Fluid catalytic cracking with supplemental heat

a catalytic cracking and flue gas technology, applied in catalytic cracking, cracking process, hydrocarbon oil treatment, etc., can solve the problems of increasing the amount of coke generated, and increasing the yield of liquid products, so as to reduce the co2 emission, increase the heat release of regenerators, and the effect of slow reaction
US20160362613A1Inactive Publication Date: 2016-12-15EXXON RES & ENG CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
EXXON RES & ENG CO
Publication Date
2016-12-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A potentially heat-deficient fluid catalytic cracking process for effecting a bulk boiling point conversion of a high boiling point petroleum feed to lower boiling products in which the overall enthalpy balance between the endothermic cracking and exothermic regeneration is maintained by combustion of a supplemental fuel in the middle or upper region of the dense bed in the regenerator (including the region immediately above the dense phase bed). There is a direct economic benefit from operation of the cracking process in this way since the preferred supplemental fuel is methane (natural gas) which is currently a low cost fuel while liquid products are higher value. Use of natural gas as a supplemental fuel will allow re-optimization of the catalyst and operations separately from the heat balance demand.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Application Ser. No. 62 / 172,917 filed Jun. 9, 2015, which is herein incorporated by reference in its entirety.FIELD OF THE INVENTION

[0002] The present invention relates to the fluid catalytic cracking (FCC) process for converting high boiling point petroleum oils to lower boiling products.BACKGROUND OF THE INVENTION

[0003] The fluid catalytic cracking (FCC) process has become the pre-eminent source for motor gasoline in the USA and also serves the petrochemical industry with light olefins as petrochemical feedstock. In the FCC process, a pre-heated high boiling point petroleum feed such as a vacuum gas oil or residual fraction is subjected to a bulk boiling range conversion by contact with a hot, acidic-function catalyst in a specialized process unit in which the feed comes into contact with the hot catalyst at the bottom of a tall vertical pipe or “riser” in which the essential cracking r...

Claims

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