Commercial Test of Multi-functional Desulfurizing Agent TS-01 for Gasoline in FCC Process

Experimental use of multi-functional desulfurizing agent TS-01 for FCC gasoline in the FCC unit of SINOPEC Jiujiang Company shows that the multi-functional desulfurizing agent can effectively remove various kinds of sulfur in FCC gasoline and diesel fuel and fulfill passivation on heavy metals.     

气相高硅Y型分子筛催化剂在重油催化裂化装置上的工业应用试验

锦西石化分公司重油催化裂化装置采用了北京石科院研制、兰州石化分公司催化剂厂生产的气相高硅Y型分子筛催化剂LHA-28，工业应用结果表明，LHA-28催化剂提高了重油转化能力，液体收率高于对比剂，汽油的辛烷值、柴油的十六烷值与对比剂相比基本相当，是一种性能优良的催化剂。     

A Kinetic Model for Flexible Dual-riser Fluid Catalytic Cracking Process

According to the mechanism of catalytic cracking reactions, the characteristics of flexible dual-riser fluid catalytic cracking (FDFCC) process, a 10-lumped kinetic model for heavy oil riser reactor and a seven-lumped kinetic model for gasoline riser reactor were developed in the article to simulate the FDFCC process. Based on the data from a commercial FDFCC unit, 43 kinetic parameters for the ten-lumped kinetic model and 18 kinetic parameters for the seven-lumped kinetic model were calculated by the stepwise method. The validity check of the model show that the calculated values of the models are close to the commercial data. In general, the two models could not only describe reaction rules of the FDFCC process correctly but also give good prediction for the distribution and composition of main products, especially for gasoline and propylene.     

制取低碳烯烃的催化裂解催化剂及其工业应用

催化裂解技术以重油为原料，使用固体酸择形分子筛催化剂，直接生产低碳烯烃，特别是丙烯的新催化转化方法。该方法现已工业化，以大庆减压馏份油掺渣油为原料，在最大量生产丙烯操作条件下，丙烯的收率为２２．９１％。该文主要介绍ＣＨＰ－１、ＣＲＰ－１和ＣＩＰ－１３种催化裂解催化剂的特性、物化性质、原料适应性、催化裂解工艺过程、反应机理及催化裂解催化剂的工业应用情况。     

RIPP-1402阻聚剂工业试验及应用

在齐鲁石化３０万吨乙烯工业装置脱丙烷塔上进行了ＲＩＰＰ－１４０２阻聚剂的工业试验，连续运行１２５天。从再沸器运转周期、蒸汽阀开度、蒸汽消耗量、脱丙烷塔各项主要操作参数和再沸器及脱丙烷塔的结垢量等主要技术指标考察，表明ＲＩＰＰ－１４０２阻聚剂性能全面达到和超过进口同类产品。在工业装置上两年的应用结果进一步证明了工业试验的结论。     

Development and Commercial Application of a Novel Catalyst DVR—1 for Catalytic Cracking of Daqing Vacuum Residue

A newly developed catalyst type DVR-1 for catalytic cracking of Daqing vacuum resid was put into use in a commercial VRFCC unit,This catalyst features uniquely active matrix and modified ultra-stable zeolite.The commercial application results show that the DVR-1 type catalyst has the advantage of high heavy oil conversion,good metal tolerance nd gooed stability for catalyst regeneration,The FCC tests have shown Favorable product distribution,acceptable product quality and enormaous economic benefits whe processing the feedstock containin 75%-100% Daqing VR.     

胜利原油催化裂化掺炼减压渣油工业试验

通过胜利管道原油催化裂化掺炼减压渣油工业试验 ,发现掺炼胜利减压渣油生焦率较高 ,轻油收率偏低 ,柴油质量较差 ,汽油经过精制可以达到国家标准。     

催化裂化RCA助剂的工业应用

介绍了中国石化股份有限公司天津分公司催化裂化装置应用RCA助剂的使用情况.工业应用表明,使用RCA助剂,可以有效地改善催化裂化的产品分布,轻油产率明显增加、油浆产率降低,RCA助剂适合催化裂化装置使用.     

液化气硫醇无碱转化组合工艺的开发及工业侧线试验

为了脱除液化气中的硫化合物,开发了一种液化气硫醇无碱转化组合工艺。该工艺的流程为：采用三段固定床串联,将醇胺法脱H2S后的液化气先通过COS水解剂固定床,将COS水解生成H2S;再经过精脱硫剂固定床,脱除COS水解生成的H2S和醇胺法未脱尽的H2S;最后通过硫醇转化催化剂JX-2A^＋固定床,同时向硫醇转化催化剂固定床注入转化助剂,将硫醇转化成二硫化物;蒸馏法脱除液化气中二硫化物。该组合工艺可使COS脱除率大于95％、产物中H2S含量小于1mg／m^3和硫醇转化率大于95％。工业侧线试验结果表明,该组合工艺在液相及常温条件下可有效脱除液化气中的H2S、COS和高含量硫醇等硫化合物。该工艺具有高效、无碱液排放、流程简单和无环境污染的优势。     

Cold Model Study and Commercial Test on Novel Vapor-Liquid Distributor of Hydroprocessing Reactor

A novel vapor-liquid distributor was developed on the basis of sufficient study on the existing distributors applied in hydroprocessing reactors. The cold model test data showed that the fluid distribution performance of the novel vapor-liquid distributor was evidently better than the traditional one. Com- mercial tests of the new distributor were carded out in the 300 kt/a gas oil hydrotreating reactor at SINOPEC Changling Branch Company, showing that the new vapor-liquid distributor could improve the fluid distribution, promote the hydrotreating efficiency and lead to better performance than the traditional one.     

新型重油催化裂化催化剂HSC的工业应用

介绍了新型重油催化裂化催化剂HSC在A炼厂140万吨/年重油催化装置上的工业标定试验及工业应用情况。工业标定试验结果表明: 与基础剂相比,干气产率和油浆产率下降, 总液收增加了1.34个百分点,汽油产率增加了5.05个百分点,液化气产率增加了1.43个百分点。产品性质没有明显变化,催化剂抗磨损强度较高。通过中间标定、总结标定及后续的长期工业应用日常统计数据结果表明催化剂HSC具有较强的重油转化能力、较高的汽油产率、较好的产物分布和产品选择性。     

催化裂化多产丙烯工艺

综述了国内外催化裂化多产丙烯工艺的特点、产品分布、催化剂及工业应用情况。详细介绍了中国石油化工股份有限公司石油化工科学研究院开发的多产液化气和柴油的工艺、多产低碳烯烃的重油深度催化裂化工艺、重油直接制取乙烯和丙烯的催化热裂解工艺及西安交通大学、中国石化集团洛阳石油化工工程公司等单位联合开发的灵活多效双提升管催化裂化工艺。     

Conversion of Benzene in the Catalytic Cracking Process

The catalytic cracking of 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, and five olefins mixed with benzene, over USY catalysts was conducted in a small fixed fluidized bed reactor to study the conversion of benzene under catalytic cracking conditions. Benzene mainly alkylated with C2-C5 light olefins, generating monosubstituted alkylbenzenes,and the concentration of light olefins dramatically affected the alkylbenzene yield. Due to the limitation of thermodynamic equilibrium, the yield of ...     

重油催化裂解制取丙烯的分子反应化学

从分子水平研究了重油催化裂解反应中原料性质的影响、丙烯生成反应化学和丙烯再转化反应化学,创新了重油催化裂解反应理论和知识。在重油催化裂解制丙烯反应中,原料氢含量和饱和烃含量是影响丙烯产率的重要指标,而原料烃分子结构与大小对丙烯产率的影响也很大;丙烯的生成来自重质原料一次裂解和中间产物馏分二次裂解反应的共同贡献;烷烃分子经五配位正碳离子引发链反应是导致干气选择性高而丙烯选择性低的主要原因;催化裂解产物中丙烯存在再转化反应。同时提出了催化裂解增产丙烯并抑制干气和焦炭生成的新技术,并在工业装置上得到了验证;与原技术相比,在相同原料油和操作条件下,其丙烯产率提高了90.29%,而焦炭产率降低了17.53%,干气与丙烯质量产率比降低了34.88%。     

Additional Feedstock for Fluid Catalytic Cracking Unit

Fuel refineries are configured with Fluid Catalytic Cracking Unit (FCCU) to convert Vacuum Gas Oils (VGO) into higher value gasoline and middle distillates. But such refineries also generate 8-12% of heavy oils known either as decant oil or clarified oil (CLO), which has to be downgraded as furnace oil. The recycling of the decant oil into FCCU along with VGO feed is restricted to maintain the coke formation within design limits so that there is no decrease either in conversion or yield of liquid products from FCC operations. The condensed aromatic ring compounds present in CLO makes it undesirable feedstock for cracking, as it promotes heavy coke formation on the catalyst. Hence, CLO is disposed by absorbing in the residual fuel oils.

Of late, FCC units are being operated with higher severity to maximize gasoline, and this has resulted in much higher concentration of condensed aromatics in CLO. Hence, better utilization of CLO depends on separating its saturated hydrocarbon components as a good feedstock for recycling into FCCU with the simultaneous production of extract with enriched poly condensed aromatics as a value added product, namely Carbon Black Feed Stock (CBFS). This article describes several extraction studies carried out on CLO to obtain raffinate for which cracking studies were carried out in automated Micro Activity Test (MAT) unit. The quality of extract phase from each of the above studies was evaluated for its suitability as feedstock for carbon black.     

Additional Feedstock for Fluid Catalytic Cracking Unit

Abstract

Fuel refineries are configured with Fluid Catalytic Cracking Unit (FCCU) to convert Vacuum Gas Oils (VGO) into higher value gasoline and middle distillates. But such refineries also generate 8–12% of heavy oils known either as decant oil or clarified oil (CLO), which has to be downgraded as furnace oil. The recycling of the decant oil into FCCU along with VGO feed is restricted to maintain the coke formation within design limits so that there is no decrease either in conversion or yield of liquid products from FCC operations. The condensed aromatic ring compounds present in CLO makes it undesirable feedstock for cracking, as it promotes heavy coke formation on the catalyst. Hence, CLO is disposed by absorbing in the residual fuel oils.

Of late, FCC units are being operated with higher severity to maximize gasoline, and this has resulted in much higher concentration of condensed aromatics in CLO. Hence, better utilization of CLO depends on separating its saturated hydrocarbon components as a good feedstock for recycling into FCCU with the simultaneous production of extract with enriched poly condensed aromatics as a value added product, namely Carbon Black Feed Stock (CBFS). This article describes several extraction studies carried out on CLO to obtain raffinate for which cracking studies were carried out in automated Micro Activity Test (MAT) unit. The quality of extract phase from each of the above studies was evaluated for its suitability as feedstock for carbon black.     

重油催化裂化汽提过程的数值模拟

采用计算流体力学方法,建立了汽提段内待生剂吸附烃类物质的脱附和反应模型,耦合流动和传递模型,建立汽提过程流动-传递-反应的综合模型。采用该模型对一套工业重油催化裂化(RFCC)汽提段内的流动和反应状况进行了模拟计算,考察了待生剂上烃类物质的汽提反应过程,分析了化学反应对气固两相分布、气固速度分布、组分浓度分布和汽提效率等的影响,揭示了实际RFCC汽提过程中气固两相中各组分浓度的变化规律,并与文献值进行了对比。模拟结果表明,待生剂经汽提后约有3.86%(w)的烃类物质被汽提回收,汽提后仍有0.11%(w)的重油吸附在待生剂上进入再生器;进入沉降器的油气中仍含有35%(w)的重油,如何使催化剂上和气相中的重油组分充分反应是RFCC汽提过程优化的关键。     

催化裂化油气分离过程的模拟计算

催化裂化反应油气分离过程处理的物料是由永久气体、超临气体、水蒸气、液化气和汽油组成的复杂混合物,工艺计算较为困难。本文对该混合物采用拟多组元法处理,提出由汽油恩氏蒸馏数据计算油气分离过程汽液平衡的完整方法。     

Commercial Test on Technology for High-Temperature Cracking of C5 Fraction to Decrease Olefin Content of Gasoline in DCCU

During June and July 2003,Jingmen Petrochemical Company carried out the commercial test on technology for high-temperature cracking of C5 fraction to decrease olefin content of gasoline in DCCU.The test results showed that the olefin content of DCC gasoline had decreased from 68.32m% to 42.5m%。meanwhile the propylene yield increased by 0.90m%.     

YXN—9601高效锑锡复合金属钝化剂的工业应用

随着催化裂化技术的发展，人们不断意识到开发重质资源降低原料成本的重要性、但重质原料中的重金属含量制约了这一资源的一切利用。本对装置使用ＹＸＮ－９６０１主铲锑锡复合金属钝化剂的情况进行了分析、总结、为装置今后选用金属钝化剂提供参考。