Commercial Application of RMC Technology in the 1.5 Mt／a Hydrocracking Unit at Shanghai Petrochemical Company

The RMC technology developed by RIPP has been applied in a 1.5Mt/a medium pressure hydrocracking unit at Shanghai Petrochemical Company. The unit was successfully put on stream in September 2002. Calibration of the performance of the commercial unit has shown that the RMC technology has higher hydrogenation activity and selectivity, and high quality product can be obtained under lower reaction temperature. The heavy naphtha with less than 0.5 ppm of sulfur and 58.5 m% potential aromatic content is a good feedstock for catalytic reforming unit. The diesel with less than 0.5 ppm of sulfur, 6.6 m% aromatics and cetane rating of 56 is a high-grade diesel fuel. The hydrocracked tail oil containing more than 14 m% hydrogen and mere 1.7m% aromatics could be used as a good feedstock for steam cracking process to produce ethylene.     

The First Commercial Application of Homemade Adsorbent for Aromatics

The first commercial application of homemade RAX-2000 adsorbent for aromatics was tested successfully on the aromatics unit of Qilu Company, SINOPEC and qualified paraxylene product had been produced. 158 tons of homemade RAX2000 adsorbent had been used on the aromatics unit of Qilu Company. The cost decreased by 10,000,000 RMB as compared with purchasing imported adsorbent. After RAX-2000 adsorbent was applied in this aromatics unit,     

PROGRESS IN CATALYST AND PROCESS DEVELOPMENT FOR LOW SULFUR AND LOW AROMATICS DIESEL PRODUCTION

The article includes three parts:①The development and performance of FH-DS catalyst for deep and ultra -deep distillate HDS;②The single stage HDS/HDA hydrotreating process for the production of low sulfur and low aromatics diesels from straight run and coker AGO by using highly active base metal catalyst at moderate pressure;③A two-stage aromatics saturation system utilizing noble metal catalyst in the second stage developed for production of low sulfur and low aromatics diesel from LCO.FDA catalyst developed by FRIPP has high activity for aromatics saturation together with high tolerance for sulfur and nitrogen in the feed.The process is effective in reducing density and increasing cetane number.     

Commissioning of 100 kt/a Project for Manufacture of Aromatics from Methanol at Shaanxi Baoji Nitrogen Chemicals Group

正In January 2016 the first phase of the 100 kt/a project for production of aromatics from methanol has been successfully delivering light aromatics,heavy aromatics and LPG at the Shaanxi Baoji Nitrogen Chemicals Group.This project applies the proprietary process for one-step conversion of methanol to aromatics in the adiabatic fixed-bed reactor jointly developed by the     

基于1H NMR和XRD表征重油组分平均分子结构

The chemical structure of heavy oil fractions obtained by liquid-solid adsorption chromatography was character-ized by 1 H nuclear magnetic resonance and X-ray diffraction.The molecular weight and molecular formula of asphaltene molecules were estimated by combining 1 H nuclear magnetic resonance and X-ray diffraction analyses,and were also ob-tained from vapor pressure osmometry and elemental analysis.Heteroatoms,such as S,N,and O atoms,were considered in the construction of average molecular structure of heavy oils.Two important structural parameters were proposed,including the number of alkyl chain substituents to aromatic rings and the number of total rings with heteroatoms.Ultimately,the av-erage molecular structures of polycyclic aromatics,heavy resins and asphaltene molecules were constructed.The number of α-,β-,γ-,and aromatic hydrogen atoms of the constructed average molecular structures fits well with the number of hydro-gen atoms derived from the experimental spectral data.     

Commercial Application of the PS-VI Catalyst in the Revamped 0.8 Mt/a Catalytic Reforming Unit

1 Introduction The CCR unit at Tianjin Petrochemical Company (TPC), which operates on naphtha to make aromatics with hydrogen as the by-product, is a leading unit of the 0.2 Mt/a polyester project. This CCR technology was licensed by UOP, and the SINOPEC Beijing Design Institute (BDI)— — the major contractor - made the engineering design. The original capacity of this CCR unit was rated at 600 kt/a and the unit worked on refined virgin naphtha and hydrocracked heavy naphtha. The…     

Mechanistic Insights into the Catalytic Cracking of Cyclohexane

Although naphthenes have long been identified as important feedstock components for the production of light olefins and aromatics in fluid catalytic cracking units, their cacking mechanism and microscopic reaction networks, such as activation modes, ring-opening paths, and the production of aromatics, remain debated. In this context, we reported experimental and computational work aimed at elucidating the reaction network of naphthenes in fluid catalytic cracking using cyclohexane as the model n...     

NEW REFORMING CATALYST DEVELOPED BY RIPP

To meet the demands for high-octane gasoline and aromatics,catalytic reforming process has been advancing quickly in China.The reforming catalysts developed by RIPP have been used in more than 80% capacity of domestic CCR and SR units.This paper introduces the properties of PSVI CCR catalyst developed by RIPP in recent years and also the result from commercial units.The PS-VI catalyst has high activity and good selectivity,under the same reaction conditions,the carbon on catalyst was lowered by 26% in mass as compared with that of the reference catalyst.Among the SR reforming catalysts,the new type of PRT series catalysts have excellent performance at low reaction pressure compared with the ref.Cat A.The aromatics and reformate mass yields of PRT catalyst were 2%-3% and 3%,respectively ,higher than those of Cat A,and the run length was 30%-40% longer as well,which exhibits good prospect of application.     

Study on Process for Manufacturing Heavy Traffic Asphalt from Gudong Crude

The Gudong crude from Gudao oil-bearing region in the Shengli oilfield was used as the target for studying the process of manufacturing heavy traffic road asphalt. The heavy traffic road asphalt products can be made from Gudong crude through blending residuum from mild thermal conversion of vacuum resid with extract, blending the deoiled asphalt from VR propane deasphalting with vacuum resid and the extract, and blending of oxidized hard asphalt originated from VR with the extract.     

Study on Producing Heavy Paving Asphalt

The highly viscous crude oil from Shuguang No.1 zone of Liaohe oifield features high density,high viscosity and low wax content.It contains no gasoline fraction and its diesel oil fraction yiled is only 7.19%,which belongs to the low sulfur naphthenic stocks crude oil.Its heavy fraction is not suited for producing lubricating oil.Its heavy oil,whick contains more resins nd asphaltens and less wax,is not an ideal feedstock for catalytic cracking ,but is the ideal raw material for producing high-grade paving asphalt.Now this highy viscous crude oil is used as fuel oil after being emulsified in Liaohe oilfield,but its viscosity is so hight tha it cannot be atomized uniformly and burned completely,resuting not only in waste of oil resource but also in reduction of economical benefit.To make full use of this oil resource and alleviate the shortfall of high grade paving asphalt in China,various brands of asphal meeting Q/SHR003-1998 and ESSO specifications were developed by blending vaceuum residue of the said oil and a blending compo-net which are rich in aromatics and deficient in wax.The impct of blending component on proerties of blended ashalt has been investigated and road perfomances of these blended asphalts were studied.The labroatory test results show that the blended asphalts have good road performance and antiaging property.     

硼硅分子筛的合成及催化重质原料重整反应性能

在Na₂O-TEAOH-B₂O₃-SiO₂-H₂O体系中,以水热法合成了硼硅分子筛,考察了合成条件对硼硅分子筛合成的影响,并以所合成的硼硅分子筛为载体制备催化剂,考察其对重质原料重整反应的催化性能。结果表明：模板剂投量及SiO₂/B₂O₃配比对分子筛产物的晶型起关键作用,选择适宜的条件可以合成出高结晶度的硼硅β分子筛。以正十三烷为重质原料模型化合物时,负载Pt的硼硅β分子筛催化剂具有较好的芳构化性能,产物中C₉+芳烃含量较低,BTX（苯、甲苯和二甲苯）和萘的收率明显高于使用PR-D工业重整催化剂时的结果。以Pt/硼硅β分子筛催化剂处理重质原料时,反应压力不宜过低,高温、低空速有利于BTX的生成。     

纳米ZSM-5分子筛在C10芳烃轻质化中的催化性能

以C10芳烃中的主要组分四甲苯和二乙苯为模型化合物,用脉冲反应器研究其在纳米ZSM-5分子筛催化剂上的轻质化反应。结果表明：在纳米ZSM-5上,低温时均四甲苯主要进行异构反应,高温时则发生脱烷基反应和烷基转移反应,反应空速对该反应的竞争影响较大;二乙苯主要进行脱烷基反应;若以BTX（苯、甲苯、二甲苯)的生成量最大为目标,则这两类反应物均宜在低温和高催化剂用量的条件下进行反应,这也可作为工业C10混合芳烃轻质化的最佳反应条件。     

芳烃生产技术展望

通过对分离技术、反应生成技术、目的产品转移技术、甲基烷基化技术以及组合工艺最大程度增产芳烃技术等国内外芳烃生产技术进展进行分析,总结出近年来芳烃生产的技术进步与创新主要体现在催化剂和吸附剂性能的提高、新型反应及分离工艺的开发与应用、采用组合工艺最大化增产芳烃、单位产品物耗能耗的降低、装置规模的不断扩大等方面,而芳烃生产原料短缺是长期困扰芳烃生产的现实问题。归纳了紧紧围绕拓宽原料来源、开发新型高性能催化剂与吸附剂、应用组合生产工艺和装置大型化等芳烃生产技术发展趋势,提出了以建设国产化大型芳烃联合装置为契机,加快开发并形成原料多样化、产品结构调整灵活、物耗能耗更低并具有自主知识产权的芳烃成套生产技术的建议。提出应加快开发LPG、轻烯烃、芳烃抽余油等轻烃芳构化技术,使芳烃副产进一步增值;加强炼油-化工资源的一体化工作,充分利用催化裂化轻循环油、裂解重质汽油、炼厂重质芳烃以及煤焦油用以生产BTX;加大芳烃与煤化工结合的力度,尽快工业化实施甲苯甲基化生产二甲苯技术;进一步拓展生产芳烃的原料,开发并利用甲醇、纤维素等生物质生产芳烃新技术。     

重质油裂解制烯烃的HCC工艺

Ｈ Ｃ Ｃ 工艺（ Ｈｅａｖｙ － ｏｉｌ Ｃｏｎｔａｃｔ Ｃｒａｃｋｉｎｇ Ｐｒｏｃｅｓｓ） 是针对乙烯生产原料重质化而开发研究的。主要是采用类似于催化裂化的流态化“反应－ 再生”工艺技术,在性能良好的催化剂上,实现重油直接裂解制乙烯,并兼产丙烯、丁烯和轻质芳烃,有效地拓宽了乙烯生产原料的选择范围。在典型的工艺条件下,不同的重质原料油（ Ｂ Ｍ Ｃ Ｉ 值为２０ ～５０） 在中型提升管装置上,其乙烯质量产率可达１９ ％ ～２７ ％ ,其中,石蜡基常压渣油在优化的工艺条件下, Ｃ２ ～ Ｃ４ 总烯烃质量产率超过５０ ％ 。     

载钼分子筛催化剂上C9+重芳烃轻质化的研究

 采用等体积浸渍法制备了不同分子筛负载的氧化钼催化剂,考察了它们在工业C9+重芳烃轻质化制苯、甲苯和二甲苯（BTX）反应中的催化活性,并采用X射线衍射、程序升温还原、N2吸附、吡啶吸附红外光谱和氨程序升温脱附等技术研究了分子筛载体对其所负载的氧化钼催化剂催化C9+重芳烃轻质化反应性能的影响。结果表明,分子筛载体对氧化钼催化剂催化C9+重芳烃轻质化反应性能的影响较大。分子筛孔道内与B酸位相互作用的Mo物种的存在极大地降低了反应的BTX选择性;催化剂上B酸的存在、酸量增加以及比表面积增大都可以提高反应的C9+芳烃转化率;一定范围内B酸的存在和酸量的增加均有利于苯、甲苯和二甲苯的生成,但酸量过多将促使二甲苯向苯和甲苯转化。MoO3/HMCM-56催化剂催化C9+重芳烃轻质化反应性能优异,在温度550 ℃、压力3.0 MPa、重芳烃质量空速（MHSV）3.62 h-1和氢/烃体积比1600的反应条件下,其BTX收率高达67.3%。     

由C4～C8轻烃制取三苯

以油田生产的轻烃（Ｃ４～Ｃ８）为原料,在Ｇａ／Ｚｎ／ＺＳＭ－５催化剂上芳构化,并给出催化剂在１００ｍｌ（催化剂填装量）试验装置上进行稳定性考核的１０００ｈ试验结果。在反应温度为５５０℃、ＷＨＳＶ为０５ｈ－１、反应转化率为９６％时,芳烃质量收率可达５５５１％。在此基础上,讨论了轻烃（Ｃ４～Ｃ８）制取三苯的３×１０４ｔ／ａ工业中试装置的设计及工艺流程。     

催化裂化汽油中芳烃在酸性催化剂上反应规律的研究

在提升管中型催化裂化装置上,采用MLC-500催化剂,分别以全馏分和重馏分汽油为原料研究在催化转化过程中,汽油中的芳烃在不同反应温度下的转化规律.结果表明,以全馏分汽油为原料,反应温度较低时,主要发生芳环的烷基化反应;在较高温度下,芳环的烷基化反应和芳环上侧链的裂化反应都比较明显.以重馏分汽油为原料,在实验温度范围内主要发生芳环上侧链的裂化反应,随着反应温度的提高,裂化向含有较少碳数的芳烃转移.     

乙苯负压绝热脱氢生产苯乙烯工业试验

利用国内开发的负压绝热乙苯脱氢制苯乙烯技术，在１０００ｔ／ａ苯乙烯中试的基础上，建立了３万ｔ／ａ苯乙烯工业装置。经过两年多的生产运行，主要技术指标：物耗ｗ（乙苯）／ｗ（苯乙烯）＝１．０７２、乙苯转化率６５．９６％、苯乙烯选择性９７．２％。该指标达到国际同类装置的水平。     

Ni-Mo-W型与Co-Mo型催化剂多环芳烃选择性加氢饱和工艺研究

以催化裂化柴油为原料,采用Ni-Mo-W/γ-Al_2O_3与Co-Mo/γ-Al_2O_3加氢精制催化剂,在中型加氢实验装置上,考察加氢工艺参数对两种类型催化剂多环芳烃选择性加氢饱和反应的影响。结果表明:在相同反应温度条件下,Ni-Mo-W型的多环芳烃饱和活性优于Co-Mo型的多环芳烃饱和活性;Co-Mo型的单环芳烃选择性与单环芳烃产率优于Ni-Mo-W型的单环芳烃选择性与单环芳烃产率;并且Ni-Mo-W型催化剂多环芳烃选择性加氢饱和性能更容易受到工艺参数的影响。为实现高多环芳烃饱和率下单环芳烃的产率最大化,芳烃饱和性能较高的Ni-Mo-W型催化剂适合选择较低的反应温度,芳烃饱和性能较低的Co-Mo型催化剂适合选择中等的反应温度和较高的反应压力。     

分段混氢催化重整工艺

大庆石油化工总厂催化重整装置是在1965年12月建成投产的.这是根据我国自己的研究成果,并经过中型放大试验后建成的我国第一套铂重整—芳烃抽提联合装置.十五年来运转正常.装置主要目的是为了生产苯、甲苯和二甲苯,而不是为了生产高辛烷值的车用汽油组分.因此重整反应生成油直接进行芳烃抽提,所得的芳烃再经自土精制和精馏后,即得合格的苯、甲苯和二甲苯商品.