CN201910314430.3A CN110043918B (en) | 2019-04-18 | 2019-04-18 | Adjacent furnace heating starting system with air heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110043918A CN110043918A (en) | 2019-07-23 |
| CN110043918B true CN110043918B (en) | 2024-04-02 |
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| CN201910314430.3A Active CN110043918B (en) | 2019-04-18 | 2019-04-18 | Adjacent furnace heating starting system with air heater |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558227A (en) * | 1983-06-14 | 1985-12-10 | Hitachi, Ltd. | Method of controlling operation of thermoelectric power station |
| DE8915497U1 (en) * | 1989-06-03 | 1990-08-16 | Vießmann, Hans, Dr., 3559 Battenberg | boiler |
| CN102305413A (en) * | 2011-07-28 | 2012-01-04 | 中国电力工程顾问集团西南电力设计院 | Exhaust gas waste heat recovery and emission reduction comprehensive application system for coal-fired boiler in thermal power plant |
| CN104296121A (en) * | 2014-09-25 | 2015-01-21 | 黑龙江宏宇电站设备有限公司 | Power station boiler neighbor machine steam heating starting device and warm starting method |
| CN204460172U (en) * | 2015-01-14 | 2015-07-08 | 陕西万方节能科技股份有限公司 | A kind of pulverized-coal fired boiler adjacent stove heating coil start up system |
| CN205137410U (en) * | 2015-11-23 | 2016-04-06 | 李东民 | Tuber pipe contact heating device of coal -fired pulverized coal boiler unit neighbour stove heat |
| CN205245218U (en) * | 2015-12-31 | 2016-05-18 | 神华集团有限责任公司 | Boiler system |
| CN106051805A (en) * | 2016-06-24 | 2016-10-26 | 福建龙净环保股份有限公司 | Waste heat recovery system and method with discharged smoke waste heat as heat source of air heater |
| CN207268458U (en) * | 2017-08-01 | 2018-04-24 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | The system for preventing ammonium hydrogen sulfate from blocking air preheater after SCR denitration transformation |
| CN207422196U (en) * | 2017-11-16 | 2018-05-29 | 山西崇光发电有限责任公司 | A kind of CFB units combine afterheat utilizing system |
| CN210035568U (en) * | 2019-04-18 | 2020-02-07 | 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 |
-
2019
- 2019-04-18 CN CN201910314430.3A patent/CN110043918B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558227A (en) * | 1983-06-14 | 1985-12-10 | Hitachi, Ltd. | Method of controlling operation of thermoelectric power station |
| DE8915497U1 (en) * | 1989-06-03 | 1990-08-16 | Vießmann, Hans, Dr., 3559 Battenberg | boiler |
| CN102305413A (en) * | 2011-07-28 | 2012-01-04 | 中国电力工程顾问集团西南电力设计院 | Exhaust gas waste heat recovery and emission reduction comprehensive application system for coal-fired boiler in thermal power plant |
| CN104296121A (en) * | 2014-09-25 | 2015-01-21 | 黑龙江宏宇电站设备有限公司 | Power station boiler neighbor machine steam heating starting device and warm starting method |
| CN204460172U (en) * | 2015-01-14 | 2015-07-08 | 陕西万方节能科技股份有限公司 | A kind of pulverized-coal fired boiler adjacent stove heating coil start up system |
| CN205137410U (en) * | 2015-11-23 | 2016-04-06 | 李东民 | Tuber pipe contact heating device of coal -fired pulverized coal boiler unit neighbour stove heat |
| CN205245218U (en) * | 2015-12-31 | 2016-05-18 | 神华集团有限责任公司 | Boiler system |
| CN106051805A (en) * | 2016-06-24 | 2016-10-26 | 福建龙净环保股份有限公司 | Waste heat recovery system and method with discharged smoke waste heat as heat source of air heater |
| CN207268458U (en) * | 2017-08-01 | 2018-04-24 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | The system for preventing ammonium hydrogen sulfate from blocking air preheater after SCR denitration transformation |
| CN207422196U (en) * | 2017-11-16 | 2018-05-29 | 山西崇光发电有限责任公司 | A kind of CFB units combine afterheat utilizing system |
| CN210035568U (en) * | 2019-04-18 | 2020-02-07 | 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 |
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| CN110043918A (en) | 2019-07-23 |
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