C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 9/00 (2006.01) C10G 9/20 (2006.01)
Patent
CA 2567164
A process for cracking a heavy hydrocarbon feedstock containing non-volatile components and/or coke precursors, wherein a stripping agent is added to the feedstock to form an enhanced hydrocarbon blend which is thereafter separated into a vapor phase and a liquid phase by flashing in a flash/separation vessel, separating and cracking the vapor phase, and recovering cracked product. The stripping agent increases vaporization of the volatile fraction of the heavy hydrocarbon increasing the maximum feedrate capacity of the furnace.
L'invention concerne un procédé de craquage d'une charge hydrocarbonée lourde contenant des composés non volatils et/ou des précurseurs de coke. Ce procédé consiste à ajouter un agent de stripage à la charge en vue de former un mélange hydrocarboné amélioré, lequel est ensuite séparé en une phase vapeur et une phase liquide par vaporisation instantanée dans une cuve de vaporisation instantanée/séparation, à séparer et craquer la phase vapeur, puis à récupérer le produit craqué. L'agent de stripage permet d'augmenter la vaporisation de la fraction volatile de l'hydrocarbure lourd, ce qui augmente la vitesse d'alimentation maximale du four.
Annamalai Subramanian
Frye James M.
Mccoy James N.
Srivastava Alok
Stell Richard C.
Borden Ladner Gervais Llp
Exxonmobil Chemical Patents Inc.
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