共查询到20条相似文献,搜索用时 109 毫秒
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锦化化工(集团)有限责任公司引进日本旭硝子公司的生产技术和相关设备,生产规模为8万t/a;离子膜电解槽槽型为AZEC-F2(6,7),共52台,膜型号F-893全氟磺酸羧酸复合膜.介绍了电解槽的主要结构、组装方式、特点、运行指标及运行中出现的异常现象. 相似文献
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F- 41 1 2膜是我厂 期离子膜装置所采用的膜。自 1 999年 6月 1 7日通电运行至 2 0 0 1年 6月1 8日停运整整运行 2 4个月。为了使 期膜使用寿命延长 ,发挥出更好的经济效益。总结过去 ,着眼未来显得十分必要。现将 F- 41 1 2膜在我厂的运行情况作一介绍 ,以便同行参考。1 两 相似文献
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在离子膜电解槽进行膜极距改造的同时,分别使用了F-8080膜和另一公司的离子膜。对比改造后不同电解槽使用不同膜的电压曲线和氯气纯度,说明使用不同膜的氯气纯度和电流效率都相差不多,但是F-8080膜在电压上有较大的优势,节电效果明显。 相似文献
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齐化集团有限公司采用日本旭化成复极强制循环槽工艺生产烧碱。Ⅱ期、Ⅲ期开车时均使用旭化成公司Apciple-F-4112(简称F-4112)离子膜,已使用了13年,效果较好。2002年Ⅰ期离子膜装置复产开车时继续采用旭化成公司新电解糟及F-4112型新膜,但在运行37天停车做膜试漏时发现膜泄漏,之后每次停车都发生膜漏。采取多种技术措施,效果都不太理想。日方因此做出了赔偿,并推荐了新产品Apciple-F-4602(简称F-4602)膜。2004年4月,齐化集团有限公司Ⅱ期更换新槽时,采用了F-4602型号膜,现已运行17个月。两种膜的操作条件为:二次盐水Ca2 ≤0.02 mg/L;pH… 相似文献
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1 概况天津化工厂电解分厂单极离子膜车间于1994年11月开工,现正使用第2批离子交换膜(日本旭硝子公司F-893型)。因第2批膜使用情况不理想,我厂多次与日方交涉,日方几次来人查看,但由于各种一手材料(尤其是旧膜分析数据)全部由日方提供,需我厂自己掌握各数据和材料。我厂技术中心与电解分厂联合,1999年6月22日派人去北京化工大学,带1张旧膜(338#槽下,使用45个月)进行电镜分析,做膜两侧表面元素测定。2 分析结果北京化工大学电镜室设备为扫描电镜(250MK3型),可分析大部分元素,误差10%以下,但有几处限制:只能分析出Na以后(包括Na)的元… 相似文献
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介绍了杜邦NX2030离子膜运行情况,分析了影响膜长周期运行的因素。结合膜运行六年多的概况,总结了生产运行中管理和操作要点,为进一步维护运行好离子膜提供了参考。 相似文献
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1 前言 我厂自1986年6月10日离子膜法制碱生产装置建成投产,至今已正常运行10多年。离子膜先后共使用了5批,其中日本旭化成公司的3批,其牌号分别是FB—194、FB—271和FB—4111膜;美国杜邦公司的2批,牌号是NE—966和NE—966TX膜。通过生产实践,笔者就操作方面的有关条件与离子膜性能的关系,谈点粗浅的认识,旨在与同行进行相互交流和学习。 相似文献
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The modes and activities of the interaction of DNA and water‐soluble polymeric Schiff base–nickel complexes, which have been prepared by polymeric analogous reaction, have been discussed according to absorption spectra, circular dichroism spectra, and fluorescent probe method. It is indicated that polymeric matrix effect and increasing solubility in water can increase the interaction of these water‐soluble polymeric metal complexes with DNA. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 887–893, 2002; DOI 10.1002/app.10000 相似文献
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Sighild Lemarchant Mlissa Sourioux Juliette Le Douce Alexandre Henriques Noëlle Callizot Sandrine Hugues Mlissa Farinelli Yann Godfrin 《International journal of molecular sciences》2022,23(16)
NX210c is a disease-modifying dodecapeptide derived from the subcommissural organ-spondin that is under preclinical and clinical development for the treatment of neurological disorders. Here, using whole-cell patch-clamp recordings, we demonstrate that NX210c increased α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR)- and GluN2A-containing N-methyl-D-aspartate receptor (GluN2A-NMDAR)-mediated excitatory postsynaptic currents in the brain. Accordingly, using extracellular field excitatory postsynaptic potential recordings, an enhancement of synaptic transmission was shown in the presence of NX210c in two different neuronal circuits. Furthermore, the modulation of synaptic transmission and GluN2A-NMDAR-driven signaling by NX210c restored memory in mice chronically treated with the NMDAR antagonist phencyclidine. Overall, by promoting glutamatergic receptor-related neurotransmission and signaling, NX210c represents an innovative therapeutic opportunity for patients suffering from CNS disorders, injuries, and states with crippling synaptic dysfunctions. 相似文献
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为了增强等规聚丙烯(i PP)的透明性能和冲击性能,采用物理共混方法,将弹性体聚苯乙烯、乙烯-丁烯共聚物、聚苯乙烯的三嵌段共聚物(SEBS)与NX8000K成核剂配合使用对i PP进行改性。通过差示扫描量热分析(DSC)和X射线衍射分析(XRD)、偏光显微镜分析(POM)等方法研究了SEBS对iPP/NX8000K组合物的结晶行为、透明性能和力学性能的影响。结果表明:在NX8000K含量为0.6%(以i PP和SEBS的总质量为基准,下同),SEBS含量为40%(以i PP和SEBS的总质量为基准,下同)时,i PP/NX8000K/SEBS三元组合物的雾度为24.9%,远远小于i PP(79.6%);冲击强度增至50.7 kJ/m2,与i PP相比提高了10倍。 相似文献
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This study reports usage of laboratory prepared zirconia samples (normal dried zirconia (ZD383), zirconia calcined at 893 K (ZC893), zirconia sulfated and calcined at 893 K (SZC893)) as adsorbents for the removal of sulfur from model oil (dibenzothiophene, DBT in iso-octane). Bulk densities of adsorbents were found to be in the range of 0.896–0.987 kg/m3. Optimum adsorbent dose was found to be 10 g/l. The adsorption of DBT on zirconia based adsorbents was found to be gradual process with quasi-equilibrium condition reached in 22 h. Brunauer–Emmett–Teller (BET) isotherm best represented the equilibrium adsorption data. The heat of adsorption and change in entropy for DBT adsorption onto zirconia based adsorbents were found to be −165.3 (ZD383), −125.5 (ZC893), −96.7 (SZC893) kJ/mol, and −509.9 (ZD383), −379.4 (ZC893), −284.1 (SZC893) J/mol K, respectively. 相似文献
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Distribution of TX114 between coacervate and aqueous phases in clouding of various initial TX114 concentrations was studied. Effects of temperature and salinity (Na2SO4) on the distribution of TX114 concentration were also investigated. Differing from the nonionic surfactant C12E10, the distribution of TX114 is sensitive to the temperature, and it is observed that the TX114 concentration in the aqueous phase (Caq) does not depend on the initial TX114 concentration apparently at 45℃, and the Caq decreases with an increase of NazSO4 concentration. Low initial TX114 concentration in unclouded solutions, high Na2SO4 concentration, and temperature are suggested to control the surfactant loss in large-scale cloud point extraction applications. 相似文献
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Su‐Mei Huang Jiunn‐Jer Hwang Li‐Huei Lin Hsin‐Jiant Liu Tsung‐Che Yeh 《应用聚合物科学杂志》2010,116(4):2227-2233
Nonylphenols are water‐soluble surfactants that are used extensively in industry and are found in many consumer products. Nonylphenol polyoxyethylene ether (known commercially as TX‐100), which is one of the most popular members of this family, has a detrimental effect on the environment. Adding chitosan to a solution of TX‐100 reduces the amount of surfactant required while maintaining its surface activity. We evaluated the interfacial properties, including the surface tension, contact angle, and particle size, as well as the fluorescence and Fourier transform infrared spectra of various test solutions prepared from three stock solutions: (1) chitosan dissolved in dilute acetic acid, (2) TX‐100 dissolved in deionized water, and (3) a mixed chitosan/TX‐100 solution. Previous results revealed that low concentrations of TX‐100 are relatively harmless to the environment; in this study, we found that its surface activity at a higher concentration was equal to that of its chemical mixture with chitosan. In addition, we found that the presence of chitosan improved the stability of emulsions of TX‐100. The micellar particles were small, and the stability of the emulsion was maximized at a TX‐100 to chitosan ratio of 7 : 3. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 相似文献
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介绍了TX1型高效吸油剂在脱硫剂中的埋包实验情况,并与工业焦炭和催化剂载体(氧化铝球)的吸油效果进行了比较。结果表明,TX1型高效吸油剂具有吸油率高、强度高、孔隙率大、价格适中、吸油不吸硫等优点。在全低变流程的过滤器中装入TX1型高效吸油剂,过滤后的气体含油量几乎为零,使变换炉的阻力不因机械杂质和油污而上升。 相似文献