加氢装置脱C_5系统的腐蚀与防护

对中国石油天然气股份有限公司独山子石化分公司乙烯裂解加氢装置脱C_5系统的腐蚀现状进行了调查和腐蚀机理分析,查明腐蚀部位主要集中在回流管线的弯头及焊缝部位,其特征为孔蚀。该公司经过实验室对比评价试验,筛选出了JYH-2003和SL-60两种缓蚀剂并于2005年4月进行了工业应用试验。结果表明:JYH-2003在流量为1.1kg/h左右的情况下,可使回流罐冷凝水的pH值稳定在8.0～10,并使系统铁离子质量浓度稳定在100mg/L左右,使腐蚀得到了有效控制。

高压加氢工艺阀门国产化研究与应用

高压加氢工艺阀门主要应用于加氢精制和裂化等高温、高压的工况状态。一直以来,高压加氢阀门被国外品牌垄断。为了解决“卡脖子”瓶颈技术,需要加快对国内高压加氢阀门的研发及工程化应用。基于此,分析了国产高压加氢工艺阀门的工况参数、技术内容与加氢腐蚀破坏机理,深入研究了高压加氢阀门的技术特点、性能要求与材质选择,希望对关键工艺、检测和质量体系提供参考性建议。

重整预加氢装置的腐蚀及防护

本文简述了重整预加氢装置的腐蚀特征,讨论了在H_(2)S+HCl+H_2O+NH_3气氛中设备腐蚀的防护方法,提出采用脱氯、注缓蚀剂等综合治理方法来解决该装置的设备腐蚀问题.

Successful Commercial Test of Novel Desulfurizing Agent at SINOPEC Shanghai Gaoqiao Branch Company

The novel JX-7 jet fuel desulfurizing agent has been successful tested in commercial scale on the jet fuel hydrotreating unit at the SINOPEC Gaoqiao Branch Company,while delivering a jet fuel with its silver strip corrosion indicator meeting the military jet fuel standard.

A Sacrificial Layer Etching Method Applied in Surface Micromachining Using Agitated BHF and Glycerol Solution

A modified buffered-HF solution with NH4 F ： glycerol ： HF（4 ： 2 ： 1）is studied. With the implementation of a heating and agitating mechanism, this method is applied in a sacrificial layer etching scheme that increases the selectivity between silicon dioxide and aluminum. The etching rates of SiO2 and Al as a function of solution temperature are determined. Moreover,the effects of adding glycerol and agitating the etchant are examined and compared with this method. Finally, this method is tested on an actual device, and its efficiency is scrutinized.