The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content (103ppm), high carbon residue content, low ...The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content (103ppm), high carbon residue content, low pour point, and low acid value. Based on the crude processing conditions at SINOPEC Luoyang Petrochemical Branch Company, a proposal on the appropriate process flow scheme for processing Tahe crude oil has been raised with the main ideas presented as follows. The IBP-175 fraction is not an ideal feedstock for catalytic reforming; the 75-250 fraction is a qualified feedstock for zeolite de-waxing; the 140-230 fraction can be used to manufacture the No. 3 jet fuel through appropriate distillation range adjustment and product refining; the 175-350 fraction can be directly used to manufacture No.-10 diesel through proper refining; the atmospheric resid boiling over 350 is not suited to be used as the RFCC feedstock; the 350-520 vacuum distillate oil can be used as the FCC feedstock; and the vacuum residuum boiling over 520 is a good feedstock for manufacture of asphalt.展开更多
The isolation and characterization of vanadium porphyrins in Tahe crude oil has been carried out. The vanadium porphyrins were at first isolated by methanol extraction and then purified by column chromatography and th...The isolation and characterization of vanadium porphyrins in Tahe crude oil has been carried out. The vanadium porphyrins were at first isolated by methanol extraction and then purified by column chromatography and thin layer chromatography. Ultraviolet-visible spectrophotometry and laser desorption ionization-time of flight mass spectrometry were employed to characterize the vanadium porphyrins. The vanadium porphyrins in Tahe crude oil are chiefly ETIO homologues(C 26～C 39) with a small amount of DPEP homologues (C 29～C 39) and RHODO-ETIO homologues(C 29～C 39).展开更多
文摘The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content (103ppm), high carbon residue content, low pour point, and low acid value. Based on the crude processing conditions at SINOPEC Luoyang Petrochemical Branch Company, a proposal on the appropriate process flow scheme for processing Tahe crude oil has been raised with the main ideas presented as follows. The IBP-175 fraction is not an ideal feedstock for catalytic reforming; the 75-250 fraction is a qualified feedstock for zeolite de-waxing; the 140-230 fraction can be used to manufacture the No. 3 jet fuel through appropriate distillation range adjustment and product refining; the 175-350 fraction can be directly used to manufacture No.-10 diesel through proper refining; the atmospheric resid boiling over 350 is not suited to be used as the RFCC feedstock; the 350-520 vacuum distillate oil can be used as the FCC feedstock; and the vacuum residuum boiling over 520 is a good feedstock for manufacture of asphalt.
文摘The isolation and characterization of vanadium porphyrins in Tahe crude oil has been carried out. The vanadium porphyrins were at first isolated by methanol extraction and then purified by column chromatography and thin layer chromatography. Ultraviolet-visible spectrophotometry and laser desorption ionization-time of flight mass spectrometry were employed to characterize the vanadium porphyrins. The vanadium porphyrins in Tahe crude oil are chiefly ETIO homologues(C 26～C 39) with a small amount of DPEP homologues (C 29～C 39) and RHODO-ETIO homologues(C 29～C 39).
