Increasing stability of a pyrolysis product

Patent metadata

Field	Value
Publication number	US-9816040-B2
Application number	US-201314021389-A
Country	US
Kind code	B2
Filing date	Sep 9, 2013
Priority date	Sep 10, 2012
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

The present disclosure relates generally to novel biomass pyrolysis processes and systems that decrease entrainment of char and other contaminants with the pyrolysis vapors as a direct consequence of the biomass feedstock comprising particles that are larger than a defined minimum diameter. The biomass feedstock may optionally be compressed to form feedstock pellets that are larger than a defined minimum diameter.

First claim

The invention claimed is:

1. A biomass pyrolysis process, comprising the steps of:
(a) sizing a biomass feedstock to consist of particles having a diameter ranging from 300 microns to 500 microns;
(b) pyrolyzing the biomass feedstock in a reactor for a residence time of less than 5 seconds, wherein the pyrolyzing forms products comprising a primary gaseous product and char;
(c) passing the primary gaseous product out of the reactor, and condensing the primary gaseous product to produce a pyrolysis oil that is characterized by a total metal content (in ppm) that is six percent or less of the total metal content (in ppm) of the biomass feedstock.

Assignees

• Daugaard Daren E
• Jones Samuel T
• Gorke Johnathan T
• Phillips 66 Co

Inventors

• Daugaard Daren E
• Jones Samuel T
• Gorke Johnathan T

Classifications

• Y02E50/10

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

• C10B53/02 Primary

  of cellulose-containing material (production of pyroligneous acid C10C5/00) · CPC title

• C10L3/08

  Production of synthetic natural gas · CPC title

• C10G2300/1011

  Biomass · CPC title

• C10J3/46 Primary

  Gasification of granular or pulverulent flues in suspension · CPC title