JPS60114622A - Method and device for dividing coal flow - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to coal for combustion, and more particularly to a method and apparatus for reliably dividing a large stream of coal into multiple smaller streams.

In the prior art, it has been difficult to satisfactorily divide large streams of airborne coal into smaller streams. One method is to use so-called pneumatic continuous flow splitters in which the tubes conveying the coal are split. However, this method has the following drawbacks. The accuracy of the segmentation is less than desired, there are stability problems, the flow rate can cause erosion, and the variable low flow rate, especially in the conduit, can create deposits and blockages. However, other expensive methods use separate small supply conduits. Finally, L, G, Ca I dwel
“Some Developments i” by
n the Feeding of Coal to F
In the book "Luidized Bed Combustors" it is stated that coal can be distributed between the compartments by means of a rotating device, but that the coal distributed therefrom is in a dense state.

The inventors have discovered that by mechanically evenly dividing a large flow between a plurality of compartments and then transferring the contents of the compartments in a dilute state to each of the smaller conduits, the division of the coal stream is stabilized and It has been found that the scales can be applied evenly and accurately between small streams at low velocities that dramatically reduce erosion.

In a preferred embodiment, distribution to the compartments is provided by a hollow rotor having an outlet offset from the axis of rotation of the rotor.

Next, the configuration and operation of the best embodiment of the present invention will be described with reference to the drawings. The drawings depict a flow divider 10 that is a preferred embodiment of the present invention.

Flow divider 10 is provided with a housing 12 .

A shaft 14, which is driven by a pulley 16 and a belt 18, is rotatably mounted within the housing 12. A hollow conduit rotor 20 is mounted on the shaft 14 so as to rotate together with the shaft 14, and the rotor 2
0 supports a funnel 22 at the artificial end, offset so that the lower end 24 is not coaxial with the shaft 14 but is arranged to rotate and sweep over a lower annulus divided into compartments by walls 26. There is. An outlet tube 28 extends from each compartment separated by a pair of walls 26.

The outlet pipe 28 has a diameter of 38.1 to 50.8 mm (1.5 to
2"), and the inlet conduit filter O is sized to supply the outlet tube 28 with a sufficient amount of air to maintain the desired velocity.

In operation, a sufficient amount of carrier air is injected through the artificial conduit 60 to increase the exit air velocity in the outlet tube 28 to 12.2 m
/s (40t/s). This air volume and velocity is sufficient to convey the coal through the outlet tube 28 in a lean (pneumatic) condition compared to the dense or non-pneumatic configuration dispensed from the splitter in the Caldwell book discussed above. There is.

The coal is crushed by a crusher (not shown).
It is supplied in a particle size of 6.35 myrt (0,25").

As rotor 20 rotates, rotor 20 successively deposits equal amounts of coal into various compartments separated by walls 26.

From these compartments, conveying air from conduit 60 moves through housing 12 and displaces an equal amount of coal through outlet pipe 28.

[Brief explanation of the drawing]

The drawing is a perspective view of the dividing machine of the present invention. 10: Divider 12: No. 14: Shaft 16: Pulley 18: Belt 20: Rotor 22: Funnel 24: Lower end 26: Wall 28: Outlet pipe 60: Inlet pipe drawing] (No change) Kradscher b'v Shiseki First De Proceedings Amendment, dated 1972/1920, 2, Title of the invention, 2;
6. Relationship with the case of the person making the amendment Patent Applicant's Address Illusion - Fumbu Ensi "Near Son K゛・I> Fuo 0 Rate, To 4, Agent 5, Subject of Amendment

Claims (3)

[Claims] (1) Introducing coal into the inlet of a rotor, providing the rotor with an outlet offset from the rotation axis, and rotating the rotor around the rotation axis so that the outlet is connected to a plurality of compartments. - a method of dividing a coal stream into a plurality of equally sized streamlets, comprising moving the coal from said compartment through a streamlet conduit by means of conveying air; (2) A device for dividing coal introduced into a housing into a plurality of streams of equal volume, the apparatus comprising a plurality of compartments within the housing, a plurality of conduits extending from the compartments, and a plurality of conduits extending from the compartments; A coal dividing device comprising a member for distributing coal in equal amounts and a conveying air conduit for introducing air into the housing and distributing it to a plurality of the conduits. (3) The member distributing the coal in equal amounts is a rotatably mounted hollow conduit, and the nousing conduit is offset from the axis of rotation of the rotor and has an outlet located on the area occupied by the compartment. The device according to claim (2), characterized in that it has: