高效回收氧氮资源的可变多循环冷能利用新工艺研究

针对某集团供氧系统应急保障能力不足、氧气放散量大、液氧汽化消耗蒸汽量过高、氮气应急和调峰备用欠缺的问题,以开发可变多循环冷能利用技术为核心,通过扩建液氧储槽和汽化系统、新建液氮储槽及汽化系统、构建氧氮冷能利用装置实现利用液氮的冷能液化氧气、利用氧气的液化潜热汽化氮气,推出高效氧气变负荷+氮气节能回收的新技术。新工艺最终实现了冷能的可变循环利用,大幅度提高氧氮资源利用率,减少蒸汽消耗,提高供氧系统的稳定性和液氮储存保障能力,可产生良好的经济效益。

New Technology of Variable Multicycle Cold Energy Utilization for Efficient Recovery of Nitrogen and Oxygen Resources

In view of the problems of insufficient emergency support capacity,large oxygen emission,excessive steam consumption by liquid oxygen vaporization,and lack of nitrogen emergency and peak shaving reserve in the oxygen supply system of a certain group,with the development of variable multi-cycle cold energy utilization technology as the core,a new technology of high-efficiency oxygen variable load+nitrogen energy-saving recovery was introduced by expanding the liquid oxygen storage tank and vaporization system,constructing the liquid nitrogen storage tank and vaporization system,and constructing the oxygen and nitrogen cold energy utilization device to realize the liquefaction of oxygen using the cold energy of liquid nitrogen and vaporization of nitrogen using latent heat of oxygen.The new process finally realizes the variable recycling process of cold energy,greatly improves the utilization rate of oxygen and nitrogen resources,reduces steam consumption,and improves the stability of oxygen supply system and liquid nitrogen storage guarantee ability,which can produce good economic benefits.