DD207864A1 - REGULAR FAN VALVES WITH BRUED DISTRESS - Google Patents

Abstract

THE INVENTION CONCERNS A REGULATORY FUEL MOWER WITH BRUED DISTRIBUTION INSTALLED ON A DUST-BOILED BOILER, AND IS PARTICULARLY USED FOR FERROUS CONSUMER FUEL PRODUCTION. THE FUEL OF THE FUEL GAS STREAM ADDED TO THE CHAMBER OF COMBUSTIBILITY SHALL BE INCREASED, WHICH SHOULD BE ACHIEVED WITH THE USE OF A CONTINUOUS REDUCTION IN THE DISTRICT OF THE BRUEDENSTRENNSCHTER BY USING A BRUED-DISTRICT RECESSED. IT IS SUFFICIENT TO THAT, THROUGHOUT THE REFERENCE TO THE BRUEDENSTRENNSTERTER, THERE IS AN ADJUSTABLE FLAP ORIENTED ON A LEVEL WHICH PROPOSALLY IS LOCATED NEAR THE CENTER OF THE ENCLOSED ENTRANCE CROSS SECTION OF THE BRUEDEN CHANNEL.

Description

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Title of the invention

Hegelable fan mill with brine separation

Field of application of the invention

^x The invention "relates to an adjustable fan mill with vapor separation, which is installed in a dust-fired boilers and is particularly used for the internal generation of dust for external consumers. foreign consumers are predominantly oil-fired steam generator low power, in which the fuel oil by Kohlenstaub'substituiert is ·

Characteristic of the known technical solutions

From equipped with fan mills boilers is known that one or more fan mills are used for Brennstädernzeugung for foreign consumers, these fan mills are equipped with a Brüdentrennsichter according to DD-WP 60208, Kl 50 c, 8/45. In the Brüdentrennsichter a separation of the gas flowing from the grinding chamber of the fan mill in the Brüdentrennsichter gas (vapor) - dust mixture into a dust-enriched and a low-dust gas mixture. The dust-enriched gas mixture is used for the Brennstauberzeugung, while the low-dust gas stream (vapor stream) over

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a line and the so-called Brüdentrenner the combustion chamber of the boiler is fed. The Brennstaubtaenge contained in the vapor stream thus contributes to the heat generation in the combustion chamber and thus to the steam generation of the boiler. The dust content in the vapor stream and the heat output that can be achieved with it is low, since the task of a broth separation device is to create the highest possible degree of separation, that is to say a gas mixture enriched as much as possible with as little dust as possible,

The above-described generation of the fuel dust is more favorable compared with the likewise known production of fuel dust in a separate, but additional grinding plant. However, there is the disadvantage that the intended for Brennstauberzeugung fan mill is available only to a small extent for steam generation of the boiler »

Object of the invention

Siel the invention is to provide in a fan mill with Brüdentrennsichter $ used for Brennstädernzeugung for foreign consumers, the possibility, if necessary, for example in case of failure of a fan mill, "when using low-calorie lignite or at a power increase of the steam generator fed the Brennstaubanteil of the combustion chamber low-dust gas flow and thus to increase the proportion of the fan mill to the steam generation of the boiler _s without this significantly limits the power content of the fan mill for Brennstauberzeugung to external consumption.

Explanation of the essence of the invention

The object of the invention is to provide a controllable fan mill with Brüdentrennung, in the

by using a known Brüdentrennsichters an optional continuous reduction of the selectivity of the Brüdentrennsichters in favor of an increase of the Brennstaubanteiles of the leading into the combustion chamber of the boiler vapor stream to be achieved.

According to the invention this is achieved in that near the rear wall of the Brüdentrennsichters an adjustable flap is arranged in a plane which preferably corresponds approximately to the middle of the opposite inlet cross-section of the vapor channel.

embodiment

The Brüdentrennsichter 1 sits, as can be seen from the drawing, on the indicated intermediate piece 2, which is arranged above the grinding chamber, not shown, the fan mill. In the upper area of the Brüdentrennsichters 1 is located for the staübarmen gas flow of the vapor channel 3 and adjacent the Brennstaubkanal 4 for the dust-enriched gas stream. The inlet flap to the vapor channel 3 opposite the adjustable flap 5 is arranged vertically and near the rear wall 6 j wherein the plane of attachment of the adjustable flap 5 in. Approximately equal to the middle of the inlet cross-section of the vapor channel 3. In the Brüdentrennsichter 1, the partial separation of the flowing from the intermediate piece 2 coal dust-gas mixture is carried out in a dust-enriched and a low-dust gas stream. By a corresponding employment of the controllable flap 5 between vertical and horizontal position, the coal dust-gas mixture is braked differently and deflected. As a result, the volume of gas and pulverized coal conducted to the vapor channel 3 is more or less increased. The controllable flap 5 is in the normal position in a vertical position and is then without effect.

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The advantage of the solution according to the invention is to use a used for the Brennstauberzeugung for IPremdverbraucher adjustable fan mill with Brüdentrennung if necessary by increasing the coal dust fraction in the vapor stream for the steam generation of the boiler.

Claims (1)

- 5 - Ιό ODO I invention claim Controllable fan mill with separation of bricks on dust-fired boilers, which is used for Brennstädernzeugung for foreign consumers, characterized in that near 4 ^he rear wall (6) of the Brüdentrennsichters (1) an adjustable flap (5) is arranged in a plane, preferably approximately in the middle the opposite inlet cross-section of the vapor channel (3) corresponds. For this a page drawing