CN212018925U - Two-section rotary kiln thermal desorption system for soil remediation - Google Patents
Two-section rotary kiln thermal desorption system for soil remediation Download PDFInfo
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- CN212018925U CN212018925U CN202020478158.0U CN202020478158U CN212018925U CN 212018925 U CN212018925 U CN 212018925U CN 202020478158 U CN202020478158 U CN 202020478158U CN 212018925 U CN212018925 U CN 212018925U
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Abstract
The utility model discloses a two segmentation rotary kiln thermal desorption systems for soil remediation, include: feed arrangement, first rotary kiln, first combustor, cutting piece, material feeding unit, flue gas pipe, second rotary kiln and discharging device, feed arrangement connects first rotary kiln, material feeding unit with flue gas union coupling first rotary kiln with the second rotary kiln, first combustor sets up first rotary kiln is close to feed arrangement one end, the cutting piece sets up keep away from in the first rotary kiln feeding unit one end, discharging device sets up the second rotary kiln is kept away from feeding unit one end. The utility model provides a two segmentation rotary kiln thermal desorption systems for soil restoration cuts and stirs soil through the cutting piece, makes the intensive mixing of hot-air and contaminated soil, has improved thermal desorption efficiency.
Description
Technical Field
The utility model belongs to the technical field of the soil remediation technique and specifically relates to a two segmentation rotary kiln thermal desorption systems for soil remediation.
Background
The harmfulness of soil pollution is that some organic matters pollute the soil and then pollute the atmosphere and water around the soil, and some organic matters or heavy metal pollutants pass through a food chain to have adverse effects on human bodies. The thermal desorption technology is one of effective technologies for repairing the polluted soil, and the thermal desorption technology is used for heating a target pollutant in the polluted soil to be above a boiling point of the target pollutant through direct or indirect heating, and selectively promoting the pollutant to be gasified and volatilized by controlling the system temperature and the material retention time so as to separate and remove the target pollutant from soil particles. The existing rotary kiln thermal desorption system can not realize the sufficient mixing of hot air and polluted soil, the thermal desorption efficiency is lower, and the operation cost of the rotary kiln thermal desorption system is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two segmentation rotary kiln thermal desorption systems for soil remediation to solve the hot air in the rotary kiln thermal desorption system and pollute the problem that can not the intensive mixing of soil, thermal desorption efficiency is lower.
In order to achieve the above object, the utility model provides a two segmentation rotary kiln thermal desorption systems for soil remediation, include: feed arrangement, first rotary kiln, first combustor, cutting piece, material feeding unit, flue gas pipe, second rotary kiln and discharging device, feed arrangement connects first rotary kiln, material feeding unit with flue gas union coupling first rotary kiln with the second rotary kiln, first combustor sets up first rotary kiln is close to feed arrangement one end, the cutting piece sets up keep away from in the first rotary kiln feeding unit one end, discharging device sets up the second rotary kiln is kept away from feeding unit one end.
Optionally, the first rotary kiln comprises: first rotary kiln head, first rotary kiln skid-mounted, the first rotary kiln body and first rotary kiln tail, first rotary kiln body sets up first rotary kiln skid-mounted, first rotary kiln head with first rotary kiln tail sets up respectively first rotary kiln body both ends, feed arrangement with first combustor all sets up on the first rotary kiln head, the cutting piece sets up be close to in the first rotary kiln body first rotary kiln tail one end.
Optionally, the feeding device comprises: feeder hopper, feeding airlock and conveyer belt, the conveyer belt is connected first rotary kiln head with the feeder hopper, the feeding airlock sets up the feeder hopper with between the conveyer belt.
Optionally, the second rotary kiln includes: the rotary kiln comprises a second rotary kiln head, a rotary kiln inner sleeve, a rotary kiln outer sleeve, a second rotary kiln skid-mounted device and a second rotary kiln tail, wherein the rotary kiln inner sleeve penetrates through the rotary kiln outer sleeve and forms a smoke interlayer, the rotary kiln outer sleeve is arranged on the second rotary kiln skid-mounted device, the second rotary kiln head and the second rotary kiln tail are respectively arranged at two ends of the rotary kiln inner sleeve, the feeding device is connected with the first rotary kiln tail and the second rotary kiln head, and the smoke pipe is connected with the first rotary kiln tail and the smoke interlayer.
Optionally, a second burner is arranged on the rotary kiln jacket.
Optionally, the discharging device is arranged on the kiln tail of the second rotary kiln, and a humidifier is arranged at one end of the discharging device, which is far away from the kiln tail of the second rotary kiln.
Optionally, a discharging airlock is arranged between the humidifier and the discharging device.
Optionally, the two-section rotary kiln thermal desorption system for soil remediation further comprises a heat exchanger, and the heat exchanger is connected with the first rotary kiln head and the second rotary kiln tail.
The utility model provides a two segmentation rotary kiln thermal desorption systems for soil remediation, include: feed arrangement, first rotary kiln, first combustor, cutting piece, material feeding unit, flue gas pipe, second rotary kiln and discharging device, feed arrangement connects first rotary kiln, material feeding unit with flue gas union coupling first rotary kiln with the second rotary kiln, first combustor sets up first rotary kiln is close to feed arrangement one end, the cutting piece sets up keep away from in the first rotary kiln feeding unit one end, discharging device sets up the second rotary kiln is kept away from feeding unit one end. The utility model provides a two segmentation rotary kiln thermal desorption systems for soil restoration cuts and stirs soil through the cutting piece, makes the intensive mixing of hot-air and contaminated soil, has improved thermal desorption efficiency.
Drawings
Fig. 1 is a schematic view of a two-stage rotary kiln thermal desorption system for soil remediation according to an embodiment of the present invention.
Wherein: 1-a feed hopper, 2-a feed airlock, 3-a conveyer belt, 4-a first rotary kiln head, 5-a first rotary kiln skid-mounted, 6-a first rotary kiln body, 7-a first burner, 8-a cutting sheet, 9-a first rotary kiln tail, 10-a feeding device, 11-a second rotary kiln head, 12-a second burner, 13-a rotary kiln inner sleeve, 14-a rotary kiln outer sleeve, 15-a second rotary kiln skid-mounted, 16-a second rotary kiln tail, 17-a discharge airlock, 18-a humidifier, 19-a discharge device, 20-a flue gas pipe and 21-a heat exchanger.
Detailed Description
The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. Advantages and features of the present invention will become apparent from the following description and claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Fig. 1 is the utility model relates to an embodiment provides a two segmentation rotary kiln thermal desorption system schematic diagrams for soil restoration, as shown in fig. 1, two segmentation rotary kiln thermal desorption system for soil restoration include: feed arrangement, first rotary kiln, first combustor 7, cutting piece 8, material feeding unit 10, flue gas pipe 20, second rotary kiln and discharging device 19, feed arrangement connects first rotary kiln, material feeding unit 10 with flue gas pipe 20 connects first rotary kiln with the second rotary kiln, first combustor 7 sets up first rotary kiln is close to feed arrangement one end, cutting piece 8 sets up first rotary kiln inner wall just is located keeps away from feed arrangement one end, discharging device 19 sets up the second rotary kiln is kept away from feeding unit 10 one end. The cutting blade 8 is a blade which is arranged on the inner wall of the first rotary kiln and points to the direction of the circle center. The existing rotary kiln thermal desorption system can not realize the sufficient mixing of hot air and polluted soil, and the thermal desorption efficiency is lower. And the utility model discloses in, energy such as first rotary kiln adopts natural gas, diesel oil or biomass fuel to burn at first combustor 7, preheats and is dry to polluting soil, pollutes the soil and contains the moisture evaporation and come out, and the rethread cutting blade 8 cuts and stirs polluted soil, makes polluted soil and hot-air intensive mixing, has improved thermal desorption efficiency.
Referring to fig. 1, the first rotary kiln comprises: first rotary kiln head 4, first rotary kiln sled dress 5, the first rotary kiln body 6 and first rotary kiln tail 9, first rotary kiln body 6 sets up on the first rotary kiln sled dress 5, first rotary kiln head 4 with first rotary kiln tail 9 sets up respectively first rotary kiln body 6 both ends, feed arrangement with first combustor 7 all sets up on the first rotary kiln head 4, cutting piece 8 sets up be close to in the first rotary kiln body 6 first rotary kiln tail 9 one end. The feeding device comprises: feeder hopper 1, feeding airlock 2 and conveyer belt 3, conveyer belt 3 is connected first rotary kiln hood 4 with feeder hopper 1, feeding airlock 2 sets up feeder hopper 1 with between the conveyer belt 3. The second rotary kiln includes: the rotary kiln comprises a second rotary kiln head 11, a rotary kiln inner sleeve 13, a rotary kiln outer sleeve 14, a second rotary kiln skid-mounted device 15 and a second rotary kiln tail 16, wherein the rotary kiln inner sleeve 13 penetrates through the rotary kiln outer sleeve 14 to form a smoke interlayer, the rotary kiln outer sleeve 14 is arranged on the second rotary kiln skid-mounted device 15, the second rotary kiln head 11 and the second rotary kiln tail 16 are respectively arranged at two ends of the rotary kiln inner sleeve 13, a feeding device 10 is connected with the first rotary kiln tail 9 and the second rotary kiln head 11, and a smoke pipe 20 is connected with the first rotary kiln tail 9 and the smoke interlayer. The first rotary kiln is used for burning natural gas, diesel oil or biomass fuel and other energy sources in a first burner 7 to generate high-temperature flue gas at 800-1200 ℃, the high-temperature flue gas enters a flue gas interlayer through a flue gas pipe 20, the high-temperature flue gas heats an inner sleeve 13 of the rotary kiln in the flue gas interlayer to indirectly heat the polluted soil, the polluted soil is further heated to a thermal desorption temperature in the inner sleeve 13 of the rotary kiln, and organic matters or mercury contained in the polluted soil are heated to a boiling point and separated out in a steam mode. First rotary kiln and second rotary kiln all set up on sled dress structure, and sled dress structure can convenient transportation and installation. The rotary kiln adopts a horizontal structure, so that the occupied space is saved, the slag is discharged from the bottom, and a water cooling device is arranged at the bottom. The inner wall of the rotary kiln is made of refractory materials, so that the service life of the kiln body is prolonged. The sealing device for the kiln head and the kiln tail of the rotary kiln adopts a stainless steel 304 scale elastic sheet, and uses a labyrinth type and scale cooperative sealing to ensure the sealing effect.
Referring to fig. 1, a second burner 12 is disposed on the rotary kiln jacket 14, and the second burner 12 is an auxiliary burner for maintaining the temperature of the high-temperature flue gas. The discharging device 19 is arranged on the kiln tail 16 of the second rotary kiln, a humidifier 18 is arranged at one end, far away from the kiln tail 16 of the second rotary kiln, of the discharging device 19, and a discharging air lock 17 is arranged between the humidifier 18 and the discharging device 19.
Referring to fig. 1, the two-section rotary kiln thermal desorption system for soil remediation further comprises a heat exchanger 21, the heat exchanger is connected with the first rotary kiln head 4 and the second rotary kiln tail 16, desorbed pollutant-containing gas enters the heat exchanger 21 after being combusted in the second combustion chamber, dust-containing high-heat tail gas after heat exchange sequentially enters the cyclone dust collector and the bag-type dust collector for dust removal, clean tail gas after dust removal is discharged through the induced draft fan, and fresh air blown into the heat exchanger returns to the combustor 7 after heat exchange and is used as combustion-supporting hot air.
To sum up, the embodiment of the utility model provides an among the soil restoration uses two segmentation rotary kiln thermal desorption systems, soil restoration includes with two segmentation rotary kiln thermal desorption systems: feed arrangement, first rotary kiln, first combustor, cutting piece, material feeding unit, flue gas pipe, second rotary kiln and discharging device, feed arrangement connects first rotary kiln, material feeding unit with flue gas union coupling first rotary kiln with the second rotary kiln, first combustor sets up first rotary kiln is close to feed arrangement one end, the cutting piece sets up keep away from in the first rotary kiln feeding unit one end, discharging device sets up the second rotary kiln is kept away from feeding unit one end. The utility model provides a two segmentation rotary kiln thermal desorption systems for soil restoration cuts and stirs soil through the cutting piece, makes the intensive mixing of hot-air and contaminated soil, has improved thermal desorption efficiency.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (8)
1. The utility model provides a two segmentation rotary kiln thermal desorption system for soil remediation which characterized in that includes: feed arrangement, first rotary kiln, first combustor, cutting piece, material feeding unit, flue gas pipe, second rotary kiln and discharging device, feed arrangement connects first rotary kiln, material feeding unit with flue gas union coupling first rotary kiln with the second rotary kiln, first combustor sets up first rotary kiln is close to feed arrangement one end, the cutting piece sets up keep away from in the first rotary kiln feeding unit one end, discharging device sets up the second rotary kiln is kept away from feeding unit one end.
2. The two-stage rotary kiln thermal desorption system for soil remediation of claim 1, wherein the first rotary kiln comprises: first rotary kiln head, first rotary kiln skid-mounted, the first rotary kiln body and first rotary kiln tail, first rotary kiln body sets up first rotary kiln skid-mounted, first rotary kiln head with first rotary kiln tail sets up respectively first rotary kiln body both ends, feed arrangement with first combustor all sets up on the first rotary kiln head, the cutting piece sets up be close to in the first rotary kiln body first rotary kiln tail one end.
3. The two-stage rotary kiln thermal desorption system for soil remediation according to claim 2, wherein the feeding device comprises: feeder hopper, feeding airlock and conveyer belt, the conveyer belt is connected first rotary kiln head with the feeder hopper, the feeding airlock sets up the feeder hopper with between the conveyer belt.
4. The two-stage rotary kiln thermal desorption system for soil remediation of claim 2, wherein the second rotary kiln comprises: the rotary kiln comprises a second rotary kiln head, a rotary kiln inner sleeve, a rotary kiln outer sleeve, a second rotary kiln skid-mounted device and a second rotary kiln tail, wherein the rotary kiln inner sleeve penetrates through the rotary kiln outer sleeve and forms a smoke interlayer, the rotary kiln outer sleeve is arranged on the second rotary kiln skid-mounted device, the second rotary kiln head and the second rotary kiln tail are respectively arranged at two ends of the rotary kiln inner sleeve, the feeding device is connected with the first rotary kiln tail and the second rotary kiln head, and the smoke pipe is connected with the first rotary kiln tail and the smoke interlayer.
5. The two-stage rotary kiln thermal desorption system for soil remediation as claimed in claim 4 wherein a second burner is provided on the rotary kiln jacket.
6. The two-stage rotary kiln thermal desorption system for soil remediation according to claim 4, wherein the discharging device is arranged on the kiln tail of the second rotary kiln, and a humidifier is arranged at one end of the discharging device, which is far away from the kiln tail of the second rotary kiln.
7. The two-stage rotary kiln thermal desorption system for soil remediation according to claim 6, wherein a discharge airlock is arranged between the humidifier and the discharge device.
8. The two-stage rotary kiln thermal desorption system for soil remediation according to claim 4, further comprising a heat exchanger, wherein the heat exchanger is connected with the first rotary kiln head and the second rotary kiln tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020478158.0U CN212018925U (en) | 2020-04-03 | 2020-04-03 | Two-section rotary kiln thermal desorption system for soil remediation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020478158.0U CN212018925U (en) | 2020-04-03 | 2020-04-03 | Two-section rotary kiln thermal desorption system for soil remediation |
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| CN212018925U true CN212018925U (en) | 2020-11-27 |
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| CN202020478158.0U Active CN212018925U (en) | 2020-04-03 | 2020-04-03 | Two-section rotary kiln thermal desorption system for soil remediation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405356A (en) * | 2021-06-17 | 2021-09-17 | 陈崇学 | Folding type connected laterite-nickel ore reduction smelting rotary kiln |
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2020
- 2020-04-03 CN CN202020478158.0U patent/CN212018925U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405356A (en) * | 2021-06-17 | 2021-09-17 | 陈崇学 | Folding type connected laterite-nickel ore reduction smelting rotary kiln |
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