DEDS-10双子表面活性剂的性能研究

合成了一种新型的DEDS-10双子表面活性剂,用红外光谱对所合成化合物的结构进行了初步表征。DEDS-10的临界胶束浓度cm c为0.47 mmol/L,γcm c为34.5 mN/m,A lC l3、CaC l2和NaC l可以使γcm c降低3.6~1.1 mN/m,其cm c值大约为纯水溶液cm c值的1/5~1/3;加入乙醇,可增加其表面活性,在乙醇的浓度为0.22 mol/L时,其表面张力为30 mN/m左右。与阳离子表面活性剂DTAB和非离子表面活性剂曲拉通X-100复配,可以大幅度地降低cm c和γcm c值,与阴离子表面活性剂TLS复配时,cm c降低,cγm c略有增加。     

电磁屏蔽涂料的发展现状及趋势

电子产品的日益普及使得电磁干扰成为一个突出问题,应用电磁屏蔽涂料是消除电磁干扰简单而有效的方法,本文介绍了电磁屏蔽涂料的组成、效能评价方法、技术思想、存在的问题以及发展趋势。复合型以及水性屏蔽涂料具有广阔的研发前景,高效能、宽频带、寿命长的电磁屏蔽涂料将会受到市场欢迎。     

ZnFe2O4高温煤气脱硫剂的再生

在热天平上对自制的ZnFe2O4脱硫剂进行了再生工艺研究，考察了再生温度、O2浓度对ZnFe2O4脱硫剂再生性能的影响；进行了多次硫化、再生循环实验，并与加入玻璃粉的样品进行了比较。结果表明，700℃下氧含量2.0%(vol)时再生可以获得良好的再生率和二次硫化反应活性；玻璃粉的少量加入，会改善脱硫剂长期使用的稳定性，但反应活性有所下降。     

尿素装置液相浓度在线自动检测软件的研究

为了改善尿素装置先进的控制和落后的人工检测物料浓度之间的矛盾，运用化工热力学原理，以及热力学模型组合求解法，研制了液相浓度实时检测软件。并开发了多种软件以适应各类尿素流程（水溶液全循环法、ＣＯ２汽提法、氨汽提法）的需要     

天津爱普生有限公司油墨废水处理方案及运行情况

天津爱普生有限公司废水治理工程设计水量5t／d，废水浓度高，水质、水量变化大。采用水解酸化-生物接触氧化处理工艺对天津爱普生有限公司废水进行处理，进水CODCr，平均为2500mg／L左右，CODCr去除率≥90％，排水各项指标均符合国家污水综合排放标准GB8978-1996的二级排放要求。     

Alternative hydrocarbon solvents for cottonseed extraction

Hexane has been used for decades to extract edible oil from cottonseed. However, due to increased regulations affecting hexane because of the 1990 Clean Air Act and potential health risks, the oil-extraction industry urgently needs alternative hydrocarbon solvents to replace hexane. Five solvents,n-heptane, isohexane, neohexane, cyclohexane, and cylopentane, were compared with commercial hexane using a benchscale extractor. The extractions were done with a solvent to cottonseed flake ratio of 5.5 to 1 (w/w) and a miscella recycle flow rate of 36 mL/min/sq cm (9 gal/min/sq ft) at a temperature of 10 to 45°C below the boiling point of the solvent. After a 10-min single-stage extraction, commercial hexane removed 100% of the oil from the flakes at 55°C; heptane extracted 100% at 75°C and 95.9% at 55°C; isohexane extracted 93.1% at 45°C; while cyclopentane, cyclohexane, and neohexane removed 93.3, 89.4, and 89.6% at 35, 55, and 35°C, respectively. Each solvent removed gossypol from cottonseed flakes at a different rate, with cyclopentane being most and neohexane least effective. Based on the bench-scale extraction results and the availability of these candidate solvents, heptane and isohexane are the alternative hydrocarbon solvents most likely to replace hexane. Presented in part at the AOCS Annual Meeting & Expo, Atlanta, Georgia, May 1994.     

高强度超轻填料──氧化铝空心微珠

介绍氧化铝空心微珠的用途、性能及生产过程。     

一种新型偶联剂的应用研究

研究了新型偶联剂(XOL-4)用于不同填料的效果。选用滑石粉、CaCO_3、SBS三种不同类型的填料,以不同用量的XOL-4进行表面处理来填充树脂,考察了所得填充体系的拉伸强度、弯曲弹性模量、热变形温度等性能,同时与钛酸酯偶联剂和铝酸酯偶联剂进行了比较。     

炭粒床高效工业除尘装置的设计与开发

The new dust removal technical route using the carbon-granular bed filter,packed of carbon particles with appropriate grade derive from an online-process vibration sieve,to replace the traditional baggy filter had been developed successfully for capturing the micro-carbon dusts produced from pulverization of petroleum coke,and the green close loop of carbon materials is thus completed in the combined pulverizing and classifying system and pulverized carbon dust removal process.The high dust removal efficiency greater than 99%,low outlet dust concentration less than 100 mg.m-3,low pressure drop through dust filtration chamber less than 980 Pa,simple and easy design,and flexible and stable operation were achieved also with the carbon-granular bed filter in both bench and industrial scale operations.     

利用ADCP回波强度估算河流悬移质含沙量的应用研究

通过简要介绍利用声学多普勒水流剖面仪(ADCP)回波强度估算悬移质含沙量的基本原理,结合梧州水文站的应用实例,利用ADCP的回波强度数据和现场采集的水样含沙量建立相关关系,根据相关关系由回波强度反演估算的水体悬移质含沙量验证了利用ADCP的回波强度估算悬移质含沙量的可行性。应用于梧州水文站的实践表明,左河道推算的系统误差为-0.1%,右河道推算的系统误差为1.5%。这种方法具有不扰动流场、测量剖面同步性较好、数据空间分辨率较高的优点,与传统的取样过滤称量法相比,计算效率显著提高。