US2827424A - Quenching station - Google Patents

Description

March 18, 1958 P. J. HOMAN QUENCH'ING STATION 5 Sheets-Sheet 1 Filed March 9 1953 INVENTOR. fiquLmHomah/ March 18, 1958 P. J. HOMAN 2,827,424

QUENCHING STATION 5 Sheets-Sheet 2 Filed March 9, 1953 P. J. HOMAN QUENCHING STATION March 18, 1958 5 Shegts-Sheet 3 Filed March 9, 1955 INVENTOR. P004 Jamzs Horwml.

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March 18, 1958 P. J. HOMAN 2,827,424

QUENCHING STATION Filed March 9, 1953 5 Sheets-Sheet 4 his a TT'OEA/L)? March 1s, 1.958 P. J. HOMAN 2,

QUENCI-IING STATION Filed March 9, 1955 5 Sheets$heet 5 'XIPSIIW) INVENTOR. lQQUL James Homsm/ his 7 United States QUENCHING STATION Paul J. Human, Pittsburgh, Pa., assignor to Koppers Company, Inc., a corporation of Delaware Application March 9, 1953, Serial No. 341,293

11 Claims. (Cl. 202227) This invention relates to the manufacture of coke and more particularly to an improved and economical apparatus for wet quenching hot coke and forms a continuation-in-part of the copending application Serial No. 261,047, filed December 11, 1951.

In the present invention coke is quenched in a quenching hood that is vented through a stack structure to the atmosphere and the spent quenching liquid is collected in an improved sump system for separation and recovery of coke breeze and other solids therefrom by an improved separation and recovery system after which the solidsfree quenching liquid is discarded as Waste liquor or is recirculated by the improved recirculation system of the copending application back to the quenching hood for quenching more coke.

In a typical wet coke quenching station of the prior art, a large breeze settling sump is used to collect the coke breeze and other solid materials that settle from the spent quenching liquid. The large sump requires a large area for the quenching station and uses valuable land. Moreover, such a sump necessarily has to be deep enough to accommodate the breeze that settles from the spent liquid since such breeze and other solids collecting on the bottom of the sump are removed only at selected intervals by hand or by clam shells attached to a lift. Further, this periodic removal of breeze requires a stopping of the quenching operations during the removal period and, even after the spent quenching liquid has passed through the settling sump, the liquid still contains large amounts of coke breeze and other solids.

The present invention overcomes these difiiculties by providing a novel wet coke quenching system in which shallower sumps may be utilized than in any prior art quenching systems; in which the quenching liquid emerging from the sump system for either disposal or recirculation is substantially devoid of coke breeze and other solid materials, thereby resulting in a cleaner efliuent When it is disposed, and a more economical recirculation system when it is recirculated than in any wet coke quenching system heretofore known; in which a purer and cleaner coke breeze is recovered from the sump system, without shutting down coke quenching operations, in greater quantities, at a more constant rate and at less cost than in any wet coke quenching system heretofore known; and in which, when the quenching liquid is recirculated, a more breeze-free coke is obtained than in any wet coke quenching system heretofore known.

The present invention further provides, in a wet coke quenching station, an improved apparatus for removing coke breeze and other solids from spent quenching liquid,

2,827,424 Patented Mar. 18, 1958 the use of which results in a cleaner coke, a shallower sump system, a more economical spent quenching li a recirculation system when the quenching liquid is recirculated or a cleaner effluent when the spent quenching liquid is discarded, and the recovery of coke breeze in larger quantities at greater rates and at less cost than in any other wet coke quenching system heretofore known.

The present invention further provides, in a wet coke quenching station, an improved economical apparatus for automatically recovering coke breeze and other solids from the bottom of the coke quenching liquid sump system thereof as they are deposited thereon, without stopping quenching operations, the use of which results in the recovery of coke breeze at a faster and more constant rate, in greater quantities and at less cost than in any wet coke quenching system heretofore known.

The present invention further provides an economical apparatus for scraping the bottom of settling or reactor chambers.

The present invention further provides, in a wet coke quenching station, an improved and economical apparatus for recirculating spent quenching liquid from the coke quenching liquid sump system thereof to the quenching hood thereof.

The present invention further provides, in a wet coke quenching station, an improved and economical apparatus for continuously removing coke breeze and other solid materials from the bottom of a breeze settling sump.

The present invention further provides, an improved i apparatus for continuously removing solid materials from the bottom of a settling sump wherein the removing apparatus is subject to a minimum of corrosion.

The present invention further provides, in a wet col-1e quenching station, an improved arrangement of the elements of the station wherein a minimum of space is used by the sump system and wherein the sump has sulficient capacity to hold the total quantity of water used in a single quench.

The present invention further provides, in a wet coke quenching station, an improved and economical filtering arrangement wherein the quenching liquid is drained through a filtering medium in minimum time between quenches.

The present invention further provides an improved and economical arrangement for periodically cleaning the filter medium to prevent plugging.

The present invention provides all these by utilizing, in a coke quenching hood and a quenching liquid sump system for collecting spent quenching liquid drained from said coke quenching hood; an improvement of a vertically disposed coke breeze filtering means separating said sump system into a breeze sump means and a clean quenching liquid sump means, said breeze sump means being positioned under said coke quenching hood and having a capacity sufiicient to hold the total quantity of quenching liquid used in a single quench; an improved means for continuously and automatically removing any breeze that collects in said breeze sump; and, an improved means for removing said coke breeze and solid particles from said coke breeze filtering means through a drain and backwash header connected With the discharge of the vertical H A 1K 7 and system for the practice of the present'invention.

Figure 2 is a longitudinal elevation 'view of the coke quenching station of Fig. 1. V i Y l Figure 3 is an end elevation view of the coke quenching station of Fig. 'l.

Figure 4 is an enlarged sectional view of the scraping apparatus. a p

' Figure 5 is an enlarged cross-sectional end view of the breeze sump and scraping apparatus. With reference to the accompanying drawings a preferred apparatus for practicing the present inventionris now described. v

Referring to Fig. 3 of the drawing, car 1, filled with hot coke from a coke oven (not shown), is rolled along tracks 2 laid on level support 11 under quenching hood 3 having vapor outlet 4 at a top portion thereof, over which is a steel stack '5. This stack, if so desired, may be coated on the inside and outside with an acid-proof sealer. The coke quenching hood rests on a concrete foundation Sand has a concrete floor 9 sloping from rear to front and from both sides toward the center to form a trough orfunnel for channeling spent quenching liquid to a trench 110 in the concrete foundation 8. The entire basin under the hood including the trench 110 is designed to provide capacity for holding the total quantity of water used in'a single quench.

The coke in car 1 rests on a slopedcar bottom or apron 12. I

Quenching liquid flows from a quenching liquid storage and surge tank 13 through a tank conduit 14, thence through a quenching liquid conduit 15 and quenching valve 19 or alternate quenching liquid conduit 15' and alternate quenching valve 19 and thereafter through quenching liquid distributor 16 where it is distributed through one or more pipes 17 to one or more sprays f 18 from which it is sprayed over thehot coke.

Quenching valve 19 or 19' is opened for a predetermined time during a quenching period and closed during a non-quenching period while the car of quenched coke is removed from under the quenching hood and is replaced by a new car of hot coke. Each quenching valve may be operated by a hydraulic control system like that disclosedin copending application Serial No. 261,047. This control system comprises a quenching valve actuator and an alternate quenching valve actuator controlledby the flow of fluid into and out of the actuator or the alternate actuator which is in turn controlled by a solenoid control valve operated electrically by an electrical timer. 7 The electrical timer automatically actuates the solenoid control valve for a predetermined quenching period to allow fresh fluid under pressure from a fluid source to flow through the solenoid valve to the actuator or the alternate actuator and exhaust fluid to flow from one or the other of the actuators through the solenoid valve and to drainage, whereby one of the actuators is actuated to open its respective quenching valve. After the quenching period, the timer automatically actuates the solenoid control valve for a predetermined non-quenching period, allowing fresh fluid under pressure to flow through the solenoid valve in a direction reverse to the direction as in the quenching step and into one or the other of the actuators and simultaneously allowing exhaust fluid from one or the other the solenoid valve and to drainage, whereby one or the other of the actuators is actuated to close its respective quenching valve for a predetermined non-quenching period.

The quenching liquid passing from the sprays 18 flows over the coke and drains from the sloped car bottom or apron 12 through suitable openings, as designated broadly by reference numeral 10, at the bottom of the side 30 of the coke car 1 from which it is channeled by the force of gravity into trench 110. As aforestated the entire basin under the hood, including the trench is designed to provide capacity to hold the total quantity of water used in a single quench. The water collects in the trench '110 which acts as a breeze sump, the coke breeze and other solid materials settling to the bottom 112 of the sump. As may more clearly befseenin Figures 2 and 4 of drawings, the breeze sump bottom inclines upwardly at one end to form .anupwardly sloping, solids discharge ramp end 158 thereof.

The breeze 's'u'mp' is provided. with 'scrapin'g' apparatus 161 which constitutes an improved part of the present invention and which will be described more fully hereinafter. 7

As shown in Figure 5 of the drawings, the spent quenching liquid slowly filters from thebreeze sump 110,.where coke breeze and other solid materials settle, through'the filtering member 136 into the clean water chambers 114, surrounded on three sides by the concrete wall 116; The clean water chamber 114v runs parallel and contiguous to the breeze sump 110', beingseparated therefrom by the verticalfiltering member 136 which constitutesthe fourth wall ofsaid chamber. The chamber may be designedas a plurality of separate chambers or be so designed as to constitute one long chamber throughout. The vertical.

filtering member 136 may consist of one or more filter 'plates, which can be made from -a porous Carborundum -material such as the commercially known Aloxite, other ceramic material, a wire filter cloth, or any other suitable filter material constructed in the form of a rectangular 7 frame to be embedded in the grooves 118 of the wall 116. Positioned in the lower portion of the wall structure 116 of the clean water chamber 114 are outlet passageways 120. These passageways are each connected through elbow conduits 122 to a drain and backwash header 124. The clean water passes from the clean water chamber 114 through passageways and elbow conduits 122, as shown in Figures 1 and 2, into the drain header 12:4 and through an, outlet dip conduit 126 into a clean quenching liquid sump well system- 128. The clean quenching liquid sump well system 128 has a pump room 130 atone end thereof.v I

The-clean quenching liquid flows into this pump room '130 andlis pumped by one of two alternative pumps'49 'or 49' (as, disclosed in the copending application Serial No. 261,047) by one of two alternative motors 50 and 5t) located above the sump well, through a p-umpconduit 49' from conduit pipe 51 either through quenching liquid.

' conduit pipe 15' or 15"and quenching valve 19 or 19' hence to distributor 16, pipes 17: and finally to sprays18, or from 'conduit pipe 51 through. tank conduit-pipe 14 to storagetank-13.

.Storage and surge tank 13 may be equipped witha pressure 'or fioat device which automatically cuts of? pump motorfiti 'or 50' when a certain predetermined liquid level is reached in the tank and automatically turns the pump motors on when the liquid in the tank falls below the predetermined level. j v p During a quenching period when either valve 19 'or 19' is open, quenching liquid flows from tank 13 through tank conduit pipe 14, hence through quenching liquid conduit pipe or 15', valve 19 or 19 and distributor 16 to pipes 17 and finally sprays 18 where it is then showered over the hot coke in car 1.

At the end of a non-quenching period when the clean water chambers 114 are comparatively empty of quenching liquid, 21 valve 154 (Fig. 2) of the conduit 155 which connects the vertical turbines 49 and 49 with the drain header is opened and the valve 127 before the drain header dip pipe 126 is closed, in order to backwash the filter member 136 to prevent plugging. It is obvious that the backwashing operation may be controlled by the timer of the hydraulic control system aforementioned.

The coke breeze and other solids collecting at the bottom of the breeze sump 110 are scraped out of the breeze sump by a scraping device 161, more fully shown in Figures 4 and 5 of the drawings. This scraping device (Figure 4) includes an endless conveyor comprising a plurality of sprockets 162 and 162' which are spaced from each other in a plane that includes the longitudinal axis of the breeze sump. These sprockets are positioned above the level of the liquid level of the breeze sump in order that they will be subjected to a minimum of corrosion, the sprockets extending above the longitudinal axis of the sump in spaced relationship from substantially one end of the sump to the other. Each of the sprockets is spaced an equal distance from the bottom 112 of the sump and the sprocket 162' which is positioned over the upper portion of the ramp end 158 of the sump is at a higher level than the other sprockets 162. A continuous chain 163 of a known type is mounted on the sprockets so that it too is above the aforesaid level of the sump and the sprocket 162 is driven by motor 164. Mounted on this continuous chain 163 are a plurality of scraper arms or paddles 169 each of which has a scraper blade 171 fixed to one end thereof. As shown in Fig. 5, rollers 170 are provided at each scraper arm and these rollers cooperate with guides 172 which guides serve to keep the continuous chain above the level of the liquid level of the sump. When the scraper arms 169 are in the lower fight of the endless path followed by the continuous chain 163, the scraper blades 171 continuously contact the bottom 112 of the collecting sump 11%) to urge any coke breeze and other solids that may have collected thereon toward and along the upwardly inclined ramp end 158 into a hopper 176. The solids are then carried away by a ship hoist system 173 to a storage bin 1%. This equipment provided for removing any coke breeze and other solids from the hopper 176 is only one of a number of possible ways of handling this material.

The motor 164 of the scraping apparatus 161 can be automatically controlled to cause the scraping device to make any number of scraping cycles per unit time. The movement of the scraping device may be controlled by an electric timer synchronized with the quenching and non-quenching cycles.

In no wise is the present invention limited to the above single illustration.

Although the combination of the novel hood, novel sump system, novel scraping device and novel quenching liquid recirculating system all contribute in obtaining a better and purer coke breeze more economically at a faster, more uniform rate, and a cleaner efiiuent or recirculating liquor, the latter of which makes possible a more economical and longer lasting recirculating system and a purer coke product, each novel element of the combination contributes an independently unexpected and improved result.

For example, the stacks may be like those of the copending current application Serial No. 261,047 and may be prefabricated at the manufacturing plant and be lifted into place over the quenching hood. They are not only very cheap to construct but are very easily removable. However, any stacks made of wood may be utilized Whether prefabricated or not.

The filtering means of the present invention may be placed in the quenching liquid sump system of any wet coke quenching station in such a manner that the quenching liquid is forced therethrough, thereby producing a clean efiiuent or a clean recirculating liquid, permitting a shallow sump system and increasing coke breeze yield at a faster rate and at less expense. These filter plates may be composed of ceramic material, wire filter cloth, or other suitable material. The filter area is designed to permit complete draining of the Water through the filter medium in a minimum time between quenches. With this system, the coke breeze is filtered from the water and remains in the trench. The need for a large breeze settling sump is eliminated and the abrasion of pumps, valves, etc., also is eliminated.

The vertical turbine pumps of the present invention may be utilized in any coke quenching liquid recirculatin system to permit pump motors to be installed above ground level where operating conditions are not damp and there are no flood hazards.

The surge and storage tank may be like those described in the aforementioned parent application. Such replaceable, economical, prefabricated wooden tanks may be utilized and may be used in any coke quenching recirculating system, to decrease original and maintenance costs and to prevent corrosion and resulting disintegration.

The scraper apparatus of the present invention may be utilized with any coke quenching liquid sump system, so long as the bottom of the sump system is constructed to form a ramp at one end. It provides an efficient and inexpensive method for handling breeze coke and results in the recovery thereof at a constant and fast rate. Quenching operations need not be halted in order to remove settled coke breeze. None of its moving parts are below the liquid level in the sump and therefore they are not exposed to corrosive quenching liquid.

The scraper apparatus of the present invention may be utilized to remove material from the bottom of any reactor or tank such, as the removal of tar in tar decanting.

Any number of scraper arms may be utilized, for instance the scraping apparatus may be provided with only one arm or may be provided with any number of arms desired.

The scraper blades may be made of stainless steel or any other suitable material. It is particularly advantageous to build those parts of the scraper contacting the quenching liquid, from corrosion-resistant material, such as stainless steel.

Further, in place of the back Washing system aforedescribed, a vibrator may be utilized to continuously vibrate the screens sufliciently to shake off solids collecting thereon.

The most desirable material for the piping in the present invention is Monel or stainless steel, since these metals are the least corrosive.

Although it has been attempted to describe the theoretical bases for the unexpected advantages of the present invention, it is by no means intended that the invention be limited by such theory.

It will be obvious to those skilled in the art that various modifications can be made in the present apparatus in addition to those enumerated hereinabove without departing from the spirit of the invention and it is intended to cover in the claims such modifications as are included within the scope thereof.

The invention claimed is:

1. In a wet coke quenching system comprising: a coke quenching hood having clean. coke quenching liquid showering means and having vapor vent means at an upper portion thereof and vapor vent stack means leading from said vent means to the atmosphere; means for introducing hot coke into and withdrawing quenched coke from said coke quenching hood; clean quenching liquid conduit means v for. conducting clean quenching liquid to said clean, coke quenching liquid showering means, said clean quenching'liquid conduit rneans having valve means for controlling therate of flow of clean quenching liquor therethrough; means for flowing spent quenching liquid containing coke breeze and other, solid particles therein from the quenching hood to a breeze sump means'of a quenchingliquid sumpsystem; the combination of quenching liquid 'sumprsystem'comprising; a breeze sump means positioned under said hood and having a bottom inclined upwardlyiat'one end to form an upwardly sloping solidsldischarge ramp end thereof; a clean quenching .liquid sump well system adjacent said breeze sump means; filtering means interposed between said breeze sump means and said clean quenching liquid sump well system through which spent quenching liquid is adapted to flow in passing from said breeze sump 'means to said clean quenching liquid sump wellsystem, whereby said spent quenching liquid is cleaned by filtering out the breeze and other solid particles therefrom, some of which breeze and solid particles collect on said coke breeze filtering means; means for removing said coke breeze and solid particles from said filtering; means to the bottom of said breeze sump means; means for continuously moving the coke breeze and other solids'from the bottom of said breeze sump means toward and along the upwardly inclined ramp end thereof; and a hopper positioned at the end of'said ramp to receive thelrfemoved coke breeze and other solids. V

2. The apparatus of claim 1' having a recycling means for recycling the clean quenching liquid isaid clean quenching liquid sump-well system {or delivery through said clean quenching liquid. conduit means to said clean coke quenching liquid showering means. i e 3. The apparatus of claim 2 wherein the recycle means comprises a vertical turbine pump means adapted to be submerged below the liquid level of the eleau quenching liquid in said clean quenching liquid sump welljsystem, said vertical turbine pump means being adapted for pumping clean quenching liquid from said clean quenching liquid sump well system i'or delivery through said clean quenching liquid conduit means to the coke showering means for quenching more coke; driving means for said vertical turbine pump means, said driving means being located. above the, liquid level of said clean quenehing liquid sump well system. 3 a W 4. 'The apparatus of claim 3 w herein thefclean quench ling liquid sump wellsys'tem comprises a main clean water sump well means having said vertical turbine pumps communicating V therewith apluralitybf glean 7 water chambers positioned between said main fsump'well means and said-breeze sump meansifiltering'means being vertically disposed-between saidclean 'watergchambers of said clean quenching liquid sumpwell system: and said breeze sump means, said clean water chambers communicably connecting said main clean watersunip wells with said breeze sump well means so that quer iching 'liquid may flow from'said breeze'surnp means through said vertically disposed filtering means and said clean water chambers'into said main clean watersump well means. l

5. The apparatus of claim 4 wherein means for removing said coke breezeand solid particles from said filtering means to the bottom ofos aid breeze; sumplmeans comprises a drain and backwash header c'onneciing s aid clean waterchambers with said clean water sump well means so that clean vvaterjmaybe drained from said clean water chambers into'saidimaineieau water sump well means, saidheader being further; ecnnected with the discharge oisaidyerticalturbine pumps so that the vertically disposed filtering'means may be backwashed periodically to prevent plugging. f 6. The apparatus of claim 5,: said bi'ee'ze'surrip means having a capacity suiiicient to hold the total quantity of Lquenching' liquid-used in a single quench and a trench adjacent said vertically disposed filtering meanswherein V the coke'breeze and other solids=settle.

,7. The apparatus of claim 6 and in which there is 7 provided a surge and storage tank above the levels of said .coke quenching hood' and said quenching liquid sump system intofwhich clean quenching liquidf may be pumped by said verticalfturbine pump means'froni said clean quenching liquid sump well system when said valve means a of said clean quenching liquid conduit means is closed during a 'non quenching-period and from which clean quenchingliquid may flow through said clean quenching liquid conduit nieansto' said coke showering means when said 'valve means is open 'du'ringa quenchihg period; pump' conduit meanS through which quenching liquid be pumped from said clean quenching liquid sump Isystemf byxsaidf vertical turbine pump means to said jsurge and storage tank when said valve meansof said clean quenchingiliquid conduit means is closed during a non-quenching period, and-through which quenching liquid may flow from said clean quenching liquid sumpfwelljsystem {to Qand thereafterfthrough' said clean quenching liquidcohdiiit means to said coke showering means when said valvemcansof said clean quenching conduitn eans open; during'a quenching period; tank conduitmeansithrough which quenching liquid may be pumpedifromsa id clean quenehing liquid sump well system andsaid pump, conduit means into said tank when conveyor is'injoperation.

the valve meansl-o f thelclean quenching conduit means is closed during ainon-flow quenching: period and'through which quenching liquid may fiow from said tank to said i clean quenchingliquid Teonduit m eans and hence to said coke showering 'means; when'sa id yalve means of said clean quenching iiquid conduitfnieans is o pen during a quenching-period; and automa tic control means attached to the driving means. of said pump means for'maintaining V a predetermineddesired liquid level in saidtank', whereby the pump is turned. on when the liquid falls below the predetermined tank level and shut oii w hen said desired liquidllev el attained U I V '8. The apparatusof claim 1 .infwhichthe means for moving the colce breeze from the bottom rof said brceze sump means com prisesan endlessiconveyor mounted entirely above a level tor the uppermost liquid level of said breeze .sump means, a portion of said conveyor, inclined upwardlyin conformity with the upwardly inclined ramp end of said breeze sump means; and at'least one long scraper arm connected .wit h said conveyor and having a scraper bladeto. 'scrape jthe; bottornl of i said breeze sump means toward and along the upwardly inclined ramp end thereof into said chopper when. said 9. The apparatus of claim 8 wherein said endless conveyor comprises a plurality of spaced sprockets, a continuous chain in meshing engagement with said sprockets and a drive means communicably connected toone of said sprockets to driver said chain meshing therewith'in an endless path, said sprockets of said-conveyor being 7 7 so spaced from thelbottomof said breezesump that when quenching hood, the improvement of a vertically disposed filtering meansseparatin'gsaid sump system into a breeze sump means and'a cleanquenching; liquid sump system adjacent thereto; said breeze sump means being positioned 7 under said coke quenching hood and having a capacity sufiicient to hold the total quantity of quenching liquid used in a single quench, hydraulic means for periodically backwashing and removing coke breeze and solid particles from said vertically disposed filtering means to the bottom of said breeze sump to prevent plugging of said filtering means, and a means for continuously and automatically removing any solids that collect in said breeze sump.

11. The apparatus of claim 10 wherein the means for continuously and automatically removing any breeze that collects in said breeze sump comprises an endless power driven conveyor mounted entirely above said breeze sump means and at least one long arm attached to said conveyor adapted to contact the bottom of said breeze sump means continuously, when moved by the conveyor into the lower flight of the endless path of motion of the conveyor.

References Cited in the file of this patent UNITED STATES PATENTS Owen Mar. 11, Findlay Oct. 14, Marquard July 24, Griflith May 6, Becker Mar. 8, Jane Feb. 8, Smith Jan. 14, Volmer Apr. 1,

FOREIGN PATENTS Germany Feb. 17,

Claims (1)

1. IN A WET COKE QUENCHING SYSTEM COMPRISING: A COKE QUENCHING HOOD HAVING CLEAN, COKE QUENCHING LIQUID SHOWERING MEANS AND HAVING VAPOR VENT MEANS AT AN UPPER PORTION THEREOF AND VAPOR VENT STACK MEANS LEADING FROM SAID VENT MEANS TO THE ATMOSPHERE; MEANS FOR INTRODUCING HOT COKE INTO AND WITHDRAWING QUENCHED COKE FROM SAID COKE QUENCHING HOOD;CLEAN QUENCHING LIQUID CONDUIT MEANS FOR CONDUCTING CLEAN QUENCHING LIQUID TO SAID CLEAN, COKD QUENCHING LIQUID SHOWERING MEANS, SAID CLEAN QUENCHING LIQUID CONDUIT MEANS HAVING VALVE MEANS FOR CONTROLLING THE RATE OF FLOW OF CLEAN QUENCHING LIQYUOR THERETHROUGH; MEANS FOR FLOWING SPENT QUENCHING LIQUID CONTAINING COKE BREEZE AND OTHER SOLID PARTICLES THEREIN FROM THE QUENCHING HOOD TO A BREEZE SUMP MEANS OF A QUENCHING LIQUID SUMP SYSTEM; THE COMBINATION OF QUENCHING LIQUID SUMP SYSTEM COMPRISING; A BREEZE SUMP MEANS POSITIONED UNDER SAID HOOD AND HAVING A BOTTOM INCLINED UPWARDLY AT ONE END TO FORM AN UPWARDLY SLOPING SOLIDS DISCHARGE RAMP END THEREOF, A CLEAN QUENCHING LIQUID SUMP WELL SYSTEM ADJACENT SAID BREEZE SUMP MEANS, FILTERING MEANS INTERPOSED BETWEEN SAID BREEZE SUMP MEANS AND SAID CLEAN QUENCHING LIQUID SUMP WELL SYSTEM THROUGH WHICH SPENT QUENCHING LIQUID IS ADAPTED TO FLOW IN PASSING FROM SAID BREEZE SUMP MEANS TO SAID CLEAN QUENCHING LIQUID SUMP WELL SYSTEM, WHEREBY SAID SPENT QUENCHING LIQUID IS CLEANED BY FILTER-

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