Tail gas recovery material drying device
By designing a exhaust gas recovery material drying device, using exhaust gas to directly heat the drying tank and materials, the problem of energy waste in the prior art is solved, and efficient material drying and humidity reduction are achieved.
Patent Information
- Application Number
- CN202421003184.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In the prior art, in the process of boiler exhaust gas drying, the use of heat exchangers adds an intermediate process, resulting in waste of energy and the inability to directly use the exhaust gas to dry solid materials.
A exhaust gas recovery material drying device is designed. By setting up a drying tank and partition in the drying box, the drying tank and materials are directly heated by exhaust gas to achieve direct drying of materials by exhaust gas.
By directly using exhaust gas to dry materials, the device avoids the use of heat exchangers, saves energy, improves drying efficiency, and reduces the humidity in the drying box.
Smart Images
Figure CN222438394U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of energy recovery, in particular to the technical field of tail gas drying, and specifically refers to a tail gas recovery material drying device. Background Art
[0002] At present, the situation facing the realization of energy conservation and emission reduction targets is very severe. The whole country has strengthened energy conservation and emission reduction work. The relevant departments have made decisions to strengthen energy conservation work, formulated a series of policies and measures to promote energy conservation and emission reduction, and made work arrangements. Energy conservation and emission reduction work has made positive progress.
[0003] In order to respond to the national call for energy conservation and emission reduction, it is necessary to recycle the heat of the exhaust gas in the boiler. However, the heat exchange equipment commonly used in the market is currently used. When drying, a heat exchanger is usually used to absorb the heat in the flue gas using a heat exchange medium, and then the solid material is dried by the heat exchange medium. For some solid materials, the use of a heat exchanger will increase the intermediate process and cause energy waste. Therefore, a device that directly uses exhaust gas to dry solid materials is needed. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a tail gas recovery material drying device, which directly uses the tail gas to dry the solid material, thus saving the use of a heat exchanger.
[0005] The utility model is a tail gas recovery material drying device realized by the following technical scheme, comprising a drying box whose top surface is connected to a feed pipe, a partition sealed in the drying box and whose length is smaller than that of the drying box, and a drying slot sealed on the partition and whose bottom end extends to below the partition, wherein the drying box is also provided with a shifting device which is arranged corresponding to the drying slot and drives the material in the corresponding drying slot to enter the next drying slot, and the drying box is also provided with an air inlet for the tail gas to enter and which is located below the drying slot, and the tail gas flows from below the drying slot and flows out from the feed inlet after bypassing the partition.
[0006] When the utility model is in use, the tail gas enters the drying box from the air inlet, flows from the bottom of the drying slot, heats the drying slot in the process of flowing, then the tail gas bypasses the partition and flows from the top of several drying slots and flows out from the feed port, the material falls into the first drying slot from the feed port, and the material is moved to several drying slots by the toggle device, heated by the tail gas, the steam in the material moves upward, and when the tail gas flows above the partition, it takes away the steam, thereby reducing the humidity in the drying box, and at the same time, in the feed pipe, the tail gas contacts the material for the first time to heat it, and at the same time, the water in the material is partially evaporated and leaves the drying box with the tail gas.
[0007] Preferably, the drying tank comprises a skirt sealed and overlapped on the partition, and a tank body fixedly connected to the skirt and penetrating the partition, wherein the projection of the tank body in the width direction of the drying box is semicircular. In this preferred solution, the semicircular projection of the tank body provides a guiding effect when the exhaust gas passes through the tank body, thereby facilitating the smooth flow of the exhaust gas.
[0008] Preferably, the shifting device comprises a rotating shaft with a sealing shaft connected to the drying box, a motor driving the rotating shaft to rotate, and a shifting plate fixedly connected to the rotating shaft and adapted to the inner surface of the tank body.
[0009] When the utility model is in use, the motor drives the rotating shaft to rotate, and the rotating shaft drives the paddle to rotate. The rotation of the paddle drives the material in the trough body to move to the next trough body. Since the trough body is semicircular, the paddle follows the inner arc surface of the trough body, which can move all the materials and avoid square structures that will cause material residue in the trough body.
[0010] Preferably, the opposite sides of two adjacent skirts are in contact. The arrangement of this preferred solution reduces the distance between the two drying grooves, so that as much material as possible can enter from one drying groove into another drying groove during fluctuation, and avoids more material remaining on the partition.
[0011] Preferably, one end of the partition is fixedly connected to a first side surface of the drying box extending along its width direction, the air inlet is opened on the first side surface, and a material guide plate is also fixedly connected to the first side surface, which is located above the partition and directly below the feed pipe, and the bottom end of the material guide plate extends to directly above the drying groove closest to the first side surface.
[0012] The configuration of this preferred solution enables the tail gas to pass through the bottom and top surfaces of all the drying slots when flowing above and below the partition, thereby heating all the drying slots.
[0013] Preferably, a plurality of wind guide plates extending obliquely downward and toward the first side surface are provided on the windward surface of the trough body.
[0014] In this preferred solution, the exhaust gas heats the air guide plate through the provision of the air guide plate, and the air guide plate then transfers the heat to the drying tank, thereby increasing the heat conduction area. At the same time, the provision of the air guide plate guides the exhaust gas into the gap between the two drying tanks, thereby achieving sufficient heating of the drying tanks.
[0015] Preferably, the second side surface opposite to the first side surface is a curved surface with the center of the circle located in the drying box. In this preferred solution, the second side surface is arranged as a curved surface, which plays a role in guiding the exhaust gas to turn.
[0016] Preferably, one end of the partition close to the second side surface is connected to a filter screen extending downward to the bottom surface of the drying box. In this preferred solution, smoke dust in the smoke is filtered out by setting the filter screen, thereby preventing the smoke dust from affecting the material.
[0017] Preferably, a blanking plate is provided between the filter screen and the second side surface, and the bottom end of the blanking plate is connected to a vertical plate extending vertically downward. The blanking plate extends downward and toward the second side surface, and the top end of the blanking plate extends to the edge of the drying box closest to the second side surface. A discharge pipe is also provided on the bottom surface of the drying box, one side of the discharge pipe is flush with the vertical plate, and the other side of the discharge pipe extends to the bottom edge of the second side surface. A number of air holes are provided on the vertical plate for exhaust gas to pass through.
[0018] When this preferred solution is in use, the material in the drying trough closest to the second side surface falls into the discharge pipe along the drop plate under the movement of the wave device. At the same time, the exhaust gas flows out from the air hole after passing through the filter screen and contacts the material, thereby heating and drying the material again. The exhaust gas continues to flow along the second curved surface, and under the blowing of the exhaust gas, part of the material will hit the second side surface and then fall into the discharge pipe.
[0019] The beneficial effects of the utility model are as follows: the tail gas enters the drying box from the air inlet, flows from the bottom of the drying slot, heats the drying slot during the flow, then the tail gas bypasses the partition and flows from the top of several drying slots and flows out from the feed port, the material falls into the first drying slot from the feed port, and the material is moved to several drying slots by the toggle device, heated by the tail gas, the steam in the material moves upward, and when the tail gas flows above the partition, it takes away the steam, thereby reducing the humidity in the drying box, and at the same time, in the feed pipe, the tail gas contacts the material for the first heating, and at the same time, the water in the material is partially evaporated and leaves the drying box with the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a perspective schematic diagram of the main view of the structure of the utility model;
[0021] Figure 2 is a partial side view of the paddle;
[0022] As shown in the figure:
[0023] 1. First side, 2. Second side, 3. Drying box, 4. Feed pipe, 5. Air inlet, 6. Rotating shaft, 7. Paddle plate, 8. Drying trough, 9. Partition plate, 10. Blanking plate, 11. Vertical plate, 12. Filter, 13. Discharge pipe, 14. Air guide plate, 15. Guide plate. DETAILED DESCRIPTION
[0024] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.
[0025] Refer to the attached Figure 1-2 The utility model discloses a drying device for material recovery from tail gas, comprising a drying box 3. On the drying box 3, two oppositely arranged side walls are a first side surface 1 and a second side surface 2. The first side surface 1 and the second side surface 2 are arranged along the length direction and both extend along the width direction.
[0026] The top surface of the drying box 3 is connected to a feed pipe 4, the side of the feed pipe 4 is flush with the first side surface 1, the first side surface 1 is connected to an air inlet pipe, the second side surface 2 is an arc surface with the center located inside the drying box 3, the bottom surface of the drying box 3 is connected to a discharge pipe 13 extending downward, the other side of the discharge pipe 13 extends to the bottom edge of the second side surface 2, and valves are provided on the feed pipe 4, the discharge pipe 13 and the air inlet pipe.
[0027] A partition 9 extending along the length direction is also sealed and fixedly connected to the first side surface 1. The width of the partition 9 is adapted to the width of the drying box 3, and the length of the partition 9 is smaller than the length of the drying box 3, that is, there is a certain distance between the partition 9 and the second side surface 2, and the three sides of the partition 9 are sealed and fixedly connected to the inner side surface of the drying box 3.
[0028] The partition 9 is also sealed with a drying slot 8 whose bottom end extends to below the partition 9. The drying box 3 is also provided with a shifting device which is arranged corresponding to the drying slot 8 and drives the material in the corresponding drying slot 8 to enter the next drying slot 8. The drying slot 8 includes a skirt sealed and overlapped on the partition 9, and a slot body fixed to the skirt and penetrating the partition 9. The projection of the slot body in the width direction of the drying box 3 is semicircular. A plurality of wind guide plates 14 extending downward and obliquely toward the first side surface 1 are provided on the windward surface of the slot body, and the opposite sides of two adjacent skirts are in contact.
[0029] The shifting device comprises a rotating shaft 6 with a sealed shaft connected to the drying box 3, a motor driving the rotating shaft 6 to rotate, and a shifting plate 7 fixedly connected to the rotating shaft 6 and adapted to the inner surface of the tank body, that is, the bottom surface of the shifting plate 7 is pressed against the inner bottom surface of the tank body, and the bottom surface of the shifting plate 7 is an arc surface adapted to the tank body, and the length of the shifting plate 7 is adapted to the length of the tank body.
[0030] A material guide plate 15 is also fixedly connected to the first side surface 1 and is located above the partition plate 9 and directly below the feed pipe 4 . The bottom end of the material guide plate 15 extends to directly above the drying groove 8 closest to the first side surface 1 .
[0031] One end of the partition 9 close to the second side 2 is connected to a filter screen 12 extending downward to the bottom surface of the drying box 3, and a blanking plate 10 is also provided between the filter screen 12 and the second side 2. The bottom end of the blanking plate 10 is connected to a vertical plate 11 extending vertically downward. The blanking plate 10 extends downward and toward the second side 2, and the top of the blanking plate 10 extends to the edge of the drying box 3 closest to the second side 2. A discharge pipe 13 is also provided on the bottom surface of the drying box 3, one side of the discharge pipe 13 is flush with the vertical plate 11, and the other side of the discharge pipe 13 extends to the bottom edge of the second side 2, and a plurality of air holes are provided on the vertical plate 11 for exhaust gas to pass through.
[0032] A feed port is provided on the side of the feed pipe 4, and a steam separator is connected to the top of the feed pipe 4.
[0033] In particular, see the attached Figure 1 The length direction is horizontal, and the width direction is perpendicular to the attached Figure 1 The direction of the plane, the vertical direction is the height direction.
[0034] When the utility model is in use, the material falls from the feed pipe 4, and under the guidance of the guide plate 15, the material enters the first drying slot 8, the driving motor drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the paddle plate 7 to rotate, and the rotation of the paddle plate 7 drives the material in the slot body to move to the next slot body. Since the slot body is semicircular, the paddle plate 7 can move all the materials along the inner arc surface of the slot body, so that the materials can enter the drying slot 8 in sequence along the length direction. The material in the last drying slot 8 falls into the discharge pipe 13 along the blanking plate 10 under the paddle of the paddle plate 7;
[0035] At the same time, the exhaust gas enters the drying box 3 from the air inlet 5, flows from the bottom of the drying slot 8, heats the drying slot 8 during the flow, and after passing through the last drying slot 8, the exhaust gas passes through the filter screen 12. Under the filtration of the filter screen, the exhaust gas flows out from the air vents, and is now in contact with the material on the blanking plate 10, thereby heating and drying the material again. After that, the exhaust gas turns along the second curved surface, bypasses the partition 9, flows over several drying slots 8, and flows out from the feed port. Heated by the exhaust gas, the steam in the material moves upward, and when the exhaust gas flows over the partition 9, it takes away the steam, thereby reducing the humidity in the drying box 3. At the same time, in the feed pipe 4, the exhaust gas heats the material for the first time, and the water in the material is also partially evaporated and leaves the drying box 3 with the exhaust gas.
[0036] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.
Claims
1. A tail gas recovery material drying device, characterized in that: The invention comprises a drying box (3) whose top surface is connected to a feed pipe (4), a partition (9) which is sealed and connected inside the drying box (3) and is shorter than the drying box (3), and a drying slot (8) which is sealed and connected to the partition (9) and whose bottom end extends to below the partition (9). The drying box (3) is also provided with a shifting device which is arranged corresponding to the drying slot (8) and drives the material in the corresponding drying slot (8) to enter the next drying slot (8). The drying box is also provided with an air inlet (5) which is located below the drying slot (8) and for allowing exhaust gas to enter. The exhaust gas flows from below the drying slot (8) and flows out from the feed inlet after bypassing the partition (9).
2. The tail gas recovery material drying device according to claim 1 is characterized in that: The drying trough (8) comprises a skirt sealed and overlapped on the partition (9), and a trough body fixedly connected to the skirt and penetrating the partition (9); the projection of the trough body in the width direction of the drying box (3) is a semicircle.
3. The tail gas recovery material drying device according to claim 2 is characterized in that: The shifting device comprises a rotating shaft (6) whose sealing shaft is connected to the drying box (3), a motor for driving the rotating shaft (6) to rotate, and a shifting plate (7) fixedly connected to the rotating shaft (6) and adapted to the inner surface of the tank body.
4. The tail gas recovery material drying device according to claim 3 is characterized in that: The opposite sides of two adjacent skirts are in contact.
5. The tail gas recovery material drying device according to claim 2 is characterized in that: One end of the partition (9) is fixedly connected to a first side surface (1) of the drying box (3) extending along the width direction thereof, the first side surface (1) is provided with the air inlet (5), and the first side surface (1) is also fixedly connected with a guide plate (15) located above the partition (9) and directly below the feed pipe (4), the bottom end of the guide plate (15) extending to directly above the drying groove (8) closest to the first side surface (1).
6. The tail gas recovery material drying device according to claim 5 is characterized in that: A plurality of wind guide plates (14) extending obliquely downward and toward the first side surface (1) are provided on the windward surface of the trough body.
7. The tail gas recovery material drying device according to claim 5 is characterized in that: The second side surface (2) arranged opposite to the first side surface (1) is a curved surface with the center of the circle located inside the drying box (3).
8. The tail gas recovery material drying device according to claim 7, characterized in that: One end of the partition plate (9) close to the second side surface (2) is connected to a filter screen (12) extending downward to the bottom surface of the drying box (3).
9. The tail gas recovery material drying device according to claim 8, characterized in that: A blanking plate (10) is also provided between the filter screen (12) and the second side surface (2), the bottom end of the blanking plate (10) is connected to a vertical plate (11) extending vertically downward, the blanking plate (10) extends downward and toward the second side surface (2), the top end of the blanking plate (10) extends to the edge of the drying box (3) closest to the second side surface (2), a discharge pipe (13) is also provided on the bottom surface of the drying box (3), one side of the discharge pipe (13) is flush with the vertical plate (11), and the other side of the discharge pipe (13) extends to the bottom edge of the second side surface (2), and a plurality of air holes for exhaust gas to pass through are provided on the vertical plate (11).