CN102679348A - Control mode of premixed-type secondary combustor - Google Patents
Control mode of premixed-type secondary combustor Download PDFInfo
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- CN102679348A CN102679348A CN2011100623687A CN201110062368A CN102679348A CN 102679348 A CN102679348 A CN 102679348A CN 2011100623687 A CN2011100623687 A CN 2011100623687A CN 201110062368 A CN201110062368 A CN 201110062368A CN 102679348 A CN102679348 A CN 102679348A
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Abstract
The invention discloses a control mode of a premixed-type secondary combustor. The invention aims to provide a scientific and safe combustor control mode. The control mode disclosed by the invention comprises the following steps that: firstly, a combustion-supporting fan is started up, and combustion-supporting air purges fuel gas which is possibly remained in a combustion-supporting air pipeline, a premixer, a combustor and a hearth; secondly, a primary air control valve and a secondary air control valve on the combustion-supporting air pipeline are regulated, thus the combustion-supporting air is divided into two parts to be conveyed into the premixer and the main body of the combustor; then a fuel gas valve is opened, the fuel gas is conveyed into the premixer through a fuel gas pipeline, is mixed with primary air in the cavity of the premixer, and is conveyed into a premixing pipe through a premixing connecting pipe; the mixed gas is output by a combustion fire nozzle and mixed with secondary air, and the secondary air plays roles in combustion fire nozzle cooling and secondary compensation combustion supporting; and finally the mixed premixing fuel gas is ignited through a high-pressure ignition device or an artificial method. The control mode of the premixed-type secondary combustor provided by the invention is mainly applied to the regulation of premixing combustion equipment of a kiln.
Description
Technical field
The present invention relates to a kind of control mode, relate in particular to a kind of control mode of premixed secondary burner.
Background technology
In industrial circle, use in kiln that combustion gas fires product and melting non-ferrous metal and the holding furnace and use the mode of atmospheric combustion (diffusion type burning) to carry out usually, its weak point is that diffusion type burns normally combustion gas and combustion air when burning, and is mixed while burning; Because of its incorporation time weak point; Often make combustion gas and combustion air can not fully mix just burning, caused incomplete combustion, if will make burning fully; Just need to strengthen combustion-supporting air quantity, promptly strengthen coefficient of excess air.And use premixed burning; Promptly before burning, be pre-mixed combustion gas and combustion air, the space and the time of premix is provided, need not strengthen coefficient of excess air; The burning of combustion gas not only fully and ignition temperature and efficiency of combustion all higher, be combustion technologies a kind of advanced person, energy-saving and emission-reduction.Premixed combustion also has its shortcoming, if use exactly or control improperly, can cause tempering easily, cause the accident, and this also is the basic reason that premixed combustion technology can not large-scale popularization, application on Industrial Stoves.So, grasp and be familiar with the characteristic of premixed combustion, appropriate design, correctly use and control that pre-mixing type combustion apapratus is normal well, trouble free service and operation just seem particularly important.
Summary of the invention
The invention discloses a kind of control mode of premixed secondary burner, control mode a kind of science, safety is provided in order to control premixed secondary burner.
For addressing the above problem, technical solution of the present invention is: a kind of control mode of premixed secondary burner, its mode is: 1) start combustion fan, let combustion air purge the residual combustion gas of possibility in combustion air pipeline, premixed device, burner and the burner hearth.
2) wind control valve on the adjustment combustion air pipeline and secondary wind control valve make combustion air be divided into two parts to be transported to respectively in premixed device and the burner body.
3) burnt gas valve is opened; Combustion gas is transported in the premixed device through gas pipeline and in premixed device, fully mixes with wind and be transported in the premix barrel in the burner body through the premix tube connector, and premixed gas outputs to outside the burner body and with secondary wind through the burning nozzles in premix barrel and mixes once more.
4) through high-voltage ignition device or manual method the premixed gas that mixes is lighted at the burning nozzles place of burner, and, made the burner operate as normal according to the production technology of kiln and the flow and the ratio of operating mode adjustment wind, secondary wind and a combustion gas.
Further, described step 2) make a wind intake account for 25～75% of total intake a wind control valve adjustment, make secondary combustion air input account for 75～25% of total air inflow the adjustment of secondary wind control valve.The ratio intake of finally confirming both according to the manufacturing technique requirent and the operating mode of kiln.
Further, described step 3) adjustment burnt gas valve makes the live load of burner can satisfy the manufacturing technique requirent of kiln, and one time wind plays the premix effect, and secondary wind plays the combustion-supporting and cooling combustion nozzles of compensation.
Further, described step 4) is when fire box temperature reaches technological requirement, and the supply of combustion gas can be controlled increase and decrease automatically according to the thermocouple indicated temperature in the burner hearth and the temperature difference that temperature is set.
The invention has the beneficial effects as follows; Through controlling the unlatching ratio of wind, secondary wind control valve, regulate and distribute the combustion air quantity delivered in premixed device and burner body, make the combustion gas Staged Premixed Combustion; Compare with diffusion flame burner, have tangible effects of energy saving and emission reduction; Secondary wind except compensate combustion-supporting; Also play the cooling combustion nozzles, reduce flame propagation velocity; Thereby reach the purpose that prevents, stops tempering; But make operate as normal and the operation under safety and state of a control of premixed secondary burner, for applying premixed combustion technology and actual contribution has been made in energy-saving and emission-reduction work, thereby reach the object of the invention.
The specific embodiment
Following specific embodiments of the invention is done further explain.
Control mode of the present invention is:
A kind of control mode of premixed secondary burner, its mode is: 1) start combustion fan, let combustion air purge the residual combustion gas of possibility in combustion air pipeline, premixed device, burner and the burner hearth.
2) wind control valve on the adjustment combustion air pipeline and secondary wind control valve make combustion air be divided into two parts to be transported to respectively in premixed device and the burner body.
3) burnt gas valve is opened; Combustion gas is transported in the premixed device through gas pipeline and in premixed device, fully mixes with wind and be transported in the premix barrel in the burner body through the premix tube connector, and premixed gas outputs to outside the burner body and with secondary wind through the burning nozzles in premix barrel and mixes once more.
4) through high-voltage ignition device or manual method the premixed gas that mixes is lighted at the burning nozzles place of burner, and, made the burner operate as normal according to the production technology of kiln and the flow and the ratio of operating mode adjustment wind, secondary wind and a combustion gas.
Described step 2) makes a wind intake account for 25～75% of total intake a wind control valve adjustment, make the secondary wind input account for 75～25% of total intake the adjustment of secondary wind control valve.The ratio intake of finally confirming both according to the manufacturing technique requirent and the operating mode of kiln.
Described step 3) adjustment burnt gas valve makes the live load of burner can satisfy the manufacturing technique requirent of kiln, and one time wind plays the premix effect, and secondary wind plays the combustion-supporting and cooling combustion nozzles of compensation.
In actual adjustment process; At first start combustion fan and with the valve opening on the combustion air pipeline; Let combustion air purge the residual combustion gas of possibility in combustion air pipeline, premixed device, burner and the burner hearth; Clean wind control valve of back adjustment of purging to be confirmed and secondary wind control valve and according to wind of operating mode adjustment of kiln, the flow and the ratio of secondary wind are opened gas valve, and combustion gas is mixed in the cavity of premixed device with a wind; And through the ejection of the burning nozzles on the premix barrel of burner, the combustion gas that light premix with the premixed gas that mixes at the burning nozzles place of burner with high-voltage ignition device or manual method this moment.Adjust the flow and the ratio of wind, secondary wind and a combustion gas once more; Make the live load of burner can satisfy the manufacturing technique requirent of kiln; And operate as normal and operation, according to the manufacturing technique requirent of kiln, pressure working condition, Temperature Distribution in the adjustment kiln burner hearth; Make burner satisfying normal operation under the combustion atmosphere of manufacturing technique requirent, promptly accomplish The whole control, adjustment process.
Claims (4)
1. the control mode of a premixed secondary burner, its mode is: 1) start combustion fan, let combustion air purge maybe be residual in combustion air pipeline, premixed device, burner and the burner hearth combustion gas;
2) wind control valve on the adjustment combustion air pipeline and secondary wind control valve make combustion air be divided into two parts and are transported to respectively in premixed device and the burner body;
3) burnt gas valve is opened; Combustion gas is transported in the premixed device through gas pipeline and in premixed device, fully mixes with wind and be transported in the premix barrel in the burner body through the premix tube connector, and premixed gas outputs to outside the burner body and with secondary wind through the burning nozzles in premix barrel and mixes once more;
4) through high-voltage ignition device or manual method the premixed gas that mixes is lighted at the burning nozzles place of burner, and, made the burner operate as normal according to the flow and the ratio of the operating mode of kiln adjustment wind, secondary wind and a combustion gas;
5) according to the manufacturing technique requirent of kiln, pressure working condition, Temperature Distribution in the adjustment kiln burner hearth make burner satisfy normal operation under the combustion atmosphere of manufacturing technique requirent.
2. control mode according to claim 1; It is characterized in that: described step 2) make the intake of a wind account for 25～75% of total intake a wind control valve adjustment, make the intake of secondary wind account for 75～25% of total intake the adjustment of secondary wind control valve.The ratio intake of finally confirming both according to the manufacturing technique requirent and the operating mode of kiln.
3. control mode according to claim 1; It is characterized in that: described step 3) adjustment burnt gas valve; Make the live load of burner can satisfy the manufacturing technique requirent of kiln, one time wind plays the premix effect, and secondary wind plays the combustion-supporting and cooling combustion nozzles of compensation.
4. control mode according to claim 1 is characterized in that: described step 4) is when fire box temperature reaches technological requirement, and the supply of combustion gas can be controlled increase and decrease automatically according to the thermocouple indicated temperature in the burner hearth and the temperature difference that temperature is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100623687A CN102679348A (en) | 2011-03-15 | 2011-03-15 | Control mode of premixed-type secondary combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100623687A CN102679348A (en) | 2011-03-15 | 2011-03-15 | Control mode of premixed-type secondary combustor |
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| CN102679348A true CN102679348A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100623687A Pending CN102679348A (en) | 2011-03-15 | 2011-03-15 | Control mode of premixed-type secondary combustor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338063A (en) * | 2016-08-27 | 2017-01-18 | 淄博凯雷得汽车零部件有限公司 | Constant-pressure combustion type clean combustor |
| CN108036316A (en) * | 2017-12-07 | 2018-05-15 | 德化县顺尔美工艺品有限公司 | A kind of Pottery Tunnel Calcining Kiln high-speed fuel gas burner |
| CN111237755A (en) * | 2020-01-22 | 2020-06-05 | 北京纪祥节能科技有限公司 | Method for heating by adopting heat storage type combustion system |
| CN111336543A (en) * | 2020-03-06 | 2020-06-26 | 大峘集团有限公司 | Automatic ignition method for sintering flue gas denitration heating furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5318825A (en) * | 1976-08-04 | 1978-02-21 | Kawasaki Steel Corp | Combustion control method for gas fuel in industrial furnace |
| EP0187441A2 (en) * | 1984-09-10 | 1986-07-16 | Exxon Research And Engineering Company | Low NOx premix burner |
| CN2670758Y (en) * | 2003-09-26 | 2005-01-12 | 宝山钢铁股份有限公司 | Covering petroleum liquefied gas burner for stove |
| WO2009017431A1 (en) * | 2007-08-02 | 2009-02-05 | Whisper Tech Limited | Variable thermal output cogeneration system |
| CN201680367U (en) * | 2010-03-15 | 2010-12-22 | 向英 | Fuel conveying mechanism and alcohol-based fuel burner |
-
2011
- 2011-03-15 CN CN2011100623687A patent/CN102679348A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5318825A (en) * | 1976-08-04 | 1978-02-21 | Kawasaki Steel Corp | Combustion control method for gas fuel in industrial furnace |
| EP0187441A2 (en) * | 1984-09-10 | 1986-07-16 | Exxon Research And Engineering Company | Low NOx premix burner |
| CN2670758Y (en) * | 2003-09-26 | 2005-01-12 | 宝山钢铁股份有限公司 | Covering petroleum liquefied gas burner for stove |
| WO2009017431A1 (en) * | 2007-08-02 | 2009-02-05 | Whisper Tech Limited | Variable thermal output cogeneration system |
| CN201680367U (en) * | 2010-03-15 | 2010-12-22 | 向英 | Fuel conveying mechanism and alcohol-based fuel burner |
Non-Patent Citations (1)
| Title |
|---|
| 李萍等: "预混式二次燃烧系统的节能减排效果", 《中国陶瓷工业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338063A (en) * | 2016-08-27 | 2017-01-18 | 淄博凯雷得汽车零部件有限公司 | Constant-pressure combustion type clean combustor |
| CN106338063B (en) * | 2016-08-27 | 2019-04-02 | 淄博凯雷得汽车零部件有限公司 | The cleaning burner of constant pressure combustion |
| CN108036316A (en) * | 2017-12-07 | 2018-05-15 | 德化县顺尔美工艺品有限公司 | A kind of Pottery Tunnel Calcining Kiln high-speed fuel gas burner |
| CN111237755A (en) * | 2020-01-22 | 2020-06-05 | 北京纪祥节能科技有限公司 | Method for heating by adopting heat storage type combustion system |
| CN111336543A (en) * | 2020-03-06 | 2020-06-26 | 大峘集团有限公司 | Automatic ignition method for sintering flue gas denitration heating furnace |
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Application publication date: 20120919 |