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Gas-liquid-dual-phase discharging hydrofining method for bio-oil

A technology of hydrofining and bio-oil, which is applied in the fields of fatty acid hydrogenation, liquid carbon-containing fuel, fatty acid preparation/refining, etc. It can solve the problems of easy coking of catalysts, harsh reaction conditions, poor quality of bio-oil, etc., and achieve large reserves, Effects of quality improvement and severity reduction

Inactive Publication Date: 2016-12-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of poor bio-oil quality, easy coking of the catalyst and harsh reaction conditions, etc., the present invention proposes a gas-liquid two-phase discharge hydrogenation method for refining bio-oil. Realize the hydrodeoxygenation reaction between hydrogen and bio-oil, make full use of high-energy electrons to play the role of "energy catalysis", replace the adsorption and dissociation of catalysts in the traditional catalytic hydrogenation process, generate atomic hydrogen, and C= contained in bio-oil compounds C, C=O and other unsaturated π bonds or conjugated π bonds undergo a hydrogenation reaction to saturate them, and then hydrogenate the C-O bond to form a C-H bond, so as to achieve hydrogenation under normal pressure, low temperature, and no catalyst. Technical purpose of deoxygenated refined bio-oil

Method used

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  • Gas-liquid-dual-phase discharging hydrofining method for bio-oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Crush 150g of rape stalks into particles with a particle size of 0.3mm and place them in a pyrolysis furnace. Set the heating rate at 20°C / min and the final pyrolysis temperature at 500°C for pyrolysis and liquefaction reaction. Take 30g of bio-crude oil, Added to the gas-liquid two-phase discharge system;

[0031] (2) Before the test, the hydrogen-helium mixture (V H2 :V He =2:3), the flow rate is set to 60mL / min, it is passed into the gas-liquid two-phase discharge system, the air in the discharge system is completely eliminated, and the exhaust time is maintained for 6 minutes;

[0032] (3) Adjust the discharge frequency to 9.5kHz, the working voltage to 20kV, the flow rate of hydrogen-helium mixture to 60mL / min, and the reaction time to 1.5h;

[0033] (4) After the reaction is completed, continue to feed the gas, cool the gas-liquid two-phase discharge system to room temperature, collect the liquid product, and add the organic solvent methylene chloride to the...

Embodiment 2

[0037] (1) Crush 150g of millet rice husks into particles with a particle size of 0.3mm and place them in a pyrolysis furnace, set the heating rate at 20°C / min, and set the final temperature of pyrolysis at 500°C for pyrolysis and liquefaction reaction. Crude oil, added to the gas-liquid two-phase discharge system;

[0038] (2) Before the test, the hydrogen-helium mixture (V H2 :V He =2:3), the flow rate is set to 80mL / min, it is passed into the gas-liquid two-phase discharge system, the air in the discharge system is removed, and the exhaust time is kept for 6 minutes;

[0039](3) Adjust the discharge frequency to 9.5kHz, the working voltage to 20kV, the flow rate of the hydrogen-helium mixture to 60mL / min, and keep the reaction time for 1.5h;

[0040] (4) After the reaction is completed, continue to feed the gas, cool the gas-liquid two-phase discharge system to room temperature, collect the liquid product, and add the organic solvent methylene chloride to the liquid produ...

Embodiment 3

[0044] (1) Crush 150g of pine wood chips into particles with a particle size of 0.5mm and place them in a pyrolysis furnace. Set the heating rate at 20°C / min and the final pyrolysis temperature at 500°C for pyrolysis and liquefaction reaction. Take 30g of bio-crude oil, Added to the gas-liquid two-phase discharge system;

[0045] (2) Before the test, the hydrogen-helium mixture (V H2 :V He =2:3), the flow rate is set to 60mL / min, it is passed into the gas-liquid two-phase discharge system, the air in the discharge system is completely eliminated, and the exhaust time is maintained for 6 minutes;

[0046] (3) Adjust the discharge frequency to 9.5kHz, the working voltage to 25kV, the flow rate of the hydrogen-helium mixture to 60mL / min, and the reaction time to 1.5h;

[0047] (4) After the reaction is completed, continue to feed the gas, cool the gas-liquid two-phase discharge system to room temperature, collect the liquid product, and add the organic solvent methylene chlorid...

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Abstract

The invention discloses a gas-liquid-dual-phase discharging hydrofining method for bio-oil, and belongs to the technical field of biomass energy and preparing thereof. The gas-liquid-dual-phase discharging hydrofining method is characterized by including the steps that biomass pyrolytic oil and hydrogen-helium mixed gas serve as raw materials, bio-oil is subjected to hydrofining with gas-liquid-dual-phase discharging low-temperature plasma as a technology, the obtained liquid product is extracted through an organic solvent, finally the organic solvent in the organic solvent phase is removed with a reduced pressure distillation method, and the target product, namely, the bio-oil is obtained. According to the method, the novel gas-liquid-dual-phase discharging low-temperature plasma chemical treatment technology is adopted, a hydrogenation reaction at the normal temperature and normal pressure under the catalyst-free condition, the energy consumption and the investment cost in the reaction system process are reduced, the quality of the bio-oil obtained through hydrogenation is improved, waste crops are recycled, circulated low-carbon economy and energy sustainable development are guided, and application prospects are broad.

Description

technical field [0001] The invention belongs to the technical field of biomass energy and its preparation, and relates to a method for gas-liquid two-phase discharge hydrogenation refining bio-oil, in particular to a coupling method of dielectric barrier discharge, hydrogen gas and bio-oil two-phase mixing for hydrogenation Process for refining bio-oil. Background technique [0002] With the rapid development of the global economy and society, fossil energy is consumed in large quantities and is gradually exhausted. The environmental and climate problems caused by its overuse are becoming more and more serious. Energy shortage and environmental pollution have become the main contradictions restricting the sustainable development of human society. Looking for Alternative clean energy has become a global consensus. Biomass resources are the fourth largest energy source after coal, oil, and natural gas. It has a wide range of sources and abundant reserves, mainly including agr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/12C11C1/08C11C1/10C10L1/02
CPCC10L1/02C11C1/08C11C1/10C11C3/12
Inventor 赵卫东黄健泉倪康张潇尹赖志豪蔡忆昔李小华
Owner JIANGSU UNIV