CN216591789U - Wall-attached air device capable of being recycled at possible amount and preventing high-temperature corrosion - Google Patents
Wall-attached air device capable of being recycled at possible amount and preventing high-temperature corrosion Download PDFInfo
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- CN216591789U CN216591789U CN202121792359.9U CN202121792359U CN216591789U CN 216591789 U CN216591789 U CN 216591789U CN 202121792359 U CN202121792359 U CN 202121792359U CN 216591789 U CN216591789 U CN 216591789U
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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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Abstract
The utility model discloses a wall-attached air device capable of preventing high-temperature corrosion and capable of achieving energy recovery. The lower part of the air storage box is provided with a heater and the upper part of the second air preheaterA dry slag extractor is arranged below the second air preheater. The other end of second air heater is connected with the adherence wind bellows, and the intercommunication has the female pipe of adherence wind of vertical setting on the adherence wind bellows, and is provided with a plurality of adherence wind branch pipes on the female pipe of adherence wind, is provided with adherence wind spout on the adherence wind branch pipe. Two side walls of the water-cooled wall of the boiler are respectively provided with a CO measuring device and a H2And S, measuring the device. The utility model can reduce the exhaust gas temperature of the boiler, improve the efficiency of the boiler, prevent high-temperature corrosion, and has the advantages of simple structure, improved safety and stability of the unit, and prolonged service life.
Description
Technical Field
The utility model relates to the technical field of thermal power generation, in particular to a wall-attached wind device capable of preventing high-temperature corrosion and capable of being recycled.
Background
NO control to meet national emission standards and ultra-clean emission policyXThe control requirement of emission, low-nitrogen combustor and denitration technique are commonly adopted in power plant.
The principle of low-nitrogen combustion is low oxygen and staged combustion, so that under the low-nitrogen combustion condition, the oxygen content at the position close to the water-cooled wall of the hearth is lower, the CO concentration is higher, and the low-nitrogen combustion furnace is in a local strong reducing atmosphere. If the sulfur content of the coal as fired is high, a large amount of corrosive H is generated2S gas causes severe high-temperature corrosion of the water wall from the combustor to the high area of the burnout vane. This is particularly true for wall-fired opposed-fired boilers. Most of the thermal power plant boiler burner regions have strong local reducibility, H2The S content is high, and serious high-temperature corrosion hidden troubles exist in the furnace. In the daily boiler shutdown maintenance process of the boiler, the water wall is also found to have a thinning tendency; moreover, the direct discharge of high-temperature gas generated in the boiler also causes a waste of energy.
Therefore, a high temperature rot adherent wind device which can be recovered in an amount is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a wall-attached air device capable of preventing high-temperature corrosion and capable of being recycled, so that the problem of high-temperature corrosion of a water-cooled wall of a boiler is solved, and the efficiency of the boiler is improved.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
A wall-attached air device capable of being recycled with possibility and preventing high-temperature corrosion comprises a first air preheater arranged at the tail end of a boiler, wherein the other end of the first air preheater is communicated with an air storage box for temporarily storing air, the middle part of the air storage box is communicated with a ventilation pipe, and the other end of the ventilation pipe is communicated with a second air preheater; the lower part of the air storage box is provided with an air heater for keeping the air temperature; a boiler is arranged above the second air preheater, and a dry slag extractor for cooling and conveying hot slag is arranged below the second air preheater; the other end of the second air preheater is connected with an adherence air bellow, the adherence air bellow is communicated with a vertically arranged adherence air main pipe, the adherence air main pipe is provided with a plurality of adherence air branch pipes, and adherence air nozzles are arranged on the adherence air branch pipes; two side walls of a water-cooled wall of the boiler are respectively provided with a CO measuring device and an H2And S, measuring the device.
According to the technical scheme, the ventilating pipe is provided with the booster fan, and the booster fan is a centrifugal booster fan.
Further optimizing the technical scheme, all be provided with the electric control valve that is used for adjusting adherence wind size on the adherence wind branch pipe.
Further optimize technical scheme, the main pipe of adherence wind is arranged at four angular positions of boiler, and the pipe diameter of the main pipe of adherence wind is greater than the pipe diameter of the branch pipe of adherence wind.
Due to the adoption of the technical scheme, the technical progress of the utility model is as follows.
According to the wall-attached air device capable of being recycled with the possibility and preventing the high-temperature corrosion, provided by the utility model, the wall-attached air is heated by the second air preheater arranged at the bottom of the boiler, so that the air leakage quantity of the bottom of the boiler can be reduced, the stable combustion effect of a coal mill at the bottom of the boiler is improved, the smoke exhaust temperature of the boiler can be reduced, and the efficiency of the boiler is improved. The utility model measures CO and H on line2And S, adjusting the wall-attached air quantity in real time under two reducing atmospheres to prevent the ejection effect caused by overlarge wall-attached air quantity.The utility model can reduce the exhaust gas temperature of the boiler, improve the efficiency of the boiler, realize energy recovery, prevent high-temperature corrosion, and has the advantages of simple structure, improved safety and stability of the unit and prolonged service life.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a distribution diagram of wall-attached air nozzles in the present invention;
wherein: 1. booster fan, 2, air heater, 3, second air preheater, 4, adherence air bellow, 5, adherence air main pipe, 6, adherence air branch pipe, 7, electric regulating valve, 81, CO measuring device, 82, H2S measuring device, 9, a boiler, 91, a first air preheater, 92, an air storage box, 93, a ventilation pipe, 10 and a dry slag extractor.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings.
A wall-attached air device capable of being recycled and preventing high-temperature corrosion is shown in a combined figure 1-2 and comprises a booster fan 1, a fan heater 2, a second air preheater 3, a wall-attached air bellow 4, a wall-attached air main pipe 5, a wall-attached air branch pipe 6, an electric regulating valve 7, a CO measuring device 81 and an H measuring device2 S measuring device 82, boiler 9, first air preheater 91 and dry slag extractor 10.
The first air preheater 91 is provided at the rear end of the boiler 9 at a portion for containing water and steam at the right side of the boiler 9. The other end of the first air preheater 91 is communicated with a wind storage box for temporarily storing wind, the middle part of the wind storage box is communicated with a ventilation pipe, and the other end of the ventilation pipe is communicated with the second air preheater 3. The ventilating pipe is provided with a booster fan 1, and the booster fan 1 adopts a centrifugal booster fan 1.
The lower part of the air storage box is provided with an air heater 2 for keeping the temperature of air in the air storage box from dropping. The boiler 9 is arranged above the second air preheater 3, the dry-type slag extractor 10 is arranged below the second air preheater 3, and the dry-type slag extractor 10 is used for cooling and conveying hot slag. The other end of the second air preheater 3 is connected with a wall-attached air bellow 4 through a pipeline, and the wall-attached air bellow 4 is connected withThrough having four main pipes 5 of adherence wind of vertical setting, main pipe 5 of adherence wind arranges four angular positions at boiler 9. A plurality of wall-attached air branch pipes 6 which are horizontally arranged are arranged on the wall-attached air main pipe 5, and wall-attached air nozzles are arranged on the wall-attached air branch pipes 6; and the pipe diameter of the wall-attached air main pipe 5 is larger than that of the wall-attached air branch pipe 6. Electric adjusting valves 7 for adjusting the size of the adherent wind are arranged on the adherent wind branch pipes 6. Two side walls of the water wall of the boiler 9 are respectively provided with a CO measuring device 81 and an H2S measuring means 82.
When the wall-attached air source is actually used, flue gas at the tail part of the boiler 9 is preheated by the first air preheater 91, enters the air storage box, is led out from the outlet of the air heater 2 to enter the ventilation pipe, and is heated by the booster fan 1 in the ventilation pipe through the first air preheater 91 above the furnace bottom slag drying machine of the boiler 9, so that the air leakage quantity at the bottom of the boiler 9 can be reduced, the combustion stabilizing effect of a coal mill at the bottom of the boiler 9 is improved, the smoke exhaust temperature of the boiler 9 is reduced, and the efficiency of the boiler 9 is improved. Then the wall-adherent wind enters the wall-adherent bellows, then enters the four-way wall-adherent wind main pipe 5, then enters the wall-adherent wind branch pipe 6, and finally is sprayed out from the wall-adherent wind nozzle to destroy the reducing atmosphere. An electric regulating valve 7 is arranged on the wall-attached wind branch pipe 6, the wind speed of wall-attached wind can be regulated by regulating the electric regulating valve 7, and the CO measuring device 81 and the H are used2The S measuring device 82 measures the reducing atmosphere in the water-cooled wall region for adjusting the amount of wall-attached wind.
Claims (4)
1. The utility model provides a high temperature corrosion's of preventing adherence wind device that possible volume was retrieved which characterized in that: the air conditioner comprises a first air preheater (91) arranged at the tail end of a boiler (9), wherein the other end of the first air preheater (91) is communicated with an air storage box for temporarily storing air, the middle part of the air storage box is communicated with a ventilation pipe, and the other end of the ventilation pipe is communicated with a second air preheater (3); the lower part of the air storage box is provided with an air heater (2) for keeping the air temperature; a boiler (9) is arranged above the second air preheater (3), and a dry slag extractor (10) for cooling and conveying hot slag is arranged below the second air preheater (3); the other end of the second air preheater (3) is connected with wall-attached windThe box (4), the wall-attached wind box (4) is communicated with a wall-attached wind main pipe which is vertically arranged, the wall-attached wind main pipe (5) is provided with a plurality of wall-attached wind branch pipes (6), and the wall-attached wind branch pipes (6) are provided with wall-attached wind nozzles; two side walls of a water-cooled wall of the boiler (9) are respectively provided with a CO measuring device (81) and an H measuring device2S a measuring device (82).
2. The energy recovery high temperature corrosion resistant adherent wind device of claim 1, wherein: a booster fan (1) is arranged on the ventilation pipe, and the booster fan (1) is a centrifugal booster fan.
3. The energy recovery high temperature corrosion resistant adherent wind device of claim 1, wherein: electric adjusting valves (7) used for adjusting the size of the adherent wind are arranged on the adherent wind branch pipes (6).
4. The energy recovery high temperature corrosion resistant adherent wind device of claim 3, wherein: the main adherent wind pipes (5) are arranged at four corners of the boiler (9), and the pipe diameters of the main adherent wind pipes (5) are larger than those of the branch adherent wind pipes (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121792359.9U CN216591789U (en) | 2021-08-03 | 2021-08-03 | Wall-attached air device capable of being recycled at possible amount and preventing high-temperature corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121792359.9U CN216591789U (en) | 2021-08-03 | 2021-08-03 | Wall-attached air device capable of being recycled at possible amount and preventing high-temperature corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216591789U true CN216591789U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121792359.9U Active CN216591789U (en) | 2021-08-03 | 2021-08-03 | Wall-attached air device capable of being recycled at possible amount and preventing high-temperature corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216591789U (en) |
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2021
- 2021-08-03 CN CN202121792359.9U patent/CN216591789U/en active Active
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