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1.
采用一种新的制备乙苯的烷基化反应工艺条件,在气-液-固三相的反应状态下考察反应温度、压力、苯/乙烯摩尔比和苯质量空速对以改性β沸石为主要活性组分的FX-02催化剂性能的影响。在初步试验的基础上,应用均匀设计方法找出FX-02催化剂上苯与乙烯烷基化反应的最适宜工艺条件,在FX-02催化剂上,当反应温度为150~175℃,反应压力为0.8~1.2MPa,苯的质量空速为4h-1,苯与乙烯摩尔比为6~8时,苯与乙烯可顺利地进行烷基化反应,乙烯的转化率达到100%,乙苯的选择性超过95%。  相似文献   

2.
溶胶—凝胶法制备NiO/γ—Al2O3催化剂热稳定性的考察   总被引:1,自引:0,他引:1  
以工业产品PURALSB粉为原料利用溶胶-凝胶法制备了γ-Al2O3载体及NiO/γ-Al2O3催化剂,应用低温氮吸附、XRD、TPR等物理化学方法对不同温度焙烧及高温下焙烧不同时间的载体及催化剂进行了结构和物化性能的表征。并与常规载体及常规浸渍法制备的催化剂比较,发现溶胶-凝胶法制备的载体和催化剂具有良好的晶相稳定性和热稳定性,并且应用于甲烷部分氧化制合成气的高温反应,在反应温度850℃,反应空速2.7×105h-1的条件下反应80h,仍保持良好的稳定性,CH4的转化率和CO的选择性分别在92%和97%以上。  相似文献   

3.
无污染性防老剂LY—40的研制   总被引:1,自引:0,他引:1  
研究了以活性白土为催化剂,二苯胺与α-甲基苯乙烯进行烷基化反应,再与轻质碳酸钙掺混制备防老剂的方法,确定了烷基反应的最佳条件。开发的防老剂LY-40无污染,综合性能优异。  相似文献   

4.
PW12/USY—1固载杂多酸催化合成双酚A的研究   总被引:1,自引:0,他引:1  
以PW12/USY-1固载杂多酸为催化剂,苯酚和丙酮为原料,催化缩合双酚A,通过对催化剂帛备的正交试验,优选了催化剂的制备条件:H3PW12O40与USY-1质量比为1:1,H3PW12O40浓度为25%,480℃焙烧4h制备的催化剂活必同,通过对缩合反应的正交试验,优化双酚A合成反应条件:苯酚与丙酮摩尔比为8:1。催化剂用量为反应物总质量的9%,反应温度为120℃,反应时间为3h,其产率可达62  相似文献   

5.
CuO/ZnO/活性Al2O3催化剂合成N-异丙基苯胺催化性能的考察   总被引:4,自引:1,他引:3  
采用浸渍法制备CuO/ZnO/活性Al2O3催化剂,用于合成N-异丙基苯胺的N-烷基化反应。并且考察了催化剂的制备因素及反应条件对催化剂反应性能的影响。得到了CuO/ZnO/活性Al2O3催化剂制备N-异丙基苯胺的适宜反应条件。  相似文献   

6.
α-甲基苯乙烯(α-MS)是化工厂用异丙苯生产苯酚、丙酮的副产物。本文对α-MS加氢生成异丙苯催化剂制备方法进行研究,并考察了工艺条件对其反应活性、选择性的影响。结果表明Pt,Pt-Ni/Al2O3(改性)催化剂在反应温度为60~65℃、空速为1~2h(-1)、氢油比为250~6000(v)时,具有较好催化性能;活性达98%、选择性达100%,并具有一定的抗工艺条件干扰性能。  相似文献   

7.
在丙烯和双氧水的环氧化反应中, 用气固相同晶取代法制备的Ti-ZSM-5分子筛为催化剂,考察了不同操作条件,溶剂及添加剂行对反应的影响。研究表明,双氧水转化率随反应温度的提高,其本身与催化剂用量的增加及反应时间的延长而提高;其有效腥率和主产物环氧丙烷的选择性随反应温度的提高与时间的延而下降。  相似文献   

8.
合成气直接制取二甲醚催化剂的制备因素及其应用   总被引:5,自引:2,他引:3  
研究了CuO/ZnO/Al2O3和CuO-ZnO-Al2O3/HZSM-5催化剂的制备方法及合成反应条件对合成气直接制取二甲醚反应的影响。结果表明,采用共沉淀沉积法制备催化剂,350°C下焙烧,230~240°C下还原CuO/ZnO/Al2O3催化剂的活性最高。CuO-ZnO-Al2O3/HZSM-5催化剂上合成反应的适宜条件:温度270~300°C,压力4.0MPa,空速1500h-1,H2CO=2~2.8(mol比),原料气中CO2的浓度为5%(v)。  相似文献   

9.
以对甲苯酚和异丁烯为原料合成2-叔丁基对甲苯酚。对催化剂进行了筛选,讨论了催化剂用量、原料配比、反应温度、反应时间对烷基化反应的影响。确定了合成2-叔丁基对甲苯酚的最佳条件:催化剂用量(以对甲苯酚质量计)12%,异丁烯加入时间2h,补充反应时间1h,反应温度100-110℃,对甲苯酚与异丁烯的摩尔比为1.1:1。在此条件下产品收率为79.1%。  相似文献   

10.
甲烷氧化偶联制乙烯高选择性催化剂的研究   总被引:1,自引:0,他引:1  
制备了甲烷氧化偶联制乙烯高选择性催化剂,考察了MgO-BaO、SrCO3-BaO、La2O3-BaO体系催化剂的活性和选择性及CH4/O2、反应温度和空速对催化剂性能的影响。实验表明在反应条件为:CH4/O2=7.8~8.0、反应温度800~820℃、CH4空速为500~1000h^-1的范围内,La2O3~BaO体系催化剂的CH4转化率在18%~20%,C2的选择性能保持在80%以上,用XRD、  相似文献   

11.
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。  相似文献   

12.
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。  相似文献   

13.
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.  相似文献   

14.
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."  相似文献   

15.
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  相似文献   

16.
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.  相似文献   

17.
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,  相似文献   

18.
《中国油气》2014,(3):60-65
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.  相似文献   

19.
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).  相似文献   

20.
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.  相似文献   

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