Methods and fuel processing apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream

Patent metadata

Field	Value
Publication number	US-10166519-B2
Application number	US-201213563125-A
Country	US
Kind code	B2
Filing date	Jul 31, 2012
Priority date	Jul 31, 2012
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

Methods and apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream are provided. In an embodiment, a method for upgrading a pyrolysis oil stream and a hydrocarbon stream includes providing the pyrolysis oil stream and providing the hydrocarbon stream separate from the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are introduced into a reaction zone. Deposits form adjacent to a pyrolysis oil outlet of the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are catalytically cracked in the presence of a particulate cracking catalyst in the reaction zone. During catalytic cracking, the pyrolysis oil deposits adjacent the pyrolysis oil outlet of the pyrolysis oil stream are removed, such as with a cleaning head.

First claim

What is claimed is:

1. A method of upgrading a pyrolysis oil stream and a hydrocarbon stream in a fluid catalytic cracking unit including a reaction zone, the method comprising the steps of:
generating the pyrolysis oil stream in a fast pyrolysis process and wherein the pyrolysis stream is immiscible with the hydrocarbon stream;
providing the pyrolysis oil stream, at a temperature less than or equal to about 80° C., through a pyrolysis oil feed line and the hydrocarbon stream through a hydrocarbon feed line separate from the pyrolysis oil feed line, wherein the pyrolysis oil feed line includes a pyrolysis oil outlet and wherein pyrolysis oil deposits form in the pyrolysis oil feed line adjacent the pyrolysis oil outlet;
introducing the pyrolysis oil stream from the pyrolysis oil feed line and the hydrocarbon stream from the hydrocarbon feed line into the reaction zone;
catalytically cracking the pyrolysis oil stream and the hydrocarbon stream in the presence of a particulate cracking catalyst in the reaction zone; and
during catalytic cracking, removing pyrolysis oil deposits in the pyrolysis oil feed line upstream of the reaction zone adjacent the pyrolysis oil outlet with a cleaning head disposed in the pyrolysis oil feed line wherein the cleaning head is a rotating auger, a wire brush head, or a ram head.

2. The method of claim 1 , wherein introducing the pyrolysis oil stream and the hydrocarbon stream into the reaction zone comprises separately introducing the pyrolysis oil stream through the pyrolysis oil feed line and the hydrocarbon stream through the hydrocarbon feed line into the reaction zone to form a mixture of the pyrolysis oil stream and the hydrocarbon stream in the reaction zone.

3. The method of claim 1 , wherein providing the pyrolysis oil stream through the pyrolysis oil feed line and the hydrocarbon stream through the hydrocarbon feed line comprises providing the hydrocarbon stream separate from the pyrolysis oil stream to a feed distributor having a mixing zone, wherein the pyrolysis oil outlet and the hydrocarbon outlet are in fluid communication with the mixing zone.

4. The method of claim 1 , further comprising mixing a carrier gas with the pyrolysis oil stream in an atomizing zone within the pyrolysis oil feed line prior to introducing the pyrolysis oil stream into the reaction zone, and wherein the pyrolysis oil deposits are removed downstream of the atomizing zone in the pyrolysis oil feed line.

5. The method of claim 4 , wherein removing the pyrolysis oil deposits in the pyrolysis oil feed line comprises moving the cleaning head within the pyrolysis oil feed line between a position upstream of the atomizing zone in the pyrolysis oil feed line and a position downstream of the atomizing zone in the pyrolysis oil feed line.

6. The method of claim 5 , further comprising storing the cleaning head adjacent a carrier gas inlet into the pyrolysis oil feed line.

7. The method of claim 6 , wherein the cleaning head comprises openings adapted to allow the carrier gas to pass through when the cleaning head is disposed adjacent the carrier gas inlet.

8. The method of claim 1 , wherein removing the pyrolysis oil deposits in the pyrolysis oil feed line comprises moving the cleaning head within the pyrolysis oil feed line in upstream and downstream directions.

9. The method of claim 8 , wherein the cleaning head has a shape generally conforming to an inner surface of the pyrolysis oil feed line at the pyrolysis oil outlet, and wherein moving the cleaning head within the pyrolysis oil feed line comprises passing the cleaning head through the pyrolysis oil outlet.

10. The method of claim 1 , further comprising mixing a carrier gas with the pyrolysis oil stream in an atomizing zone prior to introducing the pyrolysis oil stream into the reaction zone, and wherein the pyrolysis oil deposits are removed downstream of the atomizing zone.

11. The method of claim 1 , wherein providing the pyrolysis oil stream comprises maintaining a temperature of the pyrolysis oil stream below a temperature in the reaction zone substantially up to introduction into the reaction zone.

12. The method of claim 11 , wherein maintaining the temperature of the pyrolysis oil stream comprises maintaining the temperature of the pyrolysis oil stream at a temperature of less than or equal to about 100° C. substantially up to introduction into the reaction zone.

Assignees

• Kulprathipanja Sathit
• Palmas Paolo
• Baird Lance Awender
• Uop Llc

Inventors

• Kulprathipanja Sathit
• Palmas Paolo
• Baird Lance Awender

Classifications

• B01J2219/30223

  Cylinder · CPC title

• Y02P30/20

  using bio-feedstock · CPC title

• B01J2208/00902

  Nozzle-type feeding elements · CPC title

• B01J2219/30242

  Star · CPC title

• B01J2219/30408

  Metal · CPC title