KR100704129B1 - Additive for Biodiesel and Biofuel - Google Patents

Abstract

The present invention relates to an additive which improves low temperature fluidity of biodiesel or biofuel using the following monomer components, two mixtures and copolymers of formula (1) and formula (2).

Formula (1)

R ₁ is hydrogen or OH or an alkyl group having 20 or less carbon atoms.

R ₂ can be anywhere in the ortho, meta, or para position with hydrogen or OH or an alkyl group with up to 20 carbon atoms

Formula (2)

R ₃ -C = C- (CH ₂ ) n-COOH

R ₃ is an alkyl group having 20 or less carbon atoms substituted with one or more OH groups.

n is a number from 1 to 20.

Biodiesel, low temperature fluidity, cloud point, filter clogging point

Description

Biodiesel and Biofuel Additives {Additive for Biodiesel and Biofuel}

The present invention belongs to a technique for preventing the low-temperature fluidity of biodiesel and biofuel and the deposition of alkali metal in the engine, such as a mixture of fatty acid methyl ester and light oil using vegetable oil. Conventionally, biofuel or biodiesel has been used using vegetable oil as an alternative fuel, but fluidity is low at low temperatures, and in particular, the use is limited in cold weather, so it is difficult to use for vehicles, and should be mixed in low concentrations with diesel at indoors. Due to the addition of alcohols to increase the fluidity, the combustion temperature in the engine is increased, so that nitrogen oxides are generated and the cetane number is lowered. In PCT / EP 98/07410, methacrylate derivatives and copolymers are used as low-temperature fluid additives. European Patent No. 6913555 describes copolymers of alkoxylated alcohols and methacrylic acid esters having ethylene oxide or propylene oxide units. Attempt to improve low temperature fluidity. However, these patents show a limitation in showing excellent low-temperature flow performance for biodiesel and biofuel, especially for soybean oil biodiesel.

In the present invention, by removing the disadvantages shown in the prior art, can be used as a vehicle fuel in the cold winter season, washing the alkali metal deposited in the engine and discharged to the outside of the engine to create an environment so that complete oxidation occurs in the engine. To provide biodiesel and biofuel additives.

The additive used in the present invention comprises the following monomer component, compound (A) of formula (1) and compound (B) of (2), (A) 0 to 99.9 wt% of compound (A), and 0 to 99.9 of (B) compound. % Is mixed and used so that the sum total of (A) compound and (B) compound may be 100 weight%, or it may be used by copolymerizing. The total biodiesel or biofuel is characterized by using a mixture or copolymer of (A) and (B) in an amount of 0.005 to 5% by weight.

Formula (1)

R ₁ is hydrogen or OH or an alkyl group having 20 or less carbon atoms.

R ₂ can be anywhere in the ortho, meta, or para position with hydrogen or OH or an alkyl group with up to 20 carbon atoms

Formula (2)

R ₃ -C = C- (CH ₂ ) n-COOH

R ₃ is an alkyl group having 20 or less carbon atoms substituted with one or more OH groups.

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n is a number from 1 to 20.

The present invention is explained in more detail by the following examples, which are not intended to limit the present invention. In addition, it is used in soybean oil biodiesel or rapeseed oil biodiesel to promote low temperature fluidity. In Examples 1 to 2, 20 wt% of soybean oil biodiesel was mixed with 80 wt% of winter diesel fuel, and added to BD20 used to measure the pour point, filter plugging point, cloud point according to the type of additive used, and the pour point was KS M2039. -2001, filter clogging point was measured by KS M2411-2001, cloud point was measured by KS M 2016-1-2000 method. Comparative Example 1 shows only the winter diesel, Comparative Example 2 shows the value measured for the biodiesel (BD20).

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Table 1 shows the pour point, filter clogging point, cloud point of Example 1 to Example 2 and Comparative Example 1 and Comparative Example 2.

Example 1

(A) a substance R ₁ is an ethyl group, R ₂ is R ₃ is C ₈ H ₁₈ O, n is 7 as (B) the compound of the material 1g of the formula (2) OH in para position by a compound of the formula (I) 1 g was copolymerized and 20% soybean oil biodiesel was added to 5 kg of BD20 mixed with light oil.

Example 2

As compound (A) of formula (1), ₁ g of R ₁ is hydrogen and R ₂ is OH, and as compound (B) of formula (2), R ₃ copolymerizes C ₅ H ₈ O, and 1 g of n 5 Soybean oil biodiesel 20% was added to 5 kg of BD20 mixed with light oil.

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Comparative Example 1)

Only pure winter diesel was used.

Comparative Example 2)

BD20 was used in which 80% by weight of diesel diesel in winter and 20% by weight of soybean oil biodiesel were mixed.

Table 1. Pour point, filter clogging point, cloud point data

As described in detail above, the biodiesel or the biofuel is obtained by partial graft or full graft copolymerization of the compound of formula (1) as monomer and the compound of formula (2) as monomer. When added to, the filter plugging point is lowered and the pour point is lowered, so that it can be used outdoors even in cold weather in winter. It is also used for soybean dewy biodiesel or rapeseed oil biodiesel to improve low temperature fluidity.

Claims (4)

The additives used in the present invention are biodiesel and biofuel additives, characterized in that the following monomer components, a compound of formula (1) and a compound of formula (2), are mixed and used. Formula (1)

R ₁ is hydrogen or OH or an alkyl group having 20 or less carbon atoms. R ₂ is hydrogen or an alkyl group of up to 20 carbon atoms, possible in ortho, meta and para positions Formula (2) R ₃ -C = C- (CH ₂ ) n-COOH R ₃ is an alkyl group having 20 or less carbon atoms substituted with one or more OH groups. n is a number from 1 to 20 The compound (A) of the formula (1) 0 to 99.9% by weight, and the compound (B) of the formula (2) 0 to 99.9% by mixing a total of (A) compound and (B) compound 100 weight Biodiesel and biofuel additives, characterized in that the mixture is used or copolymerized to be% The biodiesel and biofuel additive according to claim 1, wherein a mixture or copolymer of (A) and (B) compounds is used in an amount of 0.005 to 5% by weight based on the total biodiesel or biofuel. delete