Design And Application Of Annular Centrifugal Extractors For BuNENA

Small-scale experimental production process of 2-(butyl-nitro-amino)ethyl nitrate (BuNENA) has been studied in this thesis. There are main works based on the washing and alkali washing process in the post-processing of BuNENA as follows:(1)The VB calculating program for structure parameters of annular centrifugal extractors has been developed.(2)Synthesize BuNENA as feed of organic phase, identify it by IR,MS,1H-NMR.(3)Obtain structure parameters of annular centrifugal extractors through the VB calculating program. Modified structure parameters of annular centrifugal extractors are as follows:length of rotor is 3.94cm, diameter of rotor is 2.07cm, radius of light phase weir is 0.35cm, radius of heavy phase weir is 0.55-0.60cm.(4)The hydraulic performance is studied in water-kerosene system. It shows that when the rotor's speed varies from 3000-4000r/min, annular centrifugal extractors are running stably at high level.(5)Apply amended annular centrifugal extractors to continous-running experiment of BuNENA. There is seven-stage cross-flow centrifugal extractor battery in the post-processing of BuNENA as follows:single-stage washing with ice-water, two-stage washing, three-stage alkali washing, single-stage washing. When the flow rate of organic phase is 75mL/min and the flow rate of both water phase is 60mL/min, the whole process runs stable, the production capacity can reach 1.5～2L/h, collected organic phase is clear without any carryover as its pH is 4, the production rate can be up to 88%.