CN108800203B - Oil ignition system and method for circulating fluidized bed boiler - Google Patents
Oil ignition system and method for circulating fluidized bed boiler Download PDFInfo
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- CN108800203B CN108800203B CN201810730914.1A CN201810730914A CN108800203B CN 108800203 B CN108800203 B CN 108800203B CN 201810730914 A CN201810730914 A CN 201810730914A CN 108800203 B CN108800203 B CN 108800203B
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- oil
- ignition
- door
- igniter
- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
本发明公开了循环流化床锅炉的油点火系统及方法，包括雾化装置，所述雾化装置用于分别提供雾化风及雾化油，所述雾化风及雾化油在点火筒内有点火器引燃。本发明配有雾化风的这种点火方式启动快，节约油耗，在没有进行雾化风时，点火油压控制在1.2‑1.5MPa，进行雾化风配置后，本发明油压控制在0.5MPa，风压控制在0.5MPa，使油枪喷出的油雾化良好，点火器点然后燃烧良好，温升速度提的快，油燃料的热利用率高，节约了能源，减少了人力资源的浪费。
The invention discloses an oil ignition system and method for a circulating fluidized bed boiler, including an atomization device, the atomization device is used to respectively provide atomization wind and atomization oil, and the atomization wind and atomization oil are in the ignition cylinder. There is an igniter inside. The ignition method equipped with the atomizing air in the present invention starts quickly and saves fuel consumption. When the atomizing air is not used, the ignition oil pressure is controlled at 1.2-1.5 MPa. After the atomizing air is configured, the oil pressure in the present invention is controlled at 0.5 MPa, the air pressure is controlled at 0.5MPa, so that the oil sprayed by the oil gun is well atomized, the igniter is ignited and then burns well, the temperature rise speed is fast, the heat utilization rate of oil fuel is high, energy is saved, and human resources are reduced. of waste.
Description
Technical Field
The invention relates to the technical field of oil ignition, in particular to an oil ignition system and method of a circulating fluidized bed boiler.
Background
The oil ignition system is an important auxiliary system of the circulating fluidized bed boiler, ignition is carried out by using a torch during ignition, negative pressure of a hearth is not well adjusted, fire is extinguished, the ignition time is long, large bed coking is caused sometimes, normal starting of the boiler is influenced, and waste of manpower and material resources is caused.
The ignition time is slightly long, and due to the fact that oil combustible materials are excessively gathered, the combustor can explode, the boiler cannot be started, the boiler can only be stopped for maintenance, and the safety of crisis personnel can be guaranteed.
When the boiler can not be started normally, the electricity and steam consumption of a user are influenced, and huge loss can be caused to the boiler user.
In summary, no solution exists at present for the problem of local coking of large beds due to uneven heating in the initial stage of ignition and the problem of detonation of a combustible burner due to long ignition time.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the oil ignition system of the circulating fluidized bed boiler, the system is provided with the ignition mode of the atomized air, the starting is fast, the oil consumption is saved, after the configuration of the atomized air is carried out, the oil pressure is controlled to be 0.5MPa, the air pressure is controlled to be 0.5MPa, the oil sprayed by an oil gun is well atomized, the ignition of an igniter is good, the temperature rise speed is fast, the heat utilization rate of oil fuel is high, the energy is saved, and the waste of human resources is reduced.
Oil ignition system of circulating fluidized bed boiler, including atomizing device, atomizing device is used for providing atomizing wind and atomizing oil respectively, atomizing wind and atomizing oil have the igniter to ignite in an ignition section of thick bamboo.
According to a further preferable technical scheme, the atomization device comprises a compressed air main door arranged on a compressed air pipeline, a compressed air door arranged on one side is further installed on the other pipeline connected with the compressed air pipeline, the compressed air door is connected to an igniter in an ignition cylinder through a pipeline, and the amount of compressed air entering the igniter in the ignition cylinder is controlled by controlling the sizes of the compressed air main door and the compressed air door arranged on one side;
the atomizing device further comprises an oil inlet main door arranged on the oil way pipeline, the oil inlet main door is connected to the oil gun through a pipeline, the oil gun is connected to an igniter in the ignition cylinder, an oil gun manual door and an oil gun electromagnetic valve are arranged on the oil gun, and the oil mass of the igniter entering the ignition cylinder is controlled by controlling the size of the oil inlet main door, the oil gun manual door and the oil gun electromagnetic valve.
According to a further preferable technical scheme, the oil inlet main door is further connected to an oil tank, one end of the oil tank is connected to the oil inlet main door through an oil recirculation door, the other end of the oil tank is connected to an oil outlet main door, and the oil outlet main door is connected to the oil inlet main door through an oil pump.
According to a further preferred technical scheme, the number of the oil pumps is two, two ends of each oil pump are respectively provided with an accelerator, and the oil tank is further provided with an oil tank air door and an oil tank sewage discharge door.
A method of operating an oil ignition system of a circulating fluidized bed boiler, comprising:
checking to determine that the system is oilless, extracting the igniter, and determining that the igniter is normally ignited according to an ignition experiment;
then, the igniter is pushed in, and an oil pump is started to adjust oil pressure to achieve ignition oil pressure;
the method comprises the steps of starting a combustion air small air door and atomization air, blowing an oil system, then generating sparks by ignition, starting an oil inlet throttle of an oil circuit, observing immediate ignition, immediately stopping oil inlet if ignition fails, blowing a combustion chamber by large combustion air, re-igniting after checking no abnormity, withdrawing an igniter after successful ignition, controlling the temperature to slowly rise, and regulating and controlling by the combustion air.
Further preferred technical scheme starts the oil pump and adjusts the oil pressure and reach ignition oil pressure, specifically does: and opening an oil outlet main door and an accelerator of the oil pump, adjusting an oil recirculation door and controlling the oil pressure to be at a set value.
Further preferred technical scheme opens burning wind little air door and atomizing wind, specifically is: and opening and adjusting the compressed air main door and the compressed air door at one side, and controlling the air pressure at a set value.
Compared with the prior art, the invention has the beneficial effects that:
the ignition mode provided with the atomized air has the advantages of fast start and oil consumption saving, when the atomized air is not used, the ignition oil pressure is controlled to be 1.2-1.5MPa, after the atomized air is configured, the oil pressure is controlled to be 0.5MPa, and the air pressure is controlled to be 0.5MPa, so that the oil sprayed by an oil gun is well atomized, the ignition point and the combustion are good, the temperature rise speed is high, the heat utilization rate of oil fuel is high, the energy is saved, and the waste of human resources is reduced.
The atomization wind ignition mode solves the problem of local coking caused by uneven heating of a large bed in the initial ignition stage, and brings harm to handling of coke blocks for operators.
The invention lays a foundation for safe starting of the boiler, and the phenomenon of deflagration of the ignitable device does not occur.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic of the system architecture of the present application;
in the figure, 1-oil tank; 2-oil tank air door; 3-oil tank blow-down door; 4-oil outlet main gate; 5- #1 oil pump; 6- (1) -the throttle of the oil pump; 7- #2 oil pump; 8- (2) -the throttle of the oil pump; 9-pressure gauge; 10-oil recirculation door; 11-compressed air main; 12-left side compressed air door; 13- #9 furnace oil inlet main door; 14-oil gun manual door; 15-oil gun electromagnetic valve, 16-igniter; 17-ignition cylinder.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In one exemplary embodiment, an oil ignition system for a circulating fluidized bed boiler includes an ignition system, an oil system, a combustion air system, and a firing chamber system.
Wherein, the ignition system mainly comprises: an igniter, a pushing mechanism, a high-voltage generator and the like. The oil system is mainly composed of: oil pump, oil mass controlling means, atomizing device effect are for atomizing wind atomizing. It should be noted that, the connection of compressed air into the oil gun for atomization is an improvement point of this embodiment compared with the prior art, and the improvement embodied in the structure is to add a new path of compressed air.
The combustion air system consists of an air quantity control device and an air duct. The air quantity control device can be an air door when being implemented, and the air in the air duct is hot air generally.
The starting chamber system is a combustion space constructed by high-temperature heat-resistant materials, is used for generating high-temperature smoke through combustion of oil, and does not need the high-temperature smoke when being ignited at the upper part.
Introduction to the igniter: at present, most of the purposes are high-voltage igniters, namely, high-voltage current is generated through a high-voltage generator, the high-voltage current is discharged at the tip of the igniter, the principle of the high-voltage igniters is the same as that of an electric stick, atomized oil is ignited through generated sparks, atomized air atomization is provided with an independent atomized air system, and compressed air atomization is used, and the high-voltage igniters are similar to sprayers.
In the embodiment, the atomization device comprises a compressed air main door 11 arranged on a compressed air pipeline, a left compressed air door 12 arranged on the left side is further arranged on the other pipeline connected with the compressed air pipeline, the compressed air door is connected to an igniter 16 in an ignition cylinder 17 through a pipeline, and the amount of compressed air entering the igniter in the ignition cylinder is controlled by controlling the sizes of the compressed air main door and the compressed air door arranged on one side;
the atomizing device further comprises a #9 furnace oil inlet main door 13 arranged on the oil way pipeline, the oil inlet main door is connected to an oil gun through a pipeline, the oil gun is connected to an igniter in an ignition cylinder, an oil gun manual door 14 and an oil gun electromagnetic valve 15 are arranged on the oil gun, and the oil quantity of the igniter in the ignition cylinder is controlled by controlling the size of the oil inlet main door, the oil gun manual door and the oil gun electromagnetic valve.
The oil inlet main gate is also connected to an oil tank 1, one end of which is connected to the oil inlet main gate through an oil recirculation gate 10, the other end of which is connected to an oil outlet main gate 4, which is connected to the oil inlet main gate through an oil pump. The oil pump comprises a #1 oil pump 5 and a #2 oil pump 7, wherein a #1 oil pump accelerator 6 is respectively connected to two ends of the #1 oil pump, and a #2 oil pump accelerator 8 is respectively connected to two ends of the #2 oil pump. And a pressure gauge 9 for detecting the pressure of the oil pump is also arranged on a pipeline between the oil pump and the oil inlet main door of the #9 furnace.
The oil tank is also provided with an oil tank air door 2 and an oil tank sewage door 3.
The atomizing air is specifically compressed air and atomized oil sprayed by an atomizing oil gun, and an igniter is arranged in an ignition cylinder for ignition, so that the oil and the air are fully combusted in the ignition cylinder. The compressed air is only used when the boiler is ignited or used when the oil pump is started when the boiler is extinguished. On the basis of original pipeline, a path of compressed air is added and connected with a fire tube, and the path of compressed air is connected with a pipeline of compressed air used by an ash pump without adding new equipment.
The ignition working process is as follows: opening an oil outlet main door 4, a #2 oil pump accelerator 8 and an oil recycling door 10, starting a #2 oil pump 7, adjusting the oil recycling door 10, controlling the oil pressure to be 0.5MPa, opening a compressed air main door 11 and a left compressed air door 12, controlling the air pressure to be 0.2MPa, opening an oil inlet main door 13 of a #9 furnace, an oil gun manual door 14, an oil gun electromagnetic valve 15, starting an igniter 16, sending hot smoke generated after ignition into a fluidized bed to heat bed materials through an air distribution plate by primary air, wherein the igniter 16 is a device for guiding oil.
The technical principle of ignition is as follows: bed materials are heated by hot smoke entering the fluidized bed through the air distribution plate, air doors of main air ducts on two sides of an air chamber before ignition are closed, and a device is opened after ignition. The hot smoke generated after the oil gun is ignited is sent into the fluidized bed to heat the bed charge through the air distribution plate by primary air, and the whole ignition process is divided into three stages. 1) Heating bed materials: the primer is heated to the ignition temperature. 2) Ignition and deflagration of the bed charge: after the bed charge reaches a certain ignitable temperature, the bed charge is properly fueled, and the bed temperature is further raised by the heat released by the safe combustion. 3) Transition to normal operating parameters: the bed temperature is controlled by the air quantity, fuel is supplied when the bed is started, the ratio of air and fuel is adjusted, and normal operation parameters are gradually transited. And when the bed temperature is above 850 ℃ in the later stage of ignition, the oil gun is timely withdrawn, and the ignition air door is switched to the main air duct air door.
Principle of igniter: high voltage current is generated by a high voltage generator to discharge at the igniter tip , which, unlike the electric wand, ignites the atomized oil by the resulting spark.
The oil tank 1 is a device for storing oil. The oil tank blow-off door 3 is used for discharging impurities at the bottom of the oil tank. The oil recirculation gate 10 is formed by fully opening the oil recirculation gate 10 when the #2 oil pump 7 is started, so as not to overpressure the oil pressure, and then adjusting the oil recirculation gate 10 as needed.
The above system of the present application operates specifically: firstly, checking and determining that the inside of a system is oil-free, drawing out an igniter, performing an ignition experiment, determining that the igniter is normally ignited, then pushing the igniter, starting an oil pump to adjust the oil pressure to achieve the ignition oil pressure, starting a combustion air small air door and atomization air, purging an oil system, generating sparks according to ignition, starting an oil circuit to enter an accelerator, observing to immediately ignite, immediately stopping oil feeding if ignition failure is found, purging a combustion chamber by opening large combustion air, re-igniting after no abnormity is checked, withdrawing the igniter (preventing the igniter from being burned out) after the ignition is successful, controlling the slow rise of the temperature, and regulating and controlling by using the combustion air, wherein what needs to be explained is that: ignition is performed with the boiler fan turned on and the fluidizing air flow rate maintained.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730914.1A CN108800203B (en) | 2018-07-05 | 2018-07-05 | Oil ignition system and method for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730914.1A CN108800203B (en) | 2018-07-05 | 2018-07-05 | Oil ignition system and method for circulating fluidized bed boiler |
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| Publication Number | Publication Date |
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| CN108800203A CN108800203A (en) | 2018-11-13 |
| CN108800203B true CN108800203B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810730914.1A Expired - Fee Related CN108800203B (en) | 2018-07-05 | 2018-07-05 | Oil ignition system and method for circulating fluidized bed boiler |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112161293A (en) * | 2020-08-19 | 2021-01-01 | 华电电力科学研究院有限公司 | Optimization control method for improving boiler fuel oil automatic ignition success rate |
| CN115479282A (en) * | 2022-09-29 | 2022-12-16 | 攀钢集团攀枝花钢钒有限公司 | Waste mineral oil treatment method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866766U (en) * | 2010-11-17 | 2011-06-15 | 上海神明控制工程有限公司 | Mechanical atomization oil gun with secondary atomization performance |
| WO2011150012A2 (en) * | 2010-05-25 | 2011-12-01 | Exxonmobil Research And Engineering Company | Fluid injection nozzle for fluid bed reactors |
| CN203068513U (en) * | 2012-11-29 | 2013-07-17 | 福建三能节能科技有限责任公司 | High-efficiency and energy-saving atomization oil gun |
| CN203703961U (en) * | 2014-02-12 | 2014-07-09 | 南京文涛电力科技有限公司 | Special energy-saving and environment-friendly oil burner for circulating fluidized bed boiler |
| CN206556002U (en) * | 2017-03-06 | 2017-10-13 | 洛阳清源石化有限公司 | A kind of composite atomizing oil gun used on CFBB |
-
2018
- 2018-07-05 CN CN201810730914.1A patent/CN108800203B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011150012A2 (en) * | 2010-05-25 | 2011-12-01 | Exxonmobil Research And Engineering Company | Fluid injection nozzle for fluid bed reactors |
| CN201866766U (en) * | 2010-11-17 | 2011-06-15 | 上海神明控制工程有限公司 | Mechanical atomization oil gun with secondary atomization performance |
| CN203068513U (en) * | 2012-11-29 | 2013-07-17 | 福建三能节能科技有限责任公司 | High-efficiency and energy-saving atomization oil gun |
| CN203703961U (en) * | 2014-02-12 | 2014-07-09 | 南京文涛电力科技有限公司 | Special energy-saving and environment-friendly oil burner for circulating fluidized bed boiler |
| CN206556002U (en) * | 2017-03-06 | 2017-10-13 | 洛阳清源石化有限公司 | A kind of composite atomizing oil gun used on CFBB |
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| CN108800203A (en) | 2018-11-13 |
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