发明授权
US4427531A Process for deasphaltenating cat cracker bottoms and for production of anisotropic pitch 失效
脱脂猫裂化器底部和各向异性间距的生产工艺

Process for deasphaltenating cat cracker bottoms and for production of
anisotropic pitch
摘要:
A process for removing asphaltenes present in cat cracker bottoms is disclosed. Basically, the process requires removal of at least a portion of the polynuclear aromatic oils present in the cat cracker bottom, for example, by vacuum stripping, whereby the asphaltenes are thereafter capable of being extracted from the so-treated cat cracker bottom. Heat soaking of the asphaltene-free cat cracker bottom results in a pitch particularly suitable for carbon artifact manufacture.
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