CN104893767A - A production process of high-quality fuel oil from waste engine oil - Google Patents
A production process of high-quality fuel oil from waste engine oil Download PDFInfo
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- CN104893767A CN104893767A CN201510253793.2A CN201510253793A CN104893767A CN 104893767 A CN104893767 A CN 104893767A CN 201510253793 A CN201510253793 A CN 201510253793A CN 104893767 A CN104893767 A CN 104893767A
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Abstract
A production process of high-quality fuel oil from waste engine oil is provided. The process includes distilling the waste engine oil to obtain crude fuel oil, adding an extractant that is N,N-dimethylformamide, extracting to obtain an upper-layer extract, adding an absorbent, and processing to obtain a finished fuel oil product with a yield of 95.7-96.1%. Operating steps of the process are free of discharge of pollutants. The prepared finished fuel oil product is high in quality and free of wax, the density (at 25 DEG C) of the finished product is 0.88-0.92 g/cm<3>, kinematic viscosity (at 80 DEG C) of the finished product is 30-36 mm<2>.s, the condensation point of the finished product ranges from -18 DEG C to -22 DEG C, the flash point of the finished product is 90-100 DEG C, the ash content is 0.04-0.06%, the content of mechanical impurities is 0.06-0.08%, and the water content is 0.4-0.5%.
Description
Technical field
The invention provides a kind of production technique of oil fuel, be specifically related to the production technique of a kind of used oil processing high-quality oil fuel, belong to technology of waste oil regenerating field.
Background technology
Increase with automobile usage quantity, the amount producing used oil is increasing, forms a kind of new source of pollution gradually.
Present waste used oil processing mode has two kinds substantially.
One is acid-alkali washing, then adsorption filtration, and again as the application of machine oil base oil, the acid sludge acid solution of generation cannot harmlessly process, and produces secondary pollution to environment; The used oil used still more is because of through high temperature, high pressure, oxidation reason, and chemical composition changes, and the quality of lubrication oil of production is defective, and closed down by quality supervision department, the case that even party concerned is sentenced often occurs.
Another kind for the treatment of process is small workshop mode oil refining, Pintsch process fractionates out base oil, sells as nonstandard diesel oil, and a large amount of coking carbon residues of fractionation still become solid waste and pollute, produce a large amount of acetylene gas in Pintsch process process and enter air, severe contamination is caused to atmospheric environment; More than used oil burning-point, there is very big potential safety hazard in cut point.
summary of the invention:
the present invention is directed to above deficiency, provide a kind of production technique of used oil fabricate fuel oil, to realize following goal of the invention:
1, the quality of oil fuel prepared by used oil is improved; Make the oil fuel not content of wax of preparation, density (25 DEG C) is 0.88-0.92g/cm3, and kinematic viscosity (80 DEG C) is 30-36mm
2.s, condensation point is-18--22 DEG C, and flash-point is 90-100 DEG C;
2,the yield improving oil fuel prepared by used oil is 95.7-96.1%;
3,reduce the distillation temperature of oil fuel technique prepared by used oil;
4,production process three-waste free discharge, free from environmental pollution
.
for solving the problems of the technologies described above, by the following technical solutions:
A production technique for used oil processing high-quality oil fuel, comprises distillation, extraction, the processing of upper strata extract, by product procedure of processing.
Below the further improvement to technique scheme:
Described distillation: still kettle vacuum tightness is 86.45-99.75kpa, stops heating when being warming up to 168-171 DEG C.
Described extraction: when still kettle is cooled to 80-90 DEG C, squeezes into obtained rough oil fuel in cone tank, adds extraction agent, stirs.
Described extraction agent is N, N dimethylformamide.
The add-on of described extraction agent: often process 1m
3used oil, need add extraction agent 95-102kg during extraction.
Described stirring velocity is: 60-90rpm.
Described upper strata extract processing: sorbent material is added in the upper strata extract after separation, stir.Described sorbent material is the mixture of atlapulgite, activated alumina, carbonaceous molecular sieve.
The mass ratio of described absorbent component atlapulgite, activated alumina, carbonaceous molecular sieve is 2:1:1.
The add-on of described sorbent material is the 8-12% of upper strata extract total mass.
Adopt oil fuel quality better prepared by present invention process, the not content of wax, density (25 DEG C) is 0.88-0.92g/cm3, and kinematic viscosity (80 DEG C) is 30-36mm
2.s, condensation point is-18--22 DEG C, and flash-point is 90-100 DEG C, and ash oontent is 0.04-0.06%, and content of impurities is: 0.06-0.08%, and moisture content is: 0.4-0.5%.
the present invention compared with prior art, has following beneficial effect:
1, the oil fuel quality better prepared of the present invention, the not content of wax, density (25 DEG C) is 0.88-0.92g/cm3, and kinematic viscosity (80 DEG C) is 30-36mm
2.s, condensation point is-18--22 DEG C, and flash-point is 90-100 DEG C, and ash oontent is 0.04-0.06%, and content of impurities is: 0.06-0.08%, and moisture content is: 0.4-0.5%;
2, adopt present invention process, preparing oil fuel yield with used oil is 95.7-96.1%;
3, distillation temperature is low; Not only production process safety, saves the energy simultaneously, and operating process more easily controls;
4, the oil fuel noncoking in combustion prepared of the present invention, not containing colloid and polymer tackifying resin;
5, the present invention is prepared in oil fuel process, does not have cracking process, does not pollute air, three-waste free discharge, environmentally friendly;
6, the present invention is prepared in oil fuel process, and extraction solvent can be recycled, energy-conserving and environment-protective.
Embodiment
The production technique of embodiment 1 one kinds of used oil processing high-quality oil fuel
1, raw material
Used oil derives from the motor oil that vehicle repairing factory is changed, and its composition mainly contains hydrocarbon base oils, tackifying resin, a small amount of moisture content produced in colloidal bitumen and use procedure, mechanical impurity, residual carbon black etc.
2, distill
Loaded by 2m3 used oil in 3m3 still kettle, heating, starts its vacuum pump simultaneously, make still kettle vacuum tightness maintain 86.45-99.75kpa, be slowly warmed up to 169 DEG C, stop heating and find time, the a small amount of low-boiling-point organic compound removing the moisture content in used oil and mix, obtains rough oil fuel.
This process is beneficial to the solvent recuperation purity in following process, improves fuel oil flash.
steamdistilled mixture is low organism and the moisture content of boiling, and accounts for the 0.5-0.7% of used oil total mass.
3, extract
Still kettle lowered the temperature, when cooling to 80 DEG C, the rough oil fuel that step 2 is obtained is squeezed in the cone tank of agitating function, and add 190kg extraction agent, stir 30 minutes, stirring velocity is: 60rpm; Leave standstill 24 hours.
Described extraction agent is N, N dimethylformamide (DMF).
After leaving standstill, pot liquid divides two-layer:
Upper strata extract is the mixture of the hydrocarbon base oils immiscible with extraction agent and part carbon residue impurity;
Lower floor's extract is: the mixture of extraction agent and the non-hydrocarbon constituents be dissolved in tackifying resin wherein, colloid, pitch, base oil and mechanical impurity.
Cone tank is provided with 2 tapping holes, cone tank bottommost one, cone tank side lower part one.
Upper strata extract is discharged by the tapping hole of cone tank side lower part; Lower floor's extract is discharged by the tapping hole of cone pot bottom.
4, upper strata extract processing
Added by sorbent material in the upper strata extract after separation, the adsorbent mass added is 8% of upper strata extract total mass, stirs 30 minutes; The mixture that described sorbent material is atlapulgite, activated alumina, carbonaceous molecular sieve mix by the mass parts of 1:1:1.
By the mixture plate-and-frame filter press press filtration after stirring, remove the carbon residue and mechanical impurity that are suspended in hydrocarbon base oils, obtain the hydrocarbon fuel oil of pale yellow transparent, i.e. finished product oil fuel.
5, by product processing
(1) by product processing is distilled
Low-boiling-point organic compound step 2 slipped out and moisture content add high efficiency oil/water separator.
Isolated moisture is sent to boiler smoke de-inking system and is used.
The isolated low organism that boils can be used as paint solvent and sells.
(2) by product processing is extracted
Lower floor's extract of step 3 joins in still kettle after separating, decompression, and vacuum tightness is 86.45-99.75kpa, is warmed up to 150 DEG C, distillation.
The extraction agent distilled is capable of circulation to be used to extraction step, and after vinasse mechanical filter, the mixture obtained uses as regenerated rubber petroleum-type softening agent, accounts for the 3.4-3.6% of used oil total mass.
This technique is three-waste free discharge in process of production, and extraction solvent recycles, and product oil fuel condensation point is low, noncoking, and flash-point is high, is high-grade fuel oil; This process economics environmental protection, has accomplished real turning waste into wealth.
Embodiment 2 Solvent quantity single factor analysis is tested
Adopt the step of embodiment 1, only change the Solvent quantity in extraction step, carry out embodiment 2-4;
The Solvent quantity that embodiment 2-4 adopts is in table 1:
The Solvent quantity that table 1 embodiment 1-4 adopts
Described Solvent quantity is often process 2m3 used oil Solvent quantity used;
Fuel oil quality index prepared by embodiment 1-4 is in table 2:
Fuel oil quality index prepared by table 2 embodiment 1-4
From table 2, embodiment 3 is preferred embodiment.
Embodiment 5 absorbent component proportioning single factor analysis is tested
Adopt the step of embodiment 1, changing Solvent quantity in extraction step is 200kg, changes the mass ratio of the absorbent component in the extract procedure of processing of upper strata, carries out embodiment 5-7;
The mass ratio of the absorbent component that embodiment 5-7 adopts is in table 3:
The mass ratio of the absorbent component that table 3 embodiment 5-7 adopts
Fuel oil quality index prepared by embodiment 5-7 is in table 4:
Fuel oil quality index prepared by table 4 embodiment 5-7
From table 4, embodiment 6 is preferred embodiment.
Embodiment 8 adsorbent amount single factor analysis is tested
Adopt the step of embodiment 1, changing Solvent quantity in extraction step is 200kg, the mass ratio changing the absorbent component in the extract procedure of processing of upper strata is atlapulgite: activated alumina: carbonaceous molecular sieve is 2:1:1, change the adsorbent amount in the extract procedure of processing of upper strata, carry out embodiment 8-10;
The adsorbent amount that embodiment 8-10 adopts is in table 5:
The adsorbent amount that table 5 embodiment 8-10 adopts
Fuel oil quality index prepared by embodiment 8-10 is in table 6:
Fuel oil quality index prepared by table 6 embodiment 8-10
From table 6, embodiment 9 is preferred embodiment.
Embodiment 11 Parameters Analysis is tested
Adopt the step of embodiment 1, changing Solvent quantity in extraction step is 200kg, the mass ratio changing the absorbent component in the extract procedure of processing of upper strata is atlapulgite: activated alumina: carbonaceous molecular sieve is 2:1:1, the ratio that adsorbent amount accounts for upper strata extract total mass is 10%, change some processes parameter in distillation and extraction step, carry out embodiment 11-13;
Embodiment 11-13 change distillation and extraction step in processing parameter in table 7:
Table 7 embodiment 11-13 adopt distillation and extraction step in processing parameter
Fuel oil quality index prepared by embodiment 11-13 is in table 8:
Fuel oil quality index prepared by table 8 embodiment 11-13
From table 8, embodiment 12 is preferred embodiment.
To sum up, adopt present invention process, preparing oil fuel yield with used oil is 95.7-96.1%, the oil fuel quality better of preparation:
Density (25 DEG C) is 0.88-0.92g/cm3, and kinematic viscosity (80 DEG C) is 30-36mm
2.s, flash-point is 90-100 DEG C, and condensation point is-18--22 DEG C, and ash oontent is 0.04-0.06%, and content of impurities is: 0.06-0.08%, and moisture content is: 0.4-0.5%.
The above is the citing of best mode for carrying out the invention, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (10)
1. a production technique for used oil processing high-quality oil fuel, is characterized in that: comprise distillation, extraction, the processing of upper strata extract, by product procedure of processing.
2. the production technique of a kind of used oil processing high-quality oil fuel according to claim 1, is characterized in that: described distillation: still kettle vacuum tightness is 86.45-99.75kpa, stops heating when being warming up to 168-171 DEG C.
3. the production technique of a kind of used oil processing high-quality oil fuel according to claim 1, is characterized in that: described extraction: when still kettle is cooled to 80-90 DEG C, is squeezed in cone tank by obtained rough oil fuel, add extraction agent, stir.
4. the production technique of a kind of used oil processing high-quality oil fuel according to claim 3, is characterized in that: described extraction agent is N, N dimethylformamide.
5. the production technique of a kind of used oil processing high-quality oil fuel according to claim 3, is characterized in that: the add-on of described extraction agent: often process 1m
3used oil, need add extraction agent 95-102kg during extraction.
6. the production technique of a kind of used oil processing high-quality oil fuel according to claim 3, is characterized in that: described stirring velocity is: 60-90rpm.
7. the production technique of a kind of used oil processing high-quality oil fuel according to claim 1, is characterized in that: described upper strata extract processing: added by sorbent material in the upper strata extract after separation, stir; Described sorbent material is the mixture of atlapulgite, activated alumina, carbonaceous molecular sieve.
8. the production technique of a kind of used oil processing high-quality oil fuel according to claim 7, is characterized in that: the mass ratio of described absorbent component atlapulgite, activated alumina, carbonaceous molecular sieve is 2:1:1.
9. the production technique of a kind of used oil processing high-quality oil fuel according to claim 7, is characterized in that: the add-on of described sorbent material is the 8-12% of upper strata extract total mass.
10. the production technique of a kind of used oil processing high-quality oil fuel according to claim 1, it is characterized in that: adopt oil fuel quality better prepared by present invention process, the not content of wax, density (25 DEG C) is 0.88-0.92g/cm3, and kinematic viscosity (80 DEG C) is 30-36mm
2.s, condensation point is-18--22 DEG C, and flash-point is 90-100 DEG C, and ash oontent is 0.04-0.06%, and content of impurities is: 0.06-0.08%, and moisture content is: 0.4-0.5%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147857A (en) * | 2016-08-19 | 2016-11-23 | 董琳 | A kind of environmentally friendly internal combustion engine used oil recycling technique |
| CN108587764A (en) * | 2018-06-05 | 2018-09-28 | 山东天大高纯新材料有限公司 | Base oil after being recycled to waste lubricating oil carries out refined method |
| CN109735391A (en) * | 2019-02-19 | 2019-05-10 | 安徽国孚凤凰科技有限公司 | A method of improving solvent refining reclaimed oil base oil yield |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147857A (en) * | 2016-08-19 | 2016-11-23 | 董琳 | A kind of environmentally friendly internal combustion engine used oil recycling technique |
| CN108587764A (en) * | 2018-06-05 | 2018-09-28 | 山东天大高纯新材料有限公司 | Base oil after being recycled to waste lubricating oil carries out refined method |
| CN109735391A (en) * | 2019-02-19 | 2019-05-10 | 安徽国孚凤凰科技有限公司 | A method of improving solvent refining reclaimed oil base oil yield |
| CN109735391B (en) * | 2019-02-19 | 2021-06-04 | 安徽国孚凤凰科技有限公司 | Method for improving yield of base oil of solvent refined regenerated lubricating oil |
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