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Green fuel oil and preparation method thereof

A kind of fuel oil and green technology, applied in the field of green fuel oil and its preparation, can solve the problems of high oxygen content, difficult continuous production, high corrosion, etc., and achieve the effect of avoiding environmental pollution

Active Publication Date: 2010-09-15
张小红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the bio-tar produced has the following disadvantages: 1. Highly corrosive, with a pH value of 2 to 3, and the corrosiveness will increase sharply with the increase of temperature
3. High oxygen content, at 35-55%
4. Instability, long-term storage or high temperature will cause polymerization to form solid lumps and water phase
5. The calorific value is low, and the high calorific value is 14-20MJ / kg
6. Difficult to miscible with petroleum products such as gasoline and diesel
[0009] Chinese patent 200910153121.9 adds methanol or ethanol with a weight percentage of 30-95% in the reaction device, and there is a process of heating and cooling, which is difficult for continuous production
[0010] Chinese patent 200410027339.7 Green fuel oil is composed of a certain proportion of diesel oil or kerosene, fatty acid, water and modifiers. The source of fatty acid is limited, and the cost of diesel oil and kerosene is relatively high

Method used

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Experimental program
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Embodiment 1

[0038] See figure 1

[0039] A. Hydrodeoxygenation: the biotar obtained from the slow pyrolysis or gasification of straw;

[0040] In the initial reaction, because there is no hydrodeoxygenated oil phase in the hydrodeoxygenation reactor 1—the ebullating bed reactor, 0.15kg propanol that promotes the mutual dissolution of biotar and hydrocarbons is added as the initial reaction Reactive additives enable biotar and hydrocarbons to form a phase under the action of external force. Hydrodeoxygenated oil phase substances will continue to be generated. When such an oil phase is formed, there is no need to add medium substances, so these medium substances are only used as additives for the initial reaction;

[0041] 1kg of biotar and 3kg of hydrocarbons are continuously added to the oil phase that has been hydrodeoxygenated, 300g of Cu / SiO 2 In the hydrodeoxygenation reactor 1 where the hydrodeoxygenation catalyst exists, the reaction temperature is 250° C. and the pressure is 10 ...

Embodiment 2

[0050] A. Hydrodeoxygenation: The biotar and hydrocarbons obtained during the rapid pyrolysis of corn stalks are continuously added to the hydrodeoxygenation reactor 1 in which the hydrodeoxygenated oil phase exists in a ratio of 2:1 —Continuous Stirred Tank Reactor (CSTR), in the case of stirring, the three dissolve into one phase. If there is a lack of hydrodeoxygenated oil phase, biotar, hydrocarbons and amyl alcohol can be added in a ratio of 2:1:5 as initial reactants. Under the control of the gas flow controller, hydrogen and nitrogen as a reference gas flow into the reactor continuously, the reaction pressure is controlled by the gas pressure regulating valve, and the reacted gas flows out of the reactor through the gas pressure regulating valve. Under the reaction conditions of 320°C and 11MPa, in 1% NiMo / Al by weight of biotar 2 o 3 Under the action of the catalyst, the biotar is partially deoxygenated. The properties of the biotar obtained from the rapid pyrolysis...

Embodiment 3

[0066] A. Hydrodeoxygenation: Add 3 kg of biotar and 1 kg of hydrocarbons obtained by rapid thermal cracking of bagasse, wood chips, straw, corn stalks, bark, wood, recycled wood, etc. Oil phase, NiMo / SiO 2 In the hydrodeoxygenation reactor with 9g of hydrodeoxygenation catalyst 1—in the circulating fixed bed reactor, the temperature is 400°C, the pressure is 16MPa and under the action of the catalyst, the weight hourly space velocity of the reaction is 4h -1 , the biotar is partially deoxygenated under the action of the hydrodeoxygenation catalyst, and the water phase formed by the deoxygenation is separated from the oil phase; the liquid treated by this equipment is divided into two layers in the separator 2. The lower layer is the water phase, which is removed and transported to the chemical substance extraction device 4—the physical adsorption device; the upper layer is the oil phase, and the oil phase is sent to the hydrocracking reactor 3—the circulating fixed bed reacto...

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Abstract

The invention relates to green fuel oil and a preparation method thereof. The conventional biomass thermal cracking technology converts low-grade biomass energy into liquid biomass thermal cracking tar, namely biological tar. The produced biological tar has high corrosion, water content of 15 to 35 percent, high oxygen content, instability and lower heat value. The biological tar obtained by thermal cracking of biomass raw materials and hydrocarbon substances are added into a reactor together, then the green fuel oil of gasoline, diesel oil and the like is obtained by hydrogenated de-oxidation and hydrogenated cracking processes under the action of a catalyst, and chemical substances in the tart are reclaimed. The raw materials are un-edible substances, and have the characteristics of high reaction speed, low reaction temperature, high yield and low equipment investment, so the green fuel oil produced by the raw materials has high quality, the oxygen content of the fuel oil is less than 0.1 percent, the heat value is 45 to 48MJ / kg, the total acidity is less than 0.5mg KOH / g sample, the fuel oil is mutually soluble with the gasoline and the diesel oil in any ratio, and the yield ofthe fuel oil can be up to over 40 percent.

Description

technical field [0001] The invention relates to the field of biomass energy, in particular to a green fuel oil and a preparation method thereof. Background technique [0002] With the development of society, human beings have an increasing demand for liquid energy, but the existing oil reserves are limited. At the same time, the use of petroleum will increase a large amount of carbon dioxide emissions into the air. How to meet the growing demand for energy and reduce carbon emissions has attracted great attention from governments around the world, and more and more renewable energy has attracted people's attention. Pay attention to. [0003] Biomass energy is a renewable energy with great potential but not yet fully exploited. The good development and utilization of biomass energy can alleviate the pressure on energy and the environment, and can establish a sustainable energy system. A large amount of biomass feedstock is produced globally every year. According to China ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/04C10G65/12
Inventor 张小红
Owner 张小红
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