Treating biomass
First Claim
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1. A system for cooling multiple single-type window foils of an electron beam accelerator comprising:
- a primary single-type window foil communicating with a vacuum side of a scanning horn of the electron beam accelerator;
a secondary single-type window foil positioned on an atmospheric side of the scanning horn, wherein the distance of the secondary window to a biomass material under irradiation is more than 0.1 cm and less than 10 cm;
a first flow path for providing a first cooling gas across the primary single-type window foil and second flow path for providing a second cooling gas across the secondary single-type window foil, the secondary single-type window foil being exposed to atmospheric pressure;
a pivoting beam stop configured to pivot between the primary single-type window and the secondary single-type window to block an electron beam of the accelerator;
a conveyor that is configured to move the biomass material through an irradiation zone under the secondary single-type window foil;
wherein the primary and secondary single-type window foils are positioned with a gap of less than about 9 cm between them.
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Abstract
Methods and systems are described for processing cellulosic and lignocellulosic materials and useful intermediates and products, such as energy and fuels. For example, irradiating methods and systems are described to aid in the processing of the cellulosic and lignocellulosic materials. The electron beam accelerator has multiple windows foils and these foils are cooled with cooling gas. In one configuration a secondary foil is integral to the electron beam accelerator and in another configuration the secondary foil is part of the enclosure for the biomass conveying system.
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Citations
45 Claims
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1. A system for cooling multiple single-type window foils of an electron beam accelerator comprising:
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a primary single-type window foil communicating with a vacuum side of a scanning horn of the electron beam accelerator; a secondary single-type window foil positioned on an atmospheric side of the scanning horn, wherein the distance of the secondary window to a biomass material under irradiation is more than 0.1 cm and less than 10 cm; a first flow path for providing a first cooling gas across the primary single-type window foil and second flow path for providing a second cooling gas across the secondary single-type window foil, the secondary single-type window foil being exposed to atmospheric pressure; a pivoting beam stop configured to pivot between the primary single-type window and the secondary single-type window to block an electron beam of the accelerator; a conveyor that is configured to move the biomass material through an irradiation zone under the secondary single-type window foil; wherein the primary and secondary single-type window foils are positioned with a gap of less than about 9 cm between them. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification