CN203586209U - Ultra-low heat value gas combustor - Google Patents
Ultra-low heat value gas combustor Download PDFInfo
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- CN203586209U CN203586209U CN201320821143.XU CN201320821143U CN203586209U CN 203586209 U CN203586209 U CN 203586209U CN 201320821143 U CN201320821143 U CN 201320821143U CN 203586209 U CN203586209 U CN 203586209U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses an ultra-low heat value gas combustor, and relates to a premixed gas combustor. The gas combustor consists of a premixer, a preheating chamber, a combustion chamber, an igniter and a temperature measuring probe, wherein the preheating chamber is filled with a metal porous material so as to enable premixed gases to be subjected to sufficient heat exchanger and to be subsequently conveyed to the combustion chamber; the premixed gases are ignited by a preheated block structured porous medium in the combustion chamber, and are subjected to heat backflow and heat preservation and combustion assisting of porous radiation plates. Therefore, stable combustion with an ultra-low heat value is achieved, the characteristics in combustion and heat exchange of the porous medium are sufficiently utilized, and various defects that in the prior art, leakage is caused and the system operation is complex as a device of an ultra-low heat value gas combustor is large in size and reversing valves are essential to achieve reversing of fume and air are overcome.
Description
Technical field
The technical solution of the utility model relates to the gas burner of premix, specifically super-low calorific value fuel gas burner.
Background technology
Conventionally, calorific value is lower than 3300kJ/m
3(standard state) or 800kcal/m
3the combustion gas of (standard state) is super-low calorific value fuel gas.Because its calorific value is low, be difficult to light and control, often by emptying, burned or directly discharge, caused a large amount of energy wastes and polluted environment.Existing low heat value gas combustion burner generally can only combustion heat value higher than 800kcal/m
3combustion gas, helpless for the burning of super-low calorific value fuel gas.
The combustion technology of super-low calorific value fuel gas is mainly considered from two aspects: the one, with high heating value combustion gas, fuel oil or coal dust mixed combustion; The 2nd, improve the preheat temperature of air and/or combustion gas.Mixed combustion technique has been used part exotic fuels, has increased use cost, also there will be the problems such as combustion stability variation and combustion exhaust gas amount increase greatly simultaneously.The technology that improves combustion gas or air preheating temperature, generally realizes by heat exchanger.CN201010166387.X discloses heat accumulation type super-low calorific value fuel gas and has processed and energy utilization device, adopted reciprocating multi-hole medium combustion heat storage technology, can be for the burning of super-low calorific value fuel gas, but this device volume is larger, and must there is reversal valve to realize the commutation of flue gas and air, inevitably occur mutually to leak, and system operation is more complicated.
Utility model content
Technical problem to be solved in the utility model is: super-low calorific value fuel gas burner is provided, make full use of multi-hole medium combustion and heat transfer characteristic, the device volume commutation large, that must have reversal valve to realize flue gas and air that has overcome the super-low calorific value fuel gas burner of prior art causes occurring leakage mutually and the more complicated shortcomings of system operation.
The utility model solves this technical problem adopted technical scheme: super-low calorific value fuel gas burner, by premixed device, preheating chamber, combustion chamber, igniter and temperature probe form, wherein, being used for super-low calorific value fuel gas is a cylindrical structure with the premixed device mixing of air, by a metal cylinder all sealing up and down, formed, premixed device one end is sealed by plate welding, the premixed device other end is welded on flange component, air intake duct and gas inlet pipe are symmetrically welded at one end of premixed device, air intake duct and gas inlet pipe are arranged symmetrically with, and in 90 °～180 ° angle, at the other end near the premixed device of flange component to there being 2～8 premixed gas outlets, by premixed gas liaison tube, be connected with the premix gas air inlet pipe of preheating chamber respectively, preheating chamber is the cylinder shape space being surrounded by urceolus, inner core, end casing and flange component, is filled with metal polyporous material in preheating chamber, combustion chamber is the space being surrounded by end casing and inner core, inner core is high temperature resistant stainless steel pipe, Upstream section in inner core is filled fine pore porous media, interlude at inner core is filled modular construction porous media, the outlet section of inner core is furnished with porous radiation plate, between the fine pore porous media of Upstream section of inner core and the modular construction porous media of the interlude of inner core, leave the space of 4～6mm, at this, be provided with the igniter electrode of igniter, in the porous media of the Upstream section fine pore of inner core, be provided with temperature probe, preheating is connected by the air isocon that control valve is installed with the air intake duct of premixed device with premixed gas nozzle, control valve is arranged on air isocon, preheating is arranged on end casing with premixed gas nozzle, end casing and outer drum flange are fixed by six pairs of screw bolt and nut, and realize sealing by resistant to elevated temperatures gasket seal, between inner core and end casing, leave the distance of 3～5mm, form slit, inner core and urceolus are all welded on flange component, on flange component, be useful on six through holes that super-low calorific value fuel gas burner is connected with the burner hearth of outside, one end near flange component on urceolus is welded with 2～8 premix gas air inlet pipe, the layout of premix gas air inlet pipe on preheating chamber is two mouthfuls of opposite-flushing types, 3～8 mouthfuls are uniformly distributed opposite-flushing type or spiral-flow type, the outer fill insulant material of urceolus, insulation material is wrapped up by a shell again, shell is designed to two semicircular cylinder shapes, by screw bolt and nut, be fastenedly connected, the above-mentioned end casing of this burner is also filled with insulation material outward, this insulation material is placed in the filling chamber being surrounded by insulation outer ring and heat-preserving cover plate, above-mentioned insulation outer ring is welded on the end casing of burner, heat-preserving cover plate is screwed on insulation outer ring.
Above-mentioned super-low calorific value fuel gas burner, the interlude of described inner core is filled modular construction porous media, its void density is 10PPI～40PPI, at the void density axially and on cross section, is non-uniform Distribution, and the porous media sheet building block system that is 5～20mm by 5～40 layer thicknesses is formed by stacking.
Above-mentioned super-low calorific value fuel gas burner, the fine pore porous media that the Upstream section in described inner core is filled, its void density is 40PPI～65PPI, porosity is 80%～90%.
Above-mentioned super-low calorific value fuel gas burner, the porous radiation plate that the outlet section of described inner core is arranged, its void density is 30PPI～50PPI, porosity is 80%～90%.
Above-mentioned super-low calorific value fuel gas burner, the material of described porous media is foamed ceramics or metal foam.
Above-mentioned super-low calorific value fuel gas burner, the cross section of described fine pore porous media, modular construction porous media and porous radiation plate is circle or Long Circle simultaneously.
Above-mentioned super-low calorific value fuel gas burner, the cross section of described end casing, inner core, urceolus and shell is circle or Long Circle simultaneously.
Above-mentioned super-low calorific value fuel gas burner, it is known that related raw material, parts and installation method thereof is the art.
The beneficial effects of the utility model are: compared with prior art, the outstanding substantive distinguishing features of the utility model is: before super-low calorific value fuel gas passes into burner combustion, and need to be to combustion chamber and preheating chamber preheating.Pre-heating mean is through preheating premixed gas nozzle, to spray in combustion chamber after mixing with air with liquefied petroleum gas or the contour calorific value fuel gas of natural gas, by igniter electrode discharge, light and burn, when temperature monitoring point temperature reaches predetermined value, close preheating premixed gas nozzle, complete preheating.Open super-low calorific value fuel gas and air air-supplying valve enters premixed device, through the gas of premix, enter again preheating chamber.The high thermal conductivity that preheating chamber is filled and the metal polyporous material of low flow resistance can make the gas of premix after sufficient heat exchange, be sent to combustion chamber at preheating chamber again, in combustion chamber, by the porous media after being preheated, ignited and smooth combustion gradually, realize the smooth combustion of super-low calorific value.The smooth combustion of super-low calorific value fuel gas is benefited from the one hand and is entered combustion chamber preheating before, benefits from the other hand the heat disturbance and the short combustion effect of insulation that in the combustion process of combustion chamber, come from modular construction porous media and porous radiation plate.Flue gas after burning enters burner hearth after porous radiation plate, by the convection current of high-temperature flue gas and the radiation effects of porous radiation plate, burner hearth is heated.When fuel gases calorific value is higher, by the control valve on air isocon, control enters the air capacity of premixer and adjusts the premix degree of premixed gas, avoids premixed gas to catch fire in preheating chamber, and air in shortage passes in combustion chamber with premixed gas nozzle through preheating.
Compared with prior art, marked improvement of the present utility model is:
(1) the utility model super-low calorific value fuel gas burner has larger Load Regulation ability and the adaptability of fuel gases calorific value, can realize the not enough 1MJ/m of calorific value
3the smooth combustion of super-low calorific value fuel gas.
(2) porous media in the combustion chamber of the utility model super-low calorific value fuel gas burner is built and is become building block system, its pore structure is not only divided into multistage on flow direction, and at the hole of lateral cross section, be also to have difference in the distribution in aperture, the needs that can adapt to burning and conduct heat, have also reduced the generation that porous media thermal shock resistance damages.
(3) the utility model super-low calorific value fuel gas burner makes full use of multi-hole medium combustion and heat transfer characteristic, and the device volume commutation large, that must have reversal valve to realize flue gas and air that has overcome the low heat value gas combustion burner of prior art causes occurring leakage mutually and the more complicated shortcomings of system operation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the generalized section of facing of the utility model super-low calorific value fuel gas burner structure.
Fig. 2 is the schematic side view of the utility model super-low calorific value fuel gas burner structure.
Fig. 3 is the side-looking generalized section of the utility model super-low calorific value fuel gas burner structure.
Fig. 4 is the schematic diagram of the long round section structure of the utility model super-low calorific value fuel gas burner modular construction porous media.
In figure, 1. preheating premixed gas nozzle, 2. end casing, 3. fine pore porous media, 4. control valve, 5. air isocon, 6. temperature probe, 7. shell, 8. urceolus, 9. inner core, 10. air intake duct, 11. gas inlet pipes, 12. premixed devices, 13. premixed gas outlets, 14. premixed gas liaison tubes, 15. premix gas air inlet pipe, 16. insulation materials, 17. metal polyporous materials, 18. modular construction porous medias, 19. porous radiation plates, 20. flange components, 21. igniter electrodes, 22. outer drum flanges, 23. gasket seals, 24. insulation outer rings, 25. bolts, 26. nuts, 27. heat-preserving cover plates, 28. insulation materials, 29. preheating chambers, 30. combustion chambers.
The specific embodiment
Embodiment illustrated in fig. 1 showing, from the section of facing of super-low calorific value fuel gas burner structure, being used for super-low calorific value fuel gas is a cylindrical structure with the premixed device mixing (12) of air, by a metal cylinder all sealing up and down, formed, premixed device (12) one end is sealed by plate welding, it is upper that premixed device (12) other end is welded on flange component (20), demonstrated premixed gas liaison tube (14) in this figure, the cylinder shape space of preheating chamber (29) for being surrounded by urceolus (8), inner core (9), end casing (2) and flange component (20), is filled with metal polyporous material (17) in preheating chamber, the tubular space of combustion chamber (30) for being surrounded by end casing (2) and inner core (9), inner core (9) is high temperature resistant stainless steel pipe, Upstream section in inner core is filled fine pore porous media (3), interlude at inner core (9) is filled modular construction porous media (18), the outlet section of inner core (9) is furnished with porous radiation plate (19), between the fine pore porous media (3) of Upstream section of inner core (9) and the modular construction porous media (18) of the interlude of inner core (9), leave the space of 4～6mm, at this, be provided with the igniter electrode (21) of igniter, in the Upstream section fine pore of inner core (9) porous media (3), be provided with temperature probe (6), premixed gas nozzle for preheating (1) is connected by the air isocon (5) that control valve (4) is installed with air intake duct (10), premixed gas nozzle for preheating (1) is arranged on end casing (2), end casing (2) and outer drum flange (22) are fixing by six pairs of bolts (25) and nut (26), and realize sealing by resistant to elevated temperatures gasket seal 23, between inner core (9) and end casing (2), leave the distance of 3～5mm, form slit, inner core (9) and urceolus (8) are all welded on flange component (20), on flange component (20), be useful on six through holes that super-low calorific value fuel gas burner is connected with the burner hearth of outside, the outer fill insulant material of urceolus (8) (16), insulation material (16) is wrapped up by a shell (7) again, shell (7) is designed to two semicircular cylinder shapes, by screw bolt and nut, be fastenedly connected.The outer insulation material (28) that is filled with of end casing (2) of this burner, the filling chamber of this insulation material is by being incubated outer ring (24) and heat-preserving cover plate (27) surrounds, insulation outer ring (24) is welded on end casing (2), heat-preserving cover plate (27) is screwed on insulation outer ring (24), the length of combustion chamber (30) is 200～500mm, the interlude of inner core (9) is filled modular construction porous media (18), according to the difference of fuel gases calorific value and modular construction porous media (18) the porous media sheet building block system that to be designed to by 5～40 layer thicknesses be 5～20mm is formed by stacking, its void density is 10PPI～40PPI.
Embodiment illustrated in fig. 2 showing, from the side-looking of super-low calorific value fuel gas burner structure, premixed gas nozzle for preheating (1) is connected by the air isocon (5) that control valve (4) is installed with air intake duct (10), air intake duct (10) and gas inlet pipe (11) are welded on one end of premixed device (12), air intake duct (10) and gas inlet pipe (11) are arranged symmetrically with, and in 90 °～180 ° angle, the other end of premixed device (12) is welded with 2～8 premixed gas outlets (13), between premixed gas outlet (13) and premix gas air inlet pipe (15), by premixed gas liaison tube (14), connected, in figure, also shown temperature probe (6), igniter electrode (21), end casing (2), the position of heat-preserving cover plate (27) and flange component (20), heat-preserving cover plate (27) is fixed by screw.
Embodiment illustrated in fig. 3 showing, from the side-looking section of super-low calorific value fuel gas burner structure, the upper one end near flange component (20) of urceolus (8) is symmetrically welded with 2～8 premix gas air inlet pipe (15), and the layout of premix gas air inlet pipe (15) on preheating chamber is that two mouthfuls of opposite-flushing types, 3～8 mouthfuls are uniformly distributed opposite-flushing type or spiral-flow type.On premixed device (12), be welded with 2～8 premixed gas outlets (13), between premixed gas outlet (13) and premix gas air inlet pipe (15), by premixed gas liaison tube (14), connected, in figure, show the position relationship of shell (7), urceolus (8), inner core (9) and insulation material (16), metal polyporous material (17), porous radiation plate (19), in figure, also shown the position of flange component (20), preheating chamber (29) and combustion chamber (30).
Embodiment illustrated in fig. 4 showing, the modular construction porous media (18) of long round section is formed by stacking by halfround bar slice, semicircle ring plate and the rectangular sheet building block system of different aperture density, and its void density is 10PPI～40PPI.
Embodiment 1
The super-low calorific value fuel gas burner of the present embodiment, by premixed device, preheating chamber, combustion chamber, igniter and temperature probe form, wherein, being used for super-low calorific value fuel gas is a cylindrical structure with the premixed device mixing (12) of air, by a metal cylinder all sealing up and down, formed, premixed device (12) one end is sealed by plate welding, premixed device (12) other end is welded on flange component (20), air intake duct (10) and gas inlet pipe (11) are symmetrically welded at one end of premixed device (12), air intake duct (10) and gas inlet pipe (11) are arranged symmetrically with, and angle in 90 °, at the other end near the premixer of flange component (20) to there being 2 premixed gas outlets (13), between premixed gas outlet (13) and premix gas air inlet pipe (15), by premixed gas liaison tube (14), connected, the cylinder shape space of preheating chamber (29) for being surrounded by urceolus (8), inner core (9), end casing (2) and flange component (20), is filled with metal polyporous material (17) in preheating chamber, the tubular space of combustion chamber 28 for being surrounded by end casing (2) and inner core (9), inner core (9) is high temperature resistant stainless steel pipe, Upstream section in inner core (9) is filled fine pore porous media (3), interlude at inner core (9) is filled modular construction porous media (18), the outlet section of inner core (9) is furnished with porous radiation plate (19), between the fine pore porous media (3) of Upstream section of inner core (9) and the modular construction porous media (18) of the interlude of inner core, leave the space of 4mm, at this, be provided with the igniter electrode (21) of igniter, in the Upstream section fine pore of inner core (9) porous media (3), be provided with temperature probe (6), premixed gas nozzle for preheating (1) is connected by the air isocon (5) that control valve (4) is installed with air intake duct (10), control valve (4) is arranged on air isocon (5), for regulating, enter the air of premixed device (12) and the mixed proportion of combustion gas, premixed gas nozzle for preheating (1) is arranged on end casing (2), end casing (2) and outer drum flange (22) are fixed by six pairs of screw bolt and nut, and realize sealing by resistant to elevated temperatures gasket seal 23, between inner core (9) and end casing (2), leave the distance of 3mm, form slit, inner core (9) and urceolus (8) are all welded on flange component (20), on flange component (20), be useful on six through holes that super-low calorific value fuel gas burner is connected with the burner hearth of outside, the upper one end near flange component (20) of urceolus (8) is welded with two premix gas air inlet pipe (15), the layout of premix gas air inlet pipe on preheating chamber is two mouthfuls of opposite-flushing types, the outer fill insulant material of urceolus (8) (16), insulation material (16) is wrapped up by a shell (7) again, shell (7) is designed to two semicircular cylinder shapes, by screw bolt and nut, be fastenedly connected, the outer insulation material (28) that is filled with of end casing (2) of this burner, the filling chamber of this insulation material is by being incubated outer ring (24) and heat-preserving cover plate (27) surrounds, insulation outer ring (24) is welded on end casing (2), heat-preserving cover plate (27) is screwed on insulation outer ring (24).In the super-low calorific value fuel gas burner of the present embodiment, it is cylindrical structural that the interlude of inner core (9) is filled modular construction porous media (18), its void density is 10PPI～40PPI, at the void density axially and on cross section, be non-uniform Distribution, the porous media disk that is 10mm by 10 layer thicknesses and circular ring plate building block system are formed by stacking, every layer is formed by stacking by a disk and a circular ring plate, the arrangement that wherein void density of internal layer disk is from upstream to downstream is respectively 30PPI, 25PPI, 20PPI, 15PPI and 10PPI, the arrangement that the void density of outer circular ring plate is from upstream to downstream is respectively 40PPI, 35PPI, 30PPI, 25PPI and 20PPI, the porous media of every kind of same size is axially being 2 layers, the void density of the fine pore porous media (3) that the Upstream section in inner core (9) is filled is 40PPI, the void density of the porous radiation plate (19) that the outlet section of inner core (9) is arranged is 50PPI, porosity is 85%, the material of porous media is foamed ceramics.The cross section of fine pore porous media (3), modular construction porous media (18) and porous radiation plate (19) is circular simultaneously.The cross section of end casing (2), inner core (9), urceolus (8) and shell (7) is circle.
Embodiment 2
The super-low calorific value fuel gas burner of the present embodiment, by premixed device, preheating chamber, combustion chamber, igniter and temperature probe form, wherein, being used for super-low calorific value fuel gas is a cylindrical structure with the premixed device mixing (12) of air, by a metal cylinder all sealing up and down, formed, premixed device (12) one end is sealed by plate welding, premixed device (12) other end is welded on flange component (20), air intake duct (10) and gas inlet pipe (11) are symmetrically welded at one end of premixer, air intake duct (10) and gas inlet pipe (11) are arranged symmetrically with, and become 120 ° of angles, at the other end near the premixer of flange component (20) to there being 4 premixed gas outlets (13), between premixed gas outlet (13) and premix gas air inlet pipe (15), by premixed gas liaison tube (14), connected, the cylinder shape space of preheating chamber (29) for being surrounded by urceolus (8), inner core (9), end casing (2) and flange component (20), is filled with metal polyporous material (17) in preheating chamber, the tubular space of combustion chamber (30) for being surrounded by end casing (2) and inner core (9), inner core (9) is high temperature resistant stainless steel pipe, Upstream section in inner core (9) is filled fine pore porous media (3), interlude at inner core (9) is filled modular construction porous media (18), the outlet section of inner core (9) is furnished with porous radiation plate (19), between the fine pore porous media (3) of Upstream section of inner core (9) and the modular construction porous media (18) of the interlude of inner core, leave the space of 5mm, at this, be provided with the igniter electrode (21) of igniter, in the Upstream section fine pore of inner core (9) porous media (3), be provided with temperature probe (6), premixed gas nozzle for preheating (1) is connected by the air isocon (5) that control valve (4) is installed with air intake duct (10), control valve (4) is arranged on air isocon (5), for regulating, enter the air of premixed device (12) and the mixed proportion of combustion gas, premixed gas nozzle for preheating (1) is arranged on end casing (2), end casing (2) and outer drum flange (22) are fixed by six pairs of screw bolt and nut, and realize sealing by resistant to elevated temperatures gasket seal 23, between inner core (9) and end casing (2), leave the distance of 4mm, form slit, inner core (9) and urceolus (8) are all welded on flange component (20), on flange component (20), be useful on six through holes that super-low calorific value fuel gas burner is connected with the burner hearth of outside, the upper one end near flange component (20) of urceolus (8) is welded with 4 premix gas air inlet pipe (15), the layout of premixed gas air inlet pipe 15 on preheating chamber is 4 mouthfuls and is uniformly distributed spiral-flow type, the outer fill insulant material of urceolus (8) (16), insulation material (16) is wrapped up by a shell (7) again, shell (7) is designed to two semicircular cylinder shapes, by screw bolt and nut, be fastenedly connected, the outer insulation material (28) that is filled with of end casing (2) of this burner, the filling chamber of this insulation material is by being incubated outer ring (24) and heat-preserving cover plate (27) surrounds, insulation outer ring (24) is welded on end casing (2), heat-preserving cover plate (27) is screwed on insulation outer ring (24).In the super-low calorific value fuel gas burner of the present embodiment, it is cylindrical structural that the interlude of inner core (9) is filled modular construction porous media (18), its void density is 10～40PPI, at the void density axially and on cross section, be non-uniform Distribution, the porous media disk that is 10mm by 12 layer thicknesses and semicircle ring plate building block system are formed by stacking, every layer is formed by stacking by a disk and 2 semicircle ring plates, and the arrangement that wherein void density of internal layer disk is from upstream to downstream is respectively 35PPI, 30PPI, 25PPI, 20PPI, 15PPI, 10PPI, 15PPI, 20PPI, 25PPI, 30PPI, 35PPI and 40PPI, the arrangement that the void density of outer semicircular ring is from upstream to downstream is respectively 40PPI, 35PPI, 30PPI, 25PPI, 20PPI, 15PPI, 10PPI, 15PPI, 20PPI, 25PPI, 30PPI and 30PPI, the porous media of every kind of same size is axially being 1 layer, the fine pore porous media (3) that Upstream section in inner core (9) is filled is 1 porous media disk, its void density is 65PPI, the void density of the porous radiation plate (19) that the outlet section of inner core (9) is arranged is 30PPI, and porosity is 90%.The material of porous media is metal foam.The cross section of fine pore porous media (3), modular construction porous media (18) and porous radiation plate (19) is circular simultaneously.The cross section of end casing (2), inner core (9), urceolus (8) and shell (7) is circle.
The super-low calorific value fuel gas burner of the present embodiment, by premixed device, preheating chamber, combustion chamber, igniter and temperature probe form, wherein, being used for super-low calorific value fuel gas is a cylindrical structure with the premixed device mixing (12) of air, by a metal cylinder all sealing up and down, formed, premixed device (12) one end is sealed by plate welding, premixed device (12) other end is welded on flange component (20), air intake duct (10) and gas inlet pipe (11) are symmetrically welded at one end of premixer, and become 180 ° of angles, at the other end near the premixer of flange component (20) to there being 8 premixed gas outlets (13), between premixed gas outlet (13) and premix gas air inlet pipe (15), by premixed gas liaison tube (14), connected, the cylinder shape space of preheating chamber (29) for being surrounded by urceolus (8), inner core (9), end casing (2) and flange component (20), is filled with metal polyporous material (17) in preheating chamber, the barrel space of combustion chamber (30) for being surrounded by end casing (2) and inner core (9), inner core (9) is high temperature resistant stainless steel pipe, Upstream section in inner core (9) is filled fine pore porous media (3), interlude at inner core (9) is filled modular construction porous media (18), the outlet section of inner core (9) is furnished with porous radiation plate (19), between the fine pore porous media (3) of Upstream section of inner core (9) and the modular construction porous media (18) of the interlude of inner core, leave the space of 6mm, at this, be provided with the igniter electrode (21) of igniter, in the Upstream section fine pore of inner core (9) porous media (3), be provided with temperature probe (6), premixed gas nozzle for preheating (1) is connected by the air isocon (5) that control valve (4) is installed with air intake duct (10), control valve (4) is arranged on air isocon (5), for regulating, enter the air of premixed device (12) and the mixed proportion of combustion gas, premixed gas nozzle for preheating (1) is arranged on end casing (2), end casing (2) and outer drum flange (22) are fixed by six pairs of screw bolt and nut, and realize sealing by resistant to elevated temperatures gasket seal 23, between inner core (9) and end casing (2), leave the distance of 5mm, form slit, inner core (9) and urceolus (8) are all welded on flange component (20), on flange component (20), be useful on six through holes that super-low calorific value fuel gas burner is connected with the burner hearth of outside, the upper one end near flange component (20) of urceolus (8) is symmetrically welded with 8 premix gas air inlet pipe (15), arrangement form on preheating chamber is 8 mouthfuls and is uniformly distributed opposite-flushing type, the outer fill insulant material of urceolus (8) (16), insulation material (16) is wrapped up by a shell (7) again, shell (7) is designed to two semicircular cylinder shapes, by screw bolt and nut, be fastenedly connected, the outer insulation material (28) that is filled with of end casing (2) of this burner, the filling chamber of this insulation material is by being incubated outer ring (24) and heat-preserving cover plate (27) surrounds, insulation outer ring (24) is welded on end casing (2), heat-preserving cover plate (27) is screwed on insulation outer ring (24).In the super-low calorific value fuel gas burner of the present embodiment, it is the cylinder of a long round section that the interlude of inner core (9) is filled modular construction porous media (18), its void density is 10～30PPI, at the void density axially and on cross section, be non-uniform Distribution, the porous media halfround bar slice that is 20mm by 15 layer thicknesses, rectangular sheet and semicircle ring plate building block system are formed by stacking, the cross section of modular construction porous media (18) as shown in Figure 4, the arrangement that the void density of outer semicircle annular and rectangle porous media sheet is from upstream to downstream is respectively 10PPI, 15PPI, 20PPI, 25PPI and 30PPI, the arrangement that internal layer void density semicircle and rectangle porous media sheet is from upstream to downstream is respectively 15PPI, 20PPI, 25PPI, 25PPI and 20PPI, the porous media of every kind of same size is axially being 3 layers, the void density of the fine pore porous media (3) that the Upstream section in inner core (9) is filled is 50PPI, the void level of the porous radiation plate (19) that the outlet section of inner core (9) is arranged is 50PPI, porosity is 80%.The material of porous media is foamed ceramics.The cross section of fine pore porous media (3), modular construction porous media (18), porous radiation plate (19), end casing (2), inner core (9), urceolus (8) and shell (7) is Long Circle.
In above-described embodiment, to be the art known for related raw material, parts and installation method thereof.
Claims (6)
1. super-low calorific value fuel gas burner, it is characterized in that: by premixed device, preheating chamber, combustion chamber, igniter and temperature probe form, wherein, being used for super-low calorific value fuel gas is a cylindrical structure with the premixed device mixing of air, by a metal cylinder all sealing up and down, formed, premixed device one end is sealed by plate welding, the premixed device other end is welded on flange component, air intake duct and gas inlet pipe are symmetrically welded at one end of premixed device, air intake duct and gas inlet pipe are arranged symmetrically with, and in 90 °～180 ° angle, at the other end near the premixed device of flange component to there being 2～8 premixed gas outlets, by premixed gas liaison tube, be connected with the premix gas air inlet pipe of preheating chamber respectively, preheating chamber is the cylinder shape space being surrounded by urceolus, inner core, end casing and flange component, is filled with metal polyporous material in preheating chamber, combustion chamber is the space being surrounded by end casing and inner core, inner core is high temperature resistant stainless steel pipe, Upstream section in inner core is filled fine pore porous media, interlude at inner core is filled modular construction porous media, the outlet section of inner core is furnished with porous radiation plate, between the fine pore porous media of Upstream section of inner core and the modular construction porous media of the interlude of inner core, leave the space of 4～6mm, at this, be provided with the igniter electrode of igniter, in the porous media of the Upstream section fine pore of inner core, be provided with temperature probe, preheating is connected by the air isocon that control valve is installed with the air intake duct of premixed device with premixed gas nozzle, control valve is arranged on air isocon, preheating is arranged on end casing with premixed gas nozzle, end casing and outer drum flange are fixed by six pairs of screw bolt and nut, and realize sealing by resistant to elevated temperatures gasket seal, between inner core and end casing, leave the distance of 3～5mm, form slit, inner core and urceolus are all welded on flange component, on flange component, be useful on six through holes that super-low calorific value fuel gas burner is connected with the burner hearth of outside, one end near flange component on urceolus is welded with 2～8 premix gas air inlet pipe, the layout of premix gas air inlet pipe on preheating chamber is two mouthfuls of opposite-flushing types, 3～8 mouthfuls are uniformly distributed opposite-flushing type or spiral-flow type, the outer fill insulant material of urceolus, insulation material is wrapped up by a shell again, shell is designed to two semicircular cylinder shapes, by screw bolt and nut, be fastenedly connected, the above-mentioned end casing of this burner is also filled with insulation material outward, this insulation material is placed in the filling chamber being surrounded by insulation outer ring and heat-preserving cover plate, above-mentioned insulation outer ring is welded on the end casing of burner, heat-preserving cover plate is screwed on insulation outer ring.
2. according to the said super-low calorific value fuel gas burner of claim 1, it is characterized in that: the interlude of described inner core is filled modular construction porous media, its void density is 10PPI～40PPI, at the void density axially and on cross section, be non-uniform Distribution, the porous media sheet building block system that is 5～20mm by 5～40 layer thicknesses is formed by stacking.
3. according to the said super-low calorific value fuel gas burner of claim 1, it is characterized in that: the fine pore porous media that the Upstream section in described inner core is filled, its void density is 40PPI～65PPI, porosity is 80%～90%.
4. according to the said super-low calorific value fuel gas burner of claim 1, it is characterized in that: the porous radiation plate that the outlet section of described inner core is arranged, its void density is 30PPI～50PPI, porosity is 80%～90%.
5. according to the said super-low calorific value fuel gas burner of claim 1, it is characterized in that: the cross section of described fine pore porous media, modular construction porous media and porous radiation plate is circle or Long Circle simultaneously.
6. according to the said super-low calorific value fuel gas burner of claim 1, it is characterized in that: the cross section of described end casing, inner core, urceolus and shell is circle or Long Circle simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821143.XU CN203586209U (en) | 2013-12-11 | 2013-12-11 | Ultra-low heat value gas combustor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821143.XU CN203586209U (en) | 2013-12-11 | 2013-12-11 | Ultra-low heat value gas combustor |
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| CN203586209U true CN203586209U (en) | 2014-05-07 |
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| CN201320821143.XU Withdrawn - After Issue CN203586209U (en) | 2013-12-11 | 2013-12-11 | Ultra-low heat value gas combustor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672895A (en) * | 2013-12-11 | 2014-03-26 | 河北工业大学 | Ultralow heat value gas combustor |
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2013
- 2013-12-11 CN CN201320821143.XU patent/CN203586209U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672895A (en) * | 2013-12-11 | 2014-03-26 | 河北工业大学 | Ultralow heat value gas combustor |
| CN103672895B (en) * | 2013-12-11 | 2015-12-30 | 河北工业大学 | Super-low calorific value fuel gas burner |
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