会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Air separation
    • 空气分离
    • US5660059A
    • 1997-08-26
    • US674294
    • 1996-07-01
    • Paul Higginbotham
    • Paul Higginbotham
    • F25J3/04
    • F25J3/042F25J3/04084F25J3/0409F25J3/04296F25J3/04339F25J3/04345F25J3/04393F25J3/04412F25J3/04678F25J2235/58F25J2240/42F25J2250/20Y10S62/94
    • An air separation plant and process in which a first stream of compressed feed air is introduced in vapour state into a higher pressure rectification column and separated therein into nitrogen vapour and oxygen-enriched liquid air and a flow of the nitrogen vapour is condensed in condenser-reboiler. A flow of the oxygen-enriched liquid air is separated in a reboiled lower pressure rectification column into nitrogen-rich and oxygen-rich fractions. A first flow of the condensed nitrogen is employed as reflux in the higher pressure rectification column and a second flow of the condensed nitrogen is employed as reflux in the lower pressure rectification column. A flow of compressed feed air is expanded in expansion turbine with the performance of external work so as to create refrigeration for the process. Products of the separation include one or both of a gaseous nitrogen product taken from the higher pressure rectification column and a liquid nitrogen product. A second stream of compressed feed air is liquefied. At least a part of the liquefied second air stream is vaporised in vaporiser at a pressure less than that at the top of the higher pressure rectification column by indirect heat exchange with a part of the said flow of nitrogen vapour, and the resulting vaporised air is warmed, is recompressed, and is mixed with feed air upstream of a location from where the first stream is taken.
    • 一种空气分离装置和方法,其中将第一压缩进料空气流以蒸汽状态引入高压精馏塔中并分离成氮蒸汽和富氧液体空气,并将氮蒸汽流在冷凝器中冷凝, 再沸器 在再沸的低压精馏塔中将富氧液体空气流分离成富氮和富氧馏分。 将冷凝氮气的第一流作为高压精馏塔中的回流,在低压精馏塔中采用第二冷凝氮气作为回流。 随着外部工作的进行,膨胀涡轮机中的压缩进料空气流扩张,从而为该方法产生制冷。 分离产物包括从高压精馏塔中取出的氮气产物和液氮产物中的一种或两种。 第二流的压缩进料空气被液化。 液化的第二气流的至少一部分在蒸发器中以比上述高压精馏塔顶部的压力小的压力通过与所述氮蒸汽流的一部分进行间接热交换而蒸发,所得蒸发的空气为 加热,再压缩,并与进料空气混合,进料空气在第一个流被捕获的位置上游。