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Method for preparing biological gasoline from biomass

A bio-gasoline, biomass technology, used in fuels, petroleum industry, liquid carbonaceous fuels, etc.

Active Publication Date: 2014-10-22
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calculated at the current rate of consumption, the proven oil reserves on the earth can only sustain the demand for 40-60 years

Method used

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  • Method for preparing biological gasoline from biomass
  • Method for preparing biological gasoline from biomass
  • Method for preparing biological gasoline from biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0028] The reaction equation for preparing levulinic acid by hydrolysis of biomass is as follows:

[0029] (C 6 H 10 O 5 ) n →nC 5 H 8 O 3 (Levulinic acid)+nCH 2 O 2

[0030] Put the raw material biomass (sawdust, bagasse, sawdust, cellulose, straw, absorbent cotton, fructose, glucose or starch) and 5% hydrochloric acid aqueous solution with a mass concentration of 5% into the autoclave at a mass ratio of 1:10. At 140°C, 200°C or 220°C, the hydrolysis reaction is carried out for 5, 10 or 240 minutes, and the residue is filtered off after cooling to obtain a biomass hydrolysate. The product is qualitatively and quantitatively analyzed by waters UPLC. The reaction conditions and results of biomass hydrolysis to prepare levulinic acid are shown in Table 1, No. 1-8.

[0031] Table 1 Reaction conditions and results for the preparation of levulinic acid by hydrolysis of biomass in Examples 1-8

[0032] Example

[0033] 2. Preparation of Angelica Lactone by Dehydration of Levulinic Acid...

Embodiment 9-13

[0035] The reaction equation of levulinic acid dehydration to prepare angelica lactone is as follows:

[0036] C 5 H 8 O 3 (Levulinic acid)→C 5 H 6 O 2 (Angelica lactone)+H 2 O

[0037] Weigh 25g of levulinic acid into the flask, and add 3% of its mass of catalyst H 3 PO 4 Or ZSM-5, heat up to 130°C, 160°C, 175°C or 180°C under stirring conditions, react for 60min, 120min, 150min or 180min, control the vacuum degree of the reaction system, and return the levulinic acid in the gas phase of the reaction system to the reaction In the system, angelica lactone vapor is distilled from the distillation head, and the condensed liquid is collected. The product uses watersUPLC for qualitative and quantitative analysis. The reaction conditions and results of the dehydration of levulinic acid to prepare angelica lactone are shown in Table 2 with No. 9-13.

[0038] Table 2 Example 9-13 Reaction conditions and results of levulinic acid dehydration to prepare angelica lactone

[0039] Example ...

Embodiment 14-21

[0042] The reaction equation for preparing angelica lactone polymer by polymerization of angelica lactone is as follows:

[0043] nC 5 H 6 O 2 (Angelica lactone)→C 5n H 6n O 2n (Angelica lactone polymer)

[0044] Weigh 30g of angelica lactone into the flask, raise the temperature to 60°C, 80°C, 100°C, 120°C, 140°C or 160°C, add 3% by mass of catalyst K under stirring conditions 2 CO 3 , React for 1min, 5min, 30min, 120min or 180min to obtain angelica lactone polymer. The product is qualitatively and quantitatively analyzed by waters UPLC. The reaction conditions and results of angelica lactone polymerization to prepare angelica lactone polymer are shown in Table III No. 14-21.

[0045] Table 3 Example 14-21 Angelica lactone polymerization reaction conditions and results

[0046]

[0047] 4. Hydrogenation of angelica lactone polymer to produce biogasoline

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Abstract

The invention relates to a method for preparing biological gasoline from biomass, which comprises the following steps: biomass hydrolysis: hydrolyzing biomass in 0.1-10% dilute acid at 140-220 DEG C for 5-240 minutes to prepare levulinic acid; carrying out dehydration reaction on the levulinic acid at 130-180 DEG C for 60-180 minutes under the action of 0.1-5% liquid acid, acidic ionic liquid or molecular sieve to prepare angelica lactone; carrying out polymerization reaction on the angelica lactone at 60-160 DEG C for 1-180 minutes under the action of 0.1-5% inorganic alkali to prepare an angelica lactone polymer; and carrying out hydrogenation reaction on the angelica lactone polymer at 200-400 DEG C for 4-60 hours under the action of a 0.1-5% catalyst to obtain the final product biological gasoline. The method can greatly enhance the carbon utilization ratio, reduce the carbon dioxide emission, and lower the dependence on petroleum and other nonrenewable resources. The method has the advantages of short technical process and mild reaction conditions; and the product has the advantages of high yield and high quality.

Description

Technical field [0001] The invention belongs to the field of new energy biogasoline preparation, and specifically relates to a biomass as a raw material to prepare levulinic acid by hydrolysis of biomass, dehydration of levulinic acid to prepare angelica lactone, then polymerize to prepare angelica lactone polymer, and finally polymer Hydrodeoxygenation method for preparing biogasoline. Background technique [0002] In recent years, the rapid growth of the world economy has been accompanied by the depletion of fossil energy sources and the deteriorating environment of human living. Driven by the petrochemical economy, the world economy has grown at an unprecedented rate. However, the energy crisis and environmental crisis brought about by this have become increasingly prominent. Calculated at the current rate of consumption, the proven oil reserves on the earth can only sustain the demand for 40-60 years. Therefore, the shortage of fossil fuels in the future is a reality that a...

Claims

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Application Information

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IPC IPC(8): C10L1/02
Inventor 晏冬霞辛加余吕兴梅周清石春艳张锁江
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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