AP2769A - Extraction of hydrocarborns from hydrocarbon-containing materials - Google Patents

Extraction of hydrocarborns from hydrocarbon-containing materials

Info

Publication number
AP2769A
AP2769A AP2010005221A AP2010005221A AP2769A AP 2769 A AP2769 A AP 2769A AP 2010005221 A AP2010005221 A AP 2010005221A AP 2010005221 A AP2010005221 A AP 2010005221A AP 2769 A AP2769 A AP 2769A
Authority
AP
ARIPO
Prior art keywords
hydrocarborns
hydrocarbon
extraction
containing materials
materials
Prior art date
Application number
AP2010005221A
Other languages
English (en)
Other versions
AP2010005221A0 (en
Inventor
Liang-Tseng Fan
Mohammad Reza Shafie
Julius Michael Tollas
Original Assignee
Green Source Energy Llc
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
Priority claimed from US12/053,126 external-priority patent/US8101812B2/en
Priority claimed from US12/174,139 external-priority patent/US8272442B2/en
Application filed by Green Source Energy Llc filed Critical Green Source Energy Llc
Publication of AP2010005221A0 publication Critical patent/AP2010005221A0/xx
Application granted granted Critical
Publication of AP2769A publication Critical patent/AP2769A/xx

Links

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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • 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
    • C10G1/06—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by destructive hydrogenation
    • C10G1/065—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by destructive hydrogenation in the presence of a solvent
    • 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
    • C10G21/06—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents characterised by the solvent used
    • C10G21/12—Organic compounds only
    • C10G21/14—Hydrocarbons
    • 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
    • C10G21/06—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents characterised by the solvent used
    • C10G21/12—Organic compounds only
    • C10G21/16—Oxygen-containing compounds
    • 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
    • C10G2300/1011—Biomass
    • C10G2300/1014—Biomass of vegetal origin
    • 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
    • C10G2300/1033—Oil well production fluids
    • 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
    • C10G2300/1096—Aromatics or polyaromatics
    • 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
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4081—Recycling aspects
    • 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
    • C10G2300/80—Additives
    • C10G2300/805—Water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P30/00—Technologies relating to oil refining and petrochemical industry
    • Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
AP2010005221A 2007-09-20 2008-09-17 Extraction of hydrocarborns from hydrocarbon-containing materials AP2769A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US97396407P 2007-09-20 2007-09-20
US12/053,126 US8101812B2 (en) 2007-09-20 2008-03-21 Extraction of hydrocarbons from hydrocarbon-containing materials
US12/174,139 US8272442B2 (en) 2007-09-20 2008-07-16 In situ extraction of hydrocarbons from hydrocarbon-containing materials
PCT/US2008/010831 WO2009038728A1 (en) 2007-09-20 2008-09-17 Extraction of hydrocarbons from hydrocarbon-containing materials

Publications (2)

Publication Number Publication Date
AP2010005221A0 AP2010005221A0 (en) 2010-04-30
AP2769A true AP2769A (en) 2013-09-30

Family

ID=56291090

Family Applications (1)

Application Number Title Priority Date Filing Date
AP2010005221A AP2769A (en) 2007-09-20 2008-09-17 Extraction of hydrocarborns from hydrocarbon-containing materials

Country Status (24)

Country Link
EP (1) EP2205696A1 (zh)
JP (2) JP2010540694A (zh)
KR (1) KR101458881B1 (zh)
CN (1) CN101868517B (zh)
AP (1) AP2769A (zh)
AR (1) AR068497A1 (zh)
AU (1) AU2008301860B2 (zh)
BR (1) BRPI0817129B1 (zh)
CA (1) CA2699764C (zh)
CL (1) CL2008002819A1 (zh)
CO (1) CO6321173A2 (zh)
EA (1) EA023805B1 (zh)
EC (1) ECSP10010124A (zh)
HK (1) HK1146732A1 (zh)
IL (1) IL204606A (zh)
MA (1) MA32182B1 (zh)
MX (2) MX2010002915A (zh)
MY (1) MY149974A (zh)
NZ (1) NZ584661A (zh)
PE (1) PE20090918A1 (zh)
TN (1) TN2010000127A1 (zh)
TW (1) TWI441909B (zh)
UY (1) UY31345A1 (zh)
WO (1) WO2009038728A1 (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8404108B2 (en) 2007-09-20 2013-03-26 Green Source Energy Llc Extraction of hydrocarbons from hydrocarbon-containing materials and/or processing of hydrocarbon-containing materials
WO2009114145A2 (en) * 2008-03-11 2009-09-17 Verutek Technologies, Inc. Ex-situ low-temperature hydrocarbon separation from tar sands
NZ619989A (en) * 2009-03-13 2014-11-28 Green Source Energy Llc Extraction of hydrocarbons from hydrocarbon-containing materials and/or processing of hydrocarbon-containing materials
EP2366759A1 (de) * 2010-03-17 2011-09-21 Siemens Aktiengesellschaft Verfahren und Vorrichtungen zur Extraktion von Kohlenwasserstoffen aus Ölsand
JP5504536B2 (ja) * 2010-06-04 2014-05-28 国立大学法人秋田大学 高周波の超音波を使用したオイルサンド由来のビチューメンの抽出方法
US9150776B2 (en) * 2011-06-13 2015-10-06 Nalco Company Additives for improving hydrocarbon recovery
US9884997B2 (en) * 2011-09-30 2018-02-06 Mcw Energy Group Limited Oil from oil sands extraction process
MY172965A (en) * 2012-02-02 2019-12-16 Green Source Energy Llc Compositions and methods for recovering and/or removing reagents from porous media
AR092845A1 (es) * 2012-06-13 2015-05-06 Red Leaf Resources Inc Metodos de operacion para reducir la acumulacion de hidrocarburos residuales en el procesamiento de esquistos bituminosos
CN102784493B (zh) * 2012-08-21 2014-03-26 无锡市华立石化工程有限公司 一种自动连续提取松脂液的浸提器
AU2014236331B2 (en) * 2013-03-14 2017-08-31 Flotek Chemistry, Llc Methods and compositions for stimulating the production of hydrocarbons from subterranean formations
CN104420860A (zh) * 2013-08-19 2015-03-18 国润金华（北京）国际能源投资有限公司 一种油砂分离器
CN106977064B (zh) * 2017-03-30 2019-05-24 柴海林 一种生物萃取剂处理含油污泥的方法及其应用
CN109621475B (zh) * 2018-12-18 2021-01-08 江西开源香料有限公司 一种α-蒎烯制备别罗勒烯的方法及应用设备
CN115260002B (zh) * 2022-05-26 2023-10-20 北京工业大学 金属有机框架材料在龙脑/异龙脑混合物中的吸附分离应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB322749A (en) * 1928-09-06 1929-12-06 Ig Farbenindustrie Ag Improvements in the extraction of bituminous materials by means of solvents
US20050161372A1 (en) * 2004-01-23 2005-07-28 Aquatech, Llc Petroleum recovery and cleaning system and process
WO2006030772A1 (ja) * 2004-09-13 2006-03-23 Olympus Corporation 被検体内導入システム、受信装置および被検体内導入装置

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2191767A (en) 1934-12-15 1940-02-27 Pennsylvania Petroleum Res Cor Process for treating mineral oils
US2324980A (en) 1940-04-30 1943-07-20 Firestone Tire & Rubber Co Method of reclaiming synthetic rubber
US2356254A (en) 1942-10-21 1944-08-22 Petrolite Corp Process for preventing and/or removing accumulation of solid matter in oil wells, pipelines, and flow lines
US2549438A (en) * 1949-09-28 1951-04-17 Petrolite Corp Process for breaking petroleum emulsions
US3061097A (en) * 1958-12-24 1962-10-30 Philip A Mallinckrodt Flotation process for separating bituminous matter from associated gangue minerals
NL169490C (nl) * 1969-03-11 1982-07-16 Owens Illinois Inc Werkwijze voor het bereiden van een bekledingsmateriaal en voortbrengselen, vervaardigd onder toepassing van dit materiaal.
US4029567A (en) * 1976-04-20 1977-06-14 Canadian Patents And Development Limited Solids recovery from coal liquefaction slurry
US4272356A (en) * 1980-04-07 1981-06-09 Stiller Alfred H Coal extraction process
US4576708A (en) * 1984-08-06 1986-03-18 Cities Service Oil & Gas Corp. Beneficiation of shale kerogen and its conversion into shale oil
US4968413A (en) * 1985-08-22 1990-11-06 Chevron Research Company Process for beneficiating oil shale using froth flotation
US5102566A (en) * 1987-10-02 1992-04-07 Exxon Chemical Patents Inc. Low ash lubricant compositions for internal combustion engines (pt-727)
US5328518A (en) * 1991-12-06 1994-07-12 Golden Technologies Company, Inc. Method for separating components of liquids in industrial process
US5634984A (en) * 1993-12-22 1997-06-03 Union Oil Company Of California Method for cleaning an oil-coated substrate
US5454878A (en) * 1994-02-17 1995-10-03 Lockheed Idaho Technologies Company Method for removing hydrocarbon contaminants from solid materials
DE69530020T2 (de) * 1994-02-24 2004-02-05 Matsushita Electric Industrial Co., Ltd., Kadoma Verfahren zur Extraktion organischer Substanz, in diesem Verfahren zu verwendendes Lösungsmittel und Verfahren zur Messung des Gehaltes an organischer Substanz
US5868202A (en) * 1997-09-22 1999-02-09 Tarim Associates For Scientific Mineral And Oil Exploration Ag Hydrologic cells for recovery of hydrocarbons or thermal energy from coal, oil-shale, tar-sands and oil-bearing formations
NZ330283A (en) * 1998-04-21 2001-01-26 Organic Interceptor Products L herbicide containing monoterpene derivatives and fatty acid soaps
CA2276944A1 (en) * 1998-10-13 2000-04-13 Venanzio Di Tullio A process for the separation and isolation of tars, oils, and inorganic constituents from mined oil bearing sands and a further process for the extraction of natural resins from plant matter and kerogens from oil shale
FR2828064B1 (fr) * 2001-08-01 2004-05-21 Action Pin Utilisation de derives terpeniques comme agent anti-rebond augmentant la retention
CA2578873C (en) * 2004-10-15 2012-12-11 Earth Energy Resources Inc. Removal of hydrocarbons from particulate solids
WO2007005944A2 (en) * 2005-07-05 2007-01-11 Microbial Enhanced Oil Recovery, L.L.C. Composition and method to enhance recovery from oil wells

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB322749A (en) * 1928-09-06 1929-12-06 Ig Farbenindustrie Ag Improvements in the extraction of bituminous materials by means of solvents
US20050161372A1 (en) * 2004-01-23 2005-07-28 Aquatech, Llc Petroleum recovery and cleaning system and process
WO2006030772A1 (ja) * 2004-09-13 2006-03-23 Olympus Corporation 被検体内導入システム、受信装置および被検体内導入装置

Also Published As

Publication number Publication date
JP2010540694A (ja) 2010-12-24
KR101458881B1 (ko) 2014-11-07
WO2009038728A1 (en) 2009-03-26
MY149974A (en) 2013-11-15
CA2699764A1 (en) 2009-03-26
CL2008002819A1 (es) 2008-10-24
CN101868517B (zh) 2014-09-17
TWI441909B (zh) 2014-06-21
BRPI0817129B1 (pt) 2017-05-23
UY31345A1 (es) 2009-04-30
IL204606A0 (en) 2010-11-30
JP5858449B2 (ja) 2016-02-10
TN2010000127A1 (en) 2011-09-26
AU2008301860A1 (en) 2009-03-26
KR20100100761A (ko) 2010-09-15
EA023805B1 (ru) 2016-07-29
PE20090918A1 (es) 2009-07-04
ECSP10010124A (es) 2010-09-30
NZ584661A (en) 2012-09-28
EA201000512A1 (ru) 2010-10-29
AR068497A1 (es) 2009-11-18
CO6321173A2 (es) 2011-09-20
HK1146732A1 (zh) 2011-07-08
MX2010002915A (es) 2010-06-02
CA2699764C (en) 2015-02-17
AP2010005221A0 (en) 2010-04-30
MA32182B1 (fr) 2011-04-01
BRPI0817129A2 (pt) 2015-03-31
CN101868517A (zh) 2010-10-20
JP2015004077A (ja) 2015-01-08
EP2205696A1 (en) 2010-07-14
AU2008301860B2 (en) 2012-07-26
TW200914599A (en) 2009-04-01
MX2012013862A (es) 2013-06-25
IL204606A (en) 2013-07-31

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