US1146627A - Method of operating gas-producers. - Google Patents

Description

H. KOPPERS.

METHOD OF OPERATING GAS PRODUCERS.

APPLXCATION FILED JULY 27, 1914.

1, 146,627 Patented July 13, 1915.

' taken fr an srarns tee ere HEINRICH KOPIPERS, 01E ESSEN-ON-THE-BIUHB, GERMANY, ASSIGD TOR TO H. KOPPERS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION.

. METHOD 01E OPERATING GAS-PRODUCERS.

sage or passages for the slag, so that the solidification of the slag is prevented by direct heating thereof.

The great advantages to'be derived from withdrawal of the slag in a liquid state are frequently counterbalanced, at least in part, by obstruction of the discharge passage, or of the whole under-part-of the producer, by solidification of the slag, and the re-liquefying of the slag which in such cases is necessary causes very serious interruptionof the Work. For obviating this, the hearth has in some cases been artificially heated, in order to maintain the slag in a liquid state, but the arrangements for thispurpose are inconvenient and have not. obtained complete success in practice.

According to my invention a portion of the gas generated is taken from the upper part of the producer and led downward over the hearth. This not only obviates the necessity for artificial heating of the slag, but the direct heating of the slag by the gas produces the desired result in a most efiicient manner. The passage of the gas through the slag discharge orifice in itself assists in preventing obstruction of this ori- For further utilizing portion of the gas which has been used as described, it is of advantage to provide the producer with a chamber into which the discharge passage leads, similar to the outer hearth of a cupola in foundry practice. The is nthis chamber for further use.

may 3 products of combust' 1. ascent la ye i For he the pro reduced manner. tain qua Specification of Letters Patent.

through the slag discharge orifice and outer chamber, and back to the producer, is thus obtained. The heat of gas is utilized, and the gas is recovered or regenerated after being burnt inthe outer chamber.

Apparatus suitable for carrying the invention into efiect is shown in the accompanying drawings, in which Figure .1 is a cross-section thereof; Fig. 2 is a cross section to a larger scale, showing a special construction of the outer chamber. The shaft a of the producer is of the usual type, with a blast pipe 6 and twyers c. The hearth d, which may have a flap door and a trough for separated iron, is provided with a slag discharge passage or duct 6, leading to an outer chamber f. A pipe 9, with a steam injector 7a,

the shaft on.

A portion of the very hot gases formed in front of the twyers c is taken through the duct 6 to the chamber 7", and these gases (or their products of combustion, if they are burnt in the chamber 7') are forcedfrom the chamber 7' through .the pipe 5/ to the producer, by the injector h.- The slag is thus heated and maintained in a liquidstate, and

. the passage through the duct 6 is kept clear.

Such carbon dio'xid as is presentin the gas, either due to partial combustion in the chamber 7, is reduced to carbon monoXid upon issuing from the pipe 9 into the producer. The heating of the slag is thus effected practically without loss, as the gas is restored to the producer, together with the heat not given off by the same to the slag.

In the construction shown in Fig. 2 the outer chamber is formed by a bell or dome f sealed by partial immersion in water in a tank is. This arrangement affords several advantages. The sealing of the chamber automatically adjusts itself to varying prossures and the liquid slag, dropping into the water, is granulated and reduced to a state in which it can be most conveniently re- St T 31111 water, F15.

Patented July 313, 1915. Application filed July 27, 1914.. Serial No. 853,349.

lated. The gas which issues from the pas- Sage 6 remains over the Water level in the bell f, and this water level adjusts itself, in

relation to the water level outside the bell,-

according to the pressure of the gas. No combustion of the gas for heating purposes takes place in the bell, and the gas can be taken throughv a 'pipeback to the producer. As the gas pressure at the upper part of the producer is lower than that at the bottom, owing to the intervening fuel, no artificial pressure is required order'to return the ducer with discharge of the slag in a liquid state, which consists in causing a portion of the hot gas generated to passwlth the slag through the slag discharge passage, and in receiving said portion of the gas in an outer chamber. Y r

3. The method of operating a gas producer with discharge of the slag'in a liquid state, which consists in causing a portion of the hot gas generated to pass with the slag through the'slag discharge passage, in receiving said portion of the gas in an outer chamber, and returning same to the producer. I

4. The method of operating a gas producer with discharge of the slag in a liquid state, which consists in causing a portion of the hot gasgeneratedto pass with the slag through the slag discharge passage, in re ceiving said portlon of the gas in anouter,

chamber, and returning same to the producer bymeans'of an ih]ec tor.

5. The method of operating a "gas pro-' ducer with discharge of the slag in a liquid I state, which consists in causing a portion of the hot gas generated to pass with the slag through the slag discharge passage, and in" receiving said portion of the gas in an outer chamber in which the slag i simvultanepusly' quenched and granulated.

6. The .method oflperating gas pro; ducer withdischarge of the "slag in a liquid state, which consists in causing a portion of the .hot gas generated to pass with the slag through the slag discharge passage, and in receiving said portion of the gas in an outer rchamber in which the slag is simultaneously quenched and granulated, the quenched slag being ,the quenching liquld. q

' HEINRICH KOPPERS.

Witnesses;

WOLD'EM R HA PT, HENRY HASPER.

removed through the seal formed by I

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