Special low-nitrogen combustion process for garbage incinerator

Abstract

The invention relates to the technical field of garbage incinerators, in particular to a special low-nitrogen combustion process for a garbage incinerator, which comprises the following steps: pushing a furnace door plate to seal a feed port of a furnace body, driving a supporting plate to slide into a concave arc rod, and enabling the supporting plate to decline towards the inner end; the multiple incineration boxes slide to the lower end of the supporting plate, and then the multiple incineration boxes are separated at equal intervals under the combined action of connection of the multiple movable plates and limiting of the step grooves; at the moment, a plurality of combustors on one side of the incinerator body are started to spray fire into the incineration box to fully combust the garbage, and meanwhile, a fan on the other side of the incinerator body is started to intermittently extract air to the outside. The incineration set is supported by the arranged storage set, when garbage is added, the incinerator door plate is pulled outwards to drive the multiple incineration boxes to move out of the incinerator body, in the process, the supporting plate is warped upwards through guiding of the convex arc rod, the multiple incineration boxes are close to the incinerator door plate, and concentrated garbage adding is facilitated; and the low-nitrogen combustion environment is prevented from being damaged by air entering when garbage is added.

Description

Technical Field

[0001] This invention relates to the field of waste incinerator technology, specifically a low-NOx combustion process for waste incinerators. Background Technology

[0002] A waste incinerator is a closed system for burning waste. If coal is used as fuel, it easily produces nitrogen oxides (NOx) during high-temperature combustion, polluting the air, necessitating the addition of a purification chamber. Current methods use fuels with lower nitrogen (N) content as fuel for incinerators, combined with a burner to ignite the waste, thereby achieving fuel denitrification, such as using clean natural gas as fuel. Furthermore, reducing the excess air coefficient lowers the oxygen concentration around the fuel, thus reducing the generation of thermal NO.

[0003] However, in low oxygen concentrations, incomplete combustion is more likely to occur, which prolongs the combustion time and consumes more fuel. In addition, when adding garbage midway, opening the furnace door can easily cause a drop in temperature and the replenishment of air, which can disrupt the low-oxygen combustion environment inside the furnace. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the purpose of this invention is to provide a low-NOx combustion process specifically for waste incinerators, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a low-NOx combustion process specifically for waste incinerators, comprising the following steps:

[0006] S1. First, pull the furnace door panel at the furnace inlet outwards, which will cause the support plate to slide onto the convex arc rod.

[0007] S2. Next, the end of the pallet placed inside the furnace body is tilted upward, causing several pairs of incinerators on the pallet to slide toward the furnace door and move closer together.

[0008] S3. Once the pallet moves the sealing plate to seal the feed inlet of the furnace body, the waste can be poured into several incineration chambers.

[0009] S4. Push the furnace door plate to seal the furnace body's feed inlet, and drive the pallet to slide into the concave arc rod, causing the pallet to tilt downwards towards the inward end;

[0010] S5. Several incinerators slide to the lower end of the pallet, and then, under the combined action of the connection of several movable plates and the limiting action of the stepped groove, the several incinerators are separated at equal intervals.

[0011] S6. At this time, start several burners on one side of the furnace body to spray flames into the incineration chamber to fully burn the garbage, and at the same time start the fan on the other side of the furnace body to intermittently draw air out to the outside.

[0012] The device includes a furnace body for incinerating waste. A blower is installed on one side of the furnace body, and several burners are installed on the other side. The front side of the furnace body has a feed inlet with a storage assembly. This assembly includes a furnace door panel, a support plate hinged to the inner bottom of the furnace door panel, a sealing plate tightly engaged with the inner end of the support plate, and concave and convex arc rods spaced vertically. The bottom sides of the sealing plate have extension sections that are slidably connected to the concave and convex arc rods. An incineration assembly is attached to the support plate. This assembly includes several incineration chambers and several movable plates connecting two incineration chambers. The inner wall of the top side of the support plate has multi-segmented stepped grooves, and the wide side of each incineration chamber has several plate openings symmetrically arranged and communicating with its interior.

[0013] As a further improvement to this technical solution, the top surface of the pallet is provided with several ash leakage grooves at equal intervals. The ash leakage grooves extend along the length of the pallet and their cross-section is an inverted trapezoid. The bottom surface of the pallet has an arched notch structure in the middle. The bottom of the inner wall of the furnace door plate is symmetrically provided with a ring. One end of the pallet is provided with a rotating platform that is rotatably connected to the ring through a long axis.

[0014] As a further improvement to this technical solution, the extension sections on both sides of the bottom of the sealing plate are sliding columns. The concave arc rod and the convex arc rod are embedded in the bottom inner wall of the furnace body and are symmetrically distributed. The two ends of the concave arc rod are provided with guide rods extending horizontally, and one end of the convex arc rod is rotatably connected to a guide slider.

[0015] As a further improvement to this technical solution, the guide block is close to the inner end of the furnace body and its bottom end overlaps with the top surface of the guide rod, and the bottom of the inner wall of the furnace body is provided with a support platform that is integrally engaged with the concave arc rod.

[0016] As a further improvement to this technical solution, the bottom edge of the feed inlet of the furnace body is lower than the guide rod, and the top edge of the feed inlet is higher than the incinerator.

[0017] As a further improvement to this technical solution, an ash discharge port is provided below the feed inlet of the furnace body, the bottom end of the furnace door plate extends to the bottom of the ash discharge port, a sleeve frame is provided on the bottom outer side of the sealing plate, a vertical section extends downward from the bottom of the outer side of the sleeve frame, and the sliding column is embedded in the bottom of the vertical section of the sleeve frame.

[0018] As a further improvement to this technical solution, a ash discharge plate is fitted inside the frame. The bottom width of the ash discharge plate is the same as the width of the ash discharge port, and it is engaged with a pair of support platforms and can slide. The height of the narrow section of the ash discharge plate is greater than the height of the position of the convex arc rod.

[0019] As a further improvement to this technical solution, the long side of the pallet is symmetrically provided with a limiting platform, the cross-section of the limiting platform is inverted L-shaped and a stepped groove is provided on the inner wall of the limiting platform, and the bottom wide side of the incinerator is provided with an insert strip that is inserted into the limiting platform.

[0020] As a further improvement to this technical solution, the lateral depth of the stepped groove gradually decreases from the outer end to the inner end of the tray. The incinerator near the outer end of the tray is tightly engaged, the insert of the second incinerator is engaged with the first section of the stepped groove, and the remaining incinerators are engaged with the remaining cavities of the stepped groove.

[0021] As a further improvement to this technical solution, the bottom plate of the incinerator has a honeycomb structure, and there are locking blocks at the upper and lower corners of the inner side of the plate opening. The length of the movable plate is equal to the width of the two incinerators. The sides of the movable plate are provided with horizontal sliding grooves. One movable plate is engaged with two plate openings of the same height. The upper sliding groove is engaged with the upper locking block, and the lower sliding groove is engaged with the lower locking block.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The waste incinerator uses a special low-NOx combustion process. The incineration unit is supported by a set of support groups. When adding waste, the outer furnace door is pulled to move several incineration boxes out of the furnace body. During this process, the support plate is tilted upward by the guide of the convex arc rod, so that several incineration boxes are close to the furnace door, which is conducive to the centralized addition of waste. At the same time, the sealing plate is used to block the furnace body feed port to prevent air from entering when adding waste and thus destroying the low-NOx combustion environment.

[0024] 2. The waste incinerator uses a special low-NOx combustion process. By pushing the furnace door plate into the furnace body, the support plate tilts downwards under the guidance of the concave arc rod, causing several incineration boxes to slide and disperse. They are then positioned and spaced apart by the limit of the stepped groove, preventing the accumulation of waste, ensuring complete combustion, and reducing the continuous use of fuel.

[0025] 3. The waste incinerator uses a special low-NOx combustion process. The ash discharge plate moves with the sealing plate to discharge ash to the ash discharge port. The ash discharge plate can slide up and down on the side of the sealing plate to ensure that when the support plate is raised, the ash discharge plate will automatically descend by its own weight to contact the bottom of the furnace body to continue discharging ash. This allows the ash discharge process to be completed while adding waste. Attached Figure Description

[0026] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the storage unit in the pulled-out state of the present invention;

[0029] Figure 3 This is a schematic diagram of the furnace body structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the incineration unit in its deployed state according to the present invention;

[0031] Figure 5 This is a schematic diagram of the internal structure of the furnace body of the present invention;

[0032] Figure 6 This is a front view of the storage unit in the pulled-out state according to the present invention;

[0033] Figure 7 This is a front view of the incineration unit in its collapsed state according to the present invention;

[0034] Figure 8 This is a schematic diagram of the incineration unit in its collapsed state according to the present invention;

[0035] Figure 9 This is an exploded view of the incinerator and movable plate of the present invention;

[0036] Figure 10 This is a schematic diagram of the pallet structure of the present invention;

[0037] Figure 11 This is a schematic diagram of the sealing plate structure of the present invention;

[0038] Figure 12 This is a schematic diagram of the combined state of the concave arc rod and the convex arc rod of the present invention;

[0039] Figure 13 This is a schematic diagram of the dust-blocking block assembly structure of the present invention;

[0040] Figure 14 This is a split view of the sealing plate of the present invention.

[0041] The meanings of the labels in the diagram are as follows:

[0042] 100. Furnace body; 101. Flame nozzle; 102. Support platform; 103. Ash discharge port; 104. Rotary handle; 110. Clean room; 120. Fan;

[0043] 200. Storage assembly; 210. Furnace door panel; 211. Roller; 212. Push handle; 220. Support plate; 221. Ash trough; 222. Limiting platform; 223. Step groove; 224. Rotating platform; 230. Sealing plate; 231. Sleeve frame; 232. Sliding column; 240. Concave arc rod; 241. Guide rod; 250. Convex arc rod; 251. Guide slider;

[0044] 260. Dust-blocking block; 2601. Clearance edge; 2602. Insert plate; 261. Support rod; 2611. Clamping block; 270. Dust discharge plate;

[0045] 300. Incineration unit; 310. Incineration box; 311. Plate opening; 312. Locking block; 313. Insert bar; 320. Movable plate; 321. Slide groove. Detailed Implementation

[0046] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, and these should all be considered to fall within the scope of the invention. The terms "installation" and "connection" should be interpreted broadly, referring to direct connection or indirect connection through an intermediate medium.

[0047] The terms "central axis," "vertical," "horizontal," "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0048] Please see Figures 1-14 As shown, the present invention provides a low-NOx combustion process specifically for waste incinerators, comprising the following steps:

[0049] S1. First, pull the furnace door plate 210 at the feed inlet of the furnace body 100 outward, and drive the support plate 220 to slide onto the convex arc rod 250.

[0050] S2. Next, the end of the pallet 220 placed inside the furnace body 100 is tilted upward, causing several pairs of incinerators 310 on the pallet 220 to slide toward the furnace door plate 210 and move closer together; making it easier to dump garbage in a concentrated manner.

[0051] S3. When the pallet 220 drives the sealing plate 230 to seal the feed inlet of the furnace body 100, the waste can be poured into several incineration boxes 310 to avoid the temperature inside the furnace body 100 dropping when adding waste.

[0052] S4. Push the furnace door plate 210 to seal the feed inlet of the furnace body 100, and drive the support plate 220 to slide into the concave arc rod 240, causing the support plate 220 to tilt downwards towards the inward end;

[0053] S5. Several incineration boxes 310 slide towards the lower end of the support plate 220. Then, under the combined action of the connection of several movable plates 320 and the limiting action of the stepped groove 223, the several incineration boxes 310 are separated at equal intervals, so that the waste is burned in a dispersed manner and avoids incomplete combustion due to accumulation.

[0054] S6. At this time, several burners on one side of the furnace body 100 are started to spray flames into the incineration box 310 to fully burn the garbage. At the same time, the blower 120 on the other side of the furnace body 100 is started to intermittently draw air out to the outside; that is, to allow the garbage to burn fully in a low-oxygen environment and reduce the generation of nitrogen oxides.

[0055] Specifically, the furnace body 100 is used to incinerate the waste. A blower 120 is installed on one side of the furnace body 100, and several burners are installed on the other side of the furnace body 100. The burners are existing technology and use natural gas as fuel to reduce nitrogen content and remove nitrogen at the source. Several flame holes are opened on one side of the furnace body 100 to be aligned with the flame pipes of the burners. A purification chamber 110 for filtering and treating flue gas is set on the top of the furnace body 100. This is existing technology and will not be described in detail here.

[0056] The front side of the furnace body 100 is provided with a feed inlet and a storage assembly 200 is provided at the feed inlet. The storage assembly 200 includes a furnace door panel 210, a support plate 220 hinged to the inner bottom of the furnace door panel 210, a sealing plate 230 tightly engaged with the inner end of the support plate 220, and concave arc rods 240 and convex arc rods 250 arranged at intervals. Rollers 211 are symmetrically installed on the outer bottom of the furnace door panel 210 for rolling support and pushing of the furnace door panel 210 when in contact with the ground. Rotary handles 104 are embedded on the two outer sides of the feed inlet of the furnace body 100. A push handle 212 is horizontally placed in the middle of the outer side of the furnace door panel 210 and engaged with the rotary handles 104, so that the furnace door panel 210 seals the feed inlet.

[0057] Furthermore, the bottom sides of the sealing plate 230 are provided with extension sections, which are slidably connected to the concave arc rod 240 and the convex arc rod 250. A dust-blocking block 260 is engaged inside the concave arc rod 240, and a support rod 261 is embedded between the inner walls of the convex arc rod 250. The dust-blocking block 260 is an arc block with a clearance edge at the top corner facing the feed inlet, so that the extension section at the bottom of the sealing plate 230 can be engaged with the bottom arc surface of the dust-blocking block 260 from the clearance edge and slide along the concave arc rod 240, that is, automatically lift the dust-blocking block 260. When the extension section slides out of the arc surface of the concave arc rod 240, the dust-blocking block 260 falls down due to its weight and blocks the arc cavity of the concave arc rod 240 to prevent dust from entering.

[0058] Furthermore, the top surface of the dust block 260 is provided with an insert plate 2602, and the side of the support rod 261 is symmetrically provided with clamping blocks 2611 that engage with the insert plate 2602, thereby restricting the up and down movement of the dust block 260.

[0059] Specifically, an incineration assembly 300 is attached to the pallet 220. The incineration assembly 300 includes several incineration boxes 310 and several movable plates 320 connecting two incineration boxes 310. The inner wall of the top side of the pallet 220 is provided with a multi-segment stepped groove 223 to limit the position of the incineration boxes 310 on the pallet 220 and separate the waste for complete combustion. Several plate openings 311 are symmetrically provided on the wide side of the incineration box 310 and communicate with its interior, so that the flame sprayed by the burner aimed at the incineration box 310 enters through the plate openings 311 to burn the waste.

[0060] Specifically, the top surface of the pallet 220 is provided with several ash-leaking grooves 221 at equal intervals. The ash-leaking grooves 221 extend along the length of the pallet 220 and their cross-section is an inverted trapezoid. They are used for ash leakage and ensure that large particles can only leak down after they have been burned and turned into ash. The bottom surface of the pallet 220 has an arched notch structure in the middle so that when the pallet 220 tilts down, this arched notch does not interfere with the bottom plate of the feed inlet. The bottom of the inner wall of the furnace door plate 210 is symmetrically provided with rings, and one end of the pallet 220 is provided with a rotating platform 224 that is rotatably connected to the rings through a long axis.

[0061] Furthermore, all components of the storage unit 200 and the incineration unit 300 are made of ceramic-clad iron to achieve strength and heat resistance.

[0062] Furthermore, the extension sections on both sides of the bottom of the sealing plate 230 are sliding columns 232. The concave arc rod 240 and the convex arc rod 250 are embedded in the bottom inner wall of the furnace body 100 and are symmetrically distributed to guide the back and forth movement of the sliding column 232. The two ends of the concave arc rod 240 are horizontally extended with guide rods 241, and one end of the convex arc rod 250 is rotatably connected to a guide slider 251. The guide slider 251 is close to the inner end of the furnace body 100 and its bottom end overlaps with the top surface of the guide rod 241. That is, when the concave arc rod 240 slides into the guide rod 241 located below the guide slider 251, the sliding column 232 automatically pushes open the guide slider 251 to pass through.

[0063] When the sliding column 232 retracts, it slides along the guide slider 251 into the convex arc rod 250 and automatically changes its trajectory, causing the inner end of the support plate 220 to tilt up, causing several incineration boxes 310 to move closer together, thereby the movable plate 320 blocks the plate openings 311 of the same height of the two incineration boxes 310 so that the incineration boxes 310 can be filled with garbage outside the furnace body 100.

[0064] It is worth noting that the bottom of the inner wall of the furnace body 100 is provided with a support platform 102 that is integrally connected with the concave arc rod 240, thereby sealing the space below the guide rod 241 and preventing the burnt ash from being discharged into the interior, which would make cleaning difficult; the bottom edge of the feed inlet of the furnace body 100 is lower than the guide rod 241, so that the arched notch at the bottom of the support plate 220 can pass smoothly; the top edge of the feed inlet of the furnace body 100 is higher than the incinerator 310, so that the approach and dispersion of the incinerator 310 when passing through the feed inlet are not interfered with.

[0065] Specifically, an ash discharge port 103 is provided below the feed inlet of the furnace body 100, and the bottom end of the furnace door panel 210 extends to the bottom of the ash discharge port 103 to seal and insulate the heat; a frame 231 is provided on the bottom outer side of the sealing plate 230, and a vertical section extends downward from the bottom surface of the outer side of the frame 231, and a sliding column 232 is embedded in the bottom of the vertical section of the frame 231.

[0066] A ash discharge plate 270 is fitted inside the frame 231. The bottom width of the ash discharge plate 270 is the same as the width of the ash discharge port 103, and it is engaged with a pair of support platforms 102 and can slide, so that all the ash at the bottom of the furnace body 100 is discharged. The height of the narrow section of the ash discharge plate 270 is greater than the height of the position of the convex arc rod 250. When the inner end of the support plate 220 is raised, the bottom of the ash discharge plate 270 will leave the bottom surface of the furnace body 100. In order to ensure that the ash discharge plate 270 always discharges ash, the ash discharge plate 270 and the frame 231 are set to increase the sliding area, so that it can fall to the bottom surface of the furnace body 100 due to its own weight.

[0067] Specifically, the long side of the pallet 220 is symmetrically provided with a limiting platform 222. The cross-section of the limiting platform 222 is inverted L-shaped and a stepped groove 223 is provided on the inner wall of the limiting platform 222. The bottom wide side of the incinerator 310 is provided with an insert strip 313 that is inserted into the limiting platform 222.

[0068] The lateral depth of the stepped groove 223 gradually decreases from the outer end to the inner end of the support plate 220. The incinerator 310 near the outer end of the support plate 220 is tightly engaged. The insert 313 of the second incinerator 310 engages with the first section of the stepped groove 223. The remaining incinerators 310 engage with the remaining cavities of the stepped groove 223. In other words, the insert 313 at the bottom of the incinerators 310 at different positions has a different protruding width. This ensures that when several incinerators 310 slide toward the furnace door plate 210, they can all come together. When several incinerators 310 slide toward the sealing plate 230 and disperse, they are successively limited to maintain the spacing, which satisfies the range of the movable plate 320's unfolding. This allows the plate opening 311 to be opened automatically, so that the waste inside the incinerator 310 can be burned.

[0069] It is worth noting that the bottom plate of the incinerator 310 has a honeycomb structure to allow ash to leak out; the inner side of the plate opening 311 is equipped with locking blocks 312 at the upper and lower corners; the length of the movable plate 320 is equal to the width of the two incinerators 310; the sides of the movable plate 320 are provided with horizontal sliding grooves 321, one movable plate 320 engages with two plate openings 311 of the same height, the upper sliding groove 321 engages with the upper locking block 312, and the lower sliding groove 321 engages with the lower locking block 312; so that when the two incinerators 310 are brought together, one movable plate 320 can block the two plate openings 311 of the same height.

[0070] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A low nitrogen combustion process for waste incinerator, characterized in that: It comprises the following steps: S1, first pull the furnace door plate (210) at the feed inlet of the furnace body (100) outward to drive the supporting plate (220) to slide on the convex arc rod (250); S2, then drive the supporting plate (220) to be placed on one end inside the furnace body (100) to tilt upward, so as to make several pairs of incineration boxes (310) on the supporting plate (220) slide to the furnace door plate (210) and close together; S3, when the supporting plate (220) drives the sealing plate (230) to seal the feed inlet of the furnace body (100), the garbage and waste can be poured into several incineration boxes (310); S4, then push the furnace door plate (210) to seal the feed inlet of the furnace body (100), and drive the supporting plate (220) to slide into the concave arc rod (240), so as to make the supporting plate (220) tilt inward; S5, several incineration boxes (310) slide to the low end of the supporting plate (220), and then under the joint action of the connection of several movable plates (320) and the limiting of the stepped groove (223), several incineration boxes (310) are separated at equal intervals; S6, at this time, start several combustion machines on one side of the furnace body (100) to spray fire into the incineration boxes (310) to fully burn the garbage, and at the same time, start the fan (120) on the other side of the furnace body (100) to intermittently draw air from the outside; It comprises using the furnace body (100) to incinerate garbage, one side of the furnace body (100) is provided with a fan (120), the other side of the furnace body (100) is provided with several combustion machines; the front side of the furnace body (100) is provided with a feed inlet, and the feed inlet is provided with a placing group (200), the placing group (200) comprises a furnace door plate (210), a supporting plate (220) hinged to the bottom inner side of the furnace door plate (210), a sealing plate (230) tightly clamped with the inner end of the supporting plate (220), and a concave arc rod (240) and a convex arc rod (250) arranged in an upper and lower interval; the bottom of the sealing plate (230) is provided with an extension on both sides and the extension is slidably connected with the concave arc rod (240) and the convex arc rod (250); the supporting plate (220) is clamped with an incineration group (300), the incineration group (300) comprises several incineration boxes (310) and several movable plates (320) connecting two incineration boxes (310), and a stepped groove (223) is formed in the top surface side wall of the supporting plate (220), and the wide side surface of the incineration box (310) is symmetrically provided with several plate openings (311) connected with the inside.

2. The process for low NOx combustion in waste incinerator as claimed in claim 1 wherein: The top surface of the supporting plate (220) is provided with several ash leakage grooves (221) at equal intervals, the ash leakage grooves (221) extend along the length direction of the supporting plate (220) and the cross section thereof is inverted trapezoidal, the bottom surface of the supporting plate (220) is provided with an arched notch structure in the middle, the inner wall bottom of the furnace door plate (210) is symmetrically provided with a circular ring, and one end of the supporting plate (220) is provided with a rotating table (224) rotatably connected with the circular ring through a major axis.

3. The process for low NOx combustion specific to waste incinerator as claimed in claim 2 wherein: The extension section arranged at the bottom of the sealing plate (230) is a slide column (232), the concave arc rod (240) and the convex arc rod (250) are embedded in the inner wall of the bottom of the furnace body (100) and are symmetrically distributed, the two ends of the concave arc rod (240) are horizontally extended and provided with guide rods (241), and one end of the convex arc rod (250) is rotationally connected with a guide sliding block (251).

4. The process for low NOx combustion specific to waste incinerator as claimed in claim 3 wherein: The guide sliding block (251) is close to the inner end of the furnace body (100), and the bottom end thereof is overlapped with the top surface of the guide rod (241), and the inner wall bottom of the furnace body (100) is provided with a supporting table (102) which is integrally clamped with the concave arc rod (240).

5. The process for low NOx combustion specific to waste incinerator as claimed in claim 4 wherein: The bottom edge of the feeding port of the furnace body (100) is lower than the guide rod (241), and the top edge of the feeding port is higher than the incineration box (310).

6. The process for low NOx combustion specific to waste incinerator as claimed in claim 5 wherein: The furnace door plate (210) extends to below the ash discharge port (103), and the bottom outer side surface of the sealing plate (230) is provided with a sleeve frame (231), the outer side edge bottom surface of the sleeve frame (231) is downwardly extended and provided with a vertical section, and the slide column (232) is embedded in the bottom of the vertical section of the sleeve frame (231).

7. The process for low NOx combustion specific to waste incinerator as claimed in claim 6 wherein: The sleeve frame (231) is provided with an ash discharge plate (270), the bottom width of the ash discharge plate (270) is the same as the width of the ash discharge port (103), and the ash discharge plate (270) is clamped with a pair of supporting tables (102) and is slidable, and the height of the narrow section of the ash discharge plate (270) is greater than the height of the position where the convex arc rod (250) is located.

8. The process for low NOx combustion specific to waste incinerator as claimed in claim 7 wherein: The long edge top surface of the supporting plate (220) is symmetrically provided with a limiting table (222), the cross section of the limiting table (222) is inverted L-shaped, and a stepped groove (223) is arranged on the inner wall of the limiting table (222), and the bottom wide edge of the incineration box (310) is protrusively provided with an insertion strip (313) which is inserted with the limiting table (222).

9. The process for low NOx combustion specific to waste incinerator as claimed in claim 8 wherein: The transverse depth of the stepped groove (223) gradually decreases from the outer end to the inner end of the supporting plate (220), wherein the incineration box (310) close to the outer end of the supporting plate (220) is in a tightly clamped state, the insertion strip (313) of the second incineration box (310) is clamped with the first section of the stepped groove (223) in advance, and the remaining incineration boxes (310) are clamped with the remaining groove cavities of the stepped groove (223).

10. The process for low NOx combustion specific to waste incinerator as claimed in claim 9 wherein: The bottom plate of the incineration box (310) is in a honeycomb structure, the inner side surface of the plate opening (311) is provided with a clamping block (312) at the upper and lower corners, the length of the movable plate (320) is equal to the width of two incineration boxes (310), and the side surface of the movable plate (320) is provided with a transverse sliding groove (321) upward and downward, one movable plate (320) is clamped with two plate openings (311) of the same height, the sliding groove (321) located at the upper side is clamped with the clamping block (312) located at the upper side, and the sliding groove (321) located at the lower side is clamped with the clamping block (312) located at the lower side.

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