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Preparation method for biological oil

A technology for bio-oil and bio-heavy oil, which is applied in the preparation of liquid hydrocarbon mixtures, biofuels, chemical instruments and methods, etc., can solve the problems of high cost and impact of quality improvement, and achieve the effect of improving the absorption rate of temperature rise

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method consumes a large amount of hydrogen to remove oxygen from bio-oil, but obtains non-energy water. Such a high upgrading cost affects the practical application

Method used

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  • Preparation method for biological oil

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Effect test

Embodiment 1

[0029] First weigh a certain amount of silica sol and add water to dilute to 5% aqueous sol solution, then add а-Al to the silica sol solution 2 o 3 Powder (diameter less than 1μm), ZrO 2 Powder (diameter less than 0.5 μm), then add appropriate amount of ethanol, put it into a ball mill for wet grinding. After wet milling for 24 hours, dry it. The powder passed through a 60-mesh sieve is calcined at 600°C for 2 hours, and then shaped as required. The molded body was sintered at 1200°C for 2 hours in the atmosphere, and then slowly cooled to room temperature with the furnace temperature. Two kinds of microwave additives TC-1 and TC-2 were prepared according to the different proportions of raw materials, and the composition of TC-1 was 65%Al 2 o 3 , 35%SiO2 2 , 5%ZrO 2 , TC-2 composition is 85%Al 2 o 3 , 10%SiO2 2 , 5%ZrO 2 .

Embodiment 2

[0031] Mix 100g wood chips (5mm) with TC-1 according to the mass ratio of 1:0.1 and send them into the microwave cracking reactor. First, the biomass was preheated at 120°C for 30 minutes, and the power density was 1×10 5 W / m 3, then heat up to 400°C for 4 minutes, and then heat up to 500°C for pyrolysis until no gas is produced. The power density of the entire pyrolysis process is 4×10 5 W / m 3 . The gasification products formed by pyrolysis were condensed and separated into water phase and oil phase directly after standing still. The collected oil phase was 4.3g of bio-heavy oil with a water content of 0.8%, and the water phase was 26.4g with a water content of 39.5%. Under a nitrogen atmosphere, calcium oxide was added to the above water phase and stirred at 80°C for 60 minutes, wherein the mass ratio of water phase to calcium oxide was 1:0.2, then the temperature was raised to 160°C, and the reaction was distilled for 20 minutes. After the reaction was completed, solid...

Embodiment 3

[0033] Mix 100g wood chips (5mm) with TC-2 according to the mass ratio of 1:1 and send them into the microwave cracking reactor. First, the biomass was preheated at 220°C for 5 minutes, and the power density was 3×10 5 W / m 3 , then heat up to 350°C for 9 minutes, and then heat up to 600°C until no gas is generated. The power density of the whole pyrolysis process is 10×10 5 W / m 3 . The gasification products formed by pyrolysis were condensed and separated into water phase and oil phase directly after standing still. The collected oil phase was 11.8g of bio-heavy oil with a water content of 1.2%, and the water phase was 53.6g with a water content of 34.9%. Under a nitrogen atmosphere, calcium oxide was added to the above water phase and stirred at 80°C for 120 minutes, wherein the mass ratio of water phase to calcium oxide was 1:0.05, then the temperature was raised to 110°C, and the reaction was distilled for 60 minutes. After the reaction was completed, the solid-liquid ...

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Abstract

The invention discloses a preparation method for biological oil. The preparation method comprises the following steps: uniformly mixing a biomass raw material with a microwave additive; performing microwave preheating treatment; performing microwave pyrolysis; condensing a generated pyrolysis volatile component; performing oil-water separation to obtain an oil phase which is biological heavy oil and a water phase which is water containing biological light oil; performing reactive distillation on the water phase to remove the moisture to obtain low-moisture biological light oil. The biological oil obtained by the method is high in yield, low in moisture content and high in heat value, and can be directly used as fuel oil.

Description

technical field [0001] The invention belongs to the field of biochemical industry, and in particular relates to a preparation method of bio-oil. Background technique [0002] Biomass pyrolysis can convert low-energy-density biomass raw materials into liquid fuels with high calorific value. Low and poor stability, can not be directly used as vehicle fuel. In particular, the high water content of bio-oil not only greatly reduces its combustion performance, but also causes rapid deactivation of hydrogenation or cracking catalysts used in the upgrading process. From the perspective of the composition and structure of bio-oil, carboxylic acids and phenols in bio-oil can form hydrogen bonds with water, so that the separation of water in bio-oil cannot be achieved by conventional methods. [0003] In recent years, bio-oil with lower water content can be obtained by using multi-stage condensation system to conduct online condensation and separation of biomass pyrolysis volatiles. ...

Claims

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Application Information

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IPC IPC(8): B01J19/12C10B53/02
CPCB01J19/126B01J2219/00941C10G1/00C10G2300/1011Y02E50/10
Inventor 王鑫李政张全乔凯王领民
Owner CHINA PETROLEUM & CHEM CORP
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