A process for recovering waste heat from high-temperature push-plate kiln

Abstract

A process for recovering waste heat from a high-temperature push-plate kiln, using a waste heat recovery device for a high-temperature push-plate kiln, the waste heat recovery device for a high-temperature push-plate kiln comprising an air inlet pipe, one side of the air inlet pipe is connected to a filter mechanism for filtering tail gas, and a first heat recovery pump is arranged at intervals on the other side of the filter mechanism, an insulation box is symmetrically arranged on the other side of the first heat recovery pump, and a second heat recovery pump is arranged on the top of the insulation box. The filtering mechanism arranged inside the device of the present invention facilitates the full filtration of the tail gas discharged by the high-temperature push-plate kiln, and at the same time, the various groups of insulation boxes arranged inside the device are connected through the second heat recovery pump, and the temperature inside each group of insulation boxes can be quickly kept consistent, and the insulation box can be used in conjunction with the spiral tube to heat the solution that needs to be heated in the outside world, so as to achieve the purpose of waste heat recovery.

Description

Technical Field

[0001] The invention relates to the field of high-temperature push-plate kilns, and in particular to a process for recovering waste heat from a high-temperature push-plate kiln. Background Art

[0002] High-temperature push-plate kilns are widely used in the sintering process of ceramics. The ceramics inside the kiln are continuously calcined by high temperature. At this time, the exhaust hole of the high-temperature push-plate kiln will discharge exhaust gas, which contains a large amount of heat. If the exhaust gas is discharged directly, a large amount of heat will be lost, resulting in energy waste. The existing waste heat recovery device has certain disadvantages during use due to its poor connectivity and overly simple treatment of the exhaust gas.

[0003] In view of the fact that there is still a lot of heat in the exhaust gas discharged by the current high-temperature push-plate kiln during use, and the existing waste heat recovery device has a problem that the exhaust gas treatment equipment installed inside is too simple, resulting in a large amount of impurities inside the recovery device, we propose a process for recovering waste heat from the high-temperature push-plate kiln. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a process for recovering waste heat from a high-temperature push-plate kiln, which can solve the problem that there is still a large amount of heat inside the exhaust gas discharged from the current high-temperature push-plate kiln when in use, and the existing waste heat recovery device has a large amount of impurities inside the recovery device due to the overly simple exhaust gas treatment equipment arranged inside it when in use.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A process for recovering waste heat from a high-temperature push-plate kiln adopts a waste heat recovery device for a high-temperature push-plate kiln. The waste heat recovery device for a high-temperature push-plate kiln comprises an air intake pipe, one side of the air intake pipe is connected to a filtering mechanism for filtering exhaust gas, and a first heat recovery pump is arranged at intervals on the other side of the filtering mechanism, an insulation box is symmetrically arranged on the other side of the first heat recovery pump, and a second heat recovery pump is arranged on the top of the insulation box.

[0007] Preferably, a butterfly valve is connected to one side of the filter mechanism away from the air inlet pipe, and the other side of the butterfly valve is connected to the first heat recovery pump pipeline, so as to facilitate the control of the airflow in the pipeline.

[0008] Preferably, the pipeline on one side of the first heat recovery pump away from the butterfly valve is connected to a main pipe, and branch pipes are symmetrically arranged on both sides of the main pipe, and the two groups of branch pipes respectively penetrate the side walls of the two groups of insulation boxes and extend into the interior thereof.

[0009] Preferably, one end of the second heat recovery pump passes through the top of the insulation box and extends into the interior thereof, and the other end of the second heat recovery pump passes through the top of another group of insulation boxes and extends into the interior thereof, so as to facilitate the control of the internal gas flow of each insulation box.

[0010] Preferably, a spiral tube is provided inside the insulated box, and both ends of the spiral tube pass through the side wall of the insulated box and extend to the outside thereof, and temperature sensors are arranged at intervals at the bottom of the spiral tube, and the temperature sensors are fixedly connected to the inner wall of the insulated box.

[0011] Preferably, the filtering mechanism includes a filter box, a particle filter, an activated carbon filter layer, a first sealing ring, an upper slot, a taking slot, a bottom plate, a second sealing ring and a lower slot, and both sides of the filter box are respectively connected to the air intake pipe and the butterfly valve pipeline.

[0012] Preferably, a particle filter screen and an activated carbon filter layer are symmetrically arranged inside the filter box, and a first sealing ring is symmetrically arranged on the top of the particle filter screen and the activated carbon filter layer.

[0013] Preferably, upper slots are symmetrically provided on the top of the filter box, and both sides of the two groups of upper slots are provided with taking slots, and the particle filter and the activated carbon filter layer penetrate the two groups of upper slots and extend to the interior of the filter mechanism.

[0014] Preferably, at least three groups of lower grooves are evenly opened at the bottom of the filter box, and the lower grooves are respectively located on both sides of the particle filter screen and the activated carbon filter layer. A bottom plate is provided at the bottom of the filter box, and a second sealing ring is sleeved on the bottom of the bottom plate. The bottom plate passes through the lower grooves and extends into the interior thereof, and the second sealing ring matches the lower grooves.

[0015] Preferably, the process for recovering waste heat from a high-temperature push-plate kiln comprises the following steps:

[0016] S1: First, connect one side of the air inlet pipe to the exhaust pipe of the high-temperature push plate kiln, and connect the device to the host computer;

[0017] S2: When the high-temperature push-plate kiln is working and exhausting the exhaust gas, the exhaust gas first enters the interior of the filter box through the air intake pipe. At this time, the particulate matter inside the exhaust gas is first blocked and filtered by the particle filter set inside the filter box to prevent the particulate impurities from entering the interior of the first heat recovery pump. After the particle filter is filtered, the exhaust gas is immediately adsorbed by the activated carbon filter layer to purify the exhaust gas.

[0018] S3: At this time, the butterfly valve is opened, and the filtered exhaust gas is transported to the inside of the main pipe arranged on the other side of the first heat recovery pump under the action of the first heat recovery pump, and is transported to the inside of the two groups of insulation boxes through the branch pipes symmetrically arranged on both sides of the main pipe for insulation treatment;

[0019] S4: At this time, the temperature sensors installed inside the two groups of insulation boxes detect the temperature inside the two groups of insulation boxes and feed it back to the host computer for display. At this time, the staff can detect the temperature according to the temperature sensor and observe whether there is a deviation inside the two groups of insulation boxes, so as to determine whether the second heat recovery pump needs to be turned on;

[0020] S5: If the second heat recovery pump is turned on, the two groups of insulation boxes are connected through the second heat recovery pump, so that the temperatures inside the two groups of insulation boxes are kept consistent;

[0021] S6: At the same time, one end of the spiral tube can be connected to an external circulation pump pipeline, and liquid can be transported to the inside of the spiral tube through the external circulation pump. The spiral tube passes through an insulation box, and then the solution inside the spiral tube is heated by the insulation box to complete waste heat recovery;

[0022] S7: When the particle filter and the activated carbon filter layer provided inside the filter box need to be replaced and cleaned, the particle filter and the activated carbon filter layer can be clamped by the taking slot and taken out to complete the replacement and cleaning. After the replacement and cleaning are completed, they can be put back;

[0023] S8: When it is necessary to clean the inside of the filter box, the bottom plate that runs through the bottom of the filter box can be taken out, and the filter box can be cleaned through the lower card slot opened at the bottom of the filter box. After cleaning, the bottom plate can be put back.

[0024] The beneficial effects of the present invention are:

[0025] 1. The particle filter and activated carbon filter layer arranged inside the filter mechanism are convenient for filtering and adsorbing the particles and gases inside the exhaust gas, so as to prevent particulate matter and harmful gases from entering the interior of the device and causing excessive impurities inside the device.

[0026] 2. The upper card slot set on the top of the filter box cooperates with the first sealing ring to facilitate the sealing of the particle filter net and the activated carbon filter layer. At the same time, it cooperates with the taking slot to facilitate the rapid replacement and cleaning of the particle filter net and the activated carbon filter layer. The lower card slot set inside the filter mechanism cooperates with the bottom plate to facilitate the cleaning of the inside of the filter box.

[0027] 3. The spiral tube installed inside the insulation box can cooperate with the external circulating water pump to heat the liquid entering the spiral tube, so as to recover the waste heat. At the same time, each group of insulation boxes is connected through the second heat recovery pump installed on the top, and cooperates with the temperature sensor installed inside the insulation box to facilitate control so that the temperature inside the two groups of insulation boxes remains consistent.

[0028] In summary, the filtering mechanism arranged inside the device of the present invention is convenient for fully filtering the exhaust gas discharged by the high-temperature push-plate kiln. At the same time, the groups of insulation boxes arranged inside the device are connected through the second heat recovery pump, and the temperature inside each group of insulation boxes can be quickly kept consistent. The insulation box and the spiral tube can be used to heat the solution that needs to be heated in the outside world, so as to achieve the purpose of waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the waste heat recovery device of the high-temperature push plate kiln of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the filtering mechanism of the present invention.

[0031] Figure 3 It is a structural cross-sectional view of the filter box of the present invention.

[0032] Figure 4 It is a schematic structural diagram of the particle filter of the present invention.

[0033] Figure 5 It is a structural schematic diagram of the bottom plate of the present invention.

[0034] Figure 6 It is a cross-sectional view of the connection structure of the thermal insulation box of the present invention.

[0035] Numbers in the figure: 1. Air inlet pipe; 2. Filter mechanism; 201. Filter box; 202. Particle filter; 203. Activated carbon filter layer; 204. First sealing ring; 205. Upper card slot; 206. Take-up slot; 207. Bottom plate; 208. Second sealing ring; 209. Lower card slot; 3. Butterfly valve; 4. First heat recovery pump; 5. Main pipe; 6. Branch pipe; 7. Insulation box; 8. Second heat recovery pump; 9. Spiral pipe; 10. Temperature sensor. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Reference Figure 1-Figure 6 As shown, a process for recovering waste heat from a high-temperature push-plate kiln adopts a waste heat recovery device for a high-temperature push-plate kiln, wherein the waste heat recovery device for a high-temperature push-plate kiln comprises an air intake pipe 1, one side of the air intake pipe 1 is connected to a filter mechanism 2 for filtering exhaust gas, and a first heat recovery pump 4 is arranged at intervals on the other side of the filter mechanism 2, an insulation box 7 is symmetrically arranged on the other side of the first heat recovery pump 4, and a second heat recovery pump 8 is arranged on the top of the insulation box 7.

[0038] like Figure 1 , Figure 6 As shown, the filter mechanism 2 is connected to a butterfly valve 3 on one side of the pipeline away from the air inlet pipe 1, and the other side of the butterfly valve 3 is connected to the first heat recovery pump 4 pipeline. The first heat recovery pump 4 is connected to a main pipe 5 on one side of the pipeline away from the butterfly valve 3, and branch pipes 6 are symmetrically arranged on both sides of the main pipe 5, and the two groups of branch pipes 6 respectively penetrate the side walls of the two groups of insulation boxes 7 and extend to the inside thereof. One end of the second heat recovery pump 8 penetrates the top of one group of insulation boxes 7 and extends to the inside thereof, and the other end of the second heat recovery pump 8 penetrates the top of the other group of insulation boxes 7 and extends to the inside thereof. Spiral tubes 9 are arranged inside the two groups of insulation boxes 7, and both ends of the spiral tubes 9 penetrate the side walls of the insulation boxes 7 and extend to the outside thereof. Temperature sensors 10 are arranged at intervals at the bottom of the spiral tubes 9, and the temperature sensors 10 are fixedly connected to the inner wall of the insulation boxes 7; the temperature sensor 10 is convenient for detecting the temperature inside the insulation boxes 7, and the spiral tubes 9 cooperate with the external circulation pump to heat the solution that needs to be heated so as to recover the waste heat.

[0039] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the filter mechanism 2 includes a filter box 201, a particle filter 202, an activated carbon filter layer 203, a first sealing ring 204, an upper card slot 205, a take-up slot 206, a bottom plate 207, a second sealing ring 208 and a lower card slot 209. The two sides of the filter box 201 are respectively connected to the air intake pipe 1 and the butterfly valve 3 pipeline. The particle filter 202 and the activated carbon filter layer 203 are symmetrically arranged inside the filter box 201, and the first sealing ring 204 is symmetrically arranged on the top of the particle filter 202 and the activated carbon filter layer 203. The top of the filter box 201 is symmetrically provided with upper card slots 205, and the two sides of the two groups of upper card slots 205 are provided with take-up slots 206. The particle filter 202 and the activated carbon filter layer 203 penetrate the two groups of upper card slots 205 and extend to the inside of the filter mechanism 2. Three groups of lower slots 209 are evenly arranged at the bottom of the filter box 201, and the three groups of lower slots 209 are respectively located on both sides of the particle filter 202 and the activated carbon filter layer 203. A bottom plate 207 is arranged at the bottom of the filter box 201, and a second sealing ring 208 is sleeved on the bottom of the bottom plate 207. The bottom plate 207 passes through the lower slots 209 and extends into the interior thereof, and the second sealing ring 208 matches the lower slots 209. The particle filter 202 and the activated carbon filter layer 203 arranged inside the filter mechanism 2 facilitate sufficient treatment of the exhaust gas to prevent impurities from entering the interior of the device.

[0040] A process for recovering waste heat from a high-temperature push-plate kiln comprises the following steps:

[0041] S1: First, connect one side of the air inlet pipe 1 to the exhaust pipe of the high-temperature push plate kiln, and connect the device to the host computer;

[0042] S2: When the high-temperature push plate kiln is working and exhausting the exhaust gas, the exhaust gas first enters the interior of the filter box 201 through the air inlet pipe 1. At this time, the particulate matter inside the exhaust gas is first blocked and filtered by the particle filter 202 provided inside the filter box 201 to prevent the particulate impurities from entering the interior of the first heat recovery pump 4. After the particle filter 202 has finished filtering, the exhaust gas is immediately adsorbed by the activated carbon filter layer 203, thereby purifying the exhaust gas;

[0043] S3: At this time, the butterfly valve 3 is opened, and the filtered exhaust gas is transported to the inside of the main pipe 5 arranged on the other side of the first heat recovery pump 4 under the action of the first heat recovery pump 4, and is transported to the inside of the two groups of insulation boxes 7 through the branch pipes 6 symmetrically arranged on both sides of the main pipe 5 for insulation treatment;

[0044] S4: At this time, the temperature sensors 10 arranged inside the two groups of insulation boxes 7 detect the temperature inside the two groups of insulation boxes 7 and feed it back to the host computer for display. At this time, the staff can observe whether there is a deviation inside the two groups of insulation boxes 7 according to the temperature detected by the temperature sensor 10, so as to determine whether it is necessary to start the second heat recovery pump 8;

[0045] S5: If the second heat recovery pump 8 is turned on, the two groups of heat preservation boxes 7 are connected through the second heat recovery pump 8, so that the temperatures inside the two groups of heat preservation boxes 7 are kept consistent;

[0046] S6: At the same time, one end of the spiral tube 9 can be connected to the external circulation pump pipeline, and the liquid can be transported to the inside of the spiral tube 9 through the external circulation pump. The spiral tube 9 passes through the insulation box 7, and then the solution inside the spiral tube 9 is heated by the insulation box 7 to complete the waste heat recovery;

[0047] S7: When the particle filter 202 and the activated carbon filter layer 203 provided inside the filter box 201 need to be replaced and cleaned, the particle filter 202 and the activated carbon filter layer 203 can be clamped by the taking slot 206 and taken out, thereby completing the replacement and cleaning. After the replacement and cleaning are completed, they can be put back;

[0048] S8: When the inside of the filter box 201 needs to be cleaned, the bottom plate 207 penetrating the bottom of the filter box 201 can be taken out, and the filter box 201 can be cleaned through the lower card slot 209 opened at the bottom of the filter box 201. After cleaning, the bottom plate 207 can be put back.

[0049] The beneficial effects of this embodiment are:

[0050] 1. The particle filter and activated carbon filter layer arranged inside the filter mechanism are convenient for filtering and adsorbing the particles and gases inside the exhaust gas, so as to prevent particulate matter and harmful gases from entering the interior of the device and causing excessive impurities inside the device.

[0051] 2. The upper card slot set on the top of the filter box cooperates with the first sealing ring to facilitate the sealing of the particle filter net and the activated carbon filter layer. At the same time, it cooperates with the taking slot to facilitate the rapid replacement and cleaning of the particle filter net and the activated carbon filter layer. The lower card slot set inside the filter mechanism cooperates with the bottom plate to facilitate the cleaning of the inside of the filter box.

[0052] 3. The spiral tube installed inside the insulation box can cooperate with the external circulating water pump to heat the liquid entering the spiral tube, so as to recover the waste heat. At the same time, each group of insulation boxes is connected through the second heat recovery pump installed on the top, and cooperates with the temperature sensor installed inside the insulation box to facilitate control so that the temperature inside the two groups of insulation boxes remains consistent.

[0053] In summary, the filtering mechanism arranged inside the device of the present invention is convenient for fully filtering the exhaust gas discharged by the high-temperature push-plate kiln. At the same time, the groups of insulation boxes arranged inside the device are connected through the second heat recovery pump, and the temperature inside each group of insulation boxes can be quickly kept consistent. The insulation box and the spiral tube can be used to heat the solution that needs to be heated in the outside world, so as to achieve the purpose of waste heat recovery.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A process for recovering waste heat from a high-temperature push-plate kiln, using a waste heat recovery device for a high-temperature push-plate kiln, the waste heat recovery device for a high-temperature push-plate kiln comprising an air inlet pipe (1), characterized in that: A filter mechanism (2) for filtering exhaust gas is connected to one side of the intake pipe (1), and a first heat recovery pump (4) is arranged at intervals on the other side of the filter mechanism (2); an insulation box (7) is symmetrically arranged on the other side of the first heat recovery pump (4), and a second heat recovery pump (8) is arranged on the top of the insulation box (7); A butterfly valve (3) is connected to a pipeline on one side of the filter mechanism (2) away from the air intake pipe (1), and the other side of the butterfly valve (3) is connected to a pipeline of a first heat recovery pump (4); The pipeline on one side of the first heat recovery pump (4) away from the butterfly valve (3) is connected to a main pipe (5), and branch pipes (6) are symmetrically arranged on both sides of the main pipe (5), and the two groups of branch pipes (6) respectively penetrate the side walls of the two groups of insulation boxes (7) and extend into the interior thereof; One end of the second heat recovery pump (8) passes through the top of the insulation box (7) and extends into the interior thereof, and the other end of the second heat recovery pump (8) passes through the top of another group of insulation boxes and extends into the interior thereof; A spiral tube (9) is provided inside the heat preservation box (7), and both ends of the spiral tube (9) penetrate the side wall of the heat preservation box (7) and extend to the outside thereof; a temperature sensor (10) is provided at intervals at the bottom of the spiral tube (9), and the temperature sensor (10) is fixedly connected to the inner wall of the heat preservation box (7); The filtering mechanism (2) comprises a filtering box (201), a particle filtering screen (202), an activated carbon filtering layer (203), a first sealing ring (204), an upper clamping groove (205), a taking groove (206), a bottom plate (207), a second sealing ring (208) and a lower clamping groove (209); the two sides of the filtering box (201) are respectively connected to the air intake pipe (1) and the butterfly valve (3) pipeline.

2. The process for recovering waste heat from a high-temperature push plate kiln according to claim 1, characterized in that: A particle filter screen (202) and an activated carbon filter layer (203) are symmetrically arranged inside the filter box (201), and a first sealing ring (204) is symmetrically arranged on the top of each of the particle filter screen (202) and the activated carbon filter layer (203).

3. The process for recovering waste heat from a high temperature push plate kiln according to claim 2, characterized in that: The top of the filter box (201) is symmetrically provided with upper slots (205), and both sides of the upper slots (205) are provided with taking slots (206). The particle filter screen (202) and the activated carbon filter layer (203) penetrate the two groups of upper slots (205) and extend to the interior of the filter mechanism (2).

4. The process for recovering waste heat from a high-temperature pusher kiln according to claim 2, characterized in that: At least three groups of lower slots (209) are evenly arranged at the bottom of the filter box (201), and the lower slots (209) are respectively located on both sides of the particle filter screen (202) and the activated carbon filter layer (203). A bottom plate (207) is arranged at the bottom of the filter box (201), and a second sealing ring (208) is sleeved at the bottom of the bottom plate (207). The bottom plate (207) passes through the lower slots (209) and extends into the interior thereof, and the second sealing ring (208) matches the lower slots (209).

5. The process for recovering waste heat from a high-temperature push plate kiln according to any one of claims 1 to 4, characterized in that: The steps include: S1: First, connect one side of the air inlet pipe (1) to the exhaust pipe of the high-temperature push plate kiln, and connect the device to the host computer; S2: When the high-temperature push-plate kiln is working and exhausting exhaust gas, the exhaust gas first enters the interior of the filter box (201) through the air intake pipe (1). At this time, the particle filter (202) provided inside the filter box (201) blocks and filters the particulate matter inside the exhaust gas to prevent the particulate impurities from entering the interior of the first heat recovery pump (4). After the particle filter (202) has finished filtering, the exhaust gas is immediately adsorbed by the activated carbon filter layer (203), thereby purifying the exhaust gas; S3: At this time, the butterfly valve (3) is opened, and the filtered exhaust gas is transported to the inside of the main pipe (5) arranged on the other side of the first heat recovery pump (4) under the action of the first heat recovery pump (4), and is transported to the inside of the two groups of insulation boxes (7) through the branch pipes (6) symmetrically arranged on both sides of the main pipe (5) for insulation treatment; S4: At this time, the temperature sensors (10) provided inside the two sets of heat preservation boxes (7) detect the temperatures inside the two sets of heat preservation boxes (7) and feed back the temperatures to the host computer for display. At this time, the staff can observe whether there is a deviation inside the two sets of heat preservation boxes (7) based on the temperatures detected by the temperature sensors (10), thereby determining whether it is necessary to start the second heat recovery pump (8); S5: if the second heat recovery pump (8) is turned on, the two sets of heat preservation boxes (7) are connected via the second heat recovery pump (8), so that the temperatures inside the two sets of heat preservation boxes (7) remain consistent; S6: At the same time, one end of the spiral tube (9) can be connected to an external circulation pump pipeline, and liquid can be transported to the interior of the spiral tube (9) through the external circulation pump. The spiral tube (9) passes through the heat preservation box (7), and the solution inside the spiral tube (9) is heated by the heat preservation box (7) to complete waste heat recovery; S7: When it is necessary to replace or clean the particle filter (202) and the activated carbon filter layer (203) disposed inside the filter box (201), the particle filter (202) and the activated carbon filter layer (203) can be clamped by the taking slot (206) and taken out, thereby completing the replacement and cleaning. After the replacement and cleaning are completed, they can be put back; S8: When it is necessary to clean the interior of the filter box (201), the bottom plate (207) penetrating the bottom of the filter box (201) can be removed, and the filter box (201) can be cleaned through the lower slot (209) provided at the bottom of the filter box (201). After cleaning, the bottom plate (207) can be put back.

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