WO2019027313A1 - Agent désémulsionnant destiné à désémulsionner du bitume à partir d'asphalte naturel - Google Patents

Agent désémulsionnant destiné à désémulsionner du bitume à partir d'asphalte naturel Download PDF

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Publication number
WO2019027313A1
WO2019027313A1 PCT/MY2017/050079 MY2017050079W WO2019027313A1 WO 2019027313 A1 WO2019027313 A1 WO 2019027313A1 MY 2017050079 W MY2017050079 W MY 2017050079W WO 2019027313 A1 WO2019027313 A1 WO 2019027313A1
Authority
WO
WIPO (PCT)
Prior art keywords
demulsifying agent
silicate
demulsifying
bitumen
agent according
Prior art date
Application number
PCT/MY2017/050079
Other languages
English (en)
Inventor
Gee Pun TONG
Original Assignee
E Solvent Technologies (Hk) Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by E Solvent Technologies (Hk) Limited filed Critical E Solvent Technologies (Hk) Limited
Priority to CN201780094348.3A priority Critical patent/CN111051474A/zh
Publication of WO2019027313A1 publication Critical patent/WO2019027313A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/047—Breaking emulsions with separation aids

Definitions

  • This invention is related to the field of demulsification and more particularly a demulsifying agent and a method of using the same for demulsifying bitumen from natural asphalt.
  • Bitumen is an important substance within natural asphalt that is commonly used for road paving. It is an oil-based substance diffused within natural asphalt, which consists of a mixture of small stones, sand, filler and bitumen. However, the extraction of bitumen from natural asphalt has always been a difficult and challenging task.
  • bitumen is an oil-based substance
  • the process involves mixing the natural asphalt with either water and separating the stones, sand and fillers in the natural asphalt from the aqueous phase formed.
  • one of the disadvantages of using water for the extraction is the requirement of large amount of process water.
  • Another disadvantage is the issue of ensuring that bitumen is properly and effectively removed from the aqueous phase.
  • Another method of extracting bitumen from natural asphalt is the use of nonaqueous liquid such as solvent. Similar to the use of water, solvent is also mixed with natural asphalt that eventually separates the bitumen in an aqueous phase.
  • US 3914132 A describes the removal of organic deposits from surfaces, particularly those deposits containing asphaltenic compounds, by the dissolution of the deposits in a solvent comprised of an aromatic hydrocarbon and an amine.
  • US 4108681 A describes a method of dissolving asphaltic material using a liquid aromatic solvent and an additive material soluble in the liquid aromatic solvent. Therefore, the present invention aims to provide an alternative way to effectively demulsify bitumen from natural asphalt in a more cost efficient manner and environmental friendly conditions.
  • the demulsifying agent comprises at least an organic compound and at least a solvent.
  • the solvent comprises a silicate and the organic compound comprises naphtha. More particularly, the silicate comprises any or a combination of sodium silicate or sodium metasilicate, while naphtha is solvent naphtha and comprises any one or a combination of 1 ,2,3-trimethylbenzene, 1 ,2,4-trimethylbenze, or 1 ,3,5-trimethylbenzene.
  • an amount of demulsifying agent is provided and reacted with crushed natural asphalt, so that bitumen can be demulsified from the crushed natural asphalt.
  • the bitumen is then separated and extracted from the tailings of the reaction.
  • the present invention discloses a demulsifying agent for demulsifying bitumen from natural asphalt, where the demulsifying agent comprises at least an organic compound and at least a solvent.
  • the solvent is a silicate comprising any or a combination of sodium silicate or sodium metasilicate.
  • the sodium metasilicate can further comprise sodium metasilicate anhydrous or sodium metasilicate pentahydrate.
  • the density of the silicate is in the range of 1 .0195 to 1 .078 g/cm 3 , and has a concentration of 4 to 8% by weight in water. More specifically, the density of the silicate is 1 .02 to 1 .06 g/cm 3 and has a concentration of 4 to 8% by weight in water if the silicate comprises sodium silicate, a density of 1 .0332 to 1 .078 g/cm 3 and a concentration of 4 to 8% by weight in water if the silicate comprises sodium metasilicate anhydrous, and a density of 1 .0195 to 1 .0463 and a concentration of 4 to 8% by weight in water if the silicate comprises sodium metasilicate pentahydrate.
  • the density of the silicate can be adjusted accordingly if a combination of two or more types of silicates is used.
  • the silicate comprises silicon dioxide of equal or more than 27.3% by weight, sodium oxide of equal or more than 12.8% by weight, and a molar ratio of 0.94 to 2.5.
  • the solvent also preferably comprises ferum content of equal or less than 0.02% by weight.
  • the non-dissolvable material to be present within the solvent should be equal or less than 0.2% by weight.
  • the weight% of silicon dioxide and sodium oxide can be modified depending on any molar ratio changes made to the solvent in different embodiments.
  • the organic compound comprises solvent naphtha, a colourless, flammable liquid with a molar mass of 120.2 g/mol.
  • the solvent naphtha comprises a C9 aromatic hydrocarbon with 9 carbon aromatic monomers, such as any or a combination of 1 ,2,3-trimethylbenzene, 1 ,2,4-trimethylbenze, or 1 ,3,5- trimethylbenzene isomers. It further comprises of any one or a combination of 2-ethyitoluene, 3-ethy!toiuene, or 4-ethy!toiuene.
  • the solvent naphtha has a density of 0.86 - 0.89g/cm 3 . Further, it also has a boiling point of 152°C to 178°C, and a flash point of 42°C.
  • an amount of demulsifying agent is added at 60 ° C to 95 ° C to crushed natural asphalt and mixed thoroughly to form a homogenous mixture.
  • the homogenous mixture is then stirred in a thickening tank, where crude bitumen is separated from tailings of the homogenous mixture, and extracted.
  • the amount of demulsifying agent added to the crushed natural asphalt may vary, as it is dependent on the weight composition of bitumen, diesel oil, and sand present in the crushed natural asphalt.
  • a sample of natural asphalt is first measured to determine the weight composition of bitumen, diesel oil, and sand present in the sample.
  • bitumen and diesel oil are extracted from the sample.
  • the sample is weighed thereafter, with the difference in weight of the sample before and after bitumen and diesel oil is extracted accounting for the weight composition of bitumen and diesel oil of the sample.
  • the sample is dried to remove any water in the sample.
  • the dried sample is re-weighed, with the weight of the sample accounting for the weight composition of sand present in the sample.
  • natural asphalt ores having a typical diameter size of 50 cm are crushed in a crusher to have a diameter of 3 cm or less, so that the surface area for demulsifying agent to react with is increased.
  • the crushed natural asphalt is then weighed and compared to the weight of the sample, where the weight composition of bitumen, diesel oil, and sand present in the crushed natural asphalt is adjusted according to the weight composition of bitumen, diesel oil, and sand in the sample.
  • the crushed natural asphalt is transferred to pre-mixing means, and pre- mixed with an amount of the demulsifying agent, comprising solvent naphtha and silicate.
  • the amount of solvent naphtha added is dependent on the weight composition of bitumen and diesel oil present in the crushed natural asphalt, and added in a range of 0.5 to 1 .5 times the weight composition of bitumen and diesel oil of the crushed natural asphalt.
  • the amount of silicate added to the crushed natural asphalt is dependent on the weight composition of sand in the crushed natural asphalt, and added at a range of 1 to 3 times the weight composition of sand of the crushed natural asphalt.
  • the pre-mixture of crushed natural asphalt, solvent naphtha, and silicate is then thoroughly mixed in a mixer at 60°C to 95°C to produce a homogenous mixture.
  • the homogenous mixture is stirred in a thickener, where bitumen is separated from tailings of the homogenous mixture, and extracted.
  • the extracted crude bitumen can undergo a refinement process in a desalter to remove inorganic salts and impurities from the bitumen.
  • the refined bitumen is suitable as a blending material for road paving or sold to refineries for further refinement to produce light fractional products.
  • the refined bitumen can be distilled for further refinement.
  • the solvent naphtha and silicate can advantageously be extracted from tailings of the homogenous mixture and reused as the demulsifying agent, thus decreasing the costs involved and reducing waste.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Civil Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention vise à proposer une autre façon de désémulsionner efficacement du bitume à partir d'asphalte naturel d'une manière plus rentable et dans des conditions respectueuses de l'environnement. La présente invention concerne un agent désémulsionnant destiné à désémulsionner du bitume à partir d'asphalte naturel, l'agent désémulsionnant comprenant au moins un composé organique et au moins un solvant. Selon un mode de réalisation de la présente invention, le solvant est un silicate et le composé organique est un solvant naphta.
PCT/MY2017/050079 2017-07-31 2017-12-20 Agent désémulsionnant destiné à désémulsionner du bitume à partir d'asphalte naturel WO2019027313A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780094348.3A CN111051474A (zh) 2017-07-31 2017-12-20 一种用于使沥青从天然沥青中破乳的破乳剂

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2017702807 2017-07-31
MYPI2017702807 2017-07-31

Publications (1)

Publication Number Publication Date
WO2019027313A1 true WO2019027313A1 (fr) 2019-02-07

Family

ID=65233405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2017/050079 WO2019027313A1 (fr) 2017-07-31 2017-12-20 Agent désémulsionnant destiné à désémulsionner du bitume à partir d'asphalte naturel

Country Status (2)

Country Link
CN (1) CN111051474A (fr)
WO (1) WO2019027313A1 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453060A (en) * 1944-08-26 1948-11-02 Union Oil Co Process and apparatus for treating bituminous sands
US2793193A (en) * 1955-11-25 1957-05-21 Union Oil Co Sludge treatment
US2903407A (en) * 1956-04-16 1959-09-08 Union Oil Co Bituminous sand process
US3331765A (en) * 1965-03-19 1967-07-18 Exxon Research Engineering Co Treatment of athabasca tar sands froth
CA1238597A (fr) * 1984-10-25 1988-06-28 Suncor Energy Inc. / Suncor Energie Inc. Extraction du bitume des eaux-vannes venues du traitement des sables bitumineux
CN1775911A (zh) * 2005-12-14 2006-05-24 南京大学 一种从油砂中提取沥青的方法及其应用
US20100243534A1 (en) * 2009-03-25 2010-09-30 Yin Ming Samson Ng Silicates addition in bitumen froth treatment
CN104556297A (zh) * 2015-01-28 2015-04-29 桑达化工（南通）有限公司 一种高效破乳剂
CN104593120A (zh) * 2015-01-22 2015-05-06 南通恒隆化工有限公司 一种破乳剂
WO2015088311A1 (fr) * 2013-12-12 2015-06-18 E Solvent Technologies Sdn. Bhd. Agent désémulsifiant et procédé pour l'utiliser afin de désémulsifier du bitume à partir d'asphalte naturel
US20150299580A1 (en) * 2012-12-19 2015-10-22 E.I. Du Pont De Nemours And Company Improved bitumen extraction process
US20150315477A1 (en) * 2014-05-02 2015-11-05 SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project, as such owners exist now and Demulsifier injection system for froth treatment product quality enhancement
WO2016156584A1 (fr) * 2015-04-03 2016-10-06 Versalis S.P.A. Mélange de solvants pour l'élimination d'asphaltènes
CN106566579A (zh) * 2016-10-20 2017-04-19 八步区科学技术情报研究所 石油破乳剂

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7833338B2 (en) * 2004-02-18 2010-11-16 Meadwestvaco Packaging Systems, Llc Method for producing bitumen compositions
CN103980932A (zh) * 2014-05-06 2014-08-13 盘锦富隆化工有限公司 高凝油原油破乳剂
CN104194822B (zh) * 2014-09-04 2015-11-18 中国海洋石油总公司 一种交联型非离子聚醚原油破乳剂及其制备方法

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453060A (en) * 1944-08-26 1948-11-02 Union Oil Co Process and apparatus for treating bituminous sands
US2793193A (en) * 1955-11-25 1957-05-21 Union Oil Co Sludge treatment
US2903407A (en) * 1956-04-16 1959-09-08 Union Oil Co Bituminous sand process
US3331765A (en) * 1965-03-19 1967-07-18 Exxon Research Engineering Co Treatment of athabasca tar sands froth
CA1238597A (fr) * 1984-10-25 1988-06-28 Suncor Energy Inc. / Suncor Energie Inc. Extraction du bitume des eaux-vannes venues du traitement des sables bitumineux
CN1775911A (zh) * 2005-12-14 2006-05-24 南京大学 一种从油砂中提取沥青的方法及其应用
US20100243534A1 (en) * 2009-03-25 2010-09-30 Yin Ming Samson Ng Silicates addition in bitumen froth treatment
US20150299580A1 (en) * 2012-12-19 2015-10-22 E.I. Du Pont De Nemours And Company Improved bitumen extraction process
WO2015088311A1 (fr) * 2013-12-12 2015-06-18 E Solvent Technologies Sdn. Bhd. Agent désémulsifiant et procédé pour l'utiliser afin de désémulsifier du bitume à partir d'asphalte naturel
US20150315477A1 (en) * 2014-05-02 2015-11-05 SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project, as such owners exist now and Demulsifier injection system for froth treatment product quality enhancement
CN104593120A (zh) * 2015-01-22 2015-05-06 南通恒隆化工有限公司 一种破乳剂
CN104556297A (zh) * 2015-01-28 2015-04-29 桑达化工（南通）有限公司 一种高效破乳剂
WO2016156584A1 (fr) * 2015-04-03 2016-10-06 Versalis S.P.A. Mélange de solvants pour l'élimination d'asphaltènes
CN106566579A (zh) * 2016-10-20 2017-04-19 八步区科学技术情报研究所 石油破乳剂

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