Abstract

A method including: pretreating biomass feed stock in a first pressurized reactor, wherein the feed stock undergoes hydrolysis in the first pressurized reactor; discharging the feed stock from the first pressurized reactor to a pressurized sealing device having a first pressurized coupling to a feedstock discharge port of the first pressurized reactor; maintaining a vapor …

Legal parties

Party
Inventors (applicants): Bertil Stromberg, Thomas Pschorn, Namhee Shin
Assignees (initial): Andritz Inc. (Glen Falls, US)
Agents: Nixon & Vanderhye P.C. (attorney)

The application was examined by Jacob T Minskey (USPTO dept. 1741)

Claims

  • 1. A method for pretreating cellulosic biomass feed stock comprising: …
  • 2. The method of claim 1 further comprising introducing at least one of mild acid …
  • 3. The method of claim 1 wherein the step of pretreating the feed stock occurs …

Cited documents

Patents

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Drawings

Brief Description of the Drawings

FIG. 1 depicts a schematic diagram of a flow through a two reactor process for pre-treatment of cellulosic biomass feed stock. FIG. 2 depicts a reactor system with an inclined …

Description

Background of the Invention

The present invention relates to pre-treatment of cellulosic biomass feed stocks, such as agricultural residues (including stalks, stover and hulls), straws and grasses, forest and sawmill residues (including wood chips …

Cross Related Application

This application is a divisional of U.S. Non-Provisional Utility application Ser. No. 12/389,020, filed Feb. 19, 2009, and claims the benefit of U.S. Provisional Utility Patent Application 61/032,115, filed Feb. …

Detailed Description of the Invention

FIG. 1 shows a flow sketch of a cellulosic biomass feed stock pre-treatment process 10 having a first pressurized reactor 12 to hydrolyze and dissolve hemi-cellulose from feed stock 14. The hemi-cellulose …

More details about System and Method for Preextraction of Hemicellulose Through Using a Continuous Prehydrolysis and Steam Explosion Pretreatment Process

Miscellaneous patent data

The exemplary claims include number 1, similar patents are classified under separate heated drying means, Continuous processes, Pulping cellulose-containing materials, Tangent cylinder molds, Wet combustion, Molds converge to unit web, Mineral fibers, ClO2 or chlorites, Nitrogen containing, ammonium bisulfite, the examination was conducted by Jacob T Minskey (1741 USPTO department), particularly claims a method for pretreating cellulosic biomass feed stock comprising…, the invention description is illustrated by 8 drawings, the invention is titled System and Method for Preextraction of Hemicellulose Through Using a Continuous Prehydrolysis and Steam Explosion Pretreatment Process, the application was published on Oct. 25, 2011, the assignee classification - a United States company, the recorded agent's organization is Nixon & Vanderhye P.C., developed by Namhee Shin et al., the protection scope is defined by 21 claims, numbered 13/280,888 (application), 8 figures are supplied with the description, the primary classification Plural diverse stage treatment has been designated to the document, the known inventor's name is Shin Namhee, the inventor's location - Clifton Park, NY, the grant number is 08512512, the assignee location is Glen Falls (US); its company is Andritz Inc., the drawings include the following: reactor system with an inclined, reactor system with an inclined, System and Method for Preextraction, schematic diagram of a flow, the patent was granted on Aug. 20, 2013, the recorded applicant's name is Thomas Pschorn.

Invention classification information

The invention is classified under Multiple stages of fermentation; multiple types of micro-organisms or reuse of micro-organisms, From plant material, Cellulose or derivative, Defibration by projection or explosion, Multi-stage processes, Preparatory treatment of cellulose for making derivatives thereof, Continuous, Plural diverse stage treatment. The designated search classifications include Multiple stages of fermentation; multiple types of micro-organisms or reuse of micro-organisms, From plant material, Continuous, Cellulose or derivative, Defibration by projection or explosion, Plural diverse stage treatment.

Patent details
Publication number 08512512
Publication date Aug. 20, 2013
Kind code B2
Application number 13/280,888
Application date Oct. 25, 2011
Application type U
Application series code 13
National classification 162/19
Total number of claims 21
Exemplary claims 1
Number of drawings 8
Number of figures 8
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