A kind of method that takes biomass as raw material to prepare biogasoline

A biogasoline, biomass technology, applied in the field of new energy biogasoline preparation

Active Publication Date: 2015-08-19
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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  • A kind of method that takes biomass as raw material to prepare biogasoline
  • A kind of method that takes biomass as raw material to prepare biogasoline
  • A kind of method that takes biomass as raw material to prepare biogasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0028] Biomass hydrolysis to prepare levulinic acid reaction equation is as follows:

[0029] (C 6 h 10 o 5 ) n →nC 5 h 8 o 3 (levulinic acid)+nCH 2 o 2

[0030] The raw material biomass (wood chips, bagasse, sawdust, cellulose, straw, absorbent cotton, fructose, glucose or starch) and the aqueous hydrochloric acid solution with a mass concentration of 5% are put into the autoclave according to the mass ratio of 1:10, and the temperature is raised. To 140°C, 200°C or 220°C, hydrolysis reaction for 5, 10 or 240min, after cooling, filter to remove the residue to obtain biomass hydrolyzate. The product was 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 embodiment 1-8 biomass hydrolysis prepares the reaction conditions and the result of levulinic acid

[0032] Example

[0033] 2. Dehydration of levulinic acid to prepar...

Embodiment 9-13

[0035] The dehydration of levulinic acid prepares angelica lactone reaction equation as follows:

[0036] C 5 h 8 o 3 (levulinic acid)→C 5 h 6 o 2 (Angelica lactone)+H 2 o

[0037] The levulinic acid that takes by weighing 25g is put into the flask, adds its mass 3% catalyst H 3 PO 4or 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 reflux the levulinic acid in the gas phase of the reaction system to the reaction system, angelica lactone vapor distills from the distillation head, and collects the condensed liquid. The product was qualitatively and quantitatively analyzed by waters UPLC. The reaction conditions and results of the dehydration of levulinic acid to prepare angelica lactone are shown in the serial numbers 9-13 in Table 2.

[0038] Table two embodiment 9-13 levulinic acid dehydration prepares the reaction condition and the result of a...

Embodiment 14-21

[0042] Angelica lactone polymerization prepares angelica lactone polymer reaction equation as follows:

[0043] c 5 h 6 o 2 (Angelica lactone)→C 5n h 6n o 2n (Angelica lactone polymer)

[0044] Weigh 30g of angelica lactone into a flask, heat up to 60°C, 80°C, 100°C, 120°C, 140°C or 160°C, add 3% of its mass catalyst K under stirring condition 2 CO 3 , react for 1 min, 5 min, 30 min, 120 min or 180 min to obtain angelica lactone polymer. The product was 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 3, No. 14-21.

[0045] Table three embodiment 14-21 reaction conditions and the result of angelica lactone polymerization

[0046]

[0047] 4. Preparation of biogasoline by hydrogenation of angelica lactone polymer

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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 method of preparing levulinic acid by hydrolyzing biomass with biomass as raw material, dehydrating levulinic acid to prepare angelica lactone, then polymerizing to prepare angelica lactone polymer, and finally polymerizing Method for preparing biogasoline by hydrodeoxygenation. Background technique [0002] In recent years, accompanied by the rapid growth of the world economy, the depletion of fossil energy and the deterioration of the living environment of human beings. Driven by the petrochemical economy, the world economy is growing at an unprecedented rate. However, the resulting energy crisis and environmental crisis are becoming increasingly prominent. Calculated at the current consumption rate, the proven oil reserves on the earth can only maintain the demand for 40-60 years. Therefore, the shortage of fossil fuels in the future is a realit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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