CN108726832A - The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID - Google Patents
The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID Download PDFInfo
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- CN108726832A CN108726832A CN201810556214.5A CN201810556214A CN108726832A CN 108726832 A CN108726832 A CN 108726832A CN 201810556214 A CN201810556214 A CN 201810556214A CN 108726832 A CN108726832 A CN 108726832A
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- pyrolysis oven
- differential pressure
- pressure transmitter
- surge tank
- pid
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- 239000010802 sludge Substances 0.000 title claims abstract description 26
- 238000000197 pyrolysis Methods 0.000 claims abstract description 59
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000001105 regulatory effect Effects 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 37
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 15
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007790 solid phase Substances 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000012071 phase Substances 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000009834 vaporization Methods 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 101100190462 Caenorhabditis elegans pid-1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to energy-saving environmental protection device technical fields, more particularly to it is a kind of by PID adjust constant pressure realize Energy Saving Control oily sludge object processing system, including nitrogen making machine, nitrogen gas tank, the first motor regulated valve, the second motor regulated valve, third motor regulated valve, the 4th motor regulated valve, the first pyrolysis oven, the second pyrolysis oven, the first differential pressure transmitter, the second differential pressure transmitter, third differential pressure transmitter, the 4th differential pressure transmitter, surge tank group, booster pump, fixed gas surge tank, motor switch valve and be equipped with PID controller.Oily sludge composition granule reacts in pyrolysis oven by high temperature anoxybiotic, and the organic matters phase transformation such as water, oil or polycyclic aromatic hydrocarbon vaporization is detached with solid, and solid phase residue uses closed dried slag removing technology.The incondensible gas of oil gas send to environmental protection in pyrolysis oven and flashes back by booster pump after voltage stabilizing.The system can reduce energy consumption, improve efficiency, reduce security risk, reliability service.
Description
Technical field
The invention belongs to energy-saving environmental protection device technical fields, and the energy saving control of constant pressure realization is adjusted by PID more particularly to a kind of
The oily sludge object processing system of system.
Background technology
Oily sludge object is generated a kind of rich in mineral oil in oil exploration, exploitation, storage and transportation and refining process
Solid-liquid mixes class waste.No matter oily sludge object enters soil also or ocean, lake, all can be to ecological environment or water source
It causes seriously to pollute, urgent need obtains effective and sustainable improvement.Wherein pyrolyzing sludge is worldwide implemented, at present
Have that operation interval is discontinuous, efficiency is low, security risk is high, high energy consumption, system operation are unstable containing pollutant disposal system
The defects of determining.So a kind of efficient, energy conservation and environmental protection of design, safe and reliable oily sludge object processing system are very necessary
's.
Invention content
The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID the object of the present invention is to provide a kind of
System, the system can reduce energy consumption, improve efficiency, reduce security risk, system can continuous reliability service, energy-efficient, peace
It is complete reliable, it realizes the ultra-clean processing of oily sludge object, can promote and use on a large scale.
The technical solution adopted by the present invention is：It is a kind of to be realized at the oily sludge object of Energy Saving Control by PID adjusting constant pressures
Reason system, including nitrogen making machine, nitrogen gas tank, the first motor regulated valve, the second motor regulated valve, third motor regulated valve,
4th motor regulated valve, the first pyrolysis oven, the second pyrolysis oven, the first differential pressure transmitter, the second differential pressure transmitter, third
It differential pressure transmitter, the 4th differential pressure transmitter, surge tank group, booster pump, fixed gas surge tank, motor switch valve and is equipped with
PID controller；The nitrogen making machine is connect by pipeline with nitrogen gas tank, and nitrogen gas tank is pyrolyzed by pipeline and the first pyrolysis oven and second
Stove connects, and the first pyrolysis oven and the second pyrolysis oven are connect by pipeline with surge tank group, and surge tank group passes through pipeline and fixed gas
Surge tank connects, and fixed gas surge tank is connect by pipeline with the first pyrolysis oven and the second pyrolysis oven；Nitrogen gas tank and the first pyrolysis
On pipeline between stove, nitrogen gas tank and the second pyrolysis oven, the first pyrolysis oven and surge tank group and the second pyrolysis oven and surge tank group
It is separately installed with the first motor regulated valve, the second motor regulated valve, third motor regulated valve and the 4th electric control valve
Door；Pipeline between first pyrolysis oven and surge tank group, the second pyrolysis oven and surge tank group is separately installed with the first elementary errors buckling
Send device and the second differential pressure transmitter；It is separately installed with third differential pressure transmitter on the surge tank group and fixed gas surge tank
With the 4th differential pressure transmitter, motor switch valve is installed on the exhaust pipe of fixed gas surge tank；The first elementary errors buckling
Send device, the second differential pressure transmitter, third differential pressure transmitter and the 4th differential pressure transmitter respectively by conducting wire and PID control
Device connects, and PID controller passes through conducting wire and the first motor regulated valve, the second motor regulated valve, third motorized adjustment respectively
Valve, the 4th motor regulated valve, booster pump and the connection of motor switch valve.
Further, the PID controller is set in control centre.
Further, the PID controller is connected by the frequency converter of conducting wire and booster pump.
Beneficial effects of the present invention：Provide it is a kind of by PID adjust constant pressure realize Energy Saving Control oily sludge object at
Reason system, the system can reduce energy consumption, improve efficiency, reduce security risk, system can continuous reliability service, efficiently save
Can, securely and reliably, realizes the ultra-clean processing of oily sludge object, can promote and use on a large scale.Major advantage is as follows：
（1）, this system can realize continuous feeding and discharging, oil recovery rate is higher, and deslagging works well, and improves treatment effeciency, reduce
Labor intensity, it is applied widely to oily sludge object without strict demand, meet energy-saving and environment-friendly requirement.
（2）, this system using high temperature anoxybiotic run, improve overall operation safety.
（3）, this system fixed gas is recycled, as fuel reuse, saved fuel, improved the level of resources utilization, reduced
System operation cost realizes material product recycling, Harmless and Comprehensive Disposal technique
（4）, this system treated solid phase residue use closed dried slag removing technology, realize the clean emission of residue.
（5）, this system bias adjustment is carried out to entire control system by PID controller, not only have more flexible
Modulating properties, and energy-saving purpose can also be played.Frequency-changing pressure stabilizing system can ensure that motor is in optimized operation operating mode,
The performance of high-efficiency and economic operation is obtained, while also keeping the dynamic equilibrium of system, system operation is made more to stablize, it is more energy saving.
Description of the drawings：
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is PID control schematic diagram in embodiment；
Fig. 3 is pid control mode schematic diagram in embodiment.
Specific implementation mode：
Embodiment one
Referring to Fig.1-3, a kind of to adjust the oily sludge object processing system that constant pressure realizes Energy Saving Control, including nitrogen making machine by PID
1, nitrogen gas tank 2, the first motor regulated valve 3, the second motor regulated valve 4, third motor regulated valve 9, the 4th motorized adjustment
Valve 10, the first pyrolysis oven 5, the second pyrolysis oven 6, the first differential pressure transmitter 7, the second differential pressure transmitter 8, third differential pressure
Transmitter 11, the 4th differential pressure transmitter 15, surge tank group 12, booster pump 13, fixed gas surge tank 14, motor switch valve 16
And it is equipped with PID controller 17；The nitrogen making machine 1 is connect by pipeline with nitrogen gas tank 2, and nitrogen gas tank 2 is pyrolyzed by pipeline and first
Stove 5 and the connection of the second pyrolysis oven 6, the first pyrolysis oven 5 and the second pyrolysis oven 6 are connect by pipeline with surge tank group 12, surge tank
Group 12 is connect by pipeline with fixed gas surge tank 14, and fixed gas surge tank 14 passes through pipeline and the first pyrolysis oven 5 and the second heat
Stove 6 is solved to connect；Nitrogen gas tank 2 and the first pyrolysis oven 5, nitrogen gas tank 2 and the second pyrolysis oven 6, the first pyrolysis oven 5 and surge tank group 12 and
The first motor regulated valve 3, the second electric control valve are separately installed on pipeline between second pyrolysis oven 6 and surge tank group 12
Door 4, third motor regulated valve 9 and the 4th motor regulated valve 10；First pyrolysis oven 5 and surge tank group 12, the second pyrolysis oven 6
Pipeline between surge tank group 12 is separately installed with the first differential pressure transmitter 7 and the second differential pressure transmitter 8；The buffering
It is separately installed with third differential pressure transmitter 11 and the 4th differential pressure transmitter 15 on tank group 12 and fixed gas surge tank 14, is not coagulated
Motor switch valve 16 is installed on the exhaust pipe of gas surge tank 14；First differential pressure transmitter 7, the second differential pressure pick-up
Device 8, third differential pressure transmitter 11 and the 4th differential pressure transmitter 15 are connect by conducting wire with PID controller 17 respectively, PID controls
Device 17 processed passes through conducting wire and the first motor regulated valve 3, the second motor regulated valve 4, third motor regulated valve 9, respectively
Four motor regulated valves 10, booster pump 13 and motor switch valve 16 connect；The PID controller 17 is set to control centre
It is interior；The PID controller 17 is connect by conducting wire with the frequency converter of booster pump 13.
This system realizes the pyrolysis separating process of continuous feeding and discharging high temperature anoxybiotic, does high temperature anoxybiotic using nitrogen and protects
Hold the pressure balance of system.Nitrogen making machine is obtained the nitrogen of high-purity using physical method for separation, is stored in nitrogen using air as raw material
In gas tank, and ensure that nitrogen pressure inside the tank is 0.4MPa.Oily sludge composition granule passes through in the first pyrolysis oven and the second pyrolysis oven
400 DEG C~700 DEG C high temperature anoxybiotic reactions are crossed, the heavy constituent of crude oil is converted into light component and then phase transformation vaporization, water, oil or polycyclic virtue
The organic matters phase transformation such as hydrocarbon vaporizes, and is detached with solid, forms oil gas, heat exchanger, separator and buffering of the oil gas Jing Guo surge tank group
Tank etc. is delivered to transportation tank car outward transport recycling by output pump.Solid phase residue uses closed dried slag removing technology, realizes the clean of residue
Net discharge, solid phase residue reaches national disposal of oily sludge standard after desorption processing, realizes ultra-clean processing, and oil gas is condensed, divides
Transportation tank car outward transport recycling is delivered to by output pump based on petrol and diesel oil, paraffin hydrocarbon, water from liquid phase after processing.Oil gas cannot condense
Gas send to environmental protection in the first pyrolysis oven and the second pyrolysis oven and flash back, no by booster pump after fixed gas surge tank voltage stabilizing
Solidifying gas improves the utilization ratio of resource, reduces system operation cost as main fuel reuse.
First pyrolysis oven pyrolysis oven and the second pyrolysis oven into being mounted with respectively on nitrogen pipeline and oil gas vent pipeline
First motor regulated valve, the second motor regulated valve, third motor regulated valve and the 4th motor regulated valve；Pyrolysis oven into
The motor regulated valve of gas pipeline controls the motorized adjustment of pyrolysis oven air inlet according to the oil gas vent pressure of pyrolysis outlet of still
Valve is opened when oil gas vent pressure is less than 0Pa, is closed when higher than 30Pa, ensures to be desorbed in anoxybiotic in pyrolysis oven.Pyrolysis
The motor regulated valve of furnace oil gas outlet line installation controls pyrolysis oven oil gas according to the oil gas vent pressure of pyrolysis outlet of still
The motor regulated valve of outlet adjusts oil gas vent pressure between 0Pa-100Pa by PID.
Differential pressure transmitter is installed in surge tank group, the frequency of booster pump is adjusted by PID, pressure inside the tank control will be buffered
System is between -50Pa to+30Pa；Differential pressure transmitter is installed on fixed gas surge tank, tank deck is buffered by chain fixed gas
Superpressure emergency blow-down motor switch valve, ensure pressure inside the tank<6KPa .PID controller is located in control centre, according to PID
Control principle carries out bias adjustment to entire control system, to keep the actual value of controlled variable consistent with predetermined value.By elementary errors
Pressure transmitter, motor regulated valve not only have more with the constant-voltage system that control centre's built-in PID frequency converter is combined composition
Flexible modulating properties, and energy-saving purpose can also be played.PID controller by differential pressure transmitter acquisition come pressure
The frequency of force signal, the aperture and booster pump frequency converter for carrying out balance electric control valve, and then adjust input quantity and the increasing of nitrogen
The frequency of press pump input power reaches the dynamic equilibrium that control motor speed realizes pyrolysis furnace pressure.Entire constant-voltage system exists
In the course of work, it is practical that internal system is obtained by the first differential pressure transmitter and the second differential pressure transmitter that are pyrolyzed outlet of still
Pressure signal, and by this signal transmission to frequency conversion speed-adjusting system, using frequency converter internal PID signal conditioner by actual pressure
Signal is compared operation with preset pressure signal, forms instantaneous difference on the frequency, directly adjusts the input quantity and booster pump of nitrogen
The frequency of input power reaches the dynamic equilibrium that control motor speed realizes pyrolysis furnace pressure.Frequency-changing pressure stabilizing system can be protected
Card motor is in optimized operation operating mode, obtains the performance of high-efficiency and economic operation, while also keeping the dynamic equilibrium of system, makes system
Operation is more stablized, more energy saving.The control mode of PID controller is set as to the PID control method of Fuzzy self- turning, is obtained
Dynamic response is fast, and overshoot is small, and system pressure control is made to stablize.
Claims (8)
1. a kind of adjusting the oily sludge object processing system that constant pressure realizes Energy Saving Control by PID, it is characterised in that：Including nitrogen processed
Machine（1）, nitrogen gas tank（2）, the first motor regulated valve（3）, the second motor regulated valve（4）, third motor regulated valve（9）,
4th motor regulated valve（10）, the first pyrolysis oven（5）, the second pyrolysis oven（6）, the first differential pressure transmitter（7）, the second elementary errors
Pressure transmitter（8）, third differential pressure transmitter（11）, the 4th differential pressure transmitter（15）, surge tank group（12）, booster pump
（13）, fixed gas surge tank（14）, motor switch valve（16）And it is equipped with PID controller（17）；The nitrogen making machine（1）Pass through pipe
Line and nitrogen gas tank（2）Connection, nitrogen gas tank（2）Pass through pipeline and the first pyrolysis oven（5）With the second pyrolysis oven（6）Connection, the first heat
Solve stove（5）With the second pyrolysis oven（6）Pass through pipeline and surge tank group（12）Connection, surge tank group（12）Pass through pipeline and fixed gas
Surge tank（14）Connection, fixed gas surge tank（14）Pass through pipeline and the first pyrolysis oven（5）With the second pyrolysis oven（6）Connection.
2. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：First motor regulated valve（3）, the second motor regulated valve（4）, third motor regulated valve（9）With
4th motor regulated valve（10）It is separately mounted to nitrogen gas tank（2）With the first pyrolysis oven（5）, nitrogen gas tank（2）With the second pyrolysis oven
（6）, the first pyrolysis oven（5）With surge tank group（12）And second pyrolysis oven（6）With surge tank group（12）Between pipeline on.
3. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：First differential pressure transmitter（7）With the second differential pressure transmitter（8）It is separately mounted to the first pyrolysis oven
（5）With surge tank group（12）, the second pyrolysis oven（6）With surge tank group（12）Between pipeline on.
4. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：The third differential pressure transmitter（11）With the 4th differential pressure transmitter（15）It is separately mounted to surge tank group
（12）With fixed gas surge tank（14）On.
5. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：The motor switch valve（16）Mounted on fixed gas surge tank（14）Exhaust pipe on.
6. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：First differential pressure transmitter（7）, the second differential pressure transmitter（8）, third differential pressure transmitter（11）With
4th differential pressure transmitter（15）Pass through conducting wire and PID controller respectively（17）Connection, PID controller（17）Pass through conducting wire respectively
With the first motor regulated valve（3）, the second motor regulated valve（4）, third motor regulated valve（9）, the 4th electric control valve
Door（10）, booster pump（13）And motor switch valve（16）Connection.
7. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：The PID controller（17）It is set in control centre.
8. a kind of oily sludge object processing system adjusting constant pressure realization Energy Saving Control by PID according to claim 1,
It is characterized in that：The PID controller（17）Pass through conducting wire and booster pump（13）Frequency converter connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556214.5A CN108726832A (en) | 2018-06-01 | 2018-06-01 | The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556214.5A CN108726832A (en) | 2018-06-01 | 2018-06-01 | The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID |
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| Publication Number | Publication Date |
|---|---|
| CN108726832A true CN108726832A (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810556214.5A Pending CN108726832A (en) | 2018-06-01 | 2018-06-01 | The oily sludge object processing system that constant pressure realizes Energy Saving Control is adjusted by PID |
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