煤粉气力输送在铜镍冶炼厂的应用

根据铜镍冶炼厂煤粉采用正压气力输送的实例,参照相关规范,采用安全技术,从设计着手排除输送系统内煤粉静电起火、自燃起火的物质条件。排除煤粉和气体混合物点燃能降低的物质条件。从设计上排除煤粉输送系统爆炸事故发生的其它物质条件。在使用浓氮作惰化气流载体时,必须采取防止浓氮窒息和保护人身安全的技术措施。针对气力输送终端气固分离的技术环节,提出了采用旋风子替代输送管路"终端箱"的改进设计方案。

Application on Pneumatic Conveying of Pulverized Coal in Copper and Nickel Smelter

According to the instance of positive pressure pneumatic conveying of pulverized coal in copper and nickel smelter,consulting with relevant norms,adopting security technologies,the material conditions to cause transport system coal powder electrostatic fire and spontaneous combustion are excluded commenced with design.Pulverized coal and gas mixtures excluding lighting can reduce the material conditions.Pulverized coal conveying system is designed to exclude the other physical conditions to explosion incidents.While working with concentrated nitrogen as inerting air carrier,the technical measures to prevent concentrated nitrogen asphyxia and personal safety must be taken.For the terminal for pneumatic conveying technique for gas-solid separation,substitution of cyclone separator pipeline ＂terminal box＂ improvement of the design is proposed in this article.