CN110595220A - Flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device - Google Patents
Flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device Download PDFInfo
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- CN110595220A CN110595220A CN201910942725.5A CN201910942725A CN110595220A CN 110595220 A CN110595220 A CN 110595220A CN 201910942725 A CN201910942725 A CN 201910942725A CN 110595220 A CN110595220 A CN 110595220A
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- heat storage
- burner
- flue gas
- combustion
- heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention discloses a flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device, and belongs to the technical field of energy conservation and emission reduction. The flue gas entrainment type low NOx regenerative combustion high-temperature heating device comprises a high-temperature-resistant kiln, a first regenerative burner and a second regenerative burner; first hold hot combustion ware with the second holds hot combustion ware front end and is equipped with first burner block and second burner block respectively, utilizes postcombustion district flame speed to form strong venturi negative pressure effect around burner block horn mouth, and the negative pressure of production will effectively curl up the flue gas of low oxygen content flows back to the postcombustion district in the high temperature resistant kiln, and the air in these low oxygen content's flue gas and the postcombustion district mixes once more, and postcombustion's intensity can greatly reduced to reduce flame temperature, effectively restrained nitrogen oxide's formation volume, the other benefit that flame temperature reduces just can effectively reduce the high temperature thermal radiation damage of flame to nozzle body part, is favorable to delaying the life of nozzle.
Description
Technical Field
The invention relates to the technical field of energy conservation and emission reduction, in particular to a flue gas entrainment type low NOx heat storage combustion high-temperature heating device.
Background
The heat accumulating type burner technology is also known as high temperature air combustion technology (HTAC), is the highest one in the field of conventional air combustion, has wide application in high temperature kilns such as steel heating furnaces, forging heating furnaces, aluminum melting furnaces and the like, has 40-65% of energy-saving space compared with a cold air burner and a common preheated air burner, belongs to a novel combustion device with high efficiency, energy saving, low pollution and high benefit, is known as one of the key technologies of the 21 st century in Japan, has incomparable advantages of other types of burners, and brings excellent economic and social benefits.
The temperature of the preheated air of the heat accumulating type burner reaches 1000 ℃, the flame temperature is very high, which is the main reason of high combustion efficiency and energy saving, and is the biggest technical defect of the burner, and the main defect of the burner has two aspects; the first is that high flame temperature results in very high production of nitrogen oxides (NOx), a greenhouse gas that is more polluting than CO 2; the second such high combustion air temperature and flame temperature results in very short structural life of the burner and poor operational stability.
Disclosure of Invention
The invention aims to provide a flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device, which aims to solve the problems that the existing heat accumulation type burner has low structural life, poor operation stability and high content of nitrogen oxides in combustion emissions due to high combustion temperature.
In order to solve the technical problem, the invention provides a flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device, which comprises a high-temperature resistant kiln, a first heat accumulation burner and a second heat accumulation burner;
the first heat accumulation burner and the second heat accumulation burner are respectively arranged on two sides of the high-temperature-resistant kiln and are communicated with the high-temperature-resistant kiln;
the first heat accumulation burner and the second heat accumulation burner can be used for carrying out jet flame heating or discharging flue gas, and can be used for alternately heating metal materials in the high-temperature resistant kiln;
the first heat accumulation combustor with the second heat accumulation combustor lower extreme is connected with first heat accumulation device and second heat accumulation device respectively, first heat accumulation device with the second heat accumulation device all can be used to the heated air or carry out heat recovery and cooling to the high temperature flue gas that produces after the burning.
Optionally, the first heat accumulation burner comprises a first burner body, a first backflow baffle, a first burner brick, a first cold air pipe and a first gas pipe;
the first backflow baffle is arranged at the front end inside the first burner body and used for graded conveying of hot air or passing of flue gas after combustion;
the first burner brick is fixedly connected with the inner wall of the high-temperature-resistant kiln, and the tail end of the first burner brick is fixedly connected with the first burner body;
the first cold air pipe penetrates through the first burner body, is fixedly connected with the first backflow baffle and is used for providing combustion-supporting air required by combustion;
the first gas pipe is positioned in the first cold air pipe and used for ejecting natural gas to burn;
the tail end of the first gas pipe is also provided with a first three-way pipe used for being communicated with an external gas supply pipeline.
Optionally, two waist-shaped through grooves are formed in two sides of the first backflow baffle and are used for cyclone conveying of primary air and graded conveying of secondary air; and the first backflow baffle is also provided with an ignition gun, an ignition flame detector and a main flame detector.
Optionally, the front end of the first gas pipe is further provided with a first gas nozzle and a first spinning disk.
Optionally, the first heat storage device is communicated with the first heat storage combustor through a heat storage box riser; the first heat storage device comprises a first heat storage box body, a first grid plate and a first heat storage medium; the first grid plate is positioned in the first heat storage box body, and divides the first heat storage box body into a first heat storage chamber and a first ash removal chamber;
the first heat storage medium is positioned in the first heat storage chamber and is placed on the first grid plate;
the first heat storage box body is also provided with a first filling cover, a first ball outlet door and a first ash removal door;
the first filling cover is positioned on the upper surface of the first heat storage box body and used for supplementing the first heat storage medium;
the first ball outlet door is positioned on the side wall of the first heat accumulation chamber and used for taking out the first heat accumulation medium;
the first ash removal door is positioned on the side wall of the first ash removal chamber and used for removing ash precipitated in the flue gas.
Optionally, the second regenerative burner comprises a second burner body, a second backflow baffle, a second burner block, a second cold air pipe and a second fuel air pipe;
the second backflow baffle is arranged at the front end of the interior of the second burner body and used for graded conveying of hot air or passing of flue gas after combustion;
the second burner block is fixedly connected with the inner wall of the high-temperature resistant kiln, and the tail end of the second burner block is fixedly connected with the second burner body;
the second cold air pipe penetrates through the second burner body, is fixedly connected with the second backflow baffle and is used for providing combustion-supporting air required by combustion;
the second fuel gas pipe is positioned in the second cold air pipe and used for ejecting natural gas to burn;
and the tail end of the second gas pipe is also provided with a second three-way pipe which is used for being communicated with an external gas supply pipeline.
Optionally, a second gas nozzle and a second swirl plate are further disposed at the front end of the second gas pipe.
Optionally, the second heat storage device is communicated with the second heat storage combustor through a heat storage box riser; the second heat storage device comprises a second heat storage box body, a second grid plate and a second heat storage medium;
the second grid plate is positioned in the second heat storage box body, and divides the second heat storage box body into a second heat storage chamber and a second ash removal chamber;
the second heat storage medium is positioned in the second heat storage chamber and is placed on the second grid plate;
the second heat storage box body is also provided with a second filling cover, a second ball outlet door and a second ash removal door;
the second filling cover is positioned on the upper surface of the second heat storage box body and used for supplementing the second heat storage medium;
the second ball outlet door is positioned on the side wall of the second heat accumulation chamber and used for taking out the second heat accumulation medium;
the second ash removal door is positioned on the side wall of the second ash removal chamber and used for removing ash precipitated in the flue gas.
Optionally, the first heat storage device and the second heat storage device are communicated through a smoke exhaust pipe, and a first air valve, a second air valve, a first smoke valve and a second smoke valve are mounted on the smoke exhaust pipe;
the second air valve and the second flue gas valve are respectively used for air intake and smoke exhaust of the first regenerative burner;
the first air valve and the first smoke valve are respectively used for air intake and smoke exhaust of the second regenerative burner.
Optionally, the tail ends of the first heat storage device and the second heat storage device are respectively provided with an air blower and a smoke exhaust fan, and both the air blower and the smoke exhaust fan can be used for supporting combustion or exhausting smoke.
The invention provides a flue gas entrainment type low NOx regenerative combustion high-temperature heating device which comprises a high-temperature-resistant kiln, a first regenerative burner and a second regenerative burner; the first heat accumulation burner and the second heat accumulation burner are respectively arranged on two sides of the high-temperature-resistant kiln and are communicated with the high-temperature-resistant kiln; the first heat accumulation burner and the second heat accumulation burner can be used for carrying out jet flame heating or discharging flue gas, and can be used for alternately heating metal materials in the high-temperature resistant kiln; first heat accumulation combustor with the second heat accumulation combustor front end is equipped with first burner block and second burner block respectively, utilizes postcombustion district flame speed to form strong venturi negative pressure effect around burner block horn mouth, and the negative pressure of production will effectively entrainment low oxygen content's flue gas backward flow to postcombustion district in the high temperature resistant kiln, and the air in these low oxygen content's flue gas and the postcombustion district mixes once more, makes this regional combustion-supporting wind oxygen content reduce about 8%, and the secondary combustion's that these low oxygen content's combustion-supporting wind and gas were accomplished intensity can greatly reduced, thereby reduces flame temperature, has effectively restrained nitrogen oxide's formation volume, and the other benefit of flame temperature reduction is exactly that can effectively reduce the high temperature heat radiation damage of flame to the nozzle body part, is favorable to postponing the life of nozzle.
Drawings
FIG. 1 is a schematic view of the overall structure of a flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device provided by the invention;
FIG. 2 is a schematic structural diagram of a first regenerative burner of a flue gas entrainment type low NOx regenerative combustion high-temperature heating device provided by the invention;
FIG. 3 is a schematic structural diagram of a first backflow baffle of the flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device provided by the invention;
FIG. 4 is an isometric view of a first reverse flow baffle of the flue gas entrainment type low NOx heat accumulation combustion high temperature heating device provided by the invention;
FIG. 5 is a schematic structural diagram of a second regenerative burner of a flue gas entrainment type low NOx regenerative combustion high-temperature heating device provided by the invention.
Detailed Description
The flue gas entrainment type low NOx heat accumulation combustion high temperature heating device provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The invention provides a flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device, which comprises a high-temperature resistant kiln 1, a first heat accumulation burner 2 and a second heat accumulation burner 3, wherein the high-temperature resistant kiln 1 is provided with a first heat accumulation burner and a second heat accumulation burner; the first heat accumulation burner 2 and the second heat accumulation burner 3 are respectively arranged at two sides of the high-temperature-resistant kiln 1 and are communicated with the high-temperature-resistant kiln 1; the first heat accumulation burner 2 and the second heat accumulation burner 3 can be used for heating by spraying flame or discharging smoke, and can be used for alternately heating the metal material in the high-temperature resistant kiln 1; first heat accumulation combustor 2 with the 3 lower extremes of second heat accumulation combustor are connected with first heat accumulation device 4 and second heat accumulation device 5 respectively, first heat accumulation device 4 with second heat accumulation device 5 all can be used to the heated air or carry out heat recovery and cooling to the high temperature flue gas that produces after the burning.
Specifically, as shown in fig. 1 and 2, the first heat accumulation burner 2 includes a first burner body 6, a first backflow baffle 7, a first burner block 8, a first cold air pipe 9, and a first gas pipe 10; the first backflow baffle 7 is arranged at the front end inside the first burner body 6 and used for graded conveying of hot air or passing of flue gas after combustion; first burner block 8 with 1 inner wall fixed connection of high temperature resistant kiln, and terminal with 6 fixed connection of first burner body, 8 front ends of first burner block are the horn mouth form, utilize postcombustion district flame speed to be in 8 horn mouths of first burner block form strong venturi negative pressure effect all around, the negative pressure of production will effectively be inhaled the flue gas of low oxygen content flows back to the postcombustion district in high temperature resistant kiln 1, and the air in these low oxygen content's flue gas and the postcombustion district mixes once more, makes this regional combustion-supporting wind oxygen content can reduce about 8%, and the intensity of the postcombustion that these low oxygen content's combustion-supporting wind and gas were accomplished can greatly reduced to reduce flame temperature, effectively restrained nitrogen oxide's formation volume, the other benefit that flame temperature reduces just can effectively reduce flame right the high temperature heat radiation damage of the 2 hot combustion parts of first combustor, the service life of the first heat accumulation burner 2 is prolonged; the first cold air pipe 9 penetrates through the first burner body 6, is fixedly connected with the first backflow baffle 7, and is used for providing combustion-supporting air required by combustion; the first gas pipe 10 is positioned in the first cold air pipe 9 and is used for spraying natural gas to burn; the tail end of the first gas pipe 10 is also provided with a first three-way pipe 11 which is used for being communicated with an external gas supply pipeline; first gas pipe 10 front end still is equipped with first gas nozzle 101 and first spinning disk 102, first gas nozzle 101 with first gas pipe 10 carries the combustion area with the speed and the angle of design with the gas, simultaneously first gas pipe 10 front end first spinning disk 102 can carry the effective whirl of a wind to a combustion area, and the first wind that these whirl were carried forms primary mixing and accomplishes a burning with the gas, forms the root of flame, all has fine stable flame about, and the wind also can be right simultaneously first gas pipe 10 first gas nozzle 101 with first spinning disk 102 plays fine cooling guard action.
Further, as shown in fig. 3 and 4, two waist-shaped through grooves 71 are formed in two sides of the first backflow baffle 7, and are used for carrying primary air in a swirling manner and carrying secondary air in a grading manner, so that the combustion intensity of flame of the first heat accumulation burner 2 is effectively reduced, the temperature of the flame is effectively reduced, the generation amount of nitrogen oxides is suppressed, meanwhile, the backflow baffle 7 has an excellent shielding and heat insulation effect on high-temperature flame, the heat radiation influence of the high-temperature flame on internal components such as the first cold air pipe 9 and the first gas pipe 10 can be greatly reduced, and the service lives of the components are prolonged; still be equipped with burning torch 39, ignition flame detector 40 and main flame detector 41 on the first refluence baffle 7, burning torch 39 is used for forming ignition flame to light main flame, ignition flame detector 40 is installed burning torch 39's afterbody, the central line with burning torch 39 central line coincidence, the main function is monitoring at any time burning torch 39 flame guarantees ignition flame's security, and main flame detector 41 is then installed whether the existence of main flame is monitored at any time to the lateral wall of first burner body 6, guarantees main flame's security.
Specifically, with continued reference to fig. 2, the first thermal storage device 4 is in communication with the first regenerative combustor 2 through a thermal storage box riser; the first thermal storage device 4 includes a first thermal storage tank body 12, a first grid plate 13, a first thermal storage medium 14; the first grid plate 13 is positioned in the first heat storage box body 12 and divides the first heat storage box body 12 into a first heat storage chamber and a first ash removal chamber; the first thermal storage medium 14 is located in the first thermal storage chamber and is placed on the first grid plate 13; the first heat storage box body 12 is also provided with a first filling cover 15, a first goal outlet 16 and a first ash removal door 17; the first filling lid 15 is located on the upper surface of the first thermal storage tank body 12, and is used for replenishing the first thermal storage medium 14; the first discharging door 16 is positioned on the side wall of the first heat storage chamber and is used for discharging the first heat storage medium 14; the first ash removal door 17 is located on the side wall of the first ash removal chamber and is used for removing ash precipitated in the flue gas.
Specifically, as shown in fig. 1 and fig. 5, the second regenerative burner 3 includes a second burner body 20, a second backflow baffle 21, a second burner block 22, a second cold air pipe 23, and a second fuel pipe 24; the second backflow baffle 21 is mounted at the front end inside the second burner body 20 and used for graded conveying of hot air or passing of flue gas after combustion; the second burner block 22 is fixedly connected with the inner wall of the high-temperature resistant kiln 1, and the tail end of the second burner block is fixedly connected with the second burner body 20; the front end of the second burner block 22 is in a bell mouth shape, a strong venturi negative pressure effect is formed around the bell mouth of the second burner block 22 by utilizing the flame speed of a secondary combustion area, the generated negative pressure effectively sucks the low-oxygen-content flue gas in the high-temperature resistant kiln 1 to flow back to the secondary combustion area, and the low-oxygen-content flue gas and the air in the secondary combustion area are mixed again, so that the oxygen content of combustion-supporting air in the area can be reduced by about 8%, the strength of secondary combustion completed by the low-oxygen-content combustion-supporting air and the fuel gas can be greatly reduced, the flame temperature is reduced, the generation amount of nitrogen oxides is effectively inhibited, and the reduction of the flame temperature has the additional benefit of effectively reducing the high-temperature thermal radiation damage of the flame to the body part of the second heat accumulation burner 3 and being beneficial to prolonging the service life of the second heat accumulation burner 3; the second cold air pipe 23 penetrates through the second burner body 20, is fixedly connected with the second backflow baffle 21, and is used for providing combustion-supporting air required by combustion; the second fuel pipe 24 is located in the second cold air pipe 23 and is used for ejecting natural gas for combustion; the tail end of the second gas pipe 24 is also provided with a second three-way pipe 25 which is used for being communicated with an external gas supply pipeline; the front end of the second gas pipe 24 is also provided with a second gas nozzle 241 and a second cyclone sheet 242; the second gas nozzle 241 and the second gas pipe 24 deliver the gas to the combustion area at a designed speed and angle, and the second swirl plate 242 at the front end of the second gas pipe 24 can deliver primary air to the primary combustion area in an effective swirl manner, the primary air delivered by the swirl forms a preliminary mixing with the gas and completes primary combustion, so that the root of the flame is formed, the flame is well stabilized, and the primary air can also play a good role in cooling and protecting the second gas pipe 24, the second gas nozzle 241 and the second swirl plate 242; the second backflow flap 21 has the same structural and functional functions as the first backflow flap 7.
Further, the second heat storage device 5 is communicated with the second heat storage combustor 3 through a heat storage box riser pipe; the second thermal storage device 5 includes a second thermal storage tank 26, a second grid plate 27, a second thermal storage medium 28; the second grid plate 27 is positioned in the second heat storage box body 26 and divides the second heat storage box body 26 into a second heat storage chamber and a second ash removal chamber; the second thermal storage medium 28 is located in the second thermal storage chamber and is placed on the second mesh plate 27; the second heat storage box body 26 is also provided with a second filling cover 29, a second goal outlet 30 and a second ash removal door 31; the second filling lid 29 is located on the upper surface of the second thermal storage tank 26, and is used for replenishing the second thermal storage medium 28; the second discharging door 30 is positioned on the side wall of the second heat storage chamber and is used for discharging the second heat storage medium 28; the second ash removal door 31 is located on the side wall of the second ash removal chamber and is used for removing ash precipitated in the flue gas.
Specifically, please refer to fig. 1, the first heat storage device 4 is communicated with the second heat storage device 5 through a smoke exhaust pipe 32, and the smoke exhaust pipe 32 is provided with a first air valve 33, a second air valve 34, a first smoke valve 35 and a second smoke valve 36; the second air valve 34 and the second flue gas valve 36 are used for air intake and smoke exhaust of the first regenerative combustor 2, respectively; the first air valve 33 and the first flue gas valve 35 are used for intake and exhaust of the second regenerative combustor 3, respectively; the first heat storage device 4 and the second heat storage device 5 are respectively provided with a blower 37 and a smoke exhaust fan 38 at the tail ends, and both the blower 37 and the smoke exhaust fan 38 can be used for combustion supporting or smoke exhaust.
Specifically, when the metal in the high-temperature resistant kiln 1 is heated, firstly, the first heat accumulation burner 2 sprays gas and the ignition gun 39 ignites the gas to form a main flame 18, the smoke 19 formed by combustion is influenced by the bell mouth shape of the first burner block 8, a venturi negative pressure effect is formed at the front end of the first burner block 8, so that the smoke is sucked into the combustion area again, the smoke 19 is mixed with the air in the combustion area, the oxygen content in the combustion area is reduced, the combustion intensity is reduced, and the temperature and the emission of nitrogen oxides are reduced; the flue gas which is completely combusted flows to the second heat accumulation burner 3 and enters the second heat accumulation device 5 through the second backflow baffle 21, heat of the flue gas is greatly absorbed when the flue gas passes through the second heat accumulation medium 28, the second air valve 34 and the first flue gas valve 35 are in an open state, the first air valve 33 and the second flue gas valve 36 are in a closed state, and the cooled flue gas is discharged to the atmosphere under the action of the smoke exhaust fan 38; the blower 37 is in an open state at the same time, and outside air pushes air into the first heat storage device 4 through the blower 37 and enters a combustion area for combustion supporting through the first backflow baffle 7; first heat accumulation combustor 2 with second heat accumulation combustor 3 is for alternate work, and general alternate time is 40-60 seconds, and two heat accumulation combustors keep one burning throughout and discharge fume in alternate process, so reciprocal, guarantee last high temperature of keeping in the high temperature resistant kiln 1.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A flue gas entrainment type low NOx regenerative combustion high-temperature heating device is characterized by comprising a high-temperature resistant kiln (1), a first regenerative burner (2) and a second regenerative burner (3);
the first heat accumulation burner (2) and the second heat accumulation burner (3) are respectively arranged on two sides of the high-temperature-resistant kiln (1) and are communicated with the high-temperature-resistant kiln (1);
the first heat accumulation burner (2) and the second heat accumulation burner (3) can be used for heating by spraying flame or discharging flue gas, and can be used for alternately heating metal materials in the high-temperature resistant kiln (1);
first heat accumulation combustor (2) with second heat accumulation combustor (3) lower extreme is connected with first heat accumulation device (4) and second heat accumulation device (5) respectively, first heat accumulation device (4) with second heat accumulation device (5) all can be used to the heated air or carry out heat recovery and cooling to the high temperature flue gas that produces after the burning.
2. The flue gas entrainment type low NOx heat storage combustion high temperature heating apparatus as claimed in claim 1, wherein said first heat storage burner (2) comprises a first burner body (6), a first reverse flow baffle (7), a first burner block (8), a first cold air duct (9) and a first gas duct (10);
the first backflow baffle (7) is arranged at the front end inside the first burner body (6) and is used for graded conveying of hot air or passing of flue gas after combustion;
the first burner brick (8) is fixedly connected with the inner wall of the high-temperature-resistant kiln (1), and the tail end of the first burner brick is fixedly connected with the first burner body (6);
the first cold air pipe (9) penetrates through the first burner body (6), is fixedly connected with the first backflow baffle (7), and is used for providing combustion-supporting air required by combustion;
the first gas pipe (10) is positioned in the first cold air pipe (9) and is used for spraying natural gas to burn;
the tail end of the first gas pipe (10) is also provided with a first three-way pipe (11) which is used for being communicated with an external gas supply pipeline.
3. The flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device as claimed in claim 2, wherein double waist-shaped through grooves (71) are formed on two sides of the first backflow baffle (7) and are used for cyclone conveying of primary air and staged conveying of secondary air; the first backflow baffle (7) is further provided with an ignition gun (39), an ignition flame detector (40) and a main flame detector (41).
4. The flue gas entrainment type low NOx heat accumulation combustion high temperature heating device according to claim 2, wherein the front end of the first gas pipe (10) is further provided with a first gas nozzle (101) and a first cyclone sheet (102).
5. A flue gas entrainment type low NOx heat storage combustion high temperature heating apparatus as claimed in claim 1, characterized in that said first heat storage means (4) is communicated with said first heat storage burner (2) through a heat storage box riser; the first heat storage device (4) comprises a first heat storage box body (12), a first grid plate (13) and a first heat storage medium (14);
the first grid plate (13) is positioned in the first heat storage box body (12) and divides the first heat storage box body (12) into a first heat storage chamber and a first ash removal chamber;
the first thermal storage medium (14) is located in the first thermal storage chamber and is placed on the first grid plate (13);
the first heat storage box body (12) is also provided with a first filling cover (15), a first goal outlet (16) and a first ash removal door (17);
the first filling cover (15) is positioned on the upper surface of the first heat storage tank body (12) and is used for supplementing the first heat storage medium (14);
the first outlet door (16) is positioned on the side wall of the first heat storage chamber and is used for taking out the first heat storage medium (14);
the first ash removal door (17) is positioned on the side wall of the first ash removal chamber and used for removing ash precipitated in the flue gas.
6. The flue gas entrainment type low NOx regenerative combustion high-temperature heating device according to claim 1, wherein the second regenerative burner (3) comprises a second burner body (20), a second backflow baffle (21), a second burner block (22), a second cold air pipe (23) and a second fuel gas pipe (24);
the second backflow baffle (21) is mounted at the front end of the interior of the second burner body (20) and used for graded conveying of hot air or passing of flue gas after combustion;
the second burner block (22) is fixedly connected with the inner wall of the high-temperature resistant kiln (1), and the tail end of the second burner block is fixedly connected with the second burner body (20);
the second cold air pipe (23) penetrates through the second burner body (20), is fixedly connected with the second backflow baffle (21), and is used for providing combustion-supporting air required by combustion;
the second fuel gas pipe (24) is positioned in the second cold air pipe (23) and is used for spraying natural gas to burn;
and the tail end of the second gas pipe (24) is also provided with a second three-way pipe (25) which is used for being communicated with an external gas supply pipeline.
7. The flue gas entrainment type low NOx regenerative combustion high temperature heating apparatus according to claim 6, wherein a second gas nozzle (241) and a second swirl plate (242) are further provided at a front end of the second gas pipe (24).
8. A flue gas entrainment type low NOx heat storage combustion high temperature heating apparatus as claimed in claim 1, wherein said second heat storage means (5) is communicated with said second heat storage burner (3) through a heat storage box riser; the second heat storage device (5) comprises a second heat storage box body (26), a second grid plate (27) and a second heat storage medium (28);
the second grid plate (27) is positioned in the second heat storage box body (26) and divides the second heat storage box body (26) into a second heat storage chamber and a second ash removal chamber;
the second thermal storage medium (28) is located in the second thermal storage chamber and is placed on the second grid plate (27);
a second filling cover (29), a second goal outlet (30) and a second ash removal door (31) are further arranged on the second heat storage box body (26);
the second filling cover (29) is positioned on the upper surface of the second heat storage tank body (26) and is used for supplementing the second heat storage medium (28);
the second discharging door (30) is positioned on the side wall of the second heat storage chamber and used for discharging the second heat storage medium (28);
the second ash removal door (31) is positioned on the side wall of the second ash removal chamber and used for removing ash precipitated in the flue gas.
9. A flue gas entrainment type low NOx heat storage combustion high temperature heating device as claimed in claim 1, characterized in that the first heat storage device (4) and the second heat storage device (5) are communicated through a smoke exhaust pipe (32), and a first air valve (33), a second air valve (34), a first flue gas valve (35) and a second flue gas valve (36) are mounted on the smoke exhaust pipe (32);
the second air valve (34) and the second flue gas valve (36) are respectively used for air intake and smoke exhaust of the first regenerative burner (2);
the first air valve (33) and the first flue gas valve (35) are used for air intake and smoke exhaust of the second regenerative burner (3), respectively.
10. The flue gas entrainment type low NOx heat storage combustion high-temperature heating device as claimed in claim 1, characterized in that a blower (37) and a smoke exhaust fan (38) are respectively arranged at the tail ends of the first heat storage device (4) and the second heat storage device (5), and the blower (37) and the smoke exhaust fan (38) can be used for combustion supporting or smoke exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| KR100870981B1 (en) * | 2008-05-30 | 2008-12-01 | 주식회사 컴버스텍 | Multi air supplying combustor |
| CN202581336U (en) * | 2012-03-27 | 2012-12-05 | 昆山市超群金属制品有限公司 | Heat-storage combustion device |
| CN104075323A (en) * | 2014-07-09 | 2014-10-01 | 苏州博能炉窑科技有限公司 | Novel combustion flame heating device |
| CN206073077U (en) * | 2016-09-30 | 2017-04-05 | 佛山市科皓燃烧设备制造有限公司 | The low NOx flat flames heat-accumulating burner of grading combustion technology |
| CN109737395A (en) * | 2019-01-25 | 2019-05-10 | 新冶高科技集团有限公司 | A kind of alcohol-based fuel heat-storage type burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100870981B1 (en) * | 2008-05-30 | 2008-12-01 | 주식회사 컴버스텍 | Multi air supplying combustor |
| CN202581336U (en) * | 2012-03-27 | 2012-12-05 | 昆山市超群金属制品有限公司 | Heat-storage combustion device |
| CN104075323A (en) * | 2014-07-09 | 2014-10-01 | 苏州博能炉窑科技有限公司 | Novel combustion flame heating device |
| CN206073077U (en) * | 2016-09-30 | 2017-04-05 | 佛山市科皓燃烧设备制造有限公司 | The low NOx flat flames heat-accumulating burner of grading combustion technology |
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