Biomass hydrogen-donating pyrolysis technique of naphthenic base oil in presence of hydrogen-donating distillate oil

A biomass and distillate technology, which is applied in the petroleum industry, biofuels, special forms of dry distillation, etc., can solve problems such as poor quality, reduced coke yield, and high oxygen content in bio-oil, so as to improve quality and reduce coke yield , the effect of reducing the oxygen content

Active Publication Date: 2013-08-21
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies of the existing biomass pyrolysis process, using naphthenic petroleum fractions as hydrogen-supplying fractions to pyrolyze biomass. Compared with biomass pyrolysis alone, the yield of bio-oil and conversion rate, reduce coke yield, and overcome the shortcomings of high oxygen content and poor quality of bio-oil in the past

Method used

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  • Biomass hydrogen-donating pyrolysis technique of naphthenic base oil in presence of hydrogen-donating distillate oil

Examples

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Embodiment 1

[0012] Example 1, waste sawdust in the wood factory is used as raw material, after washing and drying, it is preheated to 120°C and then enters from the bottom of the pyrolysis reactor with a volume space velocity of 1.0h -1 , Control the reaction temperature in the reactor to 350°C. The bio-oil and solid coke produced were reacted and collected, and the yield of bio-oil was calculated to be 29.0%, the yield of coke was 50.4%, and the conversion rate of sawdust was 49.6%. The elemental analysis of the bio-oil showed that the oxygen element content was 37.2%.

Embodiment 2

[0013] Example 2, waste sawdust in the wood factory was used as raw material, washed and dried and mixed with distillate oil at 400-460°C in Venezuelan crude oil, wherein the mass of hydrogen-donating distillate accounted for 5% of the mass of sawdust. The mixture is preheated to 120°C and enters from the bottom of the pyrolysis reactor with a volume space velocity of 1.0h -1 , Control the reaction temperature in the reactor to 350°C. Reaction and collection of bio-oil and solid coke, deducting the hydrogen-donating agent alone conversion blank after calculation, the yield of bio-oil converted from sawdust in the reaction was 31.0%, the yield of coke was 40.8%, and the conversion rate of sawdust was 59.2% . The elemental analysis of the bio-oil showed that the oxygen content was 34.6%.

Embodiment 3

[0014] Example 3, waste sawdust in the wood factory was used as raw material, washed and dried, mixed with 460-500°C distillate oil in Venezuelan crude oil, wherein the mass of hydrogen-donating distillate accounted for 10% of the mass of sawdust. The mixture is preheated to 120°C and enters from the bottom of the pyrolysis reactor with a volumetric space velocity of 0.5h -1 , control the reaction temperature in the reactor at 380°C, react and collect bio-oil and solid coke, calculate and deduct the hydrogen-donating agent alone conversion blank, get the yield of bio-oil converted from sawdust in the reaction is 34.7%, and the yield of coke is 34.7%. It was 38.3%, and the sawdust conversion rate was 61.7%. The elemental analysis of the bio-oil showed that the oxygen element content was 32.5%.

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Abstract

The invention discloses a technical process of biomass hydrogen-donating pyrolysis in the presence of hydrogen-donating distillate oil. The technique adopts a naphthenic base oil fraction as the hydrogen-donating fraction, proportionally mixes the biomass and the naphthenic base oil hydrogen-donating distillate oil, and carries out hydrogen-donating pyrolysis at 350-400 DEG C. The hydrogen-donating distillate oil is selected from one or more sections of 400-520 DEG C fraction of the naphthene base crude oil. In the hydrogen-donating pyrolysis process, the biomass carries out sufficient chemical conversion and redistribution of carbon, hydrogen and oxygen, thereby being beneficial to enhancing the light oil yield and lowering the coke yield in the pyrolysis process; and besides, more oxygen element in the biomass is distributed in water molecules, thereby enhancing the quality of bio-oil, and being beneficial to deep processing and utilization of bio-oil.

Description

technical field [0001] The invention relates to a method for effectively utilizing biomass energy, in particular to a biomass pyrolysis process in the presence of hydrogen-supplying distillate oil. Background technique [0002] Today's energy crisis has become an international problem. At the same time, the widespread use of fossil energy, including oil, natural gas, and coal, has caused many environmental problems such as the greenhouse effect, ozone hole, and air pollution. Biomass energy, as a renewable and clean new energy source, is an ideal fossil alternative fuel, and has attracted the attention of countries all over the world in recent years. [0003] Biomass is the organic matter produced by plants through photosynthesis. It is the carrier of biomass energy and the only renewable energy that can be stored and transported. The organic matter produced by the solar energy fixed by plants on the earth is equivalent to 3×10 21 The energy of J is about 10 times of the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C10B53/02
CPCY02E50/14Y02E50/10
Inventor 刘东阎子峰宋林花刘华吕仁庆程小玲王晨杜辉李庆银李明姚德良张道祥
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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