| 摘要 |
1471162 Ion-exchange HOOGOVENS IJMUIDEN BV 3 Oct 1974 43015/74 Heading B1J In a process involving the step of passing a liquid upwardly through a bed of partioulate solid material in a chamber so as to cause a two-phase reaction to take place, wherein the said solid material in the absence of flow would sink through the liquid and the chamber is so shaped and the flow rate is such that, substantially throughout the time that the reaction is proceeding, plug flow is approximated through the chamber, the said flow rate is at least as high as the minimum flow rate required to hold the solid material against a barrier located above it as a single body compacted throughout its volume in the absence of any barrier in the chamber immediately below said body. The process is exemplified by the desalination of brackish water in which water already treated by cation exchange is treated with a weak base ion exchange resin which is regenerated with NaOH solution. |
