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A kind of technology for preparing epoxy fatty acid isooctyl ester based on biodiesel

An epoxy fatty acid, biodiesel technology, applied in sustainable manufacturing/processing, chemical industry, organic chemistry, etc., can solve problems such as unreported treatment methods, large equipment investment, and many process steps, and achieve easy recycling and reuse. , the effect of reducing production energy consumption, process efficiency and environmental protection

Active Publication Date: 2020-06-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods all realize the treatment of epoxy wastewater, but there are many process steps, complicated operation and large investment in equipment
And in the prior art, there is no report about the treatment method of the waste water produced by the specific relevant epoxy fatty acid isooctyl ester

Method used

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  • A kind of technology for preparing epoxy fatty acid isooctyl ester based on biodiesel
  • A kind of technology for preparing epoxy fatty acid isooctyl ester based on biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 Shown, biodiesel and isooctyl alcohol take place transesterification reaction under the condition of solid alkali potassium carbonate as catalyst, reaction condition is: alcohol oil molar ratio is 3:1, and catalyst consumption is 3wt.% of oil weight, and reaction temperature is At 180 ℃, the reaction time is 1 h, and fatty acid isooctyl esters are obtained. Under these conditions, the conversion rate of biodiesel can reach 100%. And the catalyst can be directly reused, and the conversion rate is higher than 99% after repeated use for 5 times.

Embodiment 2

[0022] Fatty acid isooctyl esters have a high boiling point, and high-temperature and high-vacuum rectification is required to purify the product. Such as figure 1 As shown, during the rectification of isooctyl ester, the temperature of the tower bottom is controlled to be 230° C., the temperature of the tower top is 200° C., and the pressure is 200 Pa. The distillation condition of iso-octanol is to control the temperature of the tower bottom at 100°C, the temperature at the top of the tower at 70°C, and the pressure at 1000Pa. Change the operating conditions, as shown in Table 1:

[0023]

[0024] It can be seen that the fatty acid isooctyl ester steamed from the top of the tower is used to recover heat through the steam generator, and the steam pressure (gauge pressure) is 101-202kPa. The heat recovered in this step is used for distillation to remove and recover isooctyl after the transesterification reaction. Heat source of alcohol. The generated steam is heated enou...

Embodiment 3

[0026] Such as figure 1 As shown, fatty acid isooctyl ester, hydrogen peroxide and formic acid undergo epoxidation reaction, reaction conditions: fatty acid isooctyl ester double bond content / hydrogen peroxide / formic acid is 1 / 1.5 / 0.25 (molar ratio), reaction temperature is 65°C, reaction time For 10 hours, after the epoxidation reaction, the reactants were layered. The upper oil phase was crude epoxy fatty acid isooctyl ester, and the lower water phase was the mother liquor containing formic acid wastewater. The thick epoxy fatty acid isooctyl ester was washed to medium through hot water. and then undergo flash evaporation to obtain refined epoxy fatty acid isooctyl ester; after the formic acid-containing wastewater mother liquor, washing wastewater, and flash-evaporated wastewater are combined, hydrogen peroxide in the wastewater system is used for advanced oxidation treatment. The concentration of hydrogen peroxide in the system is about 5% of the wastewater. %, the specifi...

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Abstract

The invention discloses a technology for preparing epoxy fatty acid isooctyl ester based on biodiesel. The technology comprises following steps: the biodiesel is taken as a raw material and subjectedto a transesterification reaction with isooctyl alcohol in the presence of a solid base catalyst, after the reaction, isooctyl alcohol is removed by evaporation, crude isooctyl ester is distilled, anddistilled isooctyl ester is obtained; isooctyl ester, formic acid and hydrogen peroxide are subjected to an epoxidation reaction, layering, washing and flash evaporation are performed after the reaction, and a high-quality epoxy fatty acid isooctyl ester product is obtained. The technology is efficient and environmentally friendly, conversion rate of oil and fat transesterification is high, the solid catalyst can be repeatedly used, heat is recycled, epoxy wastewater treatment is simple, and the technology is suitable for industrial production. High-quality epoxy fatty acid isooctyl ester canbe produced stably and serves as a green bio-based auxiliary to be widely applied to the fields of plastic processing and the like, additional value of the biodiesel can be increased, and rapid development of the biodiesel industry is promoted.

Description

technical field [0001] The invention belongs to the technical field of biodiesel downstream product development, in particular to a process for preparing epoxy fatty acid isooctyl ester based on biodiesel. Background technique [0002] With the vigorous development of the biodiesel industry, the development and synthesis of a series of high value-added chemical products using biodiesel as a platform compound has become a current hot spot. This will not only increase the added value of biodiesel, but also benefit the healthy and sustainable development of the domestic biodiesel industry. Among them, epoxy fatty acid isooctyl ester, as a green and environmentally friendly bio-based additive, has received extensive attention at home and abroad in recent years. It can be used as an environmentally friendly plasticizer, partially or completely replacing phthalate plasticizers (such as DOP, DBP, etc.), and used in the PVC industry; it can also be used as a stabilizer, admixture a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D303/42C07D301/12
CPCC07D301/12C07D303/42Y02P20/50
Inventor 聂勇郑挺吴振宇吴利航解庆龙卢美贞梁晓江夏凡计建炳
Owner ZHEJIANG UNIV OF TECH
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