A desulfurization and denitrification agent conveying device and process for flue gas treatment

Abstract

The present invention relates to the technical field of conveying devices, and specifically relates to a desulfurization and denitration agent conveying device and process for flue gas treatment, including a main body of the desulfurization and denitration agent conveying device. An inlet bin is arranged above the front side of the main body of the desulfurization and denitration agent conveying device, and a suction pipe is movably installed above the inlet bin. The beneficial effects are as follows: By designing the cooperation of an automatic suction component, an automatic discharging component and a powder recovery component, automatic adsorption and feeding of the desulfurization and denitration agent can be realized. The powder filtering inner cover inside the suction bin can separate the powder agent and the granule agent. The granules are discharged into the compression fan through the storage bin, the spiral discharging pipe and the discharging throat pipe and mixed with the gas for output. The powder is intercepted and filtered by the filtering box and conveyed separately from the granules, which can effectively avoid the powder from easily generating dust or caking and avoid blockage. Moreover, a quantitative feedback bearing valve plate is designed inside the discharging throat pipe to form a feedback mechanism capable of timely detecting the deviation in flow control during the conveying process.

Description

Technical Field

[0001] The present invention belongs to the technical field of desulfurization and denitrification agent transportation, and in particular relates to a desulfurization and denitrification agent transportation device and process for flue gas treatment. Background Art

[0002] Nowadays, the requirements for atmospheric environmental protection are constantly increasing, which has led to higher requirements for the emission of nitrogen oxides and sulfur oxides from boilers. It is required that the nitrogen and sulfide content in the flue gas of factory boilers must be controlled within a certain range. The addition of desulfurization and denitrification agents is one of the effective ways to reduce nitrogen oxides and sulfur oxides. Currently, the commonly used desulfurization and denitrification agents are powdered or granular. How to add the best proportion of desulfurization and denitrification agents to the boiler is the key to ensuring that the flue gas emissions meet the standards. In addition, during the transportation of desulfurization and denitrification agents in the conveying pipeline, the material is prone to "bridging" when entering the exhaust chamber, resulting in the material not being able to be discharged normally. Discharge. In the existing technology, when powder particles are added and transported, pipelines and airflow are generally used for transportation, which is very prone to blockage. Taking denitrification in the boiler combustion process as an example, carbon-based denitrification agents are often transported from a vacuum loader to a buffer silo. When transportation is required, the carbon-based denitrification agent passes through the feeding metering unit and enters the conveying pipeline. The positive pressure air source of the compressed air unit is used to transport the material to the system into the furnace. However, the existing denitrification agent conveying system has the following disadvantages: the airflow of the positive pressure air source is easy to recoil into the buffer silo, affecting the efficiency of transporting materials to the furnace; since the denitrification agent is granular, blockage is easy to occur in the buffer silo.

[0003] The existing Chinese patent document with publication number CN118929213A proposes a solid particle conveying device, which is provided with a vertical pipe, a horizontal pipe, and two centrally symmetrically arranged curved pipes; a support plate, the top surface of the support plate is fixedly connected to a mounting ring, the inner wall of the mounting ring is slidably and rotatably connected to two mounting blocks, the two mounting blocks are provided with symmetrically arranged grooves, and the support plate is provided with a rotating part for driving the two mounting blocks and the two internal curved pipes to rotate synchronously; a cleaning pipe is connected to the sliding block, and a guide pipe is fixed and connected to one side of the mounting ring, and the cleaning pipe is slidably inserted into the inside of the guide pipe, and a spiral blade is fixedly connected to the inner wall of one end of the cleaning pipe, and one end of the spiral blade extends into the inside of the guide pipe, so that the blocked curved pipe can be quickly replaced, so that the device can convey smoothly, and the spare curved pipe can be replaced without stopping the machine to clear the material blockage to solve the above problem, but there is a risk of leakage of gas and transported materials when replacing the pipeline.

[0004] Therefore, the present invention provides a desulfurization and denitrification agent conveying device and process for flue gas treatment, which solves the problem in the prior art that when replacing the standby elbow pipe without shutting down the machine to dredge the material blockage, there is a risk of leakage of gas and transported materials. By adopting a dual-feed design to separate powders and granules, designing two groups of Venturi tubes to merge with the conveying pipes, and introducing a metering feedback component to feedback the discharged granules, and using the separated powders for recycling and replenishing materials, not only reduces the risk of material blockage, but also avoids leakage and improves the conveying efficiency of the desulfurization and denitrification agent for flue gas treatment. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a desulfurization and denitrification agent conveying device and process for flue gas treatment to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A desulfurization and denitrification agent conveying device for flue gas treatment, including the main body of the desulfurization and denitrification agent conveying device. Above the front side of the main body of the desulfurization and denitrification agent conveying device, there is a feed bin. Above the feed bin, there is a suction pipe movably installed. Below the front side of the main body of the desulfurization and denitrification agent conveying device, there is a replenishment bin. Inside the main body of the desulfurization and denitrification agent conveying device, there is a control device. On one side inside the main body of the desulfurization and denitrification agent conveying device, there is an upper feeding conveying pipe. On the other side inside the main body of the desulfurization and denitrification agent conveying device, there is an automatic suction component. Below the automatic suction component, there is an automatic discharging component. Below the automatic discharging component, there is a mixed feeding component. On one side of the automatic suction component, there is a powder recovery component. The automatic suction component includes a suction bin. Inside the suction bin, there is a powder filtering inner cover rotatably installed. The automatic discharging component includes a storage bin, a spiral discharging pipe, and a discharging throat pipe. The powder recovery component includes a filtering box and an air pump. The mixed feeding component includes a Venturi tube II, a compression fan, and a mixed feeding conveying pipe. The output pipe end of the compression fan is fixedly connected to one end of the Venturi tube II. One end of the mixed feeding conveying pipe is fixedly connected to the lower end of the upper feeding conveying pipe through a flange.

[0007] Preferably, the lower surface of the suction bin is fixedly connected to the upper surface of the storage bin. The lower end of the powder filtering inner cover penetrates through the top of the storage bin. The upper and lower ends of the inner surface of the suction bin are respectively fixedly installed with upper and lower sealing mounting frames adapted to the suction bin. The top of the suction bin is fixedly installed with a suction connection pipe. One end of the suction connection pipe is fixedly connected to one end of the suction pipe through a flange.

[0008] Preferably, a diverter blade is fixedly installed on the upper part of the interior of the powder filter inner cover, and particle rolling slide plates are staggered on the inner surface of the powder filter inner cover. The discharge port of the storage bin is fixedly connected to the inner wall of the spiral discharge pipe, the inner side wall of the discharge throat is fixedly connected to the outer side wall of the discharge port of the spiral discharge pipe, and the lower end of the discharge throat is fixedly connected to the inner wall of the narrow groove of Venturi tube 2.

[0009] Preferably, a fixed base is fixedly installed below the inner surface of the discharge throat, and a quantitative feedback bearing valve plate is movably installed above the fixed base. The outer surface of the quantitative feedback bearing valve plate is in contact with the inner surface of the discharge throat, and a valve plate is symmetrically and movably installed below the inner side wall of the quantitative feedback bearing valve plate. A closing plug is fixedly installed on one side of the upper surface of the valve plate through a gasket, and the upper surface of the quantitative feedback bearing valve plate is provided with a through groove adapted to the closing plug.

[0010] Preferably, a weight sensor is provided in the middle of the upper surface of the fixed base, and the bottom of the quantitative feedback bearing valve plate is fixed on an extrusion contact column adapted to the position of the weight sensor. Telescopic rods are symmetrically fixedly installed on both sides of the upper surface of the fixed base, and a movable frame is fixedly installed on the upper end of the telescopic rod. A movable pull rod is symmetrically rotatably installed on the upper surface of the movable frame, and a T-shaped slider is movably installed on the upper end of the movable pull rod. A limiting slide groove adapted to the T-shaped slider is provided on the lower surface of the valve plate.

[0011] Preferably, a suction pipe is fixedly installed on the top of the filter box, one end of the suction pipe is fixedly connected to the side wall of the suction bin, a feeding pipe is fixedly installed on the lower end of the filter box, an intelligent control valve is provided in the middle of the feeding pipe, the air pump is arranged on one side of the filter box, the suction pipe end of the air pump is fixedly connected to the side wall of the filter box, and the exhaust pipe end of the air pump is fixedly installed with a gas exhaust main pipe.

[0012] Preferably, a venturi tube 1 is provided below the feeding pipe, the lower end of the filter box is fixedly connected to the inner wall of the narrow groove of the venturi tube 1, the lower end of the gas exhaust main pipe is fixedly connected to one end of the venturi tube 1 through a branch pipe, one end of the venturi tube 1 is fixedly connected to the lower side wall of the spiral discharge pipe through a bend pipe, an auxiliary exhaust pipe is fixedly installed on the lower side wall of the gas exhaust main pipe, and one end of the auxiliary exhaust pipe is fixedly connected to the side wall of the bend of the mixed feeding conveying pipe.

[0013] Preferably, a filter screen cover is fixedly installed inside the filter box, and a support ring is welded to the inner wall of the filter screen cover through a bracket. A spring sleeve is fixedly installed on one side of the support ring, and a trigger disk is movably installed above the spring sleeve. An upper bracket is fixedly installed on one side of the spring sleeve, and a rubber pad is fixedly installed on the upper surface of the upper bracket, and the upper end of the rubber pad is in contact with the lower surface of the trigger disk.

[0014] Preferably, a toggle rod is fixedly installed on the outer side of the upper bracket, a movable plate is rotatably installed on the outer side of the support ring, a middle side surface of the movable plate is provided with a toggle tooth groove adapted to the toggle rod, impact balls are fixedly installed at both ends of the movable plate, a limiting rod is provided on the lower side of the touch plate, and one end of the limiting rod is fixedly connected to the side wall of the filter cover.

[0015] The present invention also proposes a process for conveying a desulfurization and denitrification agent for flue gas treatment, comprising the following steps: Step 1, feeding the desulfurization and denitrification agent to be conveyed to the bottom of the feed bin through the feeding bin, pulling down the suction pipe so that it passes through the through slot below the feed bin and is inserted into the desulfurization and denitrification agent inside the feeding bin, starting the air pump to suck the gas through the air inlet pipe, the air pump, the suction pipe and the suction bin, and at this time, the negative pressure inside the suction bin is used to automatically feed the desulfurization and denitrification agent into the suction bin through the suction connecting pipe and the suction pipe;

[0016] In step 2, the desulfurization and denitrification agent falls and is dispersed and diverted by the diverter blades inside the powder filter inner cover. The particles fall to the particle rolling slide plate due to gravity and enter the storage bin through the lower end of the powder filter inner cover. They are discharged through the spiral discharge pipe and then enter the Venturi tube 2 through the discharge throat. They are mixed with the gas generated by the compressed air fan and transported to the interior of the flue gas treatment equipment through the mixed feeding conveying pipe and the feeding conveying pipe.

[0017] Step 3: Within a preset fixed time period, the movable frame is positioned at the upper limit position in cooperation with the fixed base to measure and feedback the mass actually discharged into the second venturi tube during the fixed time period. Then, the telescopic rod pulls the movable frame to the lower limit position to gradually discharge the granular desulfurization and denitrification agent through the discharge throat into the second venturi tube;

[0018] Step 4: The suction pipe separates the powder and granules and draws them into the filter box. When the actual discharge volume fed back from the discharge throat does not meet the standard, the intelligent control valve of the feeding pipe opens to allow the powder to be fed into the discharge throat through the feeding pipe and the venturi tube. Under normal circumstances, the control valve on the branch pipe connecting the gas discharge main pipe and the venturi tube is closed. At this time, the discharged gas will enter the bend of the mixed feeding conveying pipe through the auxiliary exhaust pipe. After the gas is fed in, the auxiliary desulfurization and denitrification agent is smoothly output through the feeding conveying pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By designing the cooperation of the automatic material suction component, the automatic material discharge component and the powder recovery component, the automatic adsorption and feeding of the desulfurization and denitrification agent can be realized. The powder filter inner cover inside the material suction bin can separate the powder agent and the granular agent. The granules are discharged into the compression fan through the storage bin, the spiral discharge pipe and the discharge throat pipe and mixed with the gas for output. The powder is intercepted and filtered by the filter box and transported separately from the granules, which can effectively avoid the easy generation of dust or caking of the powder and prevent blockage. And a quantitative feedback load-bearing valve plate is designed inside the discharge throat pipe to form a feedback mechanism that can timely detect the deviation in the flow control during the transportation process. When the actual discharge amount feedback inside the discharge throat pipe does not meet the standard, the intelligent control valve of the feeding pipe opens, so that the powder is supplemented into the discharge throat pipe through the feeding pipe and the Venturi tube No. 1 and corrects the deviation in the flow control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the opened structure of the feeding bin of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the main body of the desulfurization and denitrification agent conveying device of the present invention;

[0024] Figure 4 It is a schematic diagram of the front internal structure of the main body of the desulfurization and denitrification agent conveying device of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the material suction bin of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal top view structure of the material suction bin of the present invention;

[0027] Figure 7 It is a schematic diagram of the internal structure of the filter box of the present invention;

[0028] Figure 8 It is a schematic diagram of the internal top view structure of the filter box of the present invention;

[0029] Figure 9 It is a schematic diagram of the internal structure of the filter mesh cover of the present invention;

[0030] Figure 10 It is a schematic diagram of the internal top view structure of the discharge throat pipe in the closed state of the present invention;

[0031] Figure 11 It is a schematic diagram of the internal bottom view structure of the discharge throat pipe in the closed state of the present invention;

[0032] Figure 12This is a schematic diagram of the internal structure of the discharge throat of the present invention when it is in an open state;

[0033] Figure 13 This is a schematic diagram of the internal structure of the discharge throat of the present invention when it is in an open state;

[0034] Figure 14 Schematic diagram of the internal cross-sectional structure of the discharge throat of the present invention in a closed state;

[0035] Figure 15 Schematic diagram of the internal cross-sectional structure of the discharge throat of the present invention in an open state;

[0036] Figure 16 This is a schematic diagram of the valve plate structure of the present invention;

[0037] Figure 17 This is a schematic diagram of the desulfurization and denitrification agent delivery process of the present invention.

[0038] In the figure: 1. Desulfurization and denitrification agent conveying device body; 2. Feeding silo; 21. Suction pipe; 3. Replenishing silo; 4. Feeding conveying pipe; 5. Control device; 6. Automatic suction assembly; 61. Suction silo; 611. Suction connecting pipe; 62. Powder filter inner cover; 621. Diverter blade; 622. Particle rolling slide plate; 63. Lower sealing mounting frame; 64. Upper sealing mounting frame; 7. Automatic discharge assembly; 71. Storage silo; 72. Spiral discharge pipe; 73. Discharge throat; 731. Quantitative feedback bearing valve plate; 7311. Valve plate; 7312. Closing plug; 7313. Auxiliary shaking plate; 7314. Extrusion contact column; 732. Movable frame; 732 1. Movable pull rod; 733. Fixed base; 734. Telescopic rod; 735. Weight sensor; 8. Powder recovery assembly; 81. Filter box; 811. Feed pipe; 812. Suction pipe; 82. Air pump; 821. Inlet pipe; 822. Gas exhaust main pipe; 8221. Auxiliary exhaust pipe; 8222. Venturi tube 1; 83. Filter screen; 831. Support ring; 832. Spring sleeve; 833. Trigger plate; 834. Upper bracket; 835. Toggle lever; 836. Movable plate; 8361. Impact ball; 837. Limit rod; 9. Mixing and feeding assembly; 91. Venturi tube 2; 92. Compressor fan; 93. Mixing and feeding conveying pipe. DETAILED DESCRIPTION

[0039] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figures 1 to 17 The present invention provides a technical solution: a desulfurization and denitrification agent conveying device for flue gas treatment, comprising a desulfurization and denitrification agent conveying device body 1, a feed bin 2 is provided on the upper front side of the desulfurization and denitrification agent conveying device body 1, a suction pipe 21 is movably installed above the feed bin 2, a feeding bin 3 is provided on the lower front side of the desulfurization and denitrification agent conveying device body 1, a control device 5 is provided inside the desulfurization and denitrification agent conveying device body 1, a feeding conveying pipe 4 is provided on one side of the interior of the desulfurization and denitrification agent conveying device body 1, and the interior of the desulfurization and denitrification agent conveying device body 1 is provided with a plurality of feeding bins 3 and a plurality of feeding bins 3. An automatic suction component 6 is provided on the other side, an automatic discharge component 7 is provided below the automatic suction component 6, a mixed feeding component 9 is provided below the automatic discharge component 7, a powder recovery component 8 is provided on one side of the automatic suction component 6, the automatic suction component 6 includes a suction bin 61, a powder filter inner cover 62 is rotatably installed inside the suction bin 61, the automatic discharge component 7 includes a storage bin 71, a spiral discharge pipe 72 and a discharge throat 73, the powder recovery component 8 includes a filter box 81 and an air pump 82, and the mixed feeding component 9 includes a venturi tube 9 1. Compressed air blower 92 and mixed feeding conveying pipe 93. The output pipe end of compressed air blower 92 is fixedly connected to one end of venturi tube 2 91. One end of mixed feeding conveying pipe 93 is fixedly connected to the lower end of feeding conveying pipe 4 through flange. The lower surface of suction bin 61 is fixedly connected to the upper surface of storage bin 71. The lower end of powder filter inner cover 62 passes through the top of storage bin 71. The upper and lower ends of the inner surface of suction bin 61 are respectively fixedly installed with upper sealing mounting frame 64 and lower sealing mounting frame 63 adapted to suction bin 61. The top of suction bin 61 A suction connection pipe 611 is fixedly installed, one end of the suction connection pipe 611 is fixedly connected to one end of the suction pipe 21 through a flange, a splitter blade 621 is fixedly installed on the upper part of the powder filter inner cover 62, and particle rolling slide plates 622 are staggeredly distributed on the inner surface of the powder filter inner cover 62, the discharge port of the storage bin 71 is fixedly connected to the inner wall of the spiral discharge pipe 72, the inner side wall of the discharge throat 73 is fixedly connected to the outer side wall of the discharge port of the spiral discharge pipe 72, and the lower end of the discharge throat 73 is fixedly connected to the inner wall of the narrow groove of the Venturi tube 2 91;

[0041] In this embodiment, the feeding conveying pipe 4 needs to be connected to the feed inlet of the flue gas treatment tower through a pipeline. The control device 5 controls the entire device as a control device. The components controlled by the control device 5 include the spiral discharge pipe 72, the compression blower 92, the air pump 82, and the control valve components installed on each pipeline. A control panel connected to the control device 5 is installed on the side wall of the main body 1 of the desulfurization and denitrification agent conveying device. The suction pipe 21 can be designed as a telescopic corrugated pipe-like structure. The replenishment bin 3 is used to transport the desulfurization and denitrification agent for flue gas treatment to the lower part of the feed bin 2. The lower suction pipe 21 is pulled down to pass through the through slot under the feed bin 2 and inserted into the desulfurization and denitrification agent inside the replenishment bin 3. By starting the air pump 82, the gas is sucked through the intake pipe 821, the air pump 82, the suction pipe 812, and the suction bin 61. At this time, the inside of the suction bin 61 uses negative pressure to automatically feed the desulfurization and denitrification agent into the suction bin 61 through the suction connection pipe 611 and the suction pipe 21. In addition to sealing the upper and lower parts of the powder filter inner cover 62 and the suction bin 61 to form a spacer layer, a gear motor drive assembly can also be installed above the lower sealing mounting frame 63 to drive the powder filter inner cover 62 to rotate by meshing with the gear ring on the outside of the powder filter inner cover 62. In addition, an electric heating pipe can also be installed above the lower sealing mounting frame 63 to dry the suction-fed desulfurization and denitrification agent. The powder filter inner cover 62 can filter the desulfurization and denitrification agent particles. When the desulfurization and denitrification agent falls through the suction connection pipe 611, it is dispersed and shunted by the diversion blades 621 inside the powder filter inner cover 62. The particles fall onto the particle rolling and sliding step plate 622 due to gravity and roll in sequence as the powder filter inner cover 62 rotates. This not only separates the particles from the powder and separates the powder, but also increases the drying time and fully dries the particles. The particles will enter the storage bin 71 through the lower end of the powder filter inner cover 62, be discharged through the spiral discharge pipe 72, and then enter the Venturi tube II 91 through the discharge throat pipe 73, and be mixed with the gas generated by the compression blower 92 and transported and fed through the mixing feeding conveying pipe 93 and the feeding conveying pipe 4. The separated powder enters the inside of the filter box 81 through the suction pipe 812, and the powder and particles are separated and transported, which can effectively avoid the easy generation of dust or caking of the powder, and also reduce the possible blockage of the particles due to uneven sizes, reducing the production line shutdown and cleaning time. In addition, the accuracy of the flow feedback mechanism inside the discharge throat pipe 73 in the later stage is improved. The compression blower 92 and the Venturi tube II 91 cooperate to suck and transport materials through the Venturi effect, effectively avoiding the problem of material backflow, not only improving the conveying efficiency but also reducing the risk of leakage.

[0042] Embodiment 2 Please refer to Figures 1 to 17On the basis of the first embodiment, the present embodiment further proposes that a fixed base 733 is fixedly installed below the inner surface of the discharge throat pipe 73, and a quantitative feedback bearing valve plate 731 is movably installed above the fixed base 733. The outer surface of the quantitative feedback bearing valve plate 731 contacts the inner surface of the discharge throat pipe 73, and a valve plate 7311 is symmetrically and movably installed below the inner side wall of the quantitative feedback bearing valve plate 731. A sealing plug 7312 is fixedly installed on one side of the upper surface of the valve plate 7311 through a gasket. The upper surface of the quantitative feedback bearing valve plate 731 is provided with a sealing plug 7312 that matches the sealing plug 7312. A weight sensor 735 is provided in the middle of the upper surface of the fixed base 733. The bottom of the quantitative feedback bearing valve plate 731 is fixed to an extrusion contact column 7314 adapted to the position of the weight sensor 735. Telescopic rods 734 are symmetrically fixedly installed on both sides of the upper surface of the fixed base 733. A movable frame 732 is fixedly installed on the upper end of the telescopic rod 734. A movable pull rod 7321 is symmetrically rotatably installed on the upper surface of the movable frame 732. A T-shaped slider is movably installed on the upper end of the movable pull rod 7321. A limiting slide groove adapted to the T-shaped slider is provided on the lower surface of the valve plate 7311.

[0043] In this embodiment, within a preset fixed time period, the movable frame 732 is in the upper limit position with the cooperation of the fixed base 733, and the movable pull rod 7321 drives the T-shaped slider to make the valve plate 7311 and the quantitative feedback bearing valve plate 731 in a horizontal position. At this time, the closing plug 7312 blocks the quantitative feedback bearing valve plate 731. At this time, the granular desulfurization and denitrification agent discharged from the spiral discharge pipe 72 accumulates above the quantitative feedback bearing valve plate 731, squeezing the contact column 7314 to press the weight sensor 735. At this time, the weight change of the weight sensor 735 is the mass actually discharged into the Venturi tube 291 within the fixed time period, forming a feedback mechanism. Setting the feedback mechanism can timely detect and correct deviations in flow control, reduce the problem of flue gas treatment pollution caused by uneven material supply, and can To determine whether the flow control of the device is correct, when the telescopic rod 734 pulls the movable frame 732 to the lower limit position, the movable pull rod 7321 drives the T-shaped slider to move in the bottom slide of the valve plate 7311. At this time, the valve plate 7311 flips over, so that the closing plug 7312 cancels the blockage of the quantitative feedback bearing valve plate 731. At this time, the accumulated granular desulfurization and denitrification agent can be discharged normally. In addition, as the valve plate 7311 flips over, the closing plug 7312 slides along the auxiliary shaking plate 7313 and is moved by the ridge plate on the auxiliary shaking plate 7313. Under the action of the gasket of the valve plate 7311, it will vibrate, so that the granular desulfurization and denitrification agent on the valve plate 7311 is gradually shaken off, which not only avoids blockage, but also allows the accumulated granular desulfurization and denitrification agent to be gradually discharged, thereby improving the uniformity of feeding.

[0044] Please refer to Example 3 Figures 1 to 17, on the basis of the second embodiment, this embodiment further proposes that a suction pipe 812 is fixedly installed at the top of the filter box 81. One end of the suction pipe 812 is fixedly connected to the side wall of the material suction bin 61. A feeding pipe 811 is fixedly installed at the lower end of the filter box 81. An intelligent control valve is arranged in the middle of the feeding pipe 811. The air pump 82 is arranged on one side of the filter box 81. The suction pipe end of the air pump 82 is fixedly connected to the side wall of the filter box 81. The exhaust pipe end of the air pump 82 is fixedly installed with a main gas discharge pipe 822. A Venturi tube 8222 is arranged below the feeding pipe 811. The lower end of the filter box 81 is fixedly connected to the inner wall of the narrow slot of the Venturi tube 8222. The lower end of the main gas discharge pipe 822 is fixedly connected to one end of the Venturi tube 8222 through a branch pipe. One end of the Venturi tube 8222 is fixedly connected to the lower side wall of the spiral discharge pipe 72 through a bent pipe. An auxiliary exhaust pipe 8221 is fixedly installed on the lower side wall of the main gas discharge pipe 822. One end of the auxiliary exhaust pipe 8221 is fixedly connected to the side wall of the bent part of the mixed feeding and conveying pipe 93;

[0045] In this embodiment, the suction pipe 812 separates the powder agent and the granular agent and extracts them into the interior of the filter box 81. The air pump 82 achieves the purpose of sucking gas through the intake pipe 821. When the actual discharge amount feedback inside the discharge throat pipe 73 does not meet the standard, the intelligent control valve of the feeding pipe 811 is opened, so that the powder is replenished into the discharge throat pipe 73 through the feeding pipe 811 and the first Venturi tube 8222. This not only improves the accuracy of flow supply, but also can further utilize the recycled powder, playing the role of energy conservation and environmental protection. The gas sucked by the air pump 82 is discharged through the main gas discharge pipe 822. Under normal circumstances, the control valve on the branch pipe connecting the main gas discharge pipe 822 and the first Venturi tube 8222 is closed. At this time, the discharged gas will enter the bent part of the mixed feeding and conveying pipe 93 through the auxiliary exhaust pipe 8221. Particularly, the bent pipe of the mixed feeding and conveying pipe 93 is 45°. After the gas is replenished, the auxiliary desulfurization and denitrification agent smoothly passes through the feeding and conveying pipe 4 and is output, improving the fluidity of the material, reducing the resistance of the material in the pipeline, and enhancing the conveying efficiency. When the feedback mechanism feeds the powder into the discharge throat pipe 73 through the feeding pipe 811 and the first Venturi tube 8222, the control valve of the auxiliary exhaust pipe 8221 is opened. At this time, the gas passes through the first Venturi tube 8222 to smoothly input the replenished powder into the discharge throat pipe 73 for supplementation. The multi-channel design provides a flexible operation flow replenishment method, which can be adjusted according to actual needs. Through precise feeding control and stable material conveying, the quality of each batch of products is ensured to be consistent, meeting the strict production process requirements. The real-time feedback mechanism can timely detect and correct the deviation in flow control, reducing the product quality problems caused by uneven material supply.

[0046] Embodiment 4 Please refer to Figures 1 to 17, on the basis of the third embodiment, this embodiment further proposes that a filter mesh cover 83 is fixedly installed inside the filter box 81. A support ring 831 is welded to the inner side wall of the filter mesh cover 83 through a bracket. A spring sleeve 832 is fixedly installed on one side of the support ring 831. A touch plate 833 is movably installed above the spring sleeve 832. An upper bracket 834 is fixedly installed on one side of the spring sleeve 832. A rubber pad is fixedly installed on the upper surface of the upper bracket 834. The upper end of the rubber pad is in contact with the lower surface of the touch plate 833. A toggle rod 835 is fixedly installed on the outer side of the upper bracket 834. A movable piece 836 is rotatably installed on the outer side of the support ring 831. A toggle tooth groove adapted to the toggle rod 835 is provided on the middle side surface of the movable piece 836. Impact balls 8361 are fixedly installed at both ends of the movable piece 836. A limiting rod 837 is provided on one side below the touch plate 833. One end of the limiting rod 837 is fixedly connected to the side wall of the filter mesh cover 83;

[0047] In this embodiment, when the powder enters the filter box 81 and is filtered by the filter mesh cover 83 inside the filter box 81 and enters the feeding pipe 811, after the touch plate 833 accumulates for a period of time and its mass increases, at this time the spring sleeve 832 is pressed down, the upper bracket 834 will drive the toggle rod 835 to move downward, toggle the movable piece 836, and the lower impact ball 8361 will knock on the filter mesh cover 83 to clean off the dust adhering to the filter mesh cover 83. As the touch plate 833 moves downward and is limited by the limiting rod 837, the touch plate 833 tilts, and all the accumulated powder on the touch plate 833 is poured out. Then the mass of the touch plate 833 becomes lighter, and the spring sleeve 832 resets. At this time, the touch plate 833 also returns to horizontal with the cooperation of the rubber pad above the upper bracket 834. As the spring sleeve 832 and the upper bracket 834 reset, the movable piece 836 is toggled in the reverse direction, and the upper impact ball 8361 knocks and vibrates the filter mesh cover 83 again to ensure the filtering effect of the filter mesh cover 83.

[0048] Embodiment Five Please refer to Figures 1 to 17 , on the basis of the fourth embodiment, this embodiment further proposes a desulfurization and denitrification agent conveying process for flue gas treatment, including the following steps:

[0049] Step 1, supplement the required desulfurization and denitrification agent into the lower part of the feeding bin 2 through the feeding bin 3. Pull down the suction pipe 21 so that it passes through the through groove below the feeding bin 2 and inserts into the desulfurization and denitrification agent inside the feeding bin 3. Start the air pump 82 to suck the gas through the air inlet pipe 821, the air pump 82, the suction pipe 812, and the suction bin 61. At this time, the inside of the suction bin 61 uses negative pressure to automatically feed the desulfurization and denitrification agent into the suction bin 61 through the suction connection pipe 611 and the suction pipe 21;

[0050] Step 2: The desulfurization and denitrification agent falls and is dispersed and shunted by the shunt blades 621 inside the powder filter inner cover 62. The particles fall due to gravity onto the particle rolling and sliding step plate 622 and then enter the storage bin 71 through the lower end of the powder filter inner cover 62. They are discharged through the spiral discharge pipe 72 and then enter the Venturi tube II 91 through the discharge throat pipe 73, and are mixed with the gas generated by the compression fan 92 and transported through the mixing and feeding conveying pipe 93 and the feeding conveying pipe 4 into the flue gas treatment equipment;

[0051] Step 3: During a preset fixed time period, the movable frame 732 is in the upper limit position in cooperation with the fixed base 733 to measure and feedback the mass actually discharged into the Venturi tube II 91 during this fixed time period. Then, the telescopic rod 734 pulls the movable frame 732 to the lower limit position to gradually discharge the granular desulfurization and denitrification agent through the discharge throat pipe 73 into the Venturi tube II 91;

[0052] Step 4: The suction pipe 812 separates the powder agent from the granular agent and extracts it into the filter box 81. When the actual discharge amount feedback inside the discharge throat pipe 73 does not meet the standard, the intelligent control valve of the feeding pipe 811 opens, allowing the powder to be replenished into the discharge throat pipe 73 through the feeding pipe 811 and the Venturi tube I 8222. Under normal circumstances, the control valve on the connecting branch pipe between the gas discharge main pipe 822 and the Venturi tube I 8222 is closed. At this time, the discharged gas will enter the elbow of the mixing and feeding conveying pipe 93 through the auxiliary exhaust pipe 8221. After the gas is replenished, the auxiliary desulfurization and denitrification agent is smoothly output through the feeding conveying pipe 4.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveying device for desulfurization and denitrification agents for flue gas treatment, comprising a main body (1) of the desulfurization and denitrification agent conveying device. Above the front side of the main body (1) of the desulfurization and denitrification agent conveying device, there is a feed bin (2). Above the feed bin (2), a suction pipe (21) is movably installed. Below the front side of the main body (1) of the desulfurization and denitrification agent conveying device, there is a supplementary feed bin (3). Inside the main body (1) of the desulfurization and denitrification agent conveying device, there is a control device (5). On one side inside the main body (1) of the desulfurization and denitrification agent conveying device, there is a feeding conveying pipe (4), and it is characterized in that: On the other side inside the main body (1) of the desulfurization and denitrification agent conveying device, an automatic material suction component (6) is arranged. Below the automatic material suction component (6), an automatic material discharging component (7) is arranged. Below the automatic material discharging component (7), a mixing and feeding component (9) is arranged. On one side of the automatic material suction component (6), a powder recovery component (8) is arranged. The automatic material suction component (6) includes a material suction bin (61). Inside the material suction bin (61), a powder filtering inner cover (62) is rotatably installed. The automatic material discharging component (7) includes a storage bin (71), a spiral material discharging pipe (72), and a material discharging throat pipe (73). The powder recovery component (8) includes a filtering box (81) and an air pump (82). The mixing and feeding component (9) includes a Venturi tube II (91), a compression blower (92), and a mixing and feeding conveying pipe (93). The output pipe end of the compression blower (92) is fixedly connected to one end of the Venturi tube II (91). One end of the mixing and feeding conveying pipe (93) is fixedly connected to the lower end of the feeding conveying pipe (4) through a flange. The lower end of the material discharging throat pipe (73) is fixedly connected to the inner wall of the narrow slot of the Venturi tube II (91). Below the inner surface of the material discharging throat pipe (73), a fixed base (733) is fixedly installed. Above the fixed base (733), a quantitative feedback bearing valve plate (731) is movably installed. The outer surface of the quantitative feedback bearing valve plate (731) is in contact with the inner surface of the material discharging throat pipe (73). Below the inner side wall of the quantitative feedback bearing valve plate (731), valve plate pieces (7311) are symmetrically and movably installed. On one side of the upper surface of the valve plate piece (7311), a sealing plug (7312) is fixedly installed through a gasket. On the upper surface of the quantitative feedback bearing valve plate (731), a through groove adapted to the sealing plug (7312) is arranged. In the middle of the upper surface of the fixed base (733), a weight sensor (735) is arranged. At the bottom of the quantitative feedback bearing valve plate (731), an extrusion contact post (7314) adapted to the position of the weight sensor (735) is fixedly installed. On both sides of the upper surface of the fixed base (733), telescopic rods (734) are symmetrically and fixedly installed. The upper ends of the telescopic rods (734) are fixedly installed with a movable frame (732). On the upper surface of the movable frame (732), movable pull rods (7321) are symmetrically and rotatably installed. The upper ends of the movable pull rods (7321) are movably installed with T-shaped sliders. On the lower surface of the valve plate piece (7311), a limit sliding groove adapted to the T-shaped sliders is arranged. At the top of the filtering box (81), a suction pipe (812) is fixedly installed. One end of the suction pipe (812) is fixedly connected to the side wall of the material suction bin (61). At the lower end of the filtering box (81), a feeding pipe (811) is fixedly installed. In the middle of the feeding pipe (811), an intelligent control valve is arranged. The air pump (82) is arranged on one side of the filtering box (81). The air suction pipe end of the air pump (82) is fixedly connected to the side wall of the filtering box (81).The exhaust pipe end of the air pump (82) is fixedly installed with a main gas discharge pipe (822). Below the feeding pipe (811), there is a first Venturi tube (8222). The lower end of the filter box (81) is fixedly connected to the inner wall of the narrow slot of the first Venturi tube (8222). The lower end of the main gas discharge pipe (822) is fixedly connected to one end of the first Venturi tube (8222) through a branch pipe. One end of the first Venturi tube (8222) is fixedly connected to the lower side wall of the spiral discharge pipe (72) through a bent pipe. The lower side wall of the main gas discharge pipe (822) is fixedly installed with an auxiliary exhaust pipe (8221). One end of the auxiliary exhaust pipe (8221) is fixedly connected to the side wall of the bending part of the mixed feeding and conveying pipe (93).

2. The sulfur dioxide and nitrogen oxide removal agent conveying device for flue gas treatment according to claim 1, wherein: The lower surface of the suction bin (61) is fixedly connected to the upper surface of the storage bin (71), and the lower end of the powder filter inner cover (62) passes through the top of the storage bin (71). An upper sealing mounting frame (64) and a lower sealing mounting frame (63) adapted to the suction bin (61) are fixedly installed at the upper and lower ends of the inner surface of the suction bin (61), respectively. A suction connecting pipe (611) is fixedly installed on the top of the suction bin (61), and one end of the suction connecting pipe (611) is fixedly connected to one end of the suction pipe (21) through a flange.

3. The desulfurization and denitrification agent conveying device for flue gas treatment according to claim 2, wherein: A diverter blade (621) is fixedly installed on the upper part of the powder filter inner cover (62), and particle rolling slide plates (622) are staggeredly distributed on the inner surface of the powder filter inner cover (62). The discharge port of the storage bin (71) is fixedly connected to the inner wall of the spiral discharge pipe (72), and the inner side wall of the discharge throat (73) is fixedly connected to the outer side wall of the discharge port of the spiral discharge pipe (72).

4. According to claim 3 A desulfurization and denitrification agent conveying device for flue gas treatment, characterized in that: A filter screen (83) is fixedly installed inside the filter box (81), and a support ring (831) is welded to the inner wall of the filter screen (83) through a bracket. A spring sleeve (832) is fixedly installed on one side of the support ring (831), and a trigger plate (833) is movably installed above the spring sleeve (832). An upper bracket (834) is fixedly installed on one side of the spring sleeve (832), and a rubber pad is fixedly installed on the upper surface of the upper bracket (834), and the upper end of the rubber pad is aligned with the lower end of the trigger plate (833). The surfaces are in contact with each other, a toggle rod (835) is fixedly mounted on the outer side of the upper bracket (834), a movable piece (836) is rotatably mounted on the outer side of the support ring (831), a toggle tooth groove adapted to the toggle rod (835) is provided on the middle side surface of the movable piece (836), impact balls (8361) are fixedly mounted on both ends of the movable piece (836), a limiting rod (837) is provided on one side below the touch plate (833), and one end of the limiting rod (837) is fixedly connected to the side wall of the filter screen cover (83).

5. A desulfurization and denitrification agent conveying process for flue gas treatment, according to claim 4 implemented by the desulfurization and denitrification agent conveying device for flue gas treatment described above, characterized in that: The method comprises the following steps: step 1, feeding the desulfurization and denitrification agent to be transported into the lower part of the feed bin (2) through the feeding bin (3), pulling down the suction pipe (21) so that it passes through the through slot below the feed bin (2) and is inserted into the desulfurization and denitrification agent inside the feeding bin (3), starting the air pump (82), so that the gas is sucked through the air inlet pipe (821), the air pump (82), the suction pipe (812) and the suction bin (61), and at this time, the desulfurization and denitrification agent is automatically fed into the suction bin (61) through the suction connecting pipe (611) and the suction pipe (21) by the negative pressure inside the suction bin (61); Step 2: The desulfurization and denitrification agent falls and is dispersed and shunted by the shunt blades (621) inside the powder filter inner cover (62). The particles fall due to gravity onto the particle rolling and sliding step plate (622) and then enter the storage bin (71) through the lower end of the powder filter inner cover (62). They are discharged through the spiral discharge pipe (72) and then enter the Venturi tube II (91) through the discharge throat pipe (73), and are mixed with the gas generated by the compression fan (92) and transported to the inside of the flue gas treatment equipment through the mixing and feeding conveying pipe (93) and the feeding conveying pipe (4). Step 3: During a preset fixed time period, the movable frame (732) is at the upper limit position in cooperation with the fixed base (733) to measure and feedback the mass actually discharged into the Venturi tube II (91) during this fixed time period. Then, the telescopic rod (734) pulls the movable frame (732) to the lower limit position to gradually discharge the granular desulfurization and denitrification agent through the discharge throat pipe (73) into the Venturi tube II (91). Step 4: The suction pipe (812) separates the powder agent from the granular agent and sucks it into the inside of the filter box (81). When the actual discharge amount feedback inside the discharge throat pipe (73) does not meet the standard, the intelligent control valve of the feeding pipe (811) opens, so that the powder is supplemented into the discharge throat pipe (73) through the feeding pipe (811) and the Venturi tube I (8222). Under normal circumstances, the control valve on the connecting branch pipe between the gas discharge main pipe (822) and the Venturi tube I (8222) is closed. At this time, the discharged gas will enter the elbow of the mixing and feeding conveying pipe (93) through the auxiliary exhaust pipe (8221). After the gas is supplemented, the auxiliary desulfurization and denitrification agent is smoothly output through the feeding conveying pipe (4).

Images