Sorption of water vapor by chemically modified polyamide fibre

Conclusions Sorption and desorption isotherms of water vapor by chemically modified PCA fibre have been analyzed.It has been shown that the modified PCA fibre absorbs water vapor like cotton fibre over a wide range of variation in relative humidity.The elevated sorptive capacity as compared with Kapron fibre is explained by an increase in the number of active hydrophilic functional groups and volume of sorbing pores.Translated from Khimicheskie Volokna, No. 1, pp. 20–21, January–February, 1984.     

铁路废弃聚酰胺部件回收再生利用

通过采用长度为4.5 mm、直径为10 μm的玻璃纤维和马来酸酐接枝聚烯烃弹性体（POE⁃g⁃MAH）增韧剂且添加量为10 %时所制得的再生聚酰胺部件产品尺寸和性能指标满足要求,且部件具有良好的尺寸稳定性等,部件经组装疲劳性能测试后未发生损坏,各项组装性能均满足要求。结果表明,废弃聚酰胺部件经过收集、破碎、清洗、改性等工序后可成为良好的可再生资源,可继续应用于铁路市场。     

渣油加氢失活催化剂回收与再利用的研究进展

近年来,渣油加氢处理规模不断提高,由此产生的渣油加氢失活催化剂量随之增长。渣油加氢失活催化剂的回收与再利用能够减少环境污染,提高炼油厂经济效益。围绕渣油加氢失活催化剂的再生使用、失活催化剂在其他领域的利用以及从失活催化剂中回收有价金属等方面探讨提升失活催化剂附加值的方法。     

氯碱生产工艺中废水回收工艺改造

介绍了新疆中泰化学股份有限公司华泰公司氯碱分厂根据废水来源,按照“高水高用、低水低用、阶梯利用”的原则采取措施使废水得到再利用,控制了废水排放量。     

胜利油田采出水处理系统药剂配伍性研究

通过对油田常规采出水处理常用缓蚀剂、杀菌剂、阻垢剂的性能评价及配伍性研究,确定了不同药剂间的影响规律,找出了不同药剂间的协同效应与投加顺序的关系,提高了水处理药剂的作用效果,在保证水处理效果的前提下,可降低水处理药剂成本30%左右。     

Electrodialysis for bleach effluent recycling in kraft pulp production: Simultaneous control of chloride and other non-process elements

In the United States, more than 50 million tons of kraft pulp are produced per year. A strong effort by kraft pulp producers has been under way for several years to reduce water use. The in-process recycling of the acidic bleach effluent carrying metals, transition metals, calcium, and often large amounts of chloride is still a significant challenge. The simultaneous selective removal of chloride, and detrimental cations from the acidic bleach effluent of bleached kraft pulp mills by electrodialysis was investigated. The laboratory results with actual effluents show that very good removal levels can be achieved in an economical process. The chloride removal from acidic bleach effluent will aid significantly in keeping chloride levels acceptable in the recovery cycle.