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Method for co-producing furfural and 5-hydroxymethylfurfural by using lignocellulose-containing biomass

A technology of lignocellulose and hydroxymethylfurfural, applied in the field of biomass chemistry, can solve the problems that the yield needs to be further improved, achieve the effects of improving resource utilization efficiency, low price, and solving recycling problems

Active Publication Date: 2015-03-11
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of fructose and glucose has been able to produce higher yields of HMF, the yield of HMF from cellulosic biomass needs to be further improved

Method used

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  • Method for co-producing furfural and 5-hydroxymethylfurfural by using lignocellulose-containing biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Mechanically mix cellulose and sodium bisulfate at a mass ratio of 100:1;

[0028] (2) Weigh 0.5 g of the above-mentioned reaction raw materials mixed with the catalyst and put them into the fixed-bed reactor 5, and tighten the joint of the fixed-bed reactor 5;

[0029] (3) Pass the carrier gas (nitrogen) into the fixed bed reactor 5, increase the system pressure to 0.5Mpa, and set the carrier gas flow rate to 0.5L / min;

[0030] (4) Set the temperature of the fixed bed reactor 5 to 160°C and the temperature of the vaporization chamber 4 to 160°C, and start to raise the temperature of the fixed bed reactor 5 and vaporization chamber 4;

[0031] (5) When the temperature of the vaporization chamber 4 and the fixed bed reactor 5 rises to the predetermined temperature respectively, water is supplied to the vaporization chamber 4 through the high-pressure advection pump 2, and the water flow rate is 0.5ml / min, and the water is vaporized in the vaporization chamber 4 to pr...

Embodiment 2

[0035] (1) Mechanically mix cellulose and potassium hydrogen sulfate according to the mass ratio of 5:1;

[0036] (2) Weigh 0.5 g of the above-mentioned reaction raw materials mixed with the catalyst and put them into the fixed-bed reactor 5, and tighten the joint of the fixed-bed reactor 5;

[0037] (3) Pass the carrier gas (argon gas) into the fixed bed reactor 5, increase the system pressure to 1.0Mpa, and set the carrier gas flow rate to 0.5L / min;

[0038] (4) Set the temperature of the fixed bed reactor 5 to 200°C, and the temperature of the vaporization chamber 4 to 200°C, and start to raise the temperature of the fixed bed reactor 5 and vaporization chamber 4;

[0039] (5) When the temperature of the vaporization chamber 4 and the fixed bed reactor 5 rises to the predetermined temperature respectively, water is supplied to the vaporization chamber 4 through the high-pressure advection pump 2, and the water flow rate is 1.0ml / min, and the water is vaporized in the vapori...

Embodiment 3

[0043] (1) Lithium hydrogen sulfate (mass ratio of lithium hydrogen sulfate to cellulose: 1:10) was loaded on the surface of cellulose by impregnation method, and dried at 70°C;

[0044] (2) Weigh 0.5 g of the above catalyst-loaded reaction raw materials into the fixed-bed reactor 5, and tighten the joint of the fixed-bed reactor 5;

[0045] (3) Pass the carrier gas (helium) into the fixed bed reactor 5, increase the system pressure to 2.0Mpa, and set the carrier gas flow rate to 0.3L / min;

[0046](4) Set the temperature of the fixed bed reactor 5 to 240°C, and the temperature of the vaporization chamber 4 to 240°C. When the temperatures of the vaporization chamber 4 and the fixed bed reactor 5 respectively rise to the predetermined temperature, the high pressure advection pump 2 will supply the vaporization chamber 4 with Water, the water flow rate is 1.5ml / min, the water is vaporized in the vaporization chamber 4 to produce water vapor and mixed with the carrier gas and then...

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Abstract

The invention discloses a method for efficiently co-producing furfural (FF) and 5-hydroxymethylfurfural (HMF) by taking lignocellulosic-containing biomass as a raw material. By adopting the method, the HMF and the FF are prepared with high yield through one step by catalyzing the biomass, wherein in the catalyzing process, the biomass containing cellulose and hemicellulose is used as a reaction raw material, acid salt of polyatomic acid is used as a catalyst, and a fixed bed is used as a reactor. Compared with other technologies for biomass resource utilization, the method has the significant advantages that the lignocellulose biomass which has a wide resource and is low in price is used as the raw material; the used catalyst is low in price and environment-friendly; organic solvents which are used in the conventional process for preparing the HMF are not required; a product is taken out of the reactor by carrier gas, so that the catalyst is directly separated from the product; the catalyst is recycled by recrystallizing washed residues, so that the problem of catalyst recycling in the conventional hydrolysis technology is solved; and the operation condition is mild, the process is simple and the method can be industrialized easily.

Description

Technical field: [0001] The invention relates to the technical field of biomass chemistry, in particular to a method for co-producing furfural and 5-hydroxymethylfurfural by using lignocellulosic biomass. Background technique: [0002] At present, with the depletion of fossil resources and the deteriorating environmental problems caused by the burning of fossil resources, the development of renewable alternative fossil resources has become an important task for scientists from all over the world. Lignocellulosic biomass is a kind of biomass raw material that exists widely in nature and is cheap. The use of lignocellulosic biomass raw materials to prepare alternative liquid fuels or chemicals has attracted extensive attention. [0003] Furfural (FF) and 5-hydroxymethylfurfural (HMF) are an important class of functional platform compounds, and they are one of the few chemicals that can only be prepared from biomass and cannot be synthesized from fossil resources. As biomass ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/50C07D307/46
CPCY02P20/584
Inventor 马隆龙石宁王铁军刘琪英张琦章青
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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