Method and apparatus for producing hydrocarbons and use

Patent metadata

Field	Value
Publication number	US-12291675-B2
Application number	US-202117996667-A
Country	US
Kind code	B2
Filing date	Apr 19, 2021
Priority date	Apr 20, 2020
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

The invention relates to a method and an apparatus for producing hydrocarbons from plastic containing material, wherein the plastic containing material ( 1 ) is subjected into a pyrolysis reactor ( 2 ), steam ( 3 ) is fed into the pyrolysis reactor, and the plastic containing material is pyrolyzed with the steam by using a catalytic pyrolysis with a basic catalyst to convert the plastic containing material to a product ( 4 ) comprising hydrocarbons. 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 hydrocarbons from plastic containing material, wherein the method comprises:
subjecting the plastic containing material into a fluidized bed pyrolysis reactor;
feeding steam, used at least in part as a fluidizing gas, into the fluidized bed pyrolysis reactor; and
pyrolyzing the plastic containing material with the steam at a residence time of 0.5-3.0 seconds by using a catalytic pyrolysis with a basic catalyst to convert the plastic containing material to a product comprising hydrocarbons, wherein the basic catalyst is selected from the group consisting of dolomite and limestone; and
wherein the product comprising hydrocarbons is a liquid hydrocarbon product and a yield of hydrocarbon liquid is higher than a yield of hydrocarbon wax.

2. The method according to claim 1 , wherein the liquid hydrocarbon product comprises middle distillates.

3. The method according to claim 1 , wherein feeding the steam into the fluidized bed pyrolysis reactor comprises feeding the steam from a bottom of the fluidized bed pyrolysis reactor.

4. The method according to claim 1 , wherein the basic catalyst is added as a fresh makeup catalyst feed into the fluidized bed pyrolysis reactor during the pyrolysis.

5. The method according to claim 1 , comprising mixing the plastic containing material and the steam to form a mixture in the fluidized bed pyrolysis reactor.

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

7. The method according to claim 1 , wherein the product which comprises hydrocarbons is in the gaseous form after the fluidized bed pyrolysis reactor, and the gaseous product is condensed in a condenser to form the liquid hydrocarbon product.

8. An apparatus for producing hydrocarbons from plastic containing material, wherein the apparatus comprises:
a fluidized bed pyrolysis reactor which comprises a basic catalyst and in which the plastic containing material is pyrolyzed with steam at a residence time of 0.5-3.0 seconds by using a catalytic pyrolysis with the basic catalyst to convert the plastic containing material to a product comprising hydrocarbons, wherein the basic catalyst is selected from the group consisting of dolomite and limestone;
at least one inlet for feeding the plastic containing material into the fluidized bed pyrolysis reactor; and
at least one feeding device for feeding the steam into the fluidized bed pyrolysis reactor, wherein the steam is used at least partly as a fluidizing gas; and
where e product comprising hydrocarbons is a liquid hydrocarbon product, and a yield of hydrocarbon liquid is higher than a yield of hydrocarbon wax.

9. The apparatus according to claim 8 , wherein the steam is arranged to be fed via a bottom of the fluidized bed pyrolysis reactor.

10. The apparatus according to claim 8 , wherein the plastic containing material and the steam are mixed in the fluidized bed pyrolysis reactor.

11. A method comprising:
producing a product containing hydrocarbons from plastic containing material that is subjected into a fluidized bed pyrolysis reactor, wherein the plastic containing material is pyrolyzed with steam that is fed into the fluidized bed pyrolysis reactor at a residence time of 0.5-3.0 seconds by using a catalytic pyrolysis with a basic catalyst to convert the plastic containing material to the product, wherein the basic catalyst is selected from the group consisting of dolomite and limestone and wherein the steam is used at least partly as a fluidizing gas; and
using the product comprising hydrocarbons as a hydrocarbon component in an operation that comprises at least one of an operation to form middle distillates, fuels, monomers or chemicals, and an operation to a feed to refinery, polymerization or material manufacturing; and
wherein the product comprising hydrocarbons is a liquid hydrocarbon product, and a yield of hydrocarbon liquid is higher than a yield of hydrocarbon wax.

12. The method according to claim 11 , wherein the liquid hydrocarbon product comprises middle distillates.

13. The method according to claim 11 , wherein the steam is fed from a bottom of the fluidized bed pyrolysis reactor.

14. The method according to claim 11 , wherein the basic catalyst is added as a fresh makeup catalyst feed into the fluidized bed pyrolysis reactor during the pyrolysis.

15. The method according to claim 11 , wherein the plastic containing material and the steam are mixed to form a mixture in the fluidized bed pyrolysis reactor.

Assignees

• Teknologian Tutkimuskeskus Vtt Oy

Inventors

• Simell Pekka
• Qureshi Muhammad
• Pienihäkkinen Elmeri

Classifications

• C10G2300/1003

  Waste materials · CPC title

• C10G1/086

  Characterised by the catalyst used · CPC title

• C10B57/06

  containing additives · 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

• B01J23/02

  of the alkali- or alkaline earth metals or beryllium · CPC title