Biodiesel fuel and preparation method thereof
A bio-based, diesel technology, used in the preparation of organic compounds, biofuels, and carboxylate esters, etc., can solve the problems of unrealizable development routes, poor low-temperature fluidity and oxidation stability, and high raw material costs, and achieve great economic value. and social benefits, reducing pollution and saving mineral resources
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- Publication Date
- 2013-09-25
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention belongs to the field of energy utilization, and in particular relates to a bio-based diesel oil and a preparation method thereof. Background technique
[0002] Biodiesel usually refers to fatty acid methyl esters produced from oil raw materials. The main preparation methods include transesterification, direct mixing, microemulsion, high temperature pyrolysis, etc. The industrial production is mainly based on transesterification, including acid Catalytic, base-catalyzed exchange method. At present, the main direction of technological development is high-efficiency, environmentally friendly catalytic materials such as biological enzymes and solid catalysts, as well as the application of catalyst-free supercritical production processes. In terms of product technology, it tends to have high cetane number and low sulfur content. development of high performance biodiesel.
[0003] However, the net gains in energy and greenhouse gas emissions ...
Examples
Embodiment 1
[0032] 1. Add the prepared saturated sodium chloride solution of sodium hydroxide to the reaction kettle, and then add levulinic acid and furfural with a molar ratio of 1:1 in sequence. Turn on the stirring, raise the temperature to 35°C at 0.5°C / min, and the pressure is 0.2MPa. After 30 minutes of reaction, the yield of 6-furfurylidene levulinic acid is 38%.
[0033] 2. Select the mixed alcohols as methanol, butanol and octanol, and the molar ratio is 4:2:1. Add the mixed alcohol and 6-furfurylidene levulinic acid with a molar ratio of 4:1 into the esterification reaction kettle. The esterification reaction temperature is 240° C., the relative pressure is 2 MPa, and the reaction time is 60 minutes. The conversion rate of 6-furfurylidene levulinic acid is 100%, and the yield of methyl 6-furfurylidene levulinate, butyl 6-furfurylidene levulinate and octyl 6-furfurylidene levulinate in the product The rate is 95%.
[0034] 3. Prepare copper-silver-cerium catalyst by co-precip...
Embodiment 2
[0040] 1. Add the prepared saturated sodium chloride solution of sodium hydroxide to the reaction kettle, and then add levulinic acid and furfural with a molar ratio of 1:2 in sequence. Start the stirring, raise the temperature to 35°C at 0.5°C / min, and the pressure is 0.4MPa. After 30 minutes of reaction, the yield of 6-furfurylidene levulinic acid is 43%.
[0041] 2. Select the mixed alcohols as butanol, pentanol and octanol, and the molar ratio is 4:2:1. Add the mixed alcohol and 6-furfurylidene levulinic acid with a molar ratio of 2:1 into the esterification reaction kettle. The esterification reaction temperature is 240° C., the relative pressure is 2 MPa, and the reaction time is 60 minutes. The conversion rate of 6-furfurylidene levulinic acid is 100%, and the yield of 6-furfurylidene levulinate butyl, 6-furfurylidene levulinate pentyl, 6-furfurylidene octyl levulinate in the product is 100%. The rate is 92%.
Embodiment 3
[0048] 1. Add the prepared saturated sodium chloride solution of sodium hydroxide to the reaction kettle, and then add levulinic acid and furfural with a molar ratio of 1:2 in sequence. Start the stirring, raise the temperature to 40°C at 0.5°C / min, and the pressure is 0.6MPa. After 30 minutes of reaction, the yield of 6-furfurylidene levulinic acid is 45%.
[0049] 2. Select the mixed alcohols as methanol, isobutanol, cyclopropanol, octanol, and the molar ratio is 4:4:1:1. Add the mixed alcohol and 6-furfurylidene levulinic acid with a molar ratio of 8:1 into the esterification reaction kettle. The esterification reaction temperature is 280° C., the relative pressure is 4 MPa, and the reaction time is 40 minutes. The conversion rate of 6-furfurylidene levulinic acid is 100%, and the yield of 6-furfurylidene levulinate butyl, 6-furfurylidene levulinate pentyl, 6-furfurylidene octyl levulinate in the product is 100%. The rate is 93%.