GB2487967A - Removing particles from oil - Google Patents
Removing particles from oil Download PDFInfo
- Publication number
- GB2487967A GB2487967A GB1102441.1A GB201102441A GB2487967A GB 2487967 A GB2487967 A GB 2487967A GB 201102441 A GB201102441 A GB 201102441A GB 2487967 A GB2487967 A GB 2487967A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sub
- micron particles
- oil based
- based medium
- medium according
- 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.)
- Withdrawn
Links
- 239000002245 particle Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 claims abstract description 52
- 239000000126 substance Substances 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 239000010802 sludge Substances 0.000 claims abstract description 10
- 239000013049 sediment Substances 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
- 239000000377 silicon dioxide Substances 0.000 claims description 17
- 239000003153 chemical reaction reagent Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 238000001879 gelation Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 8
- 150000004706 metal oxides Chemical class 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 230000015271 coagulation Effects 0.000 claims description 6
- 238000005345 coagulation Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 238000005054 agglomeration Methods 0.000 claims description 4
- 230000002776 aggregation Effects 0.000 claims description 4
- 235000019351 sodium silicates Nutrition 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 150000001299 aldehydes Chemical class 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 2
- 230000000996 additive effect Effects 0.000 claims 2
- 239000011449 brick Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 27
- 239000000976 ink Substances 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 238000001311 chemical methods and process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000005191 phase separation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 230000003019 stabilising effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000007385 chemical modification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D43/00—Separating particles from liquids, or liquids from solids, otherwise than by sedimentation or filtration
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Cleaning In General (AREA)
Abstract
A method of removing sub-micron particles from an oil based medium, said method comprises adding a chemical component to the oil based medium wherein the chemical component is capable of reacting and/or combining with sub-micron particles in the oil based medium to form a combined product; wherein the combined product has a larger maximum cross-sectional diameter and/or mass than the sub-micron particles and the combined product is capable of being removed from the oil based medium using a mechanical separation process. An apparatus preferably capable of carrying out the method comprises a first tank 110 capable of acting as a receptacle for the oil based medium containing sub-micron contaminating particles; a feed 115 for inputting a chemical component into the first tank; a mechanical separator capable of separating the combined product which forms as a sludge and/or sediment and cleaned oil based medium with sub-micron particles removed; a second tank 120 capable of receiving the oil based medium with the submicron particles removed; and a storage device for storing the combined product which forms a sludge and/or sediment.
Description
CHEMICAL CLEANING PROCESS
FIELD OF THE INVENTION
The present invention relates to a process and apparatus for cleaning fluids. More particularly, the present invention relates to a chemical process and apparatus for removing suspended solids from fluids such as oil based mediums.
BACKGROUND OF THE INVENTION
Although there are many known techniques to remove suspended solids from fluidic solutions (e.g. colloidal solutions) all of these prior techniques are known to have significant problems.
There are two main methods in which to remove suspended solids from fluids: (a) chemical techniques; and (b) mechanical techniques (e.g. filtration and mass differential techniques). Chemical techniques tend to be associated with aqueous systems as they rely on operating in a hydrophilic medium. Hydrophobic based solvent washes (commonly known as blanket washes) are more problematic due to the fact that they are incompatible with aqueous chemical cleaning reagents. The uses of Hydrocarbon solvents (mineral oils) are also environmentally problematic and cause give waste disposal concerns.
Mechanical techniques are problematic as mechanical separation of small particles found in colloidal solution solutions is slow as oils are thixotropic (i.e. have a viscosity that decreases when a stress is applied such as during stirring) and are difficult to filter. In addition, mechanical separation is expensive and not flexible or versatile. Low particle size inks also do not lend themselves to mechanical separation techniques.
It is an object of at least one aspect of the present invention to obviate or mitigate at least one or more of the aforementioned problems.
It is a further object of at least one aspect of the present invention to provide an improved method and apparatus for removing suspended solids from fluids such as oil based mediums used in printing presses.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a method of removing sub-micron particles from an oil based medium, said method comprising: adding a chemical component to the oil based medium wherein the chemical component is capable of reacting and/or combining with sub-micron particles in the oil based medium to form a combined product; wherein the combined product has a larger maximum cross-sectional diameter and/or mass than the sub-micron particles and the combined product is capable of being removed from the oil based medium using a mechanical separation process.
The present invention therefore relates to a chemical process which increases the size and/or mass of contaminating sub-micron particles (e.g. small colloidal particles) from contaminated oil based medium which may be in the form of a colloidal solution. The contaminated oil based medium may be ink sludge originating from printing presses which may be used to print newspapers, magazines and the like.
Typically, the sub-micron particles may initially have a very small maximum cross-sectional diameter in the nanometer range such as about 1 nanometer to 1 micron. The sub-micron particles are also very light with a weight of less than that required to settle in a fluid with a SO of less 0.9 or greater.
These very small and light particles are very difficult to remove. By increasing the size and weight of the sub-micron particles makes the particles easier to remove via conventional mechanical techniques such as mechanical separation techniques e.g. gravity separation (settling), centrifugal action and filtration.
The present invention may use at least one or more added chemical components to increase the size of the sub-micron particles. The added chemical components may be the combination of a principle reagent and an auxiliary reagent. For example, the principle reagent may be soluble sodium silicates (Na20.X5i02) and/or other metal oxides of silica which may be negatively charged. The auxiliary reagent may be polymerisers and/or gelation agents such as esters, acids, aldehydes. The soluble silicates may have a high alkalinity such as above a pH of about 9. The auxiliary reagents are capable of causing reactions due to metal ion reaction, surface charge modification or gelation and/or precipitation.
Figments used in, for example, printing inks and paints are generally surface modified to stabilise the paint or ink and prevent agglomeration or coagulation whilst standing. This surface modification can be either positive or negative charged.
Metal oxides in solution may have a negative charge. For example, silica in solution has a -2 charge. The negative charge from the metal oxides such as the soluble silica can donate this -2 charge to other materials in solution or in a dispersion. This charge donation can cause the sub-micron particles in the form of micro-dispersed or soluble particles to become negatively charged. This charge donation has the effect of stabilising the dispersions and prevents coagulation. In the presence of the auxiliary reagents listed above (or components of the waste to be treated such as multivalent cationic metal ions which may be contained in pigments in the ink composition) the silicate solutions may be destabilised and the silica system polymerises and/or gels.
Folymerisation or gelation occurs when individual silica monomers link up to form long chains of repeating Si02 units. This results in the precipitation of silica and the micro-particles that the silica has coated in the dispersion phase.
The precipitation is not only due to an increase in particle size and/or weight as a result of polymerisation and/or gelation but also due to hydrophobicity i.e. the silica and the forming deposit is water loving and therefore there is a drive towards separation in a water hating hydrophobic medium (oil).
This direction of separation is vertically down which confirms phase separation.
It should be noted that even application of air does not encourage floatation therefore phase separation is a vital step.
In the present invention and by the addition of the chemical component which increases the cross-sectional diameter and/ore mass of the sub-micron particles, coagulation and/or precipitation is caused in the oil based medium i.e. the hydrocarbon medium. Moreover, the present invention also relies on utilising a surface coating and the stabilising principle as a means of destabilising colloidal particles. In the process, a surface coating charge is therefore added to the sub-micron particles. The surface coating charge repels individual particles and stabilises dispersion and prevents agglomeration and settlement.
Thereafter, the mass of the individual stabilised particles is increased by gelation and/or polymerisation which induces settlement.
By adding the chemical components to the sub-micron particles may increase the maximum cross-sectional diameter from about 1 nm -1 micron nanometers into at least the micron range of say about 1 -1,000 microns for the combined product. This may represent an increase in maximum cross-sectional diameter of about 10 -1,000,000 fold.
The method may be used to clean oil based mediums found in a range of applications such as printing inks used in printing presses, and various contaminated oil substrates.
According to a second aspect of the present invention there is provided apparatus capable of removing sub-micron particles from an oil based medium, said apparatus comprising: a first tank capable of acting as a receptacle for the oil based medium containing sub-micron contaminating particles and aqueous emulsions a feed for inputting a chemical component into the first tank wherein the chemical component is capable of reacting and/or combining with sub-micron particles in the oil based medium to form a combined product; a mechanical separator capable of separating the combined product which forms as a sludge and/or sediment and cleaned oil based medium with sub-micron particles removed; a second tank capable of receiving the oil based medium with the sub-micron particles removed; and a storage device for storing the combined product which forms a sludge and/or sediment.
The apparatus may perform the method as defined in the first aspect.
The first tank may also comprise a mixing blade connected, for example, via a shaft to a motor. The first tank may also comprise control devices for reagent dosing, level indication, treatment time, fill and decant operations and various detection instruments to enable solid determination in settles and clarified liquors. The feed for inputting the chemical component into the first tank may be
any suitable inlet.
The chemical components may be as described in the first aspect and may be added at a rate of about 0.0 ilitre per m3 to 10 litre per m3 form a concentration of about 10 ppm to 10,000 ppm in the first tank depending on colloidal solid concentrations.
The combined mixture may be slowly mixed using a mixing blade at any suitable rate such as about 1 -100 revolutions per second. The mixing continues until the chemical components have had sufficient time to react and bond with the sub-micron particles to form the combined product. Suitable mixing times may be about 10 -60 minutes or preferably about 30 minutes.
After the mixing process the motor may be stopped to allow the combined mixture to settle. This may occur over any suitable time range such as about 20 -120 minutes or preferably about 60 minutes.
A decanting process may then occur where decanted clarified solvent (i.e. the cleaned oil solvent medium with no or substantially no sub-micron particles) may be transferred to the second tank.
The apparatus may also comprise a third tank which may function as a sludge tank.
BRIE F DESCRIPTION OF THE DRAWINGS
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings in which: Figure 1 is schematic representation of apparatus according to embodiment of the present invention.
BRIEF DESCRIPTION
Generally speaking, the present invention resides in the provision of an improved method and apparatus for removing small colloidal particle sizes from a colloidal solution.
Oil based mediums are used in a wide range of machinery for the operation of the machinery and in printing processes. This allows the machinery to operate efficiently and to have a long working lifetime. However, the oil based mediums can quickly become contaminated with small sub-micron particles that can have a serious and detrimental effect on the operation and lifetime of the machinery. The small sub-micron particles may exist as a colloidal solution and upon flocculation may come out of suspension in the form of floc and/or flakes.
The inventors of the present application have surprisingly found that the significant improvements in the removal of the sub-micron particles are achieved by increasing the size of the sub-micron particles through a chemical modification process. The chemical modification process forms combined products with much larger cross-sectional diameters which are capable of being more easily removed.
The sub-micron particles initially have a very small maximum cross-sectional diameter in the nanometer range such as about 1 nanometer -1 micron nanometers. These very small particles are very difficult to remove. By increasing the size of the sub-micron particles makes the particles easier to remove via conventional mechanical techniques such as mechanical separation techniques. The present invention is therefore capable of using existing mechanical systems already in place.
A range of chemical components are used in the present invention to increase the size of the sub-micron particles. The present invention utilises at least one or more added chemical components to increase the size of the sub-micron particles. The added chemical components are the combination of a principle reagent and an auxiliary reagent. For example, the principle reagent is selected from soluble sodium silicates (e.g. Na20.XSiO2) and/or other metal oxides of silica. The auxiliary reagents are polymerisers and/or gelation agents such as esters, acids, aldehydes and the like. The soluble silicates have a high alkalinity such as above a pH of about 9. The auxiliary reagents are capable of creating reactions due to metal ion reaction, surface charge modification or gelation and/or precipitation.
Pigments used in, for example, printing inks and paints are generally surface modified to stabilise the paint or ink and prevent agglomeration or coagulation whilst standing. This surface modification can be either positive or negative charged.
Metal oxides in solution may have a negative charge. For example, silica in solution has a -2 charge. The negative charge from the metal oxides such as the soluble silica can donate this -2 charge to other materials in solution or in a dispersion. This donation can cause the sub-micron particles in the form of micro-dispersed or soluble particles to become negatively charged. This charge donation has the effect of stabilising the dispersions and prevents coagulation. In the presence of the auxiliary reagents listed above (or components of the waste to be treated such as multivalent cationic metal ions which may be contained in pigments in the ink composition) the silicate solutions are destabilised and the silca system polymerises and/or gels.
Polymerisation or gelation occurs when individual silica monomers link up to form long chains of repeating Si02 units. This results in the precipitation of silica and the micro-particles that the silica has coated in the dispersion phase.
The precipitation is not only due to an increase in particle size as a result of polymerisation and/or gelation but also due to hydrophobicity i.e. the silica and the forming deposit is water loving and therefore there is a drive towards separation in a water hating hydrophobic medium (oil). This direction of separation is vertically down which confirms phase separation. It should be noted that even application of air does not encourage floatation therefore phase separation is a vital step.
By adding the chemical components to the sub-micron particles increases the maximum cross-sectional diameter from about 1 nanometer -1 micron nanometers into at least the micron range of say 1 -100 microns for the combined products.
Figure 1 is a representation of apparatus according to the present invention generally designated 100. The apparatus 100 comprises a first tank which is capable of functioning as a receptacle for a fluid (e.g. oil based medium) to be cleaned and small sub-micron particles removed. As shown located in the first tank 110 there is a mixing blade 111 connected via a shaft 112 to a motor 113. The apparatus 100 also comprises a level sensor 114 to prevent over-filling of the tank 110. Figure 1 also shows that the chemical component which is used to remove the sub-micron particles from the used oil solvent medium is added via inlet 115. For example, about 5 liters of chemical component may be added per m3 of oil based solvent medium to be cleaned.
The combined mixture may be slowly mixed using the mixing blade 111 at any suitable rate such as about 1 -10 revolutions per second. The mixing continues until the chemical components have had sufficient time to react and bond with the sub-micron particles to form the required combined product. Suitable mixing times may be about 10 -60 minutes or preferably about 30 minutes.
After the mixing process, then the motor 113 is stopped to allow the combined product to settle. This may occur over any suitable time range such as about 20 -120 minutes or preferably about 60 minutes.
A decanting process then occurs where decanted clarified solvent (i.e. the cleaned oil solvent medium with no or substantially no sub-micron particles) is transferred to a second tank 120. This may occur via any suitable method but in Figures 1 is shown as occurring via a pipe 116 and the use of a pump 119 (e.g. a diaphragm pump) which transfers the cleaned oil solvent medium to the second tank 120 via a pipe 118. The cleaned oil solvent medium may then be re-used via outlet 121.
The pump 117 may also be used to transfer the settled mixture which forms at the bottom of the first tank 11 0. The settled mixture is the combination of the sub-micron particles and the chemical components which forms particles with a larger size and mass which forms a sediment (e.g. sludge) at the bottom of the first tank 110.
The present invention has a number of additional advantages in that there are no deposits or corrosive aspects formed during the chemical components reacting with the sub-micron particles to form larger particles. The chemical process is therefore inert and is an environmentally friendly green low energy solution to the problem of removing the sub-micron particles. As shown above it is also possible to recycle and re-use the original/virgin solvent inputs. There are therefore significant direct cost savings in the purchase of the solvent and reductions in disposal costs. System sizes and footprints of tanks etc may also be reduced with associated reduction in capital cost inputs. There may also be reduced downtime on machinery such as on printing presses and associated reduced labour and technical support requirements.
Whilst specific embodiments of the present invention have been described above, it will be appreciated that departures from the described embodiments may still fall within the scope of the present invention. For example, any suitable type of chemicals can be used to increase the size of the sub-micron particles.
Moreover, any suitable type of apparatus may be used to remove the sediment caused by the combination of the sub-micron particles and the added chemical components used to increase the size of the sub-micron particles.
Claims (24)
- CLAIMS1. A method of removing sub-micron particles from an oil based medium, said method comprising: adding a chemical component to the oil based medium wherein the chemical component is capable of reacting and/or combining with sub-micron particles in the oil based medium to form a combined product; wherein the combined product has a larger maximum cross-sectional diameter and/or mass than the sub-micron particles and the combined product is capable of being removed from the oil based medium using a mechanical separation process.
- 2. A method of removing sub-micron particles from an oil based medium according to claim 1, wherein by the addition of the chemical component to the sub-micron particles increases the cross-sectional diameter and mass of the sub-micron particles causing coagulation and/or precipitation in the oil based medium i.e. the hydrocarbon medium.
- 3. A method of removing sub-micron particles from an oil based medium according to any of claims 1 or 2, wherein the added chemical component comprises a principle reagent in the form of a surface coating which is initially applied to the sub-micron particles and which destabilises the sub-micron particles.
- 4. A method of removing sub-micron particles from an oil based medium according to claim 3, wherein the surface coating is formed from soluble sodium silicates (e.g. Na20.XSiO2) and/or other metal oxides of silica having a negative charge and the resultant surface coating negative charge repels individual particles and stabilises dispersion and prevents agglomeration and settlement.
- 5. A method of removing sub-micron particles from an oil based medium according to claim 4, wherein the soluble silicates have a high alkalinity such as above a pH of about 9.
- 6. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein the added chemical component also comprises an auxiliary reagent in the form of polymerisers and/or gelation agents such as esters, acids, aldehydes.
- 7. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein the cross-sectional diameter and mass of the sub-micron particles is increased by gelation and/or polymerisation which induces settlement and hence facilitates removal of the sub-micron particles.
- 8. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein the sub-micron particles have a very small maximum cross-sectional diameter in the nanometer range such as about 1 -100 nanometer.
- 9. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein by increasing the size of the sub-micron particles to form the combined product makes the sub-micron particles easier to remove via conventional mechanical techniques such as mechanical separation techniques.
- 10. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein on mixing the sub-micron particles with the chemical components chemical bonds are formed between the sub-micron particles and the chemical components to form the increase sized combined products.
- 11. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein by adding the chemical components to the sub-micron particles increases the maximum cross-sectional diameter from about 1 -100 nanometers into at least the micron range of say 1 -100 microns for the combined products.
- 12. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein the chemical components are added to the oil based medium.
- 13. A method of removing sub-micron particles from an oil based medium according to claim 12, wherein the combined mixture is slowly mixed using a mixing blade at any suitable rate such as about 1 -10 revolutions per second wherein the mixing continues until the chemical components have had sufficient time to react and bond with the sub-micron particles and form the combined products.
- 14. A method of removing sub-micron particles from an oil based medium according to claim 13, wherein suitable mixing times are about 10 -60 minutes or preferably 30 minutes.
- 15. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein after the mixing process the combined mixture is allowed to settle over any suitable time range such as about 20 -120 minutes or preferably 60 minutes.
- 16. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein a decanting process occurs where decanted clarified solvent (i.e. the cleaned oil solvent medium with no or substantially no sub-micron particles) is separated from a sludge and/or sediment which contains a combined mixture of the chemical component and the sub-micron particles which is in the form of the combined product.
- 17. A method of removing sub-micron particles from an oil based medium according to any preceding claim, wherein a further chemical additive is added to a combined mixture of the chemical component and the sub-micron particles to form solid structures such as bricks.
- 18. A method of removing sub-micron particles from an oil based medium according to claim 17, wherein the further chemical is additive is selected from at least one or more of the following: soluble sodium silicates (e.g. Na20.XSiO2) and/or other metal oxides of silica having a negative charge.
- 19. Apparatus capable of removing sub-micron particles from an oil based medium, said apparatus comprising: a first tank capable of acting as a receptacle for the oil based medium containing sub-micron contaminating particles; a feed for inputting a chemical component into the first tank wherein the chemical component is capable of reacting and/or combining with sub-micron particles in the oil based medium to form a combined product; a mechanical separator capable of separating the combined product which forms as a sludge and/or sediment and cleaned oil based medium with sub-micron particles removed; a second tank capable of receiving the oil based medium with the sub-micron particles removed; and a storage device for storing the combined product which forms a sludge and/or sediment.
- 20. Apparatus capable of removing sub-micron particles from an oil based medium according to claim 15, wherein the apparatus is capable of being used to perform the method as defined in any of claims 1 to 18.
- 21. Apparatus capable of removing sub-micron particles from an oil based medium according to any of claims 19 or 20, wherein the first tank also comprises a mixing blade connected, for example, via a shaft to a motor.
- 22. Apparatus capable of removing sub-micron particles from an oil based medium according to any of claims 19 to 21, wherein the first tank further comprises a level sensor to prevent over-filling.
- 23. A method of removing sub-micron particles from an oil based medium as hereinbefore described and/or as shown in Figure 1.
- 24. Apparatus capable of removing sub-micron particles from an oil based medium as hereinbefore described and/or as shown in Figure 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1102441.1A GB2487967A (en) | 2011-02-11 | 2011-02-11 | Removing particles from oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1102441.1A GB2487967A (en) | 2011-02-11 | 2011-02-11 | Removing particles from oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201102441D0 GB201102441D0 (en) | 2011-03-30 |
| GB2487967A true GB2487967A (en) | 2012-08-15 |
Family
ID=43859294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1102441.1A Withdrawn GB2487967A (en) | 2011-02-11 | 2011-02-11 | Removing particles from oil |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2487967A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491515A (en) * | 1981-03-23 | 1985-01-01 | Monash University | Treating used automotive lubricating oil to reduce the content of suspended particulate matter, including lead |
| WO2002018523A1 (en) * | 2000-08-30 | 2002-03-07 | Haydock Frederick J | A method of reclaiming used motor oil for further use |
| WO2004053035A1 (en) * | 2002-12-12 | 2004-06-24 | Alfa Laval Corporate Ab | A method of purifying contaminated oil from particles suspended in the oil in a centnrifugal separator |
| WO2008140378A1 (en) * | 2007-05-10 | 2008-11-20 | Alfa Laval Corporate Ab | Method and device for cleaning of a fluid in a centrifugal separator |
| US20100104744A1 (en) * | 2008-10-29 | 2010-04-29 | E.I. Du Pont De Nemours And Company | Treatment of tailings streams |
-
2011
- 2011-02-11 GB GB1102441.1A patent/GB2487967A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491515A (en) * | 1981-03-23 | 1985-01-01 | Monash University | Treating used automotive lubricating oil to reduce the content of suspended particulate matter, including lead |
| WO2002018523A1 (en) * | 2000-08-30 | 2002-03-07 | Haydock Frederick J | A method of reclaiming used motor oil for further use |
| WO2004053035A1 (en) * | 2002-12-12 | 2004-06-24 | Alfa Laval Corporate Ab | A method of purifying contaminated oil from particles suspended in the oil in a centnrifugal separator |
| WO2008140378A1 (en) * | 2007-05-10 | 2008-11-20 | Alfa Laval Corporate Ab | Method and device for cleaning of a fluid in a centrifugal separator |
| US20100104744A1 (en) * | 2008-10-29 | 2010-04-29 | E.I. Du Pont De Nemours And Company | Treatment of tailings streams |
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| Publication number | Publication date |
|---|---|
| GB201102441D0 (en) | 2011-03-30 |
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