JPS5940191B2 - Liquid fuel mixing supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mixing method for adding and mixing one or more liquid substances to a liquid fuel and combusting the mixture.

BACKGROUND ART Conventionally, methods for improving combustion efficiency and the like by mixing liquid additives such as emulsifiers with heavy oil and the like have been widely used. On the other hand, due to energy saving trends in recent years, water and liquid fuels such as gasoline and heavy oil
Alternatively, a useful fuel saving method has been proposed using so-called "water-splitting fuel", which is a mixture of water and a small amount of emulsifier or alcohol, which is then burned to produce a remarkable energy-saving effect.
It has already been published as a new technical concept in a publication (Asahi Shimbun, November 15, 1978) and is well known. However, in order to obtain the effective effects of the above-mentioned "water-mixed fuel", technical conditions are essential, such as making the water particles to be mixed extremely fine, uniformly mixed, and not easily settling and separating. Therefore, for example, the conventional method of simply stirring the liquid tank using a rotary blade does not satisfy the above conditions, and there is a need in the art for a new mixing and feeding method and apparatus for putting the new technical concept into practical use. In view of the above-mentioned circumstances, the present invention was created through long-term practical experiments, and provides a liquid fuel mixing supply device suitable for the above-mentioned "water-mixed fuel".

That is, the present invention uses water, an emulsifier, and a liquid fuel such as heavy oil or kerosene.
Alternatively, when mixing and injecting liquids such as alcohol, the pressure and flow rate are adjusted in accordance with the mixing ratio in each flow path of the liquid, etc., and then the flow paths are combined into a single mixer. The gist of the device is to introduce the mixture, mix it turbulently in the mixer, and then immediately pump and inject it into the burner.

The details will be explained with reference to the drawings showing the embodiments of the present invention. Fig. 1 is a process diagram in which the present invention is implemented in a small-sized heavy oil boiler, in which heavy oil and water are naturally routed through an oil flow path 4 and a water flow path 5 by piping. It is pumped by a head, and each path is equipped with a diaphragm pressure regulator 7 to adjust the pressure according to the mixing ratio (for example, oil: 2.0 to 9/Cd, water: 2.1
~2.3 to 9/Cd), then the flow rate regulator 8 is installed in each flow path to accurately adjust the mixing ratio. That is, with reference to FIG. 3 showing the flow rate regulator 8, a cylinder body 20 is fitted into the hollow part of the casing 21 and is replaceable.The cylinder body 20 has an open end at one end and a small hole 23 for adjusting the flow rate at the bottom of the other end. The small hole 23 is bored to a size that maintains the required flow rate constant depending on the viscosity and pressure of the liquid, and is combined with the casing 21 via the seal ring 22, and is connected by the piping fittings 19 at both ends as shown by the arrow. The liquid is pumped in the direction and the flow rate is adjusted. Thereafter, the flow paths 4 and 5 are connected to a single mixer 9, and the heavy oil and water are mixed in a turbulent state, and the water is evenly mixed with the heavy oil as fine particles, and is immediately sprayed under pressure from the burner 14. Burn. More specifically, in the mixer drawings shown in FIGS. 4 to 7, the mixer is composed of three cylindrical gears that are housed in the hollow part of the case body 24 with a slight clearance, and the gears are meshed with a small gear 28 in the middle. It has a set of two gears 27 of the same size that fit together, and the shaft 29 of the small gear 28 extends from the case body 24 and is connected to the variable speed electric motor to serve as a driving shaft and rotates the set of gears 27 in the direction shown. . On the other hand, a mixing guide 30 is arranged in a replaceable manner in the space between the gears 27, and the guide 30 has a large number of inclined small grooves 31 on its surface, so that the gap with the small gear 28 can be adjusted as desired. In addition, a liquid inlet 25 is provided which communicates with the hollow part in which the gear 27 on the left side of the drawing resides, and connects it with the oil flow path 4 and the water flow path 5, and also communicates with the hollow part in which the other gear 27 resides. A liquid discharge port 26 is provided and connected to the burner 14 . In the mixer described above, when the small gear 28 is driven at high speed at a rotation speed selected according to the amount of mixed liquid, the set of gears 27 are interlocked, and the inflowing liquid flows in the direction of the arrow by acting as a gear pump. The water is pumped at high speed, and the mixture *} (passes through the small groove 31 of the inner tool 30 at high speed and is stirred in turbulent flow, and the water is uniformly mixed into the heavy oil as fine particles and discharged. Therefore, the above-mentioned "
It can burn smoothly while meeting the conditions of ``fuel with water''. In FIG. 1, reference numeral 10 is a normal check valve, reference numeral 11 is a stop valve, and reference numeral 13 is a bypass pipe for circulation when combustion is stopped, etc., and serves to prevent separation of oil and water. Next, FIG. 2 shows a process in which the present invention is applied to a large-scale heavy oil boiler, and is an example of a three-component mixture in which heavy oil is mixed with water and a small amount of emulsifier. It has the same configuration as in FIG. 1 (there are three inlets 25) and has the same function as described above. The results of comparative experiments using the unit according to the present invention under the same conditions using a mixed fuel of heavy oil and water and a fuel containing only heavy oil are as shown in Tables 1 and 2, and the boiler was approximately 10% to 13%. showed remarkable effect of energy saving. On the other hand, microscopic examination of the mixed fuel in the above experiment showed that fine particles of water were evenly mixed into the oil to form an emulsified state, and the separation and sedimentation rate of oil and water was more than 10 times that of conventional blade stirring means. maintain the time of
It has been made clear that it has excellent requirements as a ``water-splitting fuel.'' In addition, the mixing ratio of water in the present invention is approximately 5 to 5.
A range of 30% is appropriate, and it is preferable to specifically select it by considering the purpose of heating the object to be heated by the mixed fuel, the heating conditions, the type of fuel, etc.

Target fuels include a wide range of fuel oil, kerosene, light oil, etc. on the other hand,
Since the present invention mixes only the required amount of fuel, the mixing requires less energy and is more efficient than conventional tank agitation methods, and the device according to the present invention can be produced compactly as a portable unit. It can be standardized, mass-produced, provided at low cost, and used widely as an energy-saving device for boilers.

Further, due to the above-mentioned improvement in miscibility, the amount of emulsifier added to achieve the same effect can be significantly reduced compared to conventional methods. As described above, the present invention effectively mixes water etc. with liquid fuel to promote combustion and improve combustion efficiency in, for example, a boiler, as well as reduce excess air and improve thermal efficiency, contributing to significant fuel savings. It has the effect of reducing energy consumption, and is intended to put into practical use a new technology concept for energy conservation.

[Brief explanation of the drawing]

Figure 1: Process diagram showing one embodiment of the present invention, Figure 2:
Process diagrams showing other embodiments of the present invention, FIG. 3: Front sectional view of a flow rate regulator according to an embodiment of the present invention, FIG. 4: Front view of a mixer according to an embodiment of the present invention, FIG. 5: FIG. AA sectional view of 6th
Figure 7: A front view of the mixing guide of the Figure 4 mixer and its BB sectional view.

Claims (1)

[Claims] 1. In mixing and burning one or more liquid substances with a liquid fuel, a pressure regulator and a flow rate regulator are arranged in series in the respective flow paths of the liquid fuel and the liquid substance, and further the flow rate regulator Subsequently, a single mixer is provided, in which a pair of cylindrical gears that are interlocked at high speed via a cylindrical pinion are tightly fitted and housed in a case body, and there is a space between the pair of cylindrical gears. , a mixing guide having a large number of inclined grooves in the flow direction is attached, and the liquid fuel and the liquid substance are caused to flow at high speed into the gap formed by the small gear and the mixing guide. A liquid fuel mixing and supply device characterized by a structure that creates an emulsion through turbulent stirring.