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Relationship of Purity Gradient and Accumulation with Feed Composition in Two-Component Countercurrent Extraction System

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Journal of Rare Earths 1999年第2期17卷 5-8页

作者： jia, jiangtao Yan, Chunhua Liao, Chunsheng Wang, Mingwen Li, Biaoguo Peking Univ Beijing China

The formulations of the purity gradient and accumulation were proposed, and their relationships with purity distribution were studied in twocomponent countercurrent extraction system. By the static and dynamic simulation, the purity distribution curves with various feed composition and separation factor were interrelated, and the related purity gradient and accumulation were calculated. The results show that there are purity gradient maxima in extraction and scrubbing sections for each component in both aqueous and organic phases. The accumulation of each component in both phases increases with its content in the feed. Meanwhile, its absolute value of purity gradient decreases in extraction section and increases in scrubbing section. Furthermore, the purity gradient and accumulation as the monitoring parameters for automation were evaluated. The precision of the online analysis in the sensitive point and the range of accumulation were also estimated.

关键词： Rare earths Purity gradient Accumulation Countercurrent extraction Feed Composition

Application of the concepts of neural network and tree structure in rare earth separations

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Chinese Science Bulletin 2001年第9期46卷 744-746页

作者： jiangtao jia Sheng Wu Yawen Zhang Chunsheng Liao Chunhua Yan Guangxian Xu Peking Univ State Key Lab Rare Earth Mat Chem & Applicat Beijing 100871 Peoples R China

The concepts of neural network and tree structure are introduced to rare earth separations. The recursive relations and analytical expression for calculating the possible flow sheets and processes are derived in multi-component systems based on dichotomy. As an example, the application of the concepts is elucidated in detail in a separation of light rare earths containing La, Ce, Pr and Nd in the HEH(EHP)-HC1 system. The results show that this method is beneficial to summarizing and classifying the flow sheets and processes in rare earth separations, and is essential to the optimization of separation flow sheets. It can also be applied to the separation into group situations and other similar cases, too.

关键词： neural network tree structure rare earth separation.

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一种带抽蓄机组水电系统短期优化调度方法

电网技术 2017年第5期41卷 1597-1602页

作者：贾江涛西安工程大学电子信息学院陕西省西安市710048

采用线性混合整数规划(MILP)方法研究水电系统短期优化调度问题成为国际学术界的新潮流,其研究难点在于调度模型中非线性因素的线性化方法设计。在模型分析的基础上,针对含抽水蓄能机组的梯级水电系统中存在的主要复杂约束,如非线性水... 详细信息

采用线性混合整数规划(MILP)方法研究水电系统短期优化调度问题成为国际学术界的新潮流,其研究难点在于调度模型中非线性因素的线性化方法设计。在模型分析的基础上,针对含抽水蓄能机组的梯级水电系统中存在的主要复杂约束,如非线性水电转换关系、最小开关机时间、抽蓄机组特性、水流延时等约束,提出相应的线性化方法及约束转换方案,解决了模型转化的研究难题。测试结果表明,文中提出的系统化方法具有普适性,适应于各种模型中类似的非线性因素线性化及相应的约束处理,方法有效实用,可灵活地拓展到其他调度领域。

关键词：梯级水库线性混合整数规划抽水蓄能机组水电转换关系

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考虑水头影响的梯级水电站群短期优化调度

电力系统自动化 2009年第13期33卷 13-16页

作者：贾江涛管晓宏翟桥柱西安交通大学机械制造系统国家重点实验室和智能网络与网络安全教育部重点实验室陕西省西安市710049

在梯级水电站群调度模型中恰当表述离散运行区间约束以及水头影响并在求解算法中有效处理这些因素是梯级水电站群调度中面临的挑战。文中通过将水头离散化,设定多维0-1状态变量及相关约束,建立了一个梯级水电系统短期调度的线性混合整... 详细信息

在梯级水电站群调度模型中恰当表述离散运行区间约束以及水头影响并在求解算法中有效处理这些因素是梯级水电站群调度中面临的挑战。文中通过将水头离散化,设定多维0-1状态变量及相关约束,建立了一个梯级水电系统短期调度的线性混合整数规划模型,能够综合考虑水头影响、不连续运行区间等约束。模型采用CPLEX软件包求解,对一个包含3个梯级水库、12台机组的梯级水电系统进行了测试,结果表明所提出的建模方法是有效的,能灵活处理受水头影响的水库群水电站短期调度中的多种复杂因素。

关键词：短期调度梯级水电系统水头不连续运行区间线性混合整数规划

信息化对能源效率的影响——基于北京市的实证研究

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科技管理研究 2011年第21期31卷 186-188页

作者：潘国刚贾江涛中国石油大学(华东)经济管理学院山东青岛266555

选择信息量、信息装备水平及通信主体水平三个指标对信息化进行刻画,以北京市为例,对信息化与能源效率的相关性进行实证研究。研究证实信息化与能源效率存在明显的正相关性,企业信息化及国民经济信息化水平越高,越有利于能源效率的提升。

关键词：信息化能源效率相关性

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分光光度法测定混合稀土中的钕

稀有金属 2008年第4期32卷 540-542页

作者：张玻贾江涛廖春生严纯华北京大学稀土材料化学及应用国家重点实验室

采用分光光度法,以740 nm为测定波长测定混合稀土样品中的钕含量。在此波长下,吸光度-浓度工作曲线的线性相关系数大于0.9999。对已知组成的6个轻稀土混合物样品的测量结果表明,回收率介于98.97%-101.9%之间,检测下限为2.0 mg Nd2O3/ml... 详细信息

采用分光光度法,以740 nm为测定波长测定混合稀土样品中的钕含量。在此波长下,吸光度-浓度工作曲线的线性相关系数大于0.9999。对已知组成的6个轻稀土混合物样品的测量结果表明,回收率介于98.97%-101.9%之间,检测下限为2.0 mg Nd2O3/ml。本方法可准确测定镨钕混合物、混合轻稀土等产品或中控样品中的钕含量,具有测量结果可靠、速度快、仪器常规和实验条件简便易行等特点,适用含钕样品的快速测定。

关键词：分光光度法钕稀土

Effect of Cycling Loaded Rare Earths on Stripping Process in P507 Extraction System

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Journal of Rare Earths 2006年第2期24卷 176-176页

作者： Wu Sheng Liao Chunsheng jia jiangtao Yan Chunhua State Key Lab of Rare Earth Materials Chemistry and Applications Peking University Beijing 100871 China Beijing Institute of Founder Rare Earth Science and Technology Co. Ltd. Beijing 100085 China

P507 （HEH [EHP]） is an important extractant for the separation of rare earth and is widely used in industry. Since the complexes of heavy rare earth ions with saponified P507 are so stable that the rare earth ions are difficult to be exchanged and stripped by H^＋ ions. Thus, the cycled extractant loads certain amount of heavy rare earth ion after stripped by acid. This amount of rare earth ions loaded in blank organic phase is named as the ＂cycling loaded rare earth ions （CLREs）＂. In the separation process of Tm^3＋, Yb^3 ＋, and Lu^3 ＋ , the amount of CLREs carl be more than 10% of the normal capacity of saponifiedorganic phase. In fact, CLREs affect the separation efficiency and decrease the purity of the products. Based on the extracting-stripping equilibrium and mass balance, the influence of different process parameters on the amount of CLREs was studied by computer simulation. The results indicate that higher acid consumption and more stripping stages are required to eliminate CLREs. For an industrial practice, however, the acid consumption and the number of stripping stage can be designed by choosing an economic process and controlling CLREs at a reasonable level.

关键词： countercurrent extraction stripping process computer simulation heavy rare earths

Fuel Consumption Optimization for an Automatic Transmission Passenger Vehicle

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Fuel Consumption Optimization for an Automatic Transmission ...

Economical and Technical Indices of Decomposition Processes of Typical Rare Earth Minerals in China

2015中国汽车工程学会年会

作者： Weifang Chen Rulong Li Xiong Xiao Jifan Ding jiangtao jia Yongjin Peng Zhonggao Yu Technical Center Dongfeng Motor Corporation

In order to address the customer complaint the fuel consumption of an automatic transmission vehicle,the calibration data of both engine and the automatic transmission are analyzed in *** is found that the cut-off of vehicle deceleration fuel,automatic transmission gear-shifting curve,and engine idle speed can be optimized to reduce the fuel consumption of the vehicle through calibration *** with the original calibration,the new calibration greatly reduces the fuel consumption both on the actual urban driving condition and the NEDC cycle.

关键词： automatic transmission fuel consumption calibration

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Journal of Rare Earths 2006年第4期24卷 428-428页

作者： Wang Weisheng Wang Songling jia jiangtao Zhang Zhaobing College of Resources and Environments Wuhan Institute of Technology Wuhan 470070 China Beijing Institute of Founder Rare Earth Sci. ＆ Tech. Co. Ltd. Beijing 100085 China Gansu Rare Earth Group Co. Ltd. Baiyin 730922 China

The typical treatment processes we of main rare earth resources in China, especially the economical and technical indices of the minerals decomposition of such as ionic adsorptive rare earth deposit ore, bastnasite and mixed with monazite in Baotou, was presented. The dispersive ionic adsorptive rare earth deposit ore, which is enriched on valuable middle and heavy elements, concentrated by bicarbonate precipitation after exchanging with ammonium sulphate solution. Planting and waste liquid should be focused. Bastnasite and/or monazite, which is enriched light rare earth, centralized with high content and capacity,concentrated by gravimetric, magnetic, floating, then decomposed by calcinations and leaching. Waste liquid, gases and dregs should be treated properly. Investors interested in RE industry can find out the technical and economic characters and history of various RE minerals. Engineers and workers in RE industry can also find the differences of the plants, so as to make more efforts on improving management. However, solving environment protection problems for each process should be committed extraordinarily in order to make a sustainable development of RE industry.

关键词： mineral decomposition economical and technique indices environment protection rare earths