CN202040815U - Natural gas combustion-supporting industrial pulverized coal cyclone combustor - Google Patents
Natural gas combustion-supporting industrial pulverized coal cyclone combustor Download PDFInfo
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- CN202040815U CN202040815U CN2011200590602U CN201120059060U CN202040815U CN 202040815 U CN202040815 U CN 202040815U CN 2011200590602 U CN2011200590602 U CN 2011200590602U CN 201120059060 U CN201120059060 U CN 201120059060U CN 202040815 U CN202040815 U CN 202040815U
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Abstract
A natural gas combustion-supporting industrial pulverized coal cyclone combustor comprises a center air channel, a primary air channel, a direct-flow natural gas channel, an inner cyclone secondary air channel and an outer cyclone secondary air channel which are successively arranged surrounding the outer side surface of an igniting gun from inside to outside in an overlapped manner. The combustor increases temperature field and strengthens radiation heat transfer by the aid of natural gas combustion supporting, and has the advantages of uniform distribution of pulverized coal, high combustion stability, wide coal adaptability and low NOX (nitric oxide) discharge.
Description
Technical field
The utility model relates to a kind of industrial coal burner, is specifically related to the combustion-supporting industrial pulverized coal whirl burning device of a kind of natural gas.
Background technology
After advanced combustion technology such as coal powder light-dark technology and grading combustion technology occurs, turbulent burner not only can highly organized Furnace Aerodynamic Field, produce rational ignition zone breeze airflow CONCENTRATION DISTRIBUTION and the pulverized coal particle time of staying and ignition distance, guarantee smooth combustion, and can reduce NO in a large number
XThe gas discharging.Advantages such as simultaneously, the turbulent burner burning has relative independence, and layout is all relative flexible with adjustment, and the deviation of flue gas temperature of hearth outlet and vapor (steam) temperature is less.Therefore, turbulent burner has obtained using widely on the large-scale power station coal-burning boiler.
But at present the turbulent burner of using still exists postponements of catching fire, colm to catch fire difficulty, combustion instability, low-load combustion-stabilizing ability, slagging scorification seriously and NO in actual motion
XProblems such as discharge capacity exceeds standard.Tracing it to its cause, mainly is because China's steam coal presents the characteristics that coal is changeable, ature of coal is relatively poor.Especially in middle-size and small-size industrial coal powder boiler and industrial furnace or industry kiln, compare with station boiler, furnace cavity is little, and the coal dust time of staying is short, and the coal dust burn-off rate is low, and efficiency of combustion is low; Simultaneously, middle-size and small-size industrial coal powder boiler and industrial furnace or industry kiln, capacity is little, fractional cold is big, and the single layout of burner lacks and ignites mutually, cause the fire box temperature level lower, the steady combustion ability of burner and poor to the adaptive capacity of coal is difficult to the effective and economic burning of tissue.In order to adapt to the changeable and increasingly serious environmental requirement of ature of coal, the coal adaptive capacity of industrial coal powder boiler, low-load combustion-stabilizing ability and low NO
XEmission request improves constantly.
Although also have at present some turbulent burners generally to adopt to strengthen the swirl strength of wind and secondary wind, or a wind outlet installs steady combustion tooth or steady combustion ring additional, or changes technology such as burner outlet shape and improve combustion position.But in the face of the structure particularity of middle-size and small-size industrial coal powder boiler and industrial furnace or industry kiln, existing small and medium-sized industrial coal powder boilers turbulent burner is for adaptability, low-load combustion-stabilizing ability and the low NO of coal
XThe defective of discharging aspect is not still solved well.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists, the industrial pulverized coal whirl burning device that provides a kind of natural gas combustion-supporting is provided the purpose of this utility model, by overlapping successively center wind duct, wind passage, direct current natural gas passage, interior eddy flow secondary air channel and outer eddy flow secondary air channel of being provided with of lateral surface from-inner-to-outer around burning torch, this burner can be combustion-supporting by natural gas, improve the temperature field and strengthen radiant heat transfer, have that coal powder light-dark is evenly distributed, the efficiency of combustion height, combustion stability is good, coal adaptability is wide and low NO
XThe advantage of discharging.
In order to achieve the above object, the technical scheme that the utility model adopted is:
The industrial pulverized coal whirl burning device that a kind of natural gas is combustion-supporting, comprise that right-hand member is the horizontal column burning torch 1 of burning torch mouth, around the lateral surface from-inner-to-outer of burning torch 1 is overlapping successively the horizontal columns ring center wind passage 2 that left side upper surface has center wind inlet 102 is set, left end has wind path 10 of horizontal columns ring-type of a wind inlet 101 of vertical direction bending, left end has the horizontal columns ring-type direct current natural gas passage 3 of the direct current gas inlet 103 of vertical direction, left end has the outer eddy flow secondary air channel 12 of horizontal columns ring-type that eddy flow secondary air channel 11 in the horizontal columns ring-type of interior swirl secondary air inlet 104 of vertical direction and left end have the outer swirl secondary air inlet 105 of vertical direction, and burning torch 1 in addition, center wind duct 2, a wind path 10, direct current natural gas passage 3, the right side in the vertical direction of interior eddy flow secondary air channel 11 and outer eddy flow secondary air channel 12 is mutually concordant.
The right-hand member exit of the right-hand member exit of eddy flow secondary air channel 11 and outer eddy flow secondary air channel 12 is respectively arranged with in described eddy flow secondary air channel enlarging 9 and outer eddy flow secondary air channel enlarging 16 in the horizontal circle of the same horizontal center line axis frustum ring-type with it.
Described direct current natural gas channel outlet 106 is a horizontal circle frustum ring, and the left side of this horizontal circle frustum ring is little and the right side is big, also has in the horizontal circle frustum ring in addition from the horizontal circle band of column of its left side level incision.
Described direct current gas inlet 103 is provided with natural gas quick-break valve 4.
Described direct current natural gas channel outlet 106 places are provided with spark arrester 7.
The horizontal Eight characters frustum ring-type Pulverized Coal Concentration device 5 that same horizontal center line axis is arranged with it is set in described wind path 10, and the left side of this Pulverized Coal Concentration device 5 is little and the right side is big.
A described wind path 10 right-hand member exit is provided with circular tooth shape structure smooth combustion apparatus 15, and this circular tooth shape structure smooth combustion apparatus 15 is a circulus, and this circulus inwall is along the circumferential evenly distributed circular arc column coal-powder steady flame tooth 19 that has more than three at interval.
Be provided with axial adjustable cyclone 6 in the eddy flow secondary air channel 11 in described.
Described outer swirl secondary air 105 ecto-entads that enter the mouth are provided with outer secondary wind successively and transfer windshield plate 14 and tangential adjustable cyclone 13.
By around overlapping successively center wind duct 2, wind path 10, direct current natural gas passage 3, interior eddy flow secondary air channel 11 and the outer eddy flow secondary air channel 12 of being provided with of the lateral surface from-inner-to-outer of burning torch 1, this structure makes this burner by the combustion-supporting raising of natural gas temperature field with strengthen radiant heat transfer, have coal powder light-dark be evenly distributed the efficiency of combustion height, combustion stability is good, coal adaptability is wide and low NO
XThe advantage of discharging.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structure cutaway view of Pulverized Coal Concentration device of the present utility model.
Fig. 3 is the structure half sectional view of direct current natural gas channel outlet of the present utility model.
Fig. 4 is the structural representation of circular tooth shape structure smooth combustion apparatus of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in more detail.
As shown in Figure 1, the industrial pulverized coal whirl burning device that natural gas is combustion-supporting, comprise that right-hand member is the horizontal column burning torch 1 of burning torch mouth, around the lateral surface from-inner-to-outer of burning torch 1 is overlapping successively the horizontal columns ring center wind passage 2 that left side upper surface has center wind inlet 102 is set, left end has wind path 10 of horizontal columns ring-type of a wind inlet 101 of vertical direction bending, left end has the horizontal columns ring-type direct current natural gas passage 3 of the direct current gas inlet 103 of vertical direction, left end has the outer eddy flow secondary air channel 12 of horizontal columns ring-type that eddy flow secondary air channel 11 in the horizontal columns ring-type of interior swirl secondary air inlet 104 of vertical direction and left end have the outer swirl secondary air inlet 105 of vertical direction, and burning torch 1 in addition, center wind duct 2, a wind path 10, direct current natural gas passage 3, the right side in the vertical direction of interior eddy flow secondary air channel 11 and outer eddy flow secondary air channel 12 is mutually concordant.The right-hand member exit of the right-hand member exit of eddy flow secondary air channel 11 and outer eddy flow secondary air channel 12 is respectively arranged with in described eddy flow secondary air channel enlarging 9 and outer eddy flow secondary air channel enlarging 16 in the horizontal circle of the same horizontal center line axis frustum ring-type with it, introduce direct current natural gas passage 3 and import natural gas, because the Flow-rate adjustment of natural gas more flexibly accurately, combustibility is more superior, when boiler load changes, can carry out coal dust, natural gas is adjusted simultaneously, steady combustion under stable operation, the especially underload of assurance burner.Natural gas burns rapidly at burner outlet, consumes certain oxygen, thereby can form the reproducibility zone of anoxic in the part, suppresses fuel type NO
XGeneration, the NO that has produced
XAlso reducible one-tenth N under reducing atmosphere
2, can effectively reduce the NO that produces in the combustion process
XIn addition, the raising of temperature helps the separating out of coal dust volatile matter, burning and the fine grain burning of coal dust, improves efficiency of combustion and fuel availability, adds that combustion-supporting natural gas feeds by the direct current mode, make air-flow have certain rigidity, form the lower slightly transition region of one deck oxygen supply.As shown in Figure 3, described direct current natural gas channel outlet 106 is a horizontal circle frustum ring, and the left side of this horizontal circle frustum ring is little and the right side is big, also has in the horizontal circle frustum ring in addition from the horizontal circle band of column of its left side level incision.Described direct current gas inlet 103 is provided with natural gas quick-break valve 4, and natural gas quick-break valve 4 can cut off combustion-supporting natural gas rapidly, guarantees the safe operation of burner.Described direct current natural gas channel outlet 106 places are provided with spark arrester 7, and spark arrester 7 can play the better buffer action of natural gas, prevent that secondary wind from adding burning too early, makes NO
XThe reducing zone obtains proper extension, more can reduce NO
XDischarging.As shown in Figure 2, the horizontal Eight characters frustum ring-type Pulverized Coal Concentration device 5 that same horizontal center line axis is arranged with it is set in described wind path 10, the left side of this Pulverized Coal Concentration device 5 is little and the right side is big, when such wind carries coal dust by this enrichment facility 5, can be divided into radially Fu Fenliu and poor powder stream, so that close combustion-supporting natural gas side is the high coal powder density district of rich powder, and concentrating of coal dust not only helps catching fire and reducing NO
XDischarging, this zone is owing to natural gas is combustion-supporting, and temperature levels is higher, thereby has formed a high coal powder density high-temperature zone, can effectively improve the steady combustion performance of burner.As shown in Figure 4, a described wind path 10 right-hand member exit is provided with circular tooth shape structure smooth combustion apparatus 15, this circular tooth shape structure smooth combustion apparatus 15 is a circulus, and this circulus inwall is along the circumferential evenly distributed circular arc column coal-powder steady flame tooth 19 that has more than three at interval.Be provided with axial adjustable cyclone 6 in the eddy flow secondary air channel 11 in described.Described outer swirl secondary air 105 ecto-entads that enter the mouth are provided with outer secondary wind successively and transfer windshield plate 14 and tangential adjustable cyclone 13.
Operation principle of the present utility model is: open the natural gas quick-break valve 4 of direct current gas inlet 103 and the secondary wind of outer swirl secondary air inlet 105 and transfer windshield plate 14, a wind inlet 101 by a wind path 10 feeds the air-flow that has coal dust subsequently, and the center wind inlet 102 of center wind duct 2, the interior swirl secondary air inlet 104 of interior eddy flow secondary air channel 11 and the outer swirl secondary air of the outer eddy flow secondary air channel 12 105 bubbling air air-flows that enter the mouth, and the direct current gas inlet 103 by direct current natural gas passage 3 feeds natural gas, form the mixture that the air-flow that has coal dust and natural gas are formed like this in separately exit, firing point firelock 1 is lighted this mixture simultaneously.
By around overlapping successively center wind duct 2, wind path 10, direct current natural gas passage 3, interior eddy flow secondary air channel 11 and the outer eddy flow secondary air channel 12 of being provided with of the lateral surface from-inner-to-outer of burning torch 1, this structure makes this burner by the combustion-supporting raising of natural gas temperature field with strengthen radiant heat transfer, have coal powder light-dark be evenly distributed the efficiency of combustion height, combustion stability is good, coal adaptability is wide and low NO
XThe advantage of discharging.
Claims (9)
1. industrial pulverized coal whirl burning device that natural gas is combustion-supporting, comprise that right-hand member is the horizontal column burning torch (1) of burning torch mouth, it is characterized in that: the horizontal columns ring center wind passage (2) that left side upper surface has center wind inlet (102) is set around the lateral surface from-inner-to-outer of burning torch (1) is overlapping successively, left end has a wind passage of horizontal columns ring-type (10) of a wind inlet (101) of vertical direction bending, left end has the horizontal columns ring-type direct current natural gas passage (3) of the direct current gas inlet (103) of vertical direction, left end has horizontal columns ring-type outer eddy flow secondary air channel (12), the burning torch (1) in addition that eddy flow secondary air channel (11) in the horizontal columns ring-type of interior swirl secondary air inlet (104) of vertical direction and left end have the outer swirl secondary air inlet (105) of vertical direction, center wind duct (2), a wind passage (10), direct current natural gas passage (3), the right side in the vertical direction of interior eddy flow secondary air channel (11) and outer eddy flow secondary air channel (12) is mutually concordant.
2. the industrial pulverized coal whirl burning device that natural gas according to claim 1 is combustion-supporting is characterized in that: the right-hand member exit of the right-hand member exit of eddy flow secondary air channel (11) and outer eddy flow secondary air channel (12) is respectively arranged with eddy flow secondary air channel enlarging (9) and outer eddy flow secondary air channel enlarging (16) in the horizontal circle of the same horizontal center line axis frustum ring-type is arranged with it in described.
3. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: described direct current natural gas channel outlet (106) is horizontal circle frustum ring, the left side of this horizontal circle frustum ring is little and the right side is big, also has in the horizontal circle frustum ring in addition from the horizontal circle band of column of its left side level incision.
4. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: described direct current gas inlet (103) is provided with natural gas quick-break valve (4).
5. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: described direct current natural gas channel outlet (106) locates to be provided with spark arrester (7).
6. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: the horizontal Eight characters frustum ring-type Pulverized Coal Concentration device (5) that same horizontal center line axis is arranged with it is set in described wind passage (10), and the left side of this Pulverized Coal Concentration device (5) is little and the right side is big.
7. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: a described wind passage (10) right-hand member exit is provided with circular tooth shape structure smooth combustion apparatus (15), this circular tooth shape structure smooth combustion apparatus (15) is a circulus, and this circulus inwall is along the circumferential evenly distributed circular arc column coal-powder steady flame tooth (19) that has more than three at interval.
8. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: be provided with axial adjustable cyclone (6) in the eddy flow secondary air channel (11) in described.
9. according to claim 1 or the combustion-supporting industrial pulverized coal whirl burning device of the described natural gas of claim 2, it is characterized in that: described outer swirl secondary air inlet (105) ecto-entad is provided with outer secondary wind successively and transfers windshield plate (14) and tangential adjustable cyclone (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200590602U CN202040815U (en) | 2011-03-09 | 2011-03-09 | Natural gas combustion-supporting industrial pulverized coal cyclone combustor |
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| CN2011200590602U CN202040815U (en) | 2011-03-09 | 2011-03-09 | Natural gas combustion-supporting industrial pulverized coal cyclone combustor |
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| CN2011200590602U Expired - Fee Related CN202040815U (en) | 2011-03-09 | 2011-03-09 | Natural gas combustion-supporting industrial pulverized coal cyclone combustor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116480A (en) * | 2011-03-09 | 2011-07-06 | 西安交通大学 | Industrial pulverized coal swirl combustion system using natural gas for supporting combustion |
| CN102620295A (en) * | 2012-04-13 | 2012-08-01 | 西安康桥能源技术有限责任公司 | Industrial radial concentration dual-air regulation rotational flow coal powder and fuel gas mixed combustor |
| CN103047657A (en) * | 2012-12-19 | 2013-04-17 | 上海巴安水务股份有限公司 | High-efficiency low NOx emission swirling burner and burning method thereof |
| CN103759258A (en) * | 2014-01-13 | 2014-04-30 | 徐州燃控科技股份有限公司 | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor |
| CN106885237A (en) * | 2017-02-23 | 2017-06-23 | 河南汇金智能装备有限公司 | Burner |
| CN108397774A (en) * | 2018-05-10 | 2018-08-14 | 西安交通大学 | It is a kind of to be used for natural gas and the coal dust individually burner of burning or multifuel combustion |
| CN109764334A (en) * | 2019-01-24 | 2019-05-17 | 东方电气集团东方锅炉股份有限公司 | Low Nox coke oven gas burner |
| CN114484438A (en) * | 2022-02-18 | 2022-05-13 | 上海交通大学 | Dual-purpose burner device for coal and ammonia |
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2011
- 2011-03-09 CN CN2011200590602U patent/CN202040815U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116480A (en) * | 2011-03-09 | 2011-07-06 | 西安交通大学 | Industrial pulverized coal swirl combustion system using natural gas for supporting combustion |
| CN102620295A (en) * | 2012-04-13 | 2012-08-01 | 西安康桥能源技术有限责任公司 | Industrial radial concentration dual-air regulation rotational flow coal powder and fuel gas mixed combustor |
| CN102620295B (en) * | 2012-04-13 | 2014-10-22 | 西安康桥能源技术有限责任公司 | Industrial radial concentration dual-air regulation rotational flow coal powder and fuel gas mixed combustor |
| CN103047657A (en) * | 2012-12-19 | 2013-04-17 | 上海巴安水务股份有限公司 | High-efficiency low NOx emission swirling burner and burning method thereof |
| CN103759258A (en) * | 2014-01-13 | 2014-04-30 | 徐州燃控科技股份有限公司 | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor |
| CN103759258B (en) * | 2014-01-13 | 2016-06-15 | 徐州科融环境资源股份有限公司 | A kind of joint low nitrogen vortex burner of oil/gas ignition smooth combustion |
| CN106885237A (en) * | 2017-02-23 | 2017-06-23 | 河南汇金智能装备有限公司 | Burner |
| CN106885237B (en) * | 2017-02-23 | 2023-09-22 | 河南汇金智能装备有限公司 | Burner with a burner body |
| CN108397774A (en) * | 2018-05-10 | 2018-08-14 | 西安交通大学 | It is a kind of to be used for natural gas and the coal dust individually burner of burning or multifuel combustion |
| CN108397774B (en) * | 2018-05-10 | 2024-05-24 | 西安交通大学 | Burner for independent combustion or mixed combustion of natural gas and pulverized coal |
| CN109764334A (en) * | 2019-01-24 | 2019-05-17 | 东方电气集团东方锅炉股份有限公司 | Low Nox coke oven gas burner |
| CN114484438A (en) * | 2022-02-18 | 2022-05-13 | 上海交通大学 | Dual-purpose burner device for coal and ammonia |
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Granted publication date: 20111116 Termination date: 20150309 |
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