2016年12月21日星期三

crude oil refining , oil refinery






Refining , as a specific process, deals with free fatty acid removal, with or without degumming as a single step operation, the importance of the bleaching step can not be overstated, the bleaching process is to remove oxidative breakdown products, and the degree or level of treatment should be consistent with that objective.

没有评论:

发表评论