催化剂级配在加氢裂化装置中的应用

采用催化剂级配技术,对中国石油四川石化有限责任公司2.7 Mt/a加氢裂化装置的两个反应器进行改造;并对调整原料性质及操作条件(尽量接近于第一周期标定工况数据)后的第二周期应用情况进行了催化剂活性、产品分布、产品质量、操作安全性等对比分析。实验结果表明,通过催化剂活性级配和加氢选择性级配,实现了多环芳烃的进一步转化,最大程度保留链烷烃在尾油组分中,与第一周期相比,喷气燃料烟点提高3.0 mm,尾油芳烃指数降低6.5个单位;第二周期转化率(282℃)控制在79%、尾油切割点为252℃工况下,重石脑油与喷气燃料总收率可达60.9%,实现多产重石脑油与喷气燃料的目标;降低了反应器压降和循环氢压缩机的能耗,节约了投资成本。     

FF-20加氢裂化预处理催化剂的研制

FF-20催化剂是FRIPP研制的新型高活性加氢裂化预处理催化剂。该催化剂以改性氧化铝为载体,采用一次浸渍法担载W、Mo、Ni金属组分,具有孔容大、比表面积大、孔分布集中、金属分布均匀等特点。催化剂性能评价试验结果表明：该催化剂用于加工处理国内外典型高硫蜡油,具有加氢脱硫脱氮活性高、芳烃加氢饱和能力强、稳定性好等特点,是一种性价比较高的馏分油加氢处理催化剂。     

中压加氢裂化生产合格喷气燃料技术开发与应用

为满足市场对喷气燃料的需求并与企业现有装置相契合，中国石化石油化工科学研究院（简称石科院）开发了生产合格喷气燃料的中压加氢裂化技术。通过考察反应压力、裂化催化剂、原料油、转化深度及体积空速对喷气燃料性质的影响规律，提出了中压条件生产合格喷气燃料的加氢裂化技术方案。中压加氢裂化生产合格喷气燃料技术在中国石化上海石油化工股份有限公司1.5 Mt/a中压加氢裂化装置得到工业应用，在国内首次实现了中压条件下蜡油生产合格喷气燃料。装置工业标定结果表明，采用该技术加工高硫减压蜡油（VGO）馏分，在氢分压约10 MPa的条件下，喷气燃料馏分收率达到20%以上，且满足3号喷气燃料质量要求，尾油馏分BMCI值约为10，是优质的裂解制乙烯原料。     

Platinum‐promoted fibrous silica Y zeolite with enhanced mass transfer as a highly selective catalyst for n‐dodecane hydroisomerization

A fibrous silica zeolite Y (HY@KCC‐1) catalyst with a high surface area of 568 m²/g and unique core‐shell morphology was successfully synthesized via a modified KCC‐1 synthesis method. Characterization of the catalysts was achieved with X‐ray powder diffraction (XRD), field emission scanning microscope (FESEM), N₂ adsorption/desorption, and 2,6‐dimethylpyridine adsorbed Fourier‐transform infrared spectroscopy (FTIR). The Pt/HY@KCC‐1 has displayed complete n‐dodecane conversion coupled with an incredibly enhanced isomer yield of 72% at 350°C, nearly two‐fold higher than that of unmodified Pt/HY catalyst. Remarkably, Pt/HY@KCC‐1 had an internal effectiveness factor (η) of unity and negligible internal diffusion limitation, thus suggesting its potential application in hydroisomerization of higher hydrocarbons for enhancing fuel properties.     

The relationship between chemical structure and reactivity of alberta bitumens and heavy oils

Long residues (424°C +) from Athabasca, Cold Lake, Lloydminster, and Peace River were hydrocracked over a commercial NilMo on y-alumina catalyst at 430°C, 13.9 MPa (2000 psia). The conversion of residue fraction ranged from 55 to 68%, and was correlated with the concentration of carbon bound to aromatic rings in the feeds. Conversions of sulfur, Micro-Carbon Residue, and metals were all highest for Peace River feed, following the same ranking as residue conversion. Estimates for the breakage of carbon-carbon bonds and the uptake of hydrogen were diagnostic in interpreting the reactor performance.     

悬浮床加氢裂化尾油旋液分离实验研究

针对重油悬浮床加氢工艺循环油浆液固密度差小、胶质沥青质含量高等特点,设计加工了油浆分离用旋液分离器,热模试验结果表明旋液分离器对于循环油浆中的甲苯不溶物具有较好的分离效果;同时对于油浆中的胶质沥青质具有一定的分离效果,可在一定程度上改善循环油浆性质、延缓设备反应器结焦趋势.     

Catalytic conversion ofHevea brasiliensis andVirola sebifera oils to hydrocarbon fuels

Catalytic hydrocracking ofHevea brasiliensis (Seringa) andVirola sebifera (Ucuuba) oils was carried out in the presence of a NiMo/Al₂O₃ catalyst sulfidizedin situ with elemental sulfur at 360°C. The initial pressure of hydrogen was 140 bars. Conversions of nearly 100% of the vegetable oils were achieved. The compositions of the liquid fuels were studied in detail by gas chromatography/mass spectrometry. The main products were found to be alkanes, cycloalkanes, aromatics and carboxylic acids.     

四氢萘在含USY分子筛Mo－Ni加氢裂化催化剂上反应的研究

在国产３８２５型加氢裂化催化剂上，利用连续流动固定床微型反应装置，在４．５～８．５ＭＰａ和３２０～３８０℃条件下，测定了四氢萘加氢反应动力学数据，建立了四氢萘加氢裂化的反应网络和动力学模型。     

页岩油加氢裂化生产柴油的研究

采用加氢精制和加氢裂化技术对w(硫)=0.5 %、w(氮)=1.2 %,w(芳烃)=32 %的页岩油进行加氢改质,160～370 ℃柴油馏分性质满足GB252-2000柴油质量标准,收率达59 %～60 %.