WO2006049588A1 - Burner device for boiler furnace - Google Patents
Burner device for boiler furnace Download PDFInfo
- Publication number
- WO2006049588A1 WO2006049588A1 PCT/UA2004/000076 UA2004000076W WO2006049588A1 WO 2006049588 A1 WO2006049588 A1 WO 2006049588A1 UA 2004000076 W UA2004000076 W UA 2004000076W WO 2006049588 A1 WO2006049588 A1 WO 2006049588A1
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- WIPO (PCT)
- Prior art keywords
- air
- ejector
- burner
- air pipe
- boiler furnace
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
- F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2202/00—Fluegas recirculation
- F23C2202/30—Premixing fluegas with combustion air
Definitions
- the invention relates to a power system and can be used to burn fuel in the furnaces of industrial steam and hot water boilers that are not equipped with air heaters.
- a burner device for a boiler furnace comprising an air pipe with a swirl forming a burner body inside the air pipe, according to axis installed pipe for supplying flue gases, as well as a fuel supply unit.
- the device is also equipped with a gas-blown ejector, the active nozzle of which is connected to the furnace, the passive nozzle is connected to the air pipe, and the mixing chamber is connected to the flue gas supply pipe.
- the amount of air entering the mixing is regulated by its flow rate regulator.
- the prototype of the inventive burner for the furnace the boiler is a burner (Gut F.E., Levandra O.F., Sinyakevich B.G. Burner for liquid and gaseous fuels with recirculated air heating U / Energetik. - 1980 - Ne 10 - p.13-15), containing an air pipe with a swirl, forming a burner body, a nosy supply unit is installed along the axis along the axis of the air pipe.
- the air pipe is connected to a horizontally arranged gas-air ejector using a transition duct.
- the active nozzle of the gas-injected ejector is connected to the cold air duct from the fan, and the passive nozzle is connected to the boiler furnace.
- This device provides heating of the entire air flow supplied to the combustion to a temperature of 80 - 100 0 C.
- this level of air heating is not sufficient.
- the level of air heating is limited by the resistance of the air path behind the ejector. Air is heated by mixing hot products of combustion of fuel (gases) with a stream of cold air supplied to the combustion. The higher the proportion of gases contained in the resulting mixture, the higher the level of air heating and the lower the level of nitrogen oxides generated. In this device, the proportion of gases in the mixture does not exceed 8 - 10%, which is not enough to significantly reduce the generation of nitrogen oxides in the flame of a burning fuel.
- the basis of the invention is the task to increase the level of air heating, which in turn will increase the efficiency of the boiler, as well as to reduce the generation of nitrogen oxides in the furnace of the boiler. Disclosure of invention
- a sickle-feeding unit is installed along the axis along the axis of the pipe, as well as containing a gas-air ejector, the active nozzle of which is connected to the cold air duct from the fan, and the passive nozzle is connected to the boiler furnace, according to the invention, the air-ejector is erected vertically relative to the burner body and Q is connected directly to the air pipe.
- the vertical layout of the ejector relative to the burner body eliminates the transitional duct from the burner design, which significantly reduces the resistance of the air path behind the ejector and increases the ejection coefficient. Due to the increase in the ejection coefficient, the proportion of combustion products in the mixture increases, which ensures an increase in temperature in the mixture and a decrease in the generation of nitrogen oxides.
- FIG. 1 shows a diagram of a burner device, in section, a front view; in FIG. 2 - burner device, side view.
- the burner device for the boiler furnace contains an air pipe 1 with a swirler 2, forming a burner body, along the axis of the air pipe a nauseous supply unit 3 is installed.
- Air pipe 1 is connected to the outlet of the diffuser 4 of the gas-air ejector 5, the passive nozzle 6 of which is connected to the furnace 7, and active nozzle 8, - to the air supply pipe from the boiler fans.
- Liquid or gaseous fuel enters through the fuel supply unit 3 into the furnace 7 of the boiler.
- the entire air flow in the amount necessary for burning fuel is supplied to the active nozzle 8 of the gas-air ejector 5. Due to the energy of the swirling air stream from the furnace 7 of the boiler, hot gaseous products of fuel combustion are sucked into the ejector 5 through the passive nozzle 6.
- a stream of cold air is mixed with a stream of hot products of fuel combustion, and the resulting mixture enters the air pipe 1 of the burner device and then, through a swirl 2, into the furnace 7 of the boiler.
- the vertical design of the ejector 5 relative to the burner body is used in the proposed design of the burner device, which allows to reduce the resistance of the air duct behind the ejector to the minimum possible value, thereby increasing the ejection coefficient up to 20%, against 10-12% of the prototype.
- the indicated level of the content of fuel combustion products in the gas-air mixture provides, in addition to a significant improvement in the economic performance of the boiler, a reduction in NO emissions of approximately 2 times, and a reduction in soot emissions from 0.43 g / m 3 to 0,00021 g / m 3 .
- the proposed burner device can be used to burn fuel in the furnaces of industrial steam and hot water boilers that are not equipped with air heaters. According to test data, the burner device provides an increase
- the efficiency of a fuel oil boiler is ⁇ 4%.
Abstract
The inventive burner device for a boiler furnace comprises and air pipe (1) which is provided with a swirler (2) and forms the burner body and a fuel supply unit (3) disposed inside the air pipe (1). Said device also comprises a gas-air ejector (5) which is arranged in a vertical position with respect to the burner body and is directly connected to the air pipe (1). The active nozzle (8) of the ejector (5) is connected to a duct for cold air from a fan and a passive nozzle (6) is connected to the boiler furnace (7).
Description
Горелочное устройство для топки котла Burner for boiler furnace
Область техникиTechnical field
Изобретение относится к теплоэнергетике и может быть использовано для сжигания топлива в топках промышленных паровых и водогрейных котлов, не оборудованных воздухоподогревателями.The invention relates to a power system and can be used to burn fuel in the furnaces of industrial steam and hot water boilers that are not equipped with air heaters.
Предшествующий уровень техники Известно горелочное устройство для топки котла (Авторское свидетельство СССР Xs 1105728, Кл. F23C9/00; F23 D 17/00, публ. 1984 г.), содержащее воздушную трубу с завихрителем, образующую корпус горелки, внутри воздушной трубы, по оси установлена труба для подачи дымовых газов, а также топливоподающий узел. Устройство также снабжено газовоздупшым эжектором, активное сопло которого подключено к топке, пассивное - к воздушной трубе, а камера смешения - к трубе для подачи дымовых газов. Количество воздуха, поступающего на смешение, регулируется регулятором его расхода. Однако такая конструкция устройства не обеспечивает подогрев всего потока воздуха, подаваемого на горение, а только его часть, в результате чего недостаточно идентифицируется процесс горения, а в случае ошибочного закрытия регулятора процесс подогрева воздуха может совсем прекратиться. Прототипом заявляемого горелочного устройства для топки
котла является горелочное устройство (Гут Ф.E.,Лeвaндpвcкий O.Ф.,Cинякeвич Б.Г. Горелка для жидкого и газообразного топлива с рециркуляционным подогревом воздухаУ/Энергетик.- 1980 г. - Ne 10 - с.13-15), содержащее воздушную трубу с завихрителем, образующую корпус горелки, внутри воздушной трубы по оси установлен тошiивоподающий узел. Воздушная труба соединена с горизонтально расположенным газовоздушным эжектором с помощью переходного воздуховода. Активное сопло газовоздупшого эжектора соединено с воздуховодом холодного воздуха от вентилятора, а пассивное сопло - с топкой котла.BACKGROUND OF THE INVENTION A burner device for a boiler furnace is known (USSR Author's Certificate Xs 1105728, Cl. F23C9 / 00; F23 D 17/00, publ. 1984), comprising an air pipe with a swirl forming a burner body inside the air pipe, according to axis installed pipe for supplying flue gases, as well as a fuel supply unit. The device is also equipped with a gas-blown ejector, the active nozzle of which is connected to the furnace, the passive nozzle is connected to the air pipe, and the mixing chamber is connected to the flue gas supply pipe. The amount of air entering the mixing is regulated by its flow rate regulator. However, this design of the device does not provide heating of the entire flow of air supplied to the combustion, but only part of it, as a result of which the combustion process is not sufficiently identified, and in the event of an incorrect closing of the regulator, the heating of the air may completely stop. The prototype of the inventive burner for the furnace the boiler is a burner (Gut F.E., Levandra O.F., Sinyakevich B.G. Burner for liquid and gaseous fuels with recirculated air heating U / Energetik. - 1980 - Ne 10 - p.13-15), containing an air pipe with a swirl, forming a burner body, a nosy supply unit is installed along the axis along the axis of the air pipe. The air pipe is connected to a horizontally arranged gas-air ejector using a transition duct. The active nozzle of the gas-injected ejector is connected to the cold air duct from the fan, and the passive nozzle is connected to the boiler furnace.
Это устройство обеспечивает подогрев всего потока воздуха, подаваемого на горение до температуры 80 - 1000C. Однако для получения максимального эффекта такой уровень подогрева воздуха не достаточен. Уровень подогрева воздуха ограничивается сопротивлением воздушного тракта за эжектором. Подогрев воздуха осуществляется за счет смешения горячих продуктов сгорания топлива (газов) с потоком холодного воздуха подаваемого на горение. Чем выше доля газов, содержащихся в образующейся смеси, тем выше уровень подогрева воздуха и ниже уровень генерированных оксидов азота. В этом устройстве доля газов в смеси не превышает 8 - 10%, что недостаточно для существенного снижения генерации оксидов азота в факеле горящего топлива.This device provides heating of the entire air flow supplied to the combustion to a temperature of 80 - 100 0 C. However, to obtain the maximum effect, this level of air heating is not sufficient. The level of air heating is limited by the resistance of the air path behind the ejector. Air is heated by mixing hot products of combustion of fuel (gases) with a stream of cold air supplied to the combustion. The higher the proportion of gases contained in the resulting mixture, the higher the level of air heating and the lower the level of nitrogen oxides generated. In this device, the proportion of gases in the mixture does not exceed 8 - 10%, which is not enough to significantly reduce the generation of nitrogen oxides in the flame of a burning fuel.
В основу изобретения поставлена задача, повысить уровень подогрева воздуха, что в свою очередь повысит КПД котла, а также обеспечить снижение генерации оксидов азота в топке котла.
Раскрытие изобретенияThe basis of the invention is the task to increase the level of air heating, which in turn will increase the efficiency of the boiler, as well as to reduce the generation of nitrogen oxides in the furnace of the boiler. Disclosure of invention
Поставленная задача решается тем, что в горелочном устройстве для топки котла, содержащем воздушную трубу с завихрителем, образующую корпус горелки, внутри воздушной трубы по оси установлен тошивоподающий узел, а также содержащем газовоздушньш эжектор, активное сопло которого соединено с воздуховодом холодного воздуха от вентилятора, а пассивное сопло соединено с топкой котла, согласно изобретения гшовоздушньiй эжектор расположен вертикально относительно корпуса горелки и Q соединен непосредственно с воздушной трубой.The problem is solved in that in the burner device for the furnace of the boiler, containing an air pipe with a swirl, forming a burner body, a sickle-feeding unit is installed along the axis along the axis of the pipe, as well as containing a gas-air ejector, the active nozzle of which is connected to the cold air duct from the fan, and the passive nozzle is connected to the boiler furnace, according to the invention, the air-ejector is erected vertically relative to the burner body and Q is connected directly to the air pipe.
Вертикальная компоновка эжектора относительно корпуса горелки позволяет исключить из конструкции горелки переходной воздуховод, что существенно снижает сопротивление воздушного тракта за эжектором и увеличивает коэффициент эжекции. За счет5 повышения коэффициента эжекции повышается доля продуктов сгорания в смеси, что обеспечивает повышение температуры в смеси и снижение генерации оксидов азота.The vertical layout of the ejector relative to the burner body eliminates the transitional duct from the burner design, which significantly reduces the resistance of the air path behind the ejector and increases the ejection coefficient. Due to the increase in the ejection coefficient, the proportion of combustion products in the mixture increases, which ensures an increase in temperature in the mixture and a decrease in the generation of nitrogen oxides.
Краткое описание чертежейBrief Description of the Drawings
На фиг. 1 приведена схема горелочного устройства, в разрезе, вид спереди; на фиг. 2 - горелочное устройство, вид сбоку.In FIG. 1 shows a diagram of a burner device, in section, a front view; in FIG. 2 - burner device, side view.
Горелочное устройство для топки котла содержит воздушную трубу 1 с завихрителем 2, образующую корпус горелки, по оси воздушной трубы установлен тошшвоподающий узел 3. Воздушная труба 1 присоединена к выходной части диффузора 4 газовоздушного эжектора 5, пассивное сопло 6 которого присоединено к топке 7, а
активное сопло 8, - к трубопроводу подачи воздуха от вентиляторов котла.The burner device for the boiler furnace contains an air pipe 1 with a swirler 2, forming a burner body, along the axis of the air pipe a nauseous supply unit 3 is installed. Air pipe 1 is connected to the outlet of the diffuser 4 of the gas-air ejector 5, the passive nozzle 6 of which is connected to the furnace 7, and active nozzle 8, - to the air supply pipe from the boiler fans.
Вариант осуществления изобретения Жидкое или газообразное топливо поступает через топливоподающий узел 3 в топку 7 котла. Весь поток воздуха в количестве необходимом для сжигания топлива подводится к активному соплу 8 газовоздушного эжектора 5. За счет энергии закрученной струи воздуха из топки 7 котла через пассивное сопло 6 в эжектор 5 подсасываются горячие газообразные продукты сгорания топлива. В диффузоре 4 поток холодного воздуха смешивается с потоком горячих продуктов сгорания топлива, и образовавшаяся смесь поступает в воздушную трубу 1 горелочного устройства и далее, через завыхритель 2, в топку 7 котла. с целью увеличения коэффициента эжекции, а следовательно и температуры подогрева воздуха до 140-160° С в предлагаемой конструкции горелочного устройства использована вертикальная компоновка эжектора 5 относительно корпуса горелки, что позволяет снизить сопротивление воздушного тракта за эжектором до минимально возможного значения, чем достигается увеличение коэффициента эжекции до 20%, против 10-12% у прототипа.An embodiment of the invention Liquid or gaseous fuel enters through the fuel supply unit 3 into the furnace 7 of the boiler. The entire air flow in the amount necessary for burning fuel is supplied to the active nozzle 8 of the gas-air ejector 5. Due to the energy of the swirling air stream from the furnace 7 of the boiler, hot gaseous products of fuel combustion are sucked into the ejector 5 through the passive nozzle 6. In the diffuser 4, a stream of cold air is mixed with a stream of hot products of fuel combustion, and the resulting mixture enters the air pipe 1 of the burner device and then, through a swirl 2, into the furnace 7 of the boiler. in order to increase the ejection coefficient, and therefore the temperature of the air heating to 140-160 ° C, the vertical design of the ejector 5 relative to the burner body is used in the proposed design of the burner device, which allows to reduce the resistance of the air duct behind the ejector to the minimum possible value, thereby increasing the ejection coefficient up to 20%, against 10-12% of the prototype.
Указанный уровень содержания продуктов сгорания топлива в смеси газ-воздух обеспечивает, кроме существенного улучшения экономических показателей работы котла, снижении выбросов NO приблизительно в 2 раза, снижение выбросов сажи с 0,43 г/м3 до 0,00021 г/м3 .
Промышленная применимостьThe indicated level of the content of fuel combustion products in the gas-air mixture provides, in addition to a significant improvement in the economic performance of the boiler, a reduction in NO emissions of approximately 2 times, and a reduction in soot emissions from 0.43 g / m 3 to 0,00021 g / m 3 . Industrial applicability
Предлагаемое горелочное устройство может использоваться для сжигания топлива в топках промышленных паровых и водогрейных котлов, не оборудованных воздухоподогревателями. По данным испытания горелочное устройство обеспечивает увеличениеThe proposed burner device can be used to burn fuel in the furnaces of industrial steam and hot water boilers that are not equipped with air heaters. According to test data, the burner device provides an increase
КПД котла, работающего на мазуте, на ~ 4%.
The efficiency of a fuel oil boiler is ~ 4%.
Claims
ФОРМУЛА ИЗОБРЕТЕНИЯCLAIM
Горелочное устройство для топки котла, содержащее воздушную трубу с завихрителем, образующую корпус горелки, внутри воздушной трубы по оси установлен топливоподающий узел, а также содержащее газовоздушный эжектор, активное сопло которого соединено с воздуховодом холодного воздуха от вентилятора, а пассивное сопло соединено с топкой котла, отличающееся тем, что газовоздушный эжектор расположен вертикально относительно корпуса горелки и соединен непосредственно с воздушной трубой.
A burner device for a boiler furnace, containing an air pipe with a swirl, forming a burner body, a fuel supply unit is installed inside the air pipe along the axis, and also contains a gas-air ejector, the active nozzle of which is connected to the cold air duct from the fan, and the passive nozzle is connected to the boiler furnace, characterized in that the gas-air ejector is located vertically relative to the burner body and is connected directly to the air pipe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/UA2004/000076 WO2006049588A1 (en) | 2004-11-03 | 2004-11-03 | Burner device for boiler furnace |
| UAA200507343A UA80736C2 (en) | 2004-11-03 | 2005-07-25 | Burner unit for boiler furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/UA2004/000076 WO2006049588A1 (en) | 2004-11-03 | 2004-11-03 | Burner device for boiler furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006049588A1 true WO2006049588A1 (en) | 2006-05-11 |
Family
ID=36319467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/UA2004/000076 WO2006049588A1 (en) | 2004-11-03 | 2004-11-03 | Burner device for boiler furnace |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2006049588A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1105728A1 (en) * | 1983-04-25 | 1984-07-30 | Предприятие "Южтехэнерго" Производственного Объединения По Наладке,Совершенствованию Технологии И Эксплуатации Электростанций И Сетей "Союзтехэнерго" | Furnace burner device |
| SU1437616A1 (en) * | 1987-02-27 | 1988-11-15 | Московский энергетический институт | System for recirculating gases in furnace arrangement |
| EP0374423A2 (en) * | 1988-12-20 | 1990-06-27 | John Zink Gmbh | Atmospheric burner |
| SU1728581A1 (en) * | 1990-02-09 | 1992-04-23 | Государственный Проектный Институт "Харьковский Сантехпроект" | Method of burning gaseous fuel |
| GB2259567A (en) * | 1991-09-11 | 1993-03-17 | Mark Iv Transportation Tech | Boiler with low NOX combustion of gaseous fuels |
-
2004
- 2004-11-03 WO PCT/UA2004/000076 patent/WO2006049588A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1105728A1 (en) * | 1983-04-25 | 1984-07-30 | Предприятие "Южтехэнерго" Производственного Объединения По Наладке,Совершенствованию Технологии И Эксплуатации Электростанций И Сетей "Союзтехэнерго" | Furnace burner device |
| SU1437616A1 (en) * | 1987-02-27 | 1988-11-15 | Московский энергетический институт | System for recirculating gases in furnace arrangement |
| EP0374423A2 (en) * | 1988-12-20 | 1990-06-27 | John Zink Gmbh | Atmospheric burner |
| SU1728581A1 (en) * | 1990-02-09 | 1992-04-23 | Государственный Проектный Институт "Харьковский Сантехпроект" | Method of burning gaseous fuel |
| GB2259567A (en) * | 1991-09-11 | 1993-03-17 | Mark Iv Transportation Tech | Boiler with low NOX combustion of gaseous fuels |
Non-Patent Citations (1)
| Title |
|---|
| GUT F E ET AL: "Gorelka dlya zhidkogo I gazoobraznogo topliva s retsirkulyatsionnym podogrevom vozdukha.", ENERGETIK., no. 10, 1980, pages 13 - 15 * |
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