GB968873A - Process for dewaxing hydrocarbon oils - Google Patents
Process for dewaxing hydrocarbon oilsInfo
- Publication number
- GB968873A GB968873A GB333361A GB333361A GB968873A GB 968873 A GB968873 A GB 968873A GB 333361 A GB333361 A GB 333361A GB 333361 A GB333361 A GB 333361A GB 968873 A GB968873 A GB 968873A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- temperature
- solution
- dispersion
- adducts
- 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
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
- C10G73/00—Recovery or refining of mineral waxes, e.g. montan wax
- C10G73/02—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils
- C10G73/24—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils by formation of adducts
-
- 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)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Hydrocarbon oils are dewaxed by forming urea adducts of paraffins with a dispersion of urea prepared by stirring urea or a saturated aqueous solution thereof with an organic dispersion medium at or below the "formation" temperature (at which on cooling a mixture of the organic medium and the saturated urea solution from above its saturation temperature sedimentation of urea ceases on further cooling) and, when a saturated solution of urea is used, also below the saturation temperature of the solution. It is preferred to use an aqueous urea solution having a saturation temperature of 55-105 DEG C., preferably 55-80 DEG C., and to form the adduct below the demixing temperature, i.e. the temperature at which the dispersion on being heated separates into aqueous and an organic solvent phases. As dispersion media there may be used halogenated hydrocarbons, ketones, aliphatic hydrocarbons which do not form adducts with urea, esters, ethers or aliphatic amines, methylene chloride, acetone and octane being preferred. The adducts formed between oils and such urea dispersions are easily separated and are decomposed, e.g. with steam. The urea solution thereby obtained is concentrated, mixed with organic solvent and cooled below the "formation" temperature by allowing a part of the solvent to evaporate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE18799A DE1097605B (en) | 1960-01-27 | 1960-01-27 | Process for dewaxing hydrocarbon oils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB968873A true GB968873A (en) | 1964-09-02 |
Family
ID=7069849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB333361A Expired GB968873A (en) | 1960-01-27 | 1961-01-27 | Process for dewaxing hydrocarbon oils |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1097605B (en) |
| FR (1) | FR1277940A (en) |
| GB (1) | GB968873A (en) |
| NL (1) | NL260354A (en) |
-
1960
- 1960-01-27 DE DEE18799A patent/DE1097605B/en active Pending
-
1961
- 1961-01-23 NL NL260354D patent/NL260354A/xx unknown
- 1961-01-26 FR FR850860A patent/FR1277940A/fr not_active Expired
- 1961-01-27 GB GB333361A patent/GB968873A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL260354A (en) | 1964-04-27 |
| DE1097605B (en) | 1961-01-19 |
| FR1277940A (en) | 1961-12-01 |
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