Fully-sealed flue gas waste heat drying equipment

Abstract

The invention discloses fully-sealed flue gas waste heat drying equipment which comprises an electromagnetic vibration feeder, a lifting machine, a dryer, a belt conveyor, a packaging machine and a dust remover. Materials are fed into the top of the electromagnetic vibration feeder through a loader, and the materials at the bottom of the electromagnetic vibration feeder are lifted into the dryer through the lifting machine; a dust removal cover connected with the dust remover is mounted on the outer sides of the dryer and the belt conveyor; the dryer comprises a first feeding hopper, a drying cylinder, a discharging hopper and a discharging pipe, the bottom and the top of the drying cylinder are connected with a smoke inlet pipe and a smoke exhaust pipe respectively, a drying pipe is longitudinally arranged in the drying cylinder, and the drying cylinder is installed on the supporting assembly; the top of the elevator is located on the top of the first feeding hopper, and the discharging pipe discharges materials and conveys the materials to the packaging machine through the belt conveyor. The problems of material pollution and non-uniform material heating caused by direct contact between flue gas and materials are solved, the materials are fully contacted with the flue gas, the heat exchange efficiency is improved, and material and environment pollution is reduced.

Description

Technical Field

[0001] This invention pertains to drying equipment, specifically a fully sealed flue gas waste heat drying device. Background Technology

[0002] Waste heat recovery dryers use the waste heat from boiler exhaust as the heat source for drying equipment, resulting in zero investment in heating, zero cost of heating, and no secondary pollution.

[0003] Currently, waste heat utilization drying methods include the following:

[0004] Direct heat exchange type: The flue gas directly enters the dryer (such as a rotary dryer) and comes into contact with the wet material (it is necessary to ensure that the flue gas is free of pollution).

[0005] Indirect heat exchange (more commonly used):

[0006] Flue gas-air heat exchangers (such as tubular, plate, and heat pipe type): transfer heat from flue gas to clean air, and the hot air enters the dryer; condensing heat exchangers: recover the sensible heat of flue gas + the latent heat of water vapor, with higher efficiency.

[0007] Existing dryers expose materials to direct contact with flue gas, which is corrosive and easily contaminates the materials. At the same time, the flue gas cannot heat the materials evenly, resulting in low heat exchange efficiency. Dust removal is also incomplete, leading to a poor production environment. Summary of the Invention

[0008] In order to overcome the shortcomings of existing technologies where direct contact between flue gas and materials easily leads to material contamination and uneven heating, this invention provides a fully sealed flue gas waste heat drying device that allows materials to be uniformly fed through a drying tube and fully contacted with the flue gas, thereby improving heat exchange efficiency and reducing material and environmental pollution.

[0009] The technical solution adopted by the present invention to achieve the above objectives is as follows:

[0010] A fully sealed flue gas waste heat drying device includes an electromagnetic vibrating feeder, an elevator, a dryer, a belt conveyor, a packaging machine, and a dust collector. The second feeding hopper at the top of the electromagnetic vibrating feeder is fed with material via a loader. Material at the bottom of the electromagnetic vibrating feeder is evenly fed into the bottom inlet of the elevator, which lifts the material into the dryer. Dust hoods are installed on the outside of the dryer and the belt conveyor, and these hoods are connected to the dust collector. The dryer includes a first feeding hopper, a drying cylinder, a discharge hopper, and a discharge pipe. The bottom of the first feeding hopper is connected to the top of the drying cylinder. The bottom of the drying cylinder is sequentially connected to the discharge hopper and the discharge pipe. The bottom of the drying cylinder is located on the side of the flue gas pipe and connected to the flue gas inlet pipe. Multiple drying pipes for loading materials are evenly arranged longitudinally inside the drying cylinder. The exhaust pipe at the top of the drying cylinder is connected to a desulfurization system. The bottom of the drying cylinder is mounted on a support assembly. The discharge pipe at the top of the elevator passes through the dust hood and is located at the top of the first feeding hopper. The discharge pipe is located at the top of the belt conveyor, which delivers the material to the packaging machine.

[0011] The compound modifier (hereinafter referred to as the material) is fed into the second feeding hopper by the loader, and then evenly fed into the elevator by the electromagnetic vibrating feeder. The elevator lifts the material to the first feeding hopper, and the discharge machine rotates at a constant speed, driving the material from the first feeding hopper through the drying pipe to the discharge hopper. The material in the discharge hopper is fed into the packaging machine by the belt conveyor. The dust collector covers the outside of the dryer and the belt conveyor to reduce dust during the material discharge process.

[0012] Furthermore, the top and bottom of the drying cylinder are respectively provided with a perforated plate, and the perforated plate is evenly provided with discharge holes, which are connected one-to-one with the top of the drying pipe. The drying pipe is connected to the perforated plate, and the perforated plate is connected to the drying cylinder. Material is conveyed inside the drying pipe, and flue gas is conveyed through the gaps between the drying pipes, so that the flue gas and the material can exchange heat.

[0013] Furthermore, a baffle plate is provided in the center of the drying pipe to prevent the flue gas from being directly discharged from the exhaust pipe. The baffle plate is located on one half of the exhaust pipe and is closed, which causes the flue gas to form a deflection and reduces the formation of vortices in the corners. This allows the flue gas to heat the material at the bottom for a longer time, preventing the flue gas from flowing directly from the bottom to the top and being discharged, which would result in a short drying time for the material at the bottom and fail to achieve the expected drying effect.

[0014] Furthermore, a discharge machine and a receiving hopper are provided between the discharge hopper and the discharge pipe. The discharge hopper is connected to the top of the discharge machine through a discharge hopper flange, the bottom of the discharge machine is connected to the top of the receiving hopper through a receiving hopper flange, and the bottom of the receiving hopper is connected to the discharge pipe.

[0015] Furthermore, the motor on the discharge machine is a variable frequency speed control motor, a flow meter is installed on the smoke inlet pipe, and a moisture detector is installed in the second feeding hopper. The variable frequency speed control motor, the flow meter and the moisture detector are electrically connected to the electrical intelligent control system.

[0016] Preferably, the intelligent electrical control system includes a controller, which is equipped with a flow meter control terminal, a frequency converter speed control terminal, and a moisture detector control terminal. The flow meter control terminal is electrically connected to the flow meter, the frequency converter speed control terminal is electrically connected to the frequency converter speed control motor, and the moisture detector control terminal is electrically connected to the moisture detector.

[0017] Furthermore, a compensation component is also installed between the flue pipe and the desulfurization system.

[0018] Furthermore, the compensation component includes a compensator tube, one end of which has a compensator flange connected to one end of a flue flange, the other end of which is connected to an exhaust pipe, the compensator tube is provided with a compensator annular plate, the compensator is built into the compensator annular plate, and the other end of the compensator tube is connected to a desulfurization system.

[0019] The main function of a dryer is to remove moisture from materials. The moisture content of the material discharged from the dryer is controlled by adjusting the following aspects: controlling the speed of the discharge machine and adjusting the discharge volume through an electrical intelligent control system; since the boiler flue gas temperature is fixed at 250℃, the moisture content of the material can only be controlled by adjusting the flue gas flow rate; measuring the moisture content of the material in the second feeding hopper from the source using a moisture detector, and then using the discharge time of the discharge machine to complete the full drying of the material.

[0020] Furthermore, the support assembly includes no fewer than four columns, each column having a column top plate. Second support beams for the heat exchanger are installed horizontally and vertically between the column top plates. The first and second support beams of the heat exchanger form a four-sided frame. A third support beam for the heat exchanger is installed diagonally at each corner of the four-sided frame, forming a triangle. Triangular support plates are evenly distributed on the tops of the first, second, and third support beams of the heat exchanger. The triangular support plates are connected to the outer bottom of the drying cylinder. A platform support frame is connected between the inner middle sections of the columns.

[0021] The function of the dryer is to remove moisture from the compound modifier (hereinafter referred to as the material). It uses hot flue gas for indirect heat exchange with the material. The inlet temperature of the hot flue gas is 250℃, the outlet temperature is 150℃, and the average temperature of the material is 120-80℃. The 250℃ hot flue gas is provided by a waste heat boiler. The modifier (hereinafter referred to as the material) enters the drying tube through the feeder. The hot flue gas flows upwards outside the drying tube, exchanging heat with the material. The moisture in the material evaporates naturally into the atmosphere through the first feed hopper. The 150℃ hot flue gas discharged from the dryer enters the desulfurization system for flue gas purification. The material's location within the drying tube prevents direct contact with the flue gas, reducing material contamination. Simultaneously, the material flows evenly into each drying tube, ensuring uniform heating, improving drying efficiency, and reducing heat waste.

[0022] The entire drying system has only a few dust-generating points: the feeding pipe, the belt conveyor outlet, and the packaging machine inlet. The dust generated is removed by a bag filter, and the clean air is discharged into the atmosphere. The collected dust is then treated separately, reducing pollution in the working environment. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the overall process of the present invention;

[0025] Figure 2 This is a schematic diagram of the dryer structure;

[0026] Figure 3 This is a top view of the dryer's structure.

[0027] Figure 4 This is a schematic diagram of the wind deflector structure;

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Feeding pipe, 2. Receiving hopper, 3. Receiving hopper flange, 4. Discharge machine, 5. Feeding hopper flange, 6. Feeding hopper, 7. Drying cylinder, 8. Baffle plate, 9. Smoke pipe, 10. Smoke pipe flange, 11. Compensator flange, 12. Compensator pipe, 13. Compensator, 14. Compensator annular plate, 15. First feeding hopper, 16. Drying pipe, 17. Perforated plate, 18. Base plate, 19. Column, 20. Platform support plate, 21. Column top plate, 22. First support beam of heat exchanger, 23. Second support beam of heat exchanger, 24. Third support beam of heat exchanger, 25. Triangular support plate, 26. Second feeding hopper, 27. Electromagnetic vibrating feeder, 28. Elevator, 29. Belt conveyor, 30. Packaging machine, 31. Dust collector. Detailed Implementation

[0030] Example 1

[0031] like Figures 1 to 3As shown, the fully sealed flue gas waste heat drying equipment of this embodiment includes an electromagnetic vibrating feeder 27, an elevator 28, a dryer, a belt conveyor 29, a packaging machine 30, and a dust collector 31. Material is fed into the second feeding hopper 26 at the top of the electromagnetic vibrating feeder 27 via a loader. Material at the bottom of the electromagnetic vibrating feeder 27 is evenly fed into the bottom inlet of the elevator 28, which lifts the material into the dryer. A dust collector hood is installed on the outside of the dryer and the belt conveyor 29. The top of the dust collector hood is connected to the dust collector 31 via a dust collection pipe. The dryer includes a first feeding hopper 15 and a drying cylinder 7. The drying cylinder 7 is equipped with a feeding hopper 6 and a feeding pipe 1. The bottom of the first feeding hopper 15 is connected to the top of the drying cylinder 7. The bottom of the drying cylinder 7 is connected to the feeding hopper 6 and the feeding pipe 1 in sequence. The discharge pipe at the top of the elevator passes through the dust removal hood and is located at the top of the first feeding hopper 15. The feeding pipe 1 is located at the top of the belt conveyor 29. The belt conveyor 29 delivers the material to the packaging machine 30. The bottom of the drying cylinder 7 is located on the side of the smoke pipe 9 and connected to the smoke inlet pipe 9. Multiple drying pipes 16 for loading materials are evenly arranged longitudinally inside the drying cylinder 7. The exhaust pipe 9 at the top of the drying cylinder 7 is connected to the desulfurization system. The bottom of the drying cylinder 7 is mounted on a support assembly.

[0032] Preferably, the bottom of the dryer is fixed on one side of the bottom of the dust collector hood, and the other side of the bottom of the dust collector is fixed to the discharge port end of the belt conveyor 29.

[0033] The compound modifier (hereinafter referred to as the material) is fed into the second feeding hopper 26 by a loader, and then evenly fed into the elevator 28 by an electromagnetic vibrating feeder 27. The elevator 28 lifts the material to the first feeding hopper 15. The discharge machine 4 rotates at a constant speed, carrying the material from the first feeding hopper 15 through the drying pipe 16 for drying, and then to the unloading hopper 6. The material in the unloading hopper 6 is fed into the packaging machine 30 via a belt conveyor 29. A dust collector cover is used to enclose the dryer and the outer side of the belt conveyor 29, reducing dust generation during the unloading process. A rubber floor 18 is laid at the bottom of the belt conveyor.

[0034] Furthermore, the top and bottom of the drying cylinder 7 are respectively provided with tube sheets 17, and the tube sheets 17 are evenly provided with discharge holes, which are connected one-to-one with the drying pipes 16. The drying pipes 16 are connected to the tube sheets 17, and the tube sheets 17 are connected to the drying cylinder 7. The drying pipes 16 convey materials, and the gaps between the drying pipes 16 convey flue gas, so that the flue gas and the materials can exchange heat.

[0035] Furthermore, the support assembly includes no fewer than four columns 19, each column 19 having a column top plate 21 at its top. Second support beams 23 for the heat exchanger are installed horizontally and vertically between the column top plates 21. The first support beam 22 and the second support beam 23 of the heat exchanger form a four-sided frame. A third support beam 24 of the heat exchanger is installed diagonally at each corner of the four-sided frame, forming a triangle. Triangular support plates 25 are evenly distributed on the tops of the first support beam 22, the second support beam 23, and the third support beam 24. The triangular support plates 25 are connected to the outer bottom of the drying cylinder 7. A platform support plate 20 is connected between the inner middle parts of the columns 19.

[0036] Example 2

[0037] like Figures 1 to 4 As shown, the fully sealed flue gas waste heat drying equipment of this embodiment includes an electromagnetic vibrating feeder 27, an elevator 28, a dryer, a belt conveyor 29, a packaging machine 30, and a dust collector 31. The second feeding hopper 26 at the top of the electromagnetic vibrating feeder 27 is fed with material by a loader. The material at the bottom of the electromagnetic vibrating feeder 27 is evenly fed into the bottom inlet of the elevator 28, which lifts the material into the dryer. A dust collector hood is installed on the outside of the dryer and the belt conveyor 29, and the top of the dust collector hood is connected to the dust collector 31 through a dust collection pipe. The dryer includes a first feeding hopper 15 and a drying cylinder. 7. Feed hopper 6 and feed pipe 1: The bottom of the first feeding hopper 15 is connected to the top of the drying cylinder 7. The bottom of the drying cylinder 7 is sequentially connected to the feeding hopper 6 and the feed pipe 1. The discharge pipe at the top of the elevator passes through the dust collector and is located at the top of the first feeding hopper 15. The feed pipe 1 is located at the top of the belt conveyor 29. The belt conveyor 29 delivers the material to the packaging machine 30. The bottom of the drying cylinder 7 is located on the side of the flue pipe and connected to the flue pipe. Multiple drying pipes 16 for loading materials are evenly arranged longitudinally inside the drying cylinder 7. The exhaust pipe 9 at the top of the drying cylinder 7 is connected to the desulfurization system. The bottom of the drying cylinder 7 is mounted on the support assembly.

[0038] The compound modifier (hereinafter referred to as the material) is fed into the second feeding hopper 26 by a loader, and then evenly fed into the elevator 28 by an electromagnetic vibrating feeder 27. The elevator 28 lifts the material to the first feeding hopper 15. The discharge machine 4 rotates at a constant speed, carrying the material from the first feeding hopper 15 through the drying pipe 16 for drying, and then to the unloading hopper 6. The material in the unloading hopper 6 is fed into the packaging machine 30 via a belt conveyor 29. A dust collector cover is used to enclose the dryer and the outer side of the belt conveyor 29, reducing dust generation during the unloading process. A rubber floor 18 is laid at the bottom of the belt conveyor.

[0039] Preferably, the bottom of the dryer is fixed on one side of the bottom of the dust collector hood, and the other side of the bottom of the dust collector is fixed to the discharge port end of the belt conveyor 29.

[0040] The compound modifier (hereinafter referred to as the material) is fed into the second feeding hopper 26 by a loader, and then evenly fed into the elevator 28 by an electromagnetic vibrating feeder 27. The elevator 28 lifts the material to the first feeding hopper 15. The discharge machine 4 rotates at a constant speed, carrying the material from the first feeding hopper 15 through the drying pipe 16 for drying, and then to the unloading hopper 6. The material in the unloading hopper 6 is fed into the packaging machine 30 via a belt conveyor 29. A dust collector cover is used to enclose the dryer and the outer side of the belt conveyor 29, reducing dust generation during the unloading process. A rubber floor 18 is laid at the bottom of the belt conveyor.

[0041] Furthermore, the top and bottom of the drying cylinder 7 are respectively provided with tube sheets 17, and the tube sheets 17 are evenly provided with discharge holes, which are connected one-to-one with the drying pipes 16. The drying pipes 16 are connected to the tube sheets 17, and the tube sheets 17 are connected to the drying cylinder 7. The drying pipes 16 convey materials, and the gaps between the drying pipes 16 convey flue gas, so that the flue gas and the materials can exchange heat.

[0042] Furthermore, the drying pipe 16 is provided with a baffle plate 8 in the center to prevent the flue gas from being directly discharged from the exhaust pipe 9. The baffle plate 8 is located on one half of the exhaust pipe 9 and is closed, so that the flue gas forms a deflection and reduces the formation of vortices in the corners, so that the flue gas can heat the material at the bottom for a longer time. This prevents the flue gas from flowing directly from the bottom to the top and being discharged, which would result in a short drying time for the material at the bottom and fail to achieve the expected drying effect.

[0043] Furthermore, a discharge machine 4 and a receiving hopper 2 are provided between the discharge hopper 6 and the discharge pipe 1. The discharge hopper 6 is connected to the top of the discharge machine 4 through the discharge hopper 6 flange 5, and the bottom of the discharge machine 4 is connected to the top of the receiving hopper 2 through the receiving hopper flange 3. The bottom of the receiving hopper 2 is connected to the discharge pipe 1.

[0044] Furthermore, the support assembly includes no fewer than four columns 19, each column 19 having a column top plate 21 at its top. Second support beams 23 for the heat exchanger are installed horizontally and vertically between the column top plates 21. The first support beam 22 and the second support beam 23 of the heat exchanger form a four-sided frame. A third support beam 24 of the heat exchanger is installed diagonally at each corner of the four-sided frame, forming a triangle. Triangular support plates 25 are evenly distributed on the tops of the first support beam 22, the second support beam 23, and the third support beam 24. The triangular support plates 25 are connected to the outer bottom of the drying cylinder 7. A platform support plate 20 is connected between the inner middle parts of the columns 19.

[0045] Example 3

[0046] like Figures 1 to 4As shown, the fully sealed flue gas waste heat drying equipment of this embodiment includes an electromagnetic vibrating feeder 27, an elevator 28, a dryer, a belt conveyor 29, a packaging machine 30, and a dust collector 31. The second feeding hopper 26 at the top of the electromagnetic vibrating feeder 27 is fed with material by a loader. The material at the bottom of the electromagnetic vibrating feeder 27 is evenly fed into the bottom inlet of the elevator 28, which lifts the material into the dryer. A dust collector hood is installed on the outside of the dryer and the belt conveyor 29, and the top of the dust collector hood is connected to the dust collector 31 through a dust collection pipe. The dryer includes a first feeding hopper 15 and a drying cylinder 7. The first feeding hopper 15 is connected to the top of the drying cylinder 7 at its bottom. The bottom of the drying cylinder 7 is connected to the feeding hopper 6 and the feeding pipe 1 in sequence. The discharge pipe at the top of the elevator passes through the dust removal hood and is located at the top of the first feeding hopper 15. The feeding pipe 1 is located at the top of the belt conveyor 29. The belt conveyor 29 delivers the material to the packaging machine 30. The bottom of the drying cylinder 7 is located on the side of the boiler waste heat flue pipe and is connected to the flue gas inlet pipe. Multiple drying pipes 16 for loading materials are evenly arranged longitudinally inside the drying cylinder 7. The exhaust pipe 9 at the top of the drying cylinder 7 is connected to the desulfurization system. The bottom of the drying cylinder 7 is mounted on the support assembly.

[0047] Preferably, the bottom of the dryer is fixed on one side of the bottom of the dust collector hood, and the other side of the bottom of the dust collector is fixed to the discharge port end of the belt conveyor 29.

[0048] The compound modifier (hereinafter referred to as the material) is fed into the second feeding hopper 26 by a loader, and then evenly fed into the elevator 28 by an electromagnetic vibrating feeder 27. The elevator 28 lifts the material to the first feeding hopper 15. The discharge machine 4 rotates at a constant speed, carrying the material from the first feeding hopper 15 through the drying pipe 16 for drying, and then to the unloading hopper 6. The material in the unloading hopper 6 is fed into the packaging machine 30 via a belt conveyor 29. A dust collector cover is used to enclose the dryer and the outer side of the belt conveyor 29, reducing dust generation during the unloading process. A rubber floor 18 is laid at the bottom of the belt conveyor.

[0049] Furthermore, the top and bottom of the drying cylinder 7 are respectively provided with tube sheets 17, and the tube sheets 17 are evenly provided with discharge holes, which are connected one-to-one with the drying pipes 16. The drying pipes 16 are connected to the tube sheets 17, and the tube sheets 17 are connected to the drying cylinder 7. The drying pipes 16 convey materials, and the gaps between the drying pipes 16 convey flue gas, so that the flue gas and the materials can exchange heat.

[0050] Furthermore, the drying pipe 16 is provided with a baffle plate 8 in the center to prevent the flue gas from being directly discharged from the exhaust pipe 9. The baffle plate 8 is located on one half of the exhaust pipe 9 and is closed, so that the flue gas forms a deflection and reduces the formation of vortices in the corners. This allows the flue gas to heat the material at the bottom for a longer time, preventing the flue gas from flowing directly from the bottom to the top and being discharged, which would result in a short drying time for the material at the bottom and fail to achieve the expected drying effect.

[0051] Furthermore, a discharge machine 4 and a receiving hopper 2 are provided between the discharge hopper 6 and the discharge pipe 1. The discharge hopper 6 is connected to the top of the discharge machine 4 through the discharge hopper 6 flange 5, and the bottom of the discharge machine 4 is connected to the top of the receiving hopper 2 through the receiving hopper flange 3. The bottom of the receiving hopper 2 is connected to the discharge pipe 1.

[0052] Furthermore, the motor on the discharge machine 4 is a variable frequency speed control motor, a flow meter is installed on the smoke inlet pipe 9, and a moisture detector is installed in the second feeding hopper 26. The variable frequency speed control motor, the flow meter and the moisture detector are electrically connected to the electrical intelligent control system.

[0053] Preferably, the intelligent electrical control system includes a controller, which is equipped with a flow meter control terminal, a frequency converter speed control terminal, and a moisture detector control terminal. The flow meter control terminal is electrically connected to the flow meter, the frequency converter speed control terminal is electrically connected to the frequency converter speed control motor, and the moisture detector control terminal is electrically connected to the moisture detector.

[0054] The main function of the dryer is to remove moisture from the material. The moisture content of the material discharged from the dryer is controlled by adjusting the following aspects: the speed of the discharge machine 4 is controlled by the electrical intelligent control system to adjust the discharge volume; since the boiler flue gas temperature is fixed at 250℃, the moisture content of the material can only be controlled by adjusting the flue gas flow rate; the moisture content of the material in the second feeding hopper 26 is measured by a moisture detector at the source, and the discharge time of the discharge machine 4 is used to complete the full drying of the material.

[0055] Furthermore, the support assembly includes no fewer than four columns 19, each column 19 having a column top plate 21 at its top. Second support beams 23 for the heat exchanger are installed horizontally and vertically between the column top plates 21. The first support beam 22 and the second support beam 23 of the heat exchanger form a four-sided frame. A third support beam 24 of the heat exchanger is installed diagonally at each corner of the four-sided frame, forming a triangle. Triangular support plates 25 are evenly distributed on the tops of the first support beam 22, the second support beam 23, and the third support beam 24. The triangular support plates 25 are connected to the outer bottom of the drying cylinder 7. A platform support plate 20 is connected between the inner middle parts of the columns 19.

[0056] Example 4

[0057] like Figures 1 to 4As shown, the fully sealed flue gas waste heat drying equipment of this embodiment includes an electromagnetic vibrating feeder 27, an elevator 28, a dryer, a belt conveyor 29, a packaging machine 30, and a dust collector 31. The second feeding hopper 26 at the top of the electromagnetic vibrating feeder 27 is fed with material by a loader. The material at the bottom of the electromagnetic vibrating feeder 27 is evenly fed into the bottom inlet of the elevator 28, which lifts the material into the dryer. A dust collector hood is installed on the outside of the dryer and the belt conveyor 29, and the top of the dust collector hood is connected to the dust collector 31 through a dust collection pipe. The dryer includes a first feeding hopper 15 and a drying cylinder 7. The first feeding hopper 15 is connected to the top of the drying cylinder 7 at its bottom. The bottom of the drying cylinder 7 is connected to the feeding hopper 6 and the feeding pipe 1 in sequence. The discharge pipe at the top of the elevator passes through the dust removal hood and is located at the top of the first feeding hopper 15. The feeding pipe 1 is located at the top of the belt conveyor 29. The belt conveyor 29 delivers the material to the packaging machine 30. The bottom of the drying cylinder 7 is located on the side of the boiler waste heat flue pipe and is connected to the flue gas inlet pipe. Multiple drying pipes 16 for loading materials are evenly arranged longitudinally inside the drying cylinder 7. The exhaust pipe 9 at the top of the drying cylinder 7 is connected to the desulfurization system. The bottom of the drying cylinder 7 is mounted on the support assembly.

[0058] The compound modifier (hereinafter referred to as the material) is fed into the second feeding hopper 26 by a loader, and then evenly fed into the elevator 28 by an electromagnetic vibrating feeder 27. The elevator 28 lifts the material to the first feeding hopper 15. The discharge machine 4 rotates at a constant speed, carrying the material from the first feeding hopper 15 through the drying pipe 16 for drying, and then to the unloading hopper 6. The material in the unloading hopper 6 is fed into the packaging machine 30 via a belt conveyor 29. A dust collector cover is used to enclose the dryer and the outer side of the belt conveyor 29, reducing dust generation during the unloading process. A rubber floor 18 is laid at the bottom of the belt conveyor.

[0059] Furthermore, the top and bottom of the drying cylinder 7 are respectively provided with tube sheets 17, and the tube sheets 17 are evenly provided with discharge holes, which are connected one-to-one with the drying pipes 16. The drying pipes 16 are connected to the tube sheets 17, and the tube sheets 17 are connected to the drying cylinder 7. The drying pipes 16 convey materials, and the gaps between the drying pipes 16 convey flue gas, so that the flue gas and the materials can exchange heat.

[0060] Furthermore, the drying pipe 16 is provided with a baffle plate 8 in the center to prevent the flue gas from being directly discharged from the exhaust pipe 9. The baffle plate 8 is located on one half of the exhaust pipe 9 and is closed, so that the flue gas forms a deflection and reduces the formation of vortices in the corners. This allows the flue gas to heat the material at the bottom for a longer time, preventing the flue gas from flowing directly from the bottom to the top and being discharged, which would result in a short drying time for the material at the bottom and fail to achieve the expected drying effect.

[0061] Furthermore, a discharge machine 4 and a receiving hopper 2 are provided between the discharge hopper 6 and the discharge pipe 1. The discharge hopper 6 is connected to the top of the discharge machine 4 through the discharge hopper 6 flange 5, and the bottom of the discharge machine 4 is connected to the top of the receiving hopper 2 through the receiving hopper flange 3. The bottom of the receiving hopper 2 is connected to the discharge pipe 1.

[0062] Furthermore, the motor on the discharge machine 4 is a variable frequency speed control motor, a flow meter is installed on the smoke inlet pipe 9, and a moisture detector is installed in the second feeding hopper 26. The variable frequency speed control motor, the flow meter and the moisture detector are electrically connected to the electrical intelligent control system.

[0063] Preferably, the intelligent electrical control system includes a controller, which is equipped with a flow meter control terminal, a frequency converter speed control terminal, and a moisture detector control terminal. The flow meter control terminal is electrically connected to the flow meter, the frequency converter speed control terminal is electrically connected to the frequency converter speed control motor, and the moisture detector control terminal is electrically connected to the moisture detector.

[0064] Furthermore, a compensation component is also installed between the flue pipe 9 and the desulfurization system.

[0065] Furthermore, the compensation assembly includes a compensator pipe 12, with a compensator flange 11 at one end of the compensator pipe 12 connected to one end of the flue pipe flange 10, and the other end of the flue pipe flange 10 connected to the exhaust pipe 9. The compensator pipe 12 is provided with a compensator pipe annular plate 14, and a compensator 13 is built into the compensator annular plate 14. The other end of the compensator pipe 12 is connected to the desulfurization system.

[0066] The main function of the dryer is to remove moisture from the material. The moisture content of the material discharged from the dryer is controlled by adjusting the following aspects: the speed of the discharge machine 4 is controlled by the electrical intelligent control system to adjust the discharge volume; since the boiler flue gas temperature is fixed at 250℃, the moisture content of the material can only be controlled by adjusting the flue gas flow rate; the moisture content of the material in the second feeding hopper 26 is measured by a moisture detector at the source, and the discharge time of the discharge machine 4 is used to complete the full drying of the material.

[0067] Furthermore, the support assembly includes no fewer than four columns 19, each column 19 having a column top plate 21 at its top. Second support beams 23 for the heat exchanger are installed horizontally and vertically between the column top plates 21. The first support beam 22 and the second support beam 23 of the heat exchanger form a four-sided frame. A third support beam 24 of the heat exchanger is installed diagonally at each corner of the four-sided frame, forming a triangle. Triangular support plates 25 are evenly distributed on the tops of the first support beam 22, the second support beam 23, and the third support beam 24. The triangular support plates 25 are connected to the outer bottom of the drying cylinder 7. A platform support plate 20 is connected between the inner middle parts of the columns 19.

[0068] The controller, flow meter, variable frequency speed control motor and moisture detector in the above embodiments all adopt existing general models.

[0069] In use, the composite modifier (hereinafter referred to as the material) is fed into the second feeding hopper 26 by the loader, and then evenly fed into the elevator 28 by the electromagnetic vibrating feeder 27. The elevator 28 lifts the material to the first feeding hopper 15. The material in the feeding hopper 15 enters the drying pipe 16 through the discharge hole on the tube sheet 17. The discharge machine 4 rotates at a constant speed, driving the material from the first feeding hopper 15 through the drying pipe 16 to the unloading hopper 6 after drying. The material in the unloading hopper 6 is sent to the packaging machine 30 by the belt conveyor 29. After the boiler flue gas enters the drying cylinder 7, it dries the material along the gap formed between the drying pipe 16 and the drying cylinder 7. The flue gas finally flows into the denitrification system from the exhaust pipe 9.

[0070] The above description represents preferred embodiments of the present invention. The specific embodiments are provided solely for a better understanding of the invention's concept. Those skilled in the art will recognize that various improvements or equivalent substitutions can be made based on the principles of the present invention, and these improvements or equivalent substitutions are also considered to fall within the scope of protection of the present invention.

Claims

1. A fully sealed flue gas waste heat drying device, comprising an electromagnetic vibrating feeder, an elevator, a dryer, a belt conveyor, a packaging machine, and a dust collector, wherein the second feeding hopper at the top of the electromagnetic vibrating feeder is fed with material by a loader, and the material at the bottom of the electromagnetic vibrating feeder is evenly fed into the bottom inlet of the elevator, which lifts the material into the dryer, characterized in that... The dryer and belt conveyor are equipped with dust collection hoods on their outer sides, which are connected to the dust collector. The dryer includes a first feeding hopper, a drying cylinder, a discharge hopper, and a discharge pipe. The bottom of the first feeding hopper is connected to the top of the drying cylinder. The bottom of the drying cylinder is sequentially connected to the discharge hopper and the discharge pipe. The bottom of the drying cylinder is located on the side of the flue pipe and connected to the flue pipe. Multiple drying pipes for loading materials are evenly arranged longitudinally inside the drying cylinder. The exhaust pipe at the top of the drying cylinder is connected to the desulfurization system. The bottom of the drying cylinder is mounted on a support assembly. The discharge pipe at the top of the elevator passes through the dust collection hood and is located at the top of the first feeding hopper. The discharge pipe is located at the top of the belt conveyor, which delivers the material to the packaging machine.

2. The fully sealed flue gas waste heat drying equipment according to claim 1, characterized in that, The top and bottom of the drying cylinder are respectively provided with a tube sheet, and the tube sheet is evenly provided with discharge holes. The discharge holes are connected to the drying pipes one by one. The drying pipes are connected to the tube sheet, and the tube sheet is connected to the drying cylinder.

3. The fully sealed flue gas drying equipment according to claim 1, characterized in that, The drying pipe is equipped with a baffle plate in the center to prevent flue gas from being directly discharged from the exhaust pipe. The baffle plate is located on one side of the exhaust pipe and is closed.

4. The fully sealed flue gas waste heat drying equipment according to claim 1, characterized in that, A discharge machine and a receiving hopper are also provided between the discharge hopper and the discharge pipe. The discharge hopper is connected to the top of the discharge machine through the discharge hopper flange, and the bottom of the discharge machine is connected to the top of the receiving hopper through the receiving hopper flange. The bottom of the receiving hopper is connected to the discharge pipe.

5. The fully sealed flue gas waste heat drying equipment according to claim 4, characterized in that, The motor on the discharge machine is a variable frequency speed control motor, a flow meter is installed on the smoke inlet pipe, and a moisture detector is installed in the second feeding hopper. The variable frequency speed control motor, the flow meter and the moisture detector are electrically connected to the electrical intelligent control system.

6. The fully sealed flue gas waste heat drying equipment according to claim 5, characterized in that, The electrical intelligent control system includes a controller, which is equipped with a flow meter control terminal, a frequency converter speed control terminal, and a moisture detector control terminal. The flow meter control terminal is electrically connected to the flow meter, the frequency converter speed control terminal is electrically connected to the frequency converter speed control motor, and the moisture detector control terminal is electrically connected to the moisture detector.

7. The fully sealed flue gas waste heat drying equipment according to claim 1, characterized in that, A compensation component is also installed between the flue pipe and the desulfurization and denitrification system.

8. The fully sealed flue gas waste heat drying equipment according to claim 7, characterized in that, The compensation component includes a compensator tube, one end of which is connected to a compensator flange connected to one end of a flue pipe flange, the other end of which is connected to a flue pipe, a compensator annular plate is provided on the compensator tube, a compensator is built into the compensator annular plate, and the other end of the compensator tube is connected to a desulfurization system.

9. The fully sealed flue gas waste heat drying equipment according to claim 1, characterized in that, The support assembly includes no fewer than four columns, each with a column top plate. Second support beams for the heat exchanger are installed horizontally and vertically between the column top plates. The first and second support beams form a four-sided frame. A third support beam for the heat exchanger is installed diagonally at each corner of the four-sided frame, forming a triangle. Triangular support plates are evenly distributed on the tops of the first, second, and third support beams. These triangular support plates are connected to the outer bottom of the drying cylinder. A platform support frame is connected between the inner middle sections of the columns.

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