The method for removing nitrogen oxides in the effluent gas from manufacturing nitric acid by using acidic urea solution as an absorbent to absorb the nitrogen oxides is introduced.
2
诸如尿素和胍的离液剂能够将一些疏水化合物带入水溶液中。
Chaotropic agents, such as urea and guanidine are capable of bringing some hydrophobic compounds into aqueous solutions.
3
但在生产中要妥善解决尿素浓溶液易结晶堵塞管道以及尿素在高温下易生成缩二脲的问题。
However these troubles of concentrated urea liquor crystallizing and blocking pipe, as well as urea changing into biuret at high temperature should be avoided.