steam refining

steam refining

[′stēm ri′fīn·iŋ]
(chemical engineering)
A petroleum refinery distillation process, in which the only heat used comes from steam in open and closed coils near the bottom of the still; used to produce gasoline and naphthas where odor and color are of prime importance; where open steam is used, it is known as steam distillation.
References in periodicals archive ?
In most of the cases the refining palm oil is done by chemical/alkali physical or steam refining.
Physical or steam refining is widely practiced in Malaysia.