SU1181696A1 - Method and apparatus for obtaining aqueous emulsions - Google Patents

Abstract

1. A method of producing water-fuel emulsions by dispersing fuel and water, characterized in that, in order to improve the quality of the emulsion by increasing its dispersion, the fuel is preliminarily converted to gaseous and water is heated, while air is dispersed during the dispersion process . S OD 0 CO O)

Description

2. An apparatus for producing water-fuel emulsions containing coaxially mounted nozzle nozzles for supplying fuel and water, a mixing chamber, characterized in that, in order to improve the quality of the emulsion, it is provided with an additional nozzle for supplying air placed outside to coaxially nozzle nozzles, the water supply nozzle is located inside, the ratio of the areas of the outlet openings of the nozzle is 1: (4-5); : (9-10), and the nozzles outlet nozzles are located one from another at a distance x (3.54-4.39) R and U,

r (3.80-3.88) P, where the distance between the outlet openings of the internal nozzle and the nozzle for fuel supply, the distance between the outlet openings of the nozzle for supplying fuel and the external nozzle, the radius of the internal nozzle,

In this case, the length of the mixing chamber is (160-221) R, and the width and height - (75-100) RT.

The invention relates to emulsion fuels used in thermal power plants, railway transport, heating furnaces of various plants, internal combustion engines, etc. The aim of the invention is to improve the quality of the emulsion by increasing its dispersion. The drawing schematically shows a device for producing water-to-fuel emulsions. The device contains coaxially arranged nozzle nozzles 1, 2 and 3 and a mixing chamber 4. The nozzle 1 is located inside, has a diameter of 2 mm and is designed to introduce superheated water. The nozzle 2, with a diameter of 4 mm, is designed to introduce gaseous fuel. The nozzle 3, with a diameter of 6 mm, is placed outside and serves to intake air. At the same time, the ratio of the areas of the outlet openings of the nozzles is 1: (4-5): (9-10), and the outlet openings of the nozzles are located one on another at a distance xL (3.54-4.39) R, and L. ( 3.80-3, 88) R,, where L-, is the distance between the outlets of the inner and middle nozzles} L2 is the radius of the inner nozzle. The length of the mixing chamber is (160-221) R and the width and height. (75-100) R. Example 1. Initial characteristics of the outflowing streams. Overheated water - temperature t 151 С; pressure P 5 atm. Gaseous gasoline - temperature t 197 ° C, pressure, 8 atm. Air is the temperature. Example 2. Overheated water and air with the same parameters as in example 1. Gas gasoline - temperature t 220 ° C, pressure, 3 atm. Example 3. Overheated water temperature t 170 C) pressure P 8 atm. Gaseous gasoline and air are the same as in example 1. Example 4. Overheated water has the parameters, as in example 3, gaseous gasoline and air, as in example 2. The results are summarized in table 1.

1,, 2

36

The device works as follows.

At the confluence of superheated water from the nozzle 1, it is crushed and creates a water fine torch. The outgoing gaseous fuel from the nozzle 2 is condensed on water droplets, and the air flowing out of the nozzle 3 contributes to improved cooling.

Characteristics of the obtained Sizes of nozzles, emulsions, their relative position and chamber dimensions

Dispersion mixing, micron

i 210x90x90

2.8

2.8

 mm

everything else is the same

Table 1

60

2.8

Water in gasoline

jet and introduces additional oxygen to improve emulsion burning characteristics.

Table 2 shows the dependence of the characteristics of the resulting emulsion on the size of the nozzles, their relative position and the dimensions of the mixing chamber with the characteristics of the mixing flows as in the example.

table 2

Note

Water content,%

The emulsion forms over the entire volume of the exhausted flow.

About 75% of the water, which has flowed out from the first nozzle, does not participate in the formation of an emulsion

3.2

 µm 3.1

 mm

3.2

W 210x150x150 all the same

Continued table. 2

gaseous fuel is not involved in the formation of an emulsion

Emulsion is not formed.

About 40% of the outflowing fuel and water do not form an emulsion due to poor cooling conditions.

The resulting emulsion is larger.

Characteristics of the obtained Sizes of nozzles, emulsions, their mutual analysis

position and

Dispersible chamber mixing, micron

21.0x90x90

13W 210 X 60 X 60

all the same

W 150x90x90

3.1 all the same W 300x90x90

everything else is the same

Note

Water content, Z

Formed in the mixing chamber of the zone where there is an emulsion and there is no due to hydrodynamic distortion.

The emulsion will be (more large

In the mixing chamber, zones with and without emulsion are formed due to hydrodynamic distortions.

Claims (2)

1. A method of producing water-fuel emulsions by dispersing fuel and water, characterized in that, in order to improve the quality of the emulsion by increasing its dispersion, the fuel is first transferred to a gaseous state and the water is overheated, while air is supplied during the dispersion process. 2. A device for producing water-fuel emulsions, containing coaxially mounted nozzle nozzles for supplying fuel and water, a mixing chamber, characterized in that, in order to improve the quality of the emulsion, it is equipped with an additional nozzle for supplying air placed externally to the coaxial nozzle nozzles, the nozzle for water supply is placed inside, the ratio of the areas of the nozzle outlet openings is 1: (4-5):: (9-10), and the nozzle outlet openings are located one from another at distances C = (3.54-4.39) R , and C = (3.80-3.88) R, where C is the distance the distance between the outlet openings of the internal nozzle and the nozzle for supplying fuel, 1_ ^ ~ the distance between the outlet openings of the nozzle for supplying fuel and the outer nozzle, R _n is the radius of the inner nozzle, while the length of the mixing chamber is (160-221) R ₁ , and width and height - (75-100).