CN102604732A - Static mixed rotational flow separation and extraction process of regenerative base oil N-methyl pyrrolidone - Google Patents
Static mixed rotational flow separation and extraction process of regenerative base oil N-methyl pyrrolidone Download PDFInfo
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- CN102604732A CN102604732A CN2012100352571A CN201210035257A CN102604732A CN 102604732 A CN102604732 A CN 102604732A CN 2012100352571 A CN2012100352571 A CN 2012100352571A CN 201210035257 A CN201210035257 A CN 201210035257A CN 102604732 A CN102604732 A CN 102604732A
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Abstract
The invention relates to a static mixed rotational flow separation and extraction process of regenerative base oil N-methyl pyrrolidone, comprising the following steps in sequence: (a) carrying out sedimentation of used oil and removing moisture and solid impurities; (b) filtering by a filter, and removing tiny solid particles and colloids; (c) adding sodium hydroxide solution and flocculating; (d) removing floccules and residual sodium hydroxide solution; (e) carrying out reduced pressure distillation by a distiller, and collecting distillate oil; (f) mixing the distillate oil with organic solvent by a static mixer on line; (g) separating out raffinate oil and raffinate oil containing organic solvent from mixed liquor by a swirler; (h) carrying out the reduced pressure distillation on the raffinate oil by a climbing film evaporator, and removing the organic solvent in the raffinate oil; and (i) carrying out the reduced pressure distillation by a molecule (short range) distiller, removing residual organic solvent and peculiar smell gas, and obtaining the regenerative base oil. The separation and extraction process provided by the invention has the advantages of conciseness in procedure, safety in operation, less equipment investment, high product yield, energy conservation, environmental friendliness and the like.
Description
(1) technical field
The present invention relates to a kind of fine chemical product production technique, be specifically related to a kind of regeneration base oil N-Methyl pyrrolidone static mixing rotational flow separation extraction process.
(2) background technology
Lubricating oil is widely used in industries such as communications and transportation, mechanical workouts, owing to receive the influence of various unfavorable factors under the applying working condition, can lose its functions of use gradually, loses using value, must change.The lubricating oil that changes is called used oil.Used oil through certain processing means preparation regeneration base oil, is reconciled into oil circulation then and uses, and is the new way of a kind of environmental protection, energy-conservation and comprehensive utilization of resources.
At present; What domestic regenerating waste oil field was commonly used is " underpressure distillation-sulfuric acid-carclazyte " technology, and advanced " underpressure distillation-furfural extracting-carclazyte " reclaiming process that to be refining institute of Luoyang Petrochemical engineering corporation develop with Shanghai lubricating oil plant jointly of tool." underpressure distillation-sulfuric acid-carclazyte " technology is that used oil is filtered through natural subsidence, strainer, adds the sodium hydroxide solution flocculation again, removes wherein moisture, solid particulate, colloid etc., uses the distiller underpressure distillation then, collects distillate; Distillate obtains the base oil of regenerating after using sulfuric acid and clay finishing." underpressure distillation-furfural extracting-carclazyte " also is earlier used oil to be filtered through natural subsidence, strainer; Add the sodium hydroxide solution flocculation again; Remove wherein moisture, solid particulate, colloid etc., get into the distiller underpressure distillation then, the distillate of collection is used earlier the furfural extracting; Use clay finishing again, product is the regeneration base oil.The yield of " underpressure distillation-sulfuric acid-carclazyte " technology regeneration base oil is low, second-rate, and regenerative process has a large amount of SO
2Waste gas, waste sulphuric acid residue, useless clay dregs, useless washing lotion discharging, secondary pollution is serious, for the national environmental protection rules do not allow, belongs to superseded Technology.In " underpressure distillation-furfural extracting-carclazyte " technology, the furfural extracting is that distillate is mixed in extraction tower with furfural, and extraction tower equipment input ratio is bigger, and consumption of power; Be easy to generate emulsion during the furfural extracting, separate relatively difficulty; The extractive finish of furfural is lower than height, regeneration base oil yield; Furfural has certain toxicity, and the person and environment are had harm, can not adapt to environmental protection requirement; In addition, adopt clay finishing, not only reduced the yield of regeneration base oil, increased production cost, and the depleted carclazyte also can produce certain harm to environment.
(3) summary of the invention
The objective of the invention is to overcome the defective of existing method, a kind of more reasonable, economic regeneration base oil N-Methyl pyrrolidone static mixing rotational flow separation extraction process is provided.To achieve these goals, regeneration base oil N-Methyl pyrrolidone static mixing rotational flow separation extraction process of the present invention, its steps in sequence is:
(a) used oil natural subsidence in storage tank was removed sedimentary moisture in bottom and solid impurity after 48 hours;
(b) used oil filters with 40 purpose strainers again, removes small solid particulate, colloid;
(c) adding weight percent concentration in the used oil is that 50% sodium hydroxide solution flocculates, and the add-on of sodium hydroxide solution is 4% of a used oil weight;
(d) used oil after the flocculation removes throw out and remaining sodium hydroxide solution;
(e) above-mentioned pretreated used oil uses the distiller underpressure distillation, collects distillate;
(f) distillate and organic solvent are through the static mixer on-line mixing, and the weight ratio of distillate and organic solvent is 1: 0.6～1.0;
(g) mixed solution uses swirler-to isolate to contain raffinating oil of a small amount of organic solvent and contains the organic solvent of extracting oil out;
(h) contain raffinating oil of a small amount of organic solvent and get into the climbing-film evaporator underpressure distillation, remove organic solvent wherein;
(i) use the underpressure distillation of molecule (short distance) distiller, remove remaining organic solvent and gas with foreign flavor, obtain the base oil of regenerating.
Wherein: organic solvent is a N-Methyl pyrrolidone.
Wherein: distillate and N-Methyl pyrrolidone are through the static mixer on-line mixing, and the weight ratio of distillate and N-Methyl pyrrolidone is 1: 0.8.
Wherein: mixed solution uses swirler-to isolate to contain raffinating oil of a small amount of organic solvent and contains the organic solvent of extracting oil out.
Because adopt technique scheme, the present invention has following advantage:
(1) the N-Methyl pyrrolidone extracting can not produce emulsion, and two phase phase-splittings are easy.
(2) N-Methyl pyrrolidone is compared with furfural, and it is nearly 50% that production identical viscosities exponential regeneration base oil consumption of organic solvent reduces, and extraction temperature is low more than 30 ℃, and different with treated oil viscosity height, yield improves 2% to 5%.
(3) there is the too high and not enough problem of refining depth of solvent ratio in furfural when HV regeneration base oil is made with extra care; And N-Methyl pyrrolidone has bigger solvability and good selectivity, makes it when refining HV is regenerated base oil, can reach suitable solvent ratio and higher refining depth.
(4) N-Methyl pyrrolidone has the favorable environment protection ability, and toxicity is little, and is little to the person and environmental hazard.
(5) static mixer and hydrocyclone structure are simple, cost is low, floor space is little, in light weight, flexible for installation, energy consumption is low, process adjustments wide ranges, flexibility are good;
(6) save clay-filtered operation, avoided clay dregs that environment is polluted, improved the regeneration base oil yield simultaneously.
(4) embodiment
Come further to set forth the present invention according to the detailed description of specific embodiment below.
The used oil of collecting is placed storage tank, and normal temperature held 48 hours is separated wherein moisture and bigger solid impurity after sedimentation at the bottom of the jar.Used oil after settlement separate uses 40 purpose strainers to filter, and adds weight percent concentration again and is 50% sodium hydroxide solution and flocculate, and the add-on of sodium hydroxide solution is 4% of a used oil weight.Used oil after the flocculation removes throw out and remaining sodium hydroxide solution, uses the distiller underpressure distillation, obtains distillate.Distillate gets into static mixer through pipeline; Simultaneously, N-Methyl pyrrolidone also gets into static mixer from another pipeline, and the weight ratio of control distillate and N-Methyl pyrrolidone is 1: 0.8; Both mix the back high speed, tangentially get in the swirler-in static mixer; Under action of centrifugal force, the riser that contains the spin current device of raffinating oil of little amount of N-SL 1332 overflows, and discharges from the underflow opening of swirler-and contain the N-Methyl pyrrolidone of extracting oil out.Collection contains raffinating oil of little amount of N-SL 1332 to be sent in the climbing-film evaporator; Underpressure distillation removes N-Methyl pyrrolidone under absolute pressure 13.3kPa, 140 ℃ of conditions of temperature; Get into molecule (short distance) distiller at last; In absolute pressure is that underpressure distillation removes remaining N-Methyl pyrrolidone and gas with foreign flavor under 0.7kPa, 200 ℃ of conditions of temperature, obtains the base oil of regenerating.
Claims (4)
1. regeneration base oil static mixing N-Methyl pyrrolidone extracting rotational flow separation technology, its steps in sequence is:
(a) used oil natural subsidence in storage tank was removed sedimentary moisture in bottom and solid impurity after 48 hours;
(b) used oil filters with 40 purpose strainers again, removes small solid particulate, colloid;
(c) adding weight percent concentration in the used oil is that 50% sodium hydroxide solution flocculates, and the add-on of sodium hydroxide solution is 4% of a used oil weight;
(d) used oil after the flocculation removes throw out and remaining sodium hydroxide solution;
(e) above-mentioned pretreated used oil uses the distiller underpressure distillation, collects distillate;
(f) distillate and organic solvent are through the static mixer on-line mixing, and the weight ratio of distillate and organic solvent is 1: 0.6～1.0;
(g) mixed solution uses swirler-to isolate to contain raffinating oil of a small amount of organic solvent and contains the organic solvent of extracting oil out;
(h) contain raffinating oil of a small amount of organic solvent and get into the climbing-film evaporator underpressure distillation, remove organic solvent wherein;
(i) use the underpressure distillation of molecule (short distance) distiller, remove remaining organic solvent and gas with foreign flavor, obtain the base oil of regenerating.
2. regeneration base oil N-Methyl pyrrolidone static mixing rotational flow separation extraction process according to claim 1, wherein: organic solvent is a N-Methyl pyrrolidone.
3. regeneration base oil N-Methyl pyrrolidone static mixing rotational flow separation extraction process according to claim 1; Wherein: distillate and N-Methyl pyrrolidone are through the static mixer on-line mixing, and the weight ratio of distillate and N-Methyl pyrrolidone is 1: 0.8.
4. regeneration base oil N-Methyl pyrrolidone static mixing rotational flow separation extraction process according to claim 1, wherein: mixed solution uses swirler-to isolate to contain raffinating oil of little amount of N-SL 1332 and contains the N-Methyl pyrrolidone of extracting oil out.
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| CN104178332A (en) * | 2014-08-11 | 2014-12-03 | 安徽国孚润滑油工业有限公司 | Two-way solvent extraction method of regenerated base oil |
| CN104560147A (en) * | 2013-10-25 | 2015-04-29 | 张伟民 | Method of removing sulfur and aromatic hydrocarbon from base oil regenerated from waste lubricating oil |
| CN105754704A (en) * | 2016-03-18 | 2016-07-13 | 安徽国孚润滑油工业有限公司 | Method for increasing yield of base oil by adopting extracted solution for secondary extraction |
| CN105778990A (en) * | 2016-04-21 | 2016-07-20 | 廖莱 | Process for refining clean fuel and lubricant base oil based on waste engine oil |
| CN106634037A (en) * | 2016-12-31 | 2017-05-10 | 晨光生物科技集团股份有限公司 | Capsanthin solvent extracting solution evaporation method and device |
| CN106867568A (en) * | 2015-12-10 | 2017-06-20 | 中国石油天然气股份有限公司 | Double tank pre-extracted devices and double tank pre-extracted methods |
| CN106967362A (en) * | 2017-03-23 | 2017-07-21 | 覃淑兰 | A kind of low temperature resistant asphalt waterproofing paint and preparation method thereof |
| CN107400556A (en) * | 2017-09-05 | 2017-11-28 | 江苏川钿电气机械有限公司 | The renovation process of waste lubricating oil |
| CN107474933A (en) * | 2017-09-20 | 2017-12-15 | 张全英 | A kind of method that base oil is extracted from used oil |
| CN107513458A (en) * | 2017-09-05 | 2017-12-26 | 江苏川钿电气机械有限公司 | The refined renovation process of waste lubricating oil |
| CN108085121A (en) * | 2017-12-22 | 2018-05-29 | 常州菲纳斯能源科技有限公司 | Waste lubricant oil regeneration and the processing method for recycling aromatic hydrocarbons |
| CN108148673A (en) * | 2017-12-28 | 2018-06-12 | 上海天汉环境资源有限公司 | A kind of extractant for being used to lubricate oil decolorization and the extraction process extracted using it |
| CN108531213A (en) * | 2018-04-26 | 2018-09-14 | 杭州立佳环境服务有限公司 | A kind of purification recovery process of VOCs machine oil elution absorbing liquid |
| CN109401828A (en) * | 2017-08-15 | 2019-03-01 | 湖北爱国石化有限公司 | A kind of regenerating waste oil production technology |
| CN109701509A (en) * | 2019-02-19 | 2019-05-03 | 安徽国孚凤凰科技有限公司 | Regenerating unit and method after a kind of silica gel absorption extracting Reclaimed Base Oil |
| CN109731561A (en) * | 2019-02-19 | 2019-05-10 | 安徽国孚凤凰科技有限公司 | De-oiling desorption column feeding device and its process after a kind of silica gel absorption |
| CN110484345A (en) * | 2019-07-29 | 2019-11-22 | 四川绿艺华福石化科技有限公司 | A kind of method for regenerating waste lubricating oil |
| CN111849604A (en) * | 2020-07-20 | 2020-10-30 | 安徽国孚凤凰科技有限公司 | Waste lubricating oil distillate oil extraction regeneration process |
| CN114317093A (en) * | 2021-12-23 | 2022-04-12 | 安徽国孚凤凰科技有限公司 | Extraction device and method for distillation distillate oil of waste lubricating oil |
| CN115612548A (en) * | 2022-10-31 | 2023-01-17 | 鲁西化工集团股份有限公司煤化工一分公司 | Waste oil refining method |
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| CN104560147A (en) * | 2013-10-25 | 2015-04-29 | 张伟民 | Method of removing sulfur and aromatic hydrocarbon from base oil regenerated from waste lubricating oil |
| CN104178332A (en) * | 2014-08-11 | 2014-12-03 | 安徽国孚润滑油工业有限公司 | Two-way solvent extraction method of regenerated base oil |
| CN106867568B (en) * | 2015-12-10 | 2018-07-13 | 中国石油天然气股份有限公司 | Double tank pre-extracted devices and double tank pre-extracted methods |
| CN106867568A (en) * | 2015-12-10 | 2017-06-20 | 中国石油天然气股份有限公司 | Double tank pre-extracted devices and double tank pre-extracted methods |
| CN105754704A (en) * | 2016-03-18 | 2016-07-13 | 安徽国孚润滑油工业有限公司 | Method for increasing yield of base oil by adopting extracted solution for secondary extraction |
| CN105778990A (en) * | 2016-04-21 | 2016-07-20 | 廖莱 | Process for refining clean fuel and lubricant base oil based on waste engine oil |
| CN106634037A (en) * | 2016-12-31 | 2017-05-10 | 晨光生物科技集团股份有限公司 | Capsanthin solvent extracting solution evaporation method and device |
| CN106634037B (en) * | 2016-12-31 | 2019-03-22 | 晨光生物科技集团股份有限公司 | A kind of capsanthin solvent extraction liquid method of evaporating and evaporation equipment |
| CN106967362A (en) * | 2017-03-23 | 2017-07-21 | 覃淑兰 | A kind of low temperature resistant asphalt waterproofing paint and preparation method thereof |
| CN106967362B (en) * | 2017-03-23 | 2019-07-26 | 深圳市朗迈新材料科技有限公司 | A kind of low temperature resistant asphalt waterproofing paint and preparation method thereof |
| CN109401828A (en) * | 2017-08-15 | 2019-03-01 | 湖北爱国石化有限公司 | A kind of regenerating waste oil production technology |
| CN107513458A (en) * | 2017-09-05 | 2017-12-26 | 江苏川钿电气机械有限公司 | The refined renovation process of waste lubricating oil |
| CN107400556A (en) * | 2017-09-05 | 2017-11-28 | 江苏川钿电气机械有限公司 | The renovation process of waste lubricating oil |
| CN107474933A (en) * | 2017-09-20 | 2017-12-15 | 张全英 | A kind of method that base oil is extracted from used oil |
| CN108085121A (en) * | 2017-12-22 | 2018-05-29 | 常州菲纳斯能源科技有限公司 | Waste lubricant oil regeneration and the processing method for recycling aromatic hydrocarbons |
| CN108148673A (en) * | 2017-12-28 | 2018-06-12 | 上海天汉环境资源有限公司 | A kind of extractant for being used to lubricate oil decolorization and the extraction process extracted using it |
| CN108531213B (en) * | 2018-04-26 | 2021-01-08 | 杭州立佳环境服务有限公司 | Purification and recovery process of VOCs engine oil leaching absorption liquid |
| CN108531213A (en) * | 2018-04-26 | 2018-09-14 | 杭州立佳环境服务有限公司 | A kind of purification recovery process of VOCs machine oil elution absorbing liquid |
| CN109731561A (en) * | 2019-02-19 | 2019-05-10 | 安徽国孚凤凰科技有限公司 | De-oiling desorption column feeding device and its process after a kind of silica gel absorption |
| CN109701509A (en) * | 2019-02-19 | 2019-05-03 | 安徽国孚凤凰科技有限公司 | Regenerating unit and method after a kind of silica gel absorption extracting Reclaimed Base Oil |
| CN109701509B (en) * | 2019-02-19 | 2023-08-08 | 安徽国孚凤凰科技有限公司 | Regeneration device and method for regenerating base oil through silica gel adsorption extraction |
| CN109731561B (en) * | 2019-02-19 | 2023-08-22 | 安徽国孚凤凰科技有限公司 | Feeding device of deoiling and desorbing tower after silica gel adsorption and process method thereof |
| CN110484345A (en) * | 2019-07-29 | 2019-11-22 | 四川绿艺华福石化科技有限公司 | A kind of method for regenerating waste lubricating oil |
| CN111849604A (en) * | 2020-07-20 | 2020-10-30 | 安徽国孚凤凰科技有限公司 | Waste lubricating oil distillate oil extraction regeneration process |
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