EP3596187A1 - Endogenous asphaltenic encapsulation of bituminous materials with recovery of light ends - Google Patents
Endogenous asphaltenic encapsulation of bituminous materials with recovery of light endsInfo
- Publication number
- EP3596187A1 EP3596187A1 EP18767379.3A EP18767379A EP3596187A1 EP 3596187 A1 EP3596187 A1 EP 3596187A1 EP 18767379 A EP18767379 A EP 18767379A EP 3596187 A1 EP3596187 A1 EP 3596187A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aliquot
- asphaltenic
- shaped
- bituminous liquid
- bitumen
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/14—Solidifying, Disintegrating, e.g. granulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/14—Solidifying, Disintegrating, e.g. granulating
- C10C3/16—Solidifying, Disintegrating, e.g. granulating by direct contact with liquids
-
- 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
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
- C10G1/045—Separation of insoluble materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- 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
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/205—Metal content
- C10G2300/206—Asphaltenes
Definitions
- the invention is in the field of methods for shaping materials, in particular by physically and chemically treating viscous bituminous liquids to form discrete solid-encapsulated shapes, optionally with associated recovery of light ends as a separate product stream.
- bitumen It is common practice to segregate petroleum substances of high viscosity and density into two categories, “heavy oil” and “bitumen”.
- “heavy oil” as a petroleum that has a mass density of between about 920 kg/m 3 (or an API gravity of about 26°) and 1 ,000 kg/m 3 (or an API gravity of about 10°).
- Bitumen is sometimes described as that portion of petroleum that exists in the semi-solid or solid phase in natural deposits, with a mass density greater than about 1 ,000 kg/m 3 (or an API gravity of about 10°) and a viscosity greater than 10,000 centipoise (cP or 10 Pa.s) measured at original temperature in the deposit and atmospheric pressure, on a gas-free basis.
- references to heavy oil and bitumen represent categories of convenience, and there is a continuum of properties between heavy oil and bitumen. Accordingly, references to heavy oil and/or bitumen herein include the continuum of such substances, and do not imply the existence of some fixed and universally recognized boundary between the two substances.
- the term “heavy oil” includes within its scope all “bitumen” including hydrocarbons that are present in semi-solid or solid form.
- a “bituminous" material is one that includes a bitumen component, as that component is broadly defined.
- Bituminous liquids generally include an asphaltene component.
- Asphaltenes may for example be suspended as a nanocolloid or otherwise dispersed within a bituminous liquid.
- Asphaltenes may be defined practically by differential solubility, for example as the component of a bituminous material that is insoluble in n-alkanes, such as n-pentane or n-heptane, and soluble in toluene or benzene.
- asphaltenes are generally present as a complex mixture that includes high molecular weight polyaromatic carbon ring units, with oxygen, nitrogen, and sulfur heteroatoms, as well as alkane chains and cyclic alkanes.
- the term “asphaltenes” encompasses this wide range of variously defined materials, and an "asphaltenic" material is one that includes an asphaltene component, as that component is broadly defined.
- asphaltenes in bitumen has in some circumstances been suggested to represent a potential production or transportation problem.
- asphaltene precipitation and deposition are recognized risks that may result from changes in pressure, temperature, chemical composition and shear rate.
- components such as asphaltenes but also lighter materials. These light ends are composed of saturate (alkane) and aromatic components and typically have viscosities lower than that of the asphaltenic component.
- saturate alkane
- aromatic components typically have viscosities lower than that of the asphaltenic component.
- reactions occur that can break bonds in the heavy components of the heavy oil and bitumen leading to the generation of lighter materials such as saturate and aromatic components.
- lighter materials such as saturate and aromatic components.
- endogenous asphaltenes in a bituminous liquid may be induced to coalesce on the surface of an aliquot of the bituminous liquid, so as to form a resilient membrane that has sufficient structural integrity to retain the remaining bituminous liquid in the form of a discrete shape.
- endogenous asphaltenes in the bituminous liquid are converted into a resilient solidified surface layer on shaped units of the bituminous liquid.
- pellets or capsules of bitumen are then amenable to material handling techniques adapted for particulate solids.
- light components may be generated from reactions that occur at the surface of the bituminous liquid.
- These light components are generally composed of relatively low molecular weight alkanes (linear hydrocarbons up to C20 alkanes and potentially above) and aromatics (cyclic hydrocarbons up to C20 aromatics and potentially above). These light components can be collected as a separate liquid product stream.
- bituminous liquid may be divided into shaped liquid aliquots, each aliquot having a discrete shape defined by a material handing mechanism that contains the aliquot.
- a rotating cylinder may be shaped with indentations, and the surface of the cylinder flooded with bituminous liquid. The cylinder may then be wiped with a doctor blade, so that separate aliquots of the bituminous liquid remain within each of the recessed indentations.
- each shaped aliquot may then be treated, for example by heating of the rotating cylinder, so that the indented gravure cylinder acts as a heated coating roll, with the heat forming an outer membrane of asphaltenic material from the shaped bituminous liquid.
- each shaped aliquot is encapsulated within a resilient asphaltenic coating.
- the outer asphaltenic layer is sufficiently resilient to retain the discrete shape of the shaped aliquot when the aliquot is released from the material handling mechanism.
- the shaped aliquots may for example be released from the patterned rotating cylinder onto a substrate, for example after being nipped between a second heated backing roll and the heated patterned gravure roll.
- the shaped aliquots released onto the substrate form resiliently shaped units of bituminous liquid encapsulated in the asphaltenic outer membrane, which may for example be cooled on the substrate, and then released from the substrate, for example with a scraper, producing pellets of bituminous liquid.
- the light components generated during the step of forming the shaped bituminous liquid can be collected into a separate liquid product stream.
- the density of the units of bituminous liquid produced by processes of the invention may be adjusted, for example by
- pellets can accordingly be designed to be buoyant in water, which may for example facilitate recovery of the pelleted material in the event of an environmental release or spill.
- the light component stream may be collected and sold as an individual product or can be mixed at a later time with the units of bituminous liquid to form a mixture similar to the original heavy oil or bitumen or a partially upgraded oil.
- FIG. 1 is a diagram exemplifying one implementation of the methods described herein for treating a heavy oil or bitumen to a pelletized form and recover the light components formed during the process.
- FIG. 2 is a diagram exemplifying another implementation of the methods described herein for treating a heavy oil or bitumen to a pelletized form and recover the light components formed during the process.
- FIG. 3 is a diagram exemplifying another implementation of the methods described herein for treating a heavy oil or bitumen to a pelletized form and recover the light components formed during the process.
- FIG. 4 is a diagram exemplifying another implementation of the methods described herein for treating a heavy oil or bitumen to a pelletized form and recover the light components formed during the process.
- FIG. 5 is a diagram illustrating different pellet shapes obtained from a patterned roll to convert heavy oil or bitumen to a pelletized form.
- FIG. 6 includes three photographic images, illustrating characteristics of raw bitumen, spherical pellets and a vapor condensate.
- FIG. 7 is a table listing properties of original bitumen, the skin
- FIG. 8 is a diagram illustrating an alternative embodiment of the invention.
- FIG. 9 includes two images illustrating a cylindrical bitumen pellet and draining of the encapsulated bitumen within the pellet.
- Methods are provided to pelletize a wide variety of heavy oils and bitumen, including for example residual oil fractions from upgrading and refining plants with simultaneous collection of lighter components into a separate product stream.
- continuous high speed methods are provided, as illustrated in Figures 1 -6.
- Units or pellets of bituminous material may be produced of widely variable size and density.
- a heated gravure patterned roll apparatus is employed within a controlled material handling environment, to convert a heavy oil or bitumen stream into separate small units of specific shape. The patterned roll may be used to apply heat to the exterior of the pellets.
- the output from the gravure roll apparatus may be a pelletized form of heavy oil or bitumen that has a relatively thin semi-solid or solid coating on the surface that is sufficiently resilient to contain a liquid heavy oil or bitumen within the pellet and lighter components into a separate product stream.
- the patterned roll may be shaped so as to provide pellets of widely variable shape, such as spheres, ellipsoids, cubes, pyramids, double pyramids, or other shapes.
- FIG. 5 displays example patterns that can be used to form the bitumen pellets.
- the dimensions of the pellets can for example range from millimeters to tens of centimeters, with some preferred size embodiments being on the order of a few centimeters.
- FIG. 1 illustrates an implementation of the present methods for treating a heavy oil or bitumen with simultaneous collection of lighter components into a separate product stream.
- the bitumen is heated and flows into a tank. The heating is carried out so that the viscosity of the heavy oil or bitumen drops to facilitate processing with the patterned roll apparatus.
- the temperature range for this heating may for example be between about 150°C and 250°C. In select embodiments, at this stage, the temperature may be constrained to under about 250°C, to minimize reactions from occurring in the heavy oil or bitumen.
- the heat can for example be delivered through a variety of methods, including heat tracing tape, steam heating, and electrical heating.
- the light components can be collected by using a cool surface or a standard
- a patterned roll dips into the tank and the patterns in the roll are filled with hot bitumen.
- the heated patterned roll may for example be maintained at between about 300°C and 500°C, most preferably between 350°C and 450°C.
- the surface of the patterned roll may for example be constructed of a oleicophobic material.
- the bitumen in the recessed patterns on the roll may then be deposited on a oleicophobic substrate, which as illustrated is heated by a backing roll.
- the bitumen patterns on the substrate are then cooled and scraped off the substrate for subsequent transport or processing.
- the mechanism may be adapted so that reactions on the outer surface of the bitumen pellet occur in the nib, the contact region between the rolls, to form the exterior coating on the pellet.
- the rolls can for example be loaded, so that there exists a positive pressure in the nib. In this way, the heat and pressure of patterned roll and nib cause reactions that lead to the formation of a thin solid layer on the surface of the bitumen pellet. For example, thermal cracking (pyrolysis) reactions may occur which produce a viscous coating on the surface of the pellets, and asphaltene precipitation may also occur in a way which helps to strengthen the coating on the surface of the pellet.
- the controlled material handling environment may for example include mechanisms for applying additional surface treatments to the pellets, for example by treating the exterior of the pellets with chemical agents and/or ultrasonic stimulation. These additional surface treatments may for example be applied so as to improve a desired quality of the outer coating. For example, aliquots of bituminous liquid may be exposed to chemical agents such as CO2, propane, pentane or heptane. In addition, physical treatments in addition to heating may be applied, such as ultrasound. To form the coating on the outside of the heavy oil or bitumen pellets, the chemical changes that occur on the outside of the heavy oil or bitumen pellet may for example include asphaltene precipitation and thermal cracking (pyrolysis - splitting larger hydrocarbon chains into smaller-chained compounds). In particular, in the nib of the patterned roll system, a solvent may be introduced to increase the formation of asphaltene on the surface of the pellets.
- the light components are collected by using a condenser.
- the liquid condensate is collected and removed as a product stream.
- the condenser can take any form including a chilled plate or a standard condenser coil.
- FIG. 2 illustrates an exemplary embodiment in which a solvent zone is placed just up-stream of the nib with simultaneous collection of lighter components into a separate product stream.
- Process conditions may be selected in such an embodiment so as to cause further asphaltene precipitation from the bitumen at the surfaces of the bitumen pellets.
- Alternative solvents include propane, pentane, and heptane.
- FIG. 3 shows another exemplary embodiment, in which ultrasonic stimulation is used in the nib with simultaneous collection of lighter components into a separate product stream.
- Process conditions may be selected in such an embodiment so as to further cause the precipitation of asphaltenes on the outer surface of the bitumen pellet, as the aliquot of bituminous liquid is retained in the pattern.
- Ultrasonic stimulation may for example be carried out so as to cause sonochemical reactions to occur, for example reactions that lead to viscosification of the bitumen.
- the frequency of operation of the ultrasonic stimulation may for example be between about 20 and 40 kHz.
- FIG. 4 illustrates an embodiment in which heat, solvent, and ultrasonic stimulation are all used to form the skin on the surface of the bitumen pellet with simultaneous collection of lighter components into a separate product stream.
- other fluid distribution systems can be used, such as a slot coater, to place the bitumen on the patterned roll.
- the pellets may be cooled, for example to ambient or chilled conditions. In this way, after the pellets emerge from the nib, the pellets are cooled so as to facilitate separation of the pellets from the backing web (substrate). Chilling is also contemplated, to collect lighter components into a separate product stream.
- the heavy oil or bitumen may be mixed with other materials to yield a pellet with other functional capabilities.
- the oil can be partially foamed so that it has a gas within the liquid which alters the overall density of the oil yielding pellets that float on water.
- the bitumen can be foamed before it enters the tank so that it forms a foamed bitumen pellet.
- the gas used to create the foam can for example be nitrogen or carbon dioxide.
- the amount of gas in the pellets can be controlled to control the overall density of the bitumen pellets.
- encapsulated solvent can be added to the heavy oil or bitumen yielding a pellet that contains solvent which when the pellet is processed can be used as part of the product.
- one or more catalysts can be distributed within the heavy oil or bitumen pellets, for example to facilitate future processing of the bituminous liquid.
- the processing time and conditions in the patterned roll apparatus can be altered to provide a thicker coating on the pellets.
- the overall chemical composition of the pellet can be tuned to a specific need.
- the asphaltene content can be raised so that the pellets are more amenable for asphalt processing for road construction.
- FIG. 6 shows an example of bitumen pellets created by using one of the methods described herein.
- the first image of FIG. 6 displays the raw bitumen.
- the second image of FIG. 6 displays the bitumen pellets.
- the thickness of the skin is less than 1 mm.
- the third image of FIG. 6 shows the liquid condensate formed from the process.
- the density of the liquid condensate is equal to 0.875 g/cm3.
- FIG. 7 sets out data from analysis of the interior bitumen and external skin of an exemplary bitumen pellet.
- the original bitumen is a liquid with viscosity of about 1 million cP.
- the outer skin is a solid and has a Young's modulus equal to 0.1 GPa.
- the asphaltene content of the original bitumen and skin are 18 and 35 weight percent, respectively.
- the encapsulated bitumen within the pellet has essentially the same properties as that of the original bitumen.
- the data shows that the skin is relatively thin and rigid.
- FIG. 8 illustrates a further alternative implementation of the methods of the invention, in which droplets of bitumen are formed in a solvent bath to form a asphaltenic skin on the outer surface. These methods may for example produce spherical or nearly spherical bitumen pellets.
- FIG. 9 shows an example of a bitumen pellet created by using one of the methods described herein.
- the first image of FIG. 9 displays a cylindrical bitumen pellet.
- the second image of FIG. 9 displays the bitumen draining from the pellet after it was opened and heated.
- the viscous bitumen drains from the pellet.
- the thickness of the skin is less than 1 mm.
- the bitumen pellets can be coated, for example with solid asphaltene or coke or polymers. This coating may for example be applied so as to reinforce the
- light ends from the heavy oil or bitumen may be released and subsequently captured as a separate product stream.
- the methods of capture may for example involve containing the downstream side of the peptization unit within an enclosure where the released vapour light ends are collected in a condenser or chilled condenser or collected on a cool surface and then directed into a collection system for further processing.
- the light ends may be recombined with the bitumen pellets to form a new heavy oil or bitumen mixture. This may for example be done by using methods to crush and mix liquids and solids such as a crusher or screw extruder or similar device.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Civil Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Working-Up Tar And Pitch (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201762471218P | 2017-03-14 | 2017-03-14 | |
US201762525669P | 2017-06-27 | 2017-06-27 | |
PCT/CA2018/050287 WO2018165745A1 (en) | 2017-03-14 | 2018-03-09 | Endogenous asphaltenic encapsulation of bituminous materials with recovery of light ends |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3596187A1 true EP3596187A1 (en) | 2020-01-22 |
EP3596187A4 EP3596187A4 (en) | 2021-01-20 |
Family
ID=63521965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18767379.3A Pending EP3596187A4 (en) | 2017-03-14 | 2018-03-09 | Endogenous asphaltenic encapsulation of bituminous materials with recovery of light ends |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3596187A4 (en) |
CN (1) | CN110461995B (en) |
CA (1) | CA3051612A1 (en) |
MX (1) | MX2019010894A (en) |
SA (1) | SA519402501B1 (en) |
WO (1) | WO2018165745A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2714409C2 (en) * | 2019-02-14 | 2020-02-14 | Сергей Игоревич Титов | Asphalt-concrete mixture production method |
RU2724653C1 (en) * | 2019-06-20 | 2020-06-25 | Валерий Васильевич Харин | Hydraulic beam |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2656033A1 (en) * | 1976-12-10 | 1978-06-15 | Ruemmer Maschf Ludwig | Bitumen processing vat - with film plasticised on periphery of drum revolving in coolant-filled vat, pref. having silicone lining |
US6357526B1 (en) * | 2000-03-16 | 2002-03-19 | Kellogg Brown & Root, Inc. | Field upgrading of heavy oil and bitumen |
NO337632B1 (en) * | 2009-12-18 | 2016-05-18 | Sopekosten As | Bitumen Bullets |
US20110185631A1 (en) * | 2010-02-03 | 2011-08-04 | Kellogg Brown & Root Llc | Systems and Methods of Pelletizing Heavy Hydrocarbons |
CA2790766C (en) * | 2011-09-22 | 2019-05-28 | Total E&P Canada Ltd. | Multi-stage counter-current froth settler and method of use |
CN102876345A (en) * | 2012-10-30 | 2013-01-16 | 中国石油化工股份有限公司 | Hard asphalt granulation method and device thereof |
US10190062B2 (en) * | 2015-07-02 | 2019-01-29 | Cenovus Energy Inc. | Bitumen processing and transport |
US10106745B2 (en) * | 2015-10-26 | 2018-10-23 | Cenovus Energy Inc. | Bitumen solidification and prilling |
US10093861B2 (en) * | 2016-03-07 | 2018-10-09 | Canadian National Railway Company | Method and systems for transporting bitumen in solidified form |
FR3055568B1 (en) * | 2016-09-08 | 2020-01-31 | Total Marketing Services | PROCESS FOR MANUFACTURING MATERIAL IN THE FORM OF GRANULES FOR USE AS A ROAD BINDER OR SEALING BINDER AND DEVICE FOR MANUFACTURING THE SAME |
-
2018
- 2018-03-09 CA CA3051612A patent/CA3051612A1/en active Pending
- 2018-03-09 EP EP18767379.3A patent/EP3596187A4/en active Pending
- 2018-03-09 WO PCT/CA2018/050287 patent/WO2018165745A1/en unknown
- 2018-03-09 MX MX2019010894A patent/MX2019010894A/en unknown
- 2018-03-09 CN CN201880017481.3A patent/CN110461995B/en active Active
-
2019
- 2019-08-22 SA SA519402501A patent/SA519402501B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN110461995A (en) | 2019-11-15 |
CA3051612A1 (en) | 2018-09-20 |
MX2019010894A (en) | 2019-10-30 |
WO2018165745A1 (en) | 2018-09-20 |
SA519402501B1 (en) | 2023-01-10 |
CN110461995B (en) | 2022-03-25 |
EP3596187A4 (en) | 2021-01-20 |
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Inventor name: GATES, IAN DONALD Inventor name: WANG, JINGYI |
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A4 | Supplementary search report drawn up and despatched |
Effective date: 20201223 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: B03B 9/02 20060101ALI20201217BHEP Ipc: B01J 2/22 20060101ALI20201217BHEP Ipc: C10C 3/14 20060101AFI20201217BHEP Ipc: C10C 3/16 20060101ALI20201217BHEP Ipc: C08J 3/12 20060101ALI20201217BHEP Ipc: C08L 95/00 20060101ALI20201217BHEP |