PROCESS FOR RECOVERING SOLVENT DURING HYDROCARBON PROCESSING

• Main Authors: MA FUXIANG, XU YIFANG, LI ZHONGZE, ET AL
• Format: Patent
• Language: English
• Published: 01.04.1992
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CRACKING HYDROCARBON OILS; FUELS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

This invention results from the research on heat exchange network theory. In multiple effect evaporation system with variable cold or hot flow, the recovered heat is maximum and the area for heat transfer is economically reasonable when more narrow points exist. For an industrial apparatus to refine furol as lubricant with an output of 320 thousands tons/year, the energy consumption may be saved by 20-35% as compared with dual-tower furol recovery process. After technical reformation to existing three-tower recovery process, its energy consumption is saved by 10-20% and the area for heat transfer by 10-30%.