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Method of extraction of furfural and glucose from biomass using one or more supercritical fluids

一种生物质、葡萄糖的技术，应用在葡萄糖产生、化学仪器和方法、糖衍生物等方向，能够解决受限生产能力、生物质被处理的速率低等问题

Inactive Publication Date: 2011-11-09
RENMATIX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, many methods for converting biomass to fuels or industrial chemicals are limited in production capacity due to the low rate at which biomass is processed

Method used

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  • Method of extraction of furfural and glucose from biomass using one or more supercritical fluids
  • Method of extraction of furfural and glucose from biomass using one or more supercritical fluids
  • Method of extraction of furfural and glucose from biomass using one or more supercritical fluids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0176] Example 1 - Semi-batch Process for Biomass Fractionation

[0177] Corn stover was obtained from National Renewable Energy Laboratory (NREL). Corn stover was processed using a grinder to produce 40 mesh corn stover. The 40 mesh particle size was found to be suitable for laboratory scale supercritical fluid extraction processes.

[0178] with supercritical ethanol-CO 2 Treatment of corn stover with the mixture was carried out using a semi-batch reactor (see Figure 2A ). Corn stover was held in bed 6 by a 20 micron sintered metal melt placed at the downstream end of the bed. During sand bath 4 heating, the system was purged with nitrogen. Once the desired temperature is reached, start the ethanol / CO using HPLC pump 3 2 From the reservoir 2 the flow passes first through the preheating coil 5 and then through the corn stover. Solvent temperature was monitored by thermocouples at the bed inlet. After passing through the corn stover, the solvent is expanded to atmosph...

Embodiment 2

[0187] Example 2 - Batch Process for Biomass Fractionation

[0188] One set of experiments was performed using a 1.2 ml batch reactor made of Swagelok stainless steel tubing and a TechneSB-2 fluidized sand bath. Corn stover (40 mesh size) was used for this set of experiments.

[0189] A calculated amount of 40 mesh size corn stover (1 g dry calculated VF), 3 g liquid (50 / 50 wt% mixture of water and ethanol) and 5-20 wt% dry ice (based on liquid weight) was charged to a Swagelok stainless steel tube. The tube was heated in a sand bath at varying temperature (180°C to 320°C) and pressure (75-80 bar) at different time intervals (0.17 min to 15 min). After heat treatment, the reaction was quenched by immersing the tubes in a water bath maintained at 25°C. The reaction product mixture resulting from this workup is filtered to obtain a solid product comprising cellulose. The filtrate was evaporated in an oven maintained at 75°C. The resulting remaining solid was added to water a...

Embodiment 3

[0198] Example 3 - Continuous Fractionation of Biomass - I

[0199] Continuous fractionation of biomass using a high-pressure, continuously stirred slurry reactor system (participated in Figure 2B ). Slurry reactors have larger volumes (100 ml) and operate at temperatures and pressures up to 350°C and 1,100 psig. The reactor system is equipped with auxiliary systems, including high pressure process gas and liquid feed systems; liquid product collection systems; and data monitoring and collection systems. Samples of liquid and gaseous products were obtained continuously. Similar stirred reactors have been successfully used by other researchers to study the hydrothermal treatment of biomass (Osada M, SatoT, Watanabe M, AdschiriT, AraiK. "Low-Temperature Catalytic Gasification of Lignin and Cellulose with a Ruthenium Catalystin Supercritical Water" Energy Fuels 2004, 18: 327-333).

[0200]In this steady state experimental setup, biomass is first mechanically treated to obtai...

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Abstract

Methods of making glucose and / or furfural from biomass require one or more supercritical fluids that may be used to process biomass, cellulose from the biomass, and / or xylose from the biomass. Examples of supercritical fluids for use in processing biomass include ethanol, water, and carbon dioxide at a temperature and pressure above the critical points for ethanol and carbon dioxide but at a temperature and / or pressure below that of the critical point for water. A supercritical fluid containing carbon dioxide and water may be used to convert cellulose to glucose or convert xylose to furfural. The fluid has a temperature and pressure above the critical point of carbon dioxide, but at least one of the temperature and pressure is below the critical point for water.

Description

[0001] Cross-references to related applications [0002] The application claims U.S. Provisional Patent Application No. 61 / 081,337 filed on July 16, 2008, U.S. Provisional Patent Application No. 61 / 081,341 filed on July 16, 2008, and U.S. Provisional Patent Application No. 61 filed on July 16, 2008. / 081,346, U.S. Provisional Patent Application No. 61 / 081,348 filed on July 16, 2008, U.S. Provisional Patent Application No. 61 / 092,680 filed on August 28, 2008, and U.S. Provisional Patent Application No. filed on July 10, 2009 No. 61 / 224,809, the disclosures of each provisional patent application are hereby incorporated by reference in their entirety. [0003] Statement of Rights in Inventions from Government-Sponsored Research [0004] not applicable. Background of the invention [0005] Biomass is an increasingly important feedstock for the production of fuels and industrial chemicals. Cellulose present in most biomass sources is particularly difficult to react. Additionall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B1/00C07H1/00B01J19/00
CPCC08H8/00C07D307/50C07G1/00C13K1/02C13K13/002Y02P20/54
Inventor S·奇拉姆比K·L·卡达姆
Owner RENMATIX INC
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