A method is described for refrigerant supply of a low-temperatureseparation stage in a plant for producing olefins from hydrocarbon-containing feed (olefin plant).
本发明描述了在从含有烃类的进料制造烯烃的装置(烯烃装置)中的低温分离阶段的制冷供应的方法。
2
The purification methods of phosphine include adsorption method, lowtemperature distillation method and membrane separation method etc.
总结了磷化氢的精制方法，主要有吸附法、低温精馏法和膜分离法等。
3
Low reaction temperature has the advantages of easy separation of solid from liquid for the obtained material, saving heating steam and reducing ammonia volatilization.