Binary polymer biodiesel pour point depressant as well as preparation method and application thereof

A biodiesel and polymer technology, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve problems such as poor fluidity at low temperature, and achieve the effect of small molecular weight of the copolymer, strong compounding of the system, and low price of the monomer

Pending Publication Date: 2021-06-04
SHANGHAI INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a binary polymer biodiesel pour point depressant and its preparation method and application, which are used to solve the problem of poor low temperature fluidity of existing biodiesel

Method used

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  • Binary polymer biodiesel pour point depressant as well as preparation method and application thereof
  • Binary polymer biodiesel pour point depressant as well as preparation method and application thereof
  • Binary polymer biodiesel pour point depressant as well as preparation method and application thereof

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preparation example Construction

[0028] A kind of binary polymer biodiesel pour point depressant, its preparation method comprises the following steps:

[0029] 1) Add methacrylic acid and higher alcohol to toluene at a molar ratio (0.8-1.2): 1 to prepare a mixed solution of methacrylic acid, heat to 50-70°C and mix evenly, then add the catalyst p-toluenesulfonic acid and Heating to 110-120°C and reacting at a constant temperature for 5-6 hours to obtain higher carbon ester of methacrylate; wherein, the higher alcohol includes at least one of myristyl alcohol, cetyl alcohol or stearyl alcohol, and the amount of catalyst added is 0.6-1.0% of the total mass of methacrylic acid and higher alcohols,

[0030] 2) Add high carbon methacrylate and cyclohexyl methacrylate to toluene at a molar ratio (4-7): 1, then heat up to 60°C, and fully stir to dissolve all reactants, while nitrogen Pumping 3 times to remove the air in the reaction system to obtain a reaction system solution;

[0031] 3) Heat the reaction system...

Embodiment 1

[0035] A kind of myristyl methacrylate-cyclohexyl methacrylate binary polymer, its preparation method comprises the following steps:

[0036] 1) Add 10.33g (0.12mol) of methacrylic acid, 21.44g (0.1mol) of tetradecyl alcohol, and 0.192g of terephthalic acid to a three-necked flask equipped with a condenser, a water separator, a thermometer, and a magnetic stirring device. Phenol and 50mL toluene, then heated up to 60°C and stirred thoroughly to completely dissolve myristyl alcohol in toluene to obtain a mixed raw material solution;

[0037] 2) quickly add 0.254g catalyst p-toluenesulfonic acid, and heat reaction at 120 DEG C for 5h, when it is observed that the amount of water in the water separator is equivalent to the theoretical value, the reaction is terminated to obtain a light yellow transparent liquid reaction product solution;

[0038] 3) After the reaction product solution is cooled to room temperature, pour it into a separatory funnel, wash it with 5% NaOH solution f...

Embodiment 2

[0046] A cetyl methacrylate-cyclohexyl methacrylate binary polymer, in its preparation method:

[0047] In step 1), adopt 24.24g cetyl alcohol to replace 21.44g tetradecyl alcohol;

[0048] In step 2), the add-on of catalyst p-toluenesulfonic acid is 0.277g;

[0049] In step 4), 15.53 g (0.05 mol) of hexadecyl methacrylate was used to replace 14.12 g (0.05 mol) of tetradecyl methacrylate;

[0050] Step 5) in, the add-on of benzoyl peroxide is 0.172g.

[0051]All the other are with embodiment 1.

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Abstract

The invention relates to a binary polymer biodiesel pour point depressant and a preparation method and application thereof.The preparation method comprises the steps that firstly, a mixed solution of methacrylic acid and higher alcohol is prepared, heated to 50-70 DEG C and evenly mixed, then a catalyst is added, heated to 110-120 DEG C and subjected to a constant-temperature reaction for 5-6 h, and a methacrylic acid high-carbon ester is obtained; and the methacrylic acid high-carbon ester and a methacrylic acid cyclic ester are prepared into a mixed solution, and polymerization reaction is carried out under the action of an initiator to obtain the binary polymer biodiesel pour point depressant. Compared with the prior art, the preparation method has the advantages that the preparation process is simple, the operation is convenient, the pour point depressing effect is effectively improved by introducing cyclohexyl methacrylate as a pour point depressant modification functional component, and the condensation point and the cold filter plugging point of the biodiesel are respectively reduced by 2-8 DEG C and 1-8 DEG C, so that the applicable temperature range of the biodiesel is expanded.

Description

technical field [0001] The invention belongs to the technical field of biodiesel pour point depressant, and relates to a binary polymer biodiesel pour point depressant and a preparation method and application thereof. Background technique [0002] With the rapid development of my country's economy, the burning of fossil fuels has seriously affected the environment and people's daily life. Limited fossil energy and increasingly serious environmental problems make people urgently need a renewable green energy. Biodiesel is currently the most concerned liquid biofuel. It has fuel characteristics similar to petrochemical diesel, and has the advantages of low emission, biodegradable, non-toxic, and strong lubricity, so it can be a good substitute for petrochemical diesel fuel. . However, in cold regions and climates, biodiesel is extremely easy to solidify, which greatly limits the transportation of diesel pipelines and the normal use of diesel engines. [0003] Biodiesel pour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C10L1/196C10L10/14
CPCC08F220/1818C10L1/1963C10L10/14
Inventor 薛原袁铭霞李欣朱贤陈哲严春阳孔玥李梦琰蔺华林韩生
Owner SHANGHAI INST OF TECH
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