Method of producing pyrolysis gases from carbon-containing materials

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

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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:

Mudge, Lyle K ^[1]; Brown, Michael D ^[2]; Wilcox, Wayne A ^[3]; Baker, Eddie G ^[1]

Richland, WA
West Richland, WA
Kennewick, WA

Issue Date:: 1989-01-01

Research Org.:: Battelle Memorial Institute, Columbus, OH (United States)

OSTI Identifier:: 867101

Patent Number(s):: 4865625

Assignee:: Battelle Memorial Institute (Richland, WA)

Patent Classifications (CPCs):: C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10K - PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE

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C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
C10J3/64 - with decomposition of the distillation products
C10J2200/158 - Screws
C10J2200/06 - Catalysts as integral part of gasifiers

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10K - PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
C10K3/023 - {Reducing the tar content}

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
C10J3/482 - {Gasifiers with stationary fluidised bed}

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10K - PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
C10K1/02 - Dust removal

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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.

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                    Mudge, Lyle K, Brown, Michael D, Wilcox, Wayne A, & Baker, Eddie G. Method of producing pyrolysis gases from carbon-containing materials.  United States.

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                    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.

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@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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