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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0920090 (1986-10-17) |
우선권정보 | FR-0015552 (1985-10-17) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 7 인용 특허 : 14 |
In a deasphalting process wherein the deasphalted oil is separated from the deasphalting solvent, the invention consists of performing said separation in at least two separate steps, differing by their temperatures, and of recovering heat from the deasphalted oil. The oil to be deasphalted (26) pass
In a deasphalting process, wherein an asphalt-containing oil is subjected to extraction by means of a solvent selected from hydrocarbons having 3 to 6 carbon atoms and mixtures thereof, an oil phase of raw extract and an asphalt phase of raw raffinate are separately recovered and solvent is separate
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