新型富硅REHY分子筛及其催化剂的研制

为了进一步提高REHY分子筛的活性、稳定性及抗金属污染能力,研制了新型富硅REHY分子筛,用该分子筛制备的FCC催化剂与常规REHY催化剂相比,具有活性高、稳定性好、抗积炭能力及抗重金属污染能力强等特点,是一种优良的重油加工用催化剂。     

LB-1催化剂的性能及工业应用

LB-1催化剂是一种全白土型的分子筛催化裂化催化剂。通过对LB-1催化剂物化性质、孔径分布、裂化活性和抗重金属污染能力的分析及LB-1催化剂在9个炼油厂的实际应用,证实了LB-1催化剂具有裂化活性高、水热稳定性好、汽油选择性好和抗重金属污染能力强等特性。该剂适用于重油及其它劣质原料的催化裂化,是一种较理想的重油催化裂化催化剂。     

降低汽油硫含量的重油裂化催化剂的开发

摘要：降低汽油硫含量和重油催化裂化系列催化剂DOS的开发针对降硫组元及活性组元进行了研究，开发了降硫功能组元L酸碱对化合物和筛选了与之相匹配的分子筛活性组元。评价结果表明，开发的L酸碱对化合物能增加催化剂对大分子硫化物的转化，促进脱硫反应的发生；筛选的分子筛与L酸碱对化合物协同作用具有较好的降烯烃和降硫功能。开发的降硫重油裂化催化剂DOS在ACE装置和固定流化床装置评价结果表明：与工业降烯烃催化剂相比，重油转化能力强，抗重金属污染能力强，汽油硫含量可降低20％以上。     

油浆裂解助剂工业化应用

湖南聚力催化剂股份有限公司以SFIC技术为核心技术,专门为催化装置制备的JCM-180HW油浆催化裂化助剂,具有分子筛含量高、活性高、重油转化能力强、焦炭选择性好、轻油收率高、抗碱氮能力和抗重金属污染能力强等特点。     

LANET-35催化裂化催化剂简介

１产品概述和适用范围该催化剂是由石油化工科学研究院研制,兰州炼油化工总厂催化剂厂生产的一种新型重油催化裂化催化剂,于１９９７年７月通过了原中国石油化工总公司组织的鉴定。该催化剂以ＲＥＨＹ和改进的ＵＳＹ型沸石为活性组分,采用复合基质制成,具有重油转化能力强,焦炭选择性好,抗重金属特别是抗钒污染能力强等特点,适用于不同产品方案的各种重油催化裂化装置。该催化剂的典型理化性质和产品质量标准见表１。２产品特点（１）重油裂化能力强,活性高,稳定性好;（２）焦炭选择性好;（３）抗重金属特别是抗钒污染能力强;（…     

渣油裂化催化剂DVR-1的研制及其工业应用

开发了DVR -1渣油裂化催化剂 ,采用超稳Y型分子筛的改性技术及活性担体的开发技术 ,对催化剂配方进行了优化 ,使该剂具有渣油裂化能力强、活性高、抗重金属污染能力强、稳定性好的特点。燕山石化公司二套催化装置工业应用结果表明 ,加工大庆渣油在掺渣比高达 85 %时 ,轻质油收率仍能接近 70 %     

重油裂化催化剂RMS-8的工业应用

介绍新型重油裂化催化剂RMS-8在胜利炼油厂第二催化裂化装置的工业应用情况,结果表明,RMS-8催化剂具有较好的降烯烃性能、汽油选择性、抗重金属污染能力、重油裂解能力、活性和稳定性,适用于重油催化裂化装置。     

重油催化裂化催化剂RCH的开发与工业应用

RCH催化剂是继我国第一代超稳Y型催化裂化催化剂之后，开发研制的新型渣油裂化催化剂。该剂沸石含量低，而在裂化性能、产品收率、焦炭选择性等方面均与国内外同类型催化剂相当，可替代进口催化剂在重油催化裂化（RFCC）装置上使用；该剂更具有平衡活性和轻质油收率高、稳定性好、裂化重质油能力和抗重金属污染能力强等特点，同时制备工艺先进，流程简单，属国际先进水平。     

Orbit—3600抗钒重油裂化催化剂的开发与应用

Orbit-3600催化裂化催化剂是石油化工科学研究院和齐鲁石油化工公司催化剂厂合作为加工含钒重油,研制出新一代改性的超稳分子筛DM-1;采用加入胶态活性氧化铝的方式制备出具有大分子裂化活性的优良载体,并在载体中添加了特殊的捕钒物质而开发出的新型抗钒重油催化裂化催化剂。该催化剂在大连西太平洋石油有限公司重油催化裂化装置上与国外的优良重油催化剂进行了工业对比试验。试验结果表明,Orbit-3600催化剂具有良好的抗重金属污染能力,在平衡剂ω(Ni+V)>11000μg/g时仍具有较高的催化裂化活性。使用该催化剂后,装置处理能力提高12.1%,轻质油收率高,干气和焦炭产率低,汽油研究法辛烷值增加1.3个单位,催化剂单耗降低,是一种具有良好推广应用前景的加工高钒重油的催化裂化催化剂。     

LCH超稳Y型分子筛催化裂化催化剂的工业应用

LCH催化剂是新一代超稳Y型分子筛催化裂化催化剂。武汉石油化工厂重油催化裂化装置3个月的工业试验表明,LCH剂与从美国进口的Octacat、Octacat-D混合剂相比较,产品分布相同、裂化性能属同一水平,并且LCH剂有较好的平衡活性、稳定性及抗重金属污染能力。用LCH剂的汽油的马达法和研究法辛烷值与用Octacat、Octacat-D混合剂的相当,其汽油经精制后符合90号标准。LCH剂的研制开发,可满足我国重油催化裂化装置对超稳Y型分子筛催化剂的需求,为催化裂化催化剂的系列化提供了新品种。     

脂肪酸及其衍生物对低硫柴油润滑性影响的分子动力学模拟及实验研究

In this work, fatty acid and its derivatives were adopted as lubricity additives for low sulfur diesel. Tribological evaluation obtained from the High-Frequency Reciprocating Rig (HFRR) apparatus showe...     

环烷烃混合烯烃催化裂化：2. 单事件模型评估

The developed SEMK model is used to provide an insight into the contribution of individual reactions in the cracking of methylcyclohexane as well as the site coverage by various carbenium ions. The preferred reaction pathways for the conversion of methylcyclohexane are hydride transfer reactions followed by PCP-isomerizations, deprotonation and endocyclic β-scission, accounting for 61%, 22% and 12% of its disappearance, respectively, at 693 K and 30% conversion of methylcyclohexane. Protolysis plays a minor role in the cracking of methylcyclohexane. Once cyclic diolefins are formed, all of them can be instantaneously transformed to aromatics, which are easily interconverted via disproportionation. Judging from the carbenium ion concentrations it is evident that, at the investigated operating conditions, less than 5% of the acid sites are covered by carbenium ions, less than 2% of which corresponds to cyclic type species including allylic ones.     

Innovative Production of PCMs （Phase Change Materials） Preparation by Vacuum Impregnation： Mechanical Strength of Mortars Cement with Composite PCMs Content

An experimental investigation was conducted to study the efficiency of thermal insulation of composite PCMs （phase change materials） produced by vacuum impregnation process between paraffin （PCMs） and fly ash particles. DSC （differential scanning calorimeter） has been used to determine the thermal properties of latent heat of melting and heat capacity for composite PCMs. Vacuum impregnation pressure of 40 in.Hg, paraffin melting temperature of 90℃, vacuum time and impregnation time of paraffin of 30 min are the optimum condition of composite PCMs productions. The values of latent heat of melting and heat capacity are 74.00 J/g and 15.726 J/g.℃ for composite PCMs that produces by the optimum condition in vacuum impregnation process. Increasing the amount of composite PCMs replacing for cement in mortars causes the compressive strength, flexural strength and tensile strength reduction. Compressive strength, flexural strength and tensile strength of mortar with and without composite PCMs can be increased by the longer time of water curing for mortar specimens. Thermal conductivity （k） of mortar cement is reduced by increasing the amount of composite PCMs which replaced for cement in mortar plate compositions. Composite PCMs have the efficiency for thermal energy insulation when incorporated into the buildings. Therefore, this property of paraffin/fly ash composites PCMs can reduce the energy consumption for temperature control in the buildings.     

Innovative Production of PCMs （Phase Change Materials） Preparation by Vacuum Impregnation： Thermal and Physical Properties

Energy is essential for every human activity for more comfortable life but also consumes more natural resources. In order to control human comfort, temperature usually required when the differences in temperature swing between indoor and outdoor temperatures. PCMs （phase change materials） are the high latent heat materials which can be used in building materials for energy conservation purpose. PCMs can store thermal energy and also can prevent heat to pass through temperature control areas. Paraffin has been used as PCMs are absorbed into the pore of fly ash as paraffin/fly-ash composite and mixed into the buildings materials. Paraffin is an organic material with high melting point （-59℃）, and nonflammable materials therefore paraffin can be used as the building materials for the function of PCMs for energy saving purposes. Composite PCMs can be prepared by vacuum impregnation process. Paraffin in liquid form will be impregnated into the pore of fly ash by vacuum capillary force to form paraffin/fly ash composite PCMs. Vacuum impregnation pressures, vacuum times, impregnation times of liquid paraffin in fly ash pores and temperatures for melting the solid paraffin into the liquid form are all affect on the thermal properties of paraffin/fly ash composite PCMs. Paraffin or PCMs impregnation are also relate to the physical property including the fractal dimensions of the pores of the fly ash particles and paraffin/fly ash composite PCMs. The fractal dimensions of the pore of fly ash and paraffin/fiy ash composites PCMs are between the values of 1.0 and 2.0. Fractal dimensions of paraffin/fly-ash composite PCMs have the same trend as the thermal properties for heat capacity and latent heat of melting. These fractal dimensions technique is a novel method to measure physical property of building material related to latent heat and heat capacity.     

水滑石催化PET的合成及性能研究

Poly(ethylene terephthalate) (PET) was synthesized by the in-situ polymerization method using layered double hydrotalcite (LDH) as the catalyst, and the thermal and lfame retardation properties of PET ...     

Wear Behavior of Ductile Cast Irons with Nanoparticles Additives

The work in this study is focused on the investigation of the structure and properties of ductile cast iron with nanoparticle additives： TiN （titanium nitride）, TiN ＋ TiCN （titanium carbonitride） and cBN （cubic boron nitride）. The nanoparticles are coated with nickel prior to addition to the iron melt to improve their wetting and uniform distribution in the volume of the casting. The metallographic observation and wear test are performed to study the influence of the nanoparticle additives on the microstructure and and cast iron tribological properties.     

铝轧制油中添加剂分子活性与其润滑性能关系的研究

In this paper, an ab initio, local density functional (LDF) method was used to explore the relationship between the molecular properties of additives and the lubricating performance of aluminum rolling...     

柴油在硅藻土分散 NiMoW硫化催化剂上深度加氢脱硫研究

Diatomite-dispersed NiMoW catalyst was prepared and characterized, and the activity of catalyst samples was tested during the HDS reaction of FCC diesel. Sulfur compounds in the feedstock and the hydrogenated products obtained over different catalysts were determined by GC-PFPD. The test results showed that the diatomite-dispersed NiMoW catalyst had high hydrodesulfurization activity for FCC diesel, which could be contributed to the excellent hydrogenation perfor- mance of the said catalyst. Characterization of catalyst by TEM and XRD indicated that the diatomite-dispersed NiMoW catalyst possessed higher layer stacking, larger curvature of MoS2 or WS2, and segregated Ni3S2 crystals relative to the sup- ported catalyst. This kind of structure leads to high hydrogenation activity of the diatomite-dispersed NiMoW catalyst.     

C-Nanostructures Cluster Models in Organic Solvents： Fullerenes,Tubes, Buds and Graphenes

The existence of nanographene in cluster form is discussed in organic solvents. Theories are developed based on the columnlet, bundlet and droplet models describing the size-distribution functions. Phenomena present a unified explanation in the columnlet model in which free energy of Cgraphene involved in cluster is combined from a volume part proportional to the number of molecules n in cluster and a constant. The columnlet model enables describing distribution function of Cgraphene clusters by size. From purely geometrical considerations the columnlet （Cgraphene）, bundlet （single-wall carbon nanotube）, CNT （carbon nanotube）, SWNT （single-wall C-nanotube）, and carbon nanobud, CNB （carbon nanobud）） and droplet （fullerene） models predict dissimilar behaviours. The interaction-energy parameters of Cgraphene are taken from C60. An CNB behaviour or further is expected. The decay of solubility with rising temperature is smaller for Cgraphene than for SWNT and CNB and, furthermore, than for C60, in agreement with lesser numbers of units in Cgraphene clusters. The discrepancy between the experimental data of the heat of solution of fullerenes, CNTs, CNBs and graphenes is ascribed to the sharp concentration dependence of the heat of solution. The diffusion coefficient drops with temperature result greater for Cgraphene than CNB and SWNT than C60 corresponding to lesser number of units in clusters. The aggregates near （C60）13, SWNT/CNB7 and （Cgraphene）3 could be representative of the droplet, bundlet and columnlet models.     

晶种添加法合成微米颗粒ZSM-5分子筛结晶度的影响因素

ZSM-5 zeolite microparticles （MPs） were synthesized under hydrothermal condition using a low crystal seed addition approach without template. The synthesis parameters such as the seed addition amount, the SiOJA1203 ratio, the aluminum source, the feeding addition method, aging, and crystallization were investigated. The structure, morphology and composition of the as-synthesized ZSM-5 zeolite MPs were characterized by X-ray powder diffraction （XRD）, scanning electron microscopy （SEM）, laser particle size distribution （PSD） measurements, and inductively coupled plasma-atomic emission spectrometry （ICP-AES）. The SIO2/A1203 ratio of ZSM-5 zeolite MPs was in the range of 20~80. The low seed addition was beneficial to improving the crystallinity and shortening the crystallization time, and the suitable amount of seed was 0.25% （SIO2）. The ZSM-5 zeolite MPs synthesized with aluminium nitrate nonahydrate used as the aluminum source exhibited a relatively high crystallinity. An appropriate aging time could eliminate the effect of feeding addition method and effectively adjust particle size. The particle size of ZSM-5 zeolite obtained at an aging time of 20 h was around 2.0 I.tm. Prolonging the aging time appropriately could also shorten the high-temperature crystallization time. The suitable aging time was 24 h, and the relative crystallinity of ZSM-5 zeolite could reach up to 99% after crystallization for 24 h at 180 ℃