CN217604117U - Combined two-section rotary kiln type oil-containing dangerous waste heat desorption treatment system - Google Patents
Combined two-section rotary kiln type oil-containing dangerous waste heat desorption treatment system Download PDFInfo
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- CN217604117U CN217604117U CN202220727351.2U CN202220727351U CN217604117U CN 217604117 U CN217604117 U CN 217604117U CN 202220727351 U CN202220727351 U CN 202220727351U CN 217604117 U CN217604117 U CN 217604117U
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Abstract
The application provides a two sections rotary kiln formula of combination contain oily danger waste heat desorption processing system relates to rotary kiln thermal desorption technical field. The utility model provides a two sections rotary kiln formula of combination contain oily danger waste heat desorption processing system, includes the first section rotary kiln, and first section rotary kiln feed inlet is connected to the material export, and the discharge gate is connected to the end section rotary kiln, and the inlayer entry linkage of first section rotary kiln has the nitrogen gas device, and the inlayer export is connected to flue gas circulating device, and the outer entry and the flue gas circulating device of first section rotary kiln are connected, and outer exit linkage flue gas purification device, the kiln head of end section rotary kiln are connected with the oxygen device, and the kiln tail is connected the second combustion chamber. The treatment system has the advantages of low exhaust emission, low energy consumption, heat and water recycling and environmental protection economy.
Description
Technical Field
The application relates to the technical field of rotary kiln thermal desorption, in particular to a combined two-section rotary kiln type oil-containing danger waste heat desorption treatment system.
Background
The industrial production process discharges waste water containing oil substances, wherein the oil substances contained in the waste water contain natural petroleum, petroleum products, tar and fractions thereof, edible animal and vegetable oils and fats; the waste liquid can be discharged only by treatment, the conventional sedimentation treatment method cannot separate oil substances in the waste liquid, most of the conventional devices for treating the oily dangerous waste liquid are mainly oil removal tanks, but the oil removal effect of the oil removal tanks is not ideal, and the method for adding the medicament in the oil removal tanks is to directly add the medicament into a waste liquid pipe.
In recent years, the treatment of hazardous wastes containing oil in large-scale plants also comprises a rotary kiln type incinerator and a rotary kiln type thermal desorption, but the two processes have respective defects, for example, the rotary kiln type incinerator has the defects of high operation energy consumption, large exhaust gas and carbon emission and poor economic benefit, and the rotary kiln type thermal desorption has the defects that: 1. the residue after treatment has high content of harmful substances; 2. the generation of dioxin cannot be controlled within the temperature utilization range of 300-600 ℃; 3. the emission of the non-smoke treatment facility can not be controlled to reach the standard, and the non-smoke treatment facility is not suitable for being used in areas with high smoke emission requirements.
Therefore, for the treatment of hazardous waste containing oil, the development of a treatment system that can solve the above-mentioned disadvantages is of great significance to the industrial environment today.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a two sections rotary kiln formula of combination contain oily danger waste heat desorption processing system, and this system has the advantage that exhaust emission is low, the energy consumption is low, resource cyclic utilization and environmental protection economy.
The embodiment of the application is realized as follows:
the embodiment of the application provides a two sections rotary kiln formula oiliness danger desorption processing system of combination, including the first section rotary kiln, first section rotary kiln feed inlet is connected to the material export, and the discharge gate is connected to the end section rotary kiln, and the inlayer entry linkage of first section rotary kiln has the nitrogen gas device, and the inlayer exit linkage is to flue gas circulating device, and the outer entry and the flue gas circulating device of first section rotary kiln are connected, and outer exit linkage flue gas purification device, the kiln head of end section rotary kiln is connected with the oxygen device, and the kiln tail is connected the second combustion chamber.
In some embodiments of the present application, the flue gas circulation device includes a spray tower, a dehumidification tower and a second combustion chamber, which are connected in sequence, the spray tower is connected to an inner outlet of the first rotary kiln, and the second combustion chamber is connected to an outer inlet of the first rotary kiln.
In some embodiments of the present application, the first-stage rotary kiln is connected to the material outlet and the last-stage rotary kiln by a closed transportation device.
In some embodiments of the present application, the second combustion chamber is connected to a warming burner.
In some embodiments of the present application, the spray tower is further connected to a spray water circulation device.
In some embodiments of the present application, the spray water circulation device includes a circulation water tank, a filter and an air cooler connected in sequence, an inlet of the circulation water tank is connected to a tower kettle outlet of the spray tower, and an outlet of the air cooler is connected to a tower top of the spray tower.
In some embodiments of the present application, the spray water circulation device further includes an oil storage tank connected to the circulation water tank.
In some embodiments of the present application, the above-mentioned flue gas purification device includes a quenching tower, a dry reaction tower, a bag-type dust collector, a desulfurizing tower, a wet electric dust collector and a chimney, which are connected in sequence, and the quenching tower is connected with an outer layer outlet of the first rotary kiln.
In some embodiments of the present application, the outlet of the second combustion chamber is connected to a tapping device.
In some embodiments of the present application, the inlet pipeline of the second combustion chamber is further connected with an ammonia pipeline and an air pipeline.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
the treatment system of the embodiment can remove harmful substances in the oily hazardous waste materials by performing two-stage combined reaction of anaerobic treatment in the first-stage rotary kiln and aerobic treatment in the last-stage rotary kiln, so that the residual amount in the final discharge is greatly reduced, and the harmful removal rate is high; and in this embodiment, first section rotary kiln and end section rotary kiln all need not additionally to set up heating device, and wherein adopt the indirect heat supply of second combustion chamber flue gas to heat the material in the first section rotary kiln, to the radiant heat supply who adopts second combustion chamber in the end section rotary kiln, greatly reduced entire system's energy consumption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic diagram of a processing system according to an embodiment of the present disclosure;
fig. 2 is a second schematic structural diagram of a processing system according to an embodiment of the present application.
Icon: 1-first section rotary kiln; 2-end rotary kiln; 3-a closed conveying device; 4-a spray tower; 5-a dehumidification tower; 6-a second combustion chamber; 7-a warming burner; 8-a quench tower; 9-a dry reaction column; 10-bag dust collector; 11-a desulfurizing tower; 12-a wet electro precipitator; 13-a chimney; 14-a circulating water tank; 15-a filter; 16-an air cooler; 17-an oil storage tank; 18-a kiln body burner; 19-SCR denitration device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present application.
In the description of the embodiments of the present application, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present disclosure.
This embodiment provides a two sections rotary kiln formula oiliness danger desorption processing system of combination, including first section rotary kiln 1, first section rotary kiln 1 feed inlet is connected to the material export, and the discharge gate is connected to end rotary kiln 2, adopts the mode of first section rotary kiln 1 and 2 collocation of end rotary kiln to carry out the combination processing to oiliness danger useless in this embodiment.
The inlayer entry linkage of first section rotary kiln 1 has the nitrogen gas device, and the letting in of nitrogen gas can be so that form hypoxemia even anaerobic space in first section rotary kiln 1, is favorable to carrying out anaerobic heat treatment to oily danger useless. An inner layer outlet of the first-section rotary kiln 1 is connected to a flue gas circulating device, and water vapor and oil vapor generated by the oily hazardous waste materials in the first-section rotary kiln 1 are treated by the flue gas circulating device; the outer layer inlet of the first-section rotary kiln 1 is connected with the flue gas circulating device, the treated high-temperature flue gas enters the first-section rotary kiln 1 to indirectly heat the materials in the first-section rotary kiln 1, and meanwhile, the arrangement of other combustion devices is saved; the outer layer outlet is connected with a flue gas purification device, flue gas after heat exchange enters the flue gas purification device for purification treatment, and the flue gas is discharged after treatment.
The kiln head of the end rotary kiln 2 is connected with an oxygen device for supplying oxygen to the end rotary kiln 2, and the material after anaerobic treatment is subjected to aerobic reaction in the end rotary kiln 2; the kiln tail is connected with a secondary combustion chamber 6, an additional heating device is not needed to be arranged in the tail-section rotary kiln 2, the materials are heated by means of radiation heat generated by the secondary combustion chamber, and the energy consumption of the system can be obviously reduced.
The treatment system of the embodiment can remove harmful substances in the oily hazardous waste materials by carrying out two-stage combined reaction of the first-stage rotary kiln 1 without oxygen and the last-stage rotary kiln 2 with oxygen, so that the residual amount in final discharge is greatly reduced, and the harmful removal rate is high; in addition, in the embodiment, the first-stage rotary kiln 1 and the last-stage rotary kiln 2 do not need to be additionally provided with heating devices, wherein the materials are heated by indirect heat supply of flue gas of the second combustion chamber 6 in the first-stage rotary kiln 1, and the materials are heated by radiation heat supply of the second combustion chamber 6 in the last-stage rotary kiln 1, so that the energy consumption of the whole system is greatly reduced.
Example 2
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The embodiment provides a two sections rotary kiln formula of combination oiliness danger waste heat desorption processing system, and it is the same basically with the thermal desorption processing system that embodiment 1 provided, and the same parts are no longer repeated, and the difference lies in, and flue gas circulating device in this embodiment is including spray column 4, dehumidification tower 5 and the second combustion chamber 6 that connect gradually, and spray column 4 and the first section rotary kiln 1 inlayer exit linkage, and second combustion chamber 6 is connected with the outer entry of first section rotary kiln 1.
In the embodiment, the hazardous waste material is subjected to anaerobic heating reaction in the first rotary kiln 1, so that water and oil in the hazardous waste material containing oil are heated and evaporated into water vapor and oil vapor, and are desorbed with the pollutants; the water vapor and the oil vapor generated in the first section of the rotary kiln 1 enter the spray tower 4, move from bottom to top from the lower end of the spray tower 4 and contact with circulating water from top to bottom, the circulating water in the embodiment adopts alkaline water with the temperature of 50 ℃, and has the effects of cooling and condensing the water vapor and the oil vapor, and simultaneously, the partial non-condensable gas is desulfurized; the condensation part falls to the tower kettle along with the circulating water, the non-condensable gas enters the secondary combustion chamber 6 to be used as heating fuel for combustion, the retention time in the secondary combustion chamber 6 is more than or equal to 2s, the temperature in the secondary combustion chamber 6 is raised to be higher than 1100 ℃, high-temperature flue gas in the secondary combustion chamber 6 enters the outer layer of the first-section rotary kiln 1 to indirectly heat oil-containing dangerous waste materials in the first-section rotary kiln body, meanwhile, heat exchange can be carried out, and the energy waste is reduced.
Example 3
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
This embodiment provides a two sections rotary kiln formula of combination oiliness danger waste heat desorption processing system, and it is the same basically with the thermal desorption processing system that embodiment 1 provided, and the same part is no longer repeated, and the difference lies in, all is connected through airtight conveyer 3 between first section rotary kiln 1 and material export, the end rotary kiln 2 in this embodiment.
In this embodiment, the transportation of material is all transported through airtight conveyer 3, can avoid the noxious material among the oily danger waste material to run out the system in the processing procedure, produces the influence to environment and staff.
Example 4
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The present embodiment provides a combined two-stage rotary kiln type desorption treatment system for oily hazardous waste heat, which is substantially the same as the thermal desorption treatment system provided in embodiment 1, and the same points are not repeated herein, except that the second combustion chamber 6 in the present embodiment is connected to the warming burner 7.
In this embodiment, combustion in secondary chamber 6 is supplied mainly by heating burner 7, and the temperature in secondary chamber 6 can be raised to above 1100 ℃ by heating burner 7 and the flue gas fuel.
Further, as shown in fig. 2, as another embodiment, in this embodiment, a kiln body burner 18 may be further disposed at a kiln head position of the end rotary kiln 2, and used as a compatible incinerator, so as to expand an application range of the system of the present application, that is, the treatment system may be used for not only the treatment of oil-containing hazardous waste materials, but also the treatment of non-oil-containing hazardous waste materials, and when the materials are oil-containing hazardous waste, the kiln body burner 18 does not need to be opened, and only indirect heating of the secondary combustion chamber 6 is performed; when the material is useless for non-oiliness danger, open kiln body combustor 18, the flue gas can bypass and cross spray column 4 and directly enter second combustion chamber 6, the useless volume of danger can be few calorific value also low when the material gets into end rotary kiln 2 and burns, the useless of danger of same quality is dealt with and also can be dwindled relatively the kiln footpath, so same kiln footpath throughput also can be far more than burning furnace, in addition, when this system is used for compatible burning furnace function, need increase SCR denitrification facility 19 before chimney 13, increase the desorption of nitrogen oxide in the flue gas and handle.
Example 5
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The present embodiment provides a combined two-stage rotary kiln type desorption treatment system for oily hazardous waste heat, which is basically the same as the thermal desorption treatment system provided in embodiment 2, and the same points are not repeated herein, except that the spray tower 4 in this embodiment is further connected to a spray water circulation device.
In this embodiment, the water in the spray tower 4 is the water in the spray water circulating device, that is, the spray water after being cooled by the flue gas can reenter the spray tower 4 to work, so that the water resource can be reused.
Example 6
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The embodiment provides a two sections of rotary kiln formula of combination oil-containing danger waste heat desorption processing system, it is the same with the thermal desorption processing system that embodiment 5 provided, and the same parts are no longer repeated, and the difference lies in, the spray water circulating device in this embodiment includes circulating water tank 14, filter 15 and air cooler 16 that connect gradually, and circulating water tank 14's entry is connected with the tower cauldron exit linkage of spray column 4, and the export of air cooler 16 is connected with the top of the tower of spray column 4.
In this embodiment, the liquid that the spray column 4 flowed into the tower cauldron gets into circulation tank 14, be provided with the swash plate in the circulation tank, the slagging-off machinery, charge device and oil removal device for deposit, the slagging-off, the desulfurization and deoiling to liquid, the aqueous phase after above-mentioned processing gets into filter 15 through circulating water pump and filters, the circulating water through filter 15 gets into air cooler 16 and cools down, the circulating water through cooling gets into spray column 4 at last and continues to carry out condensation process to the vapor and the oil vapor that enter into spray column 4, realize the cyclic use of shower water.
Example 7
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present disclosure.
This embodiment provides a two sections rotary kiln formula of combination oiliness danger waste heat desorption processing system, and it is the same basically with the thermal desorption processing system that embodiment 6 provided, and the same parts are no longer repeated, and the difference lies in, the spray water circulating device in this embodiment still includes oil storage tank 17, and oil storage tank 17 is connected with circulation tank 14.
In this embodiment, oil storage tank 17 is arranged in receiving the oil phase that separates among the circulating water tank 14, realizes the recovery to spraying the aquatic oil phase, retrieves through oil phase in circulating water tank 14, has reduced the oil content in entire system flue gas and the steam, and then has realized the deoiling processing to oily dangerous waste material. Meanwhile, the recovered oil phase can be applied to other systems for resource utilization.
Example 8
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The embodiment provides a two sections rotary kiln formula of combination oiliness danger waste heat desorption processing system, and it is the same basically with the thermal desorption processing system that embodiment 1 provided, and the same part is no longer repeated, and the difference lies in, the flue gas purification device in this embodiment is including quench tower 8, dry-type reaction tower 9, sack cleaner 10, desulfurizing tower 11, wet electric dust remover 12 and chimney 13 that connect gradually, and quench tower 8 links to each other with the outer export of first section rotary kiln 1.
In the embodiment, the temperature of the flue gas after heat exchange in the first-stage rotary kiln 1 is reduced to 600 ℃, and the flue gas enters a quenching tower 8 to be rapidly reduced to 200 ℃; then the flue gas enters a dry reaction tower 9, and acid gas and heavy metal in the flue gas are removed by spraying slaked lime and activated carbon; after the flue gas is discharged from the dry reaction tower 9, the flue gas enters a bag-type dust collector 10 to remove most of particulate matters in the flue gas; then the flue gas is added into a desulfurizing tower 11, and the acidic gas in the flue gas is further removed by alkaline water sprayed by the desulfurizing tower 11; the desulfurized flue gas enters a wet electric dust collector 1, and fine particles of the flue gas are removed; the treated flue gas is conveyed to a chimney 13 and is discharged through the chimney 13. The step realizes the purification treatment of the flue gas and reduces the pressure of the flue gas emission to the environment.
Example 9
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The present embodiment provides a combined two-stage rotary kiln type desorption treatment system for oily hazardous waste heat, which is substantially the same as the thermal desorption treatment system provided in embodiment 1, and the same points are not repeated herein, except that the outlet of the secondary combustion chamber 6 in this embodiment is connected to a slag tapping device.
In this embodiment, after the material is subjected to anaerobic heating in the first rotary kiln 1, aerobic heating in the last rotary kiln 2 and combustion in the second combustion chamber 6, the harmful substances in the material are basically removed and discharged from the slag outlet.
Example 10
Referring to fig. 1, fig. 1 is a schematic system diagram according to an embodiment of the present application.
The present embodiment provides a combined two-stage rotary kiln type desorption treatment system for hazardous waste heat containing oil, which is substantially the same as the thermal desorption treatment system provided in embodiment 1, and the same points are not repeated, except that the inlet pipeline of the secondary combustion chamber 6 in the present embodiment is further connected to an ammonia pipeline and an air pipeline.
In this embodiment, ammonia is also introduced into the second combustion chamber 6 to further remove sulfides in the flue gas and the materials, and air is introduced to promote combustion.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a two sections rotary kiln formulas of combination contain oily danger used heat desorption processing system which characterized in that, includes the first section rotary kiln, first section rotary kiln feed inlet is connected to the material export, and the discharge gate is connected to the end section rotary kiln, the inlayer entry linkage of first section rotary kiln has nitrogen device, and inlayer exit linkage to flue gas circulating device, the outer entry of first section rotary kiln with flue gas circulating device connects, outer exit linkage flue gas purification device, the kiln head of end section rotary kiln is connected with oxygen device, and the kiln tail is connected two combustion chambers.
2. The combined two-section rotary kiln type oily hazardous waste heat desorption treatment system as claimed in claim 1, wherein the flue gas circulation device comprises a spray tower, a dehumidification tower and a secondary combustion chamber which are connected in sequence, the spray tower is connected with an inner layer outlet of the first section of rotary kiln, and the secondary combustion chamber is connected with an outer layer inlet of the first section of rotary kiln.
3. The combined two-section rotary kiln type oil-containing dangerous waste heat desorption treatment system as claimed in claim 1, wherein the first-section rotary kiln is connected with the material outlet and the last-section rotary kiln through closed transportation devices.
4. The combined two-stage rotary kiln type oily hazardous waste heat desorption treatment system according to claim 1, wherein the second combustion chamber is connected with a heating burner.
5. The combined two-section rotary kiln type oil-containing hazardous waste heat desorption treatment system according to claim 2, wherein the spray tower is further connected with a spray water circulating device.
6. The combined two-section rotary kiln type oil-containing danger waste heat desorption treatment system as claimed in claim 5, wherein the spray water circulation device comprises a circulation water tank, a filter and an air cooler which are connected in sequence, an inlet of the circulation water tank is connected with a tower kettle outlet of the spray tower, and an outlet of the air cooler is connected with the top of the spray tower.
7. The combined two-stage rotary kiln type oily hazardous waste heat desorption treatment system according to claim 6, wherein the spray water circulation device further comprises an oil storage tank, and the oil storage tank is connected with the circulation water tank.
8. The combined two-section rotary kiln type oil-containing dangerous waste heat desorption treatment system as claimed in claim 1, wherein the flue gas purification device comprises a quench tower, a dry reaction tower, a bag-type dust remover, a desulfurization tower, a wet electric dust remover and a chimney which are connected in sequence, and the quench tower is connected with an outer layer outlet of the first section of rotary kiln.
9. The combined two-stage rotary kiln type oily hazardous waste heat desorption treatment system as claimed in claim 1, wherein the outlet of the secondary combustion chamber is connected to a slag tapping device.
10. The combined two-stage rotary kiln type oil-containing hazardous waste heat desorption treatment system according to claim 1, wherein an ammonia pipeline and an air pipeline are further connected to an inlet pipeline of the secondary combustion chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220727351.2U CN217604117U (en) | 2022-03-30 | 2022-03-30 | Combined two-section rotary kiln type oil-containing dangerous waste heat desorption treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220727351.2U CN217604117U (en) | 2022-03-30 | 2022-03-30 | Combined two-section rotary kiln type oil-containing dangerous waste heat desorption treatment system |
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Effective date of registration: 20230406 Address after: No.205 Wanzikou Road, Liujiagou Town, Penglai District, Yantai City, Shandong Province, 264000 Patentee after: Penglai Rongyang drilling and Mining Environmental Protection Service Co.,Ltd. Address before: 265601 No. 295, Beilinyuan Village, Beigou Town, Penglai City, Yantai City, Shandong Province Patentee before: Li Xianlong |