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Controlling process gases

  • US 9,611,516 B2
  • Filed: 06/09/2014
  • Issued: 04/04/2017
  • Est. Priority Date: 03/08/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • impinging a substantially inert gas on a first foil window of an electron beam horn while passing electrons through the window and inert gas while processing a cellulosic or lignocellulosic biomass material in particulate form on a conveyor;

    while flowing the inert gas through an enclosed space defined by the foil window, which is in communication with a vacuum side of the electron beam horn, and a secondary foil disposed facing the first foil window under flow conditions that maintain the pressure inside the space between about 50 and 200 psi;

    treating the inert gas to remove contaminants produced during processing of the biomass material; and

    enzymatically saccharifying the processed biomass material to produce a sugar solution.

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