DEP0048759DA - - Google Patents

Description

Patent attorney
f, Uliianastr, S

D 11

1 ü r r w e r k β

Äatingen - East.

Distributor for pulverized coal combustion «

Bi® invention relates to a divider for pulverized coal combustion with several burners, which the dust τοη one Sinblaae— mill is cited.

With pulverized coal firing, which the coal dust by means of an injection mill It is well known that it is very difficult to get the dust out of the chair of the mill starting that it is evenly on the coal dust pipes. distributed to one of its burners because of the coal numb air mix very quickly rtx one Segregation tends to mod at all points of the Impact from the interior of the interior is different is depending on the flow conditions * Condition for properly working coal exhaust firing

is, however, that the same mixing ratio emerges at all burners « Is there also a valve gate behind i.mx soles—

βtaub Buhl · βο results verifiable already in Aub blsestutxen this fan * due dmroh the unilateral suction TIAD the effect of centrifugal force, an unequal distribution of dust.

It has been shown that even when installing flaps and slides, an even distribution cannot be achieved. Ss has already been suggested to build in parallel “sheet metal walls” arranged in steps behind a “bend in the drilling” in the main line, ”which the dust is caught and wiped equally, that is, in strips. Section ύ, and τ main line are distributed rope · This version is not only cumbersome and complicated, but has amen to iiaohteil that they only _(temporary and "was in a particular drilling area immediately behind & mn built steering walls is effective, but their" effectiveness loses However, if the main line is very long, this device cannot be used in a line that has no pipe bends, since the even distribution of the dust over the individual spaces between the metal sheets is essential for centrifugal forces to become effective.

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All these disadvantages and difficulties are eliminated according to the invention dadaroll that the mill baw. the fan is connected to a mis-distributor, so that the heat exchanger is often routed to a pipe and a burner.

Suroli the arrangement of a dividers according to the invention a good "and equal mixture avoidance of the" tribe with the Irtift vox entry into the one of his branches achieved · As a result of a considerable one calculator size within the "divider" i "u" t the reduction in the speed of the Ingress of dusty smells it sustains and closes on a built-in. A baffle plate or a similarly acting yarn creates a split, energetic change in the transverse center, which causes a considerable turbulence in the dust air mixture and thus a gate mixture. Immediately behind the baffle plate, the dust mixture goes at high speed into the burner pipes.

There are two exports on the drawing ungsbeiepiel β according to the object the invention shown schematically,

and swar seigt

Fig.l «ine designed according to the Xrfindung Coal discharge system old one with brackish air and.

Fig. 2 operated with negative pressure

In the case of the embodiment according to FIG. 1, the fuel is led through the coal waste pipe 1 of the coal dump mill S. Her mill sifter 2 feeds the finest powdered fiKxt in a known manner through the terbinding canal 5 to a textile, while the coarser feed is returned again to the mill, into which the mills enter through duct 4.

You mill 8 and the fan β are set up together by the β wipe them KLektro-iiotor 7 driven.

The extract air mixture emerges from the Fan 6 through the siphon passage 8 in the coal dust riser pipe 9, which ron can be of any length and shape.

Connected to the end of the riser pipe 9 is an upwardly widening coal deaf distributor Io, in which aas sum part of the segregated water is intensely whirled and then distributed to the lines 12 leading directly to the burners. MLt 11 is an impact

plate that maintains the The mouth of the branch lines 12 is located and prevents the material that has not yet been swirled through sufficiently from entering the branch lines entry.

The mixer manifold can of course arranged in the same way directly above the mill the grinder is not followed by a dust fan and the same works under bridge with an inlet fan dead of the ole

Such a design is shown in Pig. 2 This differs from the design according to Mg.l in that instead of the rod mill S, which works with negative pressure, a rod mill S is used for compressed air. In this Auaführung the Miachverteiler Io eats old its riser tube 9 disposed directly on the air separator 3 the mill% · ler fan β is preceded this case of the pulverizer 2 and sucked through the line 4 a Seinlttft to which then pressure line through the! 5 a in the Mill % is printed "

As research has shown, both statements lead to an impeccable one Solution of uniform dust distribution on all burners.

Claims (2)

Expectations. 1.) Distributor for coal defrosting with several burners, which the dust is fed by a reading grinder, characterized in that spacious distributors (Ie) are normally designed as mixers. 2.) distributor according to spoke 1, daduAeh marked » aase dae riser pipe (9) »It can be connected to one operated with compressed air Stauba-iihle (£) is attached. 9 ») distributor according to claim 1, characterized characterized in that the riser pipe (9) directly by interposing the ventilator (6) on one with negative pressure operated dust grinder (2) is. 4 ·) Distributor according to one of the claims 1 to S, characterized in that un_ indirectly below the mouths of the Burner supply lines (12) a baffle plate tll) or several irall plates (11) are built in.