CN214457549U - Utilize electromagnetic heating's oily sludge pyrolysis system - Google Patents
Utilize electromagnetic heating's oily sludge pyrolysis system Download PDFInfo
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- CN214457549U CN214457549U CN202120371423.XU CN202120371423U CN214457549U CN 214457549 U CN214457549 U CN 214457549U CN 202120371423 U CN202120371423 U CN 202120371423U CN 214457549 U CN214457549 U CN 214457549U
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- oily sludge
- oil gas
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Abstract
The utility model provides an utilize electromagnetic heating's oily sludge pyrolysis system, mainly by oily sludge feed system, discharge system, pyrolysis machine main part, gear, base and support, oil gas condenser, oil gas thermal oxidation room, electric control system constitute characterized by: the pyrolysis apparatus main part includes rotary drum, electromagnetic induction coil, retaining ring and shell, the one end of pyrolysis apparatus main part is provided with oiliness mud charge-in system, and the other end of pyrolysis apparatus main part is provided with discharge system, rotary drum outer wall winding electromagnetic induction coil. The utility model discloses an electromagnetic heating provides the heat for the pyrolysis of oily mud, and the thermal efficiency is high, and under keeping equal cylinder size condition, heat transfer coefficient improves about 8 times. The waste heat of high-temperature flue gas is not generated, the energy waste is greatly reduced, most of oil products can be recycled by condensing the oil gas after pyrolysis, and the noncondensable gas is cleanly discharged after thermal oxidation, so that the device has the advantages of high efficiency, energy saving and environmental protection.
Description
Technical Field
The utility model relates to an environmental protection technology field specifically is an utilize electromagnetic heating's oily sludge pyrolysis system.
Background
The oily sludge comes from the crude oil exploitation process, oil sludge is generated due to the reasons of well drilling, operation, well repairing, oil extraction, gathering, storage and the like and the accident leakage of equipment pipelines, a large amount of oily waste residues are generated by inclined plate oil separation when the oily sewage is treated, and a large amount of tank bottom sludge is settled in an oil extraction storage tank. The oily sludge is recorded as a dangerous waste by national dangerous waste names, and the main particularity is that the oily sludge is inflammable and explosive, and has high water content and oil content. At present, the main flow technology for treating the oily sludge is pyrolysis, and fuels such as natural gas or propane are mostly adopted to indirectly heat the oily sludge so as to ensure the safety of oil gas in an anoxic environment. The indirect heating mode is that the heat is transferred to the wall of the drum by high-temperature flue gas combusted by gas, and then is transferred to materials by the wall of the rotary drum, the heat transfer efficiency is not high, the temperature of the waste flue gas discharged outwards is as high as 600-800 ℃, and the waste flue gas is difficult to be effectively utilized.
From the analysis of heat transfer science, the heat transfer bottleneck of the indirect heating mode is that the heat transfer resistance of the gas wall at the high-temperature flue gas side is too large, compared with the heat conduction resistance of the drum wall and the heat exchange resistance of the material wall at the material side, the difference is an order of magnitude, and the means for increasing the heat exchange coefficient of the gas side through the traditional turbulent flow and turbulence is very limited. It is known that electromagnetic heating is known to be efficient and free of carbon emission, and a link of side heat exchange of flue gas is directly omitted, so that the problems can be effectively solved, but the electromagnetic heating is used for pyrolyzing the oil-containing sludge, so that the method is blank at present.
To the above current situation, the utility model provides an utilize electromagnetic heating's oily sludge pyrolysis system.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned weak point to provide an utilize electromagnetic heating's oily sludge pyrolysis system, adopt electromagnetic heating to provide the heat for the pyrolysis of oily sludge, the thermal efficiency is high, and is safe, and most oil can be retrieved through the condensation to oil gas after the pyrolysis, and noncondensable gas is clean after thermal oxidation and is discharged, has energy-efficient environmental protection's advantage.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an utilize electromagnetic heating's oily sludge pyrolysis system, mainly by oily sludge feed system, discharge system, pyrolysis machine main part, gear, base and support, oil gas condenser, oil gas thermal oxidation room, electric control system constitute characterized by: the pyrolysis apparatus main part includes rotary drum, electromagnetic induction coil, retaining ring and shell, the one end of pyrolysis apparatus main part is provided with oily mud feed system, and the other end of pyrolysis apparatus main part is provided with discharge system, rotary drum outer wall winding electromagnetic induction coil, electromagnetic induction coil and electrical control system electric connection, electromagnetic induction coil outer wall cover have the shell protection, are equipped with the retaining ring in the rotary drum, rotary drum's feed end is equipped with first rotary seal, rotary drum's discharge end is equipped with second rotary seal.
Furthermore, the oily sludge feeding system comprises an oily sludge trough, a conveying system, a vibrating screen, a double-flap valve and a screw pump, wherein the outlet of the oily sludge trough is connected with the conveying system, the lower part of the conveying system is connected with the vibrating screen, the outlet of the vibrating screen is connected with the inlet of the screw pump through the double-flap valve, and the outlet of the screw pump is connected with a first rotary seal.
Further, discharge system includes pyrolysis machine discharge tank, oil gas condenser, oil gas thermal oxidation room, is provided with a feed tank import, pyrolysis sediment export and oil gas export on the pyrolysis machine discharge tank, and a feed tank access connection second rotary seal, oil gas export pass through the import of oil gas pipe connection oil gas condenser, and the import of oil gas condenser is connected through noncondensable gas pipe connection oil gas thermal oxidation room in the export of oil gas condenser, and the export of oil gas thermal oxidation room passes through the flue gas pipe connection aiutage.
Furthermore, the main body of the pyrolysis machine is fixed on the base and the support.
Further, the rotary drum is driven by a gear transmission device to rotate.
Furthermore, a draught fan is arranged on the flue gas pipeline.
Furthermore, the pyrolysis slag outlet is connected with a solid slag collector.
Further, an oil outlet of the oil-gas condenser is connected with an oil recovery device.
The innovative part of the utility model
(1) The electromagnetic heating is applied to the treatment of the oily sludge for the first time. The electromagnetic heating mode is used for replacing the traditional gas flue gas heating mode, the heat transfer efficiency is high, no high-temperature waste heat flue gas is generated, and the electromagnetic heating device is particularly suitable for occasions without gas supply.
(2) The rotary drum is specially designed to adapt to the high water content and oil content of the oil-containing sludge.
The utility model has the advantages that: the electromagnetic heating is adopted to provide heat for the pyrolysis of the oily sludge, the heat efficiency is high, and the heat transfer coefficient is improved by about 8 times under the condition of keeping the same roller size. The waste heat of high-temperature flue gas is not generated, the energy waste is greatly reduced, most of oil products can be recycled by condensing the oil gas after pyrolysis, and the noncondensable gas is cleanly discharged after thermal oxidation, so that the device has the advantages of high efficiency, energy saving and environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the radial structure of the middle rotary drum of the present invention.
Description of reference numerals: 1. the device comprises an oil-containing sludge trough, 2, a conveying system, 3, a vibrating screen, 4, a double-flap valve, 5, a screw pump, 6, a first rotary seal, 7, a gear transmission device, 8, a base and a support, 9, an electrical control system, 10, a shell, 11, an electromagnetic induction coil, 12, a rotary drum, 13, a retainer ring, 14, a pyrolysis machine discharge tank, 15, a pyrolysis slag outlet, 16, a solid slag collector, 17, an oil gas condenser, 18, an oil recovery device, 19, an oil gas thermal oxidation chamber, 20, a draught fan, 21, an exhaust funnel, 22, a second rotary seal, 23, an oil-containing sludge feeding system, 24, a discharge system, 25, a pyrolysis machine main body, 26, a discharge tank inlet, 27, an oil gas outlet, 28, an oil gas pipeline, 29, a non-condensable gas pipeline, 30 and a flue gas pipeline.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2: the utility model relates to an utilize electromagnetic heating's oily sludge pyrolysis system mainly comprises oily sludge charge-in system 23, discharge system 24, pyrolysis machine main part 25, gear 7, base and support 8, oil gas condenser 17, oil gas thermal oxidation room 19, electrical control system 9, characterized by: pyrolysis machine main part 25 includes rotary drum 12, electromagnetic induction coil 11, retaining ring 13 and shell 10, pyrolysis machine main part 25's one end is provided with oily mud charge-in system 23, and pyrolysis machine main part 25's the other end is provided with discharge system 24, rotary drum 12 outer wall winding electromagnetic induction coil 11, electromagnetic induction coil 11 and electrical control system 9 electric connection, 11 outer wall covers of electromagnetic induction coil have the protection of shell 10, is equipped with retaining ring 13 in the rotary drum 12, rotary drum 12's feed end is equipped with first rotary seal 6, rotary drum 12's discharge end is equipped with second rotary seal 22.
The oily sludge feeding system 23 comprises an oily sludge trough 1, a conveying system 2, a vibrating screen 3, a double-flap valve 4 and a screw pump 5, wherein the outlet of the oily sludge trough 1 is connected with the conveying system 2, the lower part of the conveying system 2 is connected with the vibrating screen 3, the outlet of the vibrating screen 3 is connected with the inlet of the screw pump 5 through the double-flap valve 4, and the outlet of the screw pump 5 is connected with a first rotary seal 6.
The main body 25 of the pyrolysis apparatus is fixed on the base and the support 8.
The rotary drum 12 is driven to rotate by the gear transmission device 7.
And the flue gas pipeline 30 is provided with an induced draft fan 20.
The pyrolysis slag outlet 15 is connected with a solid slag collector 16.
And an oil product outlet of the oil gas condenser 17 is connected with an oil product recovery device 18.
The main body of the rotary drum 12 comprises a first rotary seal 6, a second rotary seal 22, a shell 10, an electromagnetic induction coil 11, a rotary drum 12, a retainer ring 13 and the like. The first rotary seal 6 and the second rotary seal 22 are respectively connected to the feeding end and the discharging end of the rotary drum 12, together, an oxygen-poor or oxygen-free environment of the rotary drum 12 is created, and oil gas explosion is prevented. The length-diameter ratio of the rotary drum 12 is 6-9 times to meet the requirement of the pyrolysis time of the oily sludge. The material of the rotary drum 12 is high temperature resistant stainless steel alloy which can resist more than 1000 ℃. The retainer ring 13 is arranged between the middle parts 1/3-1/2 of the rotary drum 12, the height is about 100mm, and the retainer ring is used for controlling the retention time and the stacking height of the oily sludge. The electromagnetic induction coil 11 is wound on the outer wall of the rotary drum 12, and a special high-temperature-resistant cable is adopted, so that the temperature can be resistant to 800 ℃ to meet the requirement of the pyrolysis precipitation temperature of the oil-containing sludge composition, and the temperature is generally below 650 ℃.
The utility model discloses a theory of operation:
oily sludge materials sequentially pass through a conveying system 2, a vibrating screen 3, a double-flap valve 4 and a screw pump 5 from an oily sludge trough 1 to enter a rotary drum 12, are heated therein, most of water and oil gas are heated and evaporated, the evaporated oil and the evaporated oil enter an oil gas condenser 17 through an outlet at the upper part of a discharge tank 14 of a pyrolysis machine to be condensed and recycled most of oil products, non-condensable gas enters an oil gas thermal oxidation chamber 19 to be combusted, and the flue gas is discharged through an induced draft fan 20 and an exhaust funnel 21 after reaching the standard. The residual solid slag enters a solid slag collector 16 or the next step through a pyrolysis slag outlet 15.
The rotary drum 12 adopts electromagnetic heating, is the core of the whole system and is provided with a base, a support 8 and a gear transmission device 7. The outer wall of the rotary drum 12 is wound with an electromagnetic induction coil 11 and is connected with the electric control system 9 and protected by a shell 10. A retainer ring 13 is arranged in the rotary drum 6 to increase the retention time of the materials and control the stacking height of the materials.
Example 1
Taking the example of processing 200kg/h of refined three-sludge, the water content of the material is 85%, the oil content is 5%, the solid content is 10%, and the operation lasts 7000 hours per year. If a traditional partition wall heating type rotary drum is adopted, the design effective length of the rotary drum is 3.712m, the outer diameter of the rotary drum is 0.464m, the height of an original flue is 0.1m, and the wall thickness is 8 mm.
Selecting empirical values of heat transfer coefficients of two sides of the wall surface and the heat transfer coefficient of the wall surface, and calculating to obtain: the total heat transfer coefficient of electromagnetic heating is improved by about 8 times compared with that of gas heating, and 193.28W/(m) is achieved2K), is a very efficient way of heat transfer.
Comparison of total heat transfer coefficient of materials by electromagnetic heating and gas heating
In the above project, if gas heating is adopted, 29.1Nm of natural gas is required to be combusted3H, 178.53KW of heat effectively absorbed by the materials, 78.8KW of heat taken away by high-temperature flue gas waste heat, 96% of heat loss efficiency and 66.5% of total effective thermal efficiency. If electromagnetic heating is adopted, high-temperature flue gas waste heat is not generated, so that 78.8KW heat can be saved, and no extra high-temperature flue gas treatment measures are needed.
Claims (8)
1. The utility model provides an utilize electromagnetic heating's oily sludge pyrolysis system, mainly by oily sludge feed system (23), discharge system (24), pyrolysis machine main part (25), gear (7), base and support (8), oil gas condenser (17), oil gas thermal oxidation room (19), electric control system (9) and constitute characterized by: pyrolysis apparatus main part (25) is including rotary drum (12), electromagnetic induction coil (11), retaining ring (13) and shell (10), the one end of pyrolysis apparatus main part (25) is provided with oiliness mud charge-in system (23), and the other end of pyrolysis apparatus main part (25) is provided with discharge system (24), rotary drum (12) outer wall winding electromagnetic induction coil (11), electromagnetic induction coil (11) and electrical control system (9) electric connection, electromagnetic induction coil (11) outer wall cover have shell (10) protection, are equipped with retaining ring (13) in rotary drum (12), the feed end of rotary drum (12) is equipped with first rotary seal (6), the discharge end of rotary drum (12) is equipped with second rotary seal (22).
2. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 1, wherein: oily sludge feeding system (23) are including oily sludge silo (1), conveying system (2), shale shaker (3), two flap valve (4) and screw pump (5), and the exit linkage conveying system (2) of oily sludge silo (1), the sub-unit connection shale shaker (3) of conveying system (2), and the import of screw pump (5) is connected through two flap valve (4) in the export of shale shaker (3), the exit linkage first rotary seal (6) of screw pump (5).
3. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 1, wherein: discharging system (24) are including pyrolysis machine ejection of compact jar (14), oil gas condenser (17), oil gas thermal oxidation room (19), be provided with ejection of compact jar import (26) on pyrolysis machine ejection of compact jar (14), pyrolysis sediment export (15) and oil gas export (27), second rotary seal (22) are connected in ejection of compact jar import (26), the import of oil gas condenser (17) is connected through oil gas pipeline (28) in oil gas export (27), the import of oil gas thermal oxidation room (19) is connected through noncondensable gas pipeline (29) in the export of oil gas condenser (17), exhaust stack (21) is connected through flue gas pipeline (30) in the export of oil gas thermal oxidation room (19).
4. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 1, wherein: the pyrolysis machine main body (25) is fixed on the base and the support (8).
5. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 1, wherein: the rotary drum (12) is driven by the gear transmission device (7) to rotate.
6. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 3, wherein: and an induced draft fan (20) is arranged on the flue gas pipeline (30).
7. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 3, wherein: the pyrolysis slag outlet (15) is connected with a solid slag collector (16).
8. The system for the pyrolysis of oily sludge by electromagnetic heating according to claim 3, wherein: and an oil product outlet of the oil gas condenser (17) is connected with an oil product recovery device (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371423.XU CN214457549U (en) | 2021-02-17 | 2021-02-17 | Utilize electromagnetic heating's oily sludge pyrolysis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371423.XU CN214457549U (en) | 2021-02-17 | 2021-02-17 | Utilize electromagnetic heating's oily sludge pyrolysis system |
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| Publication Number | Publication Date |
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| CN214457549U true CN214457549U (en) | 2021-10-22 |
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| CN202120371423.XU Active CN214457549U (en) | 2021-02-17 | 2021-02-17 | Utilize electromagnetic heating's oily sludge pyrolysis system |
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- 2021-02-17 CN CN202120371423.XU patent/CN214457549U/en active Active
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