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Binary benzene ring-containing polymer biodiesel pour point depressant as well as preparation and application thereof

A biodiesel and polymer technology, used in the petroleum industry, liquid carbonaceous fuels, fuels, etc., can solve the problems of reducing the cold filter point of biodiesel, improve the low temperature flow performance, reduce the freezing point and cold filter point, and improve the The effect of solubility

Active Publication Date: 2022-02-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the pour point depressants currently on the market can improve the low temperature flow properties of biodiesel to a certain extent, they need to be further improved in reducing the cold filter point of biodiesel.

Method used

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  • Binary benzene ring-containing polymer biodiesel pour point depressant as well as preparation and application thereof
  • Binary benzene ring-containing polymer biodiesel pour point depressant as well as preparation and application thereof
  • Binary benzene ring-containing polymer biodiesel pour point depressant as well as preparation and application thereof

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preparation example Construction

[0023] A preparation method of a binary benzene ring-containing polymer biodiesel pour point depressant, comprising:

[0024]

[0025] S1: Mix methacrylic acid, higher alcohol, and hydroquinone in the solvent toluene at a molar ratio of 1.2:1:(0.017-0.025), then add the catalyst p-toluenesulfonic acid to carry out esterification reaction at 110-120°C 5-6h, obtain higher carbon methacrylate;

[0026] Wherein, the higher alcohol is one or more of dodecyl alcohol, myristyl alcohol or cetyl alcohol; the amount of p-toluenesulfonic acid is 1.2% of the total mass of methacrylic acid and higher alcohol;

[0027] S2: Mix high-carbon methacrylate and p-acetoxystyrene in a molar ratio (8-10): 1 in solvent toluene, and add initiator benzoyl peroxide to carry out polymerization reaction at 90-110°C 7-8h, after separation and purification, a binary benzene ring-containing polymer biodiesel pour point depressant is obtained;

[0028] Among them, high-carbon methacrylate includes one or...

Embodiment 1

[0032] A kind of binary benzene ring-containing polymer biodiesel pour point depressant, its preparation method comprises:

[0033] S1: Add 10.33g (0.12mol) of methacrylic acid, 21.44g (0.1mol) of tetradecyl alcohol, 0.192g (0.0017mol) of Hydroquinone, 50mL toluene, and heated up to 60°C to completely dissolve myristyl alcohol in toluene, then quickly add 0.381g of catalyst p-toluenesulfonic acid into the three-necked flask, heat up to 120°C for about 5 hours, When it is observed that there is water in the water separator and the system is in a light yellow transparent liquid state, the reaction is terminated;

[0034] After the reaction is finished, cool to room temperature, pour into a separatory funnel, wash 3 times with 5wt% NaOH solution to weak alkalinity, then wash 3 times with distilled water to neutrality, leave to separate layers to remove the bottom liquid, and remove the upper layer substance Pour into a round-bottomed flask, carry out rotary evaporation at 50°C, ...

Embodiment 2

[0039] A kind of binary benzene ring-containing polymer biodiesel pour point depressant, its preparation method is compared with embodiment 1, and difference is:

[0040] 1) In step S1, the added 21.44g (0.1mol) of tetradecyl alcohol, 0.192g (0.0017mol) of hydroquinone, and 0.254g of catalyst p-toluenesulfonic acid were replaced by 24.24g (0.1mol) of cetyl alcohol, 0.207g (0.0019mol) hydroquinone, 0.415g catalyst p-toluenesulfonic acid;

[0041] 2) In step S2, the added 25.42g (0.09mol) of tetradecyl methacrylate and 0.27g of benzoyl peroxide were replaced by 18.64g (0.06mol) of hexadecyl methacrylate and 0.203g of benzoyl peroxide .

[0042] All the other are with embodiment 1.

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Abstract

The invention relates to a binary benzene ring-containing polymer biodiesel pour point depressant and preparation and application thereof, and the preparation method comprises the following steps: mixing methacrylic acid high-carbon ester and p-acetoxystyrene in an organic solvent, adding an initiator for polymerization reaction, and separating and purifying to obtain the binary benzene ring-containing polymer biodiesel pour point depressant. Compared with the prior art, the binary polymer biodiesel pour point depressant disclosed by the invention has the advantages of simple preparation process, convenience in operation and the like, and shows good solubility in biodiesel, and alkyl long chains in methacrylic acid high-carbon ester can generate eutectic action, so that the low-temperature flowing property of the biodiesel is effectively improved; meanwhile, corresponding polar groups are provided for acetoxystyrene, so that the contact degree of the pour point depressant and wax crystals is enhanced, the pour point depressant can be better adsorbed on the surfaces of the wax crystals, the wax crystals are uniformly distributed, and the condensation point and the cold filter plugging point of biodiesel are reduced.

Description

technical field [0001] The invention belongs to the technical field of biodiesel pour point depressant, and relates to a binary benzene ring-containing polymer biodiesel pour point depressant and its preparation and application. Background technique [0002] The large-scale exploitation and use of fossil fuels such as diesel has made the problems of energy shortage and environmental pollution increasingly severe, which has attracted widespread attention from all over the world. The development of clean and renewable green energy has become a global problem that needs to be solved urgently. Biodiesel, as a kind of green and environment-friendly biomass energy, has similar combustion performance to diesel oil, and has the advantages of wide source of raw materials, less environmental hazards, and biodegradability. and" goals are of great significance. However, the poor low temperature fluidity and oxidation stability of biodiesel limit its development. Biodiesel is prone to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F216/16C10L1/196
CPCC08F220/1818C10L1/1963C08F216/165Y02E50/10
Inventor 韩生陈亚莉李欣袁铭霞杨洋孙彬任飞鹤卢义麟赵玉壮薛原
Owner SHANGHAI INST OF TECH
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