US2204019A - Coal charging hopper for coke ovens - Google Patents

Description

H. KOPPEIRS COAL CHARGING HOPPER FOR COKE OVEN S June 11, 1940.

Filed Nov. 19, 1937 Patented June 11, 1940 2,204,019

COAL CHARGING HOPPER FOR COKE OVENS Heinrich Koppers, Essen, Germany, assignor, by mesne assignments, to Koppers Company, Pittsburgh, Pa., a corporation of Delaware Application November 19, 1937, Serial No. 175,380 In Germany November 20, 1936 2 Claims. (01. 214-45 The present invention relates to hoppers for charging coal or other suitable fuel or mixtures of fuels into coke ovens, for instance into horizontal chamber or retort ovens for the production Further objects and features of my invention may be taken from the following description of a preferred embodiment thereof shown in the accompanying drawing, in which the single figure 5 of coke and gas, and more particularly to those illustrates a vertical section through one of the g hoppers which are mounted on a suitable lorry charging hoppers, built according to my invenrunning over the top of the coke oven battery tion. V and which are provided with two or more out- The charging device comprises a series of lets at the bottom, in order that the coal may be charging hoppers l, arranged side by side. For

fed into the even through the usual charging simplicity, only one of the hoppers is illustrated my openingsprovided therefor in the oven roof. on the drawing. The charging device travels on It is a well-known fact that the diameter of the oven roof 2. The driving means have, howthe charging openings in the oven roof is deever, not been shown on the drawing. Several pendent on the width of the oven chamber. The charging holes 3 are arranged in the oven roof 2.

diameter of the charging holes and also that of The hopper l is provided with upper inclined is the outlet openings in the bunker of the coal surfaces t, extending downwards to a lower spout charging lorry is therefore generally very small. 5, which is situated at a distance greater than It is extremely difficult to discharge moist or, usually from the oven roof 2. It will be noted sticky coal at a higher velocity through the narfrom the drawing that the upper outlet 5 row bottom openings of the charging hopper and measures of an inch or 3 as compared 20 to fill it into the oven. In most cases, it is therewith 95 for the lower outlet H, and the upper fore necessary to do hand-poking work. For outlet 5 is at a distance substantially exeliminating any poking work, it has already been ceeding its 35 diametric dimension from the suggested to equip the charging hoppers with top of the lower outlet ll. Thus it will be apmechanical stirring and scraping devices by parent that the valve outlet 5, which has a free- 25 means of which the coal adhering to the bunker section larger than the connecting nozzle it, will be removed, so as to obtain a uniform and terminates above the top of the connectingnozzle rapid discharge. H at a distance substantially greater than its The main object of the present invention is to own diametric dimension. Thelower spout ii,

provide such improvements in hoppers of coal which is closed by means of segmental valves 3, so charging lorries or the like, which will enable a is of such a large area, that the coal can be disproper and quick discharge of the charging hopcharged when the valves are open, without causpers in a very simple manner, without having ing any blocking. The segmental valves 6 are to use such expensive and complicated stirring operated from the service platform 1 by means and scraping devices. of lever and rod 8. The bottom opening for the 9 The invention now consists in that the lower hopper or bunker is constituted of a lower hopper bunker spout which is above the bottom outlet or bin 9 in which the lower spout 5 enters. The openings for the bunker, and from where the discharging bin 9 is fixed to the hopper I by bunker enlarges towards the top, is provided with means of a ring plate I0 which is above the lower a larger diameter than the bottom bunker's outspout 5 and is of larger diameter. At its bottom, 40 let opening the diameter of which is essentially the discharging bin 9 has a branch or nozzle with similar to that of the charging holes. a sectional area similar to that of the charging In order to ensure a quick discharge of the opening 3, so that the coal leaving the lower spout coal from the inner walls of the charging hoppers 5, can be fed into the oven charging holes 3. The

or bunkers and further to avoid any corrosion increase in diameter of the outlet 5 over the out- 45 favoured by the sticking of the coal to the walls, let H together with the substantially greater the sliding surfaces of the charging hoppers are distance between the two, together with the spaclined with sheet plates, made of zinc, aluminium ing of hopper 9 with a substantial clearance from or asimilar, non-corroding material. The sliding hopper l, form in effect an expansion chamber.

surface must be smooth. These features in cooperation with each other in 50 According to the present invention, the charging hopper or bunker is to be constructed in such a way that a proper discharge is obtained at a higher velocity without any coal sticking to the walls.

conjoint use are effective to cause, especially in conjunction with the smooth action of the inner lining, coal to flow when moist or sticky, through the valved-closed outlet 5 and lower hopper outlet II to the charging hole 3 without sticking, 55

2 r tree frompoking and scraping andrwithout resort to obstructions in the interiors of the hoppers.

The branch or nozzle II is surrounded by a movable mouth piece l3, which can be lowered down to the oven roof by means of lever and rod i2 before charging the oven with coal.

The inner,'inclined surfaces 4 of the charging hopper l are lined with sheet plates made of zinc, aluminium or another non-corroding material, in order to obtain a proper and quick discharge of the coal. 'The inner surfaces of the charging hopper 9 which come into contact with the coal, may also be covered with sheet-plates in a similar way.

I claim:

1. A coke-oven lorry coal-charging receptacle vcomprising: an upper hopper of comparatively large area at its upper part with lower inclined sides tapering to and terminating in an unrestricted lower valve-closed outlet; and a lower' hopper with similarly inclined tapered sides surrounding the lower discharge valve-closedoutlet of the upper hopper with a substantial clearance and terminating in a bottom connecting nozzle outlet to a coke-oven charging hole for connectv ing the lorry upper hopper with the charging hole; and in which the inclined sliding faces of the tapered sides of the upper hopperare inner- .lined with non-corroding sheet plates; and in which the valve-closed outlet has a. free-section larger than the connecting nozzle outlet, and terminstesabovethetepoitheeouneetingnoI-le at a distance substantially greater than its own diametric dimension as to cause, in conjunction with the smooth-action of the inner-lining, the coal material to flow when moist or sticky, through the valve-closed outlet and lower hopper to the charging hole without sticking, free from poking and scraping in the hoppers, the interior of the hoppers and outlets being entirely free from obstructions.

2. A coke-oven lorry coal-charging receptacle comprising: an upper hopper of comparatively large area at its upper part with lower inclined sides tapering to and terminating in an unrestricted lower valve-closed outlet; and a lower hopper with similarly inclined tapered sides surrounding the lower discharge valve-closed outlet of the upper hopper with a substantial clearance and terminating in a bottom connecting nozzle outlet to a coke-oven charging hole for connecting thelorry upper hopper with the charging hole;

and iii-which the valve-closed outlet has a freesection larger than thetconnecting nozzle outlet,

' and terminates abovethe top of the connecting 1 nozzle at a distance substantial y greater than its own diametric dimension as to cause the coal materialto how when moist or sticky, through the valve-closed outlet and lower hopper to the charging hole without sticking, free from poking and scraping in the hoppers, the interior of the hoppers and outlet being entirely free from obstruc- .0

tions.

HEINRICH KOPPERS.

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