CN104235877B - A kind of pulverized coal firing boiler gas burner and control method thereof - Google Patents
A kind of pulverized coal firing boiler gas burner and control method thereof Download PDFInfo
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- CN104235877B CN104235877B CN201410450666.7A CN201410450666A CN104235877B CN 104235877 B CN104235877 B CN 104235877B CN 201410450666 A CN201410450666 A CN 201410450666A CN 104235877 B CN104235877 B CN 104235877B
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Abstract
The present invention discloses a kind of pulverized coal firing boiler gas burner and control method thereof, comprise burner, first-stage firing chamber and burner control system, it is characterised in that: air passageways, air mixture pipe and the coal dust airduct that burner comprises combustion-supporting tracheae, be positioned at the hollow tube in burner axis direction is connected with described combustion-supporting tracheae wind; The front end of coal dust airduct connects first-stage firing chamber; The rear end of burner is provided with natural gas tube, gas pipe and connects the gas mixing chamber of natural gas tube and gas pipe; Controller for gas, coal dust control device, Sweet natural gas control device, gas controller and compressed air control apparatus are electrically connected burner control system with helping; Usefulness of the present invention is: simple and reasonable, ignition effectiveness height and stablize, prevent combustion wall slagging scorification, ablation, without oil solar term, effectively avoid catastrophic failure.
Description
Technical field
The present invention relates to boiler combustion device field, it is specifically related to a kind of pulverized coal firing boiler gas burner and control method thereof.
Background technology
At present, when boiler equipment often adopts special oil gun to spray heavy oil to burner hearth when starting operation or pole underrun, it may also be useful to high energy igniter pilot fuel, fuel oil is firing coal-dust again, owing to lighting a fire from cold oven-like state, this kind of mode ignition effectiveness is not high, and oil consumption is huge. In order to reach fuel-economizing or the object without oil, research uses the burner such as micro-oil, few oil, plasma. Utilize Sweet natural gas can also reach the object without oil as pilot fuel, tradition based on the pulverized coal firing boiler startup sparking mode of natural gas burner is: first light gas burner with priming bar, again with this burner firing coal-dust, Sweet natural gas belongs to high heating value combustion gas, and such burner gas consumption consumes high at present. Fuel gas with low heat value, such as blast furnace gas, is the byproduct in iron manufacturing process, and calorific value is lower, easy coking of burning, and flame stability is poor, if but be not used, environment can be caused serious harm. In addition, huge catastrophic failure is very easily caused when gas concentration reaches limits of explosion.
Conventional boiler burner has driving and reversing mechanism, namely need runtime system to send instruction and oil (gas) rifle or priming bar are put in designated area, this type of expanding-contracting action needs the Pneumatic components such as air driver, travel switch, solenoid electric valve and other annexes to assist, and the costs such as complicated in mechanical structure, device fabrication, maintenance, installation, debugging are all very high.
Therefore, design that a kind of structure is simple, ignition effectiveness height, flame stabilization, without oil, economize on gas and there is the portfire preventing catastrophic failure very necessary.
Summary of the invention
For solving the deficiency of existing coal powder fired boiler burner, it is an object of the invention to provide a kind of pulverized coal firing boiler gas burner and control method thereof, utilize the mixed gas of gas-firing and low-heat value gas to save high heat value gas, and prevent that slagging scorification, structure are simple, ignition effectiveness height, flame stabilization.
In order to realize above-mentioned target, the present invention adopts following technical scheme: a kind of pulverized coal firing boiler gas burner and control method thereof, comprise burner, first-stage firing chamber and burner control system, it is characterised in that: described burner comprises the combustion-supporting tracheae being connected on burner outer wall, the hollow tube that is positioned at burner axis direction, outer air passageways, the air mixture pipe being positioned at outside described air passageways and the coal dust airduct being positioned at outside described air mixture pipe being connected with described combustion-supporting tracheae wind that be positioned at described hollow tube; The front end of described coal dust airduct connects described first-stage firing chamber; The rear end of described burner is provided with natural gas tube, gas pipe and connects the gas mixing chamber of described natural gas tube and gas pipe; Described burner control system is electrically connected with the compressed air control apparatus helping controller for gas, be positioned at the coal dust control device of described coal dust airduct inlet end, the Sweet natural gas control device being positioned at described natural gas tube inlet end, the gas controller being positioned at described gas pipe inlet end and being positioned at compressed air pipe inlet end being positioned at described combustion-supporting air pipe inlet end.
Aforesaid a kind of pulverized coal firing boiler gas burner, it is characterized in that: described air mixture pipe comprises the air mixture pipe front end that the air mixture pipe rear end being connected with described gas mixing chamber is connected with described air mixture pipe rear end, the internal diameter of described air mixture pipe front end is less than described air mixture pipe back end inside diameter.
Aforesaid a kind of pulverized coal firing boiler gas burner, is characterized in that: be provided with support bar between described burner outer wall and the described coal dust airduct in burner.
Aforesaid a kind of pulverized coal firing boiler gas burner, is characterized in that: described in be positioned at burner coal dust airduct front end be provided with Pulverized Coal Concentration pipe, the rear end of described Pulverized Coal Concentration pipe is provided with Pulverized Coal Concentration device.
Aforesaid a kind of pulverized coal firing boiler gas burner, is characterized in that: described air passageways front end is provided with flash-back preventer, and described flash-back preventer is wire ball or the mutual apertured metal sheet of superposition.
Aforesaid a kind of pulverized coal firing boiler gas burner, is characterized in that: the front end of described first-stage firing chamber, the coal dust airduct being positioned at burner and Pulverized Coal Concentration pipe are provided with the double wall of hollow, forms concave shape air cavity, and inwall is provided with some pores; It is provided with compressed air pipe outside described first-stage firing chamber.
Aforesaid a kind of pulverized coal firing boiler gas burner, it is characterized in that: described Sweet natural gas control device and gas controller comprise the under meter, flow control valve, manual shut-off valve, electrical ball valve, exhaust-valve and the spark arrester that connect successively respectively, and described under meter, flow control valve, electrical ball valve and exhaust-valve are electrically connected with described burner control system respectively.
Aforesaid a kind of pulverized coal firing boiler gas burner, it is characterized in that: described coal dust control device, help controller for gas and compressed air control apparatus to comprise manual shut-off valve and electrical ball valve respectively, described electrical ball valve is electrically connected with described burner control system respectively.
Aforesaid a kind of pulverized coal firing boiler gas burner, is characterized in that: the front end of described air mixture pipe is provided with some air mixture production wells.
Aforesaid a kind of pulverized coal firing boiler gas burner, is characterized in that: place the lighter for ignition being electrically connected with burner control system in described hollow tube; Described hollow tube places flame detecting device by flame side, and described flame detecting device is electrically connected with burner control system.
A control method for pulverized coal firing boiler gas burner, comprising:
Burner control system controls to open combustion-supporting tracheae automatically, utilizes air purge burner and the first-stage firing chamber of combustion-supporting tracheal strips, emptying gas mixture wherein;
During igniting, burner control system controls to open coal dust airduct, natural gas tube and gas pipe automatically, and air mixture lighted by the lighter for ignition in control hollow tube;
Monitoring flame situation by flame detecting device, when flame is less, burner control system is control flow check adjustable valve increasing gas discharge respectively, reduces low calorific value coal airshed, stationary flame; When, after flame stabilization, control flow check adjustable valve reduces gas discharge, strengthen low calorific value coal airshed; When, after igniting flame extinguishes, the electrical ball valve of control Sweet natural gas control device and gas controller closes gas pipeline automatically;
When needs overhaul gas pipeline, utilize residual gas in the exhaust-valve emptying pipe in pipeline.
The control method of aforesaid a kind of pulverized coal firing boiler gas burner, it is characterized in that: automatically control compressed air control apparatus by burner control system, time opening compressed air pipe, removes the slagging scorification in burner front end and single-stage combustion chamber interior walls by pressurized air and concave shape air cavity.
The useful effect that the present invention reaches: utilizing the gas mixture body of the Sweet natural gas of high heating value and low heat value as combustion gas, combustion gas lighted by set-point firearm in hollow tube, and then the coal dust lighted in evaporating pipe, then the coal dust of single-stage combustion indoor of igniting; Utilize the real-time flame detection intensity of flame observation device, by burner control system adjustment of combustion gas flow; Slagging scorification is prevented by concave shape air cavity and compressed air pipe. Present configuration advantages of simple, ignition effectiveness height and stablize, prevent combustion wall slagging scorification, ablation, without oil solar term, effectively avoid catastrophic failure.
Accompanying drawing explanation
Fig. 1 is the structural representation of this burner;
Fig. 2 is burner head cross sectional representation;
Fig. 3 is burner rear end cross sectional representation;
The implication of Reference numeral in figure:
1-burner, 2-first-stage firing chamber, 3-burner control system, the combustion-supporting tracheae of 4-, 5-coal dust airduct, 6-air mixture pipe rear end, 7-air mixture pipe front end, 8-hollow tube, 9-flash-back preventer, 10 support bars, 11-compressed air pipe, 12-concave shape air cavity, 13-Pulverized Coal Concentration device, 14-natural gas tube, 15-gas pipe, 16-Sweet natural gas control device, 17-gas controller, 18-coal dust control device, 19-helps controller for gas, 20-air passageways, 21 Pulverized Coal Concentration pipes, 22-burner outer wall, 23-gas mixing chamber, 24-air mixture production well, 25-compressed air control apparatus.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described. Following examples are only for clearly illustrating the technical scheme of the present invention, and can not limit the scope of the invention with this.
A kind of pulverized coal firing boiler gas burner, comprises burner 1, first-stage firing chamber 2 and burner control system 3.
As shown in Figure 1, burner 1 comprise the combustion-supporting tracheae 4 being connected on burner outer wall 22, the hollow tube 8 that is positioned at burner 1 axis direction, outer air passageways 20, the air mixture pipe being positioned at outside air passageways 20 and the coal dust airduct 5 being positioned at outside air mixture pipe being connected with combustion-supporting tracheae 4 wind that be positioned at hollow tube 8; Coal dust airduct 5 front end connects first-stage firing chamber 2; The rear end of burner 1 is provided with natural gas tube 14, gas pipe 15 and connects the gas mixing chamber 23 of natural gas tube 14 and gas pipe 15;
Air mixture pipe comprises the air mixture pipe front end 7 that the air mixture pipe rear end 6 being connected with gas mixing chamber 23 is connected with air mixture pipe rear end 6, and the internal diameter of air mixture pipe front end 7 is less than air mixture pipe rear end 6 internal diameter.
Support bar 10 it is provided with between burner outer wall 22 and the coal dust airduct 5 in burner.
Coal dust airduct 5 front end being positioned at burner is provided with Pulverized Coal Concentration pipe 21, and the rear end of Pulverized Coal Concentration pipe 21 is provided with Pulverized Coal Concentration device 13, and this Pulverized Coal Concentration device 13 plays support fixed action simultaneously.
Air passageways 2 front end is provided with flash-back preventer 9, and flash-back preventer 9 is wire ball or the mutual apertured metal sheet of superposition, as shown in Figure 2.
The front end of first-stage firing chamber 2, the coal dust airduct 5 being positioned at burner and Pulverized Coal Concentration pipe 21 are provided with the double wall of hollow, it is provided with between the middle part of the coal dust airduct 5 in burner and the rear end of Pulverized Coal Concentration pipe 21 and the tracheae that above-mentioned hollow double wall is connected, the gentle pipe of above-mentioned double wall forms concave shape air cavity 12, and inwall is provided with some pores, the diameter of this pore is 20 microns to 1 millimeter, can prevent larger particles from falling into inwall, outside described first-stage firing chamber 2, be provided with compressed air pipe 11.
The leading exterior surface that the front end of air mixture pipe is provided with some air mixture pipes is provided with some air mixture production wells 24, and this pore is evenly distributed on the front end of gas mixture gas line, as shown in Figure 2.
It is provided with in hollow tube 8 and the lighter for ignition that burner control system 3 is electrically connected, this lighter for ignition can directly be placed in hollow tube, it is not necessary to complicated flexible mechanism, owing to lighter for ignition is not directly in high temperature combustion zone, therefore lighter for ignition is not easily ablated, simplifies the structure; Hollow tube 8 places flame detecting device by flame side, and described flame detecting device is electrically connected with burner control system 3.
Fig. 3 is burner 1 rear end cross sectional representation, contributes to better understanding burner internal structure.
Burner control system 3 is electrically connected with the compressed air control apparatus 25 helping controller for gas 19, be positioned at the coal dust control device 18 of coal dust airduct 5 inlet end, be positioned at the Sweet natural gas control device 16 of natural gas tube 14 inlet end, be positioned at the gas controller 17 of gas pipe 15 inlet end and being positioned at compressed air pipe 11 inlet end being positioned at combustion-supporting tracheae 4 inlet end.
Sweet natural gas control device 16 and gas controller 17 comprise the under meter, flow control valve, manual shut-off valve, electrical ball valve, exhaust-valve and the spark arrester that connect successively respectively, and described under meter, flow control valve, electrical ball valve and exhaust-valve are electrically connected with burner control system 3 respectively. Manual shut-off valve is used to Artificial Control, can dual ensure in emergency circumstances quick acting switching-off gas supply, it is possible to for situations such as manual maintenance. Sweet natural gas and gas controller ingress are also provided with filtration unit, and in order to the impurity in filtering Sweet natural gas and coal gas, preventing blocking burner air mixture production well 24 affects combustion instability. It is 3.3 �� 10 that combustion gas enters the rated flow before control device4Nm3/ h, temperature is 3 ��-36 ��, and pressure is 0.35Mpa, and flow control valve is used for regulating the combustion gas flow entering air mixture pipe; The residual gas that exhaust-valve is used in emptying burner tube, is convenient to maintenance.
Coal dust control device 18, helping controller for gas 19 and compressed air control apparatus 25 to comprise manual shut-off valve and electrical ball valve respectively, its electrical ball valve is electrically connected with burner control system 3 respectively.
The control method of pulverized coal firing boiler gas burner:
Burner control system 3 controls to open combustion-supporting tracheae 4 automatically, utilizes the air purge burner 1 in combustion-supporting tracheae 4 and first-stage firing chamber 2, emptying gas mixture wherein;
During igniting, burner control system 3 controls to open coal dust airduct 5, natural gas tube 14 and gas pipe 15 automatically, and air mixture lighted by the lighter for ignition in control hollow tube 8;
Monitoring flame situation by flame detecting device, when flame is less, burner control system 3 is control flow check adjustable valve increasing gas discharge respectively, reduces low calorific value coal airshed, stationary flame; When, after flame stabilization, control flow check adjustable valve reduces gas discharge, strengthen low calorific value coal airshed; When, after igniting flame extinguishes, the electrical ball valve of control Sweet natural gas control device 16 and gas controller 17 closes gas pipeline automatically, can effectively avoid catastrophic failure to occur.
When needs overhaul gas pipeline, utilize residual gas in the exhaust-valve emptying pipe in pipeline.
Automatically control compressed air control apparatus 25 by burner control system 3, time opening compressed air pipe 11, utilize pressurized air and concave shape air cavity 12 to remove the slagging scorification on burner 1 front end and first-stage firing chamber 2 inwall.
Utilize the gas mixture body of the Sweet natural gas of high heating value and low heat value as combustion gas, effectively consume the coal gas of low heat value, save Sweet natural gas consumption, and ensure that the stability of flame; In hollow tube, combustion gas lighted by set-point firearm, and then the coal dust lighted in evaporating pipe, then the coal dust of single-stage combustion indoor of igniting; Utilize the real-time flame detection intensity of flame observation device, by burner control system adjustment of combustion gas flow; Slagging scorification is prevented by concave shape air cavity and compressed air pipe. Present configuration advantages of simple, ignition effectiveness height and stablize, prevent combustion wall slagging scorification, ablation, without oil solar term, effectively avoid catastrophic failure.
The above is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also making some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (11)
1. a pulverized coal firing boiler gas burner, comprise burner (1), first-stage firing chamber (2) and burner control system (3), it is characterized in that: described burner (1) comprises the combustion-supporting tracheae (4) being connected on burner outer wall (22), it is positioned at the hollow tube (8) in burner (1) axis direction, it is positioned at the air passageways (20) that described hollow tube (8) is connected with described combustion-supporting tracheae (4) wind outward, the coal dust airduct (5) being positioned at the outer air mixture pipe of described air passageways (20) and be positioned at outside described air mixture pipe, the front end of described coal dust airduct (5) connects described first-stage firing chamber (2), the rear end of described burner (1) is provided with natural gas tube (14), gas pipe (15) and connects the gas mixing chamber (23) of described natural gas tube (14) and gas pipe (15), described burner control system (3) helps controller for gas (19) with being positioned at described combustion-supporting tracheae (4) inlet end, it is positioned at the coal dust control device (18) of described coal dust airduct (5) inlet end, it is positioned at the Sweet natural gas control device (16) of described natural gas tube (14) inlet end, the gas controller (17) being positioned at described gas pipe (15) inlet end and the compressed air control apparatus (25) being positioned at compressed air pipe (11) inlet end electrical connection, it is provided with in described hollow tube (8) and the lighter for ignition that burner control system (3) is electrically connected, described hollow tube (8) places flame detecting device by flame side, and described flame detecting device is electrically connected with burner control system (3), described compressed air pipe (11) is positioned on the outer wall of first-stage firing chamber (2), described gas mixing chamber (23) is connected with air mixture pipe.
2. a kind of pulverized coal firing boiler gas burner according to claim 1, it is characterized in that: described air mixture pipe comprises the air mixture pipe front end (7) that the air mixture pipe rear end (6) being connected with described gas mixing chamber (23) is connected with described air mixture pipe rear end (6), the internal diameter of described air mixture pipe front end (7) is less than described air mixture pipe rear end (6) internal diameter.
3. a kind of pulverized coal firing boiler gas burner according to claim 1, is characterized in that: be provided with support bar (10) between described burner outer wall (22) and the described coal dust airduct (5) being positioned at burner.
4. a kind of pulverized coal firing boiler gas burner according to claim 1, it is characterized in that: described in be positioned at burner coal dust airduct (5) front end be provided with Pulverized Coal Concentration pipe (21), the rear end of described Pulverized Coal Concentration pipe (21) is provided with Pulverized Coal Concentration device (13).
5. a kind of pulverized coal firing boiler gas burner according to claim 2, it is characterized in that: described air passageways (20) front end is provided with flash-back preventer (9), described flash-back preventer (9) is wire ball or the mutual apertured metal sheet of superposition.
6. a kind of pulverized coal firing boiler gas burner according to claim 1, it is characterized in that: the front end of described first-stage firing chamber (2), the coal dust airduct (5) being positioned at burner and Pulverized Coal Concentration pipe (21) are provided with the double wall of hollow, form concave shape air cavity (12), and inwall is provided with some pores; Compressed air pipe (11) it is provided with outside described first-stage firing chamber (2).
7. a kind of pulverized coal firing boiler gas burner according to claim 1, it is characterized in that: described Sweet natural gas control device (16) and gas controller (17) comprise the under meter, flow control valve, manual shut-off valve, electrical ball valve, exhaust-valve and the spark arrester that connect successively respectively, and described under meter, flow control valve, electrical ball valve and exhaust-valve are electrically connected with described burner control system (3) respectively.
8. a kind of pulverized coal firing boiler gas burner according to claim 1, it is characterized in that: described coal dust control device (18), help controller for gas (19) and compressed air control apparatus (25) to comprise manual shut-off valve and electrical ball valve respectively, described electrical ball valve is electrically connected with described burner control system (3) respectively.
9. a kind of pulverized coal firing boiler gas burner according to claim 1, is characterized in that: be arranged with some air mixture production wells (24) outside the front end of described air mixture pipe.
10. a control method for pulverized coal firing boiler gas burner, comprising:
Burner control system (3) controls to open combustion-supporting tracheae (4) automatically, utilizes the air purge burner (1) in combustion-supporting tracheae (4) and first-stage firing chamber (2), emptying gas mixture wherein;
During igniting, burner control system (3) controls to open coal dust airduct (5), natural gas tube (14) and gas pipe (15) automatically, and air mixture lighted by the lighter for ignition in control hollow tube (8);
Monitoring flame situation by flame detecting device, when flame is less, burner control system (3) is control flow check adjustable valve increasing gas discharge respectively, reduces low calorific value coal airshed, stationary flame; When, after flame stabilization, control flow check adjustable valve reduces gas discharge, strengthen low calorific value coal airshed; When, after igniting flame extinguishes, the electrical ball valve of control Sweet natural gas control device (16) and gas controller (17) closes gas pipeline automatically;
When needs overhaul gas pipeline, utilize residual gas in the exhaust-valve emptying pipe in pipeline.
The control method of 11. a kind of pulverized coal firing boiler gas burners according to claim 10, it is characterized in that: automatically control compressed air control apparatus (25) by burner control system (3), time opening compressed air pipe (11), removes the slagging scorification on burner (1) front end and first-stage firing chamber (2) inwall by pressurized air and concave shape air cavity (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410450666.7A CN104235877B (en) | 2014-09-05 | 2014-09-05 | A kind of pulverized coal firing boiler gas burner and control method thereof |
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| CN201410450666.7A CN104235877B (en) | 2014-09-05 | 2014-09-05 | A kind of pulverized coal firing boiler gas burner and control method thereof |
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| CN104235877B true CN104235877B (en) | 2016-06-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06272828A (en) * | 1993-03-24 | 1994-09-27 | Ishikawajima Harima Heavy Ind Co Ltd | Ignition gas burner |
| US6345979B1 (en) * | 1997-11-25 | 2002-02-12 | Maxon Corporation | Oxygen-fuel pilot with integral ignition |
| CN2881368Y (en) * | 2006-03-01 | 2007-03-21 | 广州市优华能源技术有限公司 | Multipurpose burner |
| CN201129726Y (en) * | 2007-10-18 | 2008-10-08 | 朴显泽 | Mixed combusting device capable of utilizing two combustible gases |
| CN201462854U (en) * | 2009-05-22 | 2010-05-12 | 宝山钢铁股份有限公司 | Dual-purpose combustion nozzle of mixed gas and natural gas for heating furnace and combustion system thereof |
| CN204084455U (en) * | 2014-09-05 | 2015-01-07 | 南京工程学院 | A kind of pulverized-coal fired boiler gas burner |
-
2014
- 2014-09-05 CN CN201410450666.7A patent/CN104235877B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06272828A (en) * | 1993-03-24 | 1994-09-27 | Ishikawajima Harima Heavy Ind Co Ltd | Ignition gas burner |
| US6345979B1 (en) * | 1997-11-25 | 2002-02-12 | Maxon Corporation | Oxygen-fuel pilot with integral ignition |
| CN2881368Y (en) * | 2006-03-01 | 2007-03-21 | 广州市优华能源技术有限公司 | Multipurpose burner |
| CN201129726Y (en) * | 2007-10-18 | 2008-10-08 | 朴显泽 | Mixed combusting device capable of utilizing two combustible gases |
| CN201462854U (en) * | 2009-05-22 | 2010-05-12 | 宝山钢铁股份有限公司 | Dual-purpose combustion nozzle of mixed gas and natural gas for heating furnace and combustion system thereof |
| CN204084455U (en) * | 2014-09-05 | 2015-01-07 | 南京工程学院 | A kind of pulverized-coal fired boiler gas burner |
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