重整预加氢催化剂LY-2010R性能评价

开发了加氢活性优异、高空速运转能力强的重整预加氢催化剂LY-2010R,并与国内主流催化剂进行了长周期对比评价。结果显示,LY-2010R催化剂加氢脱硫、脱砷性能略优于对比剂,脱氮性能与对比剂相当。LY-2010R催化剂可在高空速12 h-1下将原料加氢合格,同时可用于高硫、高氮杂质原料加氢精制。     

重整预加氢催化剂国内外技术进展

催化重整预加氢催化剂主要是由载体和金属活性组分组成,最常用的预加氢催化剂的金属组分是Co-Mo、Ni-Mo、Ni-W体系.主要论述了催化重整预加氢催化剂的国内外技术进展,着重论述了国内重整预加氢催化剂的性质、特点及研发单位,提出了重整预加氢催化剂的发展方向,催化重整预加氢催化剂对直馏汽油要有良好的适应性,空速高,反应温...     

RS-20重整预加氢精制催化剂的工业应用

将RS-20催化剂成功的应用于重整装置上,在低温、高空速下操作条件下,精制产品满足重整进料要求;RS-20催化剂用于处理直馏汽油,具有较高的反应活性,同其它重整预加氢催化剂相比,在相同的反应温度、氢分压、氢油比条件下,可以采用更高的空速,精制原料完全满足重整进料要求。     

催化重整原料预加氢催化剂及其工业应用

重整催化剂活性组分中含有贵金属,因此对重整原料中的硫、氮和砷等杂质含量提出了严格要求。为确保重整装置的长周期稳定运转,使重整催化剂能够充分发挥其催化性能,需设置原料预处理单元,一般采用加氢精制工艺去除有害杂质。随着煤化工的发展,煤基石脑油也将成为重整过程原料的来源,针对煤基石脑油开发相关的加氢催化剂也将成为研究重点。综述了催化重整原料预加氢催化剂的活性组分及其结构模型理论。主活性组分一般为Mo或W,助活性组分一般为Co或Ni。针对不同原料,需选取不同活性组分。其结构模型理论指出,活性组分与载体可生成四面体或八面体配位,只有八面体配位才能有效地发挥作用。同时对催化剂载体的研究进行了综述,包括工业化应用广泛的γ-Al₂O₃及对其改性方法和新型载体的研发。介绍了目前工业化预加氢催化剂的应用情况。指出未来重整预加氢催化剂将向着活性高、选择性高及稳定性好的方向发展。     

浅析抽余油回炼对重整操作的影响

介绍了抽余油回炼至重整预分馏塔前后对重整预加氢反应部分、重整反应部分、预加氢催化剂、重整催化剂以及重整产品分布情况的影响。得出抽余回炼后增加重整原料效果明显,通过近半年的运行来看对重整操作影响较小。     

高含氮石脑油重整预加氢催化剂的选择

针对呼和浩特石化公司重整预加氢原料石脑油氮含量升高的问题,用新型HPL-2加氢催化剂进行了评价试验,得到了很好的结果,并提出了商业石脑油重整预加氢催化剂的选择原则.     

KT405高氯容脱氯剂在重整装置上成功应用

ＫＴ４０５高氯容脱氯剂在重整装置上成功应用胜利炼油厂重整装置１９９２年１０月进行局部技术改造，在预加氢反应器之后加一脱氯床，装人由化工部西北化工研究院昆山联营厂研制和生产的ＫＴ４０５脱氯剂进行脱氯．工艺参数为：压力１．７ＭＰａ，温度３００℃，空速１．...     

催化汽油掺炼作重整原料评价试验

分别以直馏石脑油、掺入催化汽油的直馏石脑油及掺入催化重汽油的直馏石脑油为原料,进行了CA-1催化剂与进口重整原料预加氢催化剂的对比评价,考察催化剂加氢脱硫、加氢脱氮性能及处理劣质原料的能力。结果表明:CA-1催化剂加氢脱氮性能和高氮原料适应能力明显优于参比剂。     

催化重整装置预加氢压降分析及对策

预加氢压降高,是几乎所有催化重整装置都要面对的生产瓶颈问题.作者着重统计了中国石油大庆炼化公司炼油一厂35万t/a催化重整装置2006年至2008年预加氢部分压降变化情况,分析了该重整装置预加氢压降分布情况和压降变化情况,提出了降低重整装置预加氢压降的具体措施,以及目前该重整装置预加氢压降状况.     

CH-18型重整预加氢催化剂的研究及工业试生产

新型CH-18(研制型号RS-1)型重整预加氢催化剂以γ-Al2O3为载体, 以钴钼钨为活性金属组份。工业试生产的CH-18性能已达到实验室水平, 在高空速(10h-1)下操作可获得合格的重整进料。CH-18达到同类催化剂产品的国际先进水平。     

催化重整集总动力学模型(Ⅰ)模型的建立

根据集总指导原则,从催化重整的反应机理出发,建立了十六集总催化重整动力学模型.该模型不仅简单可行,且能适用于不同生产方案的重整反应,具有较强的适用性和良好的拟合性.     

催化重整集总动力学模型(Ⅰ)模型的建立

根据集总指导原则,从催化重整的反应机理出发,建立了十六集总催化重整动力学模型.该模型不仅简单可行,且能适用于不同生产方案的重整反应,具有较强的适用性和良好的拟合性.     

CB-11／ＣＢ-8重整催化剂二段装填在工业装置上的应用

CB-11是由抚顺石化研究院研制的中铂含量催化剂,具有较低的Re/Pt比和较强的脱氢性,CB-8则具有较高的Re/Pt比和较好的选择性。CB-11/CB-8的两段装填工艺是一种较好的CB-5B/CB-8的替代工艺。本文通过CB-11/CB-8的两段装填在工业上的应用,并通过两次满负荷的标定,证明CB-11/CB-8组合工艺在工业装置上的应用取得成功。其产品辛烷值及液体收率均达到了设计要求,实践证明这种组合工艺具有较好的活性、选择性及再生性。     

Detailed description of kinetic and reactor modeling for naphtha catalytic reforming

Kinetic and reactor modeling of catalytic reforming of naphtha is described in the present work. The development of a kinetic reforming model is reported with detail. The validation of the developed kinetic model with bench-scale isothermal reactor experiments is also carried out. The kinetic and reactor models are applied for the simulation of commercial semi-regenerative reforming unit. The effect of benzene precursors in the feed in both laboratory and commercial reactors is also simulated, and the use of the reactor model to predict other process parameters is highlighted.     

天然气换热式转化造气新工艺

介绍中国成达化学工程公司开发的换热式转化造气新工艺的工艺流程 ,主要设备及其应用情况。该工艺为老厂节气、节能、挖潜改造或新建装置提供了一条新途径。     

换热式转化工艺

介绍了国外的KRES、LCA、CAR、TANDEN等换热式转化工艺和国内的换热式转化工艺,以及各种转化工艺的特点和转化炉结构。     

Fluidizable catalyst for methane reforming

Fluidizable catalysts are developed in this study for advancing an integral approach towards a new methane reforming process. With this end, catalysts constituted by nickel supported on -alumina, NaY, and USY were developed using the incipient wetness technique producing bulk nickel loadings in the 0–20 wt.% range. These catalysts were also tested under relevant conditions for industrial operation in a novel Riser Simulator. It was found that, for the case of ‘dry’ reforming of methane, nickel deposited in zeolites is a promising catalyst given that it allows for close control of metal dispersion–redispersion process. In fact, when this catalyst was exposed to repeated oxidation and reduction cycles, nickel dispersions remained stable at 25% for NaY zeolite and at 15% for USY zeolite. This catalyst offers, however, limited application for steam reforming of methane given the potential collapse of the zeolite structure under steam atmosphere. As an alternative and for cases where steam reforming of methane is preferred, nickel on -alumina catalyst was considered. In these cases, optimum catalytic activity was achieved with 2.5 wt.% of nickel on -alumina with 3–6% nickel dispersion.     

Simulation of dry reforming of methane in a conventional downfired reformer

A model for industrial top‐fired dry reforming of methane (DRM) and for combined dry reforming and steam reforming of methane was developed for the first time. The model calculates and gives predictions on the temperature profiles for fuel gas, tube walls, and process gas, as well as the process gas composition profiles over the length of the tubes. Radiative heat transfer is modeled by Hottel Zone method. Material and energy balances are solved numerically using Newton‐Raphson solver. Kinetic models for two different DRM catalysts are applied in the model for comparison. Simulation results show that water–gas shift reaction is important in DRM and addition of steam in the feed of process gas is beneficial for industrial production. © 2016 American Institute of Chemical Engineers AIChE J, 63: 2060–2071, 2017     

Improving the yield and quality of reformate via combined application of staged reforming and hydroisomerization

Three process flowsheets combining the processes of catalytic reforming, interstage separation, and reformate hydroisomerization are considered to improve the yield and quality of reformate (i.e., reduce the content of aromatics, including benzene). It is shown that the process flowsheet with the distillation of the intermediate reformate into three fractions (IBP-85°C, 85–150°C, and EBP-150°C) is the best one, since it allows the production of high-octane gasoline compounds with a reduced benzene content (less than 1 wt %) at an appreciable increase in the yield of reformate (up to 4–5 wt %) and its research octane number (RON) (up to 2), in comparison to traditional (fixed-bed) catalytic reforming. Effective catalysts are selected for the reforming and reformate hydroisomerization stages and are used to perform experimental modeling of the considered flowsheets for the combined reforming–hydroisomerization process. The results confirm analytical estimates for the effectiveness of the developed technology.     

拟薄水铝石新工艺研发及其在加氢精制催化剂中的应用

中海油天津化工研究设计院有限公司研究开发出拟薄水铝石生产新工艺,解决了常规方法生产成本高、产物结构不易控制的缺点。新工艺生产拟薄水铝石实现了稳定化、系列化生产,为加氢精制催化剂产品性能的稳定提供了可靠的保障。以新工艺生产的拟薄水铝石TCA-01为载体原料,成功开发出高性能的硫化型重整预加氢催化剂THFS-I,该催化剂具有优异的加氢脱硫、脱氮活性,加氢产品硫、氮质量分数均小于0.5 μg/g,满足重整进料的要求。采用TCA-01为载体原料,成功开发出高性能的柴油加氢精制催化剂THDS-I,该催化剂整体性能优于传统工艺生产的拟薄水铝石载体制得的催化剂的性能。