Processes for reducing the energy consumption of a catalytic cracking process

Patent metadata

Field	Value
Publication number	US-10703977-B2
Application number	US-201615285419-A
Country	US
Kind code	B2
Filing date	Oct 4, 2016
Priority date	Oct 5, 2015
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

Processes and apparatuses for co-processing pyrolysis effluent and a hydrocarbon stream in which a char produced by the catalytic cracking of the pyrolysis effluent is recovered and utilized to provide energy, such as heat to the catalytic cracking zone. The char can be burned in various combustion zones associated with the catalytic cracking zone. The char is produced from a renewable resource.

First claim

The invention claimed is:

1. A process for recovering energy in a fluid catalytic cracking zone, the process comprising:
generating char in a fluid catalytic cracking zone, the fluid catalytic cracking zone configured to receive at least a hydrocarbon stream and a pyrolyzed product and provide a cracked effluent, wherein the cracked effluent includes char;
separating the char from hydrocarbons in the cracked effluent to provide a recovered char; and
recovering energy from the recovered char.

2. The process of claim 1 , wherein the recovered char provides energy to the catalytic cracking zone by heating.

3. The process of claim 1 further comprising:
mixing the recovered char with a liquid fuel to provide a slurry fuel; and
burning the slurry fuel.

4. The process of claim 1 further comprising:
drying the recovered char to provide a dried char; and
burning the dried char.

5. The process of claim 1 wherein the char is separated from hydrocarbons in the cracked effluent in a char recovery zone.

6. The process of claim 5 wherein the char recovery zone includes a filtration zone.

7. The process of claim 6 wherein the filtration zone includes a slurry filter.

8. A process for recovering energy in a catalytic cracking zone, the process comprising:
generating char in a catalytic cracking zone, the catalytic cracking zone configured to receive at least a petroleum-based hydrocarbon stream and a pyrolyzed product and provide a cracked effluent, wherein the cracked effluent includes char;
separating the char from hydrocarbons in the cracked effluent to provide a recovered char; and
recovering energy from the recovered char.

9. The process of claim 8 , wherein the recovered char provides energy to the catalytic cracking zone by heating.

10. The process of claim 8 further comprising:
mixing the recovered char with a liquid fuel to provide a slurry fuel; and
burning the slurry fuel.

11. The process of claim 8 further comprising:
drying the recovered char to provide a dried char; and
burning the dried char.

12. The process of claim 8 wherein the char is separated from hydrocarbons in the cracked effluent in a char recovery zone.

13. The process of claim 12 wherein the char recovery zone includes a filtration zone.

14. The process of claim 13 wherein the filtration zone includes a slurry filter.

Assignees

• Uop Llc

Inventors

• Baird Lance A
• Kulprathipanja Sathit
• Palmas Paolo

Classifications

• Y02P30/00

  Technologies relating to oil refining and petrochemical industry · CPC title

• F23G2900/50202

  Waste pyrolysis, gasification or cracking in presence of catalysts · CPC title

• C10L2290/143

  of fuel · CPC title

• Y02E50/10

  Biofuels, e.g. bio-diesel · CPC title

• C10L2200/0469

  Renewables or materials of biological origin · CPC title