查询词典 purity

The invention relates to a dynamic matrix control system of high-purity distillation, which comprises distillation tower, intelligent checker, DCS system, superior host, and on-site bus, while they are connected. The control system uses tower product group as the object variable, and the reflux ratio and reboil ratio as control variable; the superior receives history temperature and pressure data from the DCS real-time database, via the predict control and dynamic matrix controller, to obtain the output values of present controller as reflux ratio and reboil ratio, then feedback said two values to DCS system, to function the distillation object. The invention can confirm the high-purity stable operation, with better dynamical control.

本发明公开了一种高纯精馏的动态矩阵控制系统和方法；系统包括：精馏塔、智能检测仪表、DCS系统、上位机和现场总线；所述精馏塔、智能检测仪表、DCS系统和上位机通过现场总线依次相连，实现信息流的上传和下达；本发明所涉及的控制系统采用塔双端产品组分为被控变量，回流比和再沸比为对应的控制变量；上位机从DCS实时数据库中获得历史的温度、压力等数据，通过推断控制环节和动态矩阵控制器环节，得到当前控制器的输出值-回流比和再沸比，再把控制器输出值返回给DCS系统，实现了对高纯精馏过程的双端产品高纯控制，对双端组分的高纯度平稳操作，具有很好的动态品质和控制效果。

The high purity aluminium performs better than the primitive one in conductivity, tractility, and is more reflexible and anti-corrosive. It is widely applied in electronic industry and aviation and aerospace area. At present, few manufacturers in China are capable of producing high purity aluminium of 99.999%(5N). Plus, their production is limited and the manufacturing process is outdated.

具有比原铝更好的导电性、延展性、反射性和抗腐蚀性，在电子工业及航空航天等领域有着广泛的用途，目前国内只有极少数公司厂家能够生产纯度达到99.999%（5N）高纯铝，且产量少，生产工艺落后。

Fe and Al in the system were removed by precipitation at pH≈5. Co2 was obtained by precipitation at pH=9.5~10, it was then purified by reprecipitation. Co3O4 was obtained by calcining Co2 at 500℃ for 2h, the purity of which was 99.3%. The recovery rate of Co was 97%. Li2CO3 was obtained by adding Na2CO3 to the mother liquor, the purity of which was 97.8%. The one-time recovery for Li was 73%. The mother liquor can be reused after being cooled to below 10℃ and Na2SO410H2O is recovered.

体系中的Fe、Al从杂质在pH≈5时沉淀除去；Co2在pH为9.5~10沉淀得到，经酸溶解后二次沉淀提纯，500℃煅烧2.0h得Co3O4，其纯度达到99.3%，钴的回收率达97%，母液中Li离子加Na2CO3处理，沉淀得Li2CO3，其纯度达97.8%，锂的一次回收率达73%，母液经冷却至10℃以下除去Na2SO410H2O后可循环使用。

Also known as saturability, is the same purity of tone color purity.

饱和度 也叫纯度，是同一色调中颜色的纯度。

In only 12 month, Tanan Shenran 150 thousand M3 per day LNG project has finished the work from the very beginning to the very end. This project has created a milestone on China gas history, it is not only the first on constructing period, but also make many first on technology: The first self-owned intellectual property LNG plant which is nitrogen expanding and recycling refrigerating in China; the first plant which are all made in China; the first plant which use the parallel connection temperature expander refrigerate technology; the first use the pressure dryness vaporizer technology on Nitrogen gas liquefaction and purity system; the first use the deep fat stove technology in purity system; the piston nitrogen compressor is the biggest in China and etc.

短短12个月内，泰安深燃日产15万立方米液化天然气工程项目完成了从立项到投产的全部建设工程，该套项目的顺利投产完成创造了中国燃气史上的一个新的里程碑，不仅在建设周期上创造了第一，在技术方面同样创造了多个第一：我国首个具有自有知识产权的氮气膨胀、循环制冷液化天然气设备，填补了国内在这一技术领域的空白，对我国名族天然气液化事业的发展产生了积极的推动作用；首次实现设备国产化达到100%；首次采用并联双温区的膨胀机制冷技术；首次将等压干燥脱水技术应用于天然气液化系统、净化系统；首次在净化系统采用了导热油炉、单炉双温区共用形式；所采用的单级双列活塞式氮气压缩机位国内最大等技术。

In only 12 month, Tanan Shenran 150 thousand M3 per dayLNG project has finished the work from the very beginning to the very end. This project has created a milestone on China gas history, it is not only the first on constructing period, but also make many first on technology: The first self-owned intellectual property LNG plant which is nitrogen expanding and recycling refrigerating in China; the first plant which are all made in China; the first plant which use the parallel connection temperature expander refrigerate technology; the first use the pressure dryness vaporizer technology on Nitrogen gas liquefaction and purity system; the first use the deep fat stove technology in purity system; the piston nitrogen compressor is the biggest in China and etc.

短短12个月内，泰安深燃日产15万立方米液化天然气工程项目完成了从立项到投产的全部建设工程，该套项目的顺利投产完成创造了中国燃气史上的一个新的里程碑，不仅在建设周期上创造了第一，在技术方面同样创造了多个第一：我国首个具有自有知识产权的氮气膨胀、循环制冷液化天然气设备，填补了国内在这一技术领域的空白，对我国名族天然气液化事业的发展产生了积极的推动作用；首次实现设备国产化达到100%；首次采用并联双温区的膨胀机制冷技术；首次将等压干燥脱水技术应用于天然气液化系统、净化系统；首次在净化系统采用了导热油炉、单炉双温区共用形式；所采用的单级双列活塞式氮气压缩机位国内最大等技术。

As to the high polarity, high boiling point resultant—trimesic acid, the analysis methods of infrared spetrum, gas chromatography-mass spectroscopy, vapour-phase chromatography, acid number titration and so on are seperately used to characterize its property. Infrared spetrum and gas chromatography-mass spectroscopy are used to have a qualitative analysis on the resultant and are compared with the stand diagram. Sulfuric acid-methanol esterification and rapid esterification are used to prepare the trimesic acid trimethyl-ester and have a FID quantitative analysis. So that we make sure the purity of trimesic acid in the resultant and also we have an acid alkali titration on the resultant to get its acid number, in order to verify the purity of trimesic acid in the resultant.

对于高极性、高沸点的固体产物均苯三甲酸，分别采用红外光谱、气质联用、气相色谱、酸值滴定等分析手段进行了表征：利用红外光谱、气质联用的方法进行产物的定性分析，并与在同一仪器、同一条件下做出的标准谱图进行比对；采用硫酸-甲醇酯化法和快速酯化法制备出均苯三甲酸三甲酯，对其进行气相色谱FID定量分析，进而确定固体产物中均苯三甲酸的纯度；用酸碱滴定法确定固体产物的酸值，以对固体产物中均苯三甲酸的纯度进行验证。

In this paper, the preparations, analytical methods, physical characteristics of ferrates and the application of ferrates in the fields of synthesis of organic compounds, treatment of waste water and the usage as cathode material in alkaline batteries are summarized. The electrochemical preparation of sodium ferrate is described and the relationships between the main parameters in the process are deeply investigated. One method of in-situ electrosynthesizing potassium ferrate of high purity with both high efficiency and low energy consumption is invented. The cyclic voltammogram and feature characterization of iron anode in alkaline solutions is studied. One preparation method of ex-situ electrosynthesizing tripotassium sodium ferrate of high purity is created.

本文概述了高铁化合物的制备方法、分析方法、物理化学性质及其在氧化合成有机物、水处理和用作碱性电池正极材料等领域的应用；深入系统地研究了高铁酸钠的电化学制备及其影响参数之间的关系；研发了一种高效率低能耗直接电合成高纯度高铁酸钾的工艺方法；探讨了铁电极在浓的苛性碱溶液中的循环伏安特征及其极化特征；研发了一种电化学制备高铁酸三钾钠的工艺方法并用多种现代分析测试技术对K_3Na(FeO_4，)_2进行了表征。

Pitta spent most of his time obsessed with the purity of the Imperial New Order, and especially the racial purity aspects of it (reputedly, even COMPNOR members felt he was too vociferous); in a classic case of psychological projection (since Pitta himself was not pure Human—he also had Etti and Borneck blood), Pitta spent considerable effort investigating varied people's racial background and purging ruthlessly those who were even the slightest bit "impure".

庇塔花费了他的大部分时间沉迷于帝国新秩序的的纯净理论、尤其是其中的种族纯净部分（传言说甚至新秩序维护委员会成员都认为他过于嚣张了）。作为心理投射的一个经典案例（基于庇塔本人并非纯粹的人类—他同样拥有艾提和伯内克血统），庇塔耗费了可观的精力调查各种人群的人种背景，并残忍地清除了那些即便是血统只有极少部分不够纯粹的人。

The paper describes the new developments of producing high purity indium by vacuum distillation and thin layer fused salt electrolysis refining,as well as production of high purity metallic indium powder via disproportioning indium monoxide in aqueous medium.

报道了俄罗斯使用真空蒸馏和熔盐电解精炼制取高纯铟，以及用一氯化铟在水溶液中的歧化法制备金属铟粉的新进展。

Connectors are lines that can be anchored to particular places, called glue points , on the graphic object.

连接符，可固定在图形对象的特定的地方的线条。

Another way of putting it, too many agents have a say in each other's work, and bureaucratic rigor mortis sets in.

另一种表达是，太多的作用物在彼此的工作里都有话语权，官僚的僵尸开始抬头。