Method for preparing petroleum alternative energy through straw liquidation

A technology to replace energy and straw, applied in chemical instruments and methods, preparation of organic compounds, petroleum industry, etc., can solve problems such as easy gelation, poor burning effect of esters, and difficult penetration of liquefaction reagents.

Active Publication Date: 2015-05-20
广饶县泽润环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been cases of using polyols and liquefaction agents to treat biomass, but because the cell wall structure of plant straw is very tight, it is difficult for liquefaction agents to penetrate into the raw material, and the obtained esters have poor combustion effect and are easy to gel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Crush the straw until the particle size is less than 10um, add methanol, straw, and 2% sulfuric acid into the reaction kettle at a mass ratio of 1:10:5 at 120°C, and react in a sealed environment at 0.21Mpa for 1 hour, then let it stand, and divide liquid; the upper layer is the oil phase, the middle layer is the water phase, and the lower layer is the solid phase. The upper layer is the obtained product, the middle layer enters the reactor again for the next batch reaction, and the lower layer is filtered to obtain the filter residue as lignin; the product is tested by GC-MS, elemental analyzer and oxygen bomb calorific value meter, and the upper layer product is mainly short Chain lipids, the lower layer is mainly hydrocarbon phenols and lipids containing benzene rings. The carbon content of the upper layer is 70%, and the calorific value reaches 8.5×10 4 kcal. The content of each component in the lower layer (percentage by weight): 80% carbon content, 15% oxygen co...

Embodiment 2

[0020] Crush the straw to a particle size of less than 10um, add ethanol, straw, and 2% sulfuric acid into the reactor at 150°C in a mass ratio of 1:10:2, add the water phase in Example 1 into the reactor, and After airtight reaction at 0.49Mpa for 1 hour, stand still and separate the liquid; the upper layer is the oil phase, the middle layer is the water phase, and the lower layer is the solid phase. The upper layer is the obtained product, the middle layer enters the reactor again for the next batch reaction, and the filter residue obtained by filtering the lower layer is lignin; the carbon content of the upper layer is 78%, and the calorific value reaches 9.2×10 4 kcal. The content of each component in the lower layer (percentage by weight): carbon content 76%, oxygen content 17%, hydrogen content 5%, other 2%.

Embodiment 3

[0022] Crush the straw until the particle size is less than 10um, add methanol, straw, and 2% phosphoric acid to the reaction kettle at a mass ratio of 1:10:5 at 160°C, and react in a sealed container at 0.62Mpa for 1 hour, then let stand and separate the liquid; The upper layer is the oil phase, the middle layer is the water phase, and the lower layer is the solid phase. The upper layer is the obtained product, the middle layer enters the reactor again for the next batch reaction, and the filter residue obtained by filtering the lower layer is lignin; the carbon content of the upper layer is 77%, and the calorific value reaches 8.1×10 4 kcal. The content of each component in the lower layer (percentage by weight): carbon content 86%, oxygen content 10%, hydrogen content 3.5%, other 0.5%.

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PUM

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Abstract

The invention provides a method for preparing petroleum alternative energy through straw liquidation. The method comprises the following steps: (1) crushing straws into powder with the particle size of less than 10 micrometers for standby application; (2) adding micromolecule monohydric alcohol, straw powder and sulfuric acid or phosphoric acid with the mass fraction of 0.5-2% in a mass ratio of 1: 10: 5 to a reaction kettle, and reacting for 1 to 5 hours at the temperature of 120-220 DEG C and the pressure of 0.2-1.6Mpa, wherein the micromolecule monohydric alcohol is methyl alcohol, ethyl alcohol or propyl alcohol; and (3) standing reacted feed liquid, and separating liquid, wherein an oil phase separated out from an upper layer is the petroleum alternative energy. The method has the advantages that the straws are treated under an acidic condition so as to achieve the purpose of loosening celluloses, and meanwhile the micromolecule monohydric alcohol is used as an alcoholysis agent at the high temperature and the high pressure, so that the ester linkage of obtained acetyl propionate is shortened, obtained esters are beneficial to burning, the possibility of colloidizing is reduced, and the yield is increased.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of biomass, and in particular relates to a method for preparing petroleum substitute energy by alcoholysis and liquefaction of straw. technical background [0002] The use of waste biomass, especially plant straw, to prepare petroleum alternative energy has attracted widespread attention, and some institutions have begun to study industrial production. The main chemical components of straw are cellulose, hemicellulose and lignin, which account for more than 90% of the straw mass. Although the composition of straw is relatively complex, the main component is hydrocarbons, which can be converted into utilizable chemical raw materials by liquefaction and used to synthesize various polymer materials. There have been cases of using polyols and liquefaction agents to treat biomass. However, due to the very tight cell wall structure of plant straw, it is difficult for liquefaction agents to pene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/716C07C67/00C10L1/02
Inventor 张玉森樊茂祥陈鑫成
Owner 广饶县泽润环保科技有限公司
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