JPS638483A - Regenerated fuel oil - Google Patents

Abstract

PURPOSE:Regenerated fuel oil, suitable as a heavy oil alternate fuel for boilers, etc., obtained by blending a used vegetable oil with a mineral oil having a specific boiling point in a specific amount. CONSTITUTION:100pts.vol. used vegetable oil of frying oil, salad oil, etc., is blended with 25-35pts.vol. mineral oil (preferably kerosene) having 35-250 deg.C boiling point to give the aimed fuel oil.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to recycled fuel oil, and more specifically, it is a method of mixing used vegetable oil and mineral oil with a boiling point within a certain range in a certain ratio, thereby producing a fuel oil that can be used in boilers, for example. The present invention relates to ++F raw fuel oil that can be used as a fuel oil in place of heavy oil, etc.

(Prior art and its problems) Conventionally, used vegetable oils such as tempura oil and salad oil are traded in as waste oil by collection companies and used after being added to secondary products such as soap. There were many. However, such 1:1 raw use was dyeable only if the profitability costs for both the 1 collection company and the soap 5A manufacturer were commensurate with each other, so for example, the collection company would carry out the collection work if it was not profitable. It's something that didn't exist. Therefore, in facilities such as school lunch centers that dispose of waste oil in large volumes, problems have arisen regarding the disposal of the waste oil in such cases. In other words, when waste oil is dumped into the sea, there are 151 problems, such as causing seawater pollution and contributing to damage to fisheries.Also, after solidifying the waste oil by mixing a coagulant into the waste oil, it is generally If they were to be disposed of in the same manner as other garbage, the economical and labor costs of preparing and mixing coagulants resulted.

Waste oil has a high rate of contamination with water and other impurities, and is not only highly oxidized, but also has a flash point of, for example, tempura oil, which is usually around 250°C. It could not be used as a fuel source for boilers, etc. as a substitute fuel for heavy oil.

In addition, when blending gasoline with this type of waste oil and reusing it as fuel oil, the +lT volume of the generated fuel oil, the dust width value, and its effectiveness as fuel oil. Coordination with the government is particularly problematic. In other words, if raw fuel oil costs more per volume than heavy oil, which is commonly used today as a fuel source for boilers, it will lose its marketability as a fuel oil; If the flash point, etc., which is important in handling fuel oil, remains high, a problem arises in that it loses its effectiveness as a fuel oil.

(Purpose of Hatsura JI) Hatsuha II was completed as a result of various research into reforming this type of used vegetable oil so that it can be used as a fuel oil with a lower I'n value per volume than, for example, heavy oil or kerosene. It is what was done.

Therefore, the first objective of unreleased IJj is to provide endogenous fuel oil that satisfies various properties as a fuel oil in terms of flash point temperature and calorific value, and is also cheaper per volume than heavy oil etc. .

(Departure IJI structure L&) In order to achieve the above goal, the non-departure 11 adopts the following structure.

That is, unreleased II is made by mixing 100 parts by volume of used vegetable oil with 25 to 35 parts by volume of mineral oil having a boiling point of 35 DEG C. to 250 DEG C.

The used vegetable oils listed in l- include, for example, soybean oil, rapeseed oil, olive oil, cottonseed oil, corn oil, castor oil,
There is sesame oil etc. Therefore, for example, soybean oil or rapeseed oil was used as a raw material. Of course, so-called tempura oil, salad oil, etc. are included.

In addition, the mineral oil mentioned in 1- is classified into gasoline with a boiling point of 35°C to 180°C and kerosene with a boiling point of about 170°C to 250°C, but in the present invention, considering the use as fuel oil and profitability, , it is preferable to select the appropriate one from among these. For example, when gasoline is used to reform vegetable oil into fuel oil, it is possible to obtain a better fuel oil than kerosene in terms of flash point and heat generation. However, from an economic point of view, it is better to use kerosene, which has a lower unit price per capacity, and since kerosene has a flash point of about 50°C and has good ignitability, it can be used instead of heavy oil as a fuel source for boilers, for example. It is preferable to use kerosene when using it.

In addition, when mixing 11 parts of used vegetable oil and the above-mentioned mineral oil, the former should be 100 parts by volume and the latter should be 25 to 35 parts by volume, but preferably the latter should be 30 parts by volume. is good.

If the mixing ratio of mineral oil is less than 24 parts, not only will the flash point of the mixed oil be higher, but also the calorific value per unit will be higher than that of the vegetable oil itself (for example, cottonseed oil, approximately 9386 cal/g).
), and it is no longer suitable for use as fuel oil. In addition, when the mixing ratio of mineral oil is 36 parts by volume or more, it is suitable as a fuel oil because the content of mineral oil increases, but on the other hand, the unit price per container of PF raw oil also increases. , it would not be profitable from a profit standpoint.

(Effects of the present invention) The recycled fuel oil of the present invention has a flash point that is higher than the flash point of vegetable oils (for example, 240°C for rapeseed oil and approximately 272°C for cottonseed oil).
°C, about 225 °C for olive oil, r Oil and Fat Chemistry Handbook, 1F
We were able to obtain a value that is much lower than that of the Japanese Oil Chemistry Association (ed.) and slightly higher than the flash point of kerosene (approximately 50°C). In addition, in terms of calorific value, unreleased IJ+ recycled fuel oil is modified to a higher value than vegetable oils (for example, 9386 cal/g for cottonseed oil, 9451 cal/g for olive oil, etc.). It is what was done. Moreover, in this case, the unit price per volume is much cheaper than, for example, heavy oil, so if JJ's recycled fuel oil is used, it can be used as a fuel that can be used as a substitute fuel for heavy oil in boilers, for example. As a result, the cost can be significantly reduced compared to using only heavy oil, which is an excellent effect. Also, in Unreleased II,
Since used vegetable oil can be recycled as a fuel source, it is possible to eliminate environmental pollution and the hassle of preparing a coagulant for disposal as in the past.

(Example) Examples are shown below. In the Examples, part means volume j and 1 part.

Example 1 Add 30 parts of kerosene to 100 parts of used vegetable oil mixed with soybean oil and rapeseed oil and mix in a mixer for 5 to 10 minutes.
The mixture was stirred and mixed at room temperature.

As a result of measuring the various properties of this mixed oil, the following values were obtained.

This mixed oil was used as a fuel source for a boiler, and it was able to obtain heat comparable to conventional boilers that used heavy oil, and its flash point was 50°C, which is the same as the flash point of kerosene as described in -1- Although it was about 12 degrees Celsius higher than the actual temperature, it was easy to catch fire. Also, the unit price for 1 liter of mixed oil is about 20 yen, volume 7.
The Ci value per i1- was also lower than that of heavy oil.

The weight of heavy oil is about 10,000 cal/g.

Example 2 Three parts of a surfactant (trade name, Petroflame S-100) were mixed into the mixed oil obtained in Example 1, and the mixture was stirred for about 5 minutes at room temperature using a mixer.

The resulting mixed oil was used as a fuel source for the boiler.

In this case, the surfactant reduced the viscosity of the mixed oil and improved its fluidity. In addition, this mixed oil reduced S02 and suppressed soot generation. The other properties were the same as those in Example 1 (1), and it was sufficiently capable of being used as a boiler fuel source in place of heavy oil.

Example 3 25 parts of kerosene was added to 100 parts of the vegetable oil of Example 1, and the mixture was stirred and mixed using a mixer at room temperature for 5 to 10 minutes. The flash point and amount of emitted a from this mixed oil were measured using the same method as in Example 1.
cal/g There was.

When this mixed oil was used as a fuel source for a boiler, it took several seconds to ignite, but once it was ignited it burned well. The unit price for 1 liter of this mixed oil was approximately 18 yen.

Example 4 35 parts of kerosene was added to 100 parts of the vegetable oil of Example 1, and the mixture was stirred and mixed in a mixer for 5 to 10 minutes at room temperature. When this mixed oil was supplied to the boiler, ignition was significantly better. Also, as measured in the same method as in Example 1-D:, the flash point of this mixed oil was approximately 59°C, and the exotherm j- was approximately 9900 cal/g.
Met. The r1 value per liter of this mixed oil is
It was about 22 yen.

Claims (1)

[Claims] 100 parts by volume of used vegetable oil has a boiling point of 35°C to 250°C.
A recycled fuel oil characterized in that it is formed by mixing 25 to 35 parts by volume of mineral oil at ℃.