JPS58160392A - Emulsified oil - Google Patents

Abstract

PURPOSE:To provide a high-quality W/O emulsion fuel with excellent stability, prepared by dispersing a specified proportion of water droplets of an appropriate particle size in oil homogeneously without the use of emulsifier, etc. CONSTITUTION:Water is sprayed through a nozzle into light oil, heavy oil, etc. The resultant emulsion is led into an ultrasonic chamber and water droplets with a diameter of 2-7mu are dispersed in oil homogeneously in an amount of 2-7% without the use of emulsifier, etc., e.g., by passing the emulsion through a vibratory field of ultrasonic wave, to produce a W/O type emulsion fuel. The emulsion fuel remains stable for a long period without separation. As an alternative method, the emulsion obtained by spraying water into oil through a nozzle may be sprayed through another nozzle into a separate vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water-in-oil type emulsion oil.

It is known that water-in-oil emulsion fuel, which is made by injecting water into petroleum-based fuel oil, is theoretically superior in terms of pollution prevention because it generates fewer carzene emissions and other carriers during combustion. There is.

This is because when a water-in-oil emulsion fuel is put into the combustion chamber from a burner and burned, the water droplets inside the oil droplets boil first due to the difference in boiling points, the oil droplets are crushed and re-fine, and combustion is prevented. This is because combustion is accelerated and complete combustion is achieved.

Therefore, it goes without saying that if such an emulsion fuel can be obtained, its use will promote the cleanliness of the combustion chamber, resulting in incidental effects such as a reduction in the number of times of cleaning and an improvement in thermal conductivity. On the other hand, if it were possible to emulsify low-quality oil and convert high-quality fuel oil to low-quality fuel oil, in addition to the above advantages,
It will be appreciated that the economic advantages would also be enormous.

However, until now, a stable water-in-oil emulsion fuel has not been obtained by using an emulsifier. The use of emulsifiers halve the effects of the previous stage6.
Therefore, it is extremely important to avoid this.

Therefore, the present invention fully obtains all of the above-mentioned theoretical effects, and produces an emulsion fuel without using a pore-forming agent.
It is useful for providing a stable water-in-oil type emulsion. More specifically, it is an object of the present invention to provide a high quality emulsion fuel in which water droplets of an appropriate size are dispersed uniformly and at an appropriate ratio in oil.

It is an emulsion oil that is uniformly dispersed without any drying.

As the oil, either light oil or heavy oil can be used. It goes without saying that it is not possible to add water droplets to light oil, heavy oil, type 1 and type 2 heavy oil without an emulsifier, but in the present invention, it is possible to add water droplets to all types of heavy oil including light oil and below. A stable emulsion oil can be obtained. The reason for this is related to the water addition rate, the diameter of dispersed water droplets, and their uniformity. First, when the water content exceeds 7%, separation from oil tends to occur, but below this, stability improves. The lower the water addition rate, the higher the stability, but if it is less than 2%, there is another reason that the above-mentioned oil droplet crushing effect during combustion is lost, and this is the reason for the limitation. This reason is also related to the upper limit of 7. At 2% or more, the above-mentioned oil droplet crushing effect can be obtained, but when it exceeds 7%, more heat is taken away than necessary due to water droplet boiling. 3- This results in a problem of reduced thermal efficiency.

The smaller the water droplet size, the better the stability. Therefore, the upper limit below which stability can be obtained is 7 microns, and the lower limit of 2 microns is limited because, below this, the oil droplet crushing effect during combustion cannot be sufficiently obtained. I can buy things. Furthermore, it goes without saying that it is important for the stability of the emulsion that the water droplets are uniformly dispersed in the oil.

Therefore, since the emulsion oil of the present invention has the above-mentioned structure, it is very stable without the addition of an emulsifier, etc., and can best realize the oil droplet crushing effect during combustion, and has little heat loss. , all desired target sounds can be achieved.

Next, the method for producing the emulsion oil of the present invention will be explained.

This is, for example, the production of emulsions by injecting water through a nozzle into an oil fluid and then passing the entire emulsion thus produced through an ultrasonic sound field. In this way, a high quality emulsion in which water droplets of an appropriate size are uniformly dispersed in the oil can be easily produced. The injection of water into the oil by means of a nozzle can also be carried out using known devices. For example, an oil fluid may be pressurized into a nozzle chamber, and water may be injected into the oil fluid by an appropriate number of nozzles arranged in the nozzle chamber. What is important here is to set the differential pressure of the nozzle to around 7 palls, and the inventor
I learned this as a result of various experiments. In addition, in this case, the water injected from the nozzle naturally has a 2.
It must be kept within the range of ~7%. At this time, if the oil temperature is kept constant depending on the oil quality, the viscosity is kept constant, and the water addition rate is automatically determined when the nozzle differential pressure is kept constant.

The emulsion thus produced is then introduced into an ultrasound chamber through a pipeline and passed through the ultrasound field. The frequency of the ultrasonic waves and the passage time of the oil in the ultrasonic chamber are determined in consideration of the diameter of the water droplets in the emulsion formed in the previous stage and their distribution state t. As mentioned above, the size of the water droplets in the final emulsion should be between 2 and 7 microns.

In this way, the water-in-oil emulsion fuel of the present invention can be produced. Another possible method is to inject water into the oil in the first stage using a nozzle, as described above, and then inject the entire emulsion into another container using a nozzle in the second stage. Out.

A water-in-oil emulsion with a hydration rate of 5 to 6 to which the present invention is applied for type 3 heavy oil still maintains a stable state even though it has been stored at room temperature and pressure for two years since its production.

The emulsion with a water addition rate of 5.5% to which the present invention has been applied for Type 1 and Type 2 heavy oils has been stored at room temperature and pressure for one year after being produced, and still maintains a completely stable state. .

According to the invention, therefore, the advantages of emulsions mentioned at the beginning can be fully satisfied, and their stability has been increased to an almost perfect level, so that the danger of accidents that might arise due to separation is eliminated; The intended purpose can be fully achieved.

Patent applicant 1) Medium - Correct Agent Patent Attorney 1) Second Department Between Yukio Kobata 7-

Claims (1)

[Claims] An emulsion oil of water and oil, which is obtained by uniformly dispersing all water droplets with a particle size of 2 to 7 microns without adding an emulsifier or the like, with a hydration rate of 2 to 7%.