CN203794834U - Multi-layer rotary kiln for destructive distillation of granules - Google Patents
Multi-layer rotary kiln for destructive distillation of granules Download PDFInfo
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- CN203794834U CN203794834U CN201420153731.5U CN201420153731U CN203794834U CN 203794834 U CN203794834 U CN 203794834U CN 201420153731 U CN201420153731 U CN 201420153731U CN 203794834 U CN203794834 U CN 203794834U
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 44
- 239000008187 granular material Substances 0.000 title abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 88
- 239000002245 particle Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 abstract 2
- 239000004058 oil shale Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- -1 mechanical operation Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model relates to a multi-layer rotary kiln for destructive distillation of granules. The multi-layer rotary kiln comprises a kiln head, a kiln tail, a kiln body, a supporting device, a transmission device, a wireless temperature measuring device and an automatic control system; a feeding device and a screw conveying device are arranged at the front end of the kiln head; a hot flue gas exhaust pipeline is arranged on the upper part of the kiln head, while a discharge device is arranged on the lower part of the kiln head; a feeding seal is arranged between the kiln head and the kiln body; a destructive distillation gas exhaust pipeline is arranged at the tail end of the kiln tail; a hot flue gas inlet pipeline is arranged on the kiln tail; a seal is arranged between the kiln tail and the kiln body; the kiln body comprises an outer barrel and an inner barrel, the two of which are different in diameter and concentrically nested to each other, and a thermal compensation support, a common support and a roller are arranged between the outer barrel and the inner barrel; a first screw stirring plate is arranged on the inner wall of the inner barrel, while a second screw stirring plate is arranged on the inner wall of the outer barrel; a sealing discharge device is arranged at the rear end of the kiln body; and a feeding/discharging device is arranged at the front end of the kiln body. The multi-layer rotary kiln is simple in structure and capable of avoiding the desynchrony phenomenon due to two transmission devices.
Description
Technical Field
The utility model relates to a multilayer rotary kiln for dry distillation small granule.
Background
The oil shale is used as a supplement and alternative energy of petroleum, and is rich in oil shale resources in China. The processes adopted by the dry distillation of the oil shale at present are divided into a solid heat carrier dry distillation method and a gas heat carrier dry distillation method. However, most of domestic and foreign dry distillation processes can only dry distill particles with the diameter of more than 20mm, small particles with the diameter of less than 20mm have small particles, small space between materials and poor air permeability, and the heat temperature required by dry distillation cannot be uniformly transferred to the materials, so that furnace blockage and coking are easily caused, the dry distillation furnace cannot normally operate, the small-particle oil shale is not used, and the resource waste rate reaches more than 20%.
The Petrosix dry distillation technology is an oil shale dry distillation method developed by Brazil national oil companies, a vertical dry distillation furnace is adopted, the shale is from top to bottom, circulating gas is from bottom to top, the processing block diameter is 6.4-76 mm, and small-particle oil shale cannot be processed. The Kiviter technology developed by estonia is also only capable of handling bulk materials. Domestic smoothing type gas retort can only dry distill oil shale with the diameter of more than 12 mm.
The typical processes aiming at the dry distillation of the small-particle oil shale abroad are three, one process is to adopt an Australian ATP furnace (Albere-Taciuk Processor), the device is a solid heat carrier rotary dry distillation furnace, the equipment is huge, the structure is complex, the power consumption is large, the operation is unstable, the furnace is frequently stopped for maintenance, the start-up rate is only about 50 percent, and the continuous operation is only carried out for 96 days at the longest time. One is a Geloter (Galoter) furnace of Eisaria, which can process oil shale of 0-25 mm, the processing capacity is 3000t/d, the equipment has the problems of low operation rate, large proportion of heavy oil, mechanical operation, oil gas dust removal, smoke dust removal and the like. The third is Tosco-II oil shale dry distillation technology developed by the American Tosco company, which is used for processing small-particle oil shale, the system adopts porcelain balls as heat carriers, the oil recovery rate reaches 90 percent, and the equipment has the following problems: high equipment investment, large maintenance amount, low thermal efficiency and no utilization of latent heat (fixed carbon) in the oil shale semicoke. There are two kinds of small granule dry distillation devices which are researched domestically in recent two years, one is DG technology of the university of the big theory of technology, regard solid as heat carrier; the second is the dry distillation and decarbonization process of the oil shale fluidized bed developed by Shanghai Bosheng company, the powdered oil shale contacts with a high-temperature gas heat carrier, and the powdered oil shale is fluidized and dry distilled, but the oil shale needs to be crushed to the particle size of less than 0.3mm, and the equipment and the process are complicated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a multilayer rotary kiln for dry distillation small granule to overcome the defect that exists among the prior art.
The technical scheme of the utility model is that: a multilayer rotary kiln for dry distillation of small particles is characterized in that:
comprises a kiln head, a kiln tail, a kiln body, a supporting device, a transmission device, a wireless temperature measuring device and an automatic control system; wherein,
the front end of the kiln head is provided with a feeding device and a spiral conveying device, the upper part of the kiln head is provided with a hot flue gas exhaust pipeline, the lower part of the kiln head is provided with a discharging device, and a feeding seal is arranged between the kiln head and the kiln body;
a dry distillation gas exhaust pipeline is arranged at the tail end of the kiln tail, a hot flue gas inlet pipeline is arranged on the kiln tail, and a seal is arranged between the kiln tail and the kiln body;
the kiln body comprises an outer cylinder body and an inner cylinder body which are concentrically sleeved with each other in different diameters, a thermal compensation support, a common support and a roller are arranged between the outer cylinder body and the inner cylinder body, a first spiral material copying plate is arranged on the inner wall of the inner cylinder body, a second spiral material copying plate is arranged on the inner wall of the outer cylinder body, a sealed material discharging device is arranged at the rear end of the kiln body, and a material feeding and discharging device is arranged at the front end of the kiln body;
the kiln body is arranged on the supporting device and connected with the transmission device;
the wireless temperature measuring device is arranged on the kiln body,
and the automatic control system is connected with the variable frequency motor through a cable.
3 groups of supports for supporting the inner cylinder are uniformly distributed between the inner cylinder and the outer cylinder, wherein the supports are respectively 8 thermal compensation supports, 8 thermal compensation supports and 8 common supports;
the running roller distributes along interior barrel outer wall circumference has eight, and running roller one end is tight with interior barrel outer wall top, and the other end links to each other with outer barrel.
The sealing discharge device is 8 groups of steel balls which are uniformly distributed on the outer wall of the inner cylinder body in the circumferential direction and are pressed on the springs;
the material feeding and discharging device is 4 groups of snap springs and material doors which are uniformly distributed on the circumferential direction of the outer wall of the inner cylinder body。
A first spiral material copying plate is welded on the inner wall of the inner cylinder, and a second spiral material copying plate is welded on the inner wall of the outer cylinder.
The technical effects of the utility model are that:
the utility model discloses it is big to be suitable for the material scope, can be used for materials such as the present unable dry distillation of dry distillation tiny particle oil shale, coal.
The utility model discloses a one set of transmission drives the speed reducer through the motor, and the pinion of redriving drives the rotary kiln operation on the ring gear of the kiln body again. Simple structure avoids appearing the asynchronous phenomenon that two sets of transmission brought.
The utility model discloses a hot flue gas and hot semicoke in the annular channel between interior outer tube heat the material in the rotary kiln inner tube to about 500 ℃, make oil shale material pyrolysis, produce dry distillation gas and semicoke, and the dry distillation gas obtains cold coal gas and shale oil product after the separation cooling. And the semicoke enters the annular region from the inner cylinder through the sealed discharge device, and the semicoke waste heat is transferred to the inner cylinder material. After the semicoke is conveyed to the front end of the kiln body, a part of the semicoke is discharged out of the rotary kiln through the material inlet and discharge device, and the rest semicoke enters the inner cylinder from the annular region through the material inlet and discharge device and is mixed with the normal temperature material to preheat the material. Has the characteristics of high thermal efficiency, large range of material treatment, high yield and the like.
The whole production process of the system is carried out in the closed kiln body, the inner barrel wall is heated in the annular channel by using the inert flue gas and the hot semicoke, the dry distillation is completed in the manner that the inner barrel material is heated, the oxygen content in the kiln body is effectively controlled, and therefore the safety of the production process is ensured, and no explosion danger exists.
Drawings
FIG. 1 is a general view of the structure of the present invention;
FIG. 2 is a schematic view of a material feeding and discharging device;
FIG. 3 is a schematic structural view of a roller supporting device;
FIGS. 4 and 5 are schematic structural views of a thermal compensation bracket;
FIG. 6 is a schematic view of a generic scaffold;
FIG. 7 is a schematic view of a sealed discharge device.
The reference signs are:
1-kiln head, 2-feeding device, 3-spiral conveying device, 4-hot flue gas exhaust pipeline, 5-feeding seal, 6-outer cylinder, 7-inner cylinder, 8, 10-thermal compensation support, 12-common support, 9-kiln body, 11-wireless temperature measuring device, 13-first spiral material-copying plate, 14-second spiral material-copying plate, 15, 19-seal, 16-hot flue gas intake pipeline, 17-kiln tail, 18-dry distillation gas exhaust pipeline, 20-seal discharge device, 21-automatic control system, 22, 24-supporting device, 23-transmission device, 25-roller, 26-feeding device, 27-discharge device, 28-clamp spring, 29-material door, 32-plate, 33-trough plate, 34-pin shaft.
Detailed Description
The utility model belongs to the technical field of the low temperature dry distillation of tiny particle oil shale, concretely relates to oil shale low temperature dry distillation equipment based on multilayer rotary kiln.
Referring to fig. 1 to 7, the utility model relates to a multilayer rotary kiln for dry distillation of small particles has the following specific structure:
comprises a kiln head 1, a kiln tail 17, a kiln body 9, supporting devices 22 and 24, a transmission device 23, a wireless temperature measuring device 11 and an automatic control system 21; wherein,
the front end of the kiln head 1 is provided with a feeding device 2 and a spiral conveying device 3, the upper part of the kiln head 1 is provided with a hot flue gas exhaust pipeline 4, the lower part of the kiln head 1 is provided with a discharging device 27, and a feeding seal 5 is arranged between the kiln head 1 and a kiln body 9;
a dry distillation gas exhaust pipeline 18 is arranged at the tail end of the kiln tail 17, a hot flue gas inlet pipeline 16 is arranged on the kiln tail 17, and seals 15 and 19 are arranged between the kiln tail 17 and the kiln body 9;
the kiln body 9 comprises an outer cylinder body 6 and an inner cylinder body 7 which are concentrically sleeved with different diameters, thermal compensation supports 8 and 10, a common support 12 and a roller 25 are arranged between the outer cylinder body 6 and the inner cylinder body 7, a first spiral material copying plate 13 is arranged on the inner wall of the inner cylinder body 7, a second spiral material copying plate 14 is arranged on the inner wall of the outer cylinder body 6, a sealing material discharging device 20 is arranged at the rear end of the kiln body 9, and a material feeding and discharging device 26 is arranged at the front end of the kiln body 9;
the kiln body 9 is arranged on the supporting devices 22 and 24 and is connected with the transmission device 23;
the wireless temperature measuring device 11 is arranged on the kiln body 9,
the automatic control system 21 is connected with the variable frequency motor through a cable.
In the utility model, 3 groups of supports for supporting the inner cylinder 7 are uniformly distributed between the inner cylinder 7 and the outer cylinder 6, namely 8 thermal compensation supports 8, 8 thermal compensation supports 10 and 8 common supports 12;
eight rollers 25 are circumferentially distributed along the outer wall of the inner barrel 7, one end of each roller 25 is tightly propped against the outer wall of the inner barrel 7, and the other end of each roller is connected with the outer barrel 6.
The sealing and discharging device 20 of the utility model can be 8 groups of steel balls which are evenly distributed on the outer wall of the inner cylinder 7 along the circumferential direction and are pressed on the spring; the spring presses the steel ball at the position of the material door by means of elasticity to seal the material door, when materials need to be discharged, the materials are compressed by the dead weight spring, and a gap exists between the steel ball and the material door to discharge the materials, so that the discharging and sealing effects are achieved;
the material feeding and discharging device 26 may be 4 sets of snap springs 28 and a material gate 29 uniformly distributed on the outer wall of the inner cylinder 7. The clamping spring 28 closes the material door 29 by means of elastic force, and when materials enter, the clamping spring 28 overcomes the elastic force of the clamping spring 28 by means of extrusion force of the materials, and the material door 29 is opened for feeding.
The utility model provides a concrete welding of inner tube 7 inner wall has first spiral copying board 13, and concrete welding of outer barrel (6) inner wall has second spiral copying board 14.
The feeding device 2, the spiral feeding device 3, the sealing discharging device 20, the feeding and discharging device 26, the discharging device 27, the supporting devices 22 and 24, the transmission device 23, the wireless temperature measuring device 11 and the automatic control system 21 in the utility model are all the prior art; wherein,
the supporting devices 22 and 24 consist of a tugboat, a rolling ring and a bearing seat;
the transmission device 23 is composed of a motor, a speed reducer, a coupler, a bearing seat, a gear ring and the like.
The wireless temperature measuring device 11 comprises a wireless temperature sensor, a signal restoring device, a multi-channel wireless concentrator and the like;
the automatic control system 21 is composed of a PLC (programmable logic controller) as a control core, a variable frequency speed regulator drive, a man-machine operation interface, wireless data transmission and a wired industrial control network.
The feeding device 2 consists of a hopper and a double flap valve.
The spiral conveying device is composed of a plurality of spiral blades which are axially distributed.
The discharging device 27 is composed of a hopper and a double flap valve.
The front end of the kiln head 1 is provided with a feeding device 2 and a spiral conveying device 3, the main function of the kiln head 1 is to ensure the sealing of materials when the materials enter an inner cylinder 7, when tailings are discharged and when tail gas is recovered, the materials enter the kiln head 1 through the feeding device 2 and are conveyed into the inner cylinder 7 of a kiln body 9 through the spiral conveying device 3, and the kiln body 9 is a channel for material dry distillation. A feeding seal 5 is arranged between the kiln head 1 and the kiln body 9, so that gas overflow from the inside of the kiln body 9 and the entrance of outside air can be avoided.
The inner wall of the inner cylinder 7 is welded with a first spiral material shoveling plate 13, materials in the inner cylinder 7 are conveyed to a kiln tail 17 from the kiln head 1, and the kiln tail 17 has the main function of ensuring that hot flue gas enters an annular channel and is sealed when dry distillation gas is recovered. The outer cylinder 6 and the inner cylinder 7 are concentrically sleeved to form an annular interval which is a hot flue gas and semicoke running channel. Wherein hot flue gas enters the annular region from a hot flue gas inlet pipeline 16 at the kiln tail 17 to heat the inner cylinder body 7, and simultaneously, the materials are heated to dry distill the materials to form semicoke, and dry distillation gas is separated out. Wherein the dry distillation gas is discharged out of the rotary kiln through an exhaust pipeline 18 arranged at the kiln tail 17; after the temperature of the hot flue gas is reduced, the hot flue gas is discharged out of the rotary kiln through an exhaust pipeline 4 of the kiln head; the hot semicoke enters the annular space from the inner cylinder 7 through a sealed discharge device 20 arranged at the rear end of the kiln body 9. Seals 15 and 19 are arranged between the kiln body 9 and the kiln tail 17, so that gas overflow from the inside of the kiln body 9 and the entrance of outside air can be avoided.
The sealing and discharging device 20 is composed of a plurality of springs and steel balls distributed on the circumference of the outer wall of the inner cylinder 7. The spring at the lower end is compressed by the dead weight of the steel ball and the gravity of the material, the steel ball moves downwards to open the bin gate, and the material is discharged from the inner cylinder body 7 through the bin gate. And the material door positioned at the middle-high end is sealed by the elasticity of the spring and the gravity of the steel ball, so that air is blocked, and sealed material discharge is realized.
The inner wall of the outer cylinder 6 is welded with a second spiral material shoveling plate 14, when the semicoke enters the annular interval, the semicoke is conveyed to the kiln head 1 from the kiln tail 17 by the second spiral material shoveling plate 14, and simultaneously, the waste heat of the semicoke is transferred to the material in the inner cylinder 7. After the semicoke is conveyed to the front end of the kiln body, the semicoke passes through a feeding and discharging device 26 arranged at the front end of the kiln body 9, a part of the semicoke is discharged into the kiln head 1 through the feeding and discharging device 26, and finally is discharged out of the rotary kiln through a discharging device 27. The rest of the semicoke passes through the material inlet and discharge device 26 from the annular region and then enters the inner cylinder 7 to be mixed with the new normal-temperature material entering through the spiral material conveying device 3, and the rest heat of the semicoke is further transferred to the new normal-temperature material.
The material feeding and discharging device 26 is composed of a plurality of clamp springs 28 and a material door 29 which are distributed on the outer wall of the inner cylinder 7 in the circumferential direction. Wherein, the material door 29 positioned in the middle of the inner cylinder 7 is under the gravity action of the semicoke falling on the upper part of the material door 29, the tension of the clamp spring 28 is overcome, the material door 29 is opened to enter the inner cylinder 7, and after the semicoke enters, the material door 29 is automatically closed under the action of the clamp spring 28, thereby effectively isolating the air. And the material doors 29 at the bottom and the upper part are in the vertical direction, and the semicoke cannot be opened, so that a part of the semicoke cannot enter the inner barrel 7 and is discharged out of the rotary kiln. The size and the number of the material doors can be set according to the ratio of the inlet and the outlet of the semicoke.
The rotary kiln is provided with a plurality of thermal compensation supports 8 and 10 for supporting the inner cylinder 7 and a common support 12 between the inner cylinder 7 and the outer cylinder 6. The thermal compensation support 8 and the thermal compensation support 10 are similar in structure, a groove plate 33 is installed on the thermal compensation support 8, the groove plate 33 is connected to the outer wall of the inner cylinder 7, and a long groove hole is formed in the groove plate. The plate 32 is bolted to the inner wall of the outer cylinder 6, and the slotted plate 33 and the plate 32 are connected by a pin 34. The thermal compensation supports 8 and 10 not only play a role of supporting, but also transmit the torque of the outer cylinder 6 to the inner cylinder 7, and the slotted holes formed in the slotted plates 33 allow the inner cylinder 7 to axially move, so that the thermal expansion deformation of the inner cylinder 7 caused by heating is effectively compensated. The common bracket 12 connects the inner cylinder 7 and the outer cylinder 6 through a support plate and a bolt, and effectively transmits torque between the inner cylinder and the outer cylinder.
The rotary kiln is provided with a plurality of rollers 25 supporting the inner cylinder 7 between the inner cylinder 7 and the outer cylinder 6, and the rollers 25 are distributed along the circumferential direction of the outer wall of the inner cylinder 7. One end of the roller 25 is tightly propped against the outer wall of the inner cylinder 7, and the other end of the roller is connected with the outer cylinder 6, so that radial runout is prevented when the inner cylinder 7 moves axially, and coaxiality of the inner cylinder and the outer cylinder is ensured.
The supporting devices 24 and 22 at the two ends of the kiln body 9 bear the kiln body, the main function of the supporting device is to ensure the kiln body to stably rotate, the supporting device is driven by the transmission device 23 to stably operate, and the transmission device 23 provides power for the rotation of the kiln body of the rotary kiln. The kiln body 9 is provided with a plurality of wireless temperature measuring devices 11, and kiln temperature data conversion and data terminal display are realized through networking of devices such as a wireless data centralized display device, a wireless temperature reduction device and the like which are arranged in an automatic control system 21.
The wireless temperature measuring device 11 comprises a wireless temperature sensor, a signal restoring device, a multi-channel wireless concentrator and the like, and effectively solves the problem that the rotary brick kiln cannot be wired;
the automatic control system 21 is composed of a PLC (programmable logic controller) as a control core, a variable frequency speed regulator drive, a man-machine operation interface, wireless data transmission and a wired industrial control network, and ensures that all working condition parameters in production are stable and the system runs normally.
The utility model discloses a theory of operation is:
the material enters the kiln head 1 through the feeding device 2 and is sent into the inner cylinder 7 of the kiln body 9 through the spiral material conveying device 3. Under the action of the first spiral material shoveling plate 13, materials in the inner cylinder 7 are conveyed to the kiln tail 17 from the kiln head 1, hot flue gas enters an annular interval between the inner cylinder and the outer cylinder from a hot flue gas inlet pipeline 16 of the kiln tail 17, the materials are heated, the materials are subjected to dry distillation, semicoke is formed, and dry distillation gas is separated out. Wherein the dry distillation gas is discharged out of the rotary kiln device through an exhaust duct 18 arranged at the kiln tail 17. The semicoke enters the annular region from the inner cylinder 7 through the sealed discharge device 20, and moves from the kiln tail 17 to the kiln head 1 under the action of the second spiral material shoveling plate 14, and simultaneously, the semicoke waste heat is transferred to the materials in the inner cylinder 7. After the semicoke is conveyed to the front end of the kiln body 9, a part of the semicoke is discharged out of the rotary kiln through a material inlet and discharge device 26 arranged at the front end of the kiln body 9, and the rest semicoke passes through the material inlet and discharge device 26 from the annular region and then enters the inner cylinder body 7 to be mixed with new materials entering through the spiral conveying device 3, so that the rest heat of the semicoke is further transferred to the materials.
The utility model discloses it is big to be suitable for the material scope, can be used for materials such as dry distillation tiny particle oil shale, coal.
The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (4)
1. A multilayer rotary kiln for dry distillation of small particles is characterized in that:
comprises a kiln head (1), a kiln tail (17), a kiln body (9), supporting devices (22, 24), a transmission device (23), a wireless temperature measuring device (11) and an automatic control system (21); wherein,
the front end of the kiln head (1) is provided with a feeding device (2) and a spiral conveying device (3), the upper part of the kiln head (1) is provided with a hot flue gas exhaust pipeline (4), the lower part of the kiln head (1) is provided with a discharging device (27), and a feeding seal (5) is arranged between the kiln head (1) and the kiln body (9);
a dry distillation gas exhaust pipeline (18) is arranged at the tail end of the kiln tail (17), a hot flue gas inlet pipeline (16) is arranged on the kiln tail (17), and seals (15 and 19) are arranged between the kiln tail (17) and the kiln body (9);
the kiln body (9) comprises an outer cylinder body (6) and an inner cylinder body (7) which are concentrically sleeved with different diameters, thermal compensation supports (8 and 10), a common support (12) and a roller (25) are arranged between the outer cylinder body (6) and the inner cylinder body (7), a first spiral material copying plate (13) is arranged on the inner wall of the inner cylinder body (7), a second spiral material copying plate (14) is arranged on the inner wall of the outer cylinder body (6), a sealed material discharging device (20) is arranged at the rear end of the kiln body (9), and a material feeding and discharging device (26) is arranged at the front end of the kiln body (9);
the kiln body (9) is arranged on the supporting devices (22, 24) and is connected with the transmission device (23);
the wireless temperature measuring device (11) is arranged on the kiln body (9),
and the automatic control system (21) is connected with the variable frequency motor through a cable.
2. The multi-layered rotary kiln for retorting small particles according to claim 1, wherein:
3 groups of supports for supporting the inner cylinder body (7) are uniformly distributed between the inner cylinder body (7) and the outer cylinder body (6), and are respectively 8 thermal compensation supports (8), 8 thermal compensation supports (10) and 8 common supports (12);
eight rollers (25) are circumferentially distributed along the outer wall of the inner barrel body (7), one end of each roller (25) is tightly propped against the outer wall of the inner barrel body (7), and the other end of each roller is connected with the outer barrel body (6).
3. The multi-layered rotary kiln for dry distillation of small particles according to claim 1 or 2, wherein:
the sealing discharge device (20) is 8 groups of steel balls which are uniformly distributed on the outer wall of the inner cylinder (7) in the circumferential direction and pressed on the springs;
the material feeding and discharging device (26) is 4 groups of snap springs (28) and material doors (29) which are uniformly distributed on the circumferential direction of the outer wall of the inner cylinder body (7)。
4. The multi-layered rotary kiln for retorting small particles according to claim 1, wherein:
a first spiral material copying plate (13) is welded on the inner wall of the inner cylinder (7), and a second spiral material copying plate (14) is welded on the inner wall of the outer cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153731.5U CN203794834U (en) | 2014-04-01 | 2014-04-01 | Multi-layer rotary kiln for destructive distillation of granules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153731.5U CN203794834U (en) | 2014-04-01 | 2014-04-01 | Multi-layer rotary kiln for destructive distillation of granules |
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| Publication Number | Publication Date |
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| CN203794834U true CN203794834U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153731.5U Expired - Fee Related CN203794834U (en) | 2014-04-01 | 2014-04-01 | Multi-layer rotary kiln for destructive distillation of granules |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106123647A (en) * | 2016-08-17 | 2016-11-16 | 中国重型机械研究院股份公司 | A kind of vertical short route solid powder heat-exchange system |
| CN106701121A (en) * | 2017-01-18 | 2017-05-24 | 中国重型机械研究院股份公司 | Multi-tube combined external-heat type pyrolysis device |
| CN107033925A (en) * | 2017-06-27 | 2017-08-11 | 农业部规划设计研究院 | Multi-thread spiral copies plate type biomass revolution pyrolysis reactor |
| CN110440581A (en) * | 2019-08-19 | 2019-11-12 | 二重（德阳）重型装备有限公司 | Double-layer furnace body rotary reaction furnace |
| CN111637466A (en) * | 2020-06-04 | 2020-09-08 | 山东理工大学 | Waste heat recovery type organic waste incineration rotary kiln |
| CN112325630A (en) * | 2020-11-30 | 2021-02-05 | 平顶山市天宝特种材料有限公司 | Combined fine chemical roasting method |
| CN112920822A (en) * | 2019-12-06 | 2021-06-08 | 国家能源投资集团有限责任公司 | Rotary kiln type pyrolysis reactor |
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2014
- 2014-04-01 CN CN201420153731.5U patent/CN203794834U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123647A (en) * | 2016-08-17 | 2016-11-16 | 中国重型机械研究院股份公司 | A kind of vertical short route solid powder heat-exchange system |
| CN106123647B (en) * | 2016-08-17 | 2018-02-06 | 中国重型机械研究院股份公司 | A kind of vertical short route solid powder heat-exchange system |
| CN106701121A (en) * | 2017-01-18 | 2017-05-24 | 中国重型机械研究院股份公司 | Multi-tube combined external-heat type pyrolysis device |
| CN107033925A (en) * | 2017-06-27 | 2017-08-11 | 农业部规划设计研究院 | Multi-thread spiral copies plate type biomass revolution pyrolysis reactor |
| CN107033925B (en) * | 2017-06-27 | 2023-10-20 | 农业部规划设计研究院 | Multi-line spiral shoveling plate type biomass rotary pyrolysis reactor |
| CN110440581A (en) * | 2019-08-19 | 2019-11-12 | 二重（德阳）重型装备有限公司 | Double-layer furnace body rotary reaction furnace |
| CN112920822A (en) * | 2019-12-06 | 2021-06-08 | 国家能源投资集团有限责任公司 | Rotary kiln type pyrolysis reactor |
| CN111637466A (en) * | 2020-06-04 | 2020-09-08 | 山东理工大学 | Waste heat recovery type organic waste incineration rotary kiln |
| CN112325630A (en) * | 2020-11-30 | 2021-02-05 | 平顶山市天宝特种材料有限公司 | Combined fine chemical roasting method |
| CN112325630B (en) * | 2020-11-30 | 2022-08-16 | 平顶山市天宝特种材料有限公司 | Combined fine chemical roasting method |
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