US2731457A - Production and use of a urea suspension - Google Patents

Production and use of a urea suspension Download PDF

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Publication number
US2731457A
US2731457A US22655751A US2731457A US 2731457 A US2731457 A US 2731457A US 22655751 A US22655751 A US 22655751A US 2731457 A US2731457 A US 2731457A
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United States
Prior art keywords
urea
oil
hydrocarbon
petroleum
suspension
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Expired - Lifetime
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    • 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

Definitions

  • a mixture of methanol and hydrocanbondiluent is removed overheadi fromfractionator 13 by line.1.6", through cooler'1'7 and line 18 and is recycled to the reactor; 1 by line. 4:
  • a mixture of urea-inactive components of: the feedstock together with hydrocarbon diluent is removed. from filter 6' by lines-19 and constitutes-:- thefinishedfuei; Liquidurea; is removed from the sepa-- ratorglo tby 1ine:20;an,d-is. passed to an. emulsifier 21 fed with hot-.fcedzoil. by line: 222from heater 28.
  • the emulsified-rurea/oil mixture is removed by line.- 23.

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  • 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)
US22655751 1950-05-17 1951-05-16 Production and use of a urea suspension Expired - Lifetime US2731457A (en)

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
US2731457A true US2731457A (en) 1956-01-17

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ID=10001784

Family Applications (1)

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US22655751 Expired - Lifetime US2731457A (en) 1950-05-17 1951-05-16 Production and use of a urea suspension

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US (1) US2731457A (d)
BE (1) BE503277A (d)
GB (1) GB714327A (d)
NL (1) NL75904C (d)

Cited By (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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049032B (de) * 1955-04-29 1959-01-22 Oelwerke Julius Schindler G M Verfahren zum kontinuierlichen Entparaffinieren von Kohlenwasserstoffoelen mittels Harnstoffaddukten
IT1096661B (it) * 1978-06-13 1985-08-26 Montedison Spa Procedimento per la preparazione di prodotti in forma sferoidale solidi a temperatura ambiente
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

Citations (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
US2499820A (en) * 1947-02-21 1950-03-07 Thiourea-hydrocarbon complexes
FR959374A (d) * 1947-01-07 1950-03-28
US2606140A (en) * 1948-12-30 1952-08-05 Texas Co Separation of wax constituents and the like from oil

Patent Citations (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 (d) * 1947-01-07 1950-03-28
US2499820A (en) * 1947-02-21 1950-03-07 Thiourea-hydrocarbon complexes
US2606140A (en) * 1948-12-30 1952-08-05 Texas Co Separation of wax constituents and the like from oil

Cited By (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

Also Published As

Publication number Publication date
NL75904C (d) 1954-09-15
GB714327A (en) 1954-08-25
BE503277A (d) 1951-06-15

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