CN210035568U - Adjacent furnace heating starting system with air heater - Google Patents

Adjacent furnace heating starting system with air heater Download PDF

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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
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CN
China
Prior art keywords
condensed water
communicated
unit
water channel
pipeline
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Expired - Fee Related
Application number
CN201920530451.4U
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Chinese (zh)
Inventor
潘存华
彭志福
刘进峰
李德
周福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Boiler Pressure Vessel Examination Center Co Ltd
East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd
Original Assignee
Datang Boiler Pressure Vessel Examination Center Co Ltd
East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd
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Application filed by Datang Boiler Pressure Vessel Examination Center Co Ltd, East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd filed Critical Datang Boiler Pressure Vessel Examination Center Co Ltd
Priority to CN201920530451.4U priority Critical patent/CN210035568U/en
Application granted granted Critical
Publication of CN210035568U publication Critical patent/CN210035568U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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Abstract

The utility model discloses a take neighbor stove heating start-up system of air heater, include: two units, the units comprise a low-temperature coal economizer, a condensed water heating air device, an air preheater and a condensed water tank, the low-temperature coal economizer is communicated with the condensed water tank through a first water channel pipeline, the low-temperature coal economizer is communicated with the condensed water heating air device through a second water channel pipeline, the condensed water heating air device is communicated with the condensed water tank through a third water channel pipeline, the condensed water heating air device is communicated with the air preheater through an air supply pipeline, the first water channel pipelines of the two units are communicated through a seventh water channel pipeline, the third water channel pipelines of the two units are communicated through an eighth water channel pipeline, when the unit A works, the high-temperature closed water heating air device heated by the low-temperature coal economizer is utilized, thereby improving the temperature of the primary air and the secondary air at the inlet of the air preheater of the unit A, saving the heating cost of the air preheater, when the unit B is started, the high-temperature closed water of the unit A heats the air heater of the unit B, and the starting cost of the unit B is reduced.

Description

Adjacent furnace heating starting system with air heater
Technical Field
The utility model relates to a waste heat utilization technology field especially relates to an adjacent stove heating start-up system of area air heater.
Background
In recent years, with the continuous rise of international oil prices and the aggravation of global warming trends, energy conservation and emission reduction become social consensus, the starting time of a unit is shortened, the starting mode of the unit is optimized, and the focus of attention of investors is also provided. A boiler starting system is arranged for an ultra-supercritical unit and a once-through boiler so as to ensure the safety of the unit during low-load operation, realize the cold-state and hot-state washing of the boiler, save working media and heat and meet the starting requirements of the boiler in different states. However, the process is long in duration, and a large amount of fuel oil and coal are consumed. In order to effectively save the fuel consumption of boiler starting ignition, ignition modes such as plasma ignition or micro-oil ignition are considered in many projects in China at present, but even if the ignition modes are adopted, certain fuel still needs to be consumed.
SUMMERY OF THE UTILITY MODEL
Based on the technical problems existing in the background technology, the utility model provides an adjacent furnace heating starting system with a fan heater;
the utility model provides a pair of take neighbor stove heating start-up system of air heater, include: a first unit and a second unit;
the first unit comprises a first low-temperature economizer, a first condensed water heating air device, a first air preheater and a first condensed water tank, the first low-temperature economizer is communicated with the first condensed water tank through a first waterway pipeline, the first low-temperature economizer is communicated with the first condensed water heating air device through a second waterway pipeline, the first condensed water heating air device is communicated with the first condensed water tank through a third waterway pipeline, and the first condensed water heating air device is communicated with the first air preheater through a first air supply pipeline;
the second unit comprises a second low-temperature economizer, a second condensed water heating air device, a second air preheater and a second condensed water tank, the second low-temperature economizer is communicated with the second condensed water tank through a fourth water channel, the second low-temperature economizer is communicated with the second condensed water heating air device through a fifth water channel, the second condensed water heating air device is communicated with the second condensed water tank through a sixth water channel, and the second condensed water heating air device is communicated with the second air preheater through a second air supply channel;
the second water channel pipeline is communicated with the fifth water channel pipeline through a seventh water channel pipeline, and the third water channel pipeline is communicated with the sixth water channel pipeline through an eighth water channel pipeline.
Preferably, the seventh water channel is provided with a first regulating valve, and the eighth water channel is provided with a second regulating valve.
Preferably, a first pressure increasing valve is arranged on the first water channel, and a second pressure increasing valve is arranged on the fourth water channel.
The utility model discloses in, at a unit (certain unit in first unit or the second unit) normal working phase, utilize the high temperature closed water heating air heater of A unit through the heating of low temperature economizer, thereby improve the air preheater entry of A unit one, the overgrate air temperature, the advantage of the flue gas waste heat utilization of full play low temperature economizer, when B unit (another unit in first unit or the second unit) is in the start-up phase, utilize the air heater of the high temperature closed water heating B unit through the heating of low temperature economizer through A unit, both can shorten the time that B unit igniteed to the whole coordinated operation of unit, the consumption of fuel when also can reducing B unit start-up, reduce B unit start-up cost, to alleviating the horizontal crackle of water-cooling wall, rate of rising temperature has obvious effect at the excessive speed.
Drawings
Fig. 1 is a schematic structural diagram of an adjacent furnace heating start-up system with a fan heater provided by the utility model.
Detailed Description
In fig. 1, 1-a first unit, 11-a first low-temperature economizer, 12-a first condensed water heating blower, 13-a first air preheater, 14-a first condensed water tank, 15-a first water channel, 16-a second water channel, 17-a third water channel, 18-a first air supply channel; 2-a second unit, 21-a second low-temperature economizer, 22-a second condensed water heating air device, 23-a second air preheater, 24-a second condensed water tank, 25-a fourth water channel, 26-a fifth water channel, 27-a sixth water channel and 28-a second air supply channel; 3-a seventh water channel and 4-an eighth water channel.
Referring to fig. 1, the utility model provides a take neighbor stove heating start-up system of air heater, include: a first unit and a second unit;
the first unit comprises a first low-temperature economizer, a first condensed water heating air device, a first air preheater and a first condensed water tank, the first low-temperature economizer is communicated with the first condensed water tank through a first waterway pipeline, the first low-temperature economizer is communicated with the first condensed water heating air device through a second waterway pipeline, the first condensed water heating air device is communicated with the first condensed water tank through a third waterway pipeline, and the first condensed water heating air device is communicated with the first air preheater through a first air supply pipeline;
the second unit comprises a second low-temperature economizer, a second condensed water heating air device, a second air preheater and a second condensed water tank, the second low-temperature economizer is communicated with the second condensed water tank through a fourth water channel, the second low-temperature economizer is communicated with the second condensed water heating air device through a fifth water channel, the second condensed water heating air device is communicated with the second condensed water tank through a sixth water channel, and the second condensed water heating air device is communicated with the second air preheater through a second air supply channel;
the second water channel pipeline is communicated with the fifth water channel pipeline through a seventh water channel pipeline, and the third water channel pipeline is communicated with the sixth water channel pipeline through an eighth water channel pipeline; a first regulating valve is arranged on the seventh water channel, and a second regulating valve is arranged on the eighth water channel; and a first booster valve is arranged on the first water channel, and a second booster valve is arranged on the fourth water channel.
In the specific scheme, after condensed water in a condensed water tank at the steam side of a unit A (one unit in a first unit or a second unit) is heated by hot flue gas of a low-temperature economizer of the unit A, high-temperature closed water flowing out of the low-temperature economizer can flow into the condensed water heating air device of the unit A, cold air entering the condensed water heating air device is preheated and then flows back, the temperature of a first air preheater and a second air preheater of the unit A is further improved, the energy consumption of the air preheater of the unit A is reduced by utilizing waste heat, high-temperature closed water flowing out of the low-temperature economizer can enter a unit B (one unit in the first unit or the second unit) at the starting stage, the condensed water heating air device of the unit B is heated by the high-temperature closed water of the unit A to reach required parameters, the mode is that an adjacent furnace is used for heating, and after the adjacent furnace is used for heating, a phase change area of a water cooling wall is greatly advanced, the heat uniformity is very good, the service life loss of the unit is reduced, the generation probability of transverse cracks is reduced, the starting speed is greatly improved, the time from ignition of the unit to integral coordinated operation is greatly shortened, the use of initial fuel is saved, the starting time is shortened, the starting flow is reduced, the phenomenon that the boiler is exploded due to the fact that unburnt flame ignited by a cooling furnace directly erodes a convection heating surface can be avoided, the combustion of combustible substances at the tail of the boiler is avoided, the starting safety of the boiler is remarkably improved, a first regulating valve is arranged on a seventh water channel, a second regulating valve is arranged on an eighth water channel, and the circulation of high-temperature closed water is controlled by opening and closing the regulating valves.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (3)

1. The utility model provides a take neighbor stove heating start-up system of fan heater which characterized in that includes: a first unit and a second unit;
the first unit comprises a first low-temperature economizer, a first condensed water heating air device, a first air preheater and a first condensed water tank, the first low-temperature economizer is communicated with the first condensed water tank through a first waterway pipeline, the first low-temperature economizer is communicated with the first condensed water heating air device through a second waterway pipeline, the first condensed water heating air device is communicated with the first condensed water tank through a third waterway pipeline, and the first condensed water heating air device is communicated with the first air preheater through a first air supply pipeline;
the second unit comprises a second low-temperature economizer, a second condensed water heating air device, a second air preheater and a second condensed water tank, the second low-temperature economizer is communicated with the second condensed water tank through a fourth water channel, the second low-temperature economizer is communicated with the second condensed water heating air device through a fifth water channel, the second condensed water heating air device is communicated with the second condensed water tank through a sixth water channel, and the second condensed water heating air device is communicated with the second air preheater through a second air supply channel;
the second water channel pipeline is communicated with the fifth water channel pipeline through a seventh water channel pipeline, and the third water channel pipeline is communicated with the sixth water channel pipeline through an eighth water channel pipeline.
2. The adjacent furnace heating starting system with the air heater as claimed in claim 1, wherein a first regulating valve is arranged on the seventh water channel, and a second regulating valve is arranged on the eighth water channel.
3. The adjacent furnace heating starting system with the air heater as claimed in claim 1, wherein a first pressure increasing valve is provided on the first water path pipeline, and a second pressure increasing valve is provided on the fourth water path pipeline.
CN201920530451.4U 2019-04-18 2019-04-18 Adjacent furnace heating starting system with air heater Expired - Fee Related CN210035568U (en)

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

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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

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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Granted publication date: 20200207

Termination date: 20210418