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US 8,354,065 B1Granted
Catalyst charge heater
AssigneeMarathon Petroleum Company LP
InventorsJeff Sexton, David A. Lomas
Life of this patent
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Abstract
This device is an FCC Catalyst Charge Heater. The device uses a catalyst cooler to preheat FCC feedstocks. It can be used with or without an FCC Catalyst Heater in the regenerator to satisfy the FCC unit heat balance while maximizing liquid volume yield and reducing FCC emissions.
Claims9
A fluidized bed catalytic cracking apparatus (FCC) for treating gaseous hydrocarbons from a cracking catalyst, the apparatus comprising:
- i) a catalyst regenerator for regenerating catalyst by contact with oxygen containing gas to produce regenerated catalyst;
- ii) a standpipe for recycling the regenerated catalyst from the catalyst regenerator to a cracking zone;
- iii) a stripping means for stripping inert gases from the regenerated catalyst as the catalyst flows from the regenerator;
- iv) a riser for receiving the stripped catalyst;
- and
- v) a FCC catalyst charge heater for preheating FCC feedstocks;
- vi) wherein the FCC catalyst charge heater is a catalyst cooler;
- vii) wherein the FCC catalyst charge heater is used in conjunction with an FCC catalyst heater in the regenerator;
- and
- viii) wherein stripping steam is used to control the heat transfer coefficient of the catalyst charge heater to achieve the desired feed temperature.
7 more elements
Dependencies are inferred from the claim text.