CA1062190A - Process and equipment for the de-asphalting of residues from vacuum distillation of petroleum, and application to the reclaiming of lubricant oils - Google Patents
Process and equipment for the de-asphalting of residues from vacuum distillation of petroleum, and application to the reclaiming of lubricant oilsInfo
- Publication number
- CA1062190A CA1062190A CA183,830A CA183830A CA1062190A CA 1062190 A CA1062190 A CA 1062190A CA 183830 A CA183830 A CA 183830A CA 1062190 A CA1062190 A CA 1062190A
- Authority
- CA
- Canada
- Prior art keywords
- propane
- oil
- column
- mixture
- oils
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003921 oil Substances 0.000 title claims abstract description 39
- 239000000314 lubricant Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003208 petroleum Substances 0.000 title description 8
- 238000005292 vacuum distillation Methods 0.000 title description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000001294 propane Substances 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 230000008929 regeneration Effects 0.000 claims abstract 2
- 238000011069 regeneration method Methods 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 11
- 230000008016 vaporization Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims 1
- 230000001172 regenerating effect Effects 0.000 claims 1
- 238000004090 dissolution Methods 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 description 13
- 238000000605 extraction Methods 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241001527806 Iti Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents
- C10G21/003—Solvent de-asphalting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
- C10G2300/1007—Used oils
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A METHOD FOR REGENERATION
OF USED LUBRICANT OILS
Applicant : WIELEZYNSI Leck Godfryd Parent Patent filed on 20th October, 1972 - N° 72 37293 First addition applied for : on 3rd November, 1978.
ABSTRACT OF THE DISCLOSURE
The invention concerns a variation of the process of the parent patent for treating polluted lubricating oil.
Previous to said treatment, the used lubricating oil is injected, in plurality of levels, into at least one reservoir containing liquid propane, where it is left for a time necessary for its disso-lution and for its primary separation from the insoluble impurities.
OF USED LUBRICANT OILS
Applicant : WIELEZYNSI Leck Godfryd Parent Patent filed on 20th October, 1972 - N° 72 37293 First addition applied for : on 3rd November, 1978.
ABSTRACT OF THE DISCLOSURE
The invention concerns a variation of the process of the parent patent for treating polluted lubricating oil.
Previous to said treatment, the used lubricating oil is injected, in plurality of levels, into at least one reservoir containing liquid propane, where it is left for a time necessary for its disso-lution and for its primary separation from the insoluble impurities.
Description
1(~6i~
The invention is concerned with a process and equipment for the separation of/asphalts and oils which form the residue from vacuum distillation of petroleum; this process may also be advantageously applied to the purification and reclaiming of lubricant oils recovered from used mineral oils, called drain oils.
The process according to the invention is founded on the known capacity of liquid propane to dissol~e, in the form~
of a selective solvent, the hydrocarbon fraction from which lubricant oils are formed, resulting in the separation and precipatition of asphalts and other non-dissolved particles which make up the material subjected to the treatment.
This property of propane has already been applied in different processes which have been put into effect in modern petroleum refineries for the production of basic lubricant oils and asphalts from the residue f~Qmv~u~
distillation, but the complicated and costly equipment for de-asphalting units of this type is only profitable for the treatment of considerable quantities of residue, and is not economic on the general scale for plant for the purification and reclaiming of used oils, the capacity of which in practice does not exceed a few metric tonnes per day.
The object of this invention is to ensure the production of basic lubricant oils from the residue from vacuum distillat-ion of petroleum, and, in particular, the de-asphalting and purification of lubricant oils from used mineral drain oils, by proposing a process capable of being put into operation on a small scale, with the use of simple and inexpensive equipment.
In large reactors, used in plants for the de-asphalting of residues from vacuum distillation of petroleum, separation of the asphalts and the lubricant oils is effected by simply mixing a specified amount of heavy hydrocarbons which have been introduced into the liquid propane, which dissolves the fraction of the lubricant oils and causes the heavier particles of hydrocarbons and other non-dissolved compounds to precipitate ~ :
to the bottom of the reactor, whilst the liquid propane, laden .: ~
.
''- '~ ~ ~ : ,.
106~
with the dissolved lubricants, being lighter, again rises to the top of the reactor, where the apparatus producing the variations in temperature facilitates this upward motion, and also the continous evacuation of the mixture, for the sub-sequent separation of the oil and its solvent, propane, then recycled the system in the liquid state.
Since the aim of this invention is to limit, as far as possible, the volume of equipment and to treat on an economic basis even small quantities of material containing lubricant oils, asphalts, carbons, and other impurities, such as mineral or meta~lic dusts, for example, which are found in suspension in the used drain oils, it is necessary to provide for means of improving the facilities of contact between the fractions of lubricant oils and their selective solvent, (propane), and also means of allowing acceleration of accurate and rapid separation of the dissolved lubricant and other materials, non-dissolved, and their precipitation.
The object of the invention is then a process for the production of basic mineral oils and of residual asphalts obtained either from the residue f~om~v,acuum distillation of petroleum, or from used drain oils, this process being of the type in which the material to be treated is placed in contact with a requisite amount of liquid propane which dissolves the fraction of oil capable of being used as lubricant, whilst the fraction of hydrocarbons and of other non-dissolved materials separates off and hastens, accurately and rapidly, separation of the dissolved oils and/propane being then obtained by vaporization of the propane, this process being characterized by the fact that, to ensure excellent contact between the oil and the propane, its selective solvent, and to obtain accurate separation and rapid precipit-ation of the asphalts and other non-dissolved materials, the treated material is injected through a pump, suitably adapted to carry out pulsed injections, at an appropriate rate and under the requisite pressure to make the treated material penetrate the extraction area, where the pressure is maintained at an adequate level in relation to the given temperature for the propane to be kept in a liquid state. The pulsed in;ections of the treated material into the liquid propane are carried out through a spraying device which causes dispersion of the material in the form of fine droplets, facilitating the dissolution of the fraction of lubricant oil~i in the propane, ' . :
lC)~
and the separation and also the precipitation of the non-dissolved fractions of the asphalts, etc. ... a great n~
of which have already deposited at the bottom of the extraction area.
The object of the invention is also a process for concentrating the dissolved lubricant, allowing it to be separated off from part of the liquid propane, characterized by the fact that the liquid propane forms a reflux at the head of the concentration area, from which a pump recycles it by pulsed injections starting at the head of the first column, against theflow of the treated material continously introduced into this column from the extraction area, which results in the rapid liberation of all the dissolved lubricant and in the precipitation of the asphalts and of the other insoluble particles in the propane.
The application to the processes outlined above of vibrations transmitted to the whole unit, either by an approp-riate assembly of the compressor when it is a question of a small-capacity plant, which is specially designed for the scrub-bing and reclaiming of drain oils, for example, or by apparatus fulfilling the same office in larger units, which are designed for the treatment of residue from vacuum distillation of petroleum, i8 also one object of this invention, since the effect of these vibrations noticeably improves the output, both in $he part of the equipment operating under high pressure where the separation and precipitation of non-soluble particles in propane takes place, and in the part of the epuipment -~
operating under low pressure and/or under vacuum where the separation of the propane and the purified lubricant take place, by vaporization of the propane which, after having been pressurized and condensed, is recycled in the liquid state in the system.
,~
The equipment used for the application of the processes which have just been briefly described are also objects of the invention.
One form of application of the invention will be described below, as a non-restrictive example, reference being made to the attached diagram, which is a plan of a unit which conforms with the invention.
.:, . . .
The residue from vacuum distillation of petroleum or used mineral drain oil, coming from tank 1, is introduced by motorized pump 2, which has been adapted to effect pulsed transfer through line 3 into extraction area 4 in which the requisite quantity of liquid propane is simultaneously introduced by line 5. As indicated above, the material to be treated is injected through a spraying device into this area, so as to ensure excellent contact with the liquid - propane, which dissolves the soluble particles of lubricant, thus facilitating the separation and precipitation of the asphalts and other insoluble particles, which begin to pre-cipitate towards the bottom of this extraction area.
; This insoluble residue can be periodically evacuated from the system by pressure to tank 6 by line 7, whilst the partially scrubbed mixture of oil and propane is transferred by a siphon and line 8 to the area of the concentration system in which final scrubbing of the dissolved lubricant takes place, com-posed of three columns, 9, 10 and 11, in which separation of the liquid propane occurs, forming a reflux at the head of these columns composed of liquid propane and a small quantity of the lightest lubricant hydrocarbons of the batch treated. Motorized pump 12 draws this reflux through line 13 at the head of column 11, continuously transferring it by means of pulsed injections through the perforated line 14 :
~; against the flow of the partially scrubbed mixture, also continuously introduced into the first column of concentration :~ area 9. The vibrations caused by the pulsed reflux injections, as well as those transmitted to the whole plant, are doubtless the main reason for the phenomenon of the formation of the . reflux in this system, operating at an appropriate pressure to keep the propane in the liquid state at a given temperature.
The result of this pulsed and continous passing of reflux is the rapid and accurate precipitation of all the molecules of hydrocarbons and other non-dissolved impu~ities in the propane, which pour off towards the bottom of columns 9 and . 10. The mixture of oil and propane, now greatly purified, is transferred through line 15, which is perforated, to within column 10; this pure mixture then passes through line 16 into ; the third column, 11, of the concentration system, whence the ~ mixture of oil and propane is introduced through the siphon and line 17 into a system of dry filters 18. At the entrance :
. , : : '. ' ::
to this filter system, the control valves no longer monitor the high pressure, and the expansion of the vaporizing propane commences. Vaporization of the propane, passing to the gaseous state, causes a sufficlent drop in temperature in the filter cylinders to eliminate all traces of any humidity pos-sibly contained in the mixture. The mixture of oll and propane then flows through line 19 into evaporator coil 20, which is heated by heat-exchange with propane gas passing through a similar coil 21, which conveys it from heated tank 22 to compressor 23 by line 5 for compression, condensation and re-cycling in the extraction area in the liquid state. The clean oil, now separated from its solvent, propane, is withdrawn periodically or continously into 24. The asphalts and other residual products are periodically sent by pressure from the system at the bottom of areas 4, 9, 10 and 11 through line 7 to heated tank 6, from which the propane gas is drawn up by the compressor through line 25, to be recycled in the liquid state by line 5 in the extraction area, whil~t the asphalts and other reæidues are evacuated through 26. The volume of propane in the system can be made up from reserves, 27, by line 28, which brings it to the compressor to be ~ f~
and introduced into the system.
An advantageous form of arrangement of this type of apparatus, particularly for a unit treating small quantities of material, is for the unit to be assembled on a rigid platform, for example, on four legs and on two levels. The motorized compressor is fixed to the floor of the second level and transmits its vibrations to the entire plant.
.. : .
The invention is concerned with a process and equipment for the separation of/asphalts and oils which form the residue from vacuum distillation of petroleum; this process may also be advantageously applied to the purification and reclaiming of lubricant oils recovered from used mineral oils, called drain oils.
The process according to the invention is founded on the known capacity of liquid propane to dissol~e, in the form~
of a selective solvent, the hydrocarbon fraction from which lubricant oils are formed, resulting in the separation and precipatition of asphalts and other non-dissolved particles which make up the material subjected to the treatment.
This property of propane has already been applied in different processes which have been put into effect in modern petroleum refineries for the production of basic lubricant oils and asphalts from the residue f~Qmv~u~
distillation, but the complicated and costly equipment for de-asphalting units of this type is only profitable for the treatment of considerable quantities of residue, and is not economic on the general scale for plant for the purification and reclaiming of used oils, the capacity of which in practice does not exceed a few metric tonnes per day.
The object of this invention is to ensure the production of basic lubricant oils from the residue from vacuum distillat-ion of petroleum, and, in particular, the de-asphalting and purification of lubricant oils from used mineral drain oils, by proposing a process capable of being put into operation on a small scale, with the use of simple and inexpensive equipment.
In large reactors, used in plants for the de-asphalting of residues from vacuum distillation of petroleum, separation of the asphalts and the lubricant oils is effected by simply mixing a specified amount of heavy hydrocarbons which have been introduced into the liquid propane, which dissolves the fraction of the lubricant oils and causes the heavier particles of hydrocarbons and other non-dissolved compounds to precipitate ~ :
to the bottom of the reactor, whilst the liquid propane, laden .: ~
.
''- '~ ~ ~ : ,.
106~
with the dissolved lubricants, being lighter, again rises to the top of the reactor, where the apparatus producing the variations in temperature facilitates this upward motion, and also the continous evacuation of the mixture, for the sub-sequent separation of the oil and its solvent, propane, then recycled the system in the liquid state.
Since the aim of this invention is to limit, as far as possible, the volume of equipment and to treat on an economic basis even small quantities of material containing lubricant oils, asphalts, carbons, and other impurities, such as mineral or meta~lic dusts, for example, which are found in suspension in the used drain oils, it is necessary to provide for means of improving the facilities of contact between the fractions of lubricant oils and their selective solvent, (propane), and also means of allowing acceleration of accurate and rapid separation of the dissolved lubricant and other materials, non-dissolved, and their precipitation.
The object of the invention is then a process for the production of basic mineral oils and of residual asphalts obtained either from the residue f~om~v,acuum distillation of petroleum, or from used drain oils, this process being of the type in which the material to be treated is placed in contact with a requisite amount of liquid propane which dissolves the fraction of oil capable of being used as lubricant, whilst the fraction of hydrocarbons and of other non-dissolved materials separates off and hastens, accurately and rapidly, separation of the dissolved oils and/propane being then obtained by vaporization of the propane, this process being characterized by the fact that, to ensure excellent contact between the oil and the propane, its selective solvent, and to obtain accurate separation and rapid precipit-ation of the asphalts and other non-dissolved materials, the treated material is injected through a pump, suitably adapted to carry out pulsed injections, at an appropriate rate and under the requisite pressure to make the treated material penetrate the extraction area, where the pressure is maintained at an adequate level in relation to the given temperature for the propane to be kept in a liquid state. The pulsed in;ections of the treated material into the liquid propane are carried out through a spraying device which causes dispersion of the material in the form of fine droplets, facilitating the dissolution of the fraction of lubricant oil~i in the propane, ' . :
lC)~
and the separation and also the precipitation of the non-dissolved fractions of the asphalts, etc. ... a great n~
of which have already deposited at the bottom of the extraction area.
The object of the invention is also a process for concentrating the dissolved lubricant, allowing it to be separated off from part of the liquid propane, characterized by the fact that the liquid propane forms a reflux at the head of the concentration area, from which a pump recycles it by pulsed injections starting at the head of the first column, against theflow of the treated material continously introduced into this column from the extraction area, which results in the rapid liberation of all the dissolved lubricant and in the precipitation of the asphalts and of the other insoluble particles in the propane.
The application to the processes outlined above of vibrations transmitted to the whole unit, either by an approp-riate assembly of the compressor when it is a question of a small-capacity plant, which is specially designed for the scrub-bing and reclaiming of drain oils, for example, or by apparatus fulfilling the same office in larger units, which are designed for the treatment of residue from vacuum distillation of petroleum, i8 also one object of this invention, since the effect of these vibrations noticeably improves the output, both in $he part of the equipment operating under high pressure where the separation and precipitation of non-soluble particles in propane takes place, and in the part of the epuipment -~
operating under low pressure and/or under vacuum where the separation of the propane and the purified lubricant take place, by vaporization of the propane which, after having been pressurized and condensed, is recycled in the liquid state in the system.
,~
The equipment used for the application of the processes which have just been briefly described are also objects of the invention.
One form of application of the invention will be described below, as a non-restrictive example, reference being made to the attached diagram, which is a plan of a unit which conforms with the invention.
.:, . . .
The residue from vacuum distillation of petroleum or used mineral drain oil, coming from tank 1, is introduced by motorized pump 2, which has been adapted to effect pulsed transfer through line 3 into extraction area 4 in which the requisite quantity of liquid propane is simultaneously introduced by line 5. As indicated above, the material to be treated is injected through a spraying device into this area, so as to ensure excellent contact with the liquid - propane, which dissolves the soluble particles of lubricant, thus facilitating the separation and precipitation of the asphalts and other insoluble particles, which begin to pre-cipitate towards the bottom of this extraction area.
; This insoluble residue can be periodically evacuated from the system by pressure to tank 6 by line 7, whilst the partially scrubbed mixture of oil and propane is transferred by a siphon and line 8 to the area of the concentration system in which final scrubbing of the dissolved lubricant takes place, com-posed of three columns, 9, 10 and 11, in which separation of the liquid propane occurs, forming a reflux at the head of these columns composed of liquid propane and a small quantity of the lightest lubricant hydrocarbons of the batch treated. Motorized pump 12 draws this reflux through line 13 at the head of column 11, continuously transferring it by means of pulsed injections through the perforated line 14 :
~; against the flow of the partially scrubbed mixture, also continuously introduced into the first column of concentration :~ area 9. The vibrations caused by the pulsed reflux injections, as well as those transmitted to the whole plant, are doubtless the main reason for the phenomenon of the formation of the . reflux in this system, operating at an appropriate pressure to keep the propane in the liquid state at a given temperature.
The result of this pulsed and continous passing of reflux is the rapid and accurate precipitation of all the molecules of hydrocarbons and other non-dissolved impu~ities in the propane, which pour off towards the bottom of columns 9 and . 10. The mixture of oil and propane, now greatly purified, is transferred through line 15, which is perforated, to within column 10; this pure mixture then passes through line 16 into ; the third column, 11, of the concentration system, whence the ~ mixture of oil and propane is introduced through the siphon and line 17 into a system of dry filters 18. At the entrance :
. , : : '. ' ::
to this filter system, the control valves no longer monitor the high pressure, and the expansion of the vaporizing propane commences. Vaporization of the propane, passing to the gaseous state, causes a sufficlent drop in temperature in the filter cylinders to eliminate all traces of any humidity pos-sibly contained in the mixture. The mixture of oll and propane then flows through line 19 into evaporator coil 20, which is heated by heat-exchange with propane gas passing through a similar coil 21, which conveys it from heated tank 22 to compressor 23 by line 5 for compression, condensation and re-cycling in the extraction area in the liquid state. The clean oil, now separated from its solvent, propane, is withdrawn periodically or continously into 24. The asphalts and other residual products are periodically sent by pressure from the system at the bottom of areas 4, 9, 10 and 11 through line 7 to heated tank 6, from which the propane gas is drawn up by the compressor through line 25, to be recycled in the liquid state by line 5 in the extraction area, whil~t the asphalts and other reæidues are evacuated through 26. The volume of propane in the system can be made up from reserves, 27, by line 28, which brings it to the compressor to be ~ f~
and introduced into the system.
An advantageous form of arrangement of this type of apparatus, particularly for a unit treating small quantities of material, is for the unit to be assembled on a rigid platform, for example, on four legs and on two levels. The motorized compressor is fixed to the floor of the second level and transmits its vibrations to the entire plant.
.. : .
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for regeneration of used lubricant oils, comprising spraying used lubricant oil in pulse into the top of a first column, introducing liquid propane into said first column to dissolve a regenerative fraction of the oil therein, removing the thus formed solution of propane and oil fraction from the top of the column along with propane, and undissolved oil in admixture therewith removing insoluble residue of the oil from the bottom of the column, passing the mixture of oil, propane and oil dissolved in propane successively in a plurality of further columns disposed in series, said mixture being introduced successively into each of said further columns, introducing into one of the further columns, at the top thereof, propane in pulses in counter current flow in said one column with said mixture introduced therein, removing, at the bottom of the further columns, impurities which settle by gravitation in said further columns, removing from the last column a solution of the oil in liquid propane, and separating the oil thus purified from the liquid propane by vaporization of the latter.
2. A method as claimed in claim 1 comprising imposing mechanical vibration to said columns in order to effect better contact between the propane and the oil to be regenerated.
3. A method as claimed in claim 2 comprising compressing the vaporized propane following the separation of the oil therefrom to liquefy the propane and recycling the thus liquefied propane to said first column.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7237293A FR2203871B1 (en) | 1972-10-20 | 1972-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1062190A true CA1062190A (en) | 1979-09-11 |
Family
ID=9105977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA183,830A Expired CA1062190A (en) | 1972-10-20 | 1973-10-19 | Process and equipment for the de-asphalting of residues from vacuum distillation of petroleum, and application to the reclaiming of lubricant oils |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3870625A (en) |
| AT (1) | AT331378B (en) |
| CA (1) | CA1062190A (en) |
| CH (1) | CH582744A5 (en) |
| DE (1) | DE2353156A1 (en) |
| FR (1) | FR2203871B1 (en) |
| GB (1) | GB1415920A (en) |
| OA (1) | OA04569A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154670A (en) * | 1975-11-24 | 1979-05-15 | The Lubrizol Corporation | Method of rerefining oil by dilution, clarification and extraction |
| US4265734A (en) * | 1979-11-01 | 1981-05-05 | Wielezynski Lech G | Method for regeneration of used lubricant oils |
| US4302325A (en) * | 1980-10-28 | 1981-11-24 | Delta Central Refining, Inc. | Solvent extraction process for rerefining used lubricating oil |
| US4399025A (en) * | 1980-10-28 | 1983-08-16 | Delta Central Refining, Inc. | Solvent extraction process for rerefining used lubricating oil |
| US4342645A (en) * | 1980-10-28 | 1982-08-03 | Delta Central Refining, Inc. | Method of rerefining used lubricating oil |
| US4360420A (en) * | 1980-10-28 | 1982-11-23 | Delta Central Refining, Inc. | Distillation and solvent extraction process for rerefining used lubricating oil |
| IT1137280B (en) * | 1981-07-07 | 1986-09-03 | Assoreni E Snamprogetti Spa | PROCEDURE FOR RECOVERY OF EXHAUSTED OILS |
| US5286380A (en) * | 1990-05-14 | 1994-02-15 | Petroleum Technology Corporation | Apparatus for contaminated oil reclamation |
| RU2131907C1 (en) * | 1997-12-23 | 1999-06-20 | Яковлев Сергей Павлович | Method of dewaxing heavy hydrocarbon fractions |
| RU2168534C1 (en) * | 1999-12-10 | 2001-06-10 | Цегельский Валерий Григорьевич | Method for deasphalting of crude oil and crude oil deasphalting installation for implementation of the method |
| US6821413B1 (en) * | 2000-08-31 | 2004-11-23 | Fluidphase Technologies, Inc. | Method and apparatus for continuous separation and reaction using supercritical fluid |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB527299A (en) * | 1938-06-04 | 1940-10-07 | Standard Oil Dev Co | An improved solvent extraction process |
| US2196989A (en) * | 1938-07-11 | 1940-04-16 | Phillips Petroleum Co | Process for treating hydrocarbons |
| US2667407A (en) * | 1949-02-11 | 1954-01-26 | Standard Oil Dev Co | Liquid-liquid contact method and apparatus |
| US2850431A (en) * | 1955-12-30 | 1958-09-02 | Texas Co | Solvent deasphalting |
| US3178268A (en) * | 1960-02-25 | 1965-04-13 | Asea Ab | Liquid transport in continuous extraction apparatus |
| US3488159A (en) * | 1969-05-06 | 1970-01-06 | Atomic Energy Commission | Jet-pulsed liquid-liquid extraction column |
-
1972
- 1972-10-20 FR FR7237293A patent/FR2203871B1/fr not_active Expired
-
1973
- 1973-10-17 GB GB4827573A patent/GB1415920A/en not_active Expired
- 1973-10-17 US US407157A patent/US3870625A/en not_active Expired - Lifetime
- 1973-10-19 CH CH1481373A patent/CH582744A5/xx not_active IP Right Cessation
- 1973-10-19 DE DE19732353156 patent/DE2353156A1/en not_active Ceased
- 1973-10-19 CA CA183,830A patent/CA1062190A/en not_active Expired
- 1973-10-19 AT AT888973A patent/AT331378B/en not_active IP Right Cessation
- 1973-10-19 OA OA55061A patent/OA04569A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2353156A1 (en) | 1974-04-25 |
| US3870625A (en) | 1975-03-11 |
| AT331378B (en) | 1976-08-25 |
| FR2203871B1 (en) | 1975-01-03 |
| FR2203871A1 (en) | 1974-05-17 |
| ATA888973A (en) | 1975-11-15 |
| OA04569A (en) | 1980-05-31 |
| GB1415920A (en) | 1975-12-03 |
| CH582744A5 (en) | 1976-12-15 |
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