DE8504117U1 - Dosing and atomizing nozzle for solid-liquid mixtures, preferably for coal dust-water or coal dust-oil mixtures, for metering and fine atomization of the mixtures and admixing the mixed air required for the combustion of the mixtures - Google Patents

Description

Re: utility model registration

Dosing and atomizing nozzle for solid-liquid '-'. Eits mixtures preferably for coal dust-water or coal dust-oil -Genri see, for dosing and fine atomization the mixtures and admixture, the mixed air required for the combustion of the mixtures.

The mixture is metered by axially displacing the nozzle needle 1, thereby removing the nozzle needle head 3 is opened and a definable annular passage gap is created, the mixture is under A certain pressure from the mixture space in relation to the total mixture is printed through the passage gap.

After passing the passage gap, the mixture forms a tubular film in the thickness of the inlet gap.

The heated through the nozzle needle end 3, introduced Compressed air, or pressurized gas, emerges from the atomizer sleeve 5a immediately after the formation of the tubular mixture film, causing evaporation of the liquid Portion of the mixture takes place.

The expansion achieved in the vaporized liquid results in a very fine distribution of the carbon content in the expansion zone.

The one introduced through the E-Jector annular gap 11 Combustion air provides that for the primary combustion optimal coal-gas mixture as a result of the ignition is and then set in rotation by the swirl grooves in the nozzle needle tip 6 and in the atomizer tube "15 wi "d.

The rotation achieves a better and shorter burnout.

Dosing coal-air-gas mixture for the burnout can be adjusted automatically when the throughput changes, by increasing the pressure and increasing the gap of the e-jector changes in connection with the axial displacement of the nozzle needle 1.

The change in the length of the Zersteuber sleeve and position is due to the different coal quality,

Anlagenbau Berberich GmbH './■' <"·· '" Sheet "3- State of the art

It is known that dosing and mixing nozzles with full jet were used.

These systems have the disadvantage that the mixture was pressed into the full mixed air section or that the full mixture jet was sucked in by a vacuum. Since the mixture is not a homogeneous structure, segregation takes place in the full jet, in addition, in the full jet there is segregation due to the different flow speeds after ignition and a bad burnout. DESCRIPTION OF THE INVENTION

The invention avoids these disadvantages in that the metering takes place through the opening of the nozzle needle 1 and the mixture is formed into a tubular film which after leaving the annular opening through the am At the end of the nozzle needle end 3, heated compressed air is pressed in when it emerges from the atomizer sleeve 5a, the liquid present in the mixture is evaporated and due to the evaporation in the expansion room 16, whereby a fine atomization of the existing coal dust is achieved.

The coordination of temperature and air pressure depends on the wall thickness of the tubular film or thin-walled pipe.

The change in length of the atomizer sleeve 5a and position, to the E-Jector Annular gap Π is required when using different carbon qualities.

Plant construction Berberich GrribH !. * * * * Sheet -4-

Drawing description:

Fi £. 1 shows a section through the schematically illustrated Dosing-and-atomizing nozzle. (When closed)

1 nozzle needle

2 hole

3 nozzle needle end

4 nozzle needle head

5 Distribution ch 5a atomizer sleeve

6 nozzle needle tip

7 nozzle needle guide

8 nozzle needle seal

9 Jet needle control

Pressure-air-gas connection E. ^ Jektor annular gap E. jector compressed gas connection, mixture space Line connection for the mixture space Atomizer - tube expansion space

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Claims (1)

■ · ■> ·· Plant construction Berberich GmbH t. _{* ·,.} *.? ·· · ··· Biatt -Z- Protection claim 1 Dosing and atomizing nozzle for solid-liquid mixtures, preferably coal dust-water or coal dust-oil mixtures, characterized in that a bore ^) is guided through the nozzle needle ^!) From the nozzle needle end (3) to the nozzle needle head ^ in the distributor area ( 5 \ over which the atomizer sleeve (5a) is adapted to the flow shape of the nozzle needle heads and continuously merges into the nozzle tip (jj) and the transition from the atomizer sleeve to the nozzle tip with the annular gap 111) of the E-jector closes in the open state, which The nozzle needle Cl) is stored in the long guide (7l, through which the mixture chamber Cl 3) and the nozzle needle control \ $) is secured by the nozzle needle seal ^ 8), the nozzle needle tip preferably in its open position with the outlet of the atomizer Rohrs [A 5 ^s »terminates. Protection claim 2 Dosing and atomizing nozzle for solid-liquid mixtures, preferably coal dust-water or coal dust-oil mixtures, characterized in that the atomizer sleeve ^ 5a) consists of a Sintered ceramic or a sintered metal or consists of a any material is made as a nozzle ring. Claim 3 Dosing and atomizing nozzle for solid-liquid mixtures, preferably coal dust-water or coal dust-oil mixtures, characterized in that the lengths of the atomizer sleeve ^ ßa ^ is variable and as required in front of or behind the E-Jector annular gap ^ ll ^ ends. Protection claim 4 Dosing and atomizing nozzle for solid-liquid mixtures, preferably coal dust-water or coal dust-oil mixtures, characterized in that the nozzle needle tip with twist grooves and the length of the nozzle needle tip ^ 6) is variable. Protection claim 5 Dosing and atomizing nozzle for a mixture of pollutants and liquids, preferably coal dust-water or coal dust-oil mixtures, characterized in that the Zjsjstäuber-RohrIj5! is preferably is provided with twist grooves. • * 1 1 * t it ι t t t 111 • I II · I III ■ · · * lltll I * · · i I.