JPS5867325A - Emulsion formation apparatus - Google Patents

Abstract

PURPOSE:To effectively emulsify a liquid mixture of 2 separative components, by spraying a heavy separative additive liquid in a mist toward the surface of a liquid to be processed which has been fed up to a reference level in a vessel from an ejection nozzle installed at a prescribed distance apart from the reference level. CONSTITUTION:A liquid to be processed, e.g., oil F, is fed from a feed pipe 7 into a premixer 5, and the oil level of the premixer 5 is maintained to a reference liquid level L by actuating a control valve by a level switch 19. On the other hand, an additive liquid, e.g., water W, is sprayed or atomized toward the surface of the oil F from a nozzle 18 installed at a prescribed height (h) apart from the level L with a constant-pressure pump. A mist of the water W sinks by its own weight in a state uniformly dispersed into the oil F, an emulsified liquid mixture M is produced and flows donw through a pipe 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emulsion generating device useful for forcibly mixing a mixture containing two separable components, such as a mixture of fuel oil and water.

In boilers that use fuel oil as a heat source, high-temperature, high-pressure gas is generated by burning the oil in a burner, but a well-known combustion technology is one in which combustion is performed with water added to the oil. So, this method:
The combustibility of the oil component is characterized by near-complete combustion, which has the advantage of providing high combustion efficiency.

However, in the case of this method, it is a prerequisite that the two liquids of soil and mud are mixed on the order of microns.
When the water in the mixed liquid remains free and is mixed unevenly, misfires are likely to occur due to the heat removal effect of the water, resulting in the problem of not being able to obtain stable combustibility. arise.

In view of these characteristics, in the combustion mechanism of conventional tr) boilers, there is a
A homogenizer is used to forcibly mix the water mixed with the oil, and this homogenizer uses a method that uses a surfactant or a method that uses the cavitation effect of ultrasonic vibration. Ta.

However, even with a combustion mechanism equipped with a homogenizer, it is difficult to expect uniform mixing operation throughout, and the reality is that sufficiently stable combustion operation cannot be obtained. be.

Regarding the technical improvement in this point, the inventor of the present application has conducted various research experiments in which the mixing operating force G of the homogenizer is increased depending on the dispersion mode of water in the mixed liquid. Based on this knowledge, we developed a method for effectively mixing and dispersing water (hereinafter referred to as
A comparative experiment was conducted on the specific structure of the sparse emulsion method (referred to as a sparse emulsion means), and it was found that mixing water in the form of mist particles using a liquid surface spray method resulted in an extremely uniform sparse emulsion, which was effective for subsequent mixing operations. It has been found that this has the most favorable effect on

The present invention embodies the results of such research, and the purpose of the present invention is to provide a light working fluid,
A city with separability? Cθ] An emulsion generating device that effectively generates the L fumulon of the soil additive liquid in the mixed liquid with the additive liquid. A device useful as a first-stage sparse emulsion generating device using a combustion method that uses a mixed liquid to generate /i
There it is.

Hereinafter, the present invention will be explained based on the illustrated embodiment G. The production apparatus according to the embodiment shown in FIGS. :1!
An emulsion generating device i'e for mixing water as an additive liquid is shown. .

Between the oil tank 1 as a working liquid supply container and the water tank 2 as a working liquid supply container and the burner 4 of the boiler 3, 5 and a 1-J 7'? wave vomogenizer 6 as a dense emulsion generating device (1). ”:U

(a) Oil supply passage 7 This is piped between the oil tank 1 and the premixer 5, and an electromagnetic on-off control valve 8 is interposed in the middle of the passage 7.

(b) Water supply passage 9 It is piped between the water tank 2 and the premixer 5, and a constant pressure water supply pump 10 is installed in the middle of the passage 9.

(c) Mixed liquid (loose emulsion) passage 11 premixer 5
and the homogenizer 6, and a refueling pump 12 is installed in the middle of the passage 11.

(d) Mixed liquid (dense emulsion) passage 13 is piped between the homogenizer 6 and the burner 4, and several oil pressure gauges 14 are provided in the middle of the passage 13.

(e)! Phase liquid (dense emulsion) return passage 15 above both passages 11. , 13, and a return valve 16 is installed in the middle of the passage 15, and the valve 16 is controlled and driven by the oil pressure d114.
As a result, the fuel oil pressure is kept at a predetermined value.

Here, the details of Primigi 4/5, which is the gist of the present invention, will be explained with reference mainly to FIG.

The main body of the brimming notch 5 is a cylindrical tank 17 forming a surge tank of the oil F supply passage 7, and the mixing '/(t An outlet 1.7a is formed, and an inlet 17b of the oil IJ (oil supply path 7) is opened at the upper part of the tank peripheral wall.

Furthermore, in the center of the tank lid, a mist spray nozzle 18 connected to the lower end of the water W supply passage 1) is installed facing downward, and the height of the reference liquid level of the nozzle 18 is determined by I
The height is adjusted to a predetermined height corresponding to the operating type of J.

Also, at one point around the tank lid, there is a base liquid level l.

It is activated by detecting the level of the liquid level in contrast to G, and is equipped with a bell switch 19, which operates and drives the above-mentioned control valve 8, thereby maintaining the liquid level at the reference level L. It is formed like this.

Note that an air vent 17C is opened at a suitable location on the tank lid (in the illustration, at the mounting portion of the level switch 19).

Next, the operation of the generator of the embodiment configured in this way (
Let me explain in detail.

While the apparatus is in operation, the liquid level of the premixer 5 is always maintained at the reference liquid level L<0> based on the inflow of oil F supplied by the head pressure of the oil tank 1.

At the same time, the nozzle 18 is opened by the constant pressure water supply pump 10.
The supply water W from the water tank 2 is fed under pressure to the nozzle 18.
The water W, which is sprayed at a constant pressure and hits the liquid surface, is dispersed evenly throughout the container and sinks in the container due to its own weight. As a result, a uniform liquid mixture M, which has been made into a sparsely emulsified liquid, is generated and successively flows down from the liquid mixture passage 11.

Next, the mixed liquid (loose emulsion) pressurized at a constant pressure by the pump 12 is forcibly mixed in the process of passing through the homogenizer 6, and the mixed liquid that has effectively formed an emulsion is transferred to the burner 4. The combustion is carried out in a stable manner, resulting in near-complete combustion.

Therefore, extremely stable combustion and heat generation can be obtained even in a burner using low quality oil as fuel.

In addition, in the embodiment (411 configuration) described above, a ?L air capacity type detection unit was used for the level switch 18, but instead of this, the 1.1d side of the nozzle 18 was replaced with a closed chamber with an opening on the bottom. A similar effect may be obtained using other conventional means, such as using a mechanical automatic leveling mechanism formed in the same manner.

As described above, according to the emulsion device according to the present invention, a surge tank is provided in the IIH supply path for the high-quality working fluid, and a heavy liquid having separability is added to the liquid surface in the tank. When the additive liquid is sprayed in a mist-like manner from a spray nozzle placed high above the liquid surface to a specified force base,
As a result, the additive liquid is dispersed in the form of a mist in the air with little resistance, and flows directly from the reference liquid level into the working liquid (
This emulsion settles under its own weight to obtain an extremely uniform emulsion, and can be used, for example, as a pre-emulsion generating device for a combustion device that uses an emulsion of fuel oil and water as fuel to improve the combustion efficiency of the combustion device. There are effects such as being able to do it.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a combustion device using an emulsion generating device showing one embodiment of the present invention, and FIG. 2 is an enlarged view of the premixer of FIG. 1. F... Oil as working fluid, °h - Predetermined height distance, L
... Reference liquid level, M... Mixed liquid, W... Water as additive liquid, 5. Premixer, 17... Tank, 17a...
Discharge port, 18... injection nozzle. Patent applicant Norimitsu Nishimura, agent of Hoei Kogyo Co., Ltd., patent attorney

Claims (2)

[Claims] (1) A tank with a discharge port opened at the bottom, into which working fluid is supplied up to a predetermined reference liquid level, and a space at the top of this tank separated by a predetermined distance from the reference liquid level. 1. An emulsion generating device comprising: a spray nozzle configured to spray an additive liquid having separability from the working liquid and having a large specific gravity in a spray form. (2) The emulsion generating device according to claim 1, wherein fuel oil is used as the working liquid and water is used as the additive liquid.