KR100908493B1 - Composition of fuel-additives for waste derived fuel - Google Patents

Abstract

A fuel additive composition for recycled fuel oil is provided to reduce fuel cost efficiently and to increase an input of recycled fuel oil by adding refined oil, waste oil, or waste oil residue in the recycled fuel oil. A fuel additive composition for recycled fuel oil including Paraffin hydrocarbon as a solvent includes 5 ~ 50 parts by weight of ethyleneglycol monoalkylether, 1 ~ 30 parts by weight of C5 ~ C20 alcohol, and ~ 30 parts by weight of C2 ~ C10 ketone based on 100 parts by weight of polyoxyethylene alkyl ether. The polyoxyethylene alkyl ether is polyoxyethylene octyl decyl ether.

Description

Composition of Fuel-additives for Waste Derived Fuel}

The present invention relates to a fuel additive for recycled fuel oil in which polyoxyethylene alkyl ether and ethylene glycol monoalkyl ether are mixed at a predetermined ratio. More particularly, the present invention relates to efficient mixing of water and oil efficiently and emulsifies oil masses to promote combustion. And a fuel additive added to renewable fuel oil to have an effect of reducing air pollutants and preventing sludge generation.

The temperature of the kiln for the manufacture of cement is up to 2000 ℃. At this time, the temperature of the calcined product rises to 1450 ℃, and the waste is completely decomposed and oxidized to change into non-toxic substances. I use it. In particular, waste that is combustible but cannot be recycled as an existing technology is incinerated, but alternative fuel oil that is recycled for use as bituminous coal is used for cement kilns approved for waste treatment facilities due to its flammability. Derived Fuel (WDF).

Typically, WDF is a regenerated emulsion oil prepared by mixing waste oil or waste oil residues with water and other additives (emulsifiers, coagulants). However, when it is used as a fuel, air pollutants, in particular carbon monoxide is emitted a lot of the disadvantage that the amount of the recycled emulsion oil that can be used for a certain time is limited. In addition, there is a problem that the combustion efficiency is lower than the general fuel due to the water contained in the recycled emulsion oil.

Conventional fuel additives for reducing the generation of air pollutants and enhancing the combustion efficiency have been disclosed, but the fuel additives used for such renewable fuel oils have not been found.

Accordingly, the present inventors have studied and tried to reduce carbon monoxide generation and increase combustion efficiency of recycled fuel oil when using recycled fuel oil, and found that a mixture of polyoxyethylene alkyl ether and ethylene glycol monoalkyl ether is effective as a fuel additive of recycled fuel oil. Thus, the present invention has been completed.

The present invention is a fuel additive comprising a paraffinic hydrocarbon as a solvent, characterized in that the fuel additive for renewable fuel oil containing 5 to 50 parts by weight of ethylene glycol monoalkyl ether based on 100 parts by weight of polyoxyethylene alkyl ether. .

In addition, the present invention is a fuel additive comprising a paraffinic hydrocarbon as a solvent, 5 to 50 parts by weight of ethylene glycol monoalkyl ether and 1 to 30 parts by weight of C ₅ ~ C ₂₀ alcohol with respect to 100 parts by weight of polyoxyethylene alkyl ether It is characterized by an included fuel additive for renewable fuel oil.

In addition, the present invention is a fuel additive comprising a paraffinic hydrocarbon as a solvent, 5 to 50 parts by weight of ethylene glycol monoalkyl ether and 1 to 30 parts by weight of C ₂ ~ C ₁₀ ketone with respect to 100 parts by weight of polyoxyethylene alkyl ether It is characterized by an included fuel additive for renewable fuel oil.

Fuel additive according to the present invention is added to refining oil, waste oil or waste fuel waste fuel regeneration fuel to promote combustion and improve calorific value, increase the amount of recycled fuel oil and reduce the fuel input due to the reduction of coal input as the main fuel, cleaning the tank and transfer pipe Benefits such as extended life and reduction of air pollutant gas generation can be obtained.

The present invention is a fuel additive comprising a paraffinic hydrocarbon as a solvent, characterized in that the fuel additive for renewable fuel oil containing 5 to 50 parts by weight of ethylene glycol monoalkyl ether based on 100 parts by weight of polyoxyethylene alkyl ether. .

The regenerated fuel oil is a fuel using waste oil or waste oil residues, and includes a fuel obtained by emulsifying waste oil residues generated after refined waste oil to produce refined oil or recycled oil. At this time, waste oil and waste oil residues of all kinds of combustible oils such as heavy oil, edible oil, light oil, machine oil, lubricating oil, and paraffin oil may be used.

Polyoxyethylene alkyl ethers, which are nonionic surfactants, allow the combustion to occur evenly by slicing the water and oil particles into small pieces and increasing the mixing properties by reducing the surface tension. The polyoxyethylene alkyl ether is preferably polyoxyethylene octyl ether, polyoxyethylene decyl ether or polyoxyethylene octyl decyl ether having a molecular weight in the range of 100 to 600.

Ethylene glycol monoalkyl ether has a function of emulsifying oil residue finely, and has a function of cleaning the inside of the storage tank and the transfer pipe to extend the life of the equipment. The ethylene glycol monoalkyl ether preferably has a C ₁ to C ₅ alkyl group, more preferably ethylene glycol monobutyl ether having a butyl group. The ethylene glycol monoalkyl ether is used 5 to 50 parts by weight based on 100 parts by weight of polyoxyethylene alkyl ether. If it exceeds 50 parts by weight, water and oil are inferior in mixing efficiency and combustion efficiency is reduced. If it is less than 5 parts by weight, there is a problem in dispersing oil residue or sludge.

Alcohol additionally added to the present invention uses 1 to 30 parts by weight based on 100 parts by weight of polyoxyethylene alkyl ether and has an advantage of facilitating initial ignition. The alcohol is C ₅ ~ C ₂₀ , preferably an alcohol in the range of C ₁₀ ~ C ₁₅ .

In addition, the ketone added in addition to the present invention uses 1 to 30 parts by weight based on 100 parts by weight of polyoxyethylene alkyl ether and helps to completely burn the incompletely burned organic material. The ketone is C ₂ ~ C ₁₀ , preferably a ketone in the range of C ₃ ~ C ₇ is used.

Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited thereto.

Example 1

70 wt% of polyoxyethylene octyl decyl ether, 20 wt% of ethylene glycol monobutyl ether, and 10 wt% of heptane were put in a mixing stirrer and stirred to prepare a fuel additive for emulsion oil.

Example 2

75 wt% of polyoxyethylene octyl decyl ether, 15 wt% of ethylene glycol monobutyl ether, 4 wt% of lauryl alcohol, and 6 wt% of heptane were put in a mixing stirrer and stirred to prepare a fuel additive for emulsion oil.

Example 3

78 wt% of polyoxyethylene octyl decyl ether, 18 wt% of ethylene glycol monobutyl ether, 2 wt% of methyl isobutyl ketone, and 2 wt% of heptane were placed in a mixing stirrer and stirred to prepare a fuel additive for emulsion oil. .

Example 4

80% by weight of polyoxyethylene octyl decyl ether, 10% by weight of ethylene glycol monobutyl ether, 4% by weight of lauryl alcohol, 3% by weight of methyl isobutyl ketone, 3% by weight of heptane, put into a mixing stirrer and stirred A fuel additive for emulsion oil was prepared.

Experimental Example 1 Measurement of Carbon Monoxide Generation and Effective Heat

In the 20000 L tank for regenerated fuel oil, the fuel additive of the above example was mixed with the regenerated fuel oil, wherein the mixing ratio of the fuel additive to the regenerated fuel oil was 1 to 500 by weight. The recycled fuel oil is an emulsion (cement kiln) emulsified by adding 80% by weight of waste oil residue and 20% by weight of water after refining the waste oil discharged from the petrochemical industry process, and adding emulsifiers, starchants and oxidation promoters. Clean Korea WDF product used as auxiliary fuel for 288 tons of the regenerated fuel oil mixed with the fuel additive of Example was added to the cement kiln together with 1152 tons of coal, the main raw material, and used for 72 hours to measure carbon monoxide generation and effective calorific value of the regenerated fuel oil.

Fuel additive CO (ppm) Effective heat (kcal / kg) No addition (comparative example) 6.5 2300 Example 1 1.0 3700 Example 2 1.2 3500 Example 3 0.8 3650 Example 4 1.2 3600

Experimental Example  2 : Main fuel Savings rate  Measure

As in Experiment 1, 288 tons of recycled fuel oil was added to maintain a target temperature of 1450 ° C. in the regenerated fuel oil mixed with the fuel additive of Example and coal, which is the main fuel, in a cement kiln for 72 hours of combustion. Coal savings were calculated by measuring the amount of coal to be added together, as shown in Table 2 below.

Fuel additive Coal input (ton) Fuel saving rate (%) No addition (comparative example) 1152 Example 1 1048 9.0 Example 2 1060 8.0 Example 3 1055 8.4 Example 4 1057 8.2

According to the above experiment, when the fuel additive according to the present invention is added to the regenerated fuel oil, the amount of carbon monoxide generated is reduced by 82 to 88%, and the effective heat amount is increased by 1.5 to 1.6 times. In addition, when using the coal as a main fuel, but using the fuel additives added with the fuel additive according to the present invention was confirmed that the fuel saving rate is 8.0 ~ 9.0%.

Claims (5)

A fuel additive comprising a paraffinic hydrocarbon as a solvent, wherein the fuel additive for renewable fuel oil contains 5 to 50 parts by weight of ethylene glycol monoalkyl ether based on 100 parts by weight of polyoxyethylene alkyl ether. According to claim 1, C ₅ ~ C ₂₀ Fuel additive for renewable fuel oil characterized in that it further comprises 1 to 30 parts by weight of alcohol. The fuel additive for regenerated fuel oil according to claim 1 or 2, further comprising 1 to 30 parts by weight of C ₂ to C ₁₀ ketone. The fuel additive of claim 1, wherein the polyoxyethylene alkyl ether is polyoxyethylene octyl decyl ether. The fuel additive for regenerated fuel oil according to claim 1, wherein the ethylene glycol monoalkyl ether is ethylene glycol monobutyl ether.