US2113015A

US2113015A - Feeding arrangement for gas producers

Info

Publication number: US2113015A
Application number: US58380A
Authority: US
Inventors: Daniels Joseph
Original assignee: Koppers Co Inc
Current assignee: Beazer East Inc
Priority date: 1934-01-09
Filing date: 1936-01-09
Publication date: 1938-04-05
Anticipated expiration: 1955-04-05

Description

April 5, 1938 J. DANIELS 2,113,015

FEEDING ARRANGEMENT FOR GAS PRODUCERS Filed Jan; 9, 1936 2 Sheets-Sheet l J. DANIELS April 5, 1938.

FEEDING ARRANGEMENT FOR GAS PRODUCERS Filed Jan. 9, 1936 2 Sheets-Sheet 2 Jnvenrnr Patented Apr. 5, 1938 UNITED STATES PATENT OFFICE FEEDING ARRANGElWENT' FOR GAS PRODUCERS Joseph Daniels, Essen,

mesne assignments,

Germany, to

assignor, by Koppers Company,

Pittsburgh, Pa., a corporation of Delaware 3 Claims.

The invention relates to an apparatus for feeding the fuel into gas producers and especially into coal-gas producers from a fuel bunker situated outside the gas producer by means of a feeding arrangement which distributes the fuel over the whole section of the gas producer.

The principal object of my present invention is to provide such improvements in the feeding arrangement of gas producers so that the fuel is distributed uniformly and automatically over the whole fuel bed in exact adjustable quantities, quite independent of the quality, i. e. the grading, composition, specific gravity and moisture of the fuel and without the segregation of the fuel.

Another object of my invention is to provide improvements in which the feeding arrangements are gas-tight and so designed, that any condensation of vapours produced by the gasification of the fuel does not cause any trouble in the feeding arrangements.

The principal feature of the invention is characterized by providing between the charging hole in the gas producer roof and the box wheel arranged in the usual manner at the bunker outlet, a gas-tight horizontal feeding pipe, through which the fuel will be led by means. of an oscillating piston having an adjustable stroke in such a way that the feeding pipe is permanently filled with fuel during the operation.

Furthermore, there is provided according to the present invention besides the fuel path formed by the automatic feeder a second fuel path, between the bunker outlet and the charging hole of the gas producer roof. By means of this second fuel path it is possible to feedthe fuel in adjustable quantities very quickly into the gas producer in order to cover if necessary any fire on the fuel surface and to avoid any damages resulting therefrom.

Still further objects of my invention may be taken from the following description of a preferred embodiment of my invention shown on the accompanying drawings in which Fig. 1 shows a vertical section through the feeding arrangement for a gas producer.

Fig, 2 gives a top view of the arrangement illustrated in Fig. 1.

50 The gas producer shaft 2 in which is placed the fuel bed I, is sealed at the top by a rotating cover 3 in which is arranged the fuel charging hole 4. The gas producer cover is supported on rollers 5 in the stationary part of the gas producer roof. A cup sealing 6 ensures the gas wheel gears into the tooth rim 9 of the gas producer cover}.

The fuel to be gasified is delivered from the stationary bunker I ll into a feeding hopper II, which is arranged centrally upon the rotating gas producer cover 3. A box wheel I2 is connected in a gas-tight way to the feeding hopper II by means of which the fuel is delivered in exactly measured quantities from the hopper H to the feeding pipe IS. The vertical feeding pipe 13 is connected to a horizontal feeding pipe I4 in which is provided a reciprocable piston l5 which suitably takes up the whole section of the pipe M. The feeding pipe l4 finally leads into the charging hole 4 of the gas producer roof: Underneath the charging hole 4 there is also provided a chute I6 which is fixed to a shaft l1 reaching through the gas producer roof.

The feeding pipe I4 is so designed, that its section, as shown in Fig. 1, is permanently filled with the fuel which is pushed gradually through the feeding pipe M by means of the piston l5, whereby at every forward stroke of the piston a part of the fuel which has been fed by the box wheel is caught by the piston and then delivered into the feeding pipe l4. After the quantity of fuel has been fed into the feeding pipe, resulting from the forward stroke of the piston, a corresponding quantity of fuel falls at the end of the feeding pipe through the charging pipe 4 onto the distributing chute IS.

The coal plug which is permanently kept in the feeding pipe [4 seals the fuel feeding arrangement against the atmosphere. Any condensations which for instance are formed by the tarry substances and which escape from the coal during the gasification process cannot cause any trouble in the coal plug of the feeding pipe l4.

On the other hand, it is impossible for the gases and vapours which have been formed in the gas producer to escape into the open air, as the coal in the feeding pipe M as well as the box wheel 12 offers a sufficiently high passage resistance to the gas. The movement of the delivery iston I5 is performed by a double lever l8, which fits with one arm into the cutting IQ of the delivery piston l5. The lever I8 is supported on a shaft 20 which is put into an oscillating movement by means of an electric motor 2| by making use of the crank shaft 22 and the rod 23.

- The lever 24 is fixed at the other end of the driving shaft 20. A horizontal rod 25 is connected to the lever .24. A pawl 26 is fitted to the rod 25, which interlocks into the usual tooth rim 2'! of the box wheel in such a way, that at any movement of the rod 25 upon a forward stroke of the piston 15 the box wheel is moved on to a certain extent and on retractive movement of the piston !5, rod 25 and its connections merely idle.

As shown in Fig. 2, a second pawl 28 is arranged at the other end of the rod 25, by means of which the distributing chute I6 is set into operation during the forward stroke of piston 15 and merely idles during the retractive stroke of piston 15.

A hand lever 29 is firmly fixed on the upper end of the chute shaft H, by means of which the chute I6 can be rotated. A lever 3|] is further loosely supported on the shaft ll, which can be firmly coupled with the hand lever 29, by means of the removable pin 3!. The lever 30 carries a roller 32, which is situated within the range of a cam plate 33. This plate is turned by the pawl wheel 34, by making use of the worm 35, and the worm wheel 36.

The cam plate 33 is so designed, that the chute I6 can be moved by the rotation which has been transferred from the cam plate 33 onto the lever 38, so that the end of the chute [6 during the operation of the gas producer, i. e. at that time when the gas producer cover is rotated and the chute moved has to go the way as indicated in Fig. 2 by dotted lines 35. Furthermore, the curve plate has been thus constructed, that the oscillation of the chute can be retarded towards the fuel bed, so that equal quantities of fuel are distributed over every surface unit of the fuel bed.

Sometimes it happens during the operation of the gas producer that the fuel bed is burning through at several points. These points have then to be covered with fuel as quickly as possible, in order to maintain a uniform composition of the gas. For this reason, I have arranged according to my invention a special fuel path in the feeding arrangement. This fuel path consists of an auxiliary outlet 31, which is provided for at the hopper ll. Said outlet is regulated by a valve 39, which must be operated from outside by the hand lever 38. The auxiliary outlet 37 leads to space 40 which is fitted at the top of the charging hole 4 with an outlet which can be closed by means of the plug 4!. The plug 4| can be drawn back upwards with a holding rod which, as shown, goes through the wall of the space 40 at the top.

If a fire spot on the fuel surface has to be covered, the pin 3| of the chute hand lever 29 must be removed, so that the chute l6 can be moved by the hand lever 29, over that point of the fuel bed which has to be filled with fuel. If necessary, the drive for rotating the gas producer cover 3 can be switched off. As soon as the end of the chute l6 has reached the desired position, the valve 39 and the seal plug 4| are opened, thereupon the fuel falls in the desired quantities from the charging hopper H through the space 40 upon the chute l6, quite independently of the fuel delivery by means of the piston l5 in the feeding pipe 14. When the fire spot on the fuel surface has been covered, with fuel, the auxiliary path 40 is again closed, the hand lever 29 of the chute is recoupled with the curve plate lever 30 and the rotating movement of the gas producer cover is again commenced.

As shown on the drawings, an electric motor has been arranged on the rotating gas producer cover for the drive of the various feeding devices. The current is supplied by a suitable sliding contact by making use of a pipe 42, which is fitted to the stationary bunker H! in the center of the gas producer cover and fixed to a hopper crossbrace arranged in the hopper H. Said hopper cross-brace carries at the same time the current feeding cables. The sliding contacts are housed in the casing 43, so that an easy access from outside is rendered possible.

I have described my present invention in connection with the preferred embodiment thereof, but my invention is not limited in all its aspects to the mode of carrying out as described and shown. The invention may be variously embodied within the scope of the following claims.

I claim:

1. Feeding apparatus for gas producers comprising: a rotatable cover having a lower charging inlet with a fuel distributor having an oscillatable shaft for distributing fuel from the lower inlet over the gas producer fuel bed area, an upper hopper for supplying fuel to the inlet, a gas-tight fuel-feed pipe leading at one end to the inlet and communicating at its opposite end with an inlet-conduit therefor, gas-tight fuel measuring means for feeding fuel to the inlet conduit, a manually operable lever and a cam lever disengageably connectable to the hand lever for operating the oscillatable shaft, a piston reciprocable in the fuel-feed pipe, means for actuating the piston, means for actuating the fuel measuring means, cam means for oscillating the cam lever, driving means for reciprocating the piston actuation means, connections from the driving means adapted for actuating the means for actuating the fuel measuring means and the cam means on the forward stroke of the piston and to idle on its retractive stroke, and auxiliary fuel feed outlet and gas sealable conduit means leading from the upper hopper to the charging inlet but by-passing the measuring means and the fuel-feed pipe.

2. Feeding apparatus for gas producers comprising: a rotatable cover having a lower charging inlet with a fuel distributor having an oscillatable shaft for distributing fuel from the lower inlet over the gas producer fuel bed area, an upper hopper for supplying fuel to the inlet, a gas-tight fuel-feed pipe leading at one end to the inlet and communicating at its opposite end with an inlet-conduit therefor, gas-tight fuel measuring means for feeding fuel to the inlet conduit, a manually operable lever and a cam lever for operating the oscillatable shaft, a piston reciprocable in the fuel-feed pipe, means for actuating the piston, means for actuating the fuel measuring means, cam means for oscillating the cam lever, driving means for reciprocating the piston actuation means, connections from the driving means adapted for actuating the means for actuating the fuel measuring means and the cam means on the forward stroke of the piston and to idle on its retractive stroke and auxiliary fuel feed outlet and gas sealable conduit means leading from the upper hopper to the charging inlet but by-passing the measuring means and the fuelfeed pipe.

3. Feeding apparatus for gas producers comprising: a rotatable cover having a lower charging inlet for distributing fuel over the area of the gas producer fuel bed, an upper hopper for supplying fuel to the inlet, a gas-tight fuel feeding pipe in fixed relation relative to and communicating at one end with said inlet and communicating at its opposite end with an inlet conduit therefor, gastight fuel measuring means for feeding measured quantities of fuel to the inlet conduit, a piston reciprocable in said fuel feeding pipe for cutting off a quantity of fuel from the fuel in the inlet conduit, and adapted to cut off gas flow through the fuel feed pipe to the inlet conduit and to advance the fuel only part of the length of the fuel feed pipe, during advancing fuel by the piston from the inlet conduit through the fuel feed pipe to the charging inlet, means for actuating the fuel measuring means, driving-means for reciprocating the piston actuating means, and connections from the driving-means adapted for actuating the means for actuating the fuel measuring means on the forward stroke of the piston and. adapted to idle on the retractive stroke of the piston.

JOSEPH DANIELS.