C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/208
C10G 25/09 (2006.01) C10G 9/32 (2006.01) C10G 51/04 (2006.01) C10G 55/06 (2006.01)
Patent
CA 1169010
SELECTIVE VAPORIZATION PROCESS AND DYNAMIC CONTROL THEREOF ABSTRACT OF THE DISCLOSURE Whole crude and residual fractions from distillation of petroleum and like feed stocks are subjected to selective vaporization to prepare heavy fractions of reduced Conradson Carbon and/or metals content by short-term, high temperature riser contact with a substantially inert solid contact material of low surface area in a selective vaporization zone. High boiling point components of the charge which are of high Conradson Carbon number and/or high metal content remain on the contact material as a combustible deposit which is then burned off in a combustion zone whereby the contact material is heated to a high temperature for return to the selective vaporization zone to supply the heat required therein. The system is dynamically controlled for fuel supply in the combustion zone by the lower hydrogen content, least valuable components of the feed. That control is exercised by controlling the temperature of the selective vaporization zone to about the minimum value which will maintain a predetermined desired temperature in the combustion zone.
376433
Engelhard Minerals & Chemicals Corporation
Mcfadden Fincham
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