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Photo of Katherin Gaston

Katherine Gaston

Thermochemical Process/Control Engineer

Katherine.Gaston@nrel.gov | 303-384-6273
Orcid ID http://orcid.org/0000-0002-1162-0905

Engineers walk and work among the pipes and tubes of NREL’s Thermal and Catalytic Process Development Unit.

NREL’s Thermal and Catalytic Process Development Unit can process 1/2 ton per day of biomass via fast pyrolysis or steam gasification. The new catalytic riser reactor system can be used for ex situ vapor-phase upgrading or steam reforming with continuous catalyst regeneration. Get more information about NREL’s Thermochemical Processes.

Research Interests

  • Biomass fast pyrolysis including catalytic upgrading

  • Biomass gasification and catalytic gas cleanup

  • Fluidized beds and circulating fluidized beds

  • Unit operations associated with thermochemical and catalytic conversion of biomass

  • Pilot plant design, operations, and optimization


Affiliated Research Programs


Areas of Expertise

Katherine has worked as a chemical process and controls engineer in the Thermal and Catalytic Process Development Unit at the National Renewable Energy Laboratory (NREL) since 2007, focusing on safe, pilot-scale research of various technologies that enable renewable biomass to be converted to liquid fuels and chemicals. Her expertise includes:

  • Pilot-scale process design, installation, and startup

  • Design, installation, and programming of instrumentation and control systems

  • Pilot-plant experiment planning and operations

  • Data analysis and reporting

  • Process optimization

  • Process equipment design

  • Process safety management, management of change, process hazard analysis (PHA) and hazard and operability analysis (HAZOP), and layers of protection with regard to engineering controls


Education

  • BChE, University of Delaware, 1997

Professional Experience

  • Chemical Process & Controls Engineer, NREL, 2007–present

  • Controls Engineer, Applied Control Engineering, 2000–2006

  • Process Engineer, National Starch and Chemical, 1997–1999


Featured Publications

  1. "Pilot Scale Production of Mixed Alcohols from Wood," Industrial & Engineering Chemistry Research (2014) 

Plot of methane conversion and hydrogen to carbon monoxide ratio in reformers as a function of time on stream for steam plus carbon dioxide, using both reformers.

  1.  "Biomass pyrolysis and gasification of varying particle sizes in a fluidized-bed reactor," Energy & Fuels (2011)

Experimental apparatus showing a block-and-bleed feed system; fluidizing gas into preheater; 4FBR reactor with freeboard and flanges at bottom, midpoint, and top; gas cleanup coldfinger heat exchanger and coalescing filter; and analytical equipment measuring permanent gases.

  1. "Pilot-Scale Gasification of Corn Stover, Switchgrass, Wheat Straw, and Wood: 1. Parametric Study and Comparison with Literature," Industrial & Engineering Chemistry Research (2010)

Schematic diagram of the experimental installation showing the system of feeder, fluidized bed reactor, thermal cracker, cyclones, scrubber, blower, phase separator, water phase recycle, and superheated steam.

  1. "Pilot-Scale Gasification of Corn Stover, Switchgrass, Wheat Straw, and Wood: 2. Identification of Global Chemistry Using Multivariate Curve Resolution Techniques," Industrial & Engineering Chemistry Research (2009) 

Two line graphs comparing calculated concentrations of species in the product stream for four feedstocks with scores of the three factors identified using MCR. These data were measured at a steam-to-biomass ratio of 1:3 and an 8FBR temperature of 600 degrees Celsius.


Please contact me with research questions, ideas for collaborations, and questions about projects related to my research interests at NREL. Please do NOT contact me directly for jobs—see instead information on NREL's Director's Postdoctoral Fellowship program or on NREL Careers in general.