上海LNG液氮储罐控制原理及改造

The Control Principle and Transformation of Liquid Nitrogen Tank of Shanghai LNG Company

在我国有很多小型化工厂,日常使用氮气量不大,所以大都没有设置专业生产氮气的装置,一般采用设置液氮储罐和环境气化器的方式,通过外购液氮存储,再气化后供各设备使用。文章以上海液化天然气有限责任公司的液氮存储和气化工艺为例,介绍液氮存储及其控制原理,在使用中存在较普遍问题及解决办法。

there aren＇t equipments used to produce nitrogen in many small plants in China because of their tiny amount requirement, By installing the liquid nitrogen tank and vaporizer, they can store liquid nitrogen through outsourcing and vaporize them if needed, through the example of the process of liquid nitrogen storage and vaporization process, the article introduces the Liquid Nitrogen storage and Control Principle, the problems and solutions as well.