抛丸处理在钢铁冷锻加工中的应用

钢铁冷锻加工中的磷化工序一般采用酸洗法去除毛坯上的氧化膜。现介绍用抛丸处理工艺替代酸洗方法,可以大幅度减少工业污染,降低生产成本,提高工艺质量。     

关于不锈钢酸洗废水处理的技术分析

随着社会经济的快速发展,不锈钢酸洗废水处理技术成为了当前的一项重要技术参数。本文旨在分析当前不锈钢酸洗废水的相关处理技术,从多种技术综合的应用出发,围绕当前工业发展的实际需要,多角度的分析不锈钢酸洗废水的技术,实现整体技术的全面运用。     

硫酸酸洗废水处理与回用工艺设计

通过对吉林某汽车标准配件厂的废水进行处理及回用研究,设计了该厂酸洗废水处理及回用工艺,工程建设投资86.0万元,运行费用331 400元/a,挽回资金流失1 463 550元/a,当年即可回收投资并创造可观的经济效益.通过加酸冷冻结晶法实现了酸洗废水中废酸回用的目的,并且有效地回收了FeSO4·7H2O,以进一步用于聚合铁等其他产品的生产,达到废物利用、生产用水零排放的目的.     

吹吸罩在大型酸洗槽上的应用研究

大型酸洗槽的酸雾收集处理是很多企业污染治理的难题,不仅造成环境污染,而且直接威胁操作人员的健康,为解决此问题,我们利用吹风射流作用将有害物质输送到排风罩口附近并被排走的原理,通过研究吹吸气流的合理设计和计算方法,研制和设计了应用于大型酸洗槽的酸雾收集处理吹吸罩装置,实现了在减少抽风量,降低动力消耗基础上,有效提高酸雾收集效率,并且便于操作,应用前景广阔。     

Odor fading in natural gas distribution systems

Since natural gas is odorless, to assure the customer safety, odorants are added to it to alarm the consumer in the case of a gas leak. Although the odorization is a common practice in natural gas distribution systems, odor fading has been reported in pipelines, which is a great safety risk. This paper summarizes results of experiments conducted to investigate possible chemical and physical mechanisms responsible for odor fading. In these experiments, X-ray photoelectron spectroscopy (XPS) and gas chromatography were used to check the possible interactions of tertiary butyl mercaptan (TBM) as odorant with the pipe material. Evidences of chemisorption, adsorption and desorption of TBM on the iron oxide inside the pipe were observed. It was found that by increasing pressure, rusted surface of the pipe, and temperature or by decreasing the gas flow rate and odorant concentration the mercaptan removal was increased.