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Boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oil as well as preparation method and application of boron-containing polymer pour point depressant

A petrochemical diesel and biodiesel technology, applied in biofuels, petroleum industry, fuel additives, etc., can solve the problems affecting the storage, transportation and use of oil products in cold regions, the loss of low-temperature fluidity of biodiesel, and the clogging of fuel pipelines or filters To achieve the effect of enhancing pour point depressing effect, improving low temperature flow performance and improving cloud point

Pending Publication Date: 2022-07-12
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, compared with petrochemical diesel, biodiesel shows poorer low-temperature fluidity. At low temperatures, biodiesel gradually precipitates wax crystals and cross-links with each other to form a three-dimensional network structure, which wraps the remaining liquid, making biodiesel lose its low temperature. Fluidity, leading to clogging of fuel pipes or filters in the diesel fuel system, seriously affecting the storage, transportation and use of oil products in cold regions

Method used

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  • Boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oil as well as preparation method and application of boron-containing polymer pour point depressant
  • Boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oil as well as preparation method and application of boron-containing polymer pour point depressant
  • Boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oil as well as preparation method and application of boron-containing polymer pour point depressant

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preparation example Construction

[0035] In order to achieve the above purpose, the present invention provides a boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oil and its preparation method and application, comprising the following steps:

[0036] Step 1: Synthesis of tetradecyl methacrylate: mix tetradecanol and methacrylic acid in proportion, add solvent, catalyst and polymerization inhibitor, heat and react, the product is washed with alkali, washed with water, rotary evaporated and dried in vacuum to obtain methyl methacrylate. The ratio of tetradecyl acrylate; tetradecanol to methacrylic acid is (1.1-1.3):1, most preferably 1.2:1. The solvent is toluene, and its amount is 20-40ml, most preferably 30ml. The polymerization inhibitor is hydroquinone, and its dosage is 0.50-0.70% of the total mass of methacrylic acid and tetradecanol, most preferably 0.6%. The catalyst is p-toluenesulfonic acid, and the amount thereof is 1.1-1.3% of the total mass of methacrylic ac...

Embodiment 1

[0048] A pour point depressant that can reduce the cloud point, cold filter point and condensation point of soybean oil biodiesel-petrochemical diesel blended oil, is a polymerization product of tetradecyl methacrylate and pinacol allyl borate. material, its preparation method is:

[0049] The three-necked flask was equipped with a constant pressure separatory funnel, a reflux condenser, and a nitrogen introduction tube, placed in a constant temperature magnetic stirrer, and 4.237g (0.015mol) of tetradecyl methacrylate, 0.840g (0.005mol) of allyl were added in turn base boric acid pinacol ester and 20 ml of toluene solvent, the three-necked flask was evacuated for 3 min, passed nitrogen for 3 min, and the vacuum and nitrogen were repeated three times each to completely remove the air in the reaction flask. When the temperature reached 120°C, 10 mL of a toluene solution dissolved in 0.051 g of benzoyl peroxide was slowly added dropwise (dropping was completed in 30-45 minutes),...

Embodiment 2

[0052] A pour point depressant that can reduce the cloud point, cold filter point and condensation point of soybean oil biodiesel-petrochemical diesel blended oil, is a polymerization product of tetradecyl methacrylate and pinacol allyl borate. material, its preparation method is:

[0053] The three-necked flask was equipped with a constant-pressure separatory funnel, a reflux condenser, and a nitrogen inlet tube, placed in a constant-temperature magnetic stirrer, and 4.237g (0.015mol) of tetradecyl methacrylate, 0.420g (0.0025mol) of alkene were sequentially added. Propylboronic acid pinacol ester and 20 ml of toluene solvent, the three-necked flask was evacuated for 3 min, passed nitrogen for 3 min, and the vacuum and nitrogen were repeated three times each to completely remove the air in the reaction flask. When the temperature reached 120°C, 10 mL of a toluene solution dissolved in 0.047g of benzoyl peroxide was slowly added dropwise (dropping was completed in 30-45 minute...

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Abstract

The invention relates to a boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oil and a preparation method and application of the boron-containing polymer pour point depressant. The preparation method comprises the following steps: step 1, mixing tetradecyl alcohol and methacrylic acid in proportion to obtain tetradecyl methacrylate; 2, tetradecyl methacrylate and allyl boronic acid pinacol ester are mixed, and finally a tetradecyl methacrylate-allyl boronic acid pinacol ester binary polymer is obtained; and step 3, adding the prepared pour point depressant into soybean oil biodiesel-petrochemical diesel blended oil, and testing the low-temperature flowing property of the soybean oil biodiesel-petrochemical diesel blended oil. The blended oil pour point depressant used in the invention can be well dissolved in an oil product, and the polarity provided by the boron element enhances the interaction between the pour point depressant and wax crystals, thereby enhancing the low-temperature fluidity of the blended oil, and improving the defect that biodiesel-petrochemical diesel cannot be widely applied due to poor low-temperature fluidity.

Description

technical field [0001] The invention relates to the field of blended oil pour point depressants, in particular to a boron-containing polymer pour point depressant for biodiesel-petrochemical diesel blended oils, and a preparation method and application thereof. Background technique [0002] In order to alleviate the problems of global energy shortage and environmental degradation, renewable and sustainable energy has attracted widespread attention. Biodiesel is one of the renewable energy sources and is a mixture of fatty acid methyl esters (FAME) produced from vegetable oils, animal fats and waste cooking oils. Biodiesel has the advantages of being renewable, high cetane number, good lubricity, high flash point, non-toxic, biodegradable, etc. It is an ideal fuel to replace petrochemical diesel. Biodiesel can be blended with petrochemical diesel in any proportion or completely replace petrochemical diesel. CO, SO 2 , Emissions of aromatic hydrocarbons decreased with incre...

Claims

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Application Information

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IPC IPC(8): C10L1/30C10L10/14
CPCC10L1/303C10L10/14Y02E50/10
Inventor 韩生孙彬杨洋卢义麟任飞鹤薛原蔺华林
Owner SHANGHAI INST OF TECH
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