Method for upgrading bio oil through barium neutralizer
A bio-oil and barium carbonate technology, which is applied in the petroleum industry, fatty acid production, liquid carbon-containing fuel, etc., can solve problems such as corrosion and difficulty in esterification reaction, and achieve reduced acid value, low oil moisture, increased calorific value and The effect of thermal stability
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Embodiment 1
[0038] The bio-oil used in Example 1 is obtained by rapid pyrolysis of rice husk, and its elemental composition is C (46.21%), H (6.20%), O (47.02%), N (0.57%); its density and viscosity are respectively 1.158 g / cm 3 , 20.37mPa·s. The oil parameters and components of bio-oil are shown in Table 1.
[0039] The calorific value of the bio-oil was measured by the oxygen bomb method, and the calorific value was determined by its maximum calorific value (HHV); the moisture was measured by the Karl-Fershaw method; the acidity was measured by the acid-base potentiometric titration method; the components and contents of the bio-oil were determined by GC - MS coupled instrument measurement, the calculation of the measurement results using the area normalization method.
[0040] The experimental device for decarboxylation and upgrading of bio-oil such as figure 1 shown. The device is composed of a tubular reaction furnace 5, quartz tube 6, heating program temperature controller 3, ni...
Embodiment 2
[0044] Put 100g of bio-oil in a 200ml flask, then add 25.6g of anhydrous barium hydroxide under the action of mechanical stirring, neutralize at room temperature for half an hour, then transfer all of it to a quartz boat, and place it in a tube-type reaction furnace. inside the tube. Open the protective gas helium cylinder to fully discharge the air in it; then start to heat up: from room temperature to 120°C, the heating rate is 5°C / min, and keep at 120°C for 60 minutes; then rise from 120°C to 400°C, heat up The rate is 3°C / min; continue to heat up to 600°C, the heating rate is 2°C / min, and keep at 600°C for 100 minutes. During the whole reaction process, the absorber was submerged in a low-temperature bath at 0°C, and butanol was used as the absorbent to condense and absorb the reaction product. After the reaction, 50 g of anhydrous magnesium sulfate was used to remove water from the upgraded bio-oil to obtain the upgraded bio-oil b. The oil parameters and components of t...
Embodiment 3
[0048] Put 100g of bio-oil in a 200ml flask, then add 70.7g of barium carbonate under the action of mechanical stirring, stir and neutralize at room temperature for half an hour, then transfer all of it to a quartz boat and place it in a quartz tube of a tubular reactor. Open the protective gas carbon dioxide cylinder to fully discharge the air in it; then start to heat up: from room temperature to 120°C, the heating rate is 5°C / min, and keep at 120°C for 60 minutes; then from 120°C to 400°C, the heating rate 3°C / min; continue to heat up to 600°C at a rate of 2°C / min, and keep at 600°C for 100 minutes. During the whole reaction process, the absorber was submerged in a low-temperature bath at -5°C, and butanol was used as the absorbent to condense and absorb the reaction product. After the reaction, 40 g of anhydrous calcium chloride was used to remove water from the upgraded bio-oil to obtain the upgraded bio-oil c. The oil parameters and components of the upgraded bio-oil c ...
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