CN210374667U - Multistage cooling waste heat recovery utilizes system - Google Patents
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- CN210374667U CN210374667U CN201921042266.7U CN201921042266U CN210374667U CN 210374667 U CN210374667 U CN 210374667U CN 201921042266 U CN201921042266 U CN 201921042266U CN 210374667 U CN210374667 U CN 210374667U
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Abstract
The utility model relates to a multistage cooling waste heat recycling system, which relates to the technical field of semi coke dry quenching, in particular to a multistage cooling waste heat recycling system, comprising a multistage cooling device connected between a coke outlet of a vertical furnace and a coke pushing system, wherein the multistage cooling device comprises a primary cooling device, a secondary cooling device and a tertiary cooling device which are connected in sequence; the utility model discloses utilize continuous one-level cooling device, second grade cooling device and tertiary cooling device cool off blue charcoal, one-level cooling device is through first cooling tube, second cooling tube and third cooling tube realize the cooling to blue charcoal, through the control cooling tube pipe diameter, make from top to bottom, water velocity reduces gradually, because the blue charcoal temperature that first cooling tube contacted is higher, intraductal water is vaporized the volume many, the increase rivers can improve heat recovery efficiency, effectively reduce blue charcoal temperature, second cooling tube and third cooling tube, can make intraductal steam output, reduce steam dwell time intraductal as early as possible.
Description
Technical Field
The utility model relates to a blue charcoal dry process quenching technical field, concretely relates to multistage cooling waste heat recovery utilizes system.
Background
In the blue charcoal industry of China at present, the vertical pyrolysis furnace is mainly adopted, the blue charcoal quenching technology adopts wet quenching (water coke removal) for many years, the process technology falls behind, certain environmental pollution is caused, and the blue charcoal quenching technology mainly has the following defects: the wet quenching has the problems of large water consumption (water is directly used for quenching coke, and the purpose of quenching coke can be achieved only by using large amount of water), waste heat waste (a large amount of steam generated by water coking is directly discharged into the atmosphere to take away a large amount of heat), influence on semicoke quality (semicoke quality is influenced because the semicoke is rapidly cooled after high temperature meets water, the semicoke has more reticular cracks, and the semicoke quality is influenced), generation of a large amount of harmful substances (harmful substances such as phenol, cyanide and the like are generated by contact of high-temperature semicoke and water), and the like.
In order to realize that the blue charcoal of red-hot in the upright stove has better cooling effect, reach water conservation and consumption reduction, improve energy utilization, the purpose of pollution abatement, the utility model discloses reform transform the upgrading to current wet process technique to reach the effect of dry process quenching, can reduce water resource consumption, the utilization of recoverable blue charcoal waste heat simultaneously has guaranteed the stability of quality of blue charcoal, and more importantly has stopped the production of poisonous and harmful substance, and then has reached energy-conserving benefit, and environmental social and economic benefits will be more obvious.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a multistage cooling waste heat recovery utilizes system through multistage cooling heat transfer, finally falls blue charcoal temperature to certain extent, make full use of blue charcoal waste heat, improved heat utilization efficiency, reduced the pollutant, have important meaning to the quality promotion of blue charcoal.
The utility model relates to a multistage cooling waste heat recovery utilizes system, including the multistage cooling device who connects between the vertical furnace coke discharging port and the coke pushing system, multistage cooling device includes consecutive one-level cooling device, second grade cooling device and tertiary cooling device, all be provided with the cooling channel that supplies the material circulation on one-level cooling device and second grade cooling device and the tertiary cooling device, be first cooling channel, second cooling channel and third cooling channel respectively, the cooling channel all sets up vertically, and first cooling channel, second cooling channel and third cooling channel communicate in proper order after one end of first cooling channel links to each other with the coke discharging port, and one end of third cooling channel links to each other with the coke pushing system;
the primary cooling device comprises a first cooling pipe, a second cooling pipe and a third cooling pipe, wherein the first cooling pipe, the second cooling pipe and the third cooling pipe are spirally wound along the vertical direction to form hollow channels which are respectively a first channel, a second channel and a third channel, the first channel, the second channel and the third channel are sequentially communicated with one another to form a first cooling channel, and the first channel is communicated with a coke outlet of the vertical furnace;
one end of the first cooling pipe close to the vertical furnace is a first water vapor outlet, and the other end of the first cooling pipe is a first water inlet; one end of the second cooling device, which is close to the first cooling pipe, is a second water vapor outlet, and the other end of the second cooling pipe is a second water inlet; one end of the third cooling pipe close to the second cooling pipe is a third water vapor outlet, and the other end of the third cooling pipe is a third water inlet;
the first cooling pipe and the second cooling pipe as well as the second cooling pipe and the third cooling pipe are connected through connecting plates;
after the same cooling pipe is spirally wound, the cooling pipes between adjacent layers are connected through a fixing plate to form a first channel, a second channel and a third channel which are circumferentially sealed.
Preferably, the cross sections of the first channel, the second channel and the third channel are all rectangular.
Preferably, the longitudinal sections of the first channel and the third channel are both trapezoidal, and the cross-sectional area of one end of the first channel, which is connected with the coke outlet of the vertical furnace, is smaller than that of the other end of the first channel;
the cross-sectional area of the end of the third channel connected with the second channel is larger than that of the other end of the third channel.
Preferably, the pipe diameters of the first cooling pipe and the third cooling pipe are smaller than the pipe diameter of the second cooling pipe.
Preferably, the secondary cooling device is a water-cooling jacket, the water-cooling jacket comprises a cooling outer shell and a cooling inner shell, a sealed cooling area is arranged between the cooling outer shell and the cooling inner shell, the cooling outer shell is sleeved outside the cooling inner shell, the cross section of the water-cooling jacket is of an annular structure, and the central area of the water-cooling jacket is a second cooling channel;
the cooling inner shell comprises a plurality of baffle plates arranged in the vertical direction, and adjacent baffle plates are fixedly connected along the circumferential direction of the second cooling channel to form a zigzag cooling inner shell;
the cooling shell is provided with a jacket steam outlet on the circumferential surface close to one end of the primary cooling device, and a jacket water inlet is arranged on the circumferential surface close to one end of the tertiary cooling device.
Preferably, two adjacent baffle plates which are protruded towards the second cooling channel and fixedly connected on the zigzag-shaped cooling inner shell form a baffle structure;
the upper ends of the deflection structures along the axial direction of the second cooling channel are fixedly connected with the cooling shell through upper end connecting plates, and the lower ends of the deflection structures along the axial direction of the second cooling channel are fixedly connected with the cooling shell through lower end connecting plates;
the upper end connecting plate and the lower end connecting plate are triangular connecting plates, two adjacent sides on the connecting plates are fixedly connected with one ends of two baffle plates in the baffling structure respectively, and the other sides are fixedly connected with the cooling shell; and the upper end connecting plate and the lower end connecting plate are obliquely arranged.
Preferably, upper end connecting plate and lower extreme connecting plate all incline in opposite directions the setting, and all incline towards second cooling channel.
Preferably, the cross section of the cooling shell is rectangular, and the jacket water vapor outlet and the jacket water inlet are respectively arranged on two sides of the cooling shell which are not adjacent.
Or preferably, the third-stage cooling device comprises an annular connecting plate connected to the lower end of the second-stage cooling device, a third cooling channel is arranged in the middle area of the enclosed city of the annular connecting plate, a plurality of atomizing nozzles are arranged on the annular connecting plate, the atomizing nozzles are connected with a water source through the same connecting pipe, and a water pump is arranged on the connecting pipe.
Preferably, the cross section of the annular connecting plate is rectangular, and the atomizing nozzles are respectively arranged on two corresponding side walls of the annular connecting plate.
The utility model discloses utilize continuous one-level cooling device, second grade cooling device and tertiary cooling device cool off blue charcoal, one-level cooling device is through first cooling tube, second cooling tube and third cooling tube realize blue charcoal cooling, through controlling first cooling tube, the coolant liquid velocity in second cooling tube and the third cooling tube, make from top to bottom, water velocity reduces gradually, because the blue charcoal temperature that first cooling tube contacted is higher, intraductal water is by the vaporization volume many, increase rivers can improve heat recovery efficiency, effectively reduce blue charcoal temperature, second cooling tube and third cooling tube, can make intraductal steam export as early as possible, reduce the dwell time of steam in the pipe.
The utility model discloses the cooling inner shell that second grade cooling device's water-cooling pressed from both sides the cover compares the straight panel water-cooling jacket device of equal length for cockscomb structure cooling inner shell, can increase gas heat transfer area, has improved heat exchange efficiency.
The utility model discloses tertiary cooling device adopts the atomizing cooling for atomizing nozzle, and the moisture content of blue charcoal can the effective control plays the humidifying effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic cross-sectional view of a cooling jacket.
Fig. 3 is an expanded view of the cooled inner casing.
Reference numerals: 1-first cooling pipe, 2-second cooling pipe, 3-third cooling pipe, 4-first water vapor outlet, 5-first water inlet, 6-second water vapor outlet, 7-second water inlet, 8-third water vapor outlet, 9-third water inlet, 10-fixing plate, 11-connecting plate, 12-water cooling jacket, 13-jacket water vapor outlet, 14-jacket water inlet, 15-annular connecting plate, 16-atomizing nozzle, 17-cooling outer shell, 18-cooling inner shell, 19-baffle plate, 20-upper end connecting plate and 21-lower end connecting plate.
Detailed Description
The utility model relates to a multistage cooling waste heat recovery utilizes system, including the multistage cooling device who connects between the vertical furnace coke discharging port and the coke pushing system, multistage cooling device includes consecutive one-level cooling device, second grade cooling device and tertiary cooling device, all be provided with the cooling channel that supplies the material circulation on one-level cooling device and second grade cooling device and the tertiary cooling device, be first cooling channel, second cooling channel and third cooling channel respectively, the cooling channel all sets up vertically, and first cooling channel, second cooling channel and third cooling channel communicate in proper order after one end of first cooling channel links to each other with the coke discharging port, and one end of third cooling channel links to each other with the coke pushing system;
the primary cooling device comprises a first cooling pipe 1, a second cooling pipe 2 and a third cooling pipe 3, wherein the first cooling pipe 1, the second cooling pipe 2 and the third cooling pipe 3 are spirally wound along the vertical direction to form hollow channels which are respectively a first channel, a second channel and a third channel, the first channel, the second channel and the third channel are sequentially communicated with each other to form a first cooling channel, and the first channel is communicated with a coke outlet of the vertical furnace;
one end of the first cooling pipe 1 close to the vertical furnace is a first water vapor outlet 4, and the other end of the first cooling pipe 1 is a first water inlet 5; one end of the second cooling device close to the first cooling pipe 1 is a second vapor outlet 6, and the other end of the second cooling pipe 2 is a second water inlet 7; one end of the third cooling pipe 3 close to the second cooling pipe 2 is a third vapor outlet 8, and the other end of the third cooling pipe 3 is a third water inlet 9;
the first cooling pipe 1 and the second cooling pipe 2, and the second cooling pipe 2 and the third cooling pipe 3 are connected through a connecting plate 11;
after the same cooling pipe is spirally wound, the cooling pipes between adjacent layers are connected through the fixing plate 10 to form a first channel, a second channel and a third channel which are circumferentially sealed.
The cross sections of the first channel, the second channel and the third channel are all rectangular.
The longitudinal sections of the first channel and the third channel are both trapezoidal, and the cross sectional area of one end of the first channel, which is connected with the coke outlet of the vertical furnace, is smaller than that of the other end of the first channel;
the cross-sectional area of the end of the third channel connected with the second channel is larger than that of the other end of the third channel.
The pipe diameters of the first cooling pipe 1 and the third cooling pipe 3 are smaller than the pipe diameter of the second cooling pipe 2.
Fixedly connected with flange on the third cooling tube 3 one side towards second grade cooling device, another flange of fixedly connected with on the second grade cooling device one side towards third cooling tube 3, overlap and fixed linking to each other about two flanges, can be expansion joint between two flanges, specifically be through the fixed linking to each other of cockscomb structure connecting piece between two flanges.
The secondary cooling device is a water-cooling jacket 12, the water-cooling jacket 12 comprises a cooling outer shell 17 and a cooling inner shell 18, a sealed cooling area is arranged between the cooling outer shell 17 and the cooling inner shell 18, the cooling outer shell 17 is sleeved outside the cooling inner shell 18, the cross section of the water-cooling jacket 12 is of an annular structure, and the central area of the water-cooling jacket 12 is a second cooling channel;
the cooling inner shell 18 comprises a plurality of baffle plates 19 arranged along the vertical direction, and the adjacent baffle plates 19 are fixedly connected along the circumferential direction of the second cooling channel to form a zigzag cooling inner shell 18;
the circumferential surface of the cooling shell 17 close to one end of the primary cooling device is provided with a jacket vapor outlet 13, and the circumferential surface of the cooling shell 17 close to one end of the tertiary cooling device is provided with a jacket water inlet 14.
Two adjacent baffle plates 19 which are protruded towards the second cooling channel and fixedly connected on the zigzag cooling inner shell 18 form a baffle structure;
the upper ends of the deflection structures along the axial direction of the second cooling channel are fixedly connected with the cooling shell 17 through upper end connecting plates 20, and the lower ends of the deflection structures along the axial direction of the second cooling channel are fixedly connected with the cooling shell 17 through lower end connecting plates 21; when the cooling device is used, two ends of the cooling outer shell 17 and the cooling inner shell 18 can be connected through two annular plugging plates which are arranged correspondingly to each other respectively to form an accommodating cavity for accommodating cooling water, the upper end connecting plate 20 is fixedly connected with the cooling outer shell 17 through the annular plugging plate connected with the upper end of the cooling outer shell 17, and the lower end connecting plate 21 is fixedly connected with the cooling outer shell 17 through the annular plugging plate connected with the lower end of the cooling outer shell 17.
The upper end connecting plate 20 and the lower end connecting plate 21 are both triangular connecting plates 11, two adjacent sides of each connecting plate 11 are fixedly connected with one end of each baffle plate 19 in the baffle structure, and the other side of each connecting plate is fixedly connected with the cooling shell 17; and the upper end connecting plate 20 and the lower end connecting plate 21 are both obliquely arranged.
The upper end connecting plate 20 and the lower end connecting plate 21 are both inclined toward each other and are both inclined toward the second cooling passage.
The cross section of the cooling shell 17 is rectangular, and the jacket water vapor outlet 13 and the jacket water inlet 14 are respectively arranged on two sides of the cooling shell 17 which are not adjacent.
Tertiary cooling device is including connecting annular connecting plate 15 at the second grade cooling device lower extreme, and annular connecting plate 15 encloses the middle zone in city and is third cooling channel, is provided with a plurality of atomizing nozzle 16 on the annular connecting plate 15, atomizing nozzle 16 all links to each other with the water source through same connecting pipe, be provided with the water pump on the connecting pipe.
The cross section of the annular connecting plate 15 is rectangular, and the atomizing nozzles 16 are respectively arranged on two corresponding side walls of the annular connecting plate 15.
The utility model discloses the theory of operation:
(1) high-temperature semi coke generated after the raw coal is thermally decomposed in the pyrolysis furnace moves downwards along with gravity to enter the utility model, and cooling water is filled in the utility model;
(2) the high-temperature semi coke firstly enters a primary cooling device, the high-temperature semi coke is contacted with a first cooling pipe 1, the high-temperature semi coke exchanges heat with cooling water through the pipe wall of the first cooling pipe 1, the cooling water in the pipe is partially vaporized, and water vapor enters a waste heat boiler through a first water vapor outlet 4;
(3) the cooled semi coke continuously moves downwards to exchange heat with the second cooling pipe 2 and the third cooling pipe 3, the high-temperature semi coke is cooled, and meanwhile a large amount of water vapor is generated in the second cooling pipe 2 and the third cooling pipe 3 and enters the waste heat boiler;
through controlling the pipe diameters of the first cooling pipe 1, the second cooling pipe 2 and the third cooling pipe 3, the pipe diameters of the first cooling pipe 1 and the third cooling pipe 3 are smaller than the pipe diameter of the second cooling pipe 2, and the water flow velocity of the first cooling pipe 1, the second cooling pipe 2 and the third cooling pipe 3 is gradually reduced, so that the semi-coke cooling is facilitated.
(4) When the semi coke enters the secondary cooling system, the incandescent semi coke is contacted with the cooling inner shell 18 of the water-cooling interlayer wall, heat exchange is carried out between the semi coke and cooling water in the interlayer through the water-cooling interlayer wall, the temperature of the semi coke is further reduced, meanwhile, the cooling water in the interlayer is vaporized, and the semi coke enters the waste heat boiler through the water vapor outlet 13 of the interlayer;
(5) the semi coke moves downwards gradually under the action of gravity, enters a three-stage cooling device, and the atomizing nozzle 16 sprays water with certain pressure onto the semi coke to play a role in humidifying and cooling.
(6) Steam in the waste heat boiler passes through the steam-water separation device, and finally steam is used for thermal power generation, and water is recycled, and simultaneously new water is injected into the waste heat boiler, so that the water quantity in the cooling device is convenient to maintain.
(7) And finally, transporting the cooled semi-coke to a semi-coke bin.
The utility model discloses utilize continuous one-level cooling device, second grade cooling device and tertiary cooling device cool off blue charcoal, one-level cooling device is through first cooling tube 1, second cooling tube 2 and third cooling tube 3 realize cooling blue charcoal, through controlling first cooling tube 1, the coolant liquid velocity in second cooling tube 2 and the third cooling tube 3, make from top to bottom, water velocity reduces gradually, because the blue charcoal temperature of 1 contact of first cooling tube is higher, intraductal water is by the evaporation capacity many, increase rivers can improve heat recovery efficiency, effectively reduce blue charcoal temperature, second cooling tube 2 and third cooling tube 3, can make intraductal steam export as early as possible, reduce the dwell time of steam in the pipe.
The utility model discloses the cooling inner shell 18 that second grade cooling device's water-cooling pressed from both sides cover 12 compares the straight panel water-cooling of equal length and presss from both sides the cover 12 device for cockscomb structure cooling inner shell 18, can increase gas heat transfer area, has improved heat exchange efficiency.
The utility model discloses tertiary cooling device adopts the atomizing cooling for atomizing nozzle 16, and the moisture content of blue charcoal can the effective control plays the humidifying effect.
Claims (10)
1. A multi-section cooling waste heat recycling system comprises a multi-stage cooling device connected between a coke outlet of a vertical furnace and a coke pushing system, and is characterized in that the multi-stage cooling device comprises a first-stage cooling device, a second-stage cooling device and a third-stage cooling device which are sequentially connected, cooling channels for material circulation are arranged on the first-stage cooling device, the second-stage cooling device and the third-stage cooling device and are respectively a first cooling channel, a second cooling channel and a third cooling channel, the cooling channels are vertically arranged, one end of the first cooling channel is connected with the coke outlet after the first cooling channel, the second cooling channel and the third cooling channel are sequentially communicated, and one end of the third cooling channel is connected with the coke pushing system;
the primary cooling device comprises a first cooling pipe (1), a second cooling pipe (2) and a third cooling pipe (3), wherein the first cooling pipe (1), the second cooling pipe (2) and the third cooling pipe (3) are spirally wound along the vertical direction to form hollow channels which are respectively a first channel, a second channel and a third channel, the first channel, the second channel and the third channel are sequentially communicated with one another to form a first cooling channel, and the first channel is communicated with a coke outlet of the vertical furnace;
one end of the first cooling pipe (1) close to the vertical furnace is a first water vapor outlet (4), and the other end of the first cooling pipe (1) is a first water inlet (5); one end of the second cooling device, which is close to the first cooling pipe (1), is provided with a second vapor outlet (6), and the other end of the second cooling pipe (2) is provided with a second water inlet (7); one end of the third cooling pipe (3) close to the second cooling pipe (2) is a third vapor outlet (8), and the other end of the third cooling pipe (3) is a third water inlet (9);
the first cooling pipe (1) is connected with the second cooling pipe (2), and the second cooling pipe (2) is connected with the third cooling pipe (3) through a connecting plate (11);
after the same cooling pipe is spirally wound, the cooling pipes between adjacent layers are connected through a fixing plate (10) to form a first channel, a second channel and a third channel which are sealed in the circumferential direction.
2. The multi-stage cooling waste heat recovery and utilization system of claim 1, wherein the cross sections of the first channel, the second channel and the third channel are rectangular.
3. The multi-stage cooling waste heat recycling system of claim 2, wherein the longitudinal sections of the first channel and the third channel are both trapezoidal, and the cross-sectional area of the end of the first channel connected with the coke outlet of the vertical furnace is smaller than the cross-sectional area of the other end of the first channel;
the cross-sectional area of the end of the third channel connected with the second channel is larger than that of the other end of the third channel.
4. The multi-stage cooling waste heat recycling system according to claim 3, wherein the pipe diameters of the first cooling pipe (1) and the third cooling pipe (3) are smaller than the pipe diameter of the second cooling pipe (2).
5. The multi-section cooling waste heat recycling system according to claim 1, wherein the secondary cooling device is a water cooling jacket (12), the water cooling jacket (12) comprises a cooling outer shell (17) and a cooling inner shell (18), a sealed cooling area is arranged between the cooling outer shell (17) and the cooling inner shell (18), the cooling outer shell (17) is sleeved outside the cooling inner shell (18), the cross section of the water cooling jacket (12) is of an annular structure, and the central area of the water cooling jacket (12) is a second cooling channel;
the cooling inner shell (18) comprises a plurality of baffle plates (19) arranged in the vertical direction, and adjacent baffle plates (19) are fixedly connected along the circumferential direction of the second cooling channel to form a zigzag cooling inner shell (18);
the circumferential surface of one end of the cooling shell (17) close to the primary cooling device is provided with a jacket vapor outlet (13), and the circumferential surface of one end of the cooling shell (17) close to the tertiary cooling device is provided with a jacket water inlet (14).
6. The multi-stage cooling waste heat recycling system according to claim 5, wherein two adjacent baffle plates (19) which are protruded towards the second cooling channel and fixedly connected on the zigzag cooling inner shell (18) form a baffle structure;
the upper ends of the deflection structures along the axial direction of the second cooling channel are fixedly connected with the cooling shell (17) through upper end connecting plates (20), and the lower ends of the deflection structures along the axial direction of the second cooling channel are fixedly connected with the cooling shell (17) through lower end connecting plates (21);
the upper end connecting plate (20) and the lower end connecting plate (21) are both triangular connecting plates (11), two adjacent sides of each connecting plate (11) are fixedly connected with one end of each of two baffle plates (19) in the baffle structure, and the other side of each connecting plate is fixedly connected with the cooling shell (17); and the upper end connecting plate (20) and the lower end connecting plate (21) are obliquely arranged.
7. The multi-stage cooling waste heat recovery system according to claim 6, wherein the upper end connecting plate (20) and the lower end connecting plate (21) are inclined towards each other and are inclined towards the second cooling channel.
8. The multi-stage cooling waste heat recycling system according to claim 7, wherein the cooling shell (17) has a rectangular cross section, and the jacket water vapor outlet (13) and the jacket water inlet (14) are respectively disposed on two sides of the cooling shell (17) which are not adjacent to each other.
9. The multi-stage cooling waste heat recycling system according to any one of claims 1 to 8, wherein the tertiary cooling device comprises an annular connecting plate (15) connected to the lower end of the secondary cooling device, the middle area of the enclosed area of the annular connecting plate (15) is a third cooling channel, a plurality of atomizing nozzles (16) are arranged on the annular connecting plate (15), the atomizing nozzles (16) are all connected with a water source through the same connecting pipe, and a water pump is arranged on the connecting pipe.
10. The multi-stage cooling waste heat recycling system according to claim 9, wherein the cross section of the annular connecting plate (15) is rectangular, and the atomizing nozzles (16) are respectively disposed on two corresponding side walls of the annular connecting plate (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921042266.7U CN210374667U (en) | 2019-07-05 | 2019-07-05 | Multistage cooling waste heat recovery utilizes system |
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| CN201921042266.7U CN210374667U (en) | 2019-07-05 | 2019-07-05 | Multistage cooling waste heat recovery utilizes system |
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