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Utilizing a multiphase reactor for the conversion of biomass to produce substituted furans

A multiphase reactor and biomass technology, applied in organic chemistry, fermentation, etc., can solve the problems of slow kinetics, reaction conditions and biofuel preparation methods, and achieve cost-effective results

Active Publication Date: 2014-07-16
起源材料运营公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The production of 5-(chloromethyl)furfural and 5-(hydroxymethyl)furfural from cellulose was first documented in the early 1990s; however, slower kinetics and harsh reaction conditions made biofuel production Approach is not commercially attractive

Method used

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  • Utilizing a multiphase reactor for the conversion of biomass to produce substituted furans
  • Utilizing a multiphase reactor for the conversion of biomass to produce substituted furans

Examples

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Embodiment 1

[0112] Example 1: Preparation of 5-(chloromethyl)furfural and 5-(hydroxymethyl)furfural from lignocellulosic biomass and furfural

[0113] Lignocellulosic biomass was obtained from municipal wastewater in Davis (CA) and fed into a 2000-L fluidized bed reactor via side feed at a rate of 50 kg / min. Gaseous hydrochloric acid was fed into the reactor at 4,000 L / min via the other side input. The temperature inside the reactor was about 220°C, and the pressure inside the reactor was about 15 atm.

[0114] Fluidization occurs inside the reactor so that the sludge and gaseous acid can be thoroughly and uniformly mixed. After a residence time of two minutes, the crude reaction mixture of gas and solids reaches the top of the reactor and exits the reactor due to the pressure difference inside (about 15 atm) and outside (about 4 atm) of the reactor. As the gas and solids leave the reactor, the crude reaction mixture is separated into gaseous hydrochloric acid and a solid / liquid mix...

Embodiment 2

[0118] Example 2: Preparation of 5-(chloromethyl)furfural (CMF) from fructose

[0119] Into a clean and dry 350 ml pressure-sealed round bottom flask equipped with a magnetic stir bar was added granulated fructose (0.75 g, 4.16 mmol). After that, the flask was placed under an inert argon atmosphere, and dry calcium chloride (5.6 g, 50.4 mmol) and aluminum trichloride (0.119 g, 0.832 mmol) were added, and the solid was suspended in 1,2-dichloroethane (75ml). The reaction mixture was removed from the inert atmosphere and gaseous hydrochloric acid (0 wt% in water) was bubbled into the solution until gas started to come out of the flask. The flask was then sealed and placed in a preheated oil bath at 85°C and allowed to stir for 1 hour. Then, the reaction mixture was cooled to room temperature. The solid was filtered through filter paper and diluted into 100ml of solvent. Volumetric analysis using a CMF flame ionization detector (FID) - standard curve showed a concentration ...

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Abstract

The present disclosure provides methods to produce substituted furans (e.g., halomethylfurfural, hydroxymethylfurfural, and furfural), by acid-catalyzed conversion of biomass using a gaseous acid in a multiphase reactor, such as a fluidized bed reactor.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 495,324, filed June 9, 2011, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure generally relates to the conversion of biomass to biofuels and chemicals. In particular, the present disclosure relates to the production by acid-catalyzed conversion of biomass containing polysaccharides (e.g., cellulose) and / or heteroglycans (e.g., hemicellulose) using gaseous acids in heterogeneous reactors to produce Substituted furans (for example, halomethylfurfural, hydroxymethylfurfural, and furfural). Background technique [0004] Decades have focused on reducing dependence on fossil fuels for transportation fuels and as feedstock for industrial chemicals, with a particular focus on enabling the economic viability of renewable feedstocks. Due to continued secular increases in fuel prices, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/46C07D307/50C12P17/04
CPCC07D307/46C07D307/50
Inventor M·N·马苏诺J·比斯尔R·L·史密斯B·希金斯A·B·伍德M·福斯特
Owner 起源材料运营公司
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