Environmental life-cycle inventory of detergent-grade surfactant sourcing and production

Life-cycle inventories were compiled to characterize natural resource requirements and environmental emissions associated with the sourcing and production of selected, detergent-grade surfactants and surfactant feedstocks. Petrochemical surfactant types examined were linear alkylbenzene sulfonate, alcohol sulfate (AS), alcohol ethoxylate (AE) and alcohol ethoxylate sulfate (AES). Oleochemical surfactants derived from palm oil, palm kernel oil and inedible tallow were AS, AE, AES and (for palm oil and tallow) methyl ester sulfonate. It was determined that natural resource requirements were primarily related to the source of feedstock and secondarily to surfactant type. Likewise, the composition and mass of atmospheric, aqueous and solid emissions were principally determined by feedstock source. Energy requirements varied as a function of both feedstock and surfactant type. The inventories do not support fundamental shifts in surfactant usage or feedstock sourcing on the basis of environmental concerns, as no single surfactant or feedstock was identified as superior across all resource and emissions criteria examined. The data provide baselines for evaluating opportunities for resource optimization, pollution prevention and waste minimization within each production technology surveyed.     

锅炉等离子点火技术的应用及燃油系统选择

适用于贫煤、烟煤、褐煤,可连续运行的多根碳棒等离子点火技术,较前苏联采用银棒等离子点火技术具有造价低、使用寿命长等优点。以包头第二热电厂为例,对采用等离子点火技术前后的运行情况分析比较,经济效益可观。针对丰镇电厂三期2×600MW机组,设计采用等离子无油点火技术,对燃油系统进行了优化选择,简化了油罐设置。工程具有显著的经济效益和环境效益。     

异步轧制对二次再结晶取向硅钢磁性能的影响

研究了异步轧制条件下不同厚度的二次再结晶取向硅钢成品的磁性能的变化,找到了硅钢磁性能与成品厚度和异步速比之间的关系.     

环保耐燃液压油在KR脱硫装置上的应用

针对武钢二炼钢厂1号KR液压系统磷酸酯液压油的改型问题,介绍如何选择环保耐燃液压油以及改型替换时的工作程序。     

旋转管式膜器处理含油废水的研究

用常规方法处理乳化油污水比较困难,存在不同的问题,膜分离技术处理乳化油污水具有分离精度高,无二次污染,过程无相变等优点。     

硅微条探测器

硅微条探测器的位置分辨率可好于σ＝1．4μm，这是任何气体探测器和闪烁探测器很难作到的。主要介绍硅微条探测器的特点、结构、工作原理及其在近年来的发展和在高能物理、核医学等领域应用概况。     

排气截油阀及其在全密封配电变压器上的应用

介绍了一种新的变压器组件——排气截油阀及其结构、原理和应用，对其经济效益进行了分析。     

施耐德电气在石油钻机电传动系统控制回路中的应用

介绍了施耐德电气产品在石油钻机电传动系统控制回路中的应用,给出了控制回路框图并且说明了施耐德电气产品在目前石油钻机电传动系统中的作用和地位。