开封空分签订63000m~3/h特大型空分设备合同

<正>2012年3月23日,开封空分集团有限公司(以下简称:开封空分)与东华工程科技股份有限公司成功签订一套63000 m3/h成套空分设备合同,该合同实现了开封空分60000 m3/h以上特大型空分设备零的突破,树立了特大型空分设备业绩,为今后开拓特大型空分设备市场份额奠定了坚实基础。     

赛普空分实现2011年开门红

<正>2011年伊始,开封赛普空分集团有限公司(以下简称:赛普空分)实现了开门红。2011年1月5日,赛普空分与仙福钢铁集团有限公司签订了1套KDONAr-12000/12000/400型空分设备供货合同。此套空分设备的成功签订,为赛普空分进一步开拓云     

120000m～3/h等级空分设备配套阀门选型

针对120 000 m3/h特大型空分设备阀门选型的设计,通过分析阀门工作参数和内部结构,在充分考虑空分安全性前提下,选择满足工艺条件和控制要求的阀门。介绍了特大型空分设备上重要阀门在选型上不同于常规空分设计的一些改进措施,科学合理地选择适用的阀门,使阀门材质、结构及功能应用适合于整套空分工况的需要,为空分设备提供了安全可靠的技术保证,同时也降低了建造特大型空分设备的建设成本,为特大等级空分设备全面合理选择阀门提供有利的参考经验。     

迪尔空分签约安丰钢铁30000m~3/h空分设备合同

<正>9月15日消息,开封迪尔空分实业有限公司近日与安丰钢铁集团再次签订了一套KDON(Ar)-30000/70000-900型空分设备合同。这是迪尔空分与安丰钢铁集团第十次携手,也是迪尔空分与安丰钢铁集团第二次合作30000等级空分项目,为迪尔空分在行业内制造大型空分设备奠定了有力基础。据了解,第一套30000等级空分设备开车至今,运行平稳,得到了安丰钢铁的好     

成套市场

<正>川空与广钢气体2套40000Nm~3/h空分项目EPC总包合同9月19日,四川空分设备(集团)有限责任公司与广钢气体能源有限公司签订了河南骏化2套40000Nm~3/h(O_2)空分项目EPC总包合同。(川空供稿)中国空分中标安阳钢铁4#23500Nm~3/h空分总承包项目近日,中国空分设备有限公司正式中标安阳钢铁股份有限公司4#23500Nm~3/h空分总承包项目。此次空分合同的签订,是2003年以来中国空分与安阳钢铁在空分总承包项目上的第3次合作。     

空分装置进水的实验研究与处理

某公司空分装置由于循环氮压机冷却器漏水,氮气携带游离水进入板式换热器结冰堵塞通道。因为空分装置内存有分子筛粉末这一特殊性,对空分装置的进水过程和加热过程分别进行了实验研究,在实验研究的基础上,研究制定了空分装置的特殊加热方法,保证了空分装置进水后加热一次成功。     

大型空分设备技术现状及进展

介绍了大型空分设备的发展状况,结合杭氧空分设备设计制造的实际情况,对大型空分设备的技术现状及进展进行了叙述,指出空分设备的大型化、流程形式的多样化、变负荷技术的自动化和工程项目一体化是空分行业今后一个时期的主要研究方向。     

低温法小型空分设备:技术进步、与液体输送的竞争和对策

统计了我国空分行业历年已生产的 80 0m3 /h (O2 )以下小型空分设备的数量。介绍了10多年来小型空分设备的技术进步 ,特别是低能耗小空分设备的出现。统计了各种液氧生产方法的制氧单位电耗。分析了低温法小型空分设备与液体输送单位氧气的成本比较 ,并讨论了低温法小型空分设备在与液体输送的市场竞争中如何取胜的对策。     

成套市场

<正>四川空分与土耳其卡特米尔钢厂签订42000空分合同5月16日,四川空分与土耳其KARDEMIR(卡特米尔)钢厂签订了42000Nm3/h空分设备订货合同,合同签字仪式在四川空分(集团)公司举行。四川空分(集团)公司领导单金铭等与卡特米尔钢厂董事会董事AhmetYolbulan先生一行7人共同出席了签字仪式。(四川空分供稿)     

分子筛型空分装置优点及与其它流程的比较

比较了分子筛吸附器的空分装置与可逆式换热器的空分装置的能耗,列述了分子筛吸附器空分装置的应用,与可逆式空分流程相比,分子筛型空分流程可以多产:氧气2%、氩气13.5%、氮气30~25%;最后介绍了分子筛型空分装置在操作方面的15个优点。林德公司已制造投运该型空分装置350多套,其中40000Nm~3/h以上空分装置20多套。图8表3。     

Hydroprinted Liquid‐Alloy‐Based Morphing Electronics for Fast‐Growing/Tender Plants: From Physiology Monitoring to Habit Manipulation

Monitoring physiological signals and manipulating growth habits of living plants in real time are important for botany research, biohybrid plant robots, and precision agriculture. Although emerging epidermal electronics that can conveniently acquire vital signals of living organisms exhibit a high potential for such scenarios, it is a significant challenge to adapt such devices for plants, because they are fragile and usually have complex surfaces that can change significantly during rapid growth. A gentle fabrication process is critical in order to employ compliant electronic systems to adapt to this highly dynamic situation. In this study, a hydroprinted liquid‐alloy‐based morphing electronics (LAME) process is employed for fast‐growing plants that will sense physiological signals and even function as a biohybrid to determine plant behavior on demand. Besides various surfaces of inorganic targeting substrates, pinning liquid alloy circuits onto the complex plant epidermis is enhanced by introducing high‐surface‐energy liquid. Functionally, the new developed LAME can be used to monitor leaf moisture content and length, and manipulate leaf and bean sprout orientation. This study lays the foundation for a new form of morphing electronics for botany or biohybrid plant robots, potentially impacting the next generation of precision agriculture and smart hybrid robots.     

Liquid metal enabled plant injectable electronics

Extensive efforts have been made on utilizing conductive materials to monitor plant growth states. However, traditional methods are facing difficulties as physiological signals are usually concealed within plant tissues. Here, we propose a new conceptual plant injectable electronics based on the fluidic properties and high conductivity of liquid metals, which can not only resolve the existing challenges but also endow plants with diverse electronic capabilities. Following this principle, the basic electronic components (resistors, inductors, and capacitors) are successfully fabricated by injecting liquid metal into the target sites of the living plant. Furthermore, we demonstrate typical applications derived therefrom, including highly stable electrodes, long-term working sensors, and stealthy antennae with variable characteristics. Specifically, the resulting liquid metal injectable electrodes exhibit outstanding electric signal capture capability (over 2000% improvement versus printed electrodes), and remarkable anti-interference characteristics compared to conventional rigid needle electrodes. Injectable resistance and capacitance sensors provide ever-useful ways for real-time monitoring of plant position and physiological signals. More importantly, the capacitive sensor obtained by injection gives access to information about the interior of the plant that cannot be detected from non-injectable capacitive sensors otherwise. Additionally, antennas invisible from the outside with variable characteristics are manufactured and evaluated in situ in living plants, further justifying the capability of the plant injectable electronics. The present principle suggests an unconventional strategy to combine plants and electronics, which signifies a paradigm shift and is expected to serve as a basic platform for additional investigation in plant electrophysiology, electronic plants, and plant robots.     

KDO-80Y型航空液氧设备的运行与改进

本文从航空液氧设备的发展历程 ,介绍了杭州制氧机集团有限公司研制的KDO— 80Y型空分设备及其在空军某部的运行情况 ,并对该设备提出了改进措施     

钢铁企业用空分装置的调峰、氧气终压及适用流程的探讨

目前对空分装置的要求出现了两个较明显的变化 :一是要求产液量大、氩产量高 ;二是要求氧气终压有所降低。对第二个变化进行了一些分析 ,提出了一种能同时满足这两种要求、又省投资和运行费用的流程组合 ,并作了比较和分析。介绍了球罐与低温液体贮槽及“球罐 +液氧调峰”的能力及优缺点 ,对我国钢铁企业适用空分流程进行探讨。最后提出了六点结论。     

Natural radionuclides in zircon and related radiological impacts in mineral separation plants

The activity concentration of uranium and thorium present in zircon obtained from mineral sand industries are presented. External gamma radiation levels and inhalation of airborne dust are found to be the significant routes of radiation exposure to occupational workers. The annual average dose attributed to zircon processing is estimated to be 2.3 mSv in the plants under study. This paper presents the results of external gamma measurements, estimation of airborne radioactivity in zircon process locations and radon and thoron in the occupational environment of two mineral separation plants in India. Analyses of the solid wastes and liquid effluent generated and resultant environmental impacts are indicated.     

环形含液容器动力分析

环形含液容器在以华龙一号、AP1000和CAP1400为代表的第三代核电站中得到普遍应用,其本身的动力特性与动力反应是有待解决的重要安全问题。该文以环形含液系统动力学方程的建立和求解为主要研究目的,基于势流体理论和第二类边界条件的Bessel函数展开,推导环形容器液体小幅振动的振动频率和动液压力响应的理论解。通过极限分析、与试验结果以及与有限元方法对比,验证理论公式的正确性。对环形水箱动力反应问题开展计算,初步分析了环形水箱内外环动水压力反应规律和特点,并与同几何尺寸的圆柱形水箱对比,分析其振动频率与动液压力响应规律的异同。结果表明:由于环形水箱与圆柱形水箱液体振动频率的差异,两者动水压力反应在可引发其中某一模型液体共振的荷载作用下将出现较大差异。该文研究可为环形含液容器的工程应用提供理论支持。     

Cryobank of plant genetic resources in Russian Academy of Sciences

Cryopreservation is the most reliable method for long-term storage of plant genetic resources. A review of cell injury by ice crystals and dehydration during a freeze–thaw cycle is given. For successful regeneration of plants and cultures after cryopreservation of their cells, the development of reliable cryopreservation procedure is required including preliminary cultivation, treatment by cryoprotectors, freezing by different methods, thawing and recultivation. Up to now 27 cell lines successfully resumed their growth after storage in liquid nitrogen and preserved their specific features and biosynthetic potential. Besides, shoot tips of 40 cultivars of potato, rose, strawberry and raspberry regenerated plants both in vitro and in vivo after cryopreservation. The longest storage duration was 25 years. Now in liquid nitrogen we continuously store 24 cell strains of rare medicinal plants, shoot tips of seven cultivars of strawberry and raspberry and seeds of 250 endangered plant species collected over all Russian territory.     

磷脂的高效液相色谱分析

天然磷脂是含磷酸的类脂化合物,广泛存在于植物、动物及微生物体中,在工业生产、食品科学、医药学、生命科学等研究方面都有重要的应用。磷脂的研究手段多样,高效液相色谱在磷脂的分离、检测方面具有优势。本文结合近年来国内外高效液相色谱分离磷脂的研究报道,对高效液相色谱分离、检测磷脂的方法进行了分类、评价。     

Study of Extraction of Palladium from Nitric Acid Solutions with Nitrogen-Containing Compounds,as Applied to Recovery of Fission Palladium from Spent Nuclear Fuel of Nuclear Power Plants: 3. Optimization of Extraction Process for Palladium Recovery and Refining

An extraction process for recovery of fission Pd is proposed. The process parameters are optimized with simulated high-level liquid radioactive waste from nuclear power plants using tri-n-octylamine (TOA) and tricaprylmethylammonium nitrate (Aliquat 336 nitrate) as extractants. The degree of Pd decontamination from fission and corrosion products is estimated and the major interfering components are determined.