FDFCC-Ⅲ 工艺副提升管回炼催化裂化柴油总结

中国石油化工股份有限公司洛阳分公司对2号催化裂化(催化)装置FDFCC-Ⅲ灵活多效催化裂化工艺进行改造,副提升管由回炼粗汽油改为回炼加氢催化柴油。通过改造将低品质的催化柴油转化为高辛烷值汽油,有效地降低了柴汽比。标定期间,副提升管的产品分布达到了设计值,汽油收率50.66%,液化石油气收率12.27%,装置能耗为1 994.7 MJ/t。副粗汽油硫、烯烃含量低,辛烷值高,蒸气压较高。改造达到了预期效果。改造后回炼自产柴油时产品分布较差,生产中应避免自产柴油加氢后回炼。     

锦西石化分公司催化裂化装置两段提升管改造成功

由中国石油天然气华东勘察设计研究院主持设计的目前国内最大的锦西石化分公司催化裂化装置两段提升管改造项目近日完成。经过一段时间的测试 ,目前该装置运行平稳 ,装置处理能力达到了设计值。两段提升管工艺技术是国家级“十五”火炬计划项目 ,由石油大学和华东勘察设计研究院共同研究开发 ,属世界首创。采用该技术可以大幅度降低干气产率 ,提高柴汽比和轻质油收率 ,大大降低催化裂化汽油的烯烃含量 ,同时又可以提高柴油的十六烷值 ,提高催化裂化汽油和柴油的产品质量。锦西石化分公司的两套催化裂化装置建于 1986年 ,由于设备老化等问题…     

重油催化裂化装置提升管沿程产物分布的研究

利用专门开发的工业提升管在线取样系统对青岛石油化工厂重油催化裂化装置提升管进行了在线取样，通过对不同位置所得样品的分析，研究了工业重油催化裂化装置提升管沿程产物分布和组成变化。产物收率在反应初期变化很快，而在后期变化很小；汽油收率在提升管中部以后变化很小，选择性在提升管中部达到最高值，然后降低；柴油收率和选择性在反应初期出现最高点。汽油烯烃含量开始时随反应进行逐渐增加，在提升管前部达到最高点后逐渐下降；汽油硫含量沿提升管高度增加而逐渐降低。     

两段提升管催化裂化工艺研发成功

石油大学 (华东 )研究开发成功两段提升管催化裂化新工艺技术。加工能力 10× 10 4 t/a催化装置工业试验显示 ,该项工艺技术可使装置处理能力提高 30 %～ 4 0 % ,轻油收率提高 3个百分点以上 ,液体产品收率提高 2～ 3个百分点 ,干气和焦炭产率明显降低 ,汽油烯烃含量降低 2 0个百分点 ,催化柴油密度下降 ,十六烷值提高。据称 ,这是继分子筛催化剂和提升管催化裂化工艺技术出现以来的又一次催化裂化技术的重大创新。该新技术的突出效果是 ,可改善产品结构 ,大幅度提高原料的转化深度 ,显著提高轻质油品收率 ,提高催化汽油质量 ,改善柴油质量 …     

提高汽、柴油收率的两段提升管催化裂化动力学模型研究及应用

 建立了提高汽、柴油收率的两段提升管催化裂化六集总动力学模型，根据小型提升管催化裂化装置的实验数据求取了动力学参数，并用Runge-Kuta方法对模型进行了求解。模型对两段提升管催化裂化技术进行计算的结果表明，一段的反应深度影响产品的产率和选择性，两段技术可以提高汽、柴油的产率，选择性和柴/汽比，降低干气和焦炭产率。与单段提升管催化裂化技术相比，当转化率为80%时，两段技术汽、柴油产率提高6.65%，选择性提高8.31%，柴/汽比由单段的0.71提高到1.07；当转化率为90%时，两段技术汽、柴油产率提高20.8%，选择性提高23.19%，柴/汽比提高到0.89。采用两段提升管技术，以汽、柴油作为目的产物时，汽、柴油的最大产率比单段提升管技术提高11.65%，选择性提高2.09%；以汽、柴油+液化气为目的产物时，汽、柴油+液化气的最大产率提高8.69%，汽、柴油的选择性提高16.87%，液化气的选择性则下降13.62%。     

催化裂化工艺技术重大突破

目前 ,两段提升管催化裂化新工艺技术在石油大学 (华东 )研究开发成功。年加工能力 10万吨催化装置工业试验显示 ,该项工艺技术可使装置处理能力提高 3 0 %至 40 % ,轻油收率提高 3个百分点以上 ,液体产品收率提高 2至 3个百分点 ,干气和焦炭产率明显降低 ,汽油烯烃含量降低 2 0个百分点 ,催化柴油密度下降 ,十六烷值提高。据了解 ,两段提升管催化裂化工艺技术是中油股份公司“十五”重大炼油技术攻关项目 ,经过石油大学 (华东 )张建芳教授等研究人员 8年的艰苦努力 ,终于研究开发成功。有专家称 ,这是继分子筛催化剂和提升管催化裂化工艺技…     

两段提升管催化裂化生产丙烯工艺

采用小型提升管实验装置模拟两段提升管催化裂化(TSRFCC)工艺,在反应条件、操作方式和氢分配方面进行了研究。实验结果表明,停留时间对丙烯收率的影响最明显,提高剂油比是增产丙烯经济效益最好的措施。以大庆掺渣蜡油为原料,采用LCC-200型催化剂,二段提升管回炼一段“汽油+油浆”时,液化气和丙烯总收率分别为36.52%和16.30%,汽油和柴油总收率分别为26.11%和19.10%,表明TSRFCC工艺配合多产丙烯催化剂,可在生产丙烯的同时兼顾轻油收率和品质。第二段提升管回炼一段柴油不能显著提高丙烯收率,还会降低柴油总收率和品质。第一段提升管提供约70%的丙烯和第二段提升管的原料,因此TSRFCC工艺一段提升管需保持合适的转化深度。TSRFCC工艺的氢利用率可达89.82%,氢分配比较合理。     

催化柴油回炼多产汽油工艺研究

为了满足国内炼油企业多产优质汽油、压减劣质柴油的需求,开发了催化柴油和加氢催化柴油进FDFCC-Ⅲ装置第二提升管多产汽油工艺技术。对催化裂化装置自身回炼平衡柴油、另一套装置柴油及加氢催化柴油的裂化性能进行了系统的研究。结果表明,在反应温度530℃条件下,第二提升管回炼加氢催化柴油,柴油转化率为65.45%,汽油产率可达51.5%,生成汽油RON为99.9。     

催化裂化装置掺炼直馏柴油效果分析

针对催化裂化装置掺炼直馏柴油进行了分析。某石化公司在降低柴汽比过程中,2套催化裂化装置掺炼了常减压装置10%的直馏重柴油,在确保质量合格及操作参数没有大幅度变化的情况下,2套催化装置汽油收率提高了0.5%～3%,液化气收率提高了0.3%～1%,柴油收率降低了0.5%～2.5%,明显降低了柴汽比,为后续装置进行直馏柴油掺炼累部分操作经验,同时为全厂降低柴汽比积累了数据。     

哈国蜡油催化裂化试验评价研究

采用中国石油独山子石化分公司催化裂化装置的哈国蜡油原料和平衡催化剂,在实验室提升管试验装置上开展试验,考察反应温度、剂油比、反应时间对产品分布的影响,根据汽、柴油收率情况,确定汽油生产方案的条件为:反应温度470℃;剂油比7,并进行了优化试验。提升管试验结果与工业装置相比,液化石油气收率高10.22百分点,汽油收率低6.47百分点,干气收率比工业装置低不到2百分点,柴油、重油、焦炭收率及转化率提升管试验结果与工业装置相差小于1百分点。     

阿姆河右岸酸性气田井口冲蚀及对策

中亚土库曼斯坦阿姆河右岸气田群为高含H_2S和CO_2的碳酸盐岩气藏,单井产量高,井口设备均出现了不同程度的腐蚀。初步分析认为其原因是生产过程中仅考虑酸性介质对气井井口的化学腐蚀,而没有考虑气体流速对井口的冲蚀作用,极大地影响了气田的安全生产。为此,通过对节流阀上下游阀道、法兰面均出现明显坑状腐蚀的进一步分析,明确了化学腐蚀和气体冲蚀的交互作用是井口磨损的主要影响因素,气流冲刷腐蚀坑的化学腐蚀产物会加速冲蚀损害;进而借鉴冲蚀与腐蚀运行环境下的多相管流管道的磨损计算理论,计算了该运行环境下的冲蚀极限速度,得到了不同生产工况下节流阀的抗冲蚀流量;最后,根据气田生产情况,针对性地提出了按气井配产要求来选择采气树类型、节流阀通径及类型冲蚀的技术控制策略。此举为气田安全生产提供了工程技术保障。     

山前地区深井超深井套管防磨与减磨技术研究

针对山前地区深井超深井钻井过程中套管磨损严重的问题,在分析套管磨损机理的基础上,开展了山前地区套管防磨与减磨技术研究,基于技术研究成果及应用实践,得到如下结论:1应用Power V等垂直钻井系统控制井眼轨迹,特别是上部井段的狗腿度和井斜,可明显减小侧向力和磨损量,缩短套管磨损时间;2应综合考虑套管磨损率、磨损系数以及钻杆耐磨带本身的磨损量,优选出效果最优的耐磨带;在狗腿度严重的位置,可考虑采用一定数量的橡胶钻杆卡箍来减轻对套管的磨损;3山前地区钻井液采用CX-300减磨剂能够显著降低磨损速率,减轻套管磨损程度,但在不同钻井液体系使用之前应进行优化分析以确定最佳使用量;4在迪那204井使用高密度钻井液体系,全部采用优选的高密度重晶石粉代替铁矿粉作为加重剂,整个钻进过程中未出现钻具及套管磨损,迪那204井易损件消耗量仅为邻井迪那203井的左右,防磨减磨效果非常显著。     

Biodiesel Projects Helpful to Ease Energy Shortage

Nearly 7,000 hectares of biodiesel forest will take shape in the northern province of Hebei in 2008, part of a national campaign to fuel the fast growing economy in a green way. In no more than five years, the Pistacia chinensis Bunge, whose seeds have an oil content of up to 40 percent, will yield five tons of fruit and contribute about two tons of high-quality biological diesel oil, according to the provincial forestry administration.     

State Energy Base Proposed in Inner Mongolia

Experts recently suggested China set up a state energy base in lnner Mongolia Autonomous Region to ease its energy thirst. The survey was co-conducted by senior researchers from the National Development and Reform Commission, Development Research Center of the State Council, Chinese Academy of Sciences and the Ministry of Finance. To plan and establish strategic energy bases at state level is in line with the principle of ＂giving priority to energy saving and diversifying energy consumption with the utility of coal at the core.＂     

Influence of Shale Oil Boom in North America upon nternational Crude Price Flucturation

正Current stituation of shale oil development in the world The US The country is blessed with abundant shale oil resources and had matersed whole sets of theories and technologies needed for their exploration and development after years of practices.According to an assessment of shale oil resources in major countries and regions of the world issued by the U.S.Energy Information Agency(EIA),the US ranks the second in the world with its 6.8 billion tons of technically recoverable shale oil(shale oil in place is about 136.3 tons).About 8plays had been confirmed to have     

A Sintering-resistant Pd/C Composite Catalyst for Ethylbenzene DehydrogenationDeveloped by CAS Institute of Metals

Carbon deposition is a commonplace phenomenon occurringin the catalytic reaction process, in particular inthe system of direct dehydrogenation of ethylbenzene,because the reactant - ethylbenzene molecules on thesurface of metal oxide catalysts are prone to quickly formcarbon deposits, leading to deactivation of catalysts. Recently,the associate research fellow Mr. Liu Hongyangand the research fellow Mr. Su Dangsheng of the StateShenyang Material Science （United ） Laboratory of theInstitute of Metal Research, CAS by taking advantageof the carbon deposition process during direct dehydrogenationof ethylbenzene have ingeniously designeda Pd/C composite catalyst. This catalyst in comparisonwith the traditional commercial carbon nanotubesupported Pd catalyst shows a significantly improved performancein terms of its catalytic activity and sinteringresistantability.     

ZPEB Overseas Markets Keep Steady and Efficient Development

In recent years, Zhongyuan Petroleum Exploration Bureau （ZPEB） has made rapid development in overseas petroleum markets through its integrated reorganization. A new international business plattbrm established, aimed at becoming a highly ranked contractor with international petroleum engineering technology. ZPEB has expanded its business scope and scale, regulated the market structure,     

New Era for China-Brazil Relations

China and Brazil celebrated the 40th anniversary of establishing diplomatic relations between the two countries in July this year. Bilateral relations between China and Brazil have entered a new stage, and experts expect the already extensive cooperation between the two countries to deepen and broaden as Chinese President Xi Jinping made a state visit to Brazil in mid-July, which is his first state visit to Brazil since he assumed the office last year. The visit to China＇s largest trade partner in Latin America is at the invitation of Brazilian President Dilma Rousseff.     

Large Scale Ethylene Production Package Technology SuccessfullyDeveloped by CNPC

The CNPC Group has successfully developed a largescaleethylene production package technology with independentintellectual property rights, which has beensuccessfully applied in the 1.2 Mt/a ethylene revamp andexpansion project at the Daqing Petrochemical Complex（DPC）.     

Recent Advancements in Petroleum E & P Equipments in China

The role of equipments in oil and gas exploration and development had never been attached with so much importance as that in shale oil and gas boom in the U.S. With the help of massive hydraulic fracturing and horizontal drilling techniques, the U.S., the world＇s No. 1 oil importer even started to dream about energy self-sufficiency with its proudly high production of shale oil and gas from several major shale plays in the country. However, what behind this remarkable achievement are powerful multi-stage hydraulic fracturing machinery and smart tools for directional drilling.