CN207738704U - Equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat - Google Patents
Equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat Download PDFInfo
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- CN207738704U CN207738704U CN201721818882.8U CN201721818882U CN207738704U CN 207738704 U CN207738704 U CN 207738704U CN 201721818882 U CN201721818882 U CN 201721818882U CN 207738704 U CN207738704 U CN 207738704U
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Abstract
The utility model discloses a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heats, and equipment is desorbed, it is integrated into the main sled of thermal desorption including oil-contained drilling cuttings feeding system, double helix electromagnetic heating push thermal desorption system, de-oiling drilling cuttings air cooling system and de-oiling drilling cuttings blanking system, oil gas condensation recovery system, fixed gas ultraviolet nanometer photolysis system, oil recovery and sewage disposal system are integrated into thermal desorption pair sled, and control system integration is prized in order to control.The utility model uses electromagnetic heating technique, and energy-efficient suitable offshore platform application, occupation area of equipment is smaller, and generally skid designs, convenience in transport and lifting.The vacancy of marine oil-containing, hydrocarbons pollutant treatment technology, equipment is filled up in the use of the utility model device, improves offshore oilfield capability of environmental protection, makes high energy, efficient, height automation offshore oilfield environmental protection industry.
Description
Technical field
The utility model is related to machinery equipment field more particularly to a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination are discarded
Object thermal desorption equipment.
Background technology
With the high speed development of petroleum industry, generates more and more be drilled well oil-containing, hydrocarbon contamination waste therewith.One
The country is drilled well oil-containing, hydrocarbon contamination waste and is mainly handled by environmental protection treatment factory with recycling since straight, and thermal desorption is set
Standby application can be directed to and be drilled well oil-containing, hydro carbons waste carries out special disposal, not change base oil property and brill after processing
In bits oil content be less than 1%, meet oil-containing discharge standard in national environmental protection method, effectively to oil-containing, hydro carbons waste at
It manages and effectively recycling base oil recycles.
State inland basin has begun using oil-containing, hydrocarbon contamination castoff heat desorption equipment, but due to equipment volume at present
The limitation of excessive and marine processing environment, is not suitable for marine processing.It is drilled well oil-containing, hydro carbons waste on the spot to reach sea
Processing and environment protection emission requirement, reduce processing cost, improve sea and are drilled well green technology ability, break tradition recovery processing
Drawback designs and works out the thermal desorption device of a set of suitable operation on the sea environment, and meeting sea, to be drilled well oil-containing, hydro carbons discarded
Object treatment in situ and environment protection emission require to be very important.
Utility model content
In order to solve the problems in the existing technology, the utility model provides a kind of electromagnetic heating sea oil-containing, hydro carbons
Pollute castoff heat and equipment be desorbed, overcome in the prior art marine oil-containing, hydrocarbons pollutant processing equipment volume is excessive, is not suitable for
The problem of sea processing.
The technical solution of the utility model is：Equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat,
By oil-contained drilling cuttings feeding system, double helix electromagnetic heating push thermal desorption system, de-oiling drilling cuttings air cooling system, de-oiling drilling cuttings blanking
System, oil gas condensation recovery system, fixed gas ultraviolet nanometer photolysis system, oil recovery and sewage disposal system, control system
Composition；The oil-contained drilling cuttings feeding system, double helix electromagnetic heating push thermal desorption system, de-oiling drilling cuttings air cooling system and de-oiling
Drilling cuttings blanking system is integrated into the main sled of thermal desorption, the oil gas condensation recovery system, fixed gas ultraviolet nanometer photolysis system, sump oil
Recycling is integrated into thermal desorption pair sled with sewage disposal system, and control system integration is prized in order to control.
The oil-contained drilling cuttings feeding system, is made of feeding spiral and feeding gas lock, and the feeding spiral includes motor, subtracts
Fast machine, hopper, the auger conveyor with pre- thermal jacket, the motor are connected with speed reducer, speed reducer with pre- thermal jacket
Auger conveyor is connected, and hopper is mounted on the auger conveyor with pre- thermal jacket, and feeding gas lock, which is set to, leads to helical feed
On the pipeline of device.
The double helix electromagnetic heating pushes thermal desorption system, including motor, deceleration system and the double helix being sequentially connected
Axis is equipped with electromagnetic heating system in the double-screw shaft, and double-screw shaft is set to enclosure interior.
The de-oiling drilling cuttings blanking system, including the motor, speed reducer and the discharging spiral shell with air-cooled chuck that are sequentially connected
Conveyer is revolved, the discharging auger conveyor with air-cooled chuck is respectively arranged below cooling blower and blanking gas lock.
Equipment is desorbed in the electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat, which is characterized in that the de-oiling is bored
Consider air cooling system to be worth doing, including air blower, the air-cooled chuck being sequentially connected, air-cooled chuck is located at outside discharging auger conveyor.
Equipment is desorbed in the electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat, which is characterized in that the oil gas is cold
Condensation reclaiming system, including the high-temperature oil gas pipeline, the air cooling heat exchanger with cooling blower, wind turbine, the fixed gas that are sequentially connected are purple
High-temperature oil gas is drawn into air cooling heat exchanger and condensed by outer nanometer photolysis system, wind turbine, and fixed gas is sent into fixed gas ultraviolet nanometer
Photolysis system is handled.
Equipment is desorbed in the electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat, which is characterized in that the fixed gas
Ultraviolet nanometer photolysis system, including the wind turbine, light quantum decomposer, the activated carbon adsorption filter that are sequentially connected, fixed gas is through wind
Machine is sent into light quantum decomposer, while introducing fresh air and on-condensible gas is carried out catalysis oxidation, and tail gas is carried out by activated carbon
Further purification.
Equipment is desorbed in the electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat, which is characterized in that the sump oil returns
Receive and sewage disposal system, including be sequentially connected sump oil water tank, centrifugal oil pump, centrifugal water pump, electrocatalytic oxidation sewage disposal
Device, sump oil water upper layer sump oil after the sedimentation of sump oil water tank are evacuated to oil tank through centrifugal oil pump, and sewage is evacuated to electro-catalysis through centrifugal water pump
It aoxidizes apparatus for treating sewage and carries out sewage disposal.
Equipment is desorbed in the electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat, which is characterized in that the control is
System, including computer and control software, electromagnetic heating controller, PLC, frequency converter, temperature sensor, liquid level sensor, control electricity
Brain running control software, the rotating speed through PLC and Frequency Converter Control motor, electromagnetic heating controller control heating coil temperature and
To PLC and control computer, control computer can be right for power, temperature sensor and liquid level sensor reponse system temperature and liquid level information
The parameter of system is set.
The beneficial effects of the utility model are：The utility model uses electromagnetic heating technique, energy-efficient suitable marine flat
Platform application, occupation area of equipment is smaller, and generally skid designs, convenience in transport and lifting.The use of the utility model device is filled out
Mend the vacancy of marine oil-containing, hydrocarbons pollutant treatment technology, equipment, improve offshore oilfield capability of environmental protection, make high energy, efficiently,
Height automation offshore oilfield environmental protection industry.
Description of the drawings
Fig. 1 is the utility model device flow diagram；
Fig. 2 is the utility model feeding system structural schematic diagram；
Fig. 3 is that the utility model double helix electromagnetic heating pushes thermal desorption system structural schematic diagram；
Fig. 4 is the utility model blanking system structural schematic diagram；
Wherein：1-feeding spiral；2-feeding gas locks；3-double helix electromagnetic heatings push thermal desorption system；4-is automatic
Valve one；5-steam generators；6-automatic valves two；7- blanking spirals；8- blanking gas locks；9- axis air-coolers；10- pipelines one；11-
Pipeline two；12- condensers；13- axial flow blowers；14- three phases separators；15- suction pumps；16- pipelines three；17- liquid levels
Meter one；18- liquid level gauges two；19- electrochemical treaters；20- oil drain pumps one；21- draining pumps；22- pipelines four；23- wind turbines；24-
Light quantum decomposer；25- oil drain pumps two；26- motors two；27- double-screw shafts；28- shells；29- electromagnetic heating systems；31- electricity
Machine one；30- speed reducers one；32- hoppers；Auger conveyors of the 33- with pre- thermal jacket；Auger conveyors of the 34- with air-cooled chuck；
35- motors three；36- speed reducers two；37-- speed reducers three；The main sled of Q1- thermal desorptions；Q2- thermal desorption pairs are prized.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
The utility model electromagnetic heating sea oil-containing, hydro carbons waste pollutant thermal desorption are to use indirect heat exchange mode will
Organic pollution materials are heated to sufficiently high temperature, the process for making it evaporate and being separated from contaminated medium, oil gas warp
Oil recycling, water reuse after treatment or discharge after condensation.
The utility model thermal desorption processing equipment is mainly by the main sled Q1 of thermal desorption (including oil-contained drilling cuttings feeding system, double spiral shells
Revolve electromagnetic heating push thermal desorption system, de-oiling drilling cuttings air cooling system and de-oiling drilling cuttings blanking system), thermal desorption pair sled (including
Oil gas condensation recovery system, fixed gas ultraviolet nanometer photolysis system, oil recovery and sewage disposal system), thermal desorption control sled
Composition.
The wherein main sled Q1 of thermal desorption by feeding spiral 1, double helix electromagnetic heating push thermal desorption system 3, blanking spiral 7,
Steam generator 5, axis air-cooler 9 and feeding gas lock 2, automatic valve 1, automatic valve 26 and blanking gas lock 8 form；Thermal desorption
Pair sled Q2 is by condenser 12, axial flow blower 13, three phases separator 14, suction pump 15, electrochemical treater 19, liquid level gauge
One 17, liquid level gauge 2 18, wind turbine 23, light quantum decomposer 24, oil drain pump 2 25, draining pump 21, oil drain pump 1 and pipeline
2 11, the compositions such as pipeline 3 16, pipeline 4 22, the main sled Q1 and Q2 of thermal desorption are connected by pipeline 1.
Wherein feeding spiral 1 is by motor 1, speed reducer 1, hopper 32, the auger conveyor 33 etc. with pre- thermal jacket
Composition, wherein motor 1 is connected with speed reducer 1, and speed reducer 1 is connected with the auger conveyor 33 with pre- thermal jacket, material
Bucket 32 is mounted on the auger conveyor 33 with pre- thermal jacket.
Wherein double helix electromagnetic heating pushes thermal desorption system 3 by motor 2 26, speed reducer 2 36, shell 28, double helix
Axis 27, the equal composition of electromagnetic heating system 29.Wherein motor 2 26 is connected with speed reducer 2 36, speed reducer 2 36 and double-screw shaft 27
It is connected, electromagnetic heating system 29 is mounted in double-screw shaft 27, and double-screw shaft 27 is mounted on inside shell 28.
Wherein blanking spiral 7 is made of motor 3 35, speed reducer 3 37, the auger conveyor 34 etc. with air-cooled chuck,
Middle motor 3 35 is connected with speed reducer 3 37, and speed reducer 3 37 is connected with the auger conveyor 34 with air-cooled chuck.
Feeding gas lock 2 is connected with feeding spiral 1 and double helix electromagnetic heating push thermal desorption system 3 simultaneously, blanking gas lock
It is connected with blanking spiral 7, steam generator 5 pushes thermal desorption system 3 with double helix electromagnetic heating by automatic valve 4 and is connected.
Oil gas condensation recycles and fixed gas nanometer photolysis system axial flow blower 13 is connected with condenser 12, passes through pipeline 2 11
It is connected with three phases separator 14, three phases separator 4 is connected through pipeline 3 16 with wind turbine 23, wind turbine 23 and light quantity
Sub- decomposer 24 is connected.
Oil recovery and sewage disposal system oil drain pump 25 are connected with three phases separator 14, oil gas water three phase separation
Device 14 is connected with suction pump 15, and suction pump 15 is connected with electrochemical treater 19, and electrochemical treater 19 is connected with draining pump 21.
The utility model type is to solve the processing method taken of technical problem present in known technology：
Oil-containing material delivers into pyrolysis suction tube through feeding spiral 1, is pyrolyzed electromagnetic heating system 29 in suction tube by oil-containing
Material heats, and makes oil phase and the water phase gasification (being referred to as flue gas) in oil-containing material, flue gas enters in condenser 12, and condenser 12 is adopted
Cooled down with air cooling way, by 13 air feed of axial flow blower, condensed oil-gas formation can condensate gas and not condensate gas, can condensate gas and
Condensate gas does not enter in three phases separator 14 simultaneously, and the not condensate gas isolated is pumped into light quantum decomposer through wind turbine
Decomposed in 24 it is up to standard after discharge, can condensed the is formationed liquid phase of condensate gas be pumped into electrochemical treater 19 by suction pump 15, warp
Reusing sewage or qualified discharge after electrochemical treater processing.The solid waste being pyrolyzed after being desorbed in suction tube is defeated through blanking spiral 7
It send discharge, blanking spiral to be equipped with air cooling system, wind cooling temperature lowering is used to material in transmission process, it is ensured that temperature when material is discharged
No more than 60 DEG C.
Implementation steps：
1) it opens double helix electromagnetic heating and pushes thermal desorption system 3, be mounted on double helix electromagnetic heating push thermal desorption system
There are electromagnetic heating system 29, the work of electromagnetic heating system 29 to be preheated inside double-screw shaft 27 on system 3；
2) steam generator 5 is opened, feeding gas lock 2 and blanking gas lock 8 is opened, waits for that steam generator 5 generates enough steam,
Automatic valve 1 is opened, steam blowing is carried out,
3) after the completion of steam blowing, automatic valve 1 and blanking gas lock 8 are closed, oil-containing material is transported to double through feeding spiral 1
Spiral electromagnetic heating pushes in thermal desorption system, and feeding gas lock 2 is closed after the completion of charging.
4) feeding spiral 1 is opened, oil-containing material pushes thermal desorption system 3 by feeding helical feed to double helix electromagnetic heating
In, double helix electromagnetic heating pushes the double-screw shaft 27 in thermal desorption system 3 and oil-containing material is pushed to advance, and has electromagnetic heating system
29 pairs of materials of system heat；
5) after oil-containing material is heated, oil phase and water phase vaporization in oil-containing material generate can condensate gas and not condensate gas, can
Condensate gas and not condensate gas enter through piping 1 in condenser 12, and condenser 12 is by 13 air feed of axial flow blower；
6) after condensed device 12 condenses, can condensate gas be condensed into liquid phase and condensate gas is not flowed into oil gas through piping 2 11
In water three-phase separator 14,
7) fixed gas that three phases separator 14 is isolated is transported to light quantum by wind turbine 23 through pipeline 3 16 and decomposes
In device 24, water and CO2 are produced after decomposition, is discharged into air；
8) oil phase that three phases separator 14 is isolated is discharged to by oil drain pump 2 25 in oil phase collection system；
9) water phase that three phases separator 14 is isolated is transported to by suction pump 15 in electrochemical treater 19,
10) gas phase that electrochemical treater 19 generates after handling is transported to light quantum decomposer by pipeline 4 22 through wind turbine 23
In 24, water and CO2 are produced after decomposition, is discharged into air；
11) oil phase that electrochemical treater 19 generates after handling is discharged to by oil drain pump in oil phase collection system；
12) through electrochemical treater 19 handle it is up to standard after water phase by draining pump 21 discharge be used for re-injection or direct emission；
13) after reaching the setting thermal desorption time, blanking gas lock 8 is opened, double helix electromagnetic heating pushes in thermal desorption system 3
Solid phase after the completion of pyrolysis is delivered to through double-screw shaft 27 in blanking spiral 7,
14) it is then shut off blanking gas lock 8, opens automatic valve 26, blanking spiral 7 conveys solid phase discharge, and solid phase is in blanking spiral shell
It revolves in 7 transmission process and is cooled down by axis air-cooler air blast 9.
15) it opens automatic valve 1 and feeding gas lock 2, the steam generated using steam generator 5 is purged,
16) step 3) -15 is repeated), carry out continuous processing.
When material water ratio≤15%, oil content≤15%, when solid content >=70%, Ben Retuo equipment treating capacities are not less than
500kg/h；TPH≤1% in solid phase after heat is de-；Technical indicator after recycling water process：Oil content≤10mg/L, COD≤500mg/
L, pH=6~9；Installation general power：≤200kW；Plant area：≤30m2。
Although the utility model is described above in conjunction with attached drawing, the utility model is not limited to above-mentioned
Specific implementation mode, the above mentioned embodiment is only schematical, is not restrictive, the ordinary skill of this field
Personnel are not departing from the utility model aims and scope of the claimed protection under the enlightenment of the utility model,
Many forms can also be made, these are belonged within the scope of protection of the utility model.
Claims (9)
1. equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat, which is characterized in that by oil-contained drilling cuttings feeding
System, double helix electromagnetic heating push thermal desorption system, de-oiling drilling cuttings air cooling system, de-oiling drilling cuttings blanking system, oil gas condensation
Recovery system, fixed gas ultraviolet nanometer photolysis system, oil recovery and sewage disposal system, control system composition；The oil-containing
Drilling cuttings feeding system, double helix electromagnetic heating push thermal desorption system, de-oiling drilling cuttings air cooling system and de-oiling drilling cuttings blanking system
The main sled of thermal desorption is integrated into, at the oil gas condensation recovery system, fixed gas ultraviolet nanometer photolysis system, oil recovery and sewage
It manages the system integration to prize for thermal desorption pair, control system integration is prized in order to control.
2. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the oil-contained drilling cuttings feeding system is made of feeding spiral and feeding gas lock, the feeding spiral include motor, speed reducer,
Hopper, the auger conveyor with pre- thermal jacket, the motor are connected with speed reducer, speed reducer and the spiral transferring with pre- thermal jacket
Device is sent to be connected, hopper is mounted on the auger conveyor with pre- thermal jacket, and feeding gas lock is set to the pipe for leading to auger conveyor
On road.
3. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In the double helix electromagnetic heating pushes thermal desorption system, including motor, deceleration system and the double-screw shaft being sequentially connected, institute
It states and electromagnetic heating system is installed in double-screw shaft, double-screw shaft is set to enclosure interior.
4. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the de-oiling drilling cuttings blanking system, including the motor, speed reducer and the discharging helical feed with air-cooled chuck that are sequentially connected
Device, the discharging auger conveyor with air-cooled chuck are respectively arranged below cooling blower and blanking gas lock.
5. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the de-oiling drilling cuttings air cooling system, including the air blower, the air-cooled chuck that are sequentially connected, air-cooled chuck are located at discharging spiral transferring
It send outside device.
6. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the oil gas condensation recovery system, including be sequentially connected high-temperature oil gas pipeline, the air cooling heat exchanger with cooling blower,
High-temperature oil gas is drawn into air cooling heat exchanger and condensed by wind turbine, fixed gas ultraviolet nanometer photolysis system, wind turbine, and fixed gas is sent into not
Solidifying gas ultraviolet nanometer photolysis system is handled.
7. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the fixed gas ultraviolet nanometer photolysis system, including be sequentially connected wind turbine, light quantum decomposer, activated carbon adsorption filtering
Device, fixed gas are sent into light quantum decomposer through wind turbine, while introducing fresh air and on-condensible gas is carried out catalysis oxidation, and tail gas is logical
Activated carbon is crossed further to be purified.
8. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the oil recovery and sewage disposal system, including be sequentially connected sump oil water tank, centrifugal oil pump, centrifugal water pump, electro-catalysis
Apparatus for treating sewage is aoxidized, sump oil water upper layer sump oil after the sedimentation of sump oil water tank is evacuated to oil tank through centrifugal oil pump, and sewage is through centrifugal water
Pumping to electrocatalytic oxidation apparatus for treating sewage carries out sewage disposal.
9. equipment is desorbed in electromagnetic heating sea according to claim 1 oil-containing, hydrocarbon contamination castoff heat, feature exists
In, the control system, including computer and control software, electromagnetic heating controller, PLC, frequency converter, temperature sensor, liquid level
Sensor, controls computer running control software, the rotating speed through PLC and Frequency Converter Control motor, and electromagnetic heating controller control adds
The temperature and power of heat coil, temperature sensor and liquid level sensor reponse system temperature and liquid level information are to PLC and control electricity
Brain, control computer can set the parameter of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721818882.8U CN207738704U (en) | 2017-12-22 | 2017-12-22 | Equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721818882.8U CN207738704U (en) | 2017-12-22 | 2017-12-22 | Equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207738704U true CN207738704U (en) | 2018-08-17 |
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ID=63119431
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721818882.8U Active CN207738704U (en) | 2017-12-22 | 2017-12-22 | Equipment is desorbed in a kind of electromagnetic heating sea oil-containing, hydrocarbon contamination castoff heat |
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| CN (1) | CN207738704U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538139A (en) * | 2018-10-16 | 2019-03-29 | 中国石油天然气集团有限公司 | A kind of thermal desorption processing method of oil-based drill cuttings |
| CN110523094A (en) * | 2019-08-29 | 2019-12-03 | 中国成达工程有限公司 | A kind of conduction oil skid recovery system and thermally conductive oil recovery method |
| CN113727480A (en) * | 2020-05-25 | 2021-11-30 | 中国石油天然气集团有限公司 | Control method and system for output power of electromagnetic heating controller of thermal desorption furnace |
| CN115751916A (en) * | 2022-11-01 | 2023-03-07 | 长江大学 | Sheet-shaped laser beam rapid separation device for oil-containing drilling cuttings |
-
2017
- 2017-12-22 CN CN201721818882.8U patent/CN207738704U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538139A (en) * | 2018-10-16 | 2019-03-29 | 中国石油天然气集团有限公司 | A kind of thermal desorption processing method of oil-based drill cuttings |
| CN110523094A (en) * | 2019-08-29 | 2019-12-03 | 中国成达工程有限公司 | A kind of conduction oil skid recovery system and thermally conductive oil recovery method |
| CN110523094B (en) * | 2019-08-29 | 2024-08-27 | 中国成达工程有限公司 | Conduction oil skid-mounted recovery system and conduction oil recovery method |
| CN113727480A (en) * | 2020-05-25 | 2021-11-30 | 中国石油天然气集团有限公司 | Control method and system for output power of electromagnetic heating controller of thermal desorption furnace |
| CN115751916A (en) * | 2022-11-01 | 2023-03-07 | 长江大学 | Sheet-shaped laser beam rapid separation device for oil-containing drilling cuttings |
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