US2049817A

US2049817A - Coke-oven

Info

Publication number: US2049817A
Application number: US661961A
Authority: US
Inventors: Mcintosh James
Original assignee: CARNEGIE STEEL Co
Current assignee: CARNEGIE STEEL Co
Priority date: 1933-03-21
Filing date: 1933-03-21
Publication date: 1936-08-04
Anticipated expiration: 1953-08-04

Description

Aug. 4, 1936.'

J. M INTOSH I cdKE OVEN Filed March 21, 1955 4 Sheets-She, 1

R. E r L Aug. 4, 1936. 4. 'McINTOSH 2,049,817

' COKE OVEN Filed March 21, '1955 '4 Sheets-Sheet 2 Patented Aug. 4, 1936 UNITED STATES PATENT OFFICE coKE-ovEN Application March 21, 1933, Serial No. 661,961

1 Claim. (01. 202-263) This invention relates in general to coking plants, and has more particular reference to the provision of efiective means for taking care of the smoke incident to the charging or recharging of a heated coking oven.

In the operation of by-product coke-ovens each charge, as completely coked, is pushedv from the coking chamber or oven and a succeeding charge is deposited therein immediately. 0 There is, of course; a high temperature in the oven chamber and as the coal is poured into the oven considerable smokeand gases are evolved, which are commonly discharged directly from the charging or recharging holes and ascension 13 pipes of the ovens into the open air.

This invention has for one of its objects the by-passing of the escaping gas and smoke from the oven being charged into one of the adjacent ovens and thence into the collector main, thereby eliminating the pollution of the atmosphere, the loss of by-products, the damage to the charging car and the hazard to the operators. Another object is the provision of a novel mechanism (to be described in detail) for connecting the oven to be charged to an adjacent oven. I A further object is to provide a novel control for the charging car which will prevent the operation of the car while it is operatively associated with the ovens.

In the drawings:

Figure 1 is a plan view of several ovens of a battery of coke-ovens with the charging mechanism in position.

Figure 2 is a sectional view taken on the line 11-11 of Figure 1.

Figure 3 is a sectional elevation through a battery of ovens showing the charging car mechanism in end elevation.

Figure 4 is a sectional elevation through the charging car and by-pass conduit.

Figure 5 is a sectional'view taken on the line VV of Figure 1.

Referring more particularly to the drawings 45 which show the apparatus of my invention associated with a standard form of by-product oven, the letter A designates a battery of ovens which are provided with the usual charging and recharging openings or holes 2 closed by lids i..

60 The oven to be charged is designated by the numeral 3 while the adjacent oven to which the smoke is evolved from the oven being charged is by-passed is designated by the numeral 5. A loaded electrically propelled charging larry car 56 is shown in position with its hopper spouts 6 directly above the charging holes 2 of the oven 3 to be charged. The larry car is provided with a plurality of charging hoppers equal in number to the number of charging holes in each oven of the battery, and each of the hoppers is provided with one of the spouts 6. Each hopper spout 6 is provided with a vertically movable drop sleeve 9 adapted to be lowered so as to connect the hopper spouts with the charging holes 2 of the oven to be charged.

The hopper spout of the charging larry car nearest the coke discharge end of the ovens is connected to a by-pass conduit 8 of such length that it will bridge the distance between the spout and one of the charging holes of the next adjacent oven. The conduit 8 is providedat its free end with a vertically movable drop sleeve '8 adapted to be lowered and connected with one of the charging openings or holes of the oven adjacent the oven being charged. The four drop sleeves 9 on the larry car hopper spout 6 and the single drop sleeve 17 on the by-pass duct 8 are all adapted to be simultaneously lowered by the larry car operator from his cab. The lowering of the drop sleeves 9 is accomplished by a lever in, links H, line-shaft i2, levers i9 and links it.

The drop sleeve "5 on the discharging end of the by-pass duct or conduit 9 is adapted to be lowered at the same time as the sleeves 9 by means of a lever i5 and cable i6 trained over pulleys ii. The levers it of the operating mechanism for the sleeves 9 are equipped with counterweights 2? which partially counterbalance the weight of the sleeves and effect easier operation in raising them.

The electrically propelled larry car is provided with an operating motor l9 which includes in its circuit a main circuit-breaker E8 of any usual construction, and this circuit-breaker is connected to the operating lever it of the sleeveoperating mechanism by links 29 in such manner that the circuit to the motor I9 is broken when the drop sleeves l and 9 are lowered by the mechanism described above.

After the drop sleeves i and 9 are lowered the cut-01f gates 28 in each of the hoppers of the larry charging car are individually opened by the operator through

levers

22 and 23,

links

24 and 25 and shafts 26, and the coal from the larry car hoppers is permitted'to drop by gravity into the oven 3 being charged. The lever and link operating mechanism for the cut-oif gates 21 is so adjusted that the gates of the end hoppers are opened ten seconds or more before those of the center hoppers so as to permit the coal being b-nl aid

charged to run clear of the brickwork around the charging holes at the ends of theoven, causing any excess in the amount of coal charged to remain in the charging holes at the middle of the oven. This method of charging leaves a gas pocket above the'top oi the coal at each end of 28 which when closed is adapted to prevent coal and dust entering the-conduit or. duct 8 from the hopper spout during the charging operation. The gate 28 when in open position extends into the path of travel of the coal through the hopper spout and the passage or the coal through said spout is adapted to operate or move thegate into operating shaft 28 and 'a counterweight 38 mounted on a lever 28''.

The conduit or duct 8 is provided at its entrance end, which is the end connected'with the hopper spout, with a trap pocket 8 adapted to receive and trap any coal or 'dustwhich may enter the conduit past the valve or gate- 28. The pocket 8 is provided with a counterweightedclosure 8 which may be opened to permit the discharge of any of the-trapped material.

Substantially simultaneously with the opening of the gates 2i to permit the coal being charged to flow to the oven, valves 29 will'be opened to permit steam to flow to aspirator nozzles 30' located in ascension pipes 3| of the

ovens

3 and 5. The steam from the aspirator nozzles 38 induces a suction in the-pusher end of the oven 3 which is being charged and through the gas passage 32 of the adjacent oven 5 to which the conduit 8 delivers its smoke and gases. The suction created in the oven 5 is eiIected through the by-pass conduit or duct 8 and in the coke delivery end of the oven 3 being charged. This suction pulls all of the gas, smoke and vapor from the oven 3 into 'the ascension pipe and thence into the collector main 33.

After the coal has been charged in the oven 3 the cut-off gates 2| are closed by the operator so as to prevent the escape of smoke and gases through the hoppers of the charging car. oven operators next level the coal inthe oven which has been charged, and if an excess of coal has been'charged the excess will be withdrawn from'the'oven so as to leave a clear gas passage along the top of the charged oven.

The.

After the coal been leveled an operator will raise the drop sleeves 3 ot the hoppers, with the exception of the hopper to which the by-pass conduit or duct 8 is connected. The raising of these drop sleeves 9 is done by means of levers 34 and links H which raise the sleeves a suflicient height to permit replacement of the lids I.

Latches 35 are provided for holding the sleeves in scribed above, the operator of the larry car will simultaneously raise all of the drop sleeves I and 9 to their uppermost positions' As the

drop sleeves

1 and 9 are raised to their uppermost positions, the circuit-breaker l3will be automatically closed to complete the circuit to the closed position. The valve or gate 28 has an larry car operating motor J9. The 'lids Lare then replaced on the charging holes at the end of the ovens'3 and 5 through which the sm'oke and gases have been by-passed, and the steam valves 29 will-be closed since the aspirating effect of the steam in the ascension pipes is no longer necessary. After the lids l have all been replaced A coke-oven battery coal-charging larry car carrying a hopper for each of the recharging openings of one oven, means connecting each' of said hoppers with one of said charging openings of the oven to be charged, a smoke conduit connected to and communicating with at least one of said first named means and adapted for. connection with one of the charging openings of an adjacent oven, a valve in'said smoke conduit adjacent its point of communication with said first named means, said valve being operable into closed position by the passage of coal through said first named means, whereby the passage'of coal and dust into said smoke conduit is prevented, said smoke conduit being provided with a trap pocket adjacent its end communicating with said first named means to 'trap any coal and dust passing said valve, said JAMES McINTOSH.

. the larry car is moved along the battery of ovens