Optimization of alkali refining process for cottonseed miscella
In order to ensure the stable production of cottonseed oil and improve the quality of cottonseed oil,with the miscella concentration,excess alkali quantity,mass fraction of alkali solution and reaction time as experimental factors,the soap content,color(R value)and refining yield of cottonseed oil as investigation indexes,the orthogonal experiment was designed to optimize the alkali refining process conditions of cottonseed miscella.The results showed that the optimal conditions were miscella concentration 85%,excess alkali quantity0.8%,mass fraction of alkali solution 12.69%(18°Bé),and reaction time 20 min.Under the optimal conditions,the acid value of cottonseed oil actually produced in the production line was reduced to below 0.2 mgKOH/g,the peroxide value was reduced to 0.020 g/100 g,the R value could be stably controlled below 4.8,and the refining yield was 95.92%,which was better than the small-scale test.
NETL
NSTL
万方数据
