检索结果-南通市图书馆

LTAG-Ⅱ技术中LCO选择性加氢工艺过程

在线全文

学校读者我要写书评

暂无评论

石油学报（石油加工） 2024年第5期40卷 1313-1320页

作者：鞠雪艳习远兵王哲唐津莲龚剑洪中石化石油化工科学研究院有限公司北京100083

为了降低催化加氢工艺过程氢耗并提高技术经济性,根据催化裂化柴油(LCO)中不同类型芳烃的分布规律特点,在对LCO原料进行轻、重馏分切割分馏基础上,在加氢单元中进行LCO重馏分的选择性定向加氢饱和,然后将LCO轻馏分及LCO加氢重馏分在催... 详细信息

为了降低催化加氢工艺过程氢耗并提高技术经济性,根据催化裂化柴油(LCO)中不同类型芳烃的分布规律特点,在对LCO原料进行轻、重馏分切割分馏基础上,在加氢单元中进行LCO重馏分的选择性定向加氢饱和,然后将LCO轻馏分及LCO加氢重馏分在催化裂化装置进行分区进料,开发了在有效降低氢耗前提下的LCO高效转化为高辛烷值汽油或轻质芳烃的提质增效技术(LTAG-Ⅱ技术)。通过探索不同分馏温度下LCO轻、重馏分的性质特点以及芳烃分布规律,明确苊类、芴类及其衍生物是影响LCO重馏分选择性加氢反应性能的重要因素,确定较适宜的LCO原料分馏温度为240℃;在分馏温度240℃下,相比加氢处理-催化裂化生产高辛烷值汽油组分的单/双向组合技术(LTAG-Ⅰ技术),LTAG-Ⅱ技术在选择性加氢过程中氢耗降低17.7%,LCO原料的归一化转化率可提高4.76百分点,同时汽油收率及选择性均有所提高,具有良好的技术经济性。

关键词：催化裂化柴油加氢过程多环芳烃加氢选择性分馏温度提质增效

在线全文

学校读者我要写书评

暂无评论

加氢改质页岩油催化裂化工艺研究

石油炼制与化工 2024年第7期55卷 8-14页

作者：唐津莲梁家林龚剑洪袁起民中石化石油化工科学研究院有限公司北京100083

为实现页岩油的高效利用,通过加氢改质脱除页岩油中含氮化合物等杂质,采用小型固定流化床(FFB)装置,分别使用富含Y分子筛的SCG催化剂与富含ZRP型分子筛的DCC催化剂,考察催化剂与反应苛刻度对加氢改质页岩油催化裂化的影响。结果表明:脱... 详细信息

为实现页岩油的高效利用,通过加氢改质脱除页岩油中含氮化合物等杂质,采用小型固定流化床(FFB)装置,分别使用富含Y分子筛的SCG催化剂与富含ZRP型分子筛的DCC催化剂,考察催化剂与反应苛刻度对加氢改质页岩油催化裂化的影响。结果表明:脱氮率高达99.74%的加氢改质页岩油催化裂化的转化率高达79%~85%,液体产品收率高达89%~94%;使用SCG催化剂时的汽油收率高,在反应温度为500℃、剂油质量比为6.0的条件下,收率高达51.77%,研究法辛烷值(RON)在90以上,且汽油收率随着转化率提高呈线性下降;使用DCC催化剂时的液化气(LPG)收率与三烯(乙烯+丙烯+丁烯)收率更高,在反应温度为560℃、剂油质量比为10.3的条件下二者分别高达41.62%和32.90%,且二者均随着转化率提高而大幅度增加。两种催化剂上汽油中烯烃含量均随着转化率提高而线性降低,RON线性提高。

关键词：页岩油加氢改质催化裂化催化剂汽油液化气

Influences of regeneration atmospheres on structural transformation and renderability of fluidized catalytic cracking catalyst

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2023年第11期63卷 71-80页

作者： Haigang Zhang Zhongjie Shen jianhong gong Haifeng Liu National Energy Coal Gasification Technology Research and Development Center and Shanghai Engineering Research Center of Coal Gasification East China University of Science and TechnologyShanghai 200237China Sinopec Research Institute of Petroleum Processing Beijing 100083China

The regeneration of fluidized catalytic cracking(FCC)catalysts is an essential process in petroleum *** current study focused the regeneration reaction characteristics of spent fluidized catalytic cracking catalyst(SFCC)at different atmospheres with influences on pore evolution and activity,for a potential way to reduce emission,produce moderate chemical product(CO),and maintain catalyst *** results show that regeneration in air indicates a satisfaction on removing coke on the catalyst surface while giving a poor effect on eliminating the coke inside *** is attributed that the combustion in air led to a higher temperature and further transformed kaolinite phase to silicaaluminum spinel crystals,which tended to collapse and block small pores or expand large pores,with similar results observed in pure O_(2)***,catalysts regenerated in O_(2)/CO_(2)diminished the combustion damage to the pore structure,of which the micro porosity after regeneration increased by 32.4% and the total acid volume rose to 27.1%.The regeneration in pure CO_(2)displayed low conversion rate due to the endothermic reaction and low *** coexistence of gasification and partial oxidation can promote regeneration and maintain the original structure and good ***,a mechanism of the regeneration reaction at different atmospheres was revealed.

关键词： Fluidized catalytic cracking Coke deposit Regeneration Pore structure Gasification and combustion

在线全文

学校读者我要写书评

暂无评论

窝儿七的化学成分研究

中草药 2024年第2期55卷 366-373页

作者：白红云赵晨孙彦君弓建红陈辉李孟冯卫生河南中医药大学呼吸疾病中医药防治省部共建协同创新中心河南郑州450046 河南中医药大学药学院河南郑州450046 河南省中药开发工程技术中心河南郑州450046

目的研究窝儿七(中华山荷叶Diphylleia sinensis干燥根茎)中的化学成分。方法运用硅胶、AB-8大孔吸附树脂、ODS、MCI和Sephadex LH-20等柱色谱和半制备高效液相色谱对其化学成分进行分离纯化,通过IR、UV、MS、NMR等波谱分析技术,结合... 详细信息

目的研究窝儿七(中华山荷叶Diphylleia sinensis干燥根茎)中的化学成分。方法运用硅胶、AB-8大孔吸附树脂、ODS、MCI和Sephadex LH-20等柱色谱和半制备高效液相色谱对其化学成分进行分离纯化,通过IR、UV、MS、NMR等波谱分析技术,结合理化性质分析,鉴定化合物结构。采用DPPH自由基清除实验,测试化合物1、4、10、11、20的抗氧化活性。结果从窝儿七95%乙醇和50%乙醇提取物中分离得到21个化合物,分别鉴定为[4,5-二羟基-2-(1-羟基乙基)苯基][(4-羟基)苯基]甲酮(1)、(+)-7′-甲氧基落叶松树脂醇(2)、7′R-羟基落叶松树脂醇(3)、3-甲氧基槲皮素(4)、二氢槲皮素(5)、二氢山柰酚(6)、山柰酚(7)、槲皮素(8)、podoverine B(9)、大黄酚-1-O-β-D-葡萄糖苷(10)、大黄酚-8-O-β-D-葡萄糖苷(11)、尿嘧啶(12)、胸腺嘧啶核苷(13)、uridine-5′α-hydroxypropanoate(14)、对甲氧基苯甲醛(15)、对羟基苯甲酸(16)、香草醛(17)、3,4-二羟基苯甲酸(18)、羟基酪醇(19)、3′,5′-二羟基苯基-4-羟基苯甲酸酯(20)、5-羟甲基糠醛(21)。结论化合物1为新化合物,命名为山荷叶甲酮。化合物20为新的天然产物,并首次对其氢谱和碳谱数据进行归属。化合物2、3、5、6、9~11、13、14、17和19~21为首次从山荷叶属植物中分离得到。首次从该属植物中发现了生物碱类和蒽醌类化合物的存在。DPPH自由基清除实验结果显示,化合物1对DPPH自由基具有较强的清除能力,半数抑制浓度(median inhibition concentration,IC50)值为8.52μmol/L,且强于阳性药水溶性维生素E(trolox,14.95μmol/L)。

关键词：中华山荷叶 DPPH自由基清除抗氧化山荷叶甲酮 3′,5′-二羟基苯基-4-羟基苯甲酸酯 (+)-7′-甲氧基落叶松树脂醇二氢槲皮素大黄酚-1-O-β-D-葡萄糖苷

Flexibility of MIP Technology

在线全文

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2015年第3期17卷 39-43页

作者： Tang Jinlian gong jianhong Xu Youhao SINOPEC Research Institute of Petroleum Processing

The flexibility of MIP technology to meet market demand is mainly introduced in this study. Their commercial application and technical principle are analyzed too. The MIP technology with wide feed adaptability can form a good combination with other technologies. The MIP technology has been applied extensively in China. Based on this platform, the CGP, MIP-LTG and MIP-DCR technologies have been developed, which can further improve the flexibility of MIP technology. Based on its novel reaction control technique with a sole sequential two-zone riser, the MIP users can easily switch to different operating modes between producing either more clean gasoline and propylene or diesel through changing the catalysts and varying the operating conditions. That offers MIP users with enough production flexibility and a rational production arrangement to meet the market demand. The MIP-DCR technology with less dry gas and coke yields can provide a more flexible operating mode since the catalysts to oil ratio has become an independent variable.

关键词： MIP technology feed adaptability good combination operation flexibility multiple operation modes reductionof dry gas and coke

Fluid Catalytic Cracking Technology for Maximum Gasoline Production

在线全文

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2021年第1期23卷 41-47页

作者： Yan Jiasong Yu Shanqing Long Jun gong jianhong Research Institute of Petroleum Processing SINOPECBeijing 100083

Increasing gasoline production in FCC unit can improve the utilization efficiency of petroleum resources and gain economic *** paper discusses the technical principles for increasing FCC gasoline yield from the aspects of feedstock properties,operating conditions,LCO(light cycle oil)recycling,catalyst selection and reactor type,and illustrates the industrial application examples for maximizing gasoline *** technical measures,such as optimizing the feedstock,properly increasing the catalyst activity and reaction temperature,recycling LCO or hydrotreated LCO,applying high gasoline yield catalyst,and adopting the two-zone riser reactor,are proposed to enhance the gasoline yield.

关键词： fluid catalytic cracking gasoline light cycle oil riser reactor

Synergetic Effect of Y Zeolite and ZSM-5 Zeolite Ratios on Cracking, Oligomerization and Hydrogen Transfer Reactions

在线全文

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2014年第3期16卷 1-9页

作者： gong jianhong Xu Youhao Long Jun Wei Xiaoli SINOPEC Research Institute of Petroleum Processing

The objective of this study is to explore the optimum composition of Y and ZSM-5 zeolites to develop novel catalysts for obtaining lower gasoline olefins content and higher propylene yield. Five composite zeolite catalysts with varying Y zeolite/ZSM-5 zeolite ratios have been prepared in this work to investigate the synergy between the Y zeolite and ZSM-5 zeolite on the selectivity to protolytic cracking, β-scission, oligomerization, and hydrogen transfer reactions using a FCC naphtha feedstock at 480 ℃ in a confined fluidized bed reactor. Experimental results showed that the composite catalyst with a Y zeolite/ZSM-5 zeolite ratio of 1:4 had the highest protolytic cracking and β-scission ability, which was even higher than that of pure ZSM-5 catalyst. On the other hand, the catalyst with a Y zeolite/ZSM-5 zeolite ratio of 3:2 exhibited the strongest hydrogen transfer functionality while the pure Y zeolite based catalyst had the highest oligomerization ability. For all the catalysts tested, increasing conversion enhanced the selectivity to protolytic cracking and hydrogen transfer reactions but reduced the selectivity to β-scission reaction. However, no clear trend was identified for the selectivity to oligomerization when an increased conversion was experienced.

关键词： composite zeolites protolytic cracking β-scission oligomerization hydrogen transfer

赖氨酸特异性去甲基化酶1(LSD1)抑制剂的研究进展

在线全文

学校读者我要写书评

暂无评论

中国药科大学学报 2024年第5期55卷 685-696页

作者：张晓梦付金洋何雅楠弓建红杜锟吴亚支燕乐河南中医药大学药学院郑州450000

赖氨酸特异性去甲基化酶1(LSD1)是一种黄素腺嘌呤二核苷酸(FAD)依赖的单胺氧化酶。研究证实,LSD1的异常表达与肿瘤的转移和增殖密切相关,是目前肿瘤靶向治疗的重要靶点之一。另外,LSD1还参与神经退行性疾病、心血管疾病、炎症反应等多... 详细信息

赖氨酸特异性去甲基化酶1(LSD1)是一种黄素腺嘌呤二核苷酸(FAD)依赖的单胺氧化酶。研究证实,LSD1的异常表达与肿瘤的转移和增殖密切相关,是目前肿瘤靶向治疗的重要靶点之一。另外,LSD1还参与神经退行性疾病、心血管疾病、炎症反应等多种疾病的发生发展。目前,已经有多个抑制剂进入临床研究阶段。本文对LSD1的结构、作用机制以及LSD1抑制剂的研究进展作简要介绍,为设计开发新型LSD1抑制剂提供参考。

关键词： LSD1 肿瘤去甲基化酶抑制剂临床研究

维普期刊数据库博看期刊

Effect of Olefins on Formation of Sulfur Compounds in FCC Gasoline

在线全文

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2008年第3期10卷 23-31页

作者： Tang Jinlian Xu Youhao gong jianhong Wang Xieqing Research Institute of Petroleum Processing SINOPEC Beijing 100083

The effect of olefins on formation of sulfur compounds in FCC gasoline was studied in a small-scale fixed fluidized bed （FFB） unit at temperatures ranging from 400℃ to 500℃, a weight hourly space velocity （WHSV） of 10 h-1, and a catalyst/oil ratio of 6. The results showed that C4--C6 olefins contained in the FCC gasoline could react with HzS to form predominantly thiophenes, alkyl-thiophenes as well as a fractional amount of thiols, while large molecular olefins such as heptene could react with hydrogen sulfide to form benzothiophenes. The amount of sulfur compounds formed at different tem- peratures over different catalysts were in proportion to the mass fractions of olefins in the feedstock, with the amount of sulfur compounds formed over REUSY catalyst exceeding those formed over the shape selective zeolite catalyst owing to the effect of catalyst performance and the impact of catalyst on the degree of olefin conversion. The amount of sulfur compounds generated and their increase reached a maximum at 450℃ and a minimum at 400℃ because of the influence of temperature on the thermodynamic and kinetic constants for formation of sulfur compound as well as on the olefin conversion degree. Based on the above-mentioned study, a reaction network and a model for prediction of sulfur compounds generated upon reaction of olefins in FCC gasoline with HES were established.

关键词： gasoline olefin HzS thiol thiophene formation, sulfur compounds in FCC gasoline reaction network prediction model