DE104377C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

The previously operated generator firing systems for continuous kilns were set up in such a way that the generator was located at one end of the kiln, with the fuel gas then being led to the individual combustion chambers through multiple long and wide ducts. ^{1 In} addition to the very expensive manufacture of the plant, there was a cooling of the fuel gases to the point of partial condensation, which of course resulted in enormous heat losses.

The well-known heating walls with direct firing are for goods with a low temperature be burned to use advantageously; fly ash exerts its Transfer. in the combustion chambers near the heating walls with direct firing Avoid running completely, not a detrimental one. For goods fired at a higher temperature but if the fly ash is burnt in firmly, which is unpleasant and the goods are of inferior value making discoloration result. One was therefore used in such goods of the fuel gas, but what with the generator firing that has been used up to now Goods are disproportionately priced.

The present invention relates to a heating wall with generator combustion, which the Combine the advantages of gas firing with those of direct firing. To this end the combustion channel is divided into individual chambers by heating walls, each of which has its own peculiarity trained Genaratorfeuerung is provided. The drawing shows in

Fig. Ι such a heating wall, in which the rear wall a is not shown for the sake of clarity.

Fig. 2 shows a section through a combustion chamber with the two adjacent heating walls, namely according to the broken line EFGH of FIG. Represents a section along the broken line ABCD of FIG.

The actual heating wall is formed by two walls α and b, which, leaving a corresponding space free between them, are built into the combustion channel across. Fig. 1 shows a horizontal transverse wall c between the walls α and b approximately halfway up the combustion duct, in the middle of which there is the generator furnace, which is formed by the inclined grate d and the vertical wall e . The fuel is fed in through the vertical shaft f, which is so deep that it is constantly filled with the fresh fuel.

The combustion air for the generator can enter through the openings g made on the base of the furnace in the wall α. Likewise, fresh combustion air can still enter from the side through closable openings h which are provided in plates i , the latter serving to close the access openings k provided in the furnace vault. After removing the plate i , the grate d can be slagged off from the side through the opening k . In wall b there are also openings / above the base of the furnace which can be closed by chamotte slides m and which, when opened, allow the combustion gases to flow directly from one chamber into the other on the base of the furnace before the wall in question is put into operation.

Claims (4)

The gases developed in the furnace rise through the openings η and meet above these with the combustion air, which, heated to a high degree, flows from the adjacent, already burned chamber through the openings ο of the wall α. The developing flame then goes through the openings ρ of the wall b under the furnace ceiling into the chamber and washes around and permeates the material to be fired from top to bottom. The withdrawal takes place through the openings g of the wall a, where they are led through corresponding openings / the wall b into the next chamber. In this they are used immediately to preheat the items to be fired or they are passed through the sole channels q into further chambers. Sliders r are also provided over the openings η , by means of which the size of the passage openings for the gas is regulated, through the openings s in the vault, possibly during operation. The filling chute is set up in such a way that freshly charged coal gets into the closed generator without having to pass the combustion chamber for the goods, so that absolutely no particles of coal and ash can get into the goods. Pat τ claims: i. Generator firing for continuous kilns, characterized by a gasification system de installed between two walls a and b in the combustion channel, to which part of the air coming from the cooling chamber is fed from below, while another part is above the degassing system through openings ο between the walls from occurs 'and here brings the gases rising through the openings η to combustion, whereby through the means of the slide r . the following setting of the openings η both the gasification and the combustion process is regulated. 2. In a generator firing according to claim ι the supply of the fuel after the generator through a hermetically sealed filling shaft f in connection with the latter, through which an escape of even the finest coal particles into the combustion chamber is absolutely impossible. 3. In a generator furnace according to claim 1, the arrangement of lateral openings k which can be closed by plates i , through which the combustion grates d are accessible for the purpose of deslagging. 4. In a generator furnace according to claim ι the arrangement of closable lateral openings h, through which fresh outside air can be passed to the grate d in addition to the heated air supplied through the openings g on the furnace sole. 1 sheet of drawings.