GB714327A - Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form - Google Patents

Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form

Info

Publication number
GB714327A
GB714327A GB12287/50A GB1228750A GB714327A GB 714327 A GB714327 A GB 714327A GB 12287/50 A GB12287/50 A GB 12287/50A GB 1228750 A GB1228750 A GB 1228750A GB 714327 A GB714327 A GB 714327A
Authority
GB
United Kingdom
Prior art keywords
urea
oil
hydrocarbon
suspension
emulsion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB12287/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LESLIE SENIOR THORNES
Anglo Iranian Oil Co Ltd
Original Assignee
LESLIE SENIOR THORNES
Anglo Iranian Oil Co Ltd
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 LESLIE SENIOR THORNES, Anglo Iranian Oil Co Ltd filed Critical LESLIE SENIOR THORNES
Priority to GB12287/50A priority Critical patent/GB714327A/en
Priority to NL161132A priority patent/NL75904C/xx
Priority to US22655751 priority patent/US2731457A/en
Priority to BE503277D priority patent/BE503277A/xx
Publication of GB714327A publication Critical patent/GB714327A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition 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
    • C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
    • C10G31/06—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by heating, cooling, or pressure treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

Urea is produced in finely-divided form by contacting with a hydrocarbon oil, forming an emulsion of liquid urea in the oil, and shockcooling the emulsion by rapid mixing with hydrocarbon oil at a temperature below that of the emulsion. A suspension of urea in oil is thus formed. The hydrocarbon oil may be a petroleum fraction, for example, a straight run gas oil of boiling range 200-350 DEG C. The urea-in-oil suspension may be used for treating petroleum fractions (see Group III). Specification 728,581, [Group III], is referred to. The Provisional Specification refers also to substituted urea, for example, alkyl substituted ureas.ALSO:A process for the production of hydrocarbon oils comprises treating a liquid petroleum fraction in a urea adduction zone with a urea-in-oil suspension to form a solid urea adduct, separating a hydrocarbon oil from the adduct, decomposing the adduct by heat in the absence of water, separating urea, converting it to a urea-in-oil suspension and returning this suspension to the urea adduction zone. The hydrocarbon oils may be petroleum fractions, for example, a straight run gas oil of boiling range 200-350 DEG C. The adduct formation may be carried out in the presence of an alkanol such as methanol, ethanol or propanol; a hydrocarbon diluent such as a kerosine fraction of boiling range 100-200 DEG C., may also be added. The urea-in-oil suspension is prepared by forming an emulsion of liquid urea in hydrocarbon oil and shock-cooling the emulsion by mixing with cooler hydrocarbon oil. Specification 728,581 is referred to. The Provisional Specification refers also to substituted urea, for example alkyl substituted ureas.
GB12287/50A 1950-05-17 1950-05-17 Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form Expired GB714327A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB12287/50A GB714327A (en) 1950-05-17 1950-05-17 Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form
NL161132A NL75904C (en) 1950-05-17 1951-05-10
US22655751 US2731457A (en) 1950-05-17 1951-05-16 Production and use of a urea suspension
BE503277D BE503277A (en) 1950-05-17 1951-05-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12287/50A GB714327A (en) 1950-05-17 1950-05-17 Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form

Publications (1)

Publication Number Publication Date
GB714327A true GB714327A (en) 1954-08-25

Family

ID=10001784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12287/50A Expired GB714327A (en) 1950-05-17 1950-05-17 Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form

Country Status (4)

Country Link
US (1) US2731457A (en)
BE (1) BE503277A (en)
GB (1) GB714327A (en)
NL (1) NL75904C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049032B (en) * 1955-04-29 1959-01-22 Oelwerke Julius Schindler G M Process for the continuous dewaxing of hydrocarbon oils using urea adducts
DE2924029A1 (en) * 1978-06-13 1979-12-20 Montedison Spa METHOD FOR PRODUCING SPHAEROIDICALLY SHAPED PRODUCTS SOLID AT ROOM TEMPERATURE
EP1210968A1 (en) * 2000-11-16 2002-06-05 Toyota Jidosha Kabushiki Kaisha Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911350A (en) * 1959-11-03 Production of low cold-test oils by

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1558619A (en) * 1921-02-05 1925-10-27 Sharples Specialty Co Method and apparatus for avoiding shock chill in precipitating substances from liquids
US2031117A (en) * 1932-10-24 1936-02-18 Union Oil Co Process for dewaxing oil
FR959374A (en) * 1947-01-07 1950-03-28
FR961883A (en) * 1947-02-21 1950-05-24
US2606140A (en) * 1948-12-30 1952-08-05 Texas Co Separation of wax constituents and the like from oil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049032B (en) * 1955-04-29 1959-01-22 Oelwerke Julius Schindler G M Process for the continuous dewaxing of hydrocarbon oils using urea adducts
DE2924029A1 (en) * 1978-06-13 1979-12-20 Montedison Spa METHOD FOR PRODUCING SPHAEROIDICALLY SHAPED PRODUCTS SOLID AT ROOM TEMPERATURE
EP1210968A1 (en) * 2000-11-16 2002-06-05 Toyota Jidosha Kabushiki Kaisha Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent
US6725651B2 (en) 2000-11-16 2004-04-27 Toyota Jidosha Kabushiki Kaisha Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent

Also Published As

Publication number Publication date
NL75904C (en) 1954-09-15
BE503277A (en) 1951-06-15
US2731457A (en) 1956-01-17

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