CN212457968U

CN212457968U - Rotary kiln head waste heat recovery device

Info

Publication number: CN212457968U
Application number: CN202020795854.4U
Authority: CN
Inventors: 李欣涛; 向久华; 王兴
Original assignee: Cucc Nanyang Wolong Cement Co ltd
Current assignee: Cucc Nanyang Wolong Cement Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-02-02
Anticipated expiration: 2030-05-13

Abstract

The utility model belongs to the technical field of the rotary kiln technique and specifically relates to a rotary kiln head waste heat recovery device is related to, which comprises a frame, the rotary kiln of setting in the frame, the kiln head portion of setting on the rotary kiln and the kiln afterbody of setting on the rotary kiln, rotary kiln and frame normal running fit, be provided with in the frame and be used for carrying out the heat absorber who retrieves to the heat in the kiln head portion, the heat absorber cover is located on the kiln head portion, be provided with on the kiln afterbody and be used for carrying out the heat-transfer device who retrieves to the tail gas of kiln afterbody department, one side of frame is provided with the heat collection jar, heat absorber and heat-transfer device all. Through being provided with heat sink at kiln head portion, carry out effectual recovery with the heat in the kiln head portion to carry the heat and use in the thermal-arrest jar, waste heat collection efficiency is higher, can reduce the waste of the energy.

Description

Rotary kiln head waste heat recovery device

Technical Field

The utility model belongs to the technical field of the rotary kiln technique and specifically relates to a rotary kiln head waste heat recovery device is related to.

Background

The rotary kiln is divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials to be treated, and the rotary kiln is composed of kiln head, kiln body, kiln tail, rotary kiln support frame, preheating tower, cooler and conveyer belt. When the kiln head of the rotary kiln is used, a large amount of heat can be generated, after the use is finished, the heat can be transferred to the air to be dissipated, and the heat needs to be effectively recycled through the preheating recycling device.

The prior Chinese patent with publication number CN207922885U discloses a rotary kiln waste heat recovery system, which comprises a rotary kiln, a preheating vertical cylinder, a cyclone dust collector and a waste heat boiler, wherein barite and coal powder are added into the rotary kiln through a feed pipe during working, hot dust and part of cold coal powder in the rotary kiln are mixed and then enter the preheating vertical cylinder, a large amount of coal powder is contained in the mixture and returns to the rotary kiln, the rest mixture enters the cyclone dust collector along with hot air, and the hot air enters a U-shaped heat exchange cavity of the waste heat boiler through a hot air pipe to exchange heat so as to generate high-pressure main bubbles.

The above prior art solutions have the following drawbacks: although this kind of rotary kiln waste heat recovery system can carry out effectual use to the hot-air in the rotary kiln, at the waste heat recovery in-process to the rotary kiln, can't retrieve the heat of the inner wall of rotary kiln, lead to waste heat collection efficiency lower, cause the waste of the energy, consequently, need improve it.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a rotary kiln head waste heat recovery device, it carries out effectual recovery through being provided with heat sink at kiln head portion with the heat in the kiln head portion to use in carrying the thermal-arrest jar with the heat, waste heat collection efficiency is higher, can reduce the waste of the energy.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a rotary kiln head waste heat recovery device, includes frame, the rotary kiln of setting in the frame, sets up kiln head portion on the rotary kiln and sets up the kiln afterbody on the rotary kiln, rotary kiln and frame normal running fit, be provided with the heat sink that is used for carrying out the recovery to the heat in the kiln head portion in the frame, the heat sink cover is located on the kiln head portion, be provided with the heat-transfer device that is used for carrying out the recovery to the tail gas of kiln afterbody department on the kiln afterbody, one side of frame is provided with the heat collection jar, heat sink and heat-transfer device all communicate with the heat collection jar intercommunication

Through adopting above-mentioned technical scheme, carry out heat conduction treatment with kiln head through heat sink, heat conduction device is used for retrieving the tail gas of kiln tail department, and heat sink and heat conduction device carry the thermal-arrest jar in with heat recovery back, carry water thermal treatment, use, and this waste heat recovery device's waste heat collection efficiency is higher, can reduce the waste of the energy.

The present invention may be further configured in a preferred embodiment as: the heat absorption device comprises a first structural layer and a second structural layer, the first structural layer is fixedly arranged on the rack, the kiln head is sleeved with the first structural layer, the first structural layer is a heat conduction layer, the second structural layer is sleeved on the first structural layer, the second structural layer is a heat insulation layer, and a cavity is formed between the second structural layer and the first structural layer.

Through adopting above-mentioned technical scheme, through the setting of first structural layer, can carry out effectual heat conduction with the heat in the kiln head and handle, through the setting of second structural layer for carry out heat preservation to the heat of collecting and handle, avoid thermal scattering and disappearing.

The present invention may be further configured in a preferred embodiment as: the kiln head is fixedly provided with a plurality of radiating fin plates, and the radiating fin plates are arranged along the circumferential direction of the kiln head.

Through adopting above-mentioned technical scheme, fixed being provided with a plurality of heat dissipation finned plates on kiln head portion, can making the heat of kiln head portion in the use more even, when the heat in the kiln head portion is conducted to needs, can be with the timely heat dissipation of the heat in the kiln head portion simultaneously, conduct through first structural layer, make heat conduction handle more high-efficient.

The present invention may be further configured in a preferred embodiment as: the heat conduction device comprises a first heat conduction pipe, a dust remover and a second heat conduction pipe, wherein the first heat conduction pipe is arranged on the tail part of the kiln, the dust remover is arranged on the first heat conduction pipe, two ends of the first heat conduction pipe are communicated with the tail part of the kiln and the dust remover respectively, the second heat conduction pipe is arranged on the dust remover, and two ends of the second heat conduction pipe are communicated with the dust remover and the heat collection tank respectively.

Through adopting above-mentioned technical scheme, retrieve through the tail gas of a pair of kiln afterbody of heat pipe, the tail gas of retrieving removes dust through dust remover gas and handles, avoids the dust can cause the pollution to water, through the setting of heat pipe two, can conduct the thermal-arrest jar in with the tail gas that the dust removal was handled and is accomplished.

The present invention may be further configured in a preferred embodiment as: be provided with first filter and second filter in the dust remover, first filter and second filter are all fixed on the inner wall that is provided with the dust remover, set up corrugated filtration pore on first filter and the second filter, and corrugated filtration pore on the first filter and the corrugated filtration pore on the second filter staggered arrangement in vertical direction.

Through adopting above-mentioned technical scheme, carry out preliminary filtration to tail gas through first filter, carry out the secondary through the second filter and filter, make the dirt filtering effect of tail gas better, when tail gas passes through the ripple filtration pore, the dust can be intercepted by the ripple filtration pore, and the dust can carry out abundant contact with the second filter simultaneously to make the second filter better to the filter effect of tail gas.

The present invention may be further configured in a preferred embodiment as: the water inlet pipe and the water outlet pipe are respectively arranged at two ends of the second structure layer in a penetrating mode, two ends of the water outlet pipe are respectively communicated with the cavity and the heat collecting tank, and the first control valve is arranged on each of the water inlet pipe and the water outlet pipe.

Through adopting above-mentioned technical scheme, let in the cooling water through the inlet tube, carry the thermal-arrest jar through the water of outlet pipe in with the cavity, can make the more convenient cooling water that lets in the cavity, through the break-make of a control valve control inlet tube and outlet pipe, the simple operation.

The present invention may be further configured in a preferred embodiment as: the temperature sensor is fixedly arranged on the heat collection tank, the electromagnetic valve is arranged at the water outlet of the heat collection tank, the temperature sensor is connected with a controller used for controlling the on-off of the electromagnetic valve, the temperature sensor is electrically connected with the controller, and the controller is electrically connected with the electromagnetic valve.

Through adopting above-mentioned technical scheme, the fixed temperature sensor that is provided with on the thermal-arrest jar can carry out temperature detection to the water in the thermal-arrest jar to give the controller with signal transmission, the switching of controller control solenoid valve, thereby can be timely will heat the water of accomplishing and discharge and use, avoid thermal waste.

The present invention may be further configured in a preferred embodiment as: the heat collection tank is provided with an exhaust pipe, and the exhaust pipe is provided with a second control valve.

Through adopting above-mentioned technical scheme, be provided with the blast pipe on the thermal-arrest jar, through opening of control valve two control blast pipes to the realization can avoid the pressure in the thermal-arrest jar too big, causes the influence to the normal use of thermal-arrest jar to the emission of tail gas.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the heat absorption device is arranged at the kiln head part, so that heat in the kiln head part is effectively recovered and is conveyed into the heat collection tank for use, the waste heat collection efficiency is high, and the waste of energy can be reduced;

2. the kiln head part is fixedly provided with the plurality of radiating fin plates, so that the heat of the kiln head part in the using process can be more uniform, meanwhile, when the heat in the kiln head part needs to be conducted, the heat in the kiln head part can be timely radiated, and the heat is conducted through the first structural layer, so that the heat conduction treatment is more efficient;

3. through being provided with first filter and second filter in the dust remover, first filter carries out preliminary filtration to tail gas, carries out the secondary through the second filter and filters, makes the dirt filtering effect of tail gas better, and when tail gas passed through the ripple filtration pore, the dust can be intercepted by the ripple filtration pore, and the dust can carry out abundant contact with the second filter simultaneously to make the second filter better to the filter effect of tail gas.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a partially enlarged view at B in fig. 2.

Reference numerals: 1. a frame; 2. a rotary kiln; 3. a kiln head; 4. the tail part of the kiln; 5. a heat sink; 51. a first structural layer; 52. a second structural layer; 53. a cavity; 6. a heat conducting device; 61. a first heat conduction pipe; 62. a dust remover; 621. a first filter plate; 622. a second filter plate; 623. a corrugated filter hole; 63. a second heat conduction pipe; 7. a heat collection tank; 8. a heat dissipation fin plate; 9. a water inlet pipe; 10. a water outlet pipe; 11. a first control valve; 12. a temperature sensor; 13. an electromagnetic valve; 14. an exhaust pipe; 15. and a second control valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a rotary kiln head waste heat recovery device, including frame 1, rotary kiln 2 of setting in frame 1, set up kiln head 3 on rotary kiln 2 and set up kiln afterbody 4 on rotary kiln 2, rotary kiln 2 and frame 1 normal running fit. Be provided with the heat sink 5 that is used for carrying out the recovery to the heat in the kiln head portion 3 on the frame 1, on kiln head portion 3 was located to the heat sink 5 cover, rotary kiln 2 had a large amount of heats after the use is accomplished, carries out heat conduction through heat sink 5 with kiln head portion 3 and handles. The heat absorber 5 is obliquely arranged, and the vertical height of one end of the heat absorber 5 far away from the kiln tail 4 is higher than that of one end of the heat absorber 5 close to the kiln tail 4. The kiln tail 4 is provided with a heat conduction device 6 for recovering tail gas at the kiln tail 4, and the tail gas at the kiln tail 4 is recovered. One side of the frame 1 is provided with a heat collecting tank 7, water to be heated is arranged in the heat collecting tank 7, and the heat absorbing device 5 and the heat conducting device 6 are communicated with the heat collecting tank 7. The heat absorbing device 5 and the heat conducting device 6 are used for carrying water to be heated in the heat collecting tank 7 after heat is recovered, the waste heat collecting efficiency of the waste heat recovery device is high, and the waste of energy can be reduced.

Referring to fig. 2 and 3, the heat sink 5 includes a first structural layer 51 and a second structural layer 52, the first structural layer 51 is fixedly disposed on the frame 1, and the first structural layer 51 is sleeved on the kiln head 3, the first structural layer 51 is a heat conducting layer, and the first structural layer 51 may be made of a heat conducting copper plate for conducting heat conducting treatment effectively on heat in the kiln head 3. The second structural layer 52 is sleeved on the first structural layer 51, and the second structural layer 52 is a heat insulating layer for performing heat insulating treatment on the collected heat to avoid heat dissipation. A cavity 53 is formed between the second structural layer 52 and the first structural layer 51, and is used for storing cooling water and absorbing heat conducted by the first structural layer 51, and because the vertical height of one end of the heat absorber 5 far away from the kiln tail 4 is higher than that of one end of the heat absorber 5 close to the kiln tail 4, the cooling water can convey the heat of the first structural layer 51 into the heat collection tank 7 after absorbing the heat.

Referring to fig. 2 and 3, for the heat of kiln head portion 3 in the use is more even, when the heat in kiln head portion 3 needs to be conducted, the timely heat dissipation of the heat in kiln head portion 3 can be realized, the heat is conducted through first structural layer 51, the heat conduction treatment is more efficient, a plurality of heat dissipation fins 8 are fixedly arranged on kiln head portion 3, heat dissipation fins 8 are arranged along the circumferential direction of kiln head portion 3, the waste heat of kiln head portion 3 is subjected to heat dissipation treatment, and the efficient heat conduction treatment is performed through first structural layer 51.

Referring to fig. 1 and 2, heat in the kiln head 3 is recovered, and the exhaust gas from the kiln tail 4 is recovered. The heat conduction device 6 comprises a first heat conduction pipe 61, a dust remover 62 and a second heat conduction pipe 63, the first heat conduction pipe 61 is arranged on the kiln tail part 4, the dust remover 62 is arranged on the first heat conduction pipe 61, two ends of the first heat conduction pipe 61 are respectively communicated with the kiln tail part 4 and the dust remover 62, the tail gas is conveyed through the first heat conduction pipe 61, and the tail gas is conveyed into the dust remover 62 for dust removal treatment. The second heat pipe 63 is disposed on the dust remover 62, the second heat pipe 63 is disposed below the first heat pipe 61, and two ends of the second heat pipe 63 are respectively communicated with the dust remover 62 and the heat collecting tank 7. The second heat conduction pipe 63 is used for conducting the tail gas subjected to dust removal treatment into the heat collection tank 7, and heating water to be heated in the heat collection tank 7.

Referring to fig. 2 and 3, a first filter plate 621 and a second filter plate 622 are disposed in the dust remover 62, and the first filter plate 621 and the second filter plate 622 are both fixedly disposed on the inner wall of the dust remover 62. Carry out preliminary filtration to tail gas through first filter 621, carry out the secondary through second filter 622 after the filtration is accomplished, make the dirt effect of straining of tail gas better. The corrugated filtering holes 623 are formed in the first filtering plate 621 and the second filtering plate 622, so that when tail gas passes through the corrugated filtering holes 623, dust can be intercepted by the corrugated filtering holes 623, and the corrugated filtering holes 623 in the first filtering plate 621 and the corrugated filtering holes 623 in the second filtering plate 622 are arranged in a staggered mode in the vertical direction. Make the tail gas that moves to the second 63 of heat conduction pipe filter the completion back at first filter 621, carry out abundant contact with second filter 622 to make the second filter 622 better to the filter effect of tail gas.

Referring to fig. 1 and 3, in order to more conveniently introduce cooling water into the cavity 53, a water inlet pipe 9 and a water outlet pipe 10 are respectively arranged at two ends of the second structural layer 52 in a penetrating manner, the cooling water is introduced through the water inlet pipe 9, two ends of the water outlet pipe 10 are respectively communicated with the cavity 53 and the heat collection tank 7, and the water in the cavity 53 is conveyed into the heat collection tank 7 through the water outlet pipe 10. The water inlet pipe 9 and the water outlet pipe 10 are both provided with a control valve I11 for controlling the on-off of the water inlet pipe 9 and the water outlet pipe 10.

Referring to fig. 1 and 2, a temperature sensor 12 is fixedly provided on the heat collection tank 7 for effective temperature detection of hot water in the heat collection tank 7. An electromagnetic valve 13 is arranged at the water outlet of the heat collection tank 7 and used for controlling the on-off of the water outlet of the heat collection tank 7. The temperature sensor 12 is connected with a controller for controlling the on-off of the electromagnetic valve 13, the temperature sensor 12 is electrically connected with the controller, and the controller is electrically connected with the electromagnetic valve 13. When the temperature sensor 12 detects that the hot water in the heat collection tank 7 reaches a certain temperature, the water is discharged in time and used, the temperature sensor 12 transmits a signal to the controller, and after the controller receives the signal, the electromagnetic valve 13 is controlled to be opened to discharge the water for subsequent use.

Referring to fig. 1 and 2, after a certain amount of tail gas is introduced into the heat collection tank 7, in order to avoid that the pressure intensity in the heat collection tank 7 is too high and influences the normal use of the heat collection tank 7, an exhaust pipe 14 is arranged on the heat collection tank 7, and a second control valve 15 is arranged on the exhaust pipe 14. The opening of the exhaust pipe 14 is controlled by the second control valve 15, so that the exhaust emission is realized.

The implementation principle of the embodiment is as follows: rotary kiln 2 has a large amount of heats after the use is accomplished, carry out heat conduction treatment with kiln head portion 3 through heat sink 5, carry out effectual heat conduction treatment through the heat of first structural layer 51 in with kiln head portion 3, open control valve 11, let in the cooling water in the inlet tube 9, absorb the heat that first structural layer 51 conducts, open control valve 11, make outlet pipe 10 open, in heat conduction heat collection tank 7, heat preservation treatment is carried out to the heat in the cavity 53 through second structural layer 52. When heat in the kiln head part 3 is recovered, tail gas of the kiln tail part 4 is recovered through the first heat conduction pipe 61, and after the tail gas is dedusted by the deduster 62, the tail gas enters the heat collection tank 7 through the second heat conduction pipe 63 to heat water in the heat collection tank 7.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a rotary kiln head waste heat recovery device, includes frame (1), sets up rotary kiln (2) in frame (1), sets up kiln head portion (3) on rotary kiln (2) and sets up kiln afterbody (4) on rotary kiln (2), rotary kiln (2) and frame (1) normal running fit, its characterized in that, be provided with heat sink (5) that are used for carrying out the heat recovery in kiln head portion (3) in frame (1), on kiln head portion (3) were located to heat sink (5) cover, be provided with heat-transfer device (6) that are used for carrying out the tail gas of retrieving kiln afterbody (4) department on kiln afterbody (4), one side of frame (1) is provided with heat collection jar (7), heat sink (5) and heat-transfer device (6) all communicate with heat collection jar (7).

2. The rotary kiln head waste heat recovery device according to claim 1, wherein the heat absorbing device (5) comprises a first structural layer (51) and a second structural layer (52), the first structural layer (51) is fixedly arranged on the frame (1), the kiln head (3) is sleeved with the first structural layer (51), the first structural layer (51) is a heat conducting layer, the first structural layer (51) is sleeved with the second structural layer (52), the second structural layer (52) is a heat insulating layer, and a cavity (53) is formed between the second structural layer (52) and the first structural layer (51).

3. A rotary kiln head waste heat recovery device according to claim 2, characterized in that a plurality of heat dissipation fins (8) are fixedly arranged on the kiln head (3), and the heat dissipation fins (8) are arranged along the circumferential direction of the kiln head (3).

4. The rotary kiln head waste heat recovery device according to claim 3, wherein the heat conducting device (6) comprises a first heat conducting pipe (61), a dust remover (62) and a second heat conducting pipe (63), the first heat conducting pipe (61) is arranged on the kiln tail part (4), the dust remover (62) is arranged on the first heat conducting pipe (61), two ends of the first heat conducting pipe (61) are respectively communicated with the kiln tail part (4) and the dust remover (62), the second heat conducting pipe (63) is arranged on the dust remover (62), and two ends of the second heat conducting pipe (63) are respectively communicated with the dust remover (62) and the heat collecting tank (7).

5. The rotary kiln head waste heat recovery device according to claim 4, characterized in that a first filter plate (621) and a second filter plate (622) are arranged in the dust remover (62), the first filter plate (621) and the second filter plate (622) are both fixedly arranged on the inner wall of the dust remover (62), corrugated filter holes (623) are formed in the first filter plate (621) and the second filter plate (622), and the corrugated filter holes (623) in the first filter plate (621) and the corrugated filter holes (623) in the second filter plate (622) are staggered in the vertical direction.

6. The rotary kiln head waste heat recovery device according to claim 5, wherein a water inlet pipe (9) and a water outlet pipe (10) are respectively arranged at two ends of the second structural layer (52) in a penetrating manner, two ends of the water outlet pipe (10) are respectively communicated with the cavity (53) and the heat collecting tank (7), and a first control valve (11) is respectively arranged on each of the water inlet pipe (9) and the water outlet pipe (10).

7. The rotary kiln head waste heat recovery device according to claim 6, wherein a temperature sensor (12) is fixedly arranged on the heat collection tank (7), an electromagnetic valve (13) is arranged at a water outlet of the heat collection tank (7), a controller for controlling the on-off of the electromagnetic valve (13) is connected to the temperature sensor (12), the temperature sensor (12) is electrically connected with the controller, and the controller is electrically connected with the electromagnetic valve (13).

8. A rotary kiln head waste heat recovery device as claimed in claim 7, characterized in that the heat collecting tank (7) is provided with an exhaust pipe (14), and the exhaust pipe (14) is provided with a second control valve (15).