Low-carbon energy-saving multi-channel low-nitrogen burner for carbide slag cement rotary kiln

Abstract

The utility model discloses a low-carbon energy-saving multi-channel low-nitrogen burner for a carbide slag cement rotary kiln, which comprises an outer air cylinder, a mixing cylinder fixedly mounted at one end of the outer side of the outer air cylinder, a connecting cylinder fixedly mounted at one end of the outer side of the mixing cylinder, an inner air cylinder fixedly mounted in the outer air cylinder, a pulverized coal gas channel fixedly mounted in the inner air cylinder, and a pulverized coal gas channel fixedly mounted in the inner air cylinder. An oil conveying pipe is fixedly installed in the pulverized coal gas channel, a drainage baffle ring is fixedly installed at one end of the outer air cylinder, and an inner air pipe opening is fixedly formed in the outer side of the inner air cylinder. Through the drainage block and the drainage baffle ring, pulverized coal gas ejected from the front end of the pulverized coal gas channel can be quickly diffused into the mixing barrel through the drainage block, and then local resistance loss of the channel can be reduced through the drainage baffle ring, so that the energy consumption of a fan is reduced; and direct-flow gas and rotational-flow gas sprayed out of the outer air cylinder and the inner air cylinder can form rotational flow to be rapidly mixed, so that a large amount of fuel is not needed for combustion during ignition, and the energy consumption cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-nitrogen burners for cement rotary kilns, and in particular relates to a low-carbon, energy-saving, multi-channel low-nitrogen burner for carbide slag cement rotary kiln. Background Art

[0002] The rotary kiln low nitrogen burner is an important equipment for controlling pollutant emissions from industrial fuel boilers. By adjusting the combustion air and the burner head, the stable combustion and combustion of the fuel are ensured. The high-temperature flue gas environment in the rotary kiln is very conducive to the generation of thermal nitrogen. The comprehensive utilization of carbide slag in the cement clinker production line can effectively utilize the waste carbide slag, which not only reduces the land for accumulation, but also reduces the pollution of the surrounding environment by waste carbide slag. It also reduces the pollution control costs of upstream enterprises. In addition, the composition of carbide slag is uniform, and it only needs to be dried to become a cement calcium raw material. The current pre-drying "dry grinding and dry burning" process uses a vertical mill to dry and grind the batch material.

[0003] When in use, the residence time of high-temperature flue gas in the rotary kiln is sufficient to generate a large amount of nitrogen. The existing low-carbon, energy-saving, multi-channel, low-nitrogen burners for cement rotary kilns are generally composed of two air ducts and a gas powder channel, with a swirler arranged in between. During ignition, a large-capacity oil gun is used to heat the furnace or maintain it above the ignition temperature of the coal. Then, coal powder is added into the furnace through a coal powder burner for combustion, which consumes a large amount of fuel and increases energy consumption costs. The lack of channels and independent adjustment devices causes the multi-channel burners to be unable to cooperate well with each other and cannot adjust the flame peak temperature well, making it inconvenient to use. Based on this, we propose a low-carbon, energy-saving, multi-channel, low-nitrogen burner for carbide slag cement rotary kiln. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a low-carbon, energy-saving, multi-channel, low-nitrogen burner for carbide slag cement rotary kiln, which solves the problem that the existing low-carbon, energy-saving, multi-channel, low-nitrogen burners for mud rotary kilns need to consume a large amount of fuel during combustion, increase energy consumption costs, and have no independent adjustment device and cannot well adjust the flame peak temperature.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln, comprising an outer wind cylinder, a mixing cylinder is fixedly installed at one end of the outer side of the outer wind cylinder, a connecting cylinder is fixedly installed at one end of the outer side of the mixing cylinder, an inner wind cylinder is fixedly installed inside the outer wind cylinder, a pulverized coal gas channel is fixedly installed inside the inner wind cylinder, an oil pipeline is fixedly installed inside the pulverized coal gas channel, a drainage baffle ring is fixedly installed at one end of the outer wind cylinder, an inner air duct opening is fixedly installed on the outer side of the inner wind cylinder, one end of the inner air duct opening is connected to an inner air connecting pipe, an inner air regulating valve is fixedly installed on the top surface of the inner air connecting pipe, an adjusting bolt A is movably installed on the top of the inner air regulating valve, the outer air duct opening is fixedly installed on the outer side of the outer wind cylinder, One end of the external air duct outlet is connected with an external air connecting pipe, one end of the external air connecting pipe is fixedly installed with a ventilation pipe, an external air regulating valve is fixedly installed on the top surface of the external air connecting pipe, and an adjusting bolt B is movably installed on the top of the external air regulating valve, a connecting pipe is fixedly installed at one end of the ventilation pipe, a micro-blower is fixedly installed at one end of the connecting pipe, an oil pipe interface is fixedly installed on the outside of the pulverized coal gas channel, a heat insulation layer is fixedly installed on the outside of the pulverized coal gas channel, a drainage tube is fixedly installed on the outside of the insulation layer, a plurality of drainage holes are opened inside the drainage tube, an ignition fuel injector is fixedly installed at one end of the oil pipeline, a drainage block is fixedly installed on the outside of the ignition fuel injector, four fixed blocks are fixedly installed on the outside of the drainage block, and a pulverized coal gas inlet is fixedly installed at one end of the oil pipeline.

[0006] Preferably, one end of the inner air duct passes through the inner side of the outer air duct and extends to the outer side of the outer air duct, one end of the inner air connecting pipe is fixedly installed on the outer side of the ventilation pipe, and one end of the pulverized coal gas channel passes through the inner side of the inner air duct and extends to the outer side of the inner air duct.

[0007] The above technical solution has the advantage of being convenient for separately and quantitatively controlling the outer air duct, the inner air duct and the pulverized coal gas channel, and being convenient for independently adjusting their flow rates.

[0008] Preferably, the bottom end thread of the adjusting bolt A passes through the top surface of the inner air regulating valve and extends to the inside of the inner air connecting pipe, and the bottom end thread of the adjusting bolt B passes through the top surface of the outer air regulating valve and extends to the inside of the outer air connecting pipe.

[0009] The above technical solution has the advantage that the wind force flowing through the inner wind connecting pipe can be controlled by rotating the adjusting bolt A through the inner wind regulating valve, and the wind force flowing through the outer wind connecting pipe can be controlled by rotating the adjusting bolt B through the outer wind regulating valve, so that the multi-channel burners can cooperate with each other better.

[0010] Preferably, the outer side of the drainage tube is closely attached to the inner side of the inner wind tube, and the plurality of drainage holes are distributed in a circular spiral inside the drainage tube.

[0011] The above technical solution has the advantage that the wind entering the inner wind tube can disperse the pulverized coal gas by the rotating inner wind flow through the drainage holes in the drainage tube, so that the pulverized coal gas is mixed more fully.

[0012] Preferably, the drainage block is conical, one end of each of the four fixed blocks is fixedly mounted on the inner side of the pulverized coal gas channel, and one end of the drainage block movably passes through one end of the pulverized coal gas channel and extends to the inside of the drainage baffle ring.

[0013] The above technical solution has the advantage that the position of the guide block can be fixed, and the conical guide block can quickly diffuse the pulverized coal gas flowing in the pulverized coal gas channel to the interior of the mixing cylinder to mix with the airflow of the outer and inner wind cylinders.

[0014] Preferably, one end of the ignition fuel injector penetrates one end of the guide block and extends to the inside of the guide baffle ring, and one end of the oil delivery pipe penetrates one end of the pulverized coal gas channel and extends to the inside of the pulverized coal gas inlet.

[0015] The above technical solution has the advantage that it is convenient to transport the fuel from the pulverized gas inlet outside the device through the oil pipeline to the ignition fuel injector for ignition and combustion, which is convenient for use.

[0016] Preferably, the drainage baffle ring is fixedly installed inside the mixing cylinder, and the diameter of the opening end of the drainage baffle ring is the same as the diameter of the front end of the drainage cylinder.

[0017] The above technical solution has the advantage that the local resistance loss of the channel can be reduced by the guide baffle ring, so that the energy consumption of the fan is reduced, and the inclined angle of the inside of the guide baffle ring can also form a vortex for the wind in the outer wind tube and the inner wind tube.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. Through the connection tube provided, when in use, the user fixes it on one end of the rotary kiln through the connection tube, and then starts the micro-blower to inject air into the interior of the ventilation duct through the connecting tube, and then injects air from the external air connection tube through the external air duct opening to the interior of the external air duct, and at the same time, injects air from the internal air connection tube through the internal air duct opening to the interior of the internal air duct. At this time, the air injected into the interior of the external air duct passes through the drainage baffle ring to reduce the local resistance loss of the channel, so that the energy consumption of the fan is reduced, and the direct current air is gathered at the front end of the internal air duct. At the same time, the air injected into the interior of the internal air duct is sprayed out in a rotating manner through the drainage hole, and then the pulverized coal gas is transported to the interior of the pulverized coal gas channel through the oil pipe interface, and then the pulverized coal gas passes through the drainage block to quickly diffuse the pulverized coal gas to the interior of the mixing cylinder. When the pulverized coal gas is ejected, it will be dispersed by the rotating inner air ejected from the inner air cylinder. Then the guide baffle ring can also form a swirl with the wind in the outer air cylinder and the inner air cylinder to make the fly ash evenly mixed and circulate to the inside of the mixing cylinder. After evenly mixing, the fuel is input through the oil pipe and ejected through the ignition nozzle for ignition and combustion. After mixing, the concentration of pulverized coal inside the mixing cylinder will be reduced, so that the production of harmful gas nitrogen can be reduced after ignition and combustion. Then, the wind flow rate of the inner air connecting pipe and the outer air connecting pipe is adjusted by rotating the inner air regulating valve and the adjusting bolt B to control the wind strength of the outer air cylinder and the inner air cylinder, so as to adjust the mixed concentration of the internal pulverized coal gas, so that multiple channels can cooperate with each other to adjust the peak temperature of the flame, which is easy to use and practical.

[0020] 2. Through the set drainage block and drainage baffle ring, the pulverized coal gas sprayed from the front end of the pulverized coal gas channel can be quickly diffused into the interior of the mixing cylinder through the drainage block, and then the local resistance loss of the channel can be reduced through the drainage baffle ring, thereby reducing the energy consumption of the fan. It can also form a swirl for the direct current gas and swirl gas sprayed from the outer wind tube and the inner wind tube to form a swirl for rapid mixing, so that a large amount of fuel is not required for combustion during ignition, reducing energy consumption costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the front appearance structure of the utility model;

[0023] Figure 3 It is a front cross-sectional structural schematic diagram of the utility model;

[0024] Figure 4 It is a side sectional structural schematic diagram of the utility model.

[0025] In the figure: 1. outer air cylinder; 2. mixing cylinder; 3. connecting cylinder; 4. inner air cylinder; 5. pulverized coal gas channel; 6. pulverized coal gas inlet; 7. oil pipe interface; 8. micro blower; 9. connecting pipe; 10. ventilation pipe; 11. inner air connecting pipe; 12. inner air regulating valve; 13. adjusting bolt A; 14. outer air connecting pipe; 15. outer air regulating valve; 16. adjusting bolt B; 17. outer air duct opening; 18. drainage baffle ring; 19. drainage cylinder; 20. drainage hole; 21. fixing block; 22. drainage block; 23. ignition fuel injector; 24. oil pipeline; 25. thermal insulation layer; 26. inner air duct opening. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the implementation scheme of the utility model to clearly and completely describe the technical scheme in the implementation scheme of the utility model. Obviously, the described implementation scheme is only a part of the implementation scheme of the utility model, not all the implementation schemes. Based on the implementation scheme in the utility model, all other implementation schemes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 4 As shown, a low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln comprises an outer wind tube 1, a mixing tube 2 is fixedly mounted on one end of the outer side of the outer wind tube 1, a connecting tube 3 is fixedly mounted on one end of the outer side of the mixing tube 2, an inner wind tube 4 is fixedly mounted inside the outer wind tube 1, a pulverized coal gas channel 5 is fixedly mounted inside the inner wind tube 4, an oil pipeline 24 is fixedly mounted inside the pulverized coal gas channel 5, a drainage baffle ring 18 is fixedly mounted on one end of the outer wind tube 1, an inner wind pipe opening 26 is fixedly mounted on the outer side of the inner wind tube 4, one end of the inner wind pipe opening 26 is connected with an inner wind connecting pipe 11, an inner wind regulating valve 12 is fixedly mounted on the top surface of the inner wind connecting pipe 11, an adjusting bolt A13 is movably mounted on the top of the inner wind regulating valve 12, an outer wind pipe opening 17 is fixedly mounted on the outer side of the outer wind tube 1, one end of the outer wind pipe opening 17 is connected with an outer wind connecting pipe 14, a ventilation pipe 10 is fixedly installed at one end of the external air connecting pipe 14, an external air regulating valve 15 is fixedly installed on the top surface of the external air connecting pipe 14, and an adjusting bolt B16 is movably installed on the top of the external air regulating valve 15, a connecting pipe 9 is fixedly installed at one end of the ventilation pipe 10, and a micro-blower 8 is fixedly installed at one end of the connecting pipe 9, an oil pipe interface 7 is fixedly installed on the outer side of the pulverized coal gas channel 5, a heat insulation layer 25 is fixedly installed on the outer side of the pulverized coal gas channel 5, a drainage tube 19 is fixedly installed on the outer side of the heat insulation layer 25, and a plurality of drainage holes 20 are opened inside the drainage tube 19, an ignition fuel injector 23 is fixedly installed at one end of the oil delivery pipe 24, a drainage block 22 is fixedly installed on the outer side of the ignition fuel injector 23, and four fixed blocks 21 are fixedly installed on the outer side of the drainage block 22, and a pulverized coal gas inlet 6 is fixedly installed at one end of the oil delivery pipe 24.

[0028] The working principle of the above technical solution is as follows:

[0029] When in use, the user fixes it on one end of the rotary kiln through the connecting tube 3, and then starts the micro-blower 8 to inject wind into the interior of the ventilation pipe 10 through the connecting tube 9, and then injects wind from the external wind connecting tube 14 through the external wind pipe opening 17 into the interior of the external wind tube 1, and at the same time injects wind from the internal wind connecting tube 11 through the internal wind pipe opening 26 into the interior of the internal wind tube 4. At this time, the wind injected into the interior of the external wind tube 1 passes through the drainage baffle ring 18 to reduce the local resistance loss of the channel, so that the energy consumption of the fan is reduced, and the direct current wind is gathered at the front end of the internal wind tube 4. At the same time, the wind injected into the interior of the internal wind tube 4 is rotated and ejected through the drainage hole 20, and then the pulverized coal gas is transported to the interior of the pulverized coal gas channel 5 through the oil pipe interface 7, and then the pulverized coal gas passes through the drainage block 22 to quickly diffuse the pulverized coal gas to the interior of the mixing tube 2. At this time, the pulverized coal gas is As soon as the coal gas is ejected, it will be dispersed by the rotating inner air ejected from the inner air tube 4. Then the guide baffle ring 18 can also form a swirl with the wind in the outer air tube 1 and the inner air tube 4 to make the fly ash evenly mixed and circulated to the inside of the mixing tube 2. After even mixing, the fuel is input through the oil pipe 24 and ejected through the ignition nozzle 23 for ignition and combustion. After mixing, the concentration of pulverized coal inside the mixing tube 2 will be reduced, so that the production of harmful gas nitrogen can be reduced after ignition and combustion. Then, the wind flow rate of the inner air connecting pipe 11 and the outer air connecting pipe 14 is adjusted by rotating the inner air regulating valve 12 and the adjusting bolt B16 to control the wind strength of the outer air tube 1 and the inner air tube 4, so as to adjust the mixed concentration of the internal pulverized coal gas, so that the multiple channels can cooperate with each other to adjust the peak temperature of the flame, which is easy to use and has good practicality.

[0030] In another embodiment, Figure 1-Figure 4 As shown, one end of the inner wind tube 4 passes through the inner side of the outer wind tube 1 and extends to the outer side of the outer wind tube 1, one end of the inner wind connecting pipe 11 is fixedly installed on the outer side of the ventilation pipe 10, and one end of the pulverized coal gas channel 5 passes through the inner side of the inner wind tube 4 and extends to the outer side of the inner wind tube 4.

[0031] It is convenient to separately carry out quantitative control on the outer air duct 1, the inner air duct 4 and the pulverized coal gas channel 5, and to independently adjust the flow rates thereof.

[0032] In another embodiment, Figure 1-Figure 4 As shown, the bottom end thread of the adjusting bolt A13 passes through the top surface of the inner air regulating valve 12 and extends to the inside of the inner air connecting pipe 11 , and the bottom end thread of the adjusting bolt B16 passes through the top surface of the outer air regulating valve 15 and extends to the inside of the outer air connecting pipe 14 .

[0033] By rotating the adjusting bolt A13, the wind force flowing through the inner wind connecting pipe 11 can be controlled through the inner wind regulating valve 12. By rotating the adjusting bolt B16, the wind force flowing through the outer wind connecting pipe 14 can be controlled through the outer wind regulating valve 15, so that the multi-channel burners can cooperate with each other better.

[0034] In another embodiment, Figure 1-Figure 4 As shown, the outer side of the drainage tube 19 is closely attached to the inner side of the inner air tube 4 , and a plurality of drainage holes 20 are distributed in the drainage tube 19 in a circular spiral.

[0035] The wind entering the inner wind tube 4 can disperse the pulverized coal gas by the rotating inner wind flow through the drainage holes 20 in the drainage tube 19, so that the pulverized coal gas is mixed more fully.

[0036] In another embodiment, Figure 1-Figure 4 As shown, the drainage block 22 is conical, one end of each of the four fixed blocks 21 is fixedly installed on the inner side of the pulverized coal gas channel 5 , and one end of the drainage block 22 movably passes through one end of the pulverized coal gas channel 5 and extends to the inside of the drainage baffle ring 18 .

[0037] The position of the guide block 22 can be fixed, and the conical guide block 22 can quickly diffuse the pulverized coal gas flowing in the pulverized coal gas channel 5 into the interior of the mixing cylinder 2 to mix with the airflow of the outer wind cylinder 1 and the inner wind cylinder 4, which is easy to use.

[0038] In another embodiment, Figure 1-Figure 4 As shown, one end of the ignition fuel injector 23 penetrates one end of the guide block 22 and extends to the inside of the guide baffle ring 18 , and one end of the oil delivery pipe 24 penetrates one end of the pulverized coal gas channel 5 and extends to the inside of the pulverized coal gas inlet 6 .

[0039] It is convenient to transport fuel from the pulverized coal gas inlet 6 outside the device through the oil pipe 24 to the ignition fuel injector 23 for ignition and combustion, which is convenient for use.

[0040] In another embodiment, Figure 1-Figure 4 As shown, the drainage baffle ring 18 is fixedly installed inside the mixing cylinder 2, and the diameter of the opening end of the drainage baffle ring 18 is the same as the front end diameter of the drainage cylinder 19.

[0041] The guide baffle ring 18 can reduce the local resistance loss of the channel, thereby reducing the energy consumption of the fan. The inner inclination angle of the guide baffle ring 18 can also form a swirl for the wind in the outer wind tube 1 and the inner wind tube 4.

[0042] The working principle and use process of the utility model are as follows: when in use, the user fixes the connecting tube 3 to one end of the rotary kiln, then starts the micro blower 8 to inject air into the interior of the ventilation pipe 10 through the connecting pipe 9, and then injects air from the external air connecting pipe 14 through the external air pipe opening 17 into the interior of the external air duct 1, and at the same time injects air from the internal air connecting pipe 11 through the internal air pipe opening 26 into the interior of the internal air duct 4. At this time, the air injected into the interior of the external air duct 1 passes through the drainage baffle ring 18 to reduce the local resistance loss of the channel, so that the fan energy consumption is reduced. The DC wind is gathered at the front end of the inner wind tube 4, and the wind injected into the inner wind tube 4 is sprayed out in a rotating manner through the drainage hole 20, and then the pulverized coal gas is transported to the inside of the pulverized coal gas channel 5 through the oil pipe interface 7, and then the pulverized coal gas is quickly diffused into the inside of the mixing tube 2 through the drainage block 22. At this time, the pulverized coal gas will be dispersed by the rotating internal wind gas sprayed from the inner wind tube 4 as soon as it is sprayed out, and then the drainage baffle ring 18 can also form a vortex with the wind in the outer wind tube 1 and the inner wind tube 4, so that the fly ash is evenly mixed and circulated to the mixing tube 2 After uniform mixing inside, fuel is input through the oil pipe 24 and sprayed out through the ignition nozzle 23 for ignition and combustion. After mixing, the pulverized coal concentration inside the mixing tube 2 will be reduced, so that the production of harmful gas nitrogen can be reduced after ignition and combustion. Then, the wind flow rate of the inner wind connecting pipe 11 and the outer wind connecting pipe 14 is adjusted by rotating the inner wind regulating valve 12 and the adjusting bolt B16 to control the wind strength of the outer wind tube 1 and the inner wind tube 4, so that the mixed concentration of the internal pulverized coal gas can be adjusted, and multiple channels can cooperate with each other to adjust the flame peak temperature, which is easy to use and has good practicality. Through the set guide block 22 and guide baffle ring 18, the pulverized coal gas sprayed from the front end of the pulverized coal gas channel 5 can be quickly diffused to the inside of the mixing tube 2 through the guide block 22, and then the local resistance loss of the channel can be reduced through the guide baffle ring 18, so that the energy consumption of the fan is reduced, and the direct current gas and swirl gas sprayed from the outer wind tube 1 and the inner wind tube 4 can be quickly mixed into a swirl, so that a large amount of fuel is not required for combustion during ignition, thereby reducing energy consumption costs.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln, comprising an outer air duct (1), characterized in that: A mixing cylinder (2) is fixedly mounted on one end of the outer side of the outer wind cylinder (1), a connecting cylinder (3) is fixedly mounted on one end of the outer side of the mixing cylinder (2), an inner wind cylinder (4) is fixedly mounted inside the outer wind cylinder (1), a pulverized coal gas passage (5) is fixedly mounted inside the inner wind cylinder (4), an oil delivery pipe (24) is fixedly mounted inside the pulverized coal gas passage (5), a flow guide baffle ring (18) is fixedly mounted on one end of the outer wind cylinder (1), and a connecting cylinder (3) is fixedly mounted on the outer side of the inner wind cylinder (4). An inner air duct opening (26) is provided, one end of the inner air duct opening (26) is connected to an inner air connecting pipe (11), an inner air regulating valve (12) is fixedly mounted on the top surface of the inner air connecting pipe (11), an adjusting bolt A (13) is movably mounted on the top of the inner air regulating valve (12), an outer air duct opening (17) is fixedly mounted on the outer side of the outer air cylinder (1), one end of the outer air duct opening (17) is connected to an outer air connecting pipe (14), one end of the outer air connecting pipe (14) is fixedly mounted A ventilation pipe (10) is installed, an external air regulating valve (15) is fixedly installed on the top surface of the external air connecting pipe (14), an adjusting bolt B (16) is movably installed on the top of the external air regulating valve (15), a connecting pipe (9) is fixedly installed on one end of the ventilation pipe (10), a micro blower (8) is fixedly installed on one end of the connecting pipe (9), an oil pipe interface (7) is fixedly installed on the outside of the pulverized coal gas channel (5), and a heat insulation A layer (25), a drainage tube (19) is fixedly mounted on the outside of the heat insulation layer (25), a plurality of drainage holes (20) are opened inside the drainage tube (19), an ignition fuel injector (23) is fixedly mounted on one end of the oil delivery pipe (24), a drainage block (22) is fixedly mounted on the outside of the ignition fuel injector (23), four fixed blocks (21) are fixedly mounted on the outside of the drainage block (22), and a pulverized coal gas inlet (6) is fixedly mounted on one end of the oil delivery pipe (24).

2. The low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln according to claim 1, characterized in that: One end of the inner wind tube (4) passes through the inner side of the outer wind tube (1) and extends to the outer side of the outer wind tube (1); one end of the inner wind connecting pipe (11) is fixedly mounted on the outer side of the ventilation pipe (10); and one end of the pulverized coal gas passage (5) passes through the inner side of the inner wind tube (4) and extends to the outer side of the inner wind tube (4).

3. The low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln according to claim 1, characterized in that: The bottom end thread of the adjusting bolt A (13) penetrates the top surface of the internal air regulating valve (12) and extends to the inside of the internal air connecting pipe (11), and the bottom end thread of the adjusting bolt B (16) penetrates the top surface of the external air regulating valve (15) and extends to the inside of the external air connecting pipe (14).

4. The low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln according to claim 1, characterized in that: The outer side of the drainage tube (19) is in close contact with the inner side of the inner wind tube (4), and the plurality of drainage holes (20) are distributed in a circular spiral inside the drainage tube (19).

5. The low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln according to claim 1, characterized in that: The drainage block (22) is conical in shape, one end of each of the four fixed blocks (21) is fixedly mounted on the inner side of the pulverized coal gas channel (5), and one end of the drainage block (22) movably penetrates one end of the pulverized coal gas channel (5) and extends to the interior of the drainage baffle ring (18).

6. The low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln according to claim 1, characterized in that: One end of the ignition oil nozzle (23) penetrates one end of the guide block (22) and extends to the interior of the guide baffle ring (18), and one end of the oil delivery pipe (24) penetrates one end of the pulverized coal gas channel (5) and extends to the interior of the pulverized coal gas inlet (6).

7. The low-carbon, energy-saving, multi-channel, low-nitrogen burner for a carbide slag cement rotary kiln according to claim 1, characterized in that: The drainage baffle ring (18) is fixedly mounted inside the mixing cylinder (2); the diameter of the opening end of the drainage baffle ring (18) is the same as the diameter of the front end of the drainage cylinder (19).

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