A high-efficiency dry deacidification device for waste incineration power generation furnace

Abstract

The present application relates to environmental protection equipment technical field, especially to a kind of garbage incineration power generation furnace outside high-efficiency dry method deacidification device.The technical problem is that existing furnace outside dry method deacidification device is prone to material accumulation, plugging phenomenon, leading to unstable supply of deacidification agent, uneven distribution of powder in flue, affecting deacidification quality and efficiency.A kind of garbage incineration power generation furnace outside high-efficiency dry method deacidification device, including base, base is equipped with mounting bracket, smoke pipe and control box, mounting bracket is equipped with conveying motor, lime storage and screw feeder pipe, lime storage and screw feeder pipe are communicated, and screw feeder pipe is rotatably connected with spiral winding leaf.High-pressure gas-solid two-phase flow is sprayed to rotating umbrella after impact, and rotating umbrella will rotate under the action of impact force, so that lime powder is better sprayed in smoke pipe, and through this way, lime powder can be sprayed more evenly and can more fully react with harmful substances in waste gas, so as to improve the denitration quality and efficiency of waste gas.

Description

Technical Field

[0001] This invention relates to the field of environmental protection equipment technology, and in particular to a high-efficiency dry deacidification device for waste incineration power generation furnaces. Background Technology

[0002] With the continuous increase in the amount of municipal solid waste generated, waste-to-energy incineration technology has been widely used due to its advantages such as volume reduction, harmlessness, and resource utilization. During waste incineration, chlorine, sulfur, and fluorine-containing components in the waste, under high temperatures, produce acidic gases such as hydrogen chloride (HCl), sulfur dioxide (SO2), and hydrogen fluoride (HF). If these acidic gases are directly emitted without effective treatment, they will not only pollute the atmospheric environment but also corrode subsequent flue gas treatment equipment, affecting the safe and stable operation of the waste incineration system. Therefore, in the process of purifying waste incineration flue gas, a deacidification system is usually required to treat the acidic gases.

[0003] Currently, waste incineration flue gas desulfurization processes mainly include wet desulfurization, semi-dry desulfurization, and dry desulfurization. Dry desulfurization typically uses hydrated lime powder as a desulfurizing agent. The hydrated lime powder is injected into the flue gas duct via a pneumatic conveying system, where it neutralizes the acidic gases in the flue gas, thus achieving desulfurization. Due to its advantages such as simple equipment structure, low investment cost, small footprint, and convenient operation and maintenance, this process is widely used in small and medium-sized waste-to-energy incineration projects and external flue gas purification systems.

[0004] However, existing dry deacidification devices outside the furnace still have many shortcomings in actual operation. On the one hand, hydrated lime powder is a fine-particle powder material with poor flowability, easy moisture absorption and agglomeration, and a tendency to bridging and blockage. Material accumulation and blockage are prone to occur in the storage bins, feeding mechanisms, and conveying pipelines, leading to unstable supply of deacidifying agent and affecting deacidification efficiency. On the other hand, most existing injection devices adopt single-point injection or simple multi-point injection structures, resulting in uneven distribution of powder in the flue. This easily leads to problems such as excessively high or insufficient local concentrations, resulting in low utilization of deacidifying agent and insufficient contact between acidic gas and deacidifying agent, thus affecting the overall deacidification effect. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings, the technical problem of the present invention is to provide a high-efficiency dry desulfurization device for waste incineration power generation that enables the spraying of quicklime powder to be more uniform and to react more fully with harmful substances in the waste gas, thereby improving the denitrification quality and efficiency of the waste gas.

[0006] The technical solution of this invention is as follows: a high-efficiency dry desulfurization device for waste incineration power generation furnaces, comprising a base, a mounting frame, a flue pipe, and a control box on the base, a conveying motor, a quicklime storage bin, and a spiral feed pipe on the mounting frame, the quicklime storage bin and the spiral feed pipe being connected, a spiral conveying blade being rotatably connected inside the spiral feed pipe, the output shaft of the conveying motor being connected to the spiral conveying blade, a diversion and pressure stabilizing box being provided on the flue pipe, flexible corrugated connecting pipes being provided on both the diversion and pressure stabilizing box and the spiral feed pipe, an anti-sticking and wear-resistant conveying pipe being connected between the two flexible corrugated connecting pipes, an air inlet being provided on both the anti-sticking and wear-resistant conveying pipe and the diversion and pressure stabilizing box, and a spraying component, an auxiliary component, and a powder equalization component being provided on the flue pipe.

[0007] Furthermore, the injection assembly includes a rotating disk, a rotating disk is installed inside the flue, six injection pipes are evenly arranged on the rotating disk, each of the six injection pipes is equipped with an accelerating nozzle, a gas delivery chamber is provided on the flue, the six accelerating nozzles are all connected to the inside of the gas delivery chamber, six powder delivery pipes are provided on the diversion and pressure stabilizing box, corrugated connecting hoses are provided on the powder delivery pipes and the accelerating nozzles, and bends are connected between the corrugated connecting hoses, and a rotating umbrella disk is rotatably connected to the injection pipe.

[0008] Furthermore, the auxiliary components include a pull rod, with a pull rod provided on each bend. The pull rod and the rotating disk are slidably connected. A return spring is connected between the pull rod and the rotating disk. A drive motor is provided on the smoke pipe. A spur gear is provided on the output shaft of the drive motor. A gear ring is rotatably connected to the rotating disk. A corrugated ring is provided on the gear ring. The spur gear and the gear ring mesh.

[0009] Furthermore, all six tie rods are in contact with the troughs of the bellows ring.

[0010] Furthermore, the powder distribution component includes a threaded baffle, and the distribution and pressure stabilizing box is equipped with a threaded baffle and a perforated plate. The perforated plate is equipped with two conical hoppers, and the distribution and pressure stabilizing box is equipped with six guide grooves.

[0011] Furthermore, the conical hoppers on both perforated plates have their smaller openings facing the perforated plate.

[0012] Furthermore, all six guide slots have their larger openings facing the perforated plate and their smaller openings facing the powder conveying pipe.

[0013] Furthermore, it also includes a powder arch-breaking component. The powder arch-breaking component is installed inside the hydrated lime storage silo. The powder arch-breaking component includes an installation frame. The installation frame is rotatably connected to the installation frame. The cam rod extends out of the hydrated lime storage silo and is rotatably connected to the spiral feed pipe. A transmission component is connected between the spiral conveyor blade and the cam rod. An arch-breaking cone is slidably connected to the installation frame. A tension spring is connected between the installation frame and the arch-breaking cone.

[0014] Furthermore, it also includes floating seats. The mounting frame is equipped with two floating seats, each of which is fitted with a support plate. Both support plates are connected to the anti-stick and wear-resistant conveying pipe, and four floating springs are connected between the support plates and the floating seats.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The gas-solid two-phase flow entering the acceleration nozzle will be passed into the injection pipe and sprayed onto the rotating umbrella disc through the injection port of the injection pipe. After the high-pressure gas-solid two-phase flow is sprayed onto the rotating umbrella disc, it will be impacted and dispersed. The rotating umbrella disc will rotate under the action of the impact force, thereby better spraying the slaked lime powder into the flue pipe. In this way, the slaked lime powder can be sprayed more evenly and react more fully with the harmful substances in the exhaust gas, thereby improving the denitrification quality and efficiency of the exhaust gas.

[0016] 2. The movement of the bend will pull the corrugated connecting hose, causing the corrugated connecting hose to stretch. After the tie rod and the corrugated ring crest separate, the return spring drives the tie rod to return to its original position. The return of the tie rod drives the bend and the corrugated connecting hose to return to their original positions. This reciprocating motion causes the bend to vibrate slightly, which can prevent the accumulation of quicklime powder at the bend corner, thereby reducing maintenance costs and improving work efficiency.

[0017] 3. When the arch-breaking cone is impacted, it will extend out of the mounting frame, the tension spring will be stretched, the cam rod will continue to rotate and disengage from the arch-breaking cone, the tension spring will reset and drive the arch-breaking cone to reset. This process repeats, and the arch-breaking cone will move back and forth. During the movement of the arch-breaking cone, it will push against the hydrated lime powder near the connection between the hydrated lime storage bin and the screw feed pipe, thereby preventing the hydrated lime powder from caking at the connection, which is conducive to the hydrated lime powder falling more smoothly into the screw feed pipe and improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the spiral conveyor blade of the present invention.

[0020] Figure 3 This is a cross-sectional three-dimensional structural diagram of the flue pipe of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the gas delivery chamber and powder delivery pipe of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the jet pipe and rotating umbrella disc of the present invention.

[0023] Figure 6 This is a cross-sectional three-dimensional structural diagram of the injection pipe and acceleration nozzle of the present invention.

[0024] Figure 7 For the present invention Figure 4A magnified three-dimensional structural diagram at point A in the middle.

[0025] Figure 8 This is a three-dimensional structural diagram of the threaded baffle, conical bucket, and perforated plate of the present invention.

[0026] Figure 9 This is a cross-sectional three-dimensional structural diagram of the slaked lime storage silo of the present invention.

[0027] Figure 10 This is a cross-sectional three-dimensional structural diagram of the mounting frame of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Base; 2. Mounting bracket; 3. Quicklime storage bin; 4. Spiral feed pipe; 5. Conveyor motor; 6. Spiral conveyor blade; 7. Flexible corrugated connecting pipe; 8. Anti-stick and wear-resistant conveying pipe; 9. Smoke pipe; 10. Diverter and pressure stabilizing box; 11. Control box; 121. Rotating disc; 122. Injection pipe; 123. Accelerating nozzle; 124. Corrugated connecting hose; 125. Bend; 126. Gas delivery chamber pipe; 127. Rotating umbrella disc; 1 28. Powder conveying pipe; 131. Pull rod; 132. Return spring; 133. Corrugated ring; 134. Drive motor; 135. Spur gear; 136. Gear ring; 141. Threaded baffle; 142. Conical bucket; 143. Mesh plate; 144. Guide groove; 151. Mounting frame; 152. Cam rod; 153. Transmission assembly; 154. Arch-breaking cone; 155. Tension spring; 16. Floating seat; 17. Support plate; 18. Floating spring. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] Example 1: A high-efficiency dry desulfurization device for waste incineration power generation furnaces, such as... Figures 1-8 As shown, it includes a base 1, on which a mounting frame 2, a smoke pipe 9, and a control box 11 are mounted. The mounting frame 2 is equipped with a conveying motor 5, a quicklime storage bin 3, and a spiral feed pipe 4. The quicklime storage bin 3 and the spiral feed pipe 4 are connected. A spiral conveying blade 6 is rotatably connected inside the spiral feed pipe 4. The output shaft of the conveying motor 5 is connected to the spiral conveying blade 6. A diversion and pressure stabilizing box 10 is mounted on the smoke pipe 9. Both the diversion and pressure stabilizing box 10 and the spiral feed pipe 4 are equipped with flexible corrugated connecting pipes 7. An anti-stick and wear-resistant conveying pipe 8 is connected between the two flexible corrugated connecting pipes 7. Both the anti-stick and wear-resistant conveying pipe 8 and the diversion and pressure stabilizing box 10 are equipped with air inlets. The smoke pipe 9 is equipped with a spraying component, an auxiliary component, and a powder equalization component.

[0031] The injection assembly includes a rotating disk 121, which is located inside the flue pipe 9. Six injection pipes 122 are evenly arranged on the rotating disk 121, and each of the six injection pipes 122 is equipped with an accelerating nozzle 123. The flue pipe 9 is equipped with a gas delivery chamber pipe 126, and the six accelerating nozzles 123 are all connected to the inside of the gas delivery chamber pipe 126. The diversion and pressure stabilizing box 10 is equipped with six powder delivery pipes 128, and corrugated connecting hoses 124 are provided on the powder delivery pipes 128 and the accelerating nozzles 123. A bend pipe 125 is connected between the corrugated connecting hoses 124. A rotating umbrella disk 127 is rotatably connected to the injection pipe 122.

[0032] The auxiliary components include a pull rod 131, which is provided on each bend 125. The pull rod 131 and the rotating disk 121 are slidably connected. A return spring 132 is connected between the pull rod 131 and the rotating disk 121. A drive motor 134 is provided on the smoke pipe 9. A spur gear 135 is provided on the output shaft of the drive motor 134. A gear ring 136 is rotatably connected to the rotating disk 121. A corrugated ring 133 is provided on the gear ring 136. The spur gear 135 and the gear ring 136 mesh.

[0033] All six pull rods 131 are in contact with the trough of the bellows ring 133.

[0034] The powder distribution component includes a threaded baffle 141. The flow distribution and pressure stabilizing box 10 is provided with the threaded baffle 141 and the mesh plate 143. The mesh plate 143 is provided with two conical hoppers 142. The flow distribution and pressure stabilizing box 10 is provided with six guide grooves 144.

[0035] The conical hoppers 142 on both perforated plates 143 have their small openings facing the perforated plate 143.

[0036] All six guide grooves 144 have their large openings facing the perforated plate 143 and their small openings facing the powder conveying pipe 128.

[0037] During operation, the hydrated lime storage silo 3 contains hydrated lime powder. The operator first introduces high-pressure air into the anti-sticking and wear-resistant conveying pipe 8, the diversion and pressure stabilizing box 10, and the air delivery chamber pipe 126. Subsequently, the output shaft of the conveying motor 5 drives the spiral conveyor blade 6 to rotate. The hydrated lime powder in the hydrated lime storage silo 3 will fall into the spiral feed pipe 4 under the action of gravity. After falling into the spiral feed pipe 4, the hydrated lime powder will be pushed into the anti-sticking and wear-resistant conveying pipe 8 by the spiral conveyor blade 6. After falling into the anti-sticking and wear-resistant conveying pipe 8, the compressed air blown into the anti-sticking and wear-resistant conveying pipe 8 will blow the hydrated lime powder into the diversion and pressure stabilizing box 10, forming a gas-solid two-phase flow. High-pressure gas is blown into the top air inlet of the diversion and pressure stabilizing box 10. The high-pressure gas blows into the threaded baffle 141 inside the diversion and pressure stabilizing box 10. Under the guidance of the airflow, a rotating airflow is formed, and the gas-solid two-phase flow in the anti-stick and wear-resistant conveying pipe 8 enters the diversion and pressure stabilizing box 10 tangentially, thus forming a rotating dispersed flow. After the rotating gas-solid two-phase flow leaves the threaded baffle 141, it is blown into the upper conical hopper 142. It passes evenly through the mesh plate 143 through the conical hopper 142, and then is evenly blown into the guide groove 144 through the lower conical hopper 142. The gas-solid two-phase flow entering the guide groove 144 is guided into the powder conveying pipe 128, and the high-pressure gas introduced into the gas conveying chamber pipe 126 is evenly blown into the accelerating nozzle 123. The side wall of the accelerating nozzle 123 is connected to the powder conveying pipe 128 through the bend pipe 125, the corrugated connecting hose 124, and the powder conveying pipe 128, so that negative pressure is generated in the accelerating nozzle 123. The pressure exerts a suction force on the powder conveying pipe 128, which in turn allows the gas-solid two-phase flow blown into the powder conveying pipe 128 to flow more effectively into the accelerating nozzle 123. The gas-solid two-phase flow entering the accelerating nozzle 123 then flows into the injection pipe 122, and is sprayed onto the rotating umbrella disc 127 through the injection port of the injection pipe 122. The high-pressure gas-solid two-phase flow impacts and disperses upon impact with the rotating umbrella disc 127, causing the rotating umbrella disc 127 to rotate under the impact force. This allows the quicklime powder to be sprayed more evenly and react more fully with the harmful substances in the flue pipe 9. Then, the operator introduces waste incineration exhaust gas into the flue pipe 9. The quicklime powder sprayed into the flue pipe 9 reacts with the harmful substances in the exhaust gas. This method allows the quicklime powder to be sprayed more evenly and react more fully with the harmful substances in the exhaust gas, thereby... To improve the quality and efficiency of exhaust gas denitrification, during the denitrification process, the output shaft of the drive motor 134 rotates in both directions. This rotation drives the spur gear 135, which in turn drives the gear ring 136, which in turn drives the bellows ring 133. During this rotation, the bellows ring 133 presses against the pull rod 131, causing it to move away from the acceleration nozzle 123. The return spring 132 is stretched. This movement of the pull rod 131 also moves the bend in the tube 125, which in turn pulls the corrugated connecting hose 124, stretching it. After the peaks of the bellows ring 133 separate from the pull rod 131, the return spring 132 resets the pull rod 131.The resetting of lever 131 causes the bend 125 and corrugated connecting hose 124 to reset. This reciprocating motion causes the bend 125 to vibrate slightly, preventing the accumulation of quicklime powder at the bend corner, thus reducing maintenance costs and improving work efficiency.

[0038] Example 2: Based on Example 1, such as Figures 2-10 As shown, it also includes a powder arch-breaking component. The powder arch-breaking component is installed in the quicklime storage silo 3. The powder arch-breaking component includes an installation frame 151. The installation frame 151 is installed in the quicklime storage silo 3. A cam rod 152 is rotatably connected in the installation frame 151. The cam rod 152 extends out of the quicklime storage silo 3 and is rotatably connected to the spiral feed pipe 4. A transmission component 153 is connected between the spiral conveying blade 6 and the cam rod 152. An arch-breaking cone 154 is slidably connected on the installation frame 151. A tension spring 155 is connected between the installation frame 151 and the arch-breaking cone 154.

[0039] It also includes a floating seat 16. The mounting frame 2 is provided with two floating seats 16. Each of the two floating seats 16 is fitted with a support plate 17. Both support plates 17 are connected to the anti-stick and wear-resistant conveying pipe 8. Four floating springs 18 are connected between the support plate 17 and the floating seat 16.

[0040] During the rotation of the spiral conveyor blade 6, the spiral conveyor blade 6 drives the cam rod 152 to rotate via the transmission assembly 153. During the rotation of the cam rod 152, it intermittently impacts the arch-breaking cone 154. When impacted, the arch-breaking cone 154 extends out of the mounting frame 151, stretching the tension spring 155. After the cam rod 152 continues to rotate and disengages from the arch-breaking cone 154, the tension spring 155 resets, causing the arch-breaking cone 154 to reset. This process repeats, causing the arch-breaking cone 154 to move back and forth. During this movement, the arch-breaking cone 154 pushes against the hydrated lime powder near the connection between the hydrated lime storage bin 3 and the spiral feed pipe 4, thereby preventing... The slaked lime powder clumps at the connection point, which facilitates its smoother flow into the spiral feed pipe 4, improving work efficiency. After the slaked lime powder enters the anti-sticking and wear-resistant conveying pipe 8, high-pressure air is tangentially blown into the anti-sticking and wear-resistant conveying pipe 8, making it prone to vibration. A floating spring 18 is connected between the support plate 17 and the floating seat 16 at the bottom of the anti-sticking and wear-resistant conveying pipe 8. During the vibration of the anti-sticking and wear-resistant conveying pipe 8, the floating spring 18 can effectively alleviate the vibration, thereby improving the stability of the anti-sticking and wear-resistant conveying pipe 8, reducing the relative displacement of the connection port, and thus improving the sealing performance.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A high-efficiency dry acid removal device for waste incineration power generation furnaces, characterized in that: It includes a base (1), a mounting frame (2), a smoke pipe (9) and a control box (11) on the base (1). The mounting frame (2) is equipped with a conveying motor (5), a quicklime storage bin (3) and a spiral feed pipe (4). The quicklime storage bin (3) and the spiral feed pipe (4) are connected. The spiral feed pipe (4) is rotatably connected with a spiral conveying blade (6). The output shaft of the conveying motor (5) is connected to the spiral conveying blade (6). The smoke pipe (9) is equipped with a diversion and pressure stabilizing box (10). Both the diversion and pressure stabilizing box (10) and the spiral feed pipe (4) are equipped with flexible corrugated connecting pipes (7). The two flexible corrugated connecting pipes (7) are connected to an anti-stick and wear-resistant conveying pipe (8). Both the anti-stick and wear-resistant conveying pipe (8) and the diversion and pressure stabilizing box (10) are equipped with air inlets. The smoke pipe (9) is equipped with a spraying component, an auxiliary component and a powder distribution component.

2. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 1, characterized in that: The injection assembly includes a rotating disk (121), a rotating disk (121) is provided inside the flue (9), six injection pipes (122) are evenly provided on the rotating disk (121), each of the six injection pipes (122) is provided with an acceleration nozzle (123), a gas delivery chamber pipe (126) is provided on the flue (9), and the six acceleration nozzles (123) are all connected to the inside of the gas delivery chamber pipe (126). The shunt pressure stabilizing box (10) is provided with six powder delivery pipes (128), and corrugated connecting hoses (124) are provided on the powder delivery pipes (128) and the acceleration nozzles (123). A bend pipe (125) is connected between the corrugated connecting hoses (124), and a rotating umbrella disk (127) is rotatably connected to the injection pipe (122).

3. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 2, characterized in that: The auxiliary components include a pull rod (131), each bend (125) is provided with a pull rod (131), the pull rod (131) and the rotating disk (121) are slidably connected, a return spring (132) is connected between the pull rod (131) and the rotating disk (121), a drive motor (134) is provided on the smoke pipe (9), a spur gear (135) is provided on the output shaft of the drive motor (134), a gear ring (136) is rotatably connected on the rotating disk (121), a corrugated ring (133) is provided on the gear ring (136), and the spur gear (135) and the gear ring (136) mesh.

4. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 3, characterized in that: All six tie rods (131) are in contact with the trough of the bellows ring (133).

5. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 4, characterized in that: The powder distribution component includes a threaded baffle (141), and the distribution and pressure stabilizing box (10) is provided with a threaded baffle (141) and a mesh plate (143). The mesh plate (143) is provided with two conical hoppers (142), and the distribution and pressure stabilizing box (10) is provided with six guide grooves (144).

6. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 5, characterized in that: The conical hoppers (142) on both mesh plates (143) have their small openings facing the mesh plate (143).

7. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 5, characterized in that: All six guide grooves (144) have their large openings facing the perforated plate (143) and their small openings facing the powder conveying pipe (128).

8. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 5, characterized in that: It also includes a powder arch breaking component. The powder arch breaking component is provided in the hydrated lime storage silo (3). The powder arch breaking component includes an installation frame (151). The installation frame (151) is provided in the hydrated lime storage silo (3). A cam rod (152) is rotatably connected in the installation frame (151). The cam rod (152) extends out of the hydrated lime storage silo (3) and is rotatably connected to the spiral feed pipe (4). A transmission component (153) is connected between the spiral conveyor blade (6) and the cam rod (152). An arch breaking cone (154) is slidably connected on the installation frame (151). A tension spring (155) is connected between the installation frame (151) and the arch breaking cone (154).

9. The high-efficiency dry desulfurization device for waste incineration power generation as described in claim 8, characterized in that: It also includes a floating seat (16), and the mounting bracket (2) is provided with two floating seats (16). Each of the two floating seats (16) is fitted with a support plate (17). Both support plates (17) are connected to the anti-stick and wear-resistant conveying pipe (8). Four floating springs (18) are connected between the support plate (17) and the floating seat (16).

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