CN219378413U

CN219378413U - Direct soil pollution thermal desorption energy-saving heat preservation device

Info

Publication number: CN219378413U
Application number: CN202320246498.4U
Authority: CN
Inventors: 黄春敏; 商宏华; 李文超
Original assignee: Hangzhou Zhenshang Environment Technology Co ltd
Current assignee: Hangzhou Zhenshang Environment Technology Co ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-07-21
Anticipated expiration: 2033-02-17

Abstract

The utility model relates to the technical field of energy conservation and heat preservation, in particular to direct soil pollution thermal desorption energy-saving heat preservation equipment, which comprises a rotary kiln body, wherein a rotary component is arranged at the bottom end of the rotary kiln body, a kiln hood and a kiln tail smoke chamber are respectively connected at two ends of the rotary kiln body in a rotary mode, a heat preservation cover is sleeved on the outer side of the rotary kiln body, a return pipe is fixedly connected between one end of the heat preservation cover and the kiln tail smoke chamber, an exhaust pipe is fixedly embedded at the other end of the heat preservation cover, the exhaust pipe is communicated with the input end of a cyclone dust collector, high-temperature smoke in the kiln tail smoke chamber can be guided into a gap between the rotary kiln body and the heat preservation cover by the return pipe, the effect of reducing the temperature difference between the interior and exterior of the rotary kiln body can be achieved, the heat loss of the center of the rotary kiln body can be reduced, the heat preservation layer can play the role of reducing the heat loss of the high-temperature smoke, the waste heat of the high-temperature smoke is effectively utilized, and the rotary kiln body can meet the thermal desorption condition more easily.

Description

Direct soil pollution thermal desorption energy-saving heat preservation device

Technical Field

The utility model relates to the technical field of energy conservation and heat preservation, in particular to direct soil pollution thermal desorption energy-saving heat preservation equipment.

Background

Thermal desorption treatment is one of the common technologies for soil remediation, with the enhancement of carbon neutralization and carbon emission consciousness, the energy-saving and heat-preserving problems of thermal desorption remediation are greatly concerned, the highest temperature of a direct thermal desorption rotary kiln body can reach about 650 ℃, system heat dissipation is unavoidable energy loss, and on the other hand, a flue gas treatment system generated by high-temperature desorption is complicated, and the flue gas can reach the emission standard only by cyclone dust removal, secondary combustion chamber, quenching device and cloth bag dust removal;

the thermal desorption process is carried out in the rotary kiln, and because the temperature difference between the inside and the outside of the rotary kiln is extremely large, the higher temperature difference can cause serious temperature loss in the center of the rotary kiln body, even can cause the condition that the center temperature of the rotary kiln body can not reach the reaction condition and the soil desorption is incomplete, the traditional mode adopts the heat preservation material to carry out the thermal insulation effect to the rotary kiln body to a limited extent, and the high-temperature flue gas exhausted from the rotary kiln can also cause the waste of heat energy.

Disclosure of Invention

The utility model aims to provide direct soil pollution thermal desorption energy-saving heat preservation equipment, which solves the technical problems that when pollution detection equipment fails, workers have to ascend to repair or replace the pollution detection equipment, the safety is low, time and labor are wasted, dust is easy to adhere to a protection filter screen when the pollution detection equipment operates, ventilation failure of the pollution detection equipment can occur in the long time, the accuracy of detection data can be influenced, and the maintenance workload of the workers can be increased.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a direct soil pollution thermal desorption energy-saving heat preservation device, includes the rotary kiln body, the gyration subassembly is installed to the bottom of rotary kiln body, the both ends of rotary kiln body rotate respectively and are connected with kiln hood and kiln tail smoke chamber, the heat preservation cover has been cup jointed in the outside of rotary kiln body, fixedly connected with back flow between heat preservation cover one end and the kiln tail smoke chamber, the fixed exhaust pipe that has inlayed of the other end of heat preservation cover, the exhaust pipe is linked together with cyclone's input and is set up.

Further, the outside of heat preservation cover is attached with the heat preservation, the equal fixedly connected with stabilizer blade in downside four corners department of heat preservation cover, the downside middle part of heat preservation cover still is provided with at least one collecting vat, the collecting vat is wide under narrow structure, and its least extreme threaded connection has the end cover.

Further, the top of kiln hood is fixed to be inlayed and is equipped with the lock wind batcher, the below of lock wind batcher just is located kiln hood inner wall fixedly connected with inclined plate that the slope set up, the bottom of inclined plate extends to in the rotary kiln.

Further, a fire-spraying opening is fixedly embedded in the inner wall of one side of the kiln tail smoke chamber, the fire-spraying opening is arranged right opposite to the rotary kiln body, and two kiln doors are hinged to the side wall of the kiln tail smoke chamber below the fire-spraying opening.

Further, the gyration subassembly is including being located the concave type seat of rotary kiln body both ends below, the both ends upside of concave type seat all is provided with the clamp groove, all rotate between the both sides inner wall of clamp groove and inlay and be equipped with the gear, adjacent the meshing is connected with big ring gear between the gear, big ring gear all fixed welding is on the outer wall of rotary kiln body, the equal screw fixation in one side of concave type seat has the motor, the output and the adjacent gear fixed connection of motor.

Further, two limiting rings are fixedly welded on the outer sides of two ends of the rotary kiln body, and the two limiting rings are respectively located on two sides of the side wall of the heat preservation cover.

The beneficial effects are that: this direct soil pollution thermal desorption energy-saving insulation equipment utilizes the back flow can be with the interior high temperature flue gas of kiln tail flue gas leading-in rotary kiln body and the clearance between the heat preservation cover in, can play the effect of reducing the internal and external difference in temperature of rotary kiln, and then realizes the purpose that reduces rotary kiln body center heat loss, has effectively utilized the waste heat of high temperature flue gas for the rotary kiln body satisfies thermal desorption condition more easily.

Drawings

FIG. 1 is a front view of a direct soil contamination thermal desorption energy-saving type thermal insulation device of the present utility model;

FIG. 2 is a side sectional view of a direct soil contamination thermal desorption energy-saving type thermal insulation device of the present utility model;

fig. 3 is a front sectional view of a direct soil pollution thermal desorption energy-saving type heat preservation device of the present utility model.

Reference numeral 1, a rotary kiln body; 11. a limiting ring; 2. a swivel assembly; 21. a concave seat; 22. a clamping groove; 23. a gear; 24. a large toothed ring; 25. a motor; 3. a kiln head cover; 31. a wind locking feeder; 32. a sloping plate; 4. a kiln tail smoke chamber; 41. a flame spraying port; 42. a kiln door; 5. a thermal insulation cover; 51. a return pipe; 52. an exhaust pipe; 53. a heat preservation layer; 54. a support leg; 55. a collection tank; 56. an end cap; 6. a cyclone dust collector.

Detailed Description

The following description is only of the preferred embodiments of the present utility model, and the scope of the present utility model should not be limited to the examples, but should be construed as falling within the scope of the present utility model. It should also be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present utility model are intended to be comprehended within the scope of the present utility model.

Referring to fig. 1 to 3, a direct soil pollution thermal desorption energy-saving heat preservation device comprises a rotary kiln body 1, a rotary component 2 is installed at the bottom end of the rotary kiln body 1, the rotary component 2 comprises concave seats 21 positioned below two ends of the rotary kiln body 1, clamping grooves 22 are formed in the upper sides of two ends of the concave seats 21, gears 23 are rotationally embedded between inner walls of two sides of the clamping grooves 22, large toothed rings 24 are connected between adjacent gears 23 in a meshed manner, the large toothed rings 24 are fixedly welded on the outer wall of the rotary kiln body 1, a motor 25 is fixedly screwed on one side of each concave seat 21, and the output ends of the motors 25 are fixedly connected with adjacent gears 23;

specifically, the two gears 23 are respectively located below two sides of the large toothed ring 24, and can jointly support the large toothed ring 24, the motor 25 drives the gears 23 to rotate, the gears 23 can drive the large toothed ring 24 to rotate, and the large toothed ring 24 can rotate together with the rotary kiln body 1;

specifically, the rotary kiln body 1 is obliquely arranged at a certain angle, and in the unidirectional rotation process of the rotary kiln body 1, the material gradually moves from the kiln head to the kiln tail until falling into the kiln tail smoke chamber 4 for discharging.

Further, two ends of the rotary kiln body 1 are respectively and rotatably connected with a kiln head cover 3 and a kiln tail smoke chamber 4, an air locking feeder 31 is fixedly embedded at the top end of the kiln head cover 3, an inclined plate 32 which is obliquely arranged is fixedly connected below the air locking feeder 31 and positioned on the inner wall of the kiln head cover 3, and the bottom end of the inclined plate 32 extends into the rotary kiln body 1;

specifically, the air locking feeder 31 can control the entering amount of materials in unit time, after the materials fall onto the inclined plate 32, the materials can slide into the rotary kiln body 1, and the uniform material conveying and desorption can be realized by matching with the rotation speed control of the rotary kiln body 1, so that the desorption effect is good.

Further, a fire-spraying opening 41 is fixedly embedded in the inner wall of one side of the kiln tail smoke chamber 4, the fire-spraying opening 41 is arranged opposite to the rotary kiln body 1, and two kiln doors 42 are hinged to the side wall of the kiln tail smoke chamber 4 below the fire-spraying opening 41;

specifically, the flame spraying port 41 is used for conveying a mixture of pulverized coal and air, and the mixture of pulverized coal and air can be combusted after entering the rotary kiln body 1, so that the temperature inside the rotary kiln body 1 is increased.

Further, the outer side of the rotary kiln body 1 is sleeved with a heat insulation cover 5, two limiting rings 11 are fixedly welded on the outer sides of two ends of the rotary kiln body 1, and the two limiting rings 11 are respectively positioned on two sides of the side wall of the heat insulation cover 5;

specifically, the limiting ring 11 plays a role in shielding joints of the rotary kiln body 1 and the heat preservation cover 5, and the rotary kiln body 1 and the heat preservation cover 5 are sealed by adopting a mechanical sealing structure.

Further, an insulation layer 53 is attached to the outer side of the insulation cover 5, supporting legs 54 are fixedly connected to four corners of the lower side of the insulation cover 5, at least one collecting groove 55 is further arranged in the middle of the lower side of the insulation cover 5, the collecting groove 55 is of a structure with a wide upper part and a narrow lower part, and an end cover 56 is connected to the lowest end of the collecting groove in a threaded manner;

specifically, the heat preservation layer 53 is made of aluminum silicate fiber cotton, the thickness is at least 150mm, a 304 stainless steel sheet with the thickness of 0.35mm is wrapped outside, the temperature resistance of the aluminum silicate heat preservation material can reach 1400 ℃ at the highest, and the heat preservation effect is good;

specifically, the collecting tank 55 can collect the impurity that drops in the high temperature flue gas, after the shut down cooling, unscrew the end cover 56, can clear up the impurity that the collecting tank 55 bottom deposited, reduced maintenance cycle and maintenance degree of difficulty.

Further, a return pipe 51 is fixedly connected between one end of the heat preservation cover 5 and the kiln tail smoke chamber 4, an exhaust pipe 52 is fixedly embedded at the other end of the heat preservation cover 5, and the exhaust pipe 52 is communicated with the input end of the cyclone dust collector 6;

specifically, the return pipe 51 is located at the end of the kiln tail smoke chamber 4, and can guide high-temperature smoke to enter the gap between the heat insulation cover 5 and the rotary kiln body 1, so that the temperature difference between the inside and the outside of the kiln tail smoke chamber 4 is reduced, the thermal desorption energy consumption is reduced, and the energy loss is reduced.

Specifically, the cyclone dust collector 6 is sequentially communicated with the secondary combustion chamber, the quenching tower, the bag-type dust collector, the leaching tower and the chimney, and can treat the discharged waste gas so as to meet the environmental protection requirement;

preferably, the inlet direction of the return pipe 51 is tangential to the inner wall of the heat preservation cover 5, so that the flue gas can be guided to be spirally transmitted forwards in the heat preservation cover 5, and the gap between the heat preservation cover 5 and the rotary kiln body 1 is heated uniformly.

This direct soil pollution thermal desorption energy-saving insulation equipment utilizes the back flow can be with the interior high temperature flue gas of kiln tail flue gas leading-in rotary kiln body and the clearance between the heat preservation cover in, can play the effect of reducing the internal and external difference in temperature of rotary kiln, and then realizes the purpose that reduces rotary kiln body center heat loss, has effectively utilized the waste heat of high temperature flue gas for the rotary kiln body satisfies thermal desorption condition more easily.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a direct soil pollution thermal desorption energy-saving heat preservation device, includes rotary kiln body (1), its characterized in that, gyration subassembly (2) are installed to the bottom of rotary kiln body (1), the both ends of rotary kiln body (1) are rotated respectively and are connected with kiln hood (3) and kiln tail smoke chamber (4), heat preservation cover (5) have been cup jointed in the outside of rotary kiln body (1), fixedly connected with back flow (51) between heat preservation cover (5) one end and kiln tail smoke chamber (4), the other end of heat preservation cover (5) is fixed to be inlayed and is equipped with exhaust pipe (52), the input of exhaust pipe (52) and cyclone (6) is linked together and is set up.

2. The direct soil contamination thermal desorption energy-saving type heat preservation device according to claim 1, wherein: the heat preservation cover is characterized in that a heat preservation layer (53) is attached to the outer side of the heat preservation cover (5), supporting legs (54) are fixedly connected to four corners of the lower side of the heat preservation cover (5), at least one collecting groove (55) is further formed in the middle of the lower side of the heat preservation cover (5), the collecting groove (55) is of a structure with a wide upper part and a narrow lower part, and an end cover (56) is connected to the lowest end of the collecting groove in a threaded mode.

3. The direct soil contamination thermal desorption energy-saving type heat preservation device according to claim 1, wherein: the kiln head cover is characterized in that an air locking feeder (31) is fixedly embedded at the top end of the kiln head cover (3), an inclined plate (32) which is obliquely arranged is fixedly connected to the lower side of the air locking feeder (31) and located on the inner wall of the kiln head cover (3), and the bottom end of the inclined plate (32) extends into the rotary kiln body (1).

4. The direct soil contamination thermal desorption energy-saving type heat preservation device according to claim 1, wherein: the inner wall of one side of the kiln tail smoke chamber (4) is fixedly embedded with a fire-spraying opening (41), the fire-spraying opening (41) is arranged right opposite to the rotary kiln body (1), and two kiln doors (42) are hinged to the lower side of the fire-spraying opening (41) and the side wall of the kiln tail smoke chamber (4).

5. The direct soil contamination thermal desorption energy-saving type heat preservation device according to claim 1, wherein: the rotary assembly (2) comprises concave seats (21) located below two ends of a rotary kiln body (1), clamping grooves (22) are formed in the upper sides of the two ends of the concave seats (21), gears (23) are embedded in the inner walls of two sides of the clamping grooves (22) in a rotating mode, big toothed rings (24) are connected between the gears (23) in a meshed mode, the big toothed rings (24) are fixedly welded on the outer walls of the rotary kiln body (1), motors (25) are fixedly screwed to one sides of the concave seats (21), and the output ends of the motors (25) are fixedly connected with the adjacent gears (23).

6. The direct soil contamination thermal desorption energy-saving type heat preservation device according to claim 1, wherein: two limiting rings (11) are fixedly welded on the outer sides of two ends of the rotary kiln body (1), and the two limiting rings (11) are respectively located on two sides of the side wall of the heat preservation cover (5).