CN117109335A - Raw coke oven gas waste heat utilization equipment - Google Patents
Raw coke oven gas waste heat utilization equipment Download PDFInfo
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- CN117109335A CN117109335A CN202311359364.4A CN202311359364A CN117109335A CN 117109335 A CN117109335 A CN 117109335A CN 202311359364 A CN202311359364 A CN 202311359364A CN 117109335 A CN117109335 A CN 117109335A
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- spiral
- pipe
- raw gas
- cavity
- heat exchange
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- 239000007789 gas Substances 0.000 title claims abstract description 96
- 239000000571 coke Substances 0.000 title claims abstract description 35
- 239000002918 waste heat Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000011084 recovery Methods 0.000 claims abstract description 33
- 238000005192 partition Methods 0.000 claims abstract description 30
- 239000012535 impurity Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- -1 and in the process Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application relates to the technical field of environmental protection, and discloses a coke oven raw gas waste heat utilization device which comprises a recovery tank, wherein two symmetrical partition layers are sleeved in an inner cavity of the recovery tank, the two partition layers divide the inner cavity of the recovery tank into a converging cavity I, a processing cavity and a converging cavity II, uniformly distributed heat exchange pipes are sleeved in the processing cavity, each heat exchange pipe consists of uniformly distributed spiral pipes, and each spiral pipe is divided into a spiral thick pipe and a spiral thin pipe. According to the application, the contact area of the raw gas in the spiral fine tube with external cold water is smaller than that of the raw gas in the spiral coarse tube, so that the heat exchanged between the raw gas in the spiral fine tube and the external is less in the same section, the heat exchanged between the raw gas in the spiral coarse tube and the external is more, the raw gas pressure in the spiral fine tube is higher than that of the raw gas in the spiral coarse tube in a short time, the raw gas in the spiral fine tube and the raw gas in the spiral coarse tube are quickly mixed, and the turbulence degree is improved.
Description
Technical Field
The application relates to the technical field of environmental protection, in particular to a coke oven raw gas waste heat utilization device.
Background
The coke oven is a device for firing coal by using coal, and in the process, dust-containing combustible gas, namely raw coke oven gas, is generated, the raw coke oven gas cannot be directly supplied to a user, secondary processing is required to be carried out on the raw coke oven gas, and before secondary processing, the raw coke oven gas generated in the coke oven has higher heat (generally higher than 800 degrees), so that the heat recovery is carried out by using a gas waste heat exchanger in industry, and the energy utilization rate is improved.
One of the tube-plate heat exchangers is characterized in that cylindrical heat exchange tubes are uniformly distributed in a large cylindrical heat exchanger, flowing cold water (cold air) is introduced into the heat exchange tubes, high-temperature raw gas is input into the heat exchanger, when the high-temperature raw gas passes through the heat exchange tubes, heat exchange is carried out between the heat exchange tubes and the cold water, so that the cold water is heated, the heated cold water is discharged out of the heat exchanger and then is used for other devices, and the temperature of the raw gas discharged out of the heat exchanger is reduced.
In the process, the raw gas only has the power of the input heat exchanger and the output heat exchanger, so that the flowing speed of the raw gas in the heat exchanger is unchanged, and the heat exchange tubes are uniformly distributed in the heat exchanger, so that the turbulence degree of the raw gas in flowing is low, the raw gas close to the heat exchange tubes can directly exchange heat with the heat exchange tubes, the raw gas far away from the heat exchange tubes can only be mixed with the raw gas with reduced temperature after the temperature of the raw gas close to the heat exchange tubes is reduced, and then is contacted with the heat exchange tubes after being mixed, thereby achieving the heat exchange effect, and the mixing effect of the raw gas close to the heat exchange tubes and the raw gas with small temperature reduction is poor in the time period from the raw gas input to the output heat exchanger, so that the heat exchanged by the whole heat exchange tubes is small.
Disclosure of Invention
The application provides a coke oven raw gas waste heat utilization device, which has the advantages that pressure difference is generated by different heat exchange efficiencies of all areas in a heat exchange tube, turbulence degree is improved by raw gas in the heat exchange tube under the pressure difference, water is impacted on uneven parts on the outer side of the heat exchange tube, the turbulence degree of surrounding water is increased by diffused water, the water flow direction is intermittently changed, the heat exchange tube is enabled to reciprocate by water flow impact, friction balls I and II in the heat exchange tube roll back and forth, and the rolling friction balls I and II scrape impurities adhered in the heat exchange tube, so that the problems that the heat exchange effect of the conventional heat exchanger is poor and the heat exchange efficiency is reduced due to the fact that the impurities are adhered on the heat exchange tube are solved.
In order to achieve the above purpose, the application adopts the following technical scheme: the utility model provides a coke oven raw gas waste heat utilization equipment, includes the recovery jar, cup jointed two symmetrical separation layers in the inner chamber of recovery jar, two the separation layers divide the inner chamber of recovery jar into and assemble chamber I, processing chamber and assemble chamber II for provide the space that raw gas and water flowed; the processing cavity is internally sleeved with uniformly distributed heat exchange tubes, each heat exchange tube consists of uniformly distributed spiral tubes, two ends of each spiral tube are connected with symmetrical flanges for connecting adjacent spiral tubes to form heat exchange tubes, and the flanges are provided with communication holes for conveying raw gas in the adjacent spiral tubes; the spiral pipe is divided into a spiral thick pipe and a spiral thin pipe, the spiral thin pipe is wound on the spiral thick pipe, the section diameter value of the spiral thick pipe is larger than that of the spiral thin pipe and is used for forming regional pressure difference in the spiral pipe, and inner cavities of the spiral thin pipe and the spiral thick pipe are communicated with each other to form a flow cavity for providing a flow space of raw gas; the projections of the spiral thick pipe and the spiral thin pipe are wavy, and the wavy formed by one wave crest and one half of the wave troughs on two sides of the wave crest are used for changing the flowing state of raw gas in the heat pipe and water around the heat exchange pipe.
Preferably, the processing cavity is located between the converging cavity I and the converging cavity II, the recycling tank is connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the converging cavity I, and the air outlet pipe is communicated with the converging cavity II and used for inputting high-temperature raw gas and outputting low-temperature raw gas after heat exchange.
Preferably, two straight pipes which are uniformly distributed are sleeved on the isolating layers, one end of each straight pipe penetrates through the isolating layer and is connected with one end, close to the isolating layer, of the flange plate, opposite to the isolating layer, and the straight pipes are used for inputting high-temperature raw gas in the converging cavity I into the heat exchange tube and inputting cooled raw gas in the heat exchange tube into the converging cavity II.
Preferably, the bottom of recovery jar is connected with inlet tube I and inlet tube II, the top of recovery jar is connected with outlet pipe I and outlet pipe II, inlet tube I, inlet tube II, outlet pipe I and outlet pipe II all with the processing chamber switch-on for to the processing intracavity input cold water and with the water discharge of processing intracavity internal heating.
Preferably, the water inlet pipe II and the water outlet pipe I are close to the converging cavity I, the water inlet pipe I and the water outlet pipe II are close to the converging cavity II and are used for prolonging the flowing time of water in the processing cavity, and electromagnetic valves are arranged in the water inlet pipe I, the water inlet pipe II, the water outlet pipe I and the water outlet pipe II and are used for changing the water flow direction in the processing cavity.
Preferably, a friction ball I is arranged in the inner cavity of the spiral thin pipe, a friction ball II is arranged in the inner cavity of the spiral thick pipe, and the surfaces of the friction ball I and the friction ball II are uneven and are used for scraping impurities on the inner wall of the flowing cavity.
Preferably, a partition plate is sleeved in the communication hole, and uniformly distributed holes are formed in the partition plate and used for limiting the rolling range of the friction ball I and the friction ball II.
Preferably, the partition layer is movably sleeved in the inner cavity of the recovery tank, symmetrical motors are arranged at two ends of the recovery tank, a transmission rod is connected to the output end of the motor, one end of the transmission rod penetrates through the recovery tank and is fixedly connected with the partition layer to the center of one end of the motor, and the partition layer is used for driving the partition layer and the heat exchange tube to rotate at a low speed.
The application has the following beneficial effects:
according to the waste heat utilization equipment for the raw coke oven gas, the heat exchange tube is arranged into the shape that the spiral raw coke tube and the spiral thin tube are mutually wound, so that when the raw coke gas flows in the flow cavity in the heat exchange tube, the contact area of the raw coke gas in the spiral thin tube with external cold water is smaller than the contact area of the raw coke gas in the spiral raw coke tube with external cold water, the heat exchanged between the raw coke gas in the spiral thin tube and the external is small, the heat exchanged between the raw coke gas in the spiral thin tube and the external is large, the gas pressure of the raw coke gas in the spiral thin tube is higher than the gas pressure of the raw coke gas in the spiral thin tube in a short time, and the gas pressure difference is large, so that the raw coke gas in the spiral thin tube and the raw coke gas in the spiral thin tube are quickly mixed, the turbulence degree is improved, and the heat exchange efficiency is improved.
Meanwhile, when cold water in the processing cavity flows through the heat exchange tube, the outside of the heat exchange tube is in a shape that the spiral thick tube and the spiral thin tube are mutually wound, so that the cold water is impacted on the uneven part (comprising the flange plate) outside the heat exchange tube, the cold water flows forwards and is diffused to the periphery, the mixing degree of the cold water around is increased, the turbulence degree of the cold water is improved, and the heat exchange efficiency is improved.
Meanwhile, the heat exchange tube is impacted by cold water, so that the heat exchange tube moves forward in the flowing direction of the cold water, and the flowing direction of the cold water is changed intermittently, so that the heat exchange tube performs intermittent back and forth reciprocating motion, a friction ball II in the spiral thick tube and a friction ball I in the spiral thin tube roll back and forth in the back and forth motion of the heat exchange tube, so that the friction ball I and the friction ball II with rough surfaces scrape impurities adhered to the inner wall of the heat exchange tube, part of the impurities are separated from the inner wall of the flowing cavity, float in the flowing cavity again and are taken away by flowing raw gas, the speed of adhering the impurities of the heat exchange tube is slowed down, the heat exchange efficiency of the heat exchange tube is improved, and the time interval for cleaning the heat exchange tube is prolonged.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
The application may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of the present application in a three-dimensional shape;
FIG. 2 is a schematic diagram showing the internal structure distribution of the recovery tank according to the present application;
FIG. 3 is a schematic view of a heat exchange tube according to the present application;
FIG. 4 is a schematic view of the coil structure of the present application;
FIG. 5 is a schematic view of the flow chamber structure of the present application;
FIG. 6 is a schematic view showing the structural positions of a friction ball I and a friction ball II according to the present application;
fig. 7 is a schematic diagram of a three-structure distribution of an embodiment of the present application.
Reference numerals:
1. a recovery tank; 2. a processing chamber; 3. a barrier layer; 4. a converging cavity I; 5. a converging cavity II; 6. an air inlet pipe; 601. an air outlet pipe; 7. a water inlet pipe I; 701. a water outlet pipe I; 8. a water inlet pipe II; 801. a water outlet pipe II; 9. a spiral thick pipe; 10. a spiral tubule; 11. a flow chamber; 12. a flange plate; 13. a partition plate; 14. friction ball I; 15. friction ball II; 16. a straight pipe; 17. a motor; 18. a transmission rod.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1: referring to fig. 1 to 2, a coke oven raw gas waste heat utilization device comprises a recovery tank 1, wherein two symmetrical partition layers 3 are sleeved in an inner cavity of the recovery tank 1, the inner cavity of the recovery tank 1 is divided into a converging cavity I4, a processing cavity 2 and a converging cavity II 5 by the two partition layers 3, and the processing cavity 2 is located between the converging cavity I4 and the converging cavity II 5.
Referring to fig. 1 to 2, an air inlet pipe 6 and an air outlet pipe 601 are fixedly connected to a recovery tank 1, the air inlet pipe 6 is communicated with a converging cavity I4, the air outlet pipe 601 is communicated with a converging cavity II 5, high-temperature raw gas enters the converging cavity I4 through the air inlet pipe 6, then is transmitted to a heat exchange pipe through a straight pipe 16 positioned in the converging cavity I4, after the heat exchange pipe exchanges heat with cold water in a processing cavity 2, cooled raw gas is input into the converging cavity II 5 through the straight pipe 16 communicated with the converging cavity II 5, then cooled raw gas is discharged through the air outlet pipe 601, a water inlet pipe I7 and a water inlet pipe II 8 are fixedly connected to the bottom of the recovery tank 1, a water outlet pipe I701 and a water outlet pipe II 801 are fixedly connected to the top of the recovery tank 1, the water inlet pipe I7, the water inlet pipe II 8, the water outlet pipe I701 and the water outlet pipe II 801 are communicated with the processing cavity 2, the water inlet pipe II 8 and the water outlet pipe I701 are close to the converging cavity I4, the water inlet pipe I7 and the water outlet pipe II 801 are close to the converging cavity II 5, electromagnetic valves are arranged in the water inlet pipe I7, the water inlet pipe II 8, the water outlet pipe I701 and the water outlet pipe II 801, so that cold water can be input into the processing cavity 2 through the water inlet pipe I7, the water inlet pipe II 8 and the water outlet pipe II 801 are in a closed state at the moment, the cold water in the processing cavity 2 flows from the water inlet pipe I7 to the water outlet pipe I701, then after a set time (the specific time is set according to actual conditions and is controlled by adopting the prior intelligent control), the water inlet pipe I7 and the water outlet pipe I701 are closed, the water inlet pipe II 8 and the water outlet pipe II 801 are opened, the cold water in the processing cavity flows from the water inlet pipe II 8 to the water outlet pipe II 801, thereby the cold water flowing direction in the processing cavity 2 is changed in an intermittent manner, the water in the processing cavity 2 is changed in an intermittent manner, the water flowing in one direction and the water flowing in the other direction are impacted, the turbulence degree of the water is improved, the mixing effect of cold water and hot water is improved, the time that the water in the processing cavity 2 remains in the processing cavity 2 at the moment is prolonged, and therefore the heat exchange efficiency of the water and the heat exchange tube is improved.
Referring to fig. 2 to 5, the processing chamber 2 is internally sleeved with uniformly distributed heat exchange tubes, the heat exchange tubes are composed of spiral tubes uniformly distributed on the same straight line, two ends of each spiral tube are fixedly connected with symmetrical flange plates 12, adjacent spiral tubes on the heat exchange tubes are fixedly connected through the bolt connecting flange plates 12, when the heat exchange tubes need to be cleaned, the long heat exchange tubes can be disassembled into a plurality of short spiral tubes through disassembling bolts, so that impurities adhered in the flow chamber 11 are conveniently cleaned, the spiral tubes are divided into a spiral thick tube 9 and a spiral thin tube 10, the diameter value of the section of the spiral thick tube 9 is larger than that of the spiral thin tube 10, the spiral thin tube 10 is wound on the spiral thick tube 9, the inner cavities of the spiral thin tube 10 and the spiral thick tube 9 are mutually communicated to form a flow chamber 11, and when raw gas flows in the flow chamber 11 in the heat exchange tubes, the contact area of the raw gas in the spiral thin tube 10 with external cold water is smaller than that of the raw gas in the spiral thick tube 9 with external cold water, so that in the same section, the heat exchanged between the raw gas in the spiral thin tube 10 and the external is small, the heat exchanged between the raw gas in the spiral thick tube 9 and the external is large, the raw gas pressure in the spiral thin tube 10 is higher than that of the raw gas in the spiral thick tube 9 in a short time, the gas pressure difference is large, the raw gas in the spiral thin tube 10 and the raw gas in the spiral thick tube 9 are quickly mixed, the turbulence degree is improved, the heat exchange efficiency is improved, the communicating holes communicated with the flow cavity 11 are formed on the flange 12, the normal flow of the raw gas is not hindered by the flange 12, the projections of the spiral thick tube 9 and the spiral thin tube 10 are wavy, the formed wavy is composed of a crest and half of the troughs on two sides of the crest, the heat exchange tube is arranged into a shape that the spiral thick tube and the spiral thin tube are mutually wound, the turbulence degree of the raw gas is improved, meanwhile, cold water is impacted on the uneven part outside the heat exchange tube, so that the cold water flows forwards and is diffused to the periphery, the mixing degree of the water around is increased, the turbulence degree of the cold water is improved, and the heat exchange efficiency is improved.
Referring to fig. 2 to 5, a straight pipe 16 is fixedly connected to one end, close to the separation layer 3, of the flange plate 12 of the spiral pipe, close to the separation layer 3, one end, close to the straight pipe 16 of the converging cavity i 4, penetrates through the separation layer 3, close to the converging cavity i 4, into the converging cavity i 4, one end, close to the straight pipe 16 of the converging cavity ii 5, penetrates through the separation layer 3, close to the converging cavity ii 5, into the converging cavity ii 5, so that raw gas is input into the heat exchange tube through the straight pipe 16 communicated with the converging cavity i 4, and then is output out of the heat exchange tube through the straight pipe 16 communicated with the converging cavity ii 5.
Example 2: referring to fig. 6, on the basis of the first embodiment, a friction ball i 14 is disposed in the inner cavity of the spiral thin tube 10, a friction ball ii 15 is disposed in the inner cavity of the spiral thick tube 9, the surfaces of the friction ball i 14 and the friction ball ii 15 are uneven, when the heat exchange tube is impacted by cold water, the heat exchange tube will move forward in the direction of the cold water flow, and the heat exchange tube will intermittently reciprocate back and forth due to intermittent change of the cold water flow direction, so that the friction ball ii 15 in the spiral thick tube 9 and the friction ball i 14 in the spiral thin tube 10 roll back and forth in the back and forth movement of the heat exchange tube, thereby the friction ball i 14 and the friction ball ii 15 with rough surfaces scrape impurities adhered on the inner wall of the flow chamber 11, so that part of impurities are separated from the inner wall of the flow chamber 11 and float in the flow chamber again, the raw gas is taken away by flowing raw gas, so that the speed of adhering impurities to the heat exchange tube is slowed down, the heat exchange efficiency of the heat exchange tube is improved, the time interval for cleaning the heat exchange tube is prolonged, the diameter value of the friction ball I14 is smaller than the diameter value of the inner cavity section of the spiral thin pipe 10, the diameter value of the friction ball II 15 is smaller than the diameter value of the inner cavity section of the spiral thick pipe 9, the raw gas cannot be blocked from flowing forwards when the friction ball I14 and the friction ball II 15 roll, the raw gas can diffuse when contacting the friction ball I14 and the friction ball II 15, but still flows forwards, the diameter values of the friction ball I14 and the friction ball II 15 are larger than the width value of the inner cavity communicating parts of the spiral thin pipe 9 and the spiral thin pipe 10, the friction ball I14 only rolls in the spiral thin pipe 10, and the friction ball II only rolls in the spiral thick pipe 9.
Referring to fig. 4, the communicating hole formed on the flange 12 is fixedly sleeved with the isolation plate 13, so that the friction balls i 14 and ii 15 are limited by the isolation plate 13 and cannot separate from the spiral pipe when rolling, holes uniformly distributed in the isolation plate 13 are formed, the isolation plate 13 cannot obstruct normal flow of raw gas, the wavelength distance is long in projected waves of the spiral thick pipe 9 and the spiral thin pipe 10, the wave height is short, when the friction balls i 14 and ii 15 roll back and forth, due to the fact that the wave height is short, resistance received by the friction balls i 14 and ii 15 when rolling from the trough to the crest is reduced, the problem that the friction balls i 14 and ii 15 cannot roll from the trough to the crest is avoided, a space exists between the flange 12 and the partition layer 3, enough space is provided for back and forth movement of the heat exchange pipe, the straight pipe 16 is movably sleeved on the partition layer 3, movable sealing treatment is performed between the straight pipe 16 and the partition layer 3, the straight pipe 16 can move along with the heat exchange pipe synchronously, and the problem that the straight pipe 16 converges with the water in the processing cavity i 4 and the processing cavity ii 5 when moving is avoided.
Example 3: referring to fig. 7, on the basis of the second embodiment, two ends of the recovery tank 1 are fixedly connected with symmetrical motors 17, the output ends of the motors 17 are fixedly connected with transmission rods 18, one ends of the transmission rods 18 penetrate through the recovery tank 1 and the partition layer 3 to be opposite to the center of one end of the motors 17, the transmission rods 18 and the recovery tank 1 are movably sealed, the partition layer 3 is movably sleeved in the inner cavity of the recovery tank 1, the partition layer 3 and the inner cavity of the recovery tank 1 are movably sealed, the motors can drive the partition layer 3 to continuously rotate at a low speed, the partition layer 3 drives the heat exchange tubes to continuously rotate at a low speed in the processing cavity 2 through straight tubes 16, water in the processing cavity 2 is stirred by the heat exchange tubes to improve heat exchange effects, through the rotation of heat exchange tube for the crest of spiral pipe originally changes into the trough gradually, and the trough changes into the crest gradually, thereby makes friction ball I14 and friction ball II 15 that are in the trough originally, is in the crest gradually, makes friction ball I14 and friction ball II 15 carry out multidirectional rolling under the position transition, strikes off the impurity that adheres on the inner wall of flow chamber 11, improves friction ball I14 and friction ball II 15 contact flow chamber 11 inner wall's area, improves the efficiency of scraping impurity, and the multidirectional rolling of friction ball I14 and friction ball II 15 makes the raw coke oven gas stirring in the flow chamber 11, thereby improves the turbulence degree of raw coke oven gas in the flow chamber 11, improves heat transfer efficiency.
Claims (8)
1. The coke oven raw gas waste heat utilization equipment is characterized by comprising a recovery tank (1), wherein two symmetrical partition layers (3) are sleeved in the inner cavity of the recovery tank (1), and the inner cavity of the recovery tank (1) is divided into a converging cavity I (4), a processing cavity (2) and a converging cavity II (5) by the two partition layers (3) to provide a space for flowing raw gas and water;
the processing cavity (2) is internally sleeved with uniformly distributed heat exchange pipes, each heat exchange pipe consists of uniformly distributed spiral pipes, two ends of each spiral pipe are connected with symmetrical flange plates (12) for connecting adjacent spiral pipes to form the heat exchange pipes, and the flange plates (12) are provided with communication holes for conveying raw gas in the adjacent spiral pipes;
the spiral pipe is divided into a spiral thick pipe (9) and a spiral thin pipe (10), the spiral thin pipe (10) is wound on the spiral thick pipe (9), the section diameter value of the spiral thick pipe (9) is larger than that of the spiral thin pipe (10) and is used for forming regional pressure difference in the spiral pipe, and the inner cavities of the spiral thin pipe (10) and the spiral thick pipe (9) are communicated with each other to form a flow cavity (11) for providing a flow space of raw gas;
the projections of the spiral thick pipe (9) and the spiral thin pipe (10) are wavy, and the wavy formed by a wave crest and half of wave troughs on two sides of the wave crest are used for changing the flowing state of raw gas in the heat pipe and water around the heat exchange pipe.
2. The coke oven raw gas waste heat utilization device according to claim 1, wherein the processing cavity (2) is located between the converging cavity (4) and the converging cavity (5), the recycling tank (1) is connected with an air inlet pipe (6) and an air outlet pipe (601), the air inlet pipe (6) is communicated with the converging cavity (4), and the air outlet pipe (601) is communicated with the converging cavity (5) and is used for inputting high-temperature raw gas and outputting low-temperature raw gas subjected to heat exchange.
3. The coke oven raw gas waste heat utilization device according to claim 2, wherein two straight pipes (16) uniformly distributed are sleeved on each partition layer (3), one end of each straight pipe (16) penetrates through each partition layer (3) and is connected with one end, opposite to each partition layer (3), of a flange plate (12) close to each partition layer (3), and the straight pipes are used for inputting high-temperature raw gas in the converging cavity I (4) into the heat exchange tube and cooling raw gas in the heat exchange tube into the converging cavity II (5).
4. The coke oven raw gas waste heat utilization device according to claim 1, wherein the bottom of the recovery tank (1) is connected with a water inlet pipe I (7) and a water inlet pipe II (8), the top of the recovery tank (1) is connected with a water outlet pipe I (701) and a water outlet pipe II (801), and the water inlet pipe I (7), the water inlet pipe II (8), the water outlet pipe I (701) and the water outlet pipe II (801) are communicated with the processing cavity (2) and are used for inputting cold water into the processing cavity (2) and discharging water heated in the processing cavity (2).
5. The coke oven raw gas waste heat utilization device according to claim 4, wherein the water inlet pipe II (8) and the water outlet pipe I (701) are close to the converging cavity I (4), the water inlet pipe I (7) and the water outlet pipe II (801) are close to the converging cavity II (5) and are used for prolonging the flowing time of water in the processing cavity (2), and electromagnetic valves are arranged in the water inlet pipe I (7), the water inlet pipe II (8), the water outlet pipe I (701) and the water outlet pipe II (801) and are used for changing the water flow direction in the processing cavity (2).
6. The coke oven raw gas waste heat utilization equipment according to claim 1, wherein a friction ball I (14) is arranged in the inner cavity of the spiral thin tube (10), a friction ball II (15) is arranged in the inner cavity of the spiral thick tube (9), and the surfaces of the friction ball I (14) and the friction ball II (15) are uneven and are used for scraping impurities on the inner wall of the flow cavity (11).
7. The coke oven raw gas waste heat utilization device according to claim 6, wherein a partition plate (13) is sleeved in the communication hole, and uniformly distributed holes are formed in the partition plate (13) and used for limiting the rolling range of the friction balls I (14) and the friction balls II (15).
8. The coke oven raw gas waste heat utilization equipment according to claim 1, wherein the partition layer (3) is movably sleeved in an inner cavity of the recovery tank (1), two ends of the recovery tank (1) are provided with symmetrical motors (17), the output ends of the motors (17) are connected with transmission rods (18), one ends of the transmission rods (18) penetrate through the recovery tank (1) and are fixedly connected with the partition layer (3) opposite to the center of one end of the motor (17) for driving the partition layer (3) and the heat exchange tube to rotate at a low speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359364.4A CN117109335B (en) | 2023-10-20 | 2023-10-20 | Raw coke oven gas waste heat utilization equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359364.4A CN117109335B (en) | 2023-10-20 | 2023-10-20 | Raw coke oven gas waste heat utilization equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117109335A true CN117109335A (en) | 2023-11-24 |
| CN117109335B CN117109335B (en) | 2024-01-02 |
Family
ID=88795027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311359364.4A Active CN117109335B (en) | 2023-10-20 | 2023-10-20 | Raw coke oven gas waste heat utilization equipment |
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|---|---|
| CN117109335B (en) | 2024-01-02 |
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