The pyrolysis of Zhalaiteqi oil sand was undertaken with a fixed-bed reactor under nitrogen atmosphere.Effects of pyrolysis temperature,time and flow rate of carrier gas on the oil and water yield were analyzed in detail.Optimum pyrolysis condition of the oil sand was determined as well.The oil yield from NO.2 and NO.6 oil sand is 12.55% and 7.18%,respectively.It is 22.92% and 43.03%,respectively,higher than the carbonization result with aluminum retort.The results indicate that pyrolysis is a good way for Zhalaiteqi oil sand to produce oil.
油页岩热解过程中产生大量的高质量浓度含酚废水无法排放,文中采用溶剂萃取法,以甲基叔戊基醚(TAME)为溶剂,针对页岩油含酚废水的处理进行初步研究。通过实验和Aspen P lus软件模拟相结合来考察TAME的萃取脱酚性能,研究了不同温度和相比条件下错、逆流萃取流程的分离性能。结果表明:TAME的脱酚能力很强,对苯酚的分配系数在40—60之间,pH值在2—10时萃取率达95%以上。此外比较了错、逆流3级萃取工艺,综合考虑萃取效果和溶剂用量,逆流多级萃取远远优于错流多级萃取,塔内3级萃取相比为2时出口废水酚质量浓度可降到1 mg/L以下,且受温度影响不明显。可见TAME的脱酚性能优异,在酸碱性体系中均适用,同时TAME原料易得,成本较低,可以作为含酚废水萃取工艺的萃取剂。
