CN1044487A - The method of solvent complex-extraction manufacture white oil - Google Patents
The method of solvent complex-extraction manufacture white oil Download PDFInfo
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- CN1044487A CN1044487A CN 89109289 CN89109289A CN1044487A CN 1044487 A CN1044487 A CN 1044487A CN 89109289 CN89109289 CN 89109289 CN 89109289 A CN89109289 A CN 89109289A CN 1044487 A CN1044487 A CN 1044487A
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Abstract
The invention provides a kind of method with S-P-N type solvent complex-extraction manufacture grade white oil.Adopt the aromatic hydrocarbons in S-P-N type solvent and the white oil stock oil under normal temperature, normal pressure, to play the chemical complexing effect with the materials such as compound that contain N, S, O, form stable complex compound, separate aromatic hydrocarbons and the purpose that contains the materials such as compound of N, S, O in the white oil stock oil thereby reach.Whole process comprises chemical extraction, washing, clay-filtered, washing back solution distillation and solvent reclamation five parts.Raw material through chemical extraction, washing and clay-filtered after, product reaches national industrial grade white oil standard.Solution after solvent after the extraction and the washing can recycle repeatedly by regeneration.
Description
The present invention belongs to a kind of method with S-P-N type solvent complex-extraction manufacture white oil.
White oil is meant viscosity and the boiling range colourless or very white lubricating oil in lube range.White oil is divided into two big classes by the refining depth difference: the one, and industrial grade white oil; The 2nd, food-level white oil and pharmaceutical grade white oil.Industrial white oil is mainly used in the boundling of chemical fibre, textile technology synthon.Level and smooth spinning and deformation technique and mechanical position such as cotton spinning, sewing anticorrosion, lubricated.Producing the initial stage in this century that starts from of industrial white oil appears at the Soviet Union at first, be to produce white oil with the method for acid treating, up to the present, this method still in WHITE OIL PRODUCTION in the highest flight, common technical process is: white oil stock oil and oleum or SO
3Gas enters acid treatment device respectively and carries out sulfonation reaction, remove aromatic hydrocarbons and the impurity such as compound that contain N, S, O in the stock oil, discharge acid sludge from bottom of device, the sour oil of emitting from device enters respectively with alkali again and extraction plant, through the neutralization extraction, bottom of device is discharged thick sulfonate, the neutral white oil that device is emitted enters clay-filtered device, through after clay-filtered, can make high-quality white oil, clay dregs is discharged from bottom of device.This processing unit is simple, and is easy to operate.But the white oil yield is low, and the acid sludge amount is big, and is difficult to handle, and easily causes environmental pollution, in addition, since acid and oil plant generation emulsification, settlement separate difficulty, and the white oil of high viscosity grade is difficult to make by this method.The novel process of white oil has appearred producing by hydrofinishing process in the U.S. sixties.The flow process of this technology is: white oil stock oil is introduced into one-stage hydrogenation device hydrogenation, makes industrial grade white oil, and then enters the secondary hydrogenation device and make high-quality technical grade or pharmaceutical grade white oil.This technology has following advantage: (1) no waste residue is handled and problem of environmental pollution; (2) can be that ideal composition in the white oil remains oily yield height by the secondary hydrocracking with the aromatic hydrocarbons in the white oil stock oil and the impurity such as compound that contain N, S, O; (3) this technological flexibility is strong, can relax white oil stock oil claimed range.But because hydrogenation technique requires the pressure height (generally 10
7More than the pa) processing condition are quite harsh, and the equipment requirements height, investment is big, process cost is big, thereby only is applicable to the large-scale commercial production of hi-tech, and is not suitable for disperseing to produce and manage.So still based on acid treating technology, also having, the process of producing white oil at present both at home and abroad adopts the technological process of working in coordination.Along with the reinforcement of environment protection, the pollution problem of acid treating has caused the strong interest of relevant department.Therefore, study a kind of advantage of getting above two kinds of methods, and avoid the white oil course of processing of its shortcoming, be subjected to the pay attention to day by day of various countries' researcher, but, also do not have to find the report identical or similar with the present invention through consulting retrieval.
The object of the present invention is to provide a kind of method of comparatively ideal manufacture white oil.Can solve the problem of environmental pollution that adopts acid treating to bring, can also improve the yield of white oil, and cost of investment is lower than and adopts hydrorefined method to produce white oil.Can go out qualified industrial grade white oil with better simply technology and device fabrication.Be well suited for the production and operation of medium and small factory.
The invention provides a kind of method with S-P-N type solvent complex-extraction manufacture white oil.Mainly be to use a kind of strong polar organic solvent of P-N to mix by strong polar organic solvent that contains S-O and 1-6 methyl of band, be called S-P-N type solvent, wherein, contain (1-50) % that the strong polar organic solvent of S-O accounts for cumulative volume, surplus is the strong polar organic solvent of P-N of 1-6 methyl of band.Under normal temperature, the normal pressure, in the white oil raw material, add above-mentioned S-P-N type solvent, can form stable complex compound, reach the purpose that removes the impurity such as compound that contain aromatic hydrocarbons and N, S, O in the white oil stock oil.Make the finished product meet the standard of industrial grade white oil.Technical process of the present invention is: normal temperature, under the normal pressure, S-P-N type solvent is added in the extraction plant, to aromatic hydrocarbons in the white oil raw material with contain N, S, the compound of O carries out complexometric extraction, by the aromatic hydrocarbons in this solvent and the white oil stock oil with contain N, S, the complexing action of O compound, form stable complex compound, handle through extraction plant, remove aromatic hydrocarbons and contain N, S, impurity such as the compound of O, further use solution washing from the raffinate that extraction plant comes out, remove a spot of solvent in the oil plant, oil plant after carrying out washing treatment enters clay-filtered device again, remove trace solvent in the oil plant by carclazyte absorption, moisture content, materials such as colloid, the final industrial grade white oil product that gets.The extraction liquid that extraction plant comes out (solvent that promptly contains extractums such as aromatic hydrocarbons) enters vacuum distillation apparatus and regenerates, separating and extracting solvent and extractum, solvent after the regeneration can return again and recycle, and extractum can be used as chemical industry and lube stock and oil fuel and further utilizes.Solution after the washing device washing enters atmospheric distillation plant, and different by solvent and water boiling point are isolated water-soluble solvent, and this solvent enters vacuum distillation apparatus and regenerates after extraction liquid mixes.The aqueous solution can return washing device and recycle, and the clay dregs after clay-filtered can be used as the fuel utilization.
The invention has the advantages that and adopted novel S-P-N type solvent, complexation extraction can carry out at normal temperatures and pressures, thereby technology is simpler, and facility investment is few, and is easy to operate, avoided processing condition harshness in the hydrofining technology, the shortcoming that facility investment is big.In addition, acid is not used in this invention, can avoid acid sludge problem of environment pollution caused in the acid treating technology.Choose suitable process conditions, can produce qualified industrial white oil product, and the white oil yield is higher than acid treating technology.The present invention potential bigger social benefit and economic benefit.
Description of drawings:
Accompanying drawing is the process flow diagram of S-P-N type solvent complex-extraction manufacture white oil of the present invention, wherein: the 1-extraction plant; F-water;
The 2-washing device; G-washing back solution
The clay-filtered device of 3-; The h-carclazyte;
The 4-atmospheric distillation plant; The i-industrial grade white oil;
The 5-vacuum distillation apparatus.The j-clay dregs;
A-white oil stock oil; K-water;
B-S-P-N type solvent; The l-solvent;
The c-raffinate; M-regenerated S-p-N type solvent;
The d-extraction liquid; The n-extractum.
Oil plant after the e-washing
Embodiments of the invention as shown in drawings, concrete steps are to get strong polar organic solvent (2-20) the %(volume that contains S-O earlier) with the strong polar organic solvent of P-N (80-90) the %(volume of 1-6 methyl of band) be hybridly prepared into S-P-N type solvent (b), this S-P-N type solvent is the complexometric extraction solvent, with white oil stock oil (a) simultaneously with being pumped into extraction plant (1), extraction plant (1) is operated at normal temperatures and pressures, the ratio of S-P-N type solvent and white oil stock oil is to decide according to white oil raw material oil properties, and the white oil stock oil of 1 part of weight is joined the S-P-N type solvent of 3-5 part weight.Removed aromatic hydrocarbons and contained N from what extraction plant (1) came out, S, the oil plant of the compound of O, raffinate (c) just, again with being pumped into a small amount of solvent of washing device (2) flush away at raffinate (c), washings is water (f), washing device (2) is operated under 90 ℃～95 ℃ normal pressures, the ratio of oil plant and water is 1: the 1(volume), oil plant (e) after washing is by being pumped into clay-filtered device (3), with the residual trace solvent that heats up in a steamer of carclazyte (h) absorption oil plant (e), material such as moisture content and colloid, improve the performance of oil plant (e), clay-filtered device (3) is operated under 90 ℃～110 ℃ normal pressures, carclazyte (h) consumption is in 3～8%(weight) between, 30 minutes duration of contact, oil plant (e) can obtain industrial grade white oil (i) after clay-filtered device (3) is handled.The clay dregs (j) that carclazyte device (3) is discharged can be used as the fuel utilization.The solution (g) after washing that washing device (2) comes out contains the solvent that washes out on a small quantity, this solution (g) separates a small amount of S-P-N type solvent (l) that contains in water outlet (k) and the solution (g) with being pumped into atmospheric distillation plant (4), water (k) returns and recycles, after mixing, the extraction liquid (d) that a small amount of S-P-N type solvent (l) comes out with extraction plant (1) enters vacuum distillation apparatus (5) regeneration, under system pressure 4000～6000Pa, carry out underpressure distillation, separate S-P-N type solvent (m) and extractum (n), the S-P-N type solvent (m) after the regeneration recycles with pumped back extraction plant (1), extractum (n) can be used as chemical industry, the raw material or the oil fuel of lubricating oil further utilize.
Claims (4)
1, a kind of method of producing industrial white oil is characterized in that using S-P-N type solvent complex-extraction manufacture white oil.
2, method according to claim 1 is characterized in that employed S-P-N type solvent is by containing the strong polar organic solvent of S-O and being with the strong polar organic solvent of P-N of 1-6 methyl to form.
3, method according to claim 1 contains (1-50) % that the strong polar organic solvent of S-O accounts for volume in the S-P-N type solvent that it is characterized in that using, surplus is the strong polar organic solvent of P-N of 1-6 methyl of band.
4, method according to claim 1 is characterized in that handling white oil stock oil with S-P-N type solvent complexometric extraction in extraction plant, under normal temperature, normal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109289 CN1044487A (en) | 1989-12-09 | 1989-12-09 | The method of solvent complex-extraction manufacture white oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109289 CN1044487A (en) | 1989-12-09 | 1989-12-09 | The method of solvent complex-extraction manufacture white oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1044487A true CN1044487A (en) | 1990-08-08 |
Family
ID=4857935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89109289 Withdrawn CN1044487A (en) | 1989-12-09 | 1989-12-09 | The method of solvent complex-extraction manufacture white oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044487A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392185B (en) * | 2007-09-17 | 2012-11-07 | 贾中佑 | White mineral oil for polypropylene |
| CN104449839A (en) * | 2014-12-10 | 2015-03-25 | 海南汉地阳光石油化工有限公司 | Releasing agent refining equipment and releasing agent refining method |
-
1989
- 1989-12-09 CN CN 89109289 patent/CN1044487A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392185B (en) * | 2007-09-17 | 2012-11-07 | 贾中佑 | White mineral oil for polypropylene |
| CN104449839A (en) * | 2014-12-10 | 2015-03-25 | 海南汉地阳光石油化工有限公司 | Releasing agent refining equipment and releasing agent refining method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |