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Title: Method of producing pyrolysis gases from carbon-containing materials

Abstract

A gasification process of improved efficiency is disclosed. A dual bed reactor system is used in which carbon-containing feedstock materials are first treated in a gasification reactor to form pyrolysis gases. The pyrolysis gases are then directed into a catalytic reactor for the destruction of residual tars/oils in the gases. Temperatures are maintained within the catalytic reactor at a level sufficient to crack the tars/oils in the gases, while avoiding thermal breakdown of the catalysts. In order to minimize problems associated with the deposition of carbon-containing materials on the catalysts during cracking, a gaseous oxidizing agent preferably consisting of air, oxygen, steam, and/or mixtures thereof is introduced into the catalytic reactor at a high flow rate in a direction perpendicular to the longitudinal axis of the reactor. This oxidizes any carbon deposits on the catalysts, which would normally cause catalyst deactivation.

Inventors:
 [1];  [2];  [3];  [1]
  1. (Richland, WA)
  2. (West Richland, WA)
  3. (Kennewick, WA)
Issue Date:
Research Org.:
BATTELLE MEMORIAL INSTITUTE
OSTI Identifier:
867101
Patent Number(s):
4865625
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; producing; pyrolysis; gases; carbon-containing; materials; gasification; process; improved; efficiency; disclosed; dual; bed; reactor; feedstock; treated; form; directed; catalytic; destruction; residual; tars; oils; temperatures; maintained; level; sufficient; crack; avoiding; thermal; breakdown; catalysts; minimize; associated; deposition; cracking; gaseous; oxidizing; agent; preferably; consisting; air; oxygen; steam; mixtures; introduced; flow; rate; direction; perpendicular; longitudinal; axis; oxidizes; carbon; deposits; normally; catalyst; deactivation; pyrolysis gas; gasification reactor; direction perpendicular; level sufficient; carbon deposits; improved efficiency; bed reactor; flow rate; longitudinal axis; gasification process; oxidizing agent; catalytic reactor; carbon-containing material; pyrolysis gases; containing material; catalyst deactivation; gaseous oxidizing; feedstock materials; oxidizing agen; containing materials; /48/252/

Citation Formats

Mudge, Lyle K., Brown, Michael D., Wilcox, Wayne A., and Baker, Eddie G. Method of producing pyrolysis gases from carbon-containing materials. United States: N. p., 1989. Web.
Mudge, Lyle K., Brown, Michael D., Wilcox, Wayne A., & Baker, Eddie G. Method of producing pyrolysis gases from carbon-containing materials. United States.
Mudge, Lyle K., Brown, Michael D., Wilcox, Wayne A., and Baker, Eddie G. Sun . "Method of producing pyrolysis gases from carbon-containing materials". United States. https://www.osti.gov/servlets/purl/867101.
@article{osti_867101,
title = {Method of producing pyrolysis gases from carbon-containing materials},
author = {Mudge, Lyle K. and Brown, Michael D. and Wilcox, Wayne A. and Baker, Eddie G.},
abstractNote = {A gasification process of improved efficiency is disclosed. A dual bed reactor system is used in which carbon-containing feedstock materials are first treated in a gasification reactor to form pyrolysis gases. The pyrolysis gases are then directed into a catalytic reactor for the destruction of residual tars/oils in the gases. Temperatures are maintained within the catalytic reactor at a level sufficient to crack the tars/oils in the gases, while avoiding thermal breakdown of the catalysts. In order to minimize problems associated with the deposition of carbon-containing materials on the catalysts during cracking, a gaseous oxidizing agent preferably consisting of air, oxygen, steam, and/or mixtures thereof is introduced into the catalytic reactor at a high flow rate in a direction perpendicular to the longitudinal axis of the reactor. This oxidizes any carbon deposits on the catalysts, which would normally cause catalyst deactivation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

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