CN108587765A - A kind of pretreating process of the high-quality base oil of waste lubricant oil regeneration - Google Patents

A kind of pretreating process of the high-quality base oil of waste lubricant oil regeneration Download PDF

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CN108587765A
CN108587765A CN201810572044.XA CN201810572044A CN108587765A CN 108587765 A CN108587765 A CN 108587765A CN 201810572044 A CN201810572044 A CN 201810572044A CN 108587765 A CN108587765 A CN 108587765A
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oil
lubricating oil
propane
waste lubricating
nmp
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CN108587765B (en
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张先茂
王栋斌
王泽�
王国兴
吴阳春
周正
夏大寒
王瑜
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Hubei Kerun Petrochemical Technology Co ltd
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WUHAN KELIN FINE CHEMICAL CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0016Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0025Working-up used lubricants to recover useful products ; Cleaning by thermal processes
    • C10M175/0033Working-up used lubricants to recover useful products ; Cleaning by thermal processes using distillation processes; devices therefor
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0025Working-up used lubricants to recover useful products ; Cleaning by thermal processes
    • C10M175/0041Working-up used lubricants to recover useful products ; Cleaning by thermal processes by hydrogenation processes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/005Working-up used lubricants to recover useful products ; Cleaning using extraction processes; apparatus therefor

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The present invention proposes a kind of pretreating process of the high-quality base oil of waste lubricant oil regeneration, process include chemical reaction dechlorination, catalytic hydroprocessing thermal decomposition, atmospheric flashing, propane refine, NMP or furfural extraction unit.It chemically reacts dechlorination and solves in Spent lube reclamation process organochlorine burn into line clogging and the problems such as catalyst poisoning caused by reaction unit.Catalytic hydroprocessing thermal decomposition destroys the additive of metal salt form in waste lubricating oil, solves the problems, such as that separation is difficult when solvent refining.Waste lubricating oil removes water and light-weight fuel oil through atmospheric flashing, then refines plug Residual oil with propane, removes the impurity such as additive, metal salt, oxidative condensate, the resin and asphalt in waste lubricating oil, can ash content be down to 0.02% or less.NMP or furfural be a kind of selectivity compared with strong the lower solvent of solvability, utilize this property, you can metal, carbon residue, colloid and the lower refined oil of aromatic hydrocarbons are obtained, to add hydrogen to provide quality raw materials.

Description

A kind of pretreating process of the high-quality base oil of waste lubricant oil regeneration
Technical field
The invention belongs to waste lubricant oil regeneration, petrochemical industries, are related to a kind of high-quality base oil of waste lubricant oil regeneration Pretreating process.
Background technology
With the industries such as engineering machinery, electric power, automobile, steel, ship, lathe rapid growth and equipment technology not Disconnected to be promoted, the limited petroleum reserves of sharp increase and the whole world of demand for lubricating oil has caused the drastically liter of petroleum product price Height was therefore, in the past insufficient as the way of fuel oil by waste lubricating oil in the case where international crude oil price rises year by year It takes, it is opposite, the base oil not gone bad in waste lubricating oil is subject to recycling, environmental protection is not only improved, reduces dirt Dye, can also push the sound development of environmental protection industry.
Lubricating oil loses seldom during use, but due to rigorous service condition, by heavy metal, dust, water, lightweight Fuel, carbon particle, colloid, asphalitine and the pollution of the additive of degradation, these additives and pollutant have seriously affected useless lubrication The safety and long-term operation of Decvice for regeneration of oils.In Spent lube reclamation process, part organic chloride, which encounters high temperature, to be occurred Hydrolysis generates hydrogen chloride, causes to corrode to the low temperature position of device, and unhydrolysed organochlorine enters subsequent hydrogenation plant, Organic chloride translates into hydrogen chloride, and hydrogen chloride is respectively formed hydrochloric acid and ammonium chloride with water and ammonia, and corrosion is caused simultaneously to equipment Block pipeline, device can be caused to be forced shut-down (breakdown) mainteance when serious;When with solvent refining waste lubricating oil, due to depositing for detergent-dispersant additive , cause waste lubricating oil interface in solvent refining unclear, separation is difficult, when distillation easily on fractionating tower tray incrustation, influence Its normal operating;Due to the presence of detergent-dispersant additive, many solids are disperseed in the oil with colloidal state in waste lubricating oil, high Pyrolysis occurs for detergent-dispersant additive under the conditions of temperature, and the solids of these colloidal states get off with regard to flocking settling, cause stove Blockage, heat exchanger blocks and column plate coking.Therefore, pretreatment unit is the key that entire producing base oil by regenerating waste lubricating oil ring Section.
CN104560147B discloses a kind of base oil for waste lubricating oil reclaiming and carries out desulfurization and aromatic hydrocarbon Method, process include extraction processing procedure, centrifugation processing procedure, short distance rectifying processing procedure and shared device processing procedure etc..Wherein extraction system Journey is by NMP(N-Methyl pyrrolidone)Reclaimed Base Oil is extracted for extractant, the method is except energy deep desulfuration and removing Outside aromatic hydrocarbons, moreover it is possible to reduce coloration, improve flash-point and viscosity index (VI).
CN104099171B discloses a kind of continuous distillation process for waste lubricant oil regeneration, process include waste oil with Heat transfer process, visbreaking thermal treatment unit and flash distillation-vacuum distillation unit of the cutting fraction of distillation.It can be with by visbreaking heat treatment The effective peace and quiet dispersing additive abolished in waste oil, enable in waste oil the suspended impurities such as metal are easier to deposit, A part of Metal Salts and corrosive organic acid are also made to decompose or go bad simultaneously, it, can be effective using flash distillation-vacuum distillation Light component and base oil fractions are extracted.
CN100334189C discloses a kind of process for regeneration of waste lubricating oil, and process includes clean unit, alkane solvents Extraction cells, fractionation unit.By using alkane solvents extraction instead of pickling and clay-filtered, avoids generating acid sludge and cause two Secondary pollution.
Waste lubricant oil regeneration uses traditional acid-distillation-carclazyte technique that can only obtain, and color is deep, taste is pungent, viscosity refers to The relatively low Reclaimed Base Oil of number.The new pollution-free regeneration technology of developed recently, although molecule short-path distillation, film evaporation technique, The preconditioning techniques such as solvent refining have certain industrialization effect, but these technologies are all unification technologies, to waste lubricating oil Pretreatment do not formed and a set of perfect comprehensive process program, waste lubricating oil synthesis recycled to recycle less efficient.In order to Ensure the long-term operation of producing base oil by regenerating waste lubricating oil device, it is useless how waste lubricating oil effectively destroys in pretreatment process Additive in oil, removing middle ash content, organochlorine, mechanical admixture, colloid, asphalitine and the metal of waste oil becomes particularly important.
Invention content
The invention reside in a kind of pretreating process of the high-quality base oil of waste lubricant oil regeneration is provided, can not only solve organic Chlorine burn into line clogging and the problems such as catalyst poisoning caused by regenerator for waste lubricating oil, can also solve due to clear Net dispersant and other surfactants be easy to cause emulsification in solvent refining, keep two-phase laminated flow difficult, interface is unclear to ask Topic, improves the yield of refined oil, and provide quality raw materials for subsequent hydrogenation plant.
To solve the above-mentioned problems, the technical solution adopted by the present invention include chemical reaction dechlorination, catalytic hydroprocessing thermal decomposition, Atmospheric flashing, propane is refined, NMP or furfural extraction step:
(1) dechlorination is chemically reacted:After waste lubricating oil containing organochlorine carries out dehydrating and removing impurities, enter with stirring after heat exchange The dechlorination reaction device of device, chemical reaction dechlorination are in the presence of accelerating agent, and antichlor is under certain temperature and pressure and useless Organochlorine in lubricating oil reacts, and the operating condition for chemically reacting dechlorination is:Reaction temperature is 260-370 DEG C, reaction pressure Power is normal pressure.
(2) catalytic hydroprocessing thermally decomposes:Waste lubricating oil after chemical reaction dechlorination enters after heat-exchange system exchanges heat faces hydrogen Catalytic Thermal Decomposition reactor, the operating condition for facing hydrogen heat treatment reactor are:Reaction temperature is 270-380 DEG C, and the reaction time is 30-120min, reaction pressure 0-0.8MPa.
(3) atmospheric flashing:Waste lubricating oil after catalytic hydroprocessing thermal decomposition enters atmospheric flash tower dehydration and extracts light oil, often Pressure flash distillation operating condition be:Atmospheric flash tower inlet temperature is 170-240 DEG C.
(4) propane is refined:Waste lubricating oil enters propane refined unit, propane after atmospheric flash tower removes water and light oil After being mixed with waste lubricating oil, the condensation product that additive in waste lubricating oil and high-temperature oxydation can be generated, colloid, asphalitine, The metal salt that organic Acids eat metals generate, and other mechanical admixtures are precipitated out, and it is molten that base oil is retained in propane In liquid, propane is boiled off and can be obtained by propane refined oil, propane purification operations condition is:Temperature is 70-95 DEG C, pressure 4- 6MPa。
(5) NMP or furfural extraction:NMP or furfural be a kind of selectivity compared with strong the lower solvent of solvability, it is right Different hydro carbons has different solubility in waste lubricating oil fraction, the aromatic hydrocarbon and cycloalkane of polycyclic short-side chain, colloid, sulphur and nitrogen Compound etc.(Undesirable components)Solubility in NMP or furfural is larger, the hydro carbons of the long side chain of few ring(Ideal composition) Solubility in NMP or furfural is small, using this property, make waste lubricating oil raw material in extraction tower with NMP or furfural Counter current contacting separates the different two-phase of severe under less than oil product critical temperature condition, then utilizes severe poor, makes non-ideal Component is Extract by the outflow of extraction tower bottom, and ideal composition is refined liquid by the outflow of extracting tower top, after steaming solvent respectively, you can Obtain tapped oil and refined oil.
Advantages of the present invention:
(1) the chlorohydrocarbon in waste lubricating oil can be effectively removed by chemically reacting dechlorination, solve organochlorine to waste lubricating oil The problems such as burn into line clogging caused by regenerating unit and catalyst poisoning.
(2) catalytic hydroprocessing thermal decomposition can destroy the additive in waste lubricating oil in fairly simple method, and ash-forming material is a large amount of It is converted into the residue that can be filtered to remove, interface is unclear when solving refined propane, NMP or furfural extraction, detaches difficulty Problem.
(3) propane extracting can be by condensation product, colloid, asphalitine, the metal of additive and oxidation generation in waste lubricating oil Salt and other type contamination precipitations come out, and ash content is down to 0.02% or less.
(4) utilize NMP or furfural extraction that there is the spy of different solubilities to various hydro carbons contained in waste lubricating oil raw material Property, the solubility of undesirable components in a solvent is bigger, and the solubility of ideal composition in a solvent is smaller, in certain item Under part, it can incite somebody to action
Ideal composition and undesirable components in waste lubricating oil raw material separate, and good original is provided for subsequent hydrofinishing Material ensures hydrogenation plant safety, steady, long-term operation.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
A is raw material in Fig. 1, and b is dehydrating and removing impurities, and c is chemical reaction dechlorination, and d is to face hydrogen heat treatment, and e is atmospheric flashing, f Refined for propane, g is NMP or furfural extraction.
Specific implementation mode
Below in conjunction with the specific embodiment technical solution that present invention be described in more detail, further refinement illustrates every A processing step.
Embodiment 1.
As shown in Figure 1, from tank field come waste lubricating oil raw material after dehydrating and removing impurities, raw material by heat exchange to 335 DEG C enter band There is the dechlorination reaction device of agitating device, carries out dechlorination reaction;Enter subsequently into heating furnace, after being heated to 380 DEG C and faces hydrogen and urge Thermal decomposition reactor stops 30min at 380 DEG C;Catalytic hydroprocessing thermal decomposition after waste lubricating oil enter heat exchanger exchanged heat to 170 DEG C, into atmospheric flash tower, remove moisture and light oil;To 95 DEG C, then raw material after removing moisture and light oil exchanges heat 6.0MPa, which is boosted to, by pump enters propane refined unit, additive and high-temperature oxydation generate in waste lubricating oil condensation product, The metal salt that colloid, asphalitine, organic Acids eat metals generate, and other mechanical admixtures are protected from extraction tower bottom discharge It stays in base oil in propane solution to flow out from tower top, propane is boiled off, propane refined oil just can be obtained;Propane refined oil is through heat exchange It is afterwards 1 according to the volume ratio of propane refined oil and furfural:1.5 ratio enters furfural extraction unit, and propane refined oil is from extracting Tower middle and lower part enters in tower, and the furfural of recycling is introduced through exchanging heat and being cooled to proper temperature from tower top, makes waste lubricating oil raw material With furfural counter current contacting in extraction tower, the aromatic hydrocarbon and cycloalkane, glue of the polycyclic short-side chain in waste lubricating oil are further removed The undesirable components such as matter, sulphur and nitrogen compound, make undesirable components by extraction tower bottom of tower outflow be Extract, ideal composition by The outflow of extraction tower tower top is refined liquid, can must raffinate oil after boiling off solvent and refined oil, refined oil can enter subsequent add Hydrogen production device.
Embodiment 2.
As shown in Figure 1, from tank field come waste lubricating oil raw material after dehydrating and removing impurities, raw material by heat exchange to 370 DEG C enter band There is the dechlorination reaction device of agitating device, carries out dechlorination reaction;Subsequently into catalytic hydroprocessing thermal decomposition reactor, stopped at 370 DEG C 80min;Waste lubricating oil after catalytic hydroprocessing thermal decomposition enters heat exchanger and is exchanged heat to 240 DEG C, into atmospheric flash tower, removes water Point and light oil;Raw material after removing moisture and light oil exchanges heat to 70 DEG C, and then boosting to 4.0MPa by pump enters propane Refined unit, condensation product, colloid, asphalitine, the organic Acids eat metals that additive and high-temperature oxydation generate in waste lubricating oil The metal salt of generation, and other mechanical admixture is from extraction tower bottom discharge is retained in propane solution base oil from tower top Outflow, propane is boiled off, propane refined oil just can be obtained;Propane refined oil is after heat exchange according to the volume of propane refined oil and NMP Than being 1:1 ratio enters NMP extraction units, and propane refined oil enters from extraction tower middle and lower part in tower, and the NMP of recycling is through heat exchange It is introduced from tower top with proper temperature is cooled to, waste lubricating oil raw material is made, with NMP counter current contactings, further to be removed in extraction tower The undesirable components such as the aromatic hydrocarbon and cycloalkane, colloid, sulphur and nitrogen compound of the polycyclic short-side chain in waste lubricating oil, make unreasonably Think that component by the outflow of extraction tower bottom of tower is Extract, ideal composition is refined liquid by the outflow of extraction tower tower top, is boiled off after solvent i.e. It can must raffinate oil and refined oil, refined oil can enter subsequent hydrogenation plant.
Embodiment 3.
As shown in Figure 1, from tank field come waste lubricating oil raw material after dehydrating and removing impurities, raw material by heat exchange to 260 DEG C enter band There is the dechlorination reaction device of agitating device, carries out dechlorination reaction;Subsequently into heat exchanger, is exchanged heat to entering after 270 DEG C and face hydrogen and urge Thermal decomposition reactor stops 120min at 270 DEG C;Catalytic hydroprocessing thermal decomposition after waste lubricating oil enter heat exchanger exchanged heat to 210 DEG C, into atmospheric flash tower, remove moisture and light oil;To 80 DEG C, then raw material after removing moisture and light oil exchanges heat 5.5MPa, which is boosted to, by pump enters propane refined unit, additive and high-temperature oxydation generate in waste lubricating oil condensation product, The metal salt that colloid, asphalitine, organic Acids eat metals generate, and other mechanical admixtures are protected from extraction tower bottom discharge It stays in base oil in propane solution to flow out from tower top, propane is boiled off, propane refined oil just can be obtained;Propane refined oil is through heat exchange It is afterwards 1 according to the volume ratio of propane refined oil and furfural:2 ratio enters furfural extraction unit, and propane refined oil is from extraction tower Middle and lower part enters in tower, and the furfural of recycling is introduced through exchanging heat and being cooled to proper temperature from tower top, and waste lubricating oil raw material is made to exist In extraction tower with furfural counter current contacting, further remove the polycyclic short-side chain in waste lubricating oil aromatic hydrocarbon and cycloalkane, colloid, The undesirable components such as sulphur and nitrogen compound, it is Extract so that undesirable components is flowed out by extraction tower bottom of tower, and ideal composition is by taking out Stripper overhead outflow is refined liquid, can must raffinate oil after boiling off solvent and refined oil, refined oil can enter subsequent plus hydrogen Device.
Crude lube stock and its typical products property are as shown in table 1 in embodiment.
Crude lube stock and its typical products property in 1. embodiment of table

Claims (6)

1. a kind of pretreating process of the high-quality base oil of waste lubricant oil regeneration, which is characterized in that including chemical reaction dechlorination, face hydrogen Catalytic Thermal Decomposition, atmospheric flashing, propane is refined, NMP or furfural extraction step, specific as follows:
(1) dechlorination is chemically reacted:After waste lubricating oil containing organochlorine carries out dehydrating and removing impurities, enter with stirring after heat exchange The dechlorination reaction device of device, chemical reaction dechlorination are in the presence of accelerating agent, and antichlor is under certain temperature and pressure and useless Organochlorine in lubricating oil reacts, and the operating condition for chemically reacting dechlorination is:Reaction temperature is 260-370 DEG C, reaction pressure Power is normal pressure;
(2) catalytic hydroprocessing thermally decomposes:It chemically reacts the waste lubricating oil after dechlorination and enters catalytic hydroprocessing after heat-exchange system exchanges heat The operating condition of thermal decomposition reactor, catalytic hydroprocessing thermal decomposition reactor is:Reaction temperature is 270-380 DEG C, and the reaction time is 30-120min, reaction pressure 0-0.8MPa;
(3) atmospheric flashing:Waste lubricating oil after catalytic hydroprocessing thermal decomposition enters atmospheric flash tower dehydration and extracts light oil, and normal pressure dodges The operating condition of steaming is:Atmospheric flash tower inlet temperature is 170-240 DEG C;
(4) propane is refined:Waste lubricating oil enters propane refined unit after atmospheric flash tower removes water and light oil, propane with it is useless It is the condensation product that additive in waste lubricating oil and high-temperature oxydation can be generated, colloid, asphalitine, organic after lubricating oil mixing The metal salt that Acids eat metals generate, and other mechanical admixtures are precipitated out, and base oil is retained in propane solution, Propane is boiled off and can be obtained by propane refined oil, propane purification operations condition is:Temperature is 70-95 DEG C, pressure 4-6MPa;
(5) NMP or furfural extraction:NMP or furfural be a kind of selectivity compared with strong the lower solvent of solvability, to useless profit Different hydro carbons has different solubility, the change of the aromatic hydrocarbon and cycloalkane, colloid, sulphur and nitrogen of polycyclic short-side chain in lubricant oil fraction Close object etc.(Undesirable components)Solubility in NMP or furfural is larger, the hydro carbons of the long side chain of few ring(Ideal composition)In NMP Or the solubility in furfural is small, using this property, waste lubricating oil raw material is made to be connect with NMP or furfural adverse current in extraction tower Touch, under less than oil product critical temperature condition, separate the different two-phase of severe, then utilize severe it is poor, make undesirable components by The outflow of extraction tower bottom of tower is Extract, and ideal composition is refined liquid by the outflow of extraction tower tower top, after steaming solvent respectively, you can To tapped oil and refined oil.
2. a kind of free of contamination waste lubricating oil cyclic regeneration pretreating process according to right 1, which is characterized in that the step Suddenly (1) the condition of middle chemical reaction dechlorination is:Reaction temperature is 260-320 DEG C, and reaction pressure is normal pressure.
3. a kind of free of contamination waste lubricating oil cyclic regeneration pretreating process according to right 1, which is characterized in that the step Suddenly (2) the condition of middle catalytic hydroprocessing thermal decomposition is:Reaction temperature is 330-380 DEG C, reaction time 60-120min, reaction pressure For 0-0.6MPa.
4. a kind of free of contamination waste lubricating oil cyclic regeneration pretreating process according to right 1, which is characterized in that the step Suddenly (3) the condition of middle atmospheric flashing is:Atmospheric flash tower inlet temperature is 180-230 DEG C.
5. a kind of free of contamination waste lubricating oil cyclic regeneration pretreating process according to right 1, which is characterized in that the step Suddenly (4) the refined condition of middle propane is:Reaction temperature is 70-90 DEG C, reaction pressure 4.5-5.5MPa.
6. a kind of free of contamination waste lubricating oil cyclic regeneration pretreating process according to right 1, which is characterized in that the step Suddenly (5) the condition of middle NMP or furfural extraction is:The volume ratio of NMP or furfural extraction and propane refined oil is:1:1-1:2.
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Cited By (6)

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CN109852464A (en) * 2019-03-15 2019-06-07 内蒙古大江润业环保科技有限公司 New lubricating oil technology of waste oil regenerating method
CN114085683A (en) * 2021-11-23 2022-02-25 湖北科润石化科技有限公司 Process for preparing lubricating oil base oil by hydrogenating and regenerating waste lubricating oil
CN114164022A (en) * 2021-11-24 2022-03-11 成都前成科技有限公司 Etherification and solvent refining process of plastic reclaimed oil
CN114177657A (en) * 2021-12-23 2022-03-15 安徽国孚凤凰科技有限公司 Coalescence-separation type saturated oil separation recovery device and method for base oil solvent extraction extract
CN114288710A (en) * 2021-12-28 2022-04-08 安徽国孚凤凰科技有限公司 Desensitizing device and method for NMP solvent after base oil extraction and refining
CN114317094A (en) * 2021-12-27 2022-04-12 江苏洋井环保服务有限公司 Pollution-reducing continuous regeneration pretreatment device and process for waste engine oil

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CN106833736A (en) * 2017-03-29 2017-06-13 山东铂铠环保科技有限公司 A kind of method of waste oil regeneration base oil
CN107325839A (en) * 2017-07-12 2017-11-07 宁波中循环保科技有限公司 Method for regenerating waste lubricating oil
CN108085060A (en) * 2018-01-22 2018-05-29 常州菲纳斯能源科技有限公司 Waste lubricant oil by hydrogenation process for purification and hydrofinishing system

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US5783068A (en) * 1994-09-13 1998-07-21 Total Raffinage Distribution, S.A. Process for dechlorination of a spent oil fraction
CN106833736A (en) * 2017-03-29 2017-06-13 山东铂铠环保科技有限公司 A kind of method of waste oil regeneration base oil
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109852464A (en) * 2019-03-15 2019-06-07 内蒙古大江润业环保科技有限公司 New lubricating oil technology of waste oil regenerating method
CN114085683A (en) * 2021-11-23 2022-02-25 湖北科润石化科技有限公司 Process for preparing lubricating oil base oil by hydrogenating and regenerating waste lubricating oil
CN114164022A (en) * 2021-11-24 2022-03-11 成都前成科技有限公司 Etherification and solvent refining process of plastic reclaimed oil
CN114164022B (en) * 2021-11-24 2023-06-09 成都前成科技有限公司 Etherification and solvent refining process for plastic reclaimed oil
CN114177657A (en) * 2021-12-23 2022-03-15 安徽国孚凤凰科技有限公司 Coalescence-separation type saturated oil separation recovery device and method for base oil solvent extraction extract
CN114177657B (en) * 2021-12-23 2023-03-10 安徽国孚凤凰科技有限公司 Coalescence-separation type saturated oil separation recovery device and method for base oil solvent extraction extract
CN114317094A (en) * 2021-12-27 2022-04-12 江苏洋井环保服务有限公司 Pollution-reducing continuous regeneration pretreatment device and process for waste engine oil
CN114288710A (en) * 2021-12-28 2022-04-08 安徽国孚凤凰科技有限公司 Desensitizing device and method for NMP solvent after base oil extraction and refining

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