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High-cleanness composite biodiesel and preparation method thereof

A biodiesel, clean technology, applied in the fields of biofuel, petroleum industry, high-efficiency propulsion technology, etc., can solve the problems of poor low-temperature fluidity of biodiesel, and achieve the effects of improved low-temperature fluidity, efficient and simple preparation process, and favorable promotion.

Inactive Publication Date: 2020-06-26
宜宾中通环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soybean oil and methanol undergo transesterification under alkali-catalyzed conditions to generate biodiesel, but biodiesel has problems such as poor low-temperature fluidity. Agents and surfactants, can effectively improve the low temperature flow properties of compound biodiesel products

Method used

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  • High-cleanness composite biodiesel and preparation method thereof
  • High-cleanness composite biodiesel and preparation method thereof
  • High-cleanness composite biodiesel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step S1: Add 100 parts by weight of thioglycolic acid and 0.4 parts by weight of p-toluenesulfonic acid to the reaction vessel, and add THF to the reaction vessel at a ratio of 10 mL of tetrahydrofuran per gram of thioglycolic acid, and continuously feed nitrogen into the solution. The amount of adding 3mL tetrahydrofuran to 1 gram of pentaerythritol was uniformly miscible with 37 parts by weight of pentaerythritol and THF. Under the condition of the reaction temperature of 100°C, the THF solution of pentaerythritol was slowly added dropwise to the reaction vessel and stirred evenly. After 6 hours, the reaction was stopped and cooled. , Precipitate after rotary evaporation and concentration, filter and further wash and dry to obtain product A pentaerythritol mercaptoacetate;

[0030] Step S2: Add 100 parts by weight of maleic anhydride to the reaction container, and add 10 mL of toluene per gram of maleic anhydride. For liquid B, 143 parts by weight of styrene, 43 parts...

Embodiment 2

[0035] Step S1: Add 100 parts by weight of thioglycolic acid and 0.5 parts by weight of p-toluenesulfonic acid to the reaction vessel, and add THF to the reaction vessel at a ratio of 11 mL of tetrahydrofuran per gram of thioglycolic acid, and continuously feed nitrogen into the solution. The dosage of adding 4mL tetrahydrofuran to 1 gram of pentaerythritol was uniformly miscible with 38.5 parts by weight of pentaerythritol and THF. Under the condition of reaction temperature of 100°C, the THF solution of pentaerythritol was slowly added dropwise to the reaction vessel and stirred evenly. After 7 hours, the reaction was stopped and cooled. , Precipitate after rotary evaporation and concentration, filter and further wash and dry to obtain product A pentaerythritol mercaptoacetate;

[0036] Step S2: Add 100 parts by weight of maleic anhydride to the reaction container, and add 11 mL of toluene per gram of maleic anhydride. For liquid B, 146.5 parts by weight of styrene, 44.5 par...

Embodiment 3

[0042] Step S1: Add 100 parts by weight of thioglycolic acid and 0.6 parts by weight of p-toluenesulfonic acid to the reaction vessel, and add THF to the reaction vessel at a ratio of 12 mL of tetrahydrofuran per gram of thioglycolic acid, and continuously feed nitrogen into the solution. 40 parts by weight of pentaerythritol and THF are homogeneously miscible. Under the condition of reaction temperature of 100°C, slowly drop the THF solution of pentaerythritol into the reaction vessel and stir evenly. After 8 hours, stop the reaction and cool , Precipitate after rotary evaporation and concentration, filter and further wash and dry to obtain product A pentaerythritol mercaptoacetate;

[0043] Step S2: Add 100 parts by weight of maleic anhydride to the reaction container, and add 12 mL of toluene per gram of maleic anhydride. For liquid B, 150 parts by weight of styrene, 46 parts by weight of dibenzoyl peroxide, and 3 parts by weight of product A are dissolved in toluene. The a...

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Abstract

The invention discloses high-cleanness composite biodiesel and a preparation method thereof. The high-cleanness composite biodiesel comprises a completely esterified four-arm star-shaped SMA copolymer, an esterified modified four-arm star-shaped SMA copolymer, aviation kerosene and biodiesel. Carrying out transesterification reaction on the soybean oil and methanol under an alkali catalysis condition to generate biodiesel; according to the present invention, the compounded low temperature flow improver and the surfactant are added to the biodiesel synthesized from soybean oil and methanol, such that the low temperature flow property of the composite biodiesel product can be effectively improved. The completely esterified four-arm star-shaped SMA copolymer is used as a low-temperature flowimprover; the esterification modified four-arm star-shaped SMA copolymer is used as a surfactant; by compounding the two components, the cold filter plugging point and the condensation point of the composite biodiesel can be reduced, the low-temperature flowing property of the composite biodiesel can be remarkably improved, and the composite biodiesel has efficient and stable dispersing capacity and good oil solubility and can be mutually dissolved with petrochemical diesel in any proportion.

Description

technical field [0001] The invention relates to the fuel field, in particular to a high-clean composite biodiesel and a preparation method thereof. Background technique [0002] In a broad sense, biodiesel includes all alternative fuels produced from biomass. In a narrow sense, biodiesel is also called fuel methyl ester, biomethyl ester or esterified oil, that is, a mixture of fatty methyl esters, which is mainly produced by using unsaturated fatty acids Obtained by transesterification with low-carbon alcohols, fatty acids in biodiesel molecules are generally composed of 14-18 carbon atoms, which is similar to the hydrocarbon structure composed of about 15 carbon atoms in diesel oil. The source of raw materials is wide, and various edible Oil and catering waste oil, animal fat left over from slaughtering, and even some oilseeds and tree species are rich in fatty acid glycerides, which are suitable as sources of biodiesel. Vegetable oil accounts for 70% of the total amount o...

Claims

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Application Information

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IPC IPC(8): C10L1/24C10L1/02C10L10/14C11C3/04
CPCC10L1/026C10L1/2481C10L10/14C11C3/04Y02E50/10Y02T50/678
Inventor 王德彬
Owner 宜宾中通环保科技有限公司
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