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Method for producing aromatic hydrocarbon from biomass and composition product thereof

A biomass and biomass raw material technology, applied in the direction of hydrocarbon production from oxygen-containing organic compounds, organic chemistry, etc., can solve the problems of low carbon utilization rate, high hydrogen consumption, high raw material cost, etc., and achieve the effect of low total consumption

Active Publication Date: 2016-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is that the prior art has the problems of low carbon utilization rate, high hydrogen consumption, and high raw material cost, and provides a new method for generating aromatics from biomass

Method used

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  • Method for producing aromatic hydrocarbon from biomass and composition product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The raw material is 1 ton of papermaking sludge, with a dry base cellulose content of 61%. The papermaking sludge was fully stirred and mixed with 3.5 tons of 3% sulfuric acid aqueous solution, and the acid hydrolysis process was completed by stirring and reacting at 3.0 MPa and 205°C for 25 minutes. After the liquid phase product was separated, 275 kg of levulinic acid and 104.5 kg of formic acid. 104.5 kg of formic acid can be decomposed to obtain 4.5 kg of hydrogen.

[0047] In 25%Cu / 70%SiO 2 -5%Al 2 o 3 On the catalyst, the reaction pressure is 2.0MPa, the reaction temperature is 182°C, the molar ratio of hydrogen / levulinic acid is 30, and the space velocity of levulinic acid is 0.3h -1, the conversion rate of levulinic acid is 100%, the molar selectivity of γ-valerolactone is 96.8%, and the molar selectivity of methyl tetrahydrofuran is 2.1%. 275 kg of levulinic acid undergoes a hydrogenation reaction to generate 229 kg of γ-valerolactone and 4.3 kg of methyl ...

Embodiment 2

[0052] The raw material is 1 ton of bagasse, the dry base cellulose content is 52%, and the hemicellulose content is 27%. After fully pulverizing the bagasse, stir and mix with 3.5 tons of 1.5% hydrochloric acid aqueous solution, then add 1.2 kg of ferric chloride, and keep the mixed solution at 1.0 MPa and 180°C for 10 minutes under microwave heating conditions to complete the acid reaction. During the hydrolysis process, the liquid phase product can obtain 248 kilograms of levulinic acid, 95 kilograms of formic acid and 135 kilograms of furfural after separation. 95 kg of formic acid can be decomposed to obtain 4.1 kg of hydrogen.

[0053] On 0.5% Ru / C catalyst, the reaction pressure is 1.2MPa, the reaction temperature is 130°C, the molar ratio of hydrogen / levulinic acid is 10, and the space velocity of levulinic acid is 0.3h -1 , the conversion rate of levulinic acid was 89%, the molar selectivity of γ-valerolactone was 4.5%, and the molar selectivity of methyl tetrahydrof...

Embodiment 3

[0058] The raw material is 1 ton of municipal waste paper, and the dry base cellulose content is 92.1%. After these municipal waste papers are fully pulverized, they are stirred and mixed with 3.5 tons of 3.5% sulfuric acid aqueous solution, and then 13 kg of sodium sulfite is added, and the mixed solution is kept at 3.0 MPa and 205°C for 30 minutes under stirring conditions to complete the acidolysis process. After separation of the phase products, 503.5 kg of levulinic acid and 197.6 kg of formic acid were obtained. 197.6 kg of formic acid can be decomposed to obtain 8.5 kg of hydrogen.

[0059] In 0.1%Pd-15%Ni / 84.9%SiO 2 On the catalyst, the reaction pressure is 9.0MPa, the reaction temperature is 240°C, the hydrogen / levulinic acid molar ratio is 20, and the levulinic acid space velocity is 0.8h -1 , the conversion rate of levulinic acid was 93.9%, the molar selectivity of γ-valerolactone was 98.2%, and the molar selectivity of methyl tetrahydrofuran was 0.3%. 503.5 kg o...

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Abstract

The invention relates to a method for producing aromatics from biomass and a composition obtained by the method. The method comprises the following steps: a) catalytic conversion of biomass raw materials and separation of products to obtain levulinic acid, furfural and formic acid; b) contacting the levulinic acid obtained in step a) with an aromatization catalyst to obtain Aromatic stream I of toluene; c) optionally, levulinic acid obtained in step a) is contacted with a hydrogenation catalyst to obtain gamma-valerolactone and / or methyltetrahydrofuran; d) optionally, furfural obtained in step a) Contacting with a hydrogenation catalyst to obtain methyl tetrahydrofuran; e) Optionally, the γ-valerolactone obtained in step c) is contacted with an aromatization catalyst to obtain an aromatic hydrocarbon stream II containing benzene, toluene and xylene; f) optionally , the methyl tetrahydrofuran obtained in step c) and / or step d) is contacted with an aromatization catalyst to obtain an aromatic hydrocarbon stream III containing benzene, toluene and xylene. The method can be used in the industrial production of aromatics such as benzene, toluene and xylene from biomass containing cellulose and hemicellulose.

Description

technical field [0001] The invention relates to a method for producing aromatic hydrocarbons from biomass and a composition obtained by the method, in particular to a method capable of converting cellulose and hemicellulose in biomass into aromatic hydrocarbon mixtures and the composition obtained by the method. Background technique [0002] Aromatics such as benzene, toluene and xylene (BTX) are important basic organic chemical raw materials, and are widely used in many fields that promote national economic and social development. Currently, BTX is produced using petrochemical resources as raw materials, mainly through catalytic reforming and ethylene cracking by-products, and a small amount through coal chemical processes. In the long run, traditional petrochemical raw materials are non-renewable, and the use of petrochemical resources also increases greenhouse gas emissions, which is not in line with the green and low-carbon development strategy. [0003] Biomass is main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C15/04C07C15/06C07C15/08
Inventor 郑均林宋奇朱俊华徐旋孔德金祁晓岚
Owner CHINA PETROLEUM & CHEM CORP
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