There are 2 kinds of scheme for pre-treatment technique of cottonseed.
The first kind is traditional technique. We use cleaning, husking, shelling, cooking and pre-manufacturing. Simple technological process:

scrap seperation→clean oil →filtration→clean crude oil→refining
                                         ↑oil                     ↑oil
cotton seed →cleaning→husking→seperation of shell and kernel →germ flattening→cooking→preprocessing→cake→leach workshop→
↓shell ↑kernel        
    shell →secondary seperation of shell and kernel →packaging of shell

The 2nd technique is developed in recent years. It has advantages of high protein content of dregs, fine color and light color of crude oil.