Processes for producing biomass-derived pyrolysis oils

Patent metadata

Field	Value
Publication number	US-9982198-B2
Application number	US-201615282678-A
Country	US
Kind code	B2
Filing date	Sep 30, 2016
Priority date	Oct 1, 2015
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

Processes for pyrolyzing biomass. A catalyst is used to both pyrolyze and deoxygenate the biomass within the pyrolysis zone. A source of carbon monoxide is also passed to the pyrolysis reactor. The source of carbon monoxide may comprise a stream of gas that includes carbon monoxide, or a material capable of generating or being converted in carbon monoxide within the pyrolysis zone. The carbon monoxide may be used as a reactant for a water gas shift reaction or as a reducing agent to remove oxygen from oxygenated hydrocarbons. The catalyst preferably comprises iron (III) oxide.

First claim

The invention claimed is:

1. A process for producing biomass derived pyrolysis oil, the process comprising:
pyrolyzing a carbonaceous biomass feedstock in a pyrolysis zone having a catalyst to provide a pyrolized effluent including oxygenated hydrocarbons, wherein the catalyst comprises a portion of pitch and said pitch comprises iron oxide;
deoxygenating oxygenated hydrocarbons within the pyrolysis zone;
increasing an amount of carbon monoxide in the pyrolysis zone with a source of carbon monoxide, wherein the source of carbon monoxide is different than the carbonaceous biomass feedstock; and
condensing a portion of the pyrolysis effluent to produce the biomass derived pyrolysis oil.

2. The process of claim 1 wherein the source of carbon monoxide comprises a second portion of the pitch.

3. The process of claim 1 further comprising regenerating catalyst in a regeneration zone, the regeneration zone providing an off gas including carbon monoxide.

4. The process of claim 3 wherein at least a portion of the off gas is passed to the pyrolysis zone as the source of carbon monoxide.

5. A process for producing biomass derived pyrolysis oil, the process comprising:
passing a carbonaceous biomass feedstock into a pyrolysis zone having a catalyst and configured to pyrolyze the carbonaceous biomass feedstock and provide at least oxygenated hydrocarbons, wherein the catalyst comprises a portion of pitch and said pitch comprises iron oxide;
passing a source of carbon monoxide to the pyrolysis zone, wherein the source of carbon monoxide is different than the carbonaceous biomass feedstock;
deoxygenating at least a portion of the oxygenated hydrocarbons within the pyrolysis zone with the catalyst and carbon monoxide to provide a pyrolyzed effluent;
recovering the pyrolized effluent from the pyrolysis zone; and
condensing a vapor portion of the pyrolized effluent into said biomass derived pyrolysis oil.

6. The process of claim 5 wherein the source of carbon monoxide comprises a second portion of the pitch.

7. The process of claim 5 further comprising passing a pitch to the pyrolysis zone, wherein the pitch includes both the catalyst and the source of carbon monoxide.

8. The process of claim 5 wherein the source of carbon monoxide generates carbon monoxide within the pyrolysis zone.

Assignees

• Uop Llc

Inventors

• Dutta Kanchan
• Ray Anjan
• Mani Krishna
• Kumar Avnish

Classifications

• C10G3/45 Primary

  containing iron group metals or compounds thereof · CPC title

• C10G2300/1011

  Biomass · CPC title

• C10G1/06

  by destructive hydrogenation · CPC title

• Y02P30/20

  using bio-feedstock · CPC title