一起喷砂事故原因分析及防范措施

由于冷箱内低温液体泄漏,KDONAr-3500Y/1000Y/135Y型液体空分设备需要扒砂检修。但由于加温不彻底以及违规扒砂,发生了严重的爆炸性喷砂事故。介绍喷砂事故经过和破坏情况,分析喷砂原因和预防措施。     

有关全液体空分设备开车操作的探讨

介绍了华东气体公司的KDONAr 2 0 0 0Y/ 370 0Y/ 70Y型空气分离设备流程特点 ,总结分析该设备开车中出现的问题 ,并以此为例探讨全液体空分设备开车的操作特点     

KDON-1500Y/1500Y型液体设备开发和运行

简介了已投入运行的石家庄京联KDON 15 0 0Y/ 15 0 0Y型液体设备的工艺流程和主要性能指标 ,详细介绍了设备配套情况和运行情况 ,并分析了其优点。     

KDON-400Y/400Y型空分设备投产总结

文章介绍了全低压流程KDON - 4 0 0Y/ 4 0 0Y型空分设备的工艺流程、设计参数、联机调试和考核结构 ;并对投产中存在的主要问题提出了改进的方法。     

6000m~3/h空分设备氧气管线冻裂的原因分析

介绍带氪氙提纯装置的 6 0 0 0m3 /h空分设备 ,主冷的大量液体从气氧管线流出冻裂冷箱外部的气氧管线事故的现象、原因 ,查找冻裂的具体过程 ;并介绍针对此事故所采取相应的措施 ,以防止类似的事故发生。     

KDON-400Y/400Y型空分设备循环气系统带水的分析及处理

分析了KDON - 40 0Y/ 4 0 0Y型空分设备循环气系统带水的原因 ,对流程部分进行了相应改进 ,采用了新的加热工艺 ,使问题得到圆满解决     

苏州制氧机有限责任公司2004年空分设备销售业绩

客名称产品内容数量沅江纸业有限公司KDON 3 5 0 /70 0空分设备 1套武汉长利玻璃有限公司KDN 10 0 0高纯氮设备 2套无锡市新光电源有限公司KDON 3 5 0 /70 0空分设备 1套延炼实业集团公司KDN 10 0 0 /13 5Y高纯氮设备 1套湖北金港化学科技公司KDN 2 5 0 /2 5Y高纯氮设备 2套深圳南华气体工业有限公司KDN 2 0 0 0 /70Y高纯氮设备 1套张家港华东特种玻璃有限公司KDN 2 40 0 /5 0Y高纯氮设备 1套商丘康福特气体总厂KDON 170 /10 0空分设备 1套上海班华工机械有限公司 (出口越南 )KDN 62 0 /3 0Y制氮机 1套秦皇岛北方玻璃集团有限…     

空分设备中碳氢化合物爆炸机理分析及含量控制

结合10 0 0 0m3 /h空分设备主冷爆炸事故,分析了空分设备中乙炔等碳氢化合物的爆炸机理,提出了对主冷中乙炔等碳氢化合物含量进行分析与监测的方法,介绍了在控制乙炔等碳氢化合物含量方面所采取的措施     

中大型低温液体产品空分设备开发初探

介绍了开发KDON—3000Y/7000Y型低温液体产品空分设备的必要性、可行性和流程组织。图1。     

超细Y2O3∶Eu荧光粉的制备及其阴极射线发光研究

介绍了尿素 溶胶法制备粒径为 10 0～ 2 0 0nm的超细Y2 O3 ∶Eu荧光粉的实验。对荧光粉的粒径和形貌进行了SEM分析 ,测量和分析了荧光粉的XRD谱图以及微观晶体结构 ,测量了 8kV电压下荧光粉的阴极射线发光的光谱和亮度 ,并与商品微米Y2 O3 ∶Eu荧光粉进行了比较。对实验结果进行了讨论     

Y2O3/WO3光催化降解溴酚蓝染料的研究

采用光催化荆Y2O3/WO3对含溴酚蓝染料废水的处理进行了研究,探讨了光催化剂作用机理,讨论了光催化剂组成、用量、试液pH值、光照时间与溴酚蓝染料溶液脱色率的关系.结果表明,当w(Y2O3)=1.5%、50mL时试液的起始质量浓度为20mg/L,催化剂用量为0.400g,pH=7.0,光照6h时溴酚蓝染料溶液的脱色率可达96.8%.     

The influence of Yttrium on leakage current and dielectric properties of amorphous Al<Subscript>2</Subscript>O<Subscript>3</Subscript> thin film derived by sol–gel

Amorphous Yttrium-doped aluminum oxide thin films were deposited on Pt/Ti/SiO₂/Si substrates by sol–gel. It was observed by field emission scanning electron microscope that the surface morphology was smooth and homogeneous. From Fourier Transform Infrared Spectroscopy, a broad absorption band at 700–1000 cm^?1 owing to vibrations of aluminum oxide was observed. The absorption peaks strength relating to hydroxyl group decreased with the increase of Y doping concentration. The electrical properties were investigated in terms of Y doping content and relative humidity. The results show that the existence of hydroxyl and absorbed water makes a significant influence on the electric properties of films. The electric conduction characteristics and dielectric breakdown properties are modified by the decrease of content of hydroxyl and absorbed water, leading to a lower leakage current and higher dielectric strength. It can be seen that the leakage current of films decreases with the Y doping, and could be reasonably deduced that leakage current can be effectively tuned by Y doping.     

A complementary spectroscopic study on the nickel-containing zeolite Y modified by solid-state dealumination

The coordination of Ni²⁺ ions in the dehydrated and dealuminated zeolite Y samples were studied by solid-state UV–vis diffuse reflectance spectroscopy. A solid-state dealumination method was employed for preparation of two successively dealuminated zeolite Y using crystalline (NH₄)₂SiF₆. Both solid-state and aqueous ion exchange methods were used to prepare nickel-containing zeolite samples. In the dehydrated zeolite samples, nickel cations are located in both regular and distorted tetrahedral symmetries. Their coordination may change from four to five upon adsorption of water molecules following the removal of sample cell from the helium purge system. The spectrum of the dehydrated nickel-containing sample which the zeolite Y was subjected to one step dealumination shows preference for five or six coordinated nickel cations. The spectrum of nickel-containing zeolite sample subjected to a further second step of dealumination is more broaden and does not give reliable data on the coordination of nickel.     

Oxidation of acidic dye Eosin Y by the solar photo-Fenton processes

Oxidation of acidic dye Eosin Y has been investigated with Fenton process and photo-Fenton process (solar light or artificial light source). With UV-Fenton process and Fenton, 42.5% and 21.3% of dye could be removed from the water, respectively. However, 94.1% of dye was removed in solar-Fenton in 90min. Based on solar-Fenton process, the effect of pH value and the concentration of dye, Fe(2+), H(2)O(2) as well as oxalic acid concentration on Eosin Y degradation efficiency were investigated. In 60min, 96% of Eosin Y was degraded when the pH value was 3.5 and the concentration of Fe(2+), H(2)O(2) and oxalic acid was 10mol/L, 600mg/L and 300mg/L, respectively. The Eosin Y degradation was dependent on the dye concentration. That is higher Eosin Y concentration resulted in lower degradation efficiency. Under the conditions of pH 3.5, the Eosin Y apparent kinetics equation was -dC/dt=0.000249[Eosin Y](0.78)[Fe(2+)](1.14)[H(2)O(2)](1.26). Meanwhile, this research also proved that oxalic acid could improve the photocatalytic efficiency in the solar-Fenton process.     

溶胶-凝胶法制备纳米Y2O3粉体

为了改善Y2O3粉体的分散性,提高其烧结活性,试验以三乙醇胺和氨水为凝胶剂,利用溶胶-凝胶方法合成了纳米级Y2O3粉体,采用差热/热重、X射线衍射、透射电镜研究了前驱体的组成、前驱体在不同的煅烧温度下的物相变化以及煅烧粉体的分散性.结果表明,前驱体的组成为Y2(OH)5.14(NO3)0.86H2O,在500℃保温2h可直接生成立方相的Y2O3,煅烧至1000℃保温2h得到了结晶度高、分散性好、平均粒径为50nm、近球形的YO纳米粉体;三乙醇胺的加入有利于提高YO粉体的分散性.     

CuCl14Pc/Y纳米复合材料的制备、表征及其催化性能的研究

用沸石合成法制备了ＣｕＣｌ_１４Ｐｃ/Ｙ分子筛纳米复合材料(简称为ＣｕＣｌ_１４Ｐｃ/ｎａｎｏ－Ｙ),考察了合成条件对纳米复合材料的粒度影响．用ＸＲＤ、ＩＣＰ、ＴＧ－ＤＴＡ、ＴＥＭ、ＦＴＩＲ、ＵＶ－ｖｉｓ及催化反应等对其性能作了表征．结果表明:铜酞菁(ＣｕＣｌ_１４Ｐｃ)经过水热晶化后,部分被分装在纳米Ｙ型分子筛的空腔中,其催化氧化性能较普通ＣｕＣｌ_１４Ｐｃ/Ｙ分子筛复合材料有很大提高．     

CuCl14Pc/Y纳米复合材料的制备、表征及其催化性能的研究

在沸石合成法制备了CuCl14Pc/Y分子纳米复合材料（简称为CuCl14Pc/nano-Y)，考察了合成条件对纳米复合材料的粒度影响，用XRD、ICP、TG－DTA、TEM、FTIR、UV－vis及催化反应等对其性能作了表征，结果表明，铜酞菁（CuCl14Pc)经过水热晶化后，部分被分装在纳米Y型分子筛的空腔中，其催化氧化性能较普通CuCl14Pc/Y分子筛复合材料有很大提高。     

Mg65CU20Zn5Y10多孔非晶的制备及性能

为提高镁基非晶合金的塑性应变能力,采用水冷铜模浇铸-拔丝造孔法制备了Mg65Cu20Zn5Y10多孔非晶合金,对Mg65Cu20Zn5Y10多孔非晶合金的组织、热稳定性和压缩性能进行了研究。结果表明,采用多孔芯水冷铜模制备出了直径6mm、长24mm的Mg65Cu20Zn5Y10多孔非晶合金;与镁基非晶合金相比,孔结构对其热稳定性没有影响;Mg65Cu20Zn5Y10多孔非晶合金在低应力作用下的塑性应变可达40%;Mg65Cu20Zn5Y10多孔非晶合金的断裂形貌呈脉状花样,属韧性断裂。     

SiC晶须增韧Al_2O_3及ZrO_2（Y_2O_3）基陶瓷复合材料的抗热震行

采用三点弯曲及扫描电镜等方法研究了ＳｉＣｗ／Ａｌ２Ｏ３、ＳｉＣｗ／ＺｒＯ３（Ｙ２Ｏ３）及ＳｉＣｗ／Ａｌ２Ｏ３＋ＺｒＯ２（Ｙ２Ｏ３）陶瓷复合材料的抗热震性．结果表现ＳｉＣｗ的加入使Ａｌ２Ｏ３、ＺｒＯ２（Ｙ２Ｏ３）以及Ａｌ２Ｏ３＋ＺｒＯ２（Ｙ２Ｏ３）基体的抗热震性显著提高，Ａｌ２Ｏ３陶瓷基复合材料的抗热震性明显优于ＺｒＯ２（Ｙ２Ｏ３）陶瓷基复复合材料．同时发现在Ａｌ２Ｏ３十ＳｉＣｗ材料基础上再加入少量ＺｒＯ２（２Ｙ）颗粒（１０Ｖｏ１％），也可进一步提高Ａｌ２Ｏ３＋ＳｉＣｗ材料的抗热震性．