生活垃圾中废塑料分选回收技术概述

近年来,废塑料在城市生活垃圾中占有相当大的比例,其含量正呈逐年上涨的趋势,因此对塑料进行分选和资源化利用势在必行。塑料分选技术是摆在我们中间的一项难题,目前生活垃圾废塑料的分选技术五花八门．由于在全国各地废塑料在垃圾中的还水量等因素的影响,现实中能实现废塑料的分选还不成熟。因此,研究一套适合废塑料的分选技术迫在眉睫。     

测定总氮中影响因素的探讨

本文研究了过硫酸钾氧化紫外分光光度法测定总氮的过程中,通过标准曲线、标准物质、具体试样的一系列测定探讨,发现试剂、实验用水、实验器皿、实验环境等对测定结果有很大影响。     

采掘业井工开采项目地下水环境影响评价相关问题探讨-以凯达煤矿项目为例

本文针对采掘业并工开采项目地下水环境影响评价的特点,根据在环境影响评价工作中的实践经验,以位于内蒙古自治区鄂尔多斯市准格尔旗境内的凯达煤矿为例,就地下水导水裂隙带、地下水影响范围、含水层、居民水井等问题具体分析、并结合产生的影响提出具体的防治措施.     

火电厂除尘器性能比较及应用分析

介绍了火电厂除尘器应用现状,论述了电除尘器、袋式除尘器和电袋复合式除尘器的原理及特点,分析了电除尘器和袋式除尘器存在的问题,强调了根据火电厂情况合理选择除尘器类型.     

烟气黑度的产生及处理方法

本文从原料、生产工艺、处理设备、企业管理等方面论述了烟气黑度超标的相关原因,针对具体情况提出了有针对性的解决方案,改进生产工艺、加强人员管理和设备投入等防治烟气黑度超标现象。     

GC/MS和GC/AED联用技术分析氯代邻羟基二苯醚类化合物的探讨

本文针对三氯新在脱氯反应过程中会产生多种二苯醚类化合物,提出采用GC/MS与GC-AED联用技术,对所有过程产物做出定性或定量分析,并通过实验证明其可行性.     

乌海市污染源在线监控系统应用现状及对策研究

本文结合乌海市污染源在线监控系统的日常管理工作实践,分析总结了乌海市污染源在线监控系统的安装、运行管理现状及存在的问题与不足并提出了相应的对策及建议。     

Insertable thin film thermocouples for in situ transient temperature monitoring in ultrasonic metal welding of battery tabs

Real-time monitoring and control of temperature in ultrasonic joining of battery tabs and coupons are important for the quality improvement and cost reduction of battery assembly. However, there have always been difficulties in accurate and real-time measurement of temperature by conventional sensors for practical implementation. In this study, an innovative method is developed to provide an enabling technology for the in situ transient temperature monitoring, which could provide reliable feedback signals for potential control of ultrasonic joining processes. Micro thin film thermocouples (TFTCs) were fabricated on thin silicon substrates, which were then inserted in the welding anvil as a permanent feature so that the sensors were always located about 100 μm directly under the welding spot during joining of multilayer Ni-coated Cu thin sheets for battery assembly. Good repeatability was demonstrated while a temperature rise of up to 650 °C was obtained due to the closeness of the sensors to the welding spot. The inserts with thin film sensors remained functional after welding experiments. This method has a great potential for in situ transient temperature monitoring, and thus the control of ultrasonic joining processes to realize a practical smart joining system.     

河南油田安全典型问题、险肇事件、事故原因分析及对策

系统分析了中国石化河南油田分公司近年来安全典型问题、险肇事件、事故的分布及产生原因,提出了针对性的应对措施。     

采用双螺杆泵安全输送液硫技术

分析了液硫输送液下泵的结构、运行状况及存在的安全问题,提出应用双螺杆泵输送液硫,使用证明双螺杆泵具有故障率低、检修费低、本质安全等优点。