Clean type pulverized coal combustion equipment and using method
By introducing jet, preheating and pretreatment devices into coal pulverized combustion equipment, the problems of uniform injection of oxygen and grinding of coal pulverized coal are solved, and more efficient and clean coal pulverized combustion is achieved, reducing pollutant emissions.
Patent Information
- Application Number
- CN202411606241.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional coal pulverized combustion equipment cannot evenly inject oxygen during the combustion process, resulting in local hypoxia and incomplete combustion, resulting in large amounts of pollutants.
A clean coal pulverized combustion equipment is designed, including a jet device, a preheating device and a pretreatment device. The jet device sprays oxygen evenly into the combustion furnace through the arc tube and the jet nozzle. The preheating device heats the oxygen using waste heat, and the pretreatment device grinds the coal powder to improve combustion efficiency.
It effectively improves the combustion efficiency of coal powder, avoids incomplete combustion caused by local hypoxia, reduces pollutant emissions, and improves combustion speed and efficiency.
Smart Images
Figure CN119289356A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pulverized coal combustion, and in particular to a clean pulverized coal combustion device and a use method thereof. Background Art
[0002] In today's world, energy demand continues to grow. Coal, as an important energy resource, accounts for a considerable proportion of the global energy structure. However, traditional pulverized coal combustion equipment produces a large amount of pollutants during the combustion process. For example, coal combustion releases sulfur dioxide (SO2), nitrogen oxides (NO X ) and particulate matter (PM). It causes serious harm to the ecological environment and human health. As the world pays more and more attention to environmental protection, countries are formulating strict environmental regulations to limit the emission of pollutants. This has prompted companies and scientific research institutions to look for cleaner coal combustion technologies to reduce pollutant emissions during the combustion process.
[0003] When the existing device burns the pulverized coal, it is impossible to spray oxygen evenly into the combustion furnace, and the pulverized coal cannot obtain sufficient oxygen in all areas of the furnace, which easily leads to local hypoxia and incomplete combustion. Summary of the invention
[0004] In order to solve the above technical problems, the present invention provides: a clean coal powder combustion device and a method of use, comprising: A combustion furnace, wherein an annular reinforcement plate is sleeved and fixedly connected to the outer side of the combustion furnace, a sealing door is rotatably connected to the outer side of the combustion furnace through a rotating bolt, a reinforcement base is fixedly connected to the outer side of the annular reinforcement plate through a bracket, and an igniter is fixedly connected to the top of the annular reinforcement plate through a bracket; An air jet device, through which oxygen is injected into the combustion furnace; A preheating device, which uses waste heat to heat the oxygen entering the combustion furnace; A pre-treatment device, through which the pulverized coal to be burned is ground; The combustion furnace is provided with a material taking port adapted to the sealing door on the outside, one end of the igniter penetrates and extends to the inside of the combustion furnace, the igniter is fixedly connected to the outer wall of the combustion furnace, the jet device penetrates the bottom of the combustion furnace and is fixedly connected to the bottom of the combustion furnace, the preheating device penetrates the outside of the combustion furnace and is connected to the inside of the combustion furnace, and the pretreatment device penetrates the top of the combustion furnace and is fixedly connected to the top of the combustion furnace; Wherein, the jetting device comprises: A heat insulation board, one side of which penetrates and is fixedly connected with an exhaust pipe, the bottom of the exhaust pipe is connected with an arc tube, the bottom of the arc tube is connected with a diverter plate, the bottom of the diverter plate is connected with an intake pipe through a sealed bearing, and the top of the exhaust pipe is connected with an air nozzle. The pulverized coal entering the combustion furnace falls on the heat insulation board, and then the igniter is turned on to ignite the pulverized coal in the combustion furnace and continuously burn the pulverized coal. During the combustion of the pulverized coal, oxygen is pumped into the gas delivery pipe through an oxygen pump, and the oxygen entering the gas delivery pipe enters the intake pipe through a heat preservation frame, and then the oxygen enters the arc tube through the diverter plate, and then enters the exhaust pipe through the arc tube, and finally is sprayed into the combustion furnace from the air nozzle, so that sufficient oxygen can be added to the combustion furnace when the pulverized coal is burning, thereby effectively improving the combustion efficiency of the pulverized coal; The heat preservation frame has an air supply pipe connected to its bottom.
[0005] Preferably, the top of the insulation frame is connected to the bottom of the air inlet pipe, the exhaust pipe and the arc pipe are provided in multiple groups and correspond one to one, and the outer side of the insulation board is rotatably connected to the inner wall of the combustion furnace through a sealed bearing.
[0006] Preferably, the jet device also includes a limit frame, the inner wall of the limit frame is fixedly connected to a ring-shaped electric slide rail, the interior of the ring-shaped electric slide rail is slidably connected to a moving frame via an electric slider, the electric slider inside the ring-shaped electric slide rail drives the moving frame to move, and the moving frame can drive the arc tube to rotate, and the arc tube drives the jet nozzle to rotate, so that oxygen can be evenly sprayed into the combustion furnace, so that the coal powder can get sufficient oxygen in each area of the furnace, avoiding incomplete combustion caused by local lack of oxygen, and the top of the heat insulation board is fixedly connected to an extension column at the center position, the top of the extension column is fixedly connected to a sealing cover, and the outer side of the sealing cover is connected to a discharge frame.
[0007] Preferably, the outer side of the limit frame is fixedly connected to the inner wall of the combustion furnace, the top of the limit frame is set to an opening shape, the limit frame passes through the bottom of the combustion furnace and is fixedly connected to the bottom of the combustion furnace, the air inlet pipe passes through the bottom of the limit frame and is fixedly connected to the bottom of the limit frame, the end of the movable frame away from the annular electric slide rail is fixedly connected to the outer side of the arc tube, and the discharge frame is provided with multiple groups, and the multiple groups of discharge frames are evenly distributed on the outside of the sealing cover.
[0008] Preferably, the preheating device includes a heat conducting pipe, the outer side of which is penetrated by and fixedly connected with heat conducting fins, the bottom of the heat conducting pipe is connected to a discharge pipe, both ends of the heat conducting pipe are connected to connecting plates, the top of the connecting plate is connected to an insulation pipe, the flue gas after the pulverized coal is burned enters the insulation pipe, and is then discharged into the connecting plate through the insulation pipe, the flue gas entering the connecting plate is discharged into the heat conducting pipe, and is finally discharged from the discharge pipe, the flue gas enters the heat conducting pipe and conducts the waste heat to the oxygen inside the insulation frame through the heat conducting fins, the waste heat of the flue gas is used to preheat the oxygen to be discharged into the combustion furnace, and the gas sprayed into the furnace is heated, thereby improving the combustion speed and efficiency of the pulverized coal.
[0009] Preferably, the heat-conducting pipes are provided in multiple groups, and the multiple groups of heat-conducting pipes all pass through the insulation frame and are fixedly connected to the outer wall of the insulation frame. The outer side of the insulation pipe is fixedly connected to the outer wall of the annular reinforcement plate through a bracket, and the end of the insulation pipe away from the connecting plate is connected to the interior of the combustion furnace. The heat-conducting fins are located inside the insulation frame, and the discharge pipe passes through the bottom of the insulation frame and is fixedly connected to the bottom of the insulation frame.
[0010] Preferably, the pretreatment device comprises a treatment frame and a grinding roller, the top of the treatment frame is provided with a feed inlet, the bottom of the treatment frame is connected to a grinding cylinder, the bottom of the grinding cylinder is connected to a discharge nozzle at a central position, the outer side of the discharge nozzle is sleeved and fixedly connected with a partition frame near the bottom, the bottom of the partition frame is provided with a leakage port, the outer side of the treatment frame is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a rotating rod, the bottom of the inner wall of the grinding cylinder is fixedly connected to a sieve plate, the outer side of the grinding roller is provided with annular grooves near both ends, and the inside of the annular groove is rotated by a rotating bracket and the outer wall of the rotating rod. The pulverized coal entering the processing frame falls on the screening plate, and then the driving motor is turned on to drive the rotating rod to rotate. The rotating rod can drive the grinding roller to squeeze and grind the pulverized coal along the screening plate, grinding the pulverized coal particles finer. Smaller pulverized coal particles can be more fully in contact with oxygen, thereby accelerating the combustion reaction. At the same time, the insulation plate is driven by the arc tube to drive the sealing cover to rotate through the extension column. When the sealing cover rotates, it drives the discharge frame to rotate, and the ground pulverized coal passes through the sieve holes of the screening plate and falls into the partition frame. As the discharge frame rotates, the pulverized coal can enter the discharge frame from the leakage port and be discharged into the combustion furnace, so the pulverized coal can be evenly discharged into the combustion furnace.
[0011] Preferably, two groups of feed ports are provided, which are symmetrically distributed on the top of the processing frame, and multiple groups of leakage ports are provided, which are evenly distributed on the bottom of the partition frame. The bottom of the partition frame is located at the center and is rotatably connected to the top of the sealing cover through a bearing. The partition frame passes through the top of the combustion furnace and is fixedly connected to the top of the combustion furnace.
[0012] Preferably, the output end of the driving motor passes through the processing frame and is rotatably connected to the processing frame via a sealed bearing, and the end of the rotating rod away from the driving motor passes through the processing frame and is rotatably connected to the processing frame via a bearing.
[0013] A method for using a clean coal powder combustion device comprises the following steps: S1. Workers process the pulverized coal to be processed through a pre-treatment device and discharge it into a combustion furnace. The pulverized coal entering the combustion furnace falls on a heat insulation board, and then the igniter is turned on to ignite the pulverized coal in the combustion furnace and continue to burn the pulverized coal; S2. Oxygen is pumped into the gas delivery pipe through an oxygen pump. The oxygen in the gas delivery pipe enters the intake pipe through the heat preservation frame, and then enters the arc pipe through the diverter plate, and then enters the exhaust pipe through the arc pipe, and finally sprays into the combustion furnace from the air nozzle; S3, turning on the annular electric slide rail, and driving the moving frame to move through the electric slider inside the annular electric slide rail, so that the moving frame can drive the arc tube to rotate, and the arc tube drives the air nozzle to rotate; S4. The flue gas after the combustion of pulverized coal enters the insulation pipe, and then is discharged into the connecting plate through the insulation pipe. The flue gas entering the connecting plate is discharged into the heat transfer pipe, and finally discharged from the discharge pipe. The flue gas enters the heat transfer pipe and conducts the residual heat to the oxygen inside the insulation frame through the heat transfer fins, and the residual heat of the flue gas is used to preheat the oxygen to be discharged into the combustion furnace; S5. The worker pours the coal powder into the processing frame from the feed port. The coal powder in the processing frame falls on the screening plate. Then the driving motor is turned on to drive the rotating rod to rotate. The rotating rod can drive the grinding roller to squeeze and grind the coal powder along the screening plate. S6. Driven by the arc tube, the heat insulation plate drives the sealing cover to rotate through the extension column. When the sealing cover rotates, the discharge frame is driven to rotate. The ground coal powder passes through the sieve holes of the screening plate and falls into the partition frame. As the discharge frame rotates, the coal powder can enter the discharge frame from the leakage port and be discharged into the combustion furnace.
[0014] The present invention provides a clean coal powder combustion device and a method of use. It has the following beneficial effects: 1. A clean pulverized coal combustion equipment and a method of using the same. By installing an air jet device, the pulverized coal entering the combustion furnace falls on a heat insulation board, and then the igniter is turned on to ignite the pulverized coal in the combustion furnace and continuously burn the pulverized coal. During the combustion of the pulverized coal, oxygen is pumped into the gas pipe through an oxygen pump, and the oxygen entering the gas pipe enters the intake pipe through an insulation frame, and then the oxygen enters the arc tube through a diverter plate, and then enters the exhaust pipe through the arc tube, and finally is sprayed into the combustion furnace from the air jet nozzle, so that sufficient oxygen can be added to the combustion furnace when the pulverized coal is burning, thereby effectively improving the combustion efficiency of the pulverized coal.
[0015] 2. A clean pulverized coal combustion device and a method of using the device, through the installation of the air nozzle and the annular electric slide rail, the electric slider inside the annular electric slide rail drives the moving frame to move, the moving frame can drive the arc tube to rotate, the arc tube drives the air nozzle to rotate, and oxygen can be evenly sprayed into the combustion furnace, so that the pulverized coal can get sufficient oxygen in all areas of the furnace, avoiding incomplete combustion caused by local lack of oxygen.
[0016] 3. This clean pulverized coal combustion equipment and use method, through the installation of a preheating device, the flue gas after the pulverized coal is burned enters the insulation pipe, and then is discharged into the connecting plate through the insulation pipe. The flue gas entering the connecting plate is discharged into the heat transfer pipe and finally discharged from the discharge pipe. The flue gas enters the heat transfer pipe and transfers the residual heat to the oxygen inside the insulation frame through the heat transfer fins. The residual heat of the flue gas is used to preheat the oxygen to be discharged into the combustion furnace, and the gas sprayed into the furnace is heated, thereby improving the combustion speed and efficiency of the pulverized coal.
[0017] 4. A clean coal powder combustion equipment and use method, through the installation of a pretreatment device, the coal powder entering the processing frame falls on the screening plate, and then the driving motor is turned on, and the driving motor drives the rotating rod to rotate, and the rotating rod can drive the grinding roller to squeeze and grind the coal powder along the screening plate, so that the coal powder particles are ground finer, and the smaller coal powder particles can be more fully in contact with oxygen, thereby accelerating the combustion reaction. At the same time, the insulation plate is driven by the arc tube and drives the sealing cover to rotate through the extension column. When the sealing cover rotates, it drives the discharge frame to rotate, and the ground coal powder passes through the sieve holes of the screening plate and falls into the partition frame. As the discharge frame rotates, the coal powder can enter the discharge frame from the leakage port and be discharged into the combustion furnace, and the coal powder can be evenly discharged into the combustion furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A flowchart of the aggregate screening method for producing and processing noise reduction concrete of the present invention; Figure 2 It is a structural schematic diagram of the reinforcement base of the present invention; Figure 3 It is a structural schematic diagram of the annular reinforcement plate of the present invention; Figure 4 It is a schematic diagram of the internal structure of the combustion furnace of the present invention; Figure 5 It is a schematic structural diagram of the heat insulation board of the present invention; Figure 6 It is a structural schematic diagram of the arc tube of the present invention; Figure 7 It is a structural schematic diagram of the diverter plate of the present invention; Figure 8 It is a structural schematic diagram of the thermal insulation pipe of the present invention; Fig. 9 It is a structural schematic diagram of the partition frame of the present invention; Fig.10 It is a schematic diagram of the internal structure of the processing frame of the present invention.
[0019] In the figure: 1, combustion furnace; 2, annular reinforcement plate; 3, sealing door; 4, reinforcement base; 5, igniter; 6, jet device; 61, heat insulation board; 62, exhaust pipe; 63, arc pipe; 64, diverter plate; 65, air inlet pipe; 66, insulation frame; 67, air delivery pipe; 68, jet nozzle; 69, limit frame; 610, annular electric slide rail; 611, mobile frame; 612, extension column; 613, sealing cover ; 614, discharge frame; 7, preheating device; 71, heat pipe; 72, heat fins; 73, discharge pipe; 74, connecting plate; 75, insulation pipe; 8, pretreatment device; 81, treatment frame; 82, feed inlet; 83, grinding cylinder; 84, discharge nozzle; 85, partition frame; 86, leakage port; 87, drive motor; 88, rotating rod; 89, screening plate; 810, grinding roller; 811, annular groove. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.
[0021] Embodiment 1 See also Figure 1-Figure 8 The present invention provides a technical solution: a clean coal powder combustion device, comprising: A combustion furnace 1, an annular reinforcement plate 2 is sleeved and fixedly connected to the outer side of the combustion furnace 1, a sealing door 3 is rotatably connected to the outer side of the combustion furnace 1 through a rotating bolt, a reinforcement base 4 is fixedly connected to the outer side of the annular reinforcement plate 2 through a bracket, and an igniter 5 is fixedly connected to the top of the annular reinforcement plate 2 through a bracket; An injection device 6, through which oxygen is injected into the combustion furnace 1; A preheating device 7, which uses waste heat to heat the oxygen entering the combustion furnace 1; A pre-treatment device 8, wherein the pulverized coal to be burned is ground by the pre-treatment device 8; The outer side of the combustion furnace 1 is provided with a material taking port adapted to the sealing door 3, one end of the igniter 5 penetrates and extends to the inside of the combustion furnace 1, the igniter 5 is fixedly connected to the outer wall of the combustion furnace 1, the jet device 6 penetrates the bottom of the combustion furnace 1 and is fixedly connected to the bottom of the combustion furnace 1, the preheating device 7 penetrates the outer side of the combustion furnace 1 and is connected to the inside of the combustion furnace 1, and the pretreatment device 8 penetrates the top of the combustion furnace 1 and is fixedly connected to the top of the combustion furnace 1; Wherein, the jetting device 6 comprises: A heat shield 61, one side of the heat shield 61 penetrates and is fixedly connected with an exhaust pipe 62, the bottom of the exhaust pipe 62 is connected with an arc pipe 63, the bottom of the arc pipe 63 is connected with a diverter plate 64, the bottom of the diverter plate 64 is connected with an intake pipe 65 through a sealed bearing, and the top of the exhaust pipe 62 is connected with an air nozzle 68; The heat preservation frame 66 has an air supply pipe 67 connected to its bottom.
[0022] The top of the insulation frame 66 is connected to the bottom of the air inlet pipe 65. The exhaust pipe 62 and the arc pipe 63 are provided in multiple groups and correspond one to one. The outer side of the insulation board 61 is rotatably connected to the inner wall of the combustion furnace 1 through a sealed bearing.
[0023] The jet device 6 also includes a limit frame 69, the inner wall of the limit frame 69 is fixedly connected to a ring-shaped electric slide rail 610, the interior of the ring-shaped electric slide rail 610 is slidably connected to a movable frame 611 through an electric slider, the top of the heat insulation plate 61 is fixedly connected to an extension column 612 at the center position, the top of the extension column 612 is fixedly connected to a sealing cover 613, and the outer side of the sealing cover 613 is connected to a discharge frame 614.
[0024] The outer side of the limit frame 69 is fixedly connected to the inner wall of the combustion furnace 1, the top of the limit frame 69 is set to an opening shape, the limit frame 69 passes through the bottom of the combustion furnace 1 and is fixedly connected to the bottom of the combustion furnace 1, the air inlet pipe 65 passes through the bottom of the limit frame 69 and is fixedly connected to the bottom of the limit frame 69, the end of the movable frame 611 away from the annular electric slide rail 610 is fixedly connected to the outer side of the arc tube 63, and a plurality of groups of discharge frames 614 are provided, and the plurality of groups of discharge frames 614 are evenly distributed on the outer side of the sealing cover 613.
[0025] The preheating device 7 includes a heat pipe 71, the outer side of which is penetrated by and fixedly connected with a heat conducting fin 72, the bottom of the heat pipe 71 is connected to a discharge pipe 73, both ends of the heat pipe 71 are connected to a connecting plate 74, and the top of the connecting plate 74 is connected to a heat preservation pipe 75.
[0026] There are multiple groups of heat-conducting pipes 71, and all of the groups of heat-conducting pipes 71 pass through the insulation frame 66 and are fixedly connected to the outer wall of the insulation frame 66. The outer side of the insulation pipe 75 is fixedly connected to the outer wall of the annular reinforcement plate 2 through a bracket. The end of the insulation pipe 75 away from the connecting plate 74 is connected to the interior of the combustion furnace 1. The heat-conducting fins 72 are located inside the insulation frame 66. The discharge pipe 73 passes through the bottom of the insulation frame 66 and is fixedly connected to the bottom of the insulation frame 66.
[0027] When in use, workers process the coal powder to be processed through the pretreatment device 8 and then discharge it into the combustion furnace 1. The coal powder entering the combustion furnace 1 falls on the insulation board 61, and then the igniter 5 is turned on to ignite the coal powder in the combustion furnace 1 and continuously burn the coal powder. During the combustion of the coal powder, oxygen is pumped into the gas pipe 67 through an oxygen pump, and the oxygen entering the gas pipe 67 enters the air intake pipe 65 through the insulation frame 66, and then the oxygen enters the arc tube 63 through the diverter plate 64, and then enters the exhaust pipe 62 through the arc tube 63, and finally sprayed into the combustion furnace 1 from the air nozzle 68, so that sufficient oxygen can be added to the combustion furnace 1 when the coal powder is burning, thereby effectively improving the combustion efficiency of the coal powder.
[0028] When the air nozzle 68 sprays oxygen, the annular electric slide rail 610 is turned on, and the electric slider inside the annular electric slide rail 610 drives the movable frame 611 to move, and the movable frame 611 can drive the arc tube 63 to rotate, and the arc tube 63 drives the air nozzle 68 to rotate, so that oxygen can be evenly sprayed into the combustion furnace 1, so that the coal powder can get sufficient oxygen in each area of the furnace, avoiding incomplete combustion caused by local lack of oxygen.
[0029] The flue gas after the combustion of the pulverized coal enters the insulation pipe 75, and is then discharged into the connecting plate 74 through the insulation pipe 75. The flue gas entering the connecting plate 74 is discharged into the heat conduction pipe 71 and is finally discharged from the discharge pipe 73. The flue gas enters the heat conduction pipe 71 and transfers the residual heat to the oxygen inside the insulation frame 66 through the heat conduction fins 72. The residual heat of the flue gas is used to preheat the oxygen to be discharged into the combustion furnace 1, and the gas sprayed into the furnace is heated, thereby improving the combustion speed and efficiency of the pulverized coal.
[0030] Embodiment 2 See also Figure 1-Figure 10The present invention provides a technical solution: on the basis of embodiment 1, the pretreatment device 8 includes a treatment frame 81 and a grinding roller 810, the top of the treatment frame 81 is provided with a feed port 82, the bottom of the treatment frame 81 is connected with a grinding cylinder 83, the bottom of the grinding cylinder 83 is located at the center and is connected with a discharge nozzle 84, the outer side of the discharge nozzle 84 is sleeved and fixedly connected with a partition frame 85 near the bottom, the bottom of the partition frame 85 is provided with a leakage port 86, the outer side of the treatment frame 81 is fixedly connected with a driving motor 87, the output end of the driving motor 87 is fixedly connected with a rotating rod 88, the inner bottom of the inner wall of the grinding cylinder 83 is fixedly connected with a screening plate 89, the outer side of the grinding roller 810 is provided with annular grooves 811 near both ends, and the inside of the annular groove 811 is rotatably connected to the outer wall of the rotating rod 88 through a rotating bracket.
[0031] There are two groups of feed ports 82, which are symmetrically distributed on the top of the processing frame 81. There are multiple groups of leakage ports 86, which are evenly distributed on the bottom of the partition frame 85. The bottom of the partition frame 85 is located at the center position and is rotatably connected to the top of the sealing cover 613 through a bearing. The partition frame 85 passes through the top of the combustion furnace 1 and is fixedly connected to the top of the combustion furnace 1.
[0032] The output end of the driving motor 87 passes through the processing frame 81 and is rotatably connected to the processing frame 81 through a sealed bearing. The end of the rotating rod 88 away from the driving motor 87 passes through the processing frame 81 and is rotatably connected to the processing frame 81 through a bearing.
[0033] During use, workers pour coal powder into the processing frame 81 from the feed port 82, and the coal powder entering the processing frame 81 falls on the screening plate 89, and then the driving motor 87 is turned on, and the rotating rod 88 is driven by the driving motor 87 to rotate. The rotating rod 88 can drive the grinding roller 810 to squeeze and grind the coal powder along the screening plate 89, and grind the coal powder particles finer. Smaller coal powder particles can be more fully in contact with oxygen, thereby accelerating the combustion reaction. At the same time, the insulation plate 61 drives the sealing cover 613 to rotate through the extension column 612 under the drive of the arc tube 63. When the sealing cover 613 rotates, it drives the discharge frame 614 to rotate, and the ground coal powder passes through the sieve holes of the screening plate 89 and falls into the partition frame 85. As the discharge frame 614 rotates, the coal powder can enter the discharge frame 614 from the leakage port 86 and be discharged into the combustion furnace 1, so that the coal powder can be evenly discharged into the combustion furnace 1.
[0034] Embodiment 3 See also Figure 1 The present invention provides a method for using a clean coal powder combustion device, comprising the following steps: S1. Workers process the pulverized coal to be processed through a pre-treatment device and discharge it into a combustion furnace. The pulverized coal entering the combustion furnace falls on a heat insulation board, and then the igniter is turned on to ignite the pulverized coal in the combustion furnace and continue to burn the pulverized coal; S2. Oxygen is pumped into the gas delivery pipe through an oxygen pump. The oxygen in the gas delivery pipe enters the intake pipe through the heat preservation frame, and then enters the arc pipe through the diverter plate, and then enters the exhaust pipe through the arc pipe, and finally sprays into the combustion furnace from the air nozzle; S3, turning on the annular electric slide rail, and driving the moving frame to move through the electric slider inside the annular electric slide rail, so that the moving frame can drive the arc tube to rotate, and the arc tube drives the air nozzle to rotate; S4. The flue gas after the combustion of pulverized coal enters the insulation pipe, and then is discharged into the connecting plate through the insulation pipe. The flue gas entering the connecting plate is discharged into the heat transfer pipe, and finally discharged from the discharge pipe. The flue gas enters the heat transfer pipe and conducts the residual heat to the oxygen inside the insulation frame through the heat transfer fins, and the residual heat of the flue gas is used to preheat the oxygen to be discharged into the combustion furnace; S5. The worker pours the coal powder into the processing frame from the feed port. The coal powder in the processing frame falls on the screening plate. Then the driving motor is turned on to drive the rotating rod to rotate. The rotating rod can drive the grinding roller to squeeze and grind the coal powder along the screening plate. S6. Driven by the arc tube, the heat insulation plate drives the sealing cover to rotate through the extension column. When the sealing cover rotates, the discharge frame is driven to rotate. The ground coal powder passes through the sieve holes of the screening plate and falls into the partition frame. As the discharge frame rotates, the coal powder can enter the discharge frame from the leakage port and be discharged into the combustion furnace.
[0035] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A clean coal powder combustion equipment, characterized in that: include: A combustion furnace (1), wherein an annular reinforcement plate (2) is sleeved and fixedly connected to the outer side of the combustion furnace (1), a sealing door (3) is rotatably connected to the outer side of the combustion furnace (1) via a rotating bolt, a reinforcement base (4) is fixedly connected to the outer side of the annular reinforcement plate (2) via a bracket, and an igniter (5) is fixedly connected to the top of the annular reinforcement plate (2) via a bracket; An injection device (6) for injecting oxygen into the combustion furnace (1); A preheating device (7), the preheating device (7) utilizing waste heat to heat the oxygen entering the combustion furnace (1); A pre-treatment device (8), wherein the pulverized coal to be burned is ground by the pre-treatment device (8); The combustion furnace (1) is provided with a material taking port adapted to the sealing door (3) on the outside, one end of the igniter (5) passes through and extends into the interior of the combustion furnace (1), the igniter (5) is fixedly connected to the outer wall of the combustion furnace (1), the jet device (6) passes through the bottom of the combustion furnace (1) and is fixedly connected to the bottom of the combustion furnace (1), the preheating device (7) passes through the outside of the combustion furnace (1) and is connected to the interior of the combustion furnace (1), and the pretreatment device (8) passes through the top of the combustion furnace (1) and is fixedly connected to the top of the combustion furnace (1); Wherein, the jetting device (6) comprises: a heat insulation board (61), one side of the heat insulation board (61) being penetrated by and fixedly connected to an exhaust pipe (62), the bottom of the exhaust pipe (62) being connected to an arc-shaped pipe (63), the bottom of the arc-shaped pipe (63) being connected to a diverter plate (64), the bottom of the diverter plate (64) being connected to an intake pipe (65) via a sealing bearing, and the top of the exhaust pipe (62) being connected to an air nozzle (68); A heat preservation frame (66), wherein the bottom of the heat preservation frame (66) is connected to an air delivery pipe (67).
2. A clean pulverized coal combustion device according to claim 1, characterized in that: The top of the heat-insulating frame (66) is connected to the bottom of the air inlet pipe (65), the exhaust pipe (62) and the arc-shaped pipe (63) are provided in multiple groups and correspond one to one, and the outer side of the heat-insulating plate (61) is rotatably connected to the inner wall of the combustion furnace (1) via a sealed bearing.
3. A clean pulverized coal combustion device according to claim 1, characterized in that: The jetting device (6) further comprises a limit frame (69), the inner wall of the limit frame (69) being fixedly connected to an annular electric slide rail (610), the interior of the annular electric slide rail (610) being slidably connected to a movable frame (611) via an electric slider, the top of the heat insulation board (61) being fixedly connected to an extension column (612) at a central position, the top of the extension column (612) being fixedly connected to a sealing cover (613), and the outer side of the sealing cover (613) being connected to a discharge frame (614).
4. A clean pulverized coal combustion device according to claim 3, characterized in that: The outer side of the limit frame (69) is fixedly connected to the inner wall of the combustion furnace (1); the top of the limit frame (69) is arranged to be open; the limit frame (69) passes through the bottom of the combustion furnace (1) and is fixedly connected to the bottom of the combustion furnace (1); the air inlet pipe (65) passes through the bottom of the limit frame (69) and is fixedly connected to the bottom of the limit frame (69); one end of the movable frame (611) away from the annular electric slide rail (610) is fixedly connected to the outer side of the arc tube (63); and a plurality of discharge frames (614) are arranged, and the plurality of discharge frames (614) are evenly distributed on the outer side of the sealing cover (613).
5. The clean pulverized coal combustion equipment according to claim 1, characterized in that: The preheating device (7) comprises a heat conducting pipe (71), the outer side of the heat conducting pipe (71) being penetrated by and fixedly connected with a heat conducting fin (72), the bottom of the heat conducting pipe (71) being connected to a discharge pipe (73), both ends of the heat conducting pipe (71) being connected to a connecting plate (74), and the top of the connecting plate (74) being connected to a heat preservation pipe (75).
6. A clean pulverized coal combustion device according to claim 5, characterized in that: The heat-conducting pipes (71) are provided in a plurality of groups, and the plurality of groups of the heat-conducting pipes (71) all pass through the heat-insulating frame (66) and are fixedly connected to the outer wall of the heat-insulating frame (66). The outer side of the heat-insulating pipe (75) is fixedly connected to the outer wall of the annular reinforcing plate (2) via a bracket. The end of the heat-insulating pipe (75) away from the connecting plate (74) is connected to the interior of the combustion furnace (1). The heat-conducting fins (72) are located inside the heat-insulating frame (66). The discharge pipe (73) passes through the bottom of the heat-insulating frame (66) and is fixedly connected to the bottom of the heat-insulating frame (66).
7. A clean pulverized coal combustion device according to claim 3, characterized in that: The pretreatment device (8) comprises a treatment frame (81) and a grinding roller (810); a feed port (82) is provided at the top of the treatment frame (81); a grinding cylinder (83) is connected to the bottom of the treatment frame (81); a discharge nozzle (84) is connected to the bottom of the grinding cylinder (83) at a central position; a partition frame (85) is sleeved and fixedly connected to the outer side of the discharge nozzle (84) near the bottom; a discharge port (86) is provided at the bottom of the partition frame (85); a drive motor (87) is fixedly connected to the outer side of the treatment frame (81); a rotating rod (88) is fixedly connected to the output end of the drive motor (87); a screening plate (89) is fixedly connected to the bottom of the inner wall of the grinding cylinder (83); annular grooves (811) are provided on the outer side of the grinding roller (810) near both ends; the inside of the annular groove (811) is rotatably connected to the outer wall of the rotating rod (88) via a rotating bracket.
8. A clean pulverized coal combustion device according to claim 7, characterized in that: Two groups of feed ports (82) are provided, and the two groups of feed ports (82) are symmetrically distributed at the top of the processing frame (81). Multiple groups of leakage ports (86) are provided, and the multiple groups of leakage ports (86) are evenly distributed at the bottom of the partition frame (85). The bottom of the partition frame (85) is located at the center and is rotatably connected to the top of the sealing cover (613) through a bearing. The partition frame (85) passes through the top of the combustion furnace (1) and is fixedly connected to the top of the combustion furnace (1).
9. A clean pulverized coal combustion device according to claim 7, characterized in that: The output end of the driving motor (87) passes through the processing frame (81) and is rotatably connected to the processing frame (81) via a sealed bearing, and the end of the rotating rod (88) away from the driving motor (87) passes through the processing frame (81) and is rotatably connected to the processing frame (81) via a bearing.
10. A method for using a clean coal powder combustion device, characterized in that: The following steps are involved: S1. Workers process the pulverized coal to be processed through a pre-treatment device and discharge it into a combustion furnace. The pulverized coal entering the combustion furnace falls on a heat insulation board, and then the igniter is turned on to ignite the pulverized coal in the combustion furnace and continue to burn the pulverized coal; S2. Oxygen is pumped into the gas delivery pipe through an oxygen pump. The oxygen in the gas delivery pipe enters the intake pipe through the heat preservation frame, and then enters the arc pipe through the diverter plate, and then enters the exhaust pipe through the arc pipe, and finally sprays into the combustion furnace from the air nozzle; S3, turning on the annular electric slide rail, and driving the moving frame to move through the electric slider inside the annular electric slide rail, so that the moving frame can drive the arc tube to rotate, and the arc tube drives the air nozzle to rotate; S4. The flue gas after the combustion of pulverized coal enters the insulation pipe, and then is discharged into the connecting plate through the insulation pipe. The flue gas entering the connecting plate is discharged into the heat transfer pipe, and finally discharged from the discharge pipe. The flue gas enters the heat transfer pipe and conducts the residual heat to the oxygen inside the insulation frame through the heat transfer fins, and the residual heat of the flue gas is used to preheat the oxygen to be discharged into the combustion furnace; S5. The worker pours the coal powder into the processing frame from the feed port. The coal powder in the processing frame falls on the screening plate. Then the driving motor is turned on to drive the rotating rod to rotate. The rotating rod can drive the grinding roller to squeeze and grind the coal powder along the screening plate. S6. Driven by the arc tube, the heat insulation plate drives the sealing cover to rotate through the extension column. When the sealing cover rotates, the discharge frame is driven to rotate. The ground coal powder passes through the sieve holes of the screening plate and falls into the partition frame. As the discharge frame rotates, the coal powder can enter the discharge frame from the leakage port and be discharged into the combustion furnace.