Method and apparatus for producing hydrocarbon product and use

Patent metadata

Field	Value
Publication number	US-12305124-B2
Application number	US-202118248004-A
Country	US
Kind code	B2
Filing date	Oct 21, 2021
Priority date	Oct 26, 2020
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

The invention relates to a method and an apparatus for producing a hydrocarbons product from plastic containing material, wherein the plastic containing material is subjected into a pyrolysis reactor, steam is fed into the pyrolysis reactor, and the plastic containing material is pyrolyzed in the presence of the steam by using a catalytic pyrolysis with a mildly acidic catalyst comprising at least aluminium oxide, aluminium silicate, zirconium oxide or their combinations to convert the plastic containing material to the hydrocarbon product comprising wax. Further, the invention relates to the use of the product obtained by the method.

First claim

The invention claimed is:

1. A method for producing a hydrocarbon product from plastic containing material, wherein the method comprises steps:
subjecting the plastic containing material into a pyrolysis reactor,
feeding steam into the pyrolysis reactor, and
pyrolyzing the plastic containing material in the presence of the steam by using a catalytic pyrolysis with a mildly acidic catalyst which contains Al 2 O 3 to convert the plastic containing material to the hydrocarbon product comprising wax, wherein the hydrocarbon product comprises 40-90 wt-% wax, and residence time is 0.5-3.0 seconds in the catalytic pyrolysis.

2. The method according to claim 1 , wherein the wax is paraffin wax.

3. The method according to claim 1 , wherein the Al 2 O 3 catalyst is formed from sandblast material.

4. The method according to claim 1 , wherein the catalyst contains aluminium silicate formed from aluminium oxide and silicon dioxide.

5. The method according to claim 1 , wherein the catalyst contains ZrO2.

6. The method according to claim 1 , wherein the steam is fed from a bottom of the pyrolysis reactor.

7. The method according to claim 1 , wherein the mildly acidic catalyst is added as a fresh makeup catalyst feed into the pyrolysis reactor.

8. The method according to claim 1 , wherein the plastic containing material and the steam are mixed to form a mixture in the pyrolysis reactor.

9. The method according to claim 1 , wherein temperature is 450-650° C. during the catalytic pyrolysis in the pyrolysis reactor.

10. The method according to claim 1 , wherein the pyrolysis reactor is a fluidized bed reactor.

11. The method according to claim 1 , wherein the steam is used at least partly as a fluidizing gas.

Assignees

• Teknologian Tutkimuskeskus Vtt Oy

Inventors

• Simell Pekka
• Qureshi Muhammad
• Pienihaekkinen Elmeri

Classifications

• C10G2300/807

  Steam · CPC title

• C10G2300/1003

  Waste materials · CPC title

• C10B57/12

  Applying additives during coking · CPC title

• C10B53/07 Primary

  {of solid raw materials consisting} of synthetic polymeric materials, e.g. tyres (recovery or working-up of waste materials of organic macromolecular compounds or compositions based thereon by dry-heat treatment for obtaining partially depolymerised materials C08J11/10; production of liquid hydrocarbon mixtures from rubber or rubber waste C10G1/10) · CPC title

• C10B49/10

  according to the "fluidised bed" technique · CPC title