Drying and roasting integrated furnace

Abstract

The utility model discloses a drying roasting integrated furnace relates to drying roasting furnace technical field, including furnace body, feeding auger, storage box and heat exchange water tank, the one side of heat exchange water tank is fixedly installed with air pump, the input end of air pump is fixedly installed with exhaust pipe, the top of furnace body is installed with a plurality of smoke outlet pipe, the top of furnace body is installed with the exhaust pipe. The raw material preheating device has the advantages that after hot water in the heat exchange water tank is pumped out through the water pumping pipe, the hot water is guided into the snakelike hole groove through the water guide pipe to heat the material storage tank, and then raw materials in the material storage tank can be preheated; and the preheated water finally flows back into the heat exchange water tank through the return pipe to realize circular flow, so that heat in the flue gas is effectively recycled, meanwhile, the time for the raw materials to enter the furnace body for drying and roasting subsequently is shortened by preheating the raw materials, and the overall production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying and roasting furnaces, in particular to a drying and roasting integrated furnace. Background Art

[0002] The production process of yellow phosphorus is relatively simple. Phosphate ore, silica and coke are placed in an electric furnace in a certain proportion and particle size. Decomposition and reduction reactions occur at a high temperature of more than 1000 degrees. The phosphorus vapor and furnace dust are cooled and rinsed together to obtain the product, and the high-temperature slag is directly discharged from the integrated furnace.

[0003] At present, the existing yellow phosphorus will produce a variety of toxic and harmful gases during the production process through an integrated furnace, including carbon monoxide, sulfur dioxide, nitrogen dioxide, phosphorus pentoxide and hydrogen fluoride. The harmful gases produced often need to be desulfurized and other treatments before they can be discharged. The existing integrated furnace does not have the function of recycling flue gas, which easily leads to waste of resources and cannot recover heat for preheating raw materials. Therefore, there are certain shortcomings. For this reason, we have proposed a drying and roasting integrated furnace. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a drying and roasting integrated furnace, which solves the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a drying and roasting integrated furnace, including a furnace body, a feeding auger, a storage box and a heat exchange tank, an air pump is fixedly installed on one side of the heat exchange tank, an exhaust pipe is fixedly installed on the input end of the air pump, a plurality of smoke exhaust pipes are installed on the top of the furnace body, a smoke collecting hood is fixedly installed on the top of the smoke exhaust pipe, one end of the exhaust pipe is fixedly connected to one side of the smoke collecting hood, a partition is fixedly installed in the middle of the heat exchange tank, a first water pump is fixedly installed inside the heat exchange tank and on one side of the partition, and a cloth is fixedly installed on the output end of the first water pump. Water pipe, a plurality of heat exchange tubes are fixedly installed on one side of the water distribution pipe, and the heat exchange tubes pass through the interior of the partition, and a second water pump is provided on one side of the heat exchange water tank, and a water pumping pipe is fixedly installed on the input end of the second water pump, and one end of the water pumping pipe extends to the interior of the heat exchange water tank, and a water guide pipe is fixedly installed on the output end of the second water pump, and a serpentine hole groove is provided on the inner wall of the storage box, and one end of the water guide pipe is communicated with the interior of the serpentine hole groove, and a return pipe is fixedly installed on the inside of the top of the storage box, and one end of the return pipe is communicated with the interior of the serpentine hole groove, and the other end of the return pipe extends to the interior of the heat exchange water tank.

[0006] Preferably, an aeration plate is fixedly installed inside the heat exchange water tank and on the other side of the partition, the output end of the air pump extends to the inside of the heat exchange water tank, a number of air distribution holes are opened inside the aeration plate, and a number of guide plates are fixedly installed on the inner wall of the heat exchange water tank and one side of the partition.

[0007] Preferably, a feed pipe is provided at the bottom of the storage box, one end of the feed pipe extends to the input end of the feed auger, and the output end of the feed auger extends to the inside of the top of the furnace body.

[0008] Preferably, a smoke guide pipe is provided on the top of the heat exchange water tank.

[0009] Preferably, two water supply pipes are fixedly installed on the top of the heat exchange water tank, and two drainage pipes are fixedly installed on both sides of the bottom of the heat exchange water tank.

[0010] Preferably, a control valve is provided inside the discharge pipe.

[0011] The utility model provides a drying and roasting integrated furnace, which has the following beneficial effects:

[0012] 1. The drying and roasting integrated furnace is coordinated with a heat exchange water tank, an air pump, an exhaust pipe, a smoke exhaust pipe, a smoke hood, a partition, a first water pump, a water distribution pipe, a heat exchange pipe, a second water pump, a water exhaust pipe, a water guide pipe, a serpentine hole groove and a return pipe. During the production process, the harmful smoke generated when the furnace body is roasted can be discharged through the smoke exhaust pipe and the smoke hood. After the air pump is turned on, the exhaust pipe draws the smoke in the smoke hood out and discharges it into the heat exchange water tank, which can heat the desulfurization liquid on one side of the partition in the heat exchange water tank. Then, the first water pump is turned on to guide the water on the other side of the partition in the heat exchange water tank into the heat exchange water tank. After being distributed in the water pipe, it exchanges heat with the heated water through several heat exchange pipes to heat the water on the other side of the partition. Finally, the second water pump is turned on to extract the hot water in the heat exchange water tank through the water pumping pipe and then introduce it into the serpentine hole groove through the water guide pipe to heat the storage box to preheat the raw materials inside. The preheated water finally flows back into the heat exchange water tank through the return pipe to realize circulation flow, which effectively recycles the heat in the flue gas. At the same time, the preheating of the raw materials reduces the time for subsequent drying and roasting in the furnace body, thereby improving its overall production efficiency.

[0013] 2. The drying and roasting integrated furnace cooperates with the aeration plate, air distribution holes and guide plate. The air pump introduces the flue gas into the heat exchange water tank for aeration through the aeration plate and air distribution holes, which increases the contact area between the flue gas and the desulfurization liquid in the heat exchange water tank. At the same time, the flue gas is discharged after being diverted by the guide plate, which extends its shedding time in the heat exchange water tank and improves the desulfurization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 For this utility model Figure 2 A magnified view of point A in the figure;

[0017] Figure 4 This is a cross-sectional view of the aeration plate of the present utility model.

[0018] In the figure: 1. furnace body; 2. feeding auger; 3. storage box; 4. heat exchange water tank; 5. air pump; 6. exhaust pipe; 7. smoke outlet pipe; 8. smoke hood; 9. aeration plate; 10. air distribution holes; 11. guide plate; 12. partition; 13. first water pump; 14. water distribution pipe; 15. heat exchange pipe; 16. second water pump; 17. water extraction pipe; 18. water guide pipe; 19. serpentine hole; 20. return pipe; 21. discharge pipe; 22. smoke guide pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figures 1 to 4 The utility model provides a technical solution: a drying and roasting integrated furnace, including a furnace body 1, a feeding auger 2, a storage box 3 and a heat exchange tank 4, an air pump 5 is fixedly installed on one side of the heat exchange tank 4, an exhaust pipe 6 is fixedly installed on the input end of the air pump 5, a plurality of smoke exhaust pipes 7 are installed on the top of the furnace body 1, a smoke collecting hood 8 is fixedly installed on the top of the smoke exhaust pipe 7, one end of the exhaust pipe 6 is fixedly connected to one side of the smoke collecting hood 8, a partition 12 is fixedly installed in the middle of the heat exchange tank 4, a first water pump 13 is fixedly installed inside the heat exchange tank 4 and on one side of the partition 12, a water distribution pipe 14 is fixedly installed on the output end of the first water pump 13, and a water distribution pipe 14 is fixedly installed on one side of the water distribution pipe 14. A plurality of heat exchange tubes 15 are fixedly installed on the side, and the heat exchange tubes 15 pass through the interior of the partition 12. A second water pump 16 is provided on one side of the heat exchange tank 4. A water pump 17 is fixedly installed on the input end of the second water pump 16, and one end of the water pump 17 extends to the interior of the heat exchange tank 4. A water guide pipe 18 is fixedly installed on the output end of the second water pump 16. A serpentine hole groove 19 is provided on the inner wall of the storage box 3, and one end of the water guide pipe 18 is connected with the interior of the serpentine hole groove 19. A return pipe 20 is fixedly installed on the inside of the top of the storage box 3, and one end of the return pipe 20 is connected with the interior of the serpentine hole groove 19, and the other end of the return pipe 20 extends to the interior of the heat exchange tank 4.

[0021] An aeration plate 9 is fixedly installed inside the heat exchange water tank 4 and on the other side of the partition 12. The output end of the air pump 5 extends to the inside of the heat exchange water tank 4. A number of air distribution holes 10 are opened inside the aeration plate 9. A number of guide plates 11 are fixedly installed on the inner wall of the heat exchange water tank 4 and one side of the partition 12. A smoke guide pipe 22 is provided on the top of the heat exchange water tank 4. Two water supply pipes are fixedly installed on the top of the heat exchange water tank 4, and two drainage pipes are fixedly installed on both sides of the bottom of the heat exchange water tank 4.

[0022] A discharge pipe 21 is provided at the bottom of the storage box 3, and a control valve is provided inside the discharge pipe 21. One end of the discharge pipe 21 extends to the input end of the feeding auger 2, and the output end of the feeding auger 2 extends to the inside of the top of the furnace body 1, wherein the interior of the furnace body 1 is provided with a heating mechanism and a material guiding and conveying mechanism for drying and roasting. The material guiding and conveying mechanism is three staggered conveyor belts, which can make the material entering the furnace body 1 first conveyed through the top conveyor belt, and then discharged to another conveyor belt for subsequent drying and roasting, and finally transported to the bottom conveyor belt for discharge after drying and roasting.

[0023] In summary, when the drying and roasting integrated furnace is in use, during the production process, the harmful flue gas generated during the roasting of the furnace body 1 can be discharged through the smoke outlet pipe 7 and the smoke hood 8. After the air pump 5 is turned on, the exhaust pipe 6 draws the flue gas in the smoke hood 8 out and discharges it into the heat exchange water tank 4. The flue gas introduced into the heat exchange water tank 4 by the air pump 5 is aerated through the aeration plate 9 and the air distribution holes 10, which increases the contact area between the flue gas and the desulfurization liquid in the heat exchange water tank 4. At the same time, the flue gas is discharged after being diverted by the guide plate 11, which extends its shedding time in the heat exchange water tank 4 and improves the desulfurization effect. At the same time, the flue gas can heat the desulfurization liquid on one side of the partition 12 in the heat exchange water tank 4, and then the first water pump 13 is turned on to heat the desulfurization liquid. The water on the other side of the partition 12 in the heat exchange water tank 4 is introduced into the water distribution pipe 14 and then heat-exchanged with the heated water through a number of heat exchange pipes 15 to heat the water on the other side of the partition 12. Finally, the second water pump 16 is turned on to extract the hot water in the heat exchange water tank 4 through the pumping pipe 17 and then introduce it into the serpentine hole groove 19 through the water guide pipe 18 to heat the storage box 3 to preheat the raw materials inside it. The preheated water finally flows back into the heat exchange water tank 4 through the return pipe 20 to realize circulation, effectively recycling the heat in the flue gas. At the same time, preheating the raw materials reduces the time for them to enter the furnace body 1 for drying and roasting, thereby improving their overall production efficiency.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drying and roasting integrated furnace, comprising a furnace body (1), a feeding auger (2), a storage box (3) and a heat exchange water tank (4), characterized in that: An air pump (5) is fixedly installed on one side of the heat exchange water tank (4), an exhaust pipe (6) is fixedly installed on the input end of the air pump (5), a plurality of smoke exhaust pipes (7) are fixedly installed on the top of the smoke exhaust pipe (7), a smoke collecting hood (8) is fixedly installed on the top of the smoke exhaust pipe (7), one end of the exhaust pipe (6) is fixedly connected to one side of the smoke collecting hood (8), a partition (12) is fixedly installed in the middle of the interior of the heat exchange water tank (4), a first water pump (13) is fixedly installed inside the heat exchange water tank (4) and on one side of the partition (12), a water distribution pipe (14) is fixedly installed on the output end of the first water pump (13), a plurality of heat exchange pipes (15) are fixedly installed on one side of the water distribution pipe (14), and the heat exchange pipes (15) are fixedly installed on the A second water pump (16) is provided on one side of the heat exchange tank (4) through the interior of the partition (12), and a water pump (17) is fixedly installed on the input end of the second water pump (16), and one end of the water pump (17) extends to the interior of the heat exchange tank (4). A water guide pipe (18) is fixedly installed on the output end of the second water pump (16). A serpentine hole groove (19) is opened on the inner wall of the storage box (3), and one end of the water guide pipe (18) is connected to the interior of the serpentine hole groove (19). A return pipe (20) is fixedly installed on the top of the storage box (3), and one end of the return pipe (20) is connected to the interior of the serpentine hole groove (19), and the other end of the return pipe (20) extends to the interior of the heat exchange tank (4).

2. The drying and roasting integrated furnace according to claim 1, characterized in that: An aeration plate (9) is fixedly installed inside the heat exchange water tank (4) and on the other side of the partition (12). The output end of the air pump (5) extends into the interior of the heat exchange water tank (4). A plurality of air distribution holes (10) are provided inside the aeration plate (9). A plurality of guide plates (11) are fixedly installed on the inner wall of the heat exchange water tank (4) and one side of the partition (12).

3. The drying and roasting integrated furnace according to claim 1, characterized in that: A feeding pipe (21) is provided at the bottom of the storage box (3), one end of the feeding pipe (21) extends to the input end of the feeding auger (2), and the output end of the feeding auger (2) extends to the inside of the top of the furnace body (1).

4. The drying and roasting integrated furnace according to claim 1, characterized in that: A smoke guide pipe (22) is provided on the top of the heat exchange water tank (4).

5. The drying and roasting integrated furnace according to claim 1, characterized in that: Two water supply pipes are fixedly installed on the top of the heat exchange water tank (4), and two drainage pipes are fixedly installed on both sides of the bottom of the heat exchange water tank (4).

6. The drying and roasting integrated furnace according to claim 3, characterized in that: A control valve is provided inside the discharge pipe (21).

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