SU11662A1 - Coal Combustion Burner - Google Patents

Description

Patent f 5627 describes devices for burning coal fines, mainly for flue-heat boilers, in which fuel from a feed hopper placed in the upper part of the furnace falls on a stepped grate; Combustion air is supplied to the last of the located under the fan. The products of combustion are conducted along a zigzag path in order to separate solid particles from them, which are then sucked off by a steam ejector.

In the proposed furnace, a modified device is used, which serves for suction, using steam-fed channels and an ejector, ash and coal fines, accumulating in space beyond the threshold of the furnace. The use of the enclosed fixture is intended to mechanically produce continuous cleaning of chimneys, as well as to improve the effect of devices of this kind by loosening ash and coal fines by steam.

In FIG. 1 shows a longitudinal section of the device; FIG. 2-side. A view with a section of the outlet pipe; FIG. 3 is a top view; FIG. 4 is a longitudinal section of the ejector and diffuser; FIG. 4-cross section of the ejector; FIG. 5-vertical p13 of the modified device with radial channel arrangement; FIG. 6 is a top view of it in section; FIG. 7 is a vertical sectional view of a modified device with a cylindrical body: FIG. 8 is a top view of it, partly in section.

The modified appliance used in the proposed furnace for sucking off ash and coal fines is placed in the fire tubes of the boilers between the flue threshold 1 (Fig. 1, 2) and the additional threshold 2 and consists of one or more channels 3 (Fig. 3) parallel to each other. to a friend and having at the end of the chamber 4, into which, during the operation of the device, superheated steam enters through pipes 24. In chambers 4, using nozzles 8 (figs. 1 and 3), nozzles 7 are strengthened, and superheated steam, the entrance through them, passes through channels 3 along slots 5 and 6 in their walls, sucking ash and coal fines accumulated during the last between the thresholds 1 and 2. The ends 10 of the channel 3 enter the chamber 11, provided with slots 5 and 6, through which the ash and coal fines are also sucked, and are fixed in the walls of its studs 12. In the center of the chamber 11, a central nozzle is installed on the thread 13 (Fig. 1 and 2), connected to the pipe 14 (Fig. 1, 2, 3, 4 and 4), at the end of which the feed is reinforced ohm from pipe 19, an ejector 15-17 with a detachable nozzle 18 removes the zo, lu and coal fines from channels 3 and chamber 11. Diffuser 22 is connected with it to increase the thrust force reproduced by the ejector (Fig. 4), at the end of which an outlet pipe 23 is located. The condensation water collected in the recess 20 is removed by the tap 21. The described fixture can be modified and made with a number of channels 3 (Figs. 5, 6) placed radially in the housing 2 supported on the disk 1. Channels 3 are in the walls of the slit 3 and 8, through which superheated steam flowing through the pipe 6 is closed at end 10, and the nozzles 7, sucked into the channels 3 and ash coal fines, then through a removable central tube 4 placed in the pipe 5, the ejector. A device for removing ash and coal fines can be made without channels; then on the iron sheet 1, located on the floor of the chamber between the thresholds 1 and 2 (Fig. 1), the cylindrical body 2 (Fig. 7 and 8), with which the strips 9 are connected to the central nozzle b with the outlet pipe 7, is fixed. steam supplied by pipe. D. Be 4, closed at the end 8, the exit through the holes 5, supplies ash and coal fines from the spaces between the strips 9 to the central nozzle 6, from where they are sucked out by an ejector placed in the pipe 7. The described apparatus for suctioning ash and coal fines can also be applied in modifications of the proposed furnace protected by patents nos. 5627 and 10047. Subject patent a. The use of the furnace as described in patent No. 5627, as well as its modifications, described in the patents .Nb 10044 and No. 5627, additional to the patent, to adapt suction from the space beyond the threshold of ash and coal fines, representing a number of channels 3 ( Fig. 1-3), arranged in one or another number, parallel to each other, or a series of channels 3 (Fig. 5.6) placed radially, or a cylindrical body 2 (Fig. 7.8) provided in limiting their walls are slots 5, 6 (fig. 1-3), 3, 8 (fig. 5, 6), 9 (fig. 7, 8) for dragging through them and the surrounding space of ashes or coal fines by streams of superheated steam entering the indicated channels through pipes 24 through chambers 4 with nozzles 7 (Fig. 1-3), through pipe 6 with nozzles 7 (Figs 5, 6), through pipe 4 with holes 5 (fig. 7, 8), and subsequent advancement to the central nozzle 13 (fig. 1--3), 4 (fig. 5, 6), b (fig. 7, 8) and from it into the diversion pipe 14-22-23 (Fig. 4), equipped with an ejector 15-17 with a nozzle 18, a tap 21 for draining condensation water and a diffuser 22 for increasing the thrust force reproduced by the ejector.

Type of. ((Comintern Tsentrizdat Peoples of the USSR. Leningrad. Krasna, 1.