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Process for producing furfural from biomass raw material

A biomass raw material, furfural technology, applied in the direction of biofuel, petroleum industry, special dry distillation, etc., can solve the problems of low extraction rate of hemicellulose and low yield of furfural, achieve high cooking efficiency, simple process route, multiple benefit effect

Active Publication Date: 2014-11-19
JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] For this reason, the first technical problem to be solved by the present invention lies in the process of preparing furfural from biomass raw materials in the prior art, due to the low problem of hemicellulose extraction rate, the problem that the yield of furfural is not high, and then provide A process for preparing furfural from biomass raw materials with a high hemicellulose extraction rate;

Method used

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  • Process for producing furfural from biomass raw material

Examples

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Effect test

Embodiment 1

[0052] In this embodiment, the reed is first crushed and crushed to a particle size of 2 cm-10 cm.

[0053] The process for producing furfural from the reed in this embodiment includes the following steps:

[0054] (1) After the reed raw material is crushed and pretreated, under the catalysis of hydrogen peroxide, an organic acid solution with a total acid concentration of 75% by weight is used to cook the treated reed raw material. In this embodiment, the organic acid The mass ratio of acetic acid and formic acid in the liquid is 1:19, and the mass of the hydrogen peroxide accounts for 1 wt% of the mass of the reed raw material.

[0055] Control the reaction temperature at 90°C, react for 90 minutes, the solid-liquid mass ratio is 1:6, and perform the first solid-liquid separation of the obtained reaction liquid;

[0056] (2) Add the solid obtained from the first solid-liquid separation to the mixed acid solution formed by formic acid and acetic acid with a total acid concentration o...

Embodiment 2

[0062] In this embodiment, the bean straw is first crushed and crushed to a particle size of 2-10 cm.

[0063] In this embodiment, the process for producing furfural from the soybean straw includes the following steps:

[0064] (1) After the soybean straw raw material is crushed and pretreated, under the catalysis of hydrogen peroxide, an organic acid solution with a total acid concentration of 70 wt% is used to cook the processed soybean straw raw material. In this embodiment, The mass ratio of acetic acid and formic acid in the organic acid solution is 10:1, and the mass of the hydrogen peroxide accounts for 3 wt% of the mass of the soybean straw raw material.

[0065] The reaction temperature is controlled to 100°C, the reaction is 70 minutes, the solid-liquid mass ratio of the mixed acid solution of formic acid and acetic acid to the biomass raw material is 1:5, and the obtained reaction liquid is subjected to the first solid-liquid separation;

[0066] (2) Add the solid obtained ...

Embodiment 3

[0072] In this embodiment, the straw is first crushed and crushed to a particle size of 2 cm-10 cm.

[0073] The process of producing furfural from the rice straw in this embodiment includes the following steps:

[0074] (1) After the rice straw raw material is crushed and pretreated, under the catalysis of hydrogen peroxide, an organic acid solution with a total acid concentration of 80 wt% is used to cook the treated rice straw raw material. In this embodiment, the organic acid The mass ratio of acetic acid and formic acid in the liquid is 1:1, and the mass of the hydrogen peroxide accounts for 6 wt% of the mass of the straw raw material.

[0075] Control the reaction temperature at 105°C, react for 50 minutes, the solid-liquid mass ratio is 1:8, and perform the first solid-liquid separation of the obtained reaction liquid;

[0076] (2) Add the solid obtained from the first solid-liquid separation to a mixed acid solution composed of formic acid and acetic acid with a total acid con...

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Abstract

The invention relates to a method for preparing furfural, and in particular relates to a method for producing furfural by comprehensively utilizing a biomass raw material. The method comprises the following steps of: under the condition that hydrogen peroxide is used as the catalyst, boiling the biomass raw material in an organic acid formed by formic acid and acetic acid so as to obtain a sugar solution; carrying out dehydration dehydration reaction on the obtained sugar solution, subsequently carrying out solid-liquid separation on the obtained liquid, and further rectifying to obtain the finished furfural, wherein the obtained solid is a byproduct, namely, biochar. According to the method, the whole system is under liquid reaction when the sugar solution is dehydrated into the furfural, and as the water does not need to be heated into steam to carry out the separation of furfural stoste and the whole system has no heat loss, the whole reaction is lower in energy consumption; and moreover the process can be used for producing biochar, so that the economic benefits and environmental benefits of companies are increased.

Description

Technical field [0001] The invention relates to a method for preparing furfural, in particular to a method for comprehensively utilizing biomass raw materials to prepare furfural and producing carbon. Background technique [0002] Furfural, also known as furan formaldehyde, consists of two double bonds and one aldehyde group on the furan ring. This unique chemical structure can cause it to undergo oxidation, hydrogenation, chlorination, nitration and condensation reactions, thereby generating many chemicals Products, so they are widely used in many production fields such as pesticides, medicine, petrochemicals, food additives, and casting. [0003] Furfural is produced from plant fibers rich in pentosans, such as corn cobs, corn stalks, rice straw, bagasse, cottonseed hulls, straws, etc. as raw materials. The principle is that pentosans in plant fibers are first hydrolyzed into pentoses. The pentose is then dehydrated to form furfural. [0004] At present, the production process of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/50C10B57/06C10B53/02
CPCY02E50/14Y02E50/10
Inventor 唐一林江成真高绍丰刘洁马军强
Owner JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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