WO2000029518A1

WO2000029518A1 - Water/oil mixed fuel and process for producing the same

Info

Publication number: WO2000029518A1
Application number: PCT/JP1999/006393
Authority: WO
Inventors: Toshiyasu Satoh
Original assignee: Toshiyasu Satoh
Priority date: 1998-11-17
Filing date: 1999-11-16
Publication date: 2000-05-25
Also published as: AU1181200A; JP2000144158A

Abstract

A water/oil mixed fuel comprising 1 to 30 wt.% liquid fossil fuel, such as heavy oil, and 70 to 99 wt.% water which has been treated with tourmaline and has a pH of 7.5 to 11. The fuel can be produced by mixing water treated with tourmaline so as to have a pH of 7.5 to 11 with a liquid fossil fuel by gradually adding the fuel to the water with agitation. This fuel can be burned by supplying it in an atomized or vaporized state to an oxygen/hydrogen mixed gas which is being burned.

Description

Description Water-oil mixed fuel and its manufacturing method

The present invention relates to a water-oil mixed fuel in which water is mixed with a fossil liquid fuel such as petroleum and other liquid fuel oils, and a method for producing the same. Background art

Fossil liquid fuels such as heavy oil and kerosene are widely used because they are easier to handle than solid fuels such as coal and do not generate ash. Further, to suppress the generation of harmful substances which cause air pollution S 0 _X and N 0 _X like hits the use of these fuels, for the purpose of energy saving due efficient combustion, water was added to the fossil liquid fuel Various so-called emulsion fuels which have been mixed and further emulsified using an emulsifier have been proposed.

However, these emulsion fuels that have been proposed in the past have been emulsified with an emulsifier by adding a small amount of water to a large amount of fuel oil components, and their stability is not always sufficient. There has been a problem that the emulsification is destroyed and the oil and water are separated and cannot be used satisfactorily as emulsion fuel. In addition, these emulsion fuels have a limit to the amount of water to be added for the above reasons. Even if water is added to the maximum, it is limited to about 30 to 40% by weight of the whole fuel. It was impossible to obtain a stable fuel mixture in the emulsion state by adding water. Disclosure of the invention

As a result of intensive studies on the present situation, the present inventor has invented a mixed fuel containing an extremely large amount of water to form a stable emulsion, a method for producing the mixed fuel, and a method for burning this fuel.

That is, the present invention provides a fossil liquid fuel of 1 to 30% by weight, preferably 10 to 30% by weight. It is a water-oil mixed fuel composed of tourmaline-treated water having a pH of 7.5 to 11 and containing 70 to 99% by weight, preferably 70 to 90% by weight of water as an essential component.

Further, the present invention uses tourmaline-treated water having a pH of 7.5 to 11 as water, and agitates the fossil liquid fuel with 2 parts of said water per 1 part by weight of fossil liquid fuel. A method for producing a water-oil mixed fuel, characterized by gradually injecting and mixing at a rate of 3 to 99 parts by weight (coarse mixing) and then vigorously stirring (precise mixing) the mixture under high shearing force. It is.

Furthermore, the present invention provides a method of burning an oxygen-hydrogen mixed gas (brown gas) obtained by electrolyzing water and heating the flame temperature to 240 to 350 ° C. Or a water-oil mixed fuel combustion method in which the vaporized water-oil mixed fuel is supplied and burned. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a diagram showing a process for producing a water-oil mixed fuel of the present invention.

FIG. 2 is a diagram schematically showing a combustion device for burning the mixed fuel of the present invention. Detailed description of the invention

The water used in the mixed fuel of the present invention is obtained by treating ordinary water with tourmaline to make the class of water molecules extremely small, and as a result, water is used as the water. The pH is from 7.5 to 11, preferably from 7.8 to 11, more preferably from 8 to 10. The use of such a special state of water and the mixing with fossil liquid fuel under certain conditions made it possible to obtain a stable fuel mixture containing a large amount of water for the first time. Therefore, the water-oil mixed fuel of the present invention is composed of 1 to 30% by weight of a fossil liquid fuel and 70 to 9.9% by weight of water having a pH of 7.5 to 11 and having a tourmaline treatment of 7.5 to 11; It is a water-oil mixed fuel composed by adding various other components such as an emulsifier and a dispersant as needed. Preferably, the ratio of the fossil liquid fuel in the mixed fuel is 10 to 30% by weight. % Is a water-oil mixed fuel consisting of water and other additional components.

The tourmaline used in the present invention is a Ural land in Brazil and Russia. On the other hand, it is a natural mineral produced in Yunnan Province in China, etc. It is a polar crystalline mineral having a crystal form of hexagonal antireciprocity and having a permanent electrode.

This tourmaline is a polar crystal in which the center of the positive charge and the center of the negative charge in the unit cell of the crystal are greatly displaced, and a positive electrode and a negative electrode are generated at both ends of the crystal, and a permanent electrode is provided. Contacting this tourmaline gemstone with water is not very effective, and it is pulverized to about 0.5 to 2 zm to form a fine powder, which is then mixed with water and brought into contact with the gemstone to obtain the effect of the present invention. Is generated. That is, by treating water with such a fine powder of tourmaline, water clusters can be reduced to about 3 to 1 OA, and the clusters can be stably stored for a long time in a small state. . As a result of such a tourmaline treatment, the pH of ordinary water having a pH of 6.5 to 7.2 is increased to 7.5 to 11, preferably to about 8.0 to 11.0.

Practically, the use of tourmaline in the form of a fine powder mixed with water is extremely difficult to recover from the water and is inconvenient to handle. The present inventors have developed a molded product obtained by sintering fine powder of tolmarin with ceramic. The size and shape may be appropriately selected according to the size of the processing apparatus to be used, but generally, the equivalent diameter is preferably 5 to 30 mm. The shape may be a sphere, a hollow cylinder, or any other shape generally used for packing in a packed tower. In the treatment of water of the present invention, it is preferable to use a mixture of a plurality of substances having different sizes and different shapes.

The tourmaline molded product is filled into a treatment device, and the water to be treated is allowed to flow down from the upper portion so as to make sufficient contact with the tourmaline molded product to perform the tourmaline treatment of the water. The longer the contact time between the water and the packed bed of the tourmaline molded article, the more the water treatment proceeds, and finally the water class is about 3-5 A and the pH is about 7.5-11. In order to obtain water with low pH and high pH in the class, it is necessary to increase the treatment level by sufficiently contacting tourmaline with water through a high packed bed or through a repeated packed bed. Normally, the bed is treated with a water flow rate of 0.5 to 1.0 L per liter.

It is preferable that the tourmaline-treated water used in the mixed fuel of the present invention is adjusted in the degree of water treatment depending on the type of fossil liquid fuel used. That is, in the case of kerosene Is pH 9.0 ± 0.5 for water, pH 9.0 ± 0.5 for heavy oil A, pH 9.5 ± 0.5 for heavy oil B, and heavy oil C Preferably has a pH of 10.0 ± 0.5.

The water used for the raw material is not particularly limited, and tap water, well water, river water, etc. can be used freely. However, it is preferable to remove and purify impurities and impurities by activated carbon filtration or the like before the tourmaline treatment.

As the fossil liquid fuel used in the present invention, any liquid oil generally used for fuel can be used. Specifically, petroleum products such as kerosene, diesel oil, and heavy oil (octuple oil, B heavy oil, and C heavy oil) can be used, but other fuel oils obtained from tar sands can also be used. It is preferable to add a small amount of a surfactant in advance to these fossil liquid fuels as an emulsifier. As the surfactant, an anionic surfactant is preferable, and examples thereof include an alkylbenzene sulfonate and a petroleum sulfonate, but are not limited thereto. In the present invention, a surfactant is not essential, but it is preferable to add it, and the addition amount may be 1 to 5% by weight or less of the fuel oil.

In order to produce the mixed fuel of the present invention, it is important to gradually inject and mix the tourmaline-treated water thus obtained into the fossil liquid fuel while stirring. Even if fossil liquid fuel is injected into tourmaline-treated water by reversing this order, a stable mixed fuel cannot be obtained.

In the production of the mixed fuel of the present invention, first, in the first stage, 2.3 to 99 parts by weight, preferably 2.3 to 9.0 parts by weight of the tourmaline-treated water is added to 1 part by weight of the fossil liquid fuel. It is manufactured by two-stage mixing, in which the mixture is mixed slowly (coarse mixing) and then the mixture is vigorously stirred (precise mixing) in the second stage. Rough mixing may be performed by using a commonly used propeller-type stirrer with gentle stirring at 1,000 to 5,000 revolutions per minute for about 3 to 10 minutes. The second stage of precision mixing is performed by using a stirrer, such as a homomixer type with high shearing force, at a high speed of 10,000 to 30,000 rpm for about 5 to 20 minutes. Perform through a static mixer.

The water-oil mixed fuel containing a large amount of water obtained as described above It becomes a stable mixture that does not separate even after storage for a long period of time.

The water-oil mixed fuel of the present invention is difficult to burn in a normal heavy oil boiler as it is, and an oxygen-hydrogen mixed gas obtained by electrolyzing water as an auxiliary heat source

(Brown gas) to form a reaction field for water splitting by maintaining the temperature of the combustion part in the furnace at a high temperature of 240 to 350 ° C by the high-temperature flame. Combustion is performed by supplying the mixed fuel of the invention. According to the method for burning a mixed fuel of the present invention, together with the fossil liquid fuel component, water is decomposed in this high-temperature reaction field to produce hydrogen and oxygen, and the produced hydrogen is burned as fuel. Once the combustion of the mixed fuel starts, the high temperature is maintained by the heat of combustion, and thereafter, the combustion of the mixed fuel continues continuously and stably. Example

Next, the present invention will be further described based on examples.

Example 1:

A glass column was filled with 2.0 Kg of a molded product obtained by sintering about 1 tourmaline fine powder and ceramic powder, and 2 L of tap water was repeatedly passed through the column six times, and treated with tolmarin-treated water. Prepared. The pH of the water obtained here was 8.5.

On the other hand, 0.1% by weight of a petroleum-based sulfonate having a molecular weight of 400 (trade name: Sulfol 400, manufactured by Matsumura Petroleum Institute) is added to commercially available kerosene for fuel at 35 to 40 ° C. Then, the mixture was sufficiently stirred and dissolved to prepare a fuel oil.

Next, 100 g of this fuel oil was placed in a 3 L stainless steel container equipped with a propeller stirrer, and the above tourmaline-treated water was stirred at 500 rpm at room temperature at a rate of 200 g per minute. A total of 900 g was injected. Next, this mixed solution was transferred to a homomixer-type vessel equipped with a stirrer, and vigorously stirred at 24,000 rpm for 10 minutes. The temperature of the solution increased to 60 to 70 ° C, and a white emulsion was obtained.

This water-oil blended fuel was extremely stable, and no oil separation occurred even 12 months after production. In addition, when this water-oil mixed fuel was collected in a glass beaker and observed, no oil or other separated matter was observed on the glass surface. When this mixed fuel was observed under a microscope at a magnification of 200 to 500, no oil or water droplets were seen. However, water and oil were completely mixed. Comparative Example 1:

A water-oil mixed fuel was prepared in the same manner as in Example 1 except that tap water not subjected to tourmaline treatment was used.

Two hours after the production of this water-oil mixed fuel, an oil separation layer appeared on the surface. In addition, when sampled in a glass beaker, adhesion of oil to the glass surface was observed. When this mixed fuel was observed under a microscope at a magnification of 200 to 500, a large number of oil droplets of 100 to 150 zm were observed. Example 2-1:

(Manufacture of water-oil mixed fuel)

A water-oil mixed fuel was produced by the process shown in FIG.

10 L of commercially available kerosene for fuel is charged into the fuel oil mixing tank 3 from the charging port 13, and a petroleum-based sulfone having a molecular weight of 400 as an emulsifier (trade name: Sulfol 400, manufactured by Matsumura Oil Research Laboratories) ) Was added from the charging port 14 to 0.1% by weight, and was sufficiently stirred and melted with a stirrer 9 at 35 to 40 ° C to prepare a fuel oil. Tank 4 was charged. On the other hand, tap water was passed from the charging port 12 through the activated carbon filtration tank 1 filled with activated carbon 7, and subsequently, the tourmaline molded product 8 similar to that of Example 1 was passed through the tourmaline treatment tank 2 filled with 2 kg. The outlet water was circulated until the pH became 8.5, and tourmaline-treated water having a pH of 8.5 was obtained. This tourmaline-treated water was dropped at a rate of 2.0 L / min into a crude mixing tank 4 equipped with a fuel oil equipped with a stirrer 10 for stirring at 100,000 revolutions per minute, for a total of 90 L. Of tourmaline-treated water was added, and the mixture was further stirred for 10 minutes. This mixture was transferred to the precision mixing layer 5 and vigorously stirred for 20 minutes with a stirrer 11 rotating at 24,000 rpm to produce a water-oil mixed fuel. The obtained water-oil mixed fuel 15 was stored in the fuel storage tank 6. It was stable in milky white emulsion for 6 months and no oil separation was observed. Example 2-2: (Combustion of water-oil mixed fuel)

The water-oil mixed fuel of the present invention obtained as described above was subjected to a combustion test using the combustion apparatus shown in FIG.

The water-oil mixed fuel 15 of the present invention is introduced into the vaporization chamber 21 from the fuel storage tank 6 by the pump 20, where it is ejected from the nozzle 26 and vaporized. The vaporized mixed fuel is heated and supplied to the mixed fuel combustion burner 22 installed in the combustion chamber 24.

On the other hand, the brown gas generated by the brown gas generator 25 and having a mixing ratio of 2 volumes of hydrogen and 1 volume of oxygen obtained by electrolyzing water is mixed with the mixed fuel combustion burner 2 in the combustion chamber 24. It is supplied to a brown gas combustion burner 23 installed toward the combustion section of No. 2. First, the brown gas burning burner 23 was ignited, and brown gas was burned to raise the temperature of the burning portion to about 340 ° C. Next, when the water-oil mixed fuel of the present invention was supplied from the mixed fuel combustion burner 22, the fuel was brought into contact with the combustion flame of the brown gas and ignited to start combustion. When this combustion was further continued, the temperature of the combustion flame became about 350 ° C., and stable and good combustion could be continued. Example 3:

In Example 2, the fuel kerosene was changed to 5 L instead of 10 L, and the final injection amount of tolmarin treatment water was set to 95 L instead of 90 L, except that the conditions were the same as in Example 2. Produced a water-oil mixed fuel. It was stable in milky white emulsion for 6 months without oil separation.

Further, a combustion test was performed in the same manner as in Example 2 using this water-oil mixed fuel. Also in this case, good combustion could be stably continued. Example 4:

In Example 2, the kerosene for fuel was set to 30 L instead of 10 L, and the final injection amount of treated tourmaline water was set to 70 L instead of 90 L. A water-oil mixed fuel was manufactured under the same conditions. It was stable in milky white emulsion for 6 months without oil separation.

Further, a combustion test was performed in the same manner as in Example 2 using this water-oil mixed fuel. Also in this case, stable and good combustion could be continued. Industrial applicability

According to the production method of the present invention, it is possible to produce a water-oil mixed fuel having a very low fuel oil content of 30% by weight or less, and the obtained water-oil mixed fuel can be stored for a long period of time. Is also very stable and does not separate. Further, this mixed fuel can be efficiently and stably burned by the method of the present invention. This blended fuel has extremely low fossil fuel content, such as heavy oil, compared to conventional fuels, and therefore has extremely high energy efficiency. Furthermore, not only SO x and NO x but also CO ₂ emissions are extremely high. It is a low, safe and very environmentally friendly fuel.

Claims

The scope of the claims

1. Water-oil mixed fuel consisting of fossil liquid fuel 1 to 30% by weight and tourmaline treated water with pH 7.5 to 11 70 to 99% by weight.

2. The water-oil mixed fuel according to claim 1, wherein the content of the fossil liquid fuel is 10 to 30% by weight.

3. The water-oil mixed fuel according to claim 1, wherein the pH of the tourmaline-treated water is 8 to 10.

4. Treat the water with tourmaline to adjust the pH to 7.5 to 11, and stir the water into the fossil liquid fuel, and add 2.3 to 99 parts by weight of water to 1 part by weight of the fossil liquid fuel. A method for producing a water-oil mixed fuel, characterized by gradually pouring and mixing, and then strongly stirring the mixture.

5. The water-oil mixed fuel production according to claim 4, wherein the ratio of the fossil liquid fuel to the tourmaline treated water is 2.3 to 9.0 parts by weight per 1 part by weight of the fossil liquid fuel. Method.

6. The method for producing a water-oil mixed fuel according to claim 4 or 5, wherein the water is treated with activated carbon in advance, and then treated with tourmaline.

7. The method of claims 4 to 6, wherein the tourmaline treatment is a method in which the rough tourmaline is crushed into fine powder having an average particle size of 0.5 to 3 m and water is brought into contact with a molded product sintered together with the ceramic component. The method for producing a water-oil mixed fuel according to any one of the preceding claims.

8. Tourmaline treatment is a method of passing water through the packed bed of tourmaline molded products A method for producing a water-oil mixed fuel according to claim 7.

9. The water-oil blended fuel according to claim 1, wherein the oxygen-hydrogen mixed gas obtained by electrolyzing water is burned and its flame temperature is heated to 2400-3500 ° C, and the fuel is atomized or vaporized. A method of burning water-oil mixed fuel by supplying and burning.