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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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延迟焦化工艺弹丸焦生成的实验研究
, PP. 958-966
Keywords: 弹丸焦,原料性质,操作条件,添加物,光学结构
Abstract:
？以光学结构分析为主要表征手段,在小型焦化装置上,研究了弹丸焦的生成历程,以及原料性质、焦化工艺操作条件对弹丸焦生成的影响,分析了其原因,在此基础上提出了相应的抑制措施。结果表明,弹丸焦成焦历程为:原料→不稳定中间相小球体→镶嵌型中间相→弹丸焦;沥青质残炭之比大于0.5、氢碳原子比小于1.5、胶体稳定性参数小于3.5的焦化原料易生成弹丸焦;不同循环馏分对弹丸焦的抑制效果不同,以焦化重蜡油(420~500℃)的抑制作用最大;通过采取降低反应温度、升高反应压力、增大循环比以及向反应体系中添加一定量四氢萘或催化油浆等措施,可以抑制弹丸焦的生成。
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