Abstract: Means for cleaning the sealing surfaces of coke oven leveling doors and frames, the cleaning means being installed on a coke-pushing machine without any increase in the normal overall length thereof. A carriage extends between and is movable along guideways mounted on the side walls of a surrounding casing, the carriage being provided with liquid nozzles adapted to be directed at the sealing surfaces of the leveling door frame and the sealing surfaces of the leveling door when rotated upwardly. Nozzles are connected through hoses to a supply of high-pressure liquid, the arrangement being such that as the carriage moves along the guideways, high-pressure liquid issuing from the nozzles will clean the sealing surfaces of a leveling door frame and a leveling door when it is rotated upwardly.

Abstract: Apparatus for removing charging hole covers and for cleaning sealing surfaces is carried by a charging car that is movable along an oven roof of a battery of horizontal coke oven chambers. The apparatus includes a support member carried by guides for vertical movement on the charging car. A pivot head is carried by a shaft to pivot about a first axis on the support member. The first axis is inclined at an angle of 45.degree. to vertical. A magnetic gripper is carried by a shaft to rotate about a second axis on the pivot head. A charging hole frame cleaner includes a cleaning tool carried by a shaft to rotate about a third axis on the pivot head. The second and third axes are disposed in a plane at an angle to one another on opposite sides of the first axis and coplanar with the first axis.

Abstract: An apparatus for transferring between chambers of a coke oven charging gases which develop during the charging of the chambers, while preventing the escape of the gases to the surrounding environment, includes first and second covers mounted for movement between first positions closing charging openings through an oven roof and second positions uncovering such openings. Ducts surround the peripheries of the first and second openings, such ducts being filled with a displaceable sealing medium. First and second housings form respective first and second compartments enclosing the first and second covers, respectively, at all positions thereof. The first and second covers have apron members extending into the displaceable sealing medium in the respective ducts when the covers are in the first positions thereof. The housings have at lower portions thereof seals for sealing the compartments from the exterior.

Abstract: An apparatus for cleaning the top or bottom horizontal section of a coke oven door seal ring and which applies approximately constant pressure to all points along its lateral path. A cleaning head is pivotally mounted on the terminal end of an arm member which is, itself, pivotally mounted to oscillate in a horizontal arc on a base structure. An extension of the door cleaner frame is suspended above the arm and on this frame there is mounted a spring. A vertical, spring driven link is attached at its upper terminal end to this spring and at its lower end to the base. This link is also medially attached to the frame so as to pivot in a vertical arc about this point of attachment. A second idler link which is pivotally connected at its top to the frame and at its bottom to the pivoting base keeps the cleaning head from being vertically displaced out of contact with the seal ring.

Abstract: Pyrolysis reaction apparatus and method are described in which carbonizable waste material is fed into the pyrolysis reaction chamber by an inlet conduit which passes through the wall of a heating furnace surrounding such chamber. As a result, the material is immediately vaporized in the reaction chamber due to the high temperature at the inlet portion of the chamber where the material is introduced. A fluid cooling jacket surrounds the inlet conduit to maintain the temperature within such conduit below the melting temperature of the material being transmitted therethrough in order to prevent clogging of the conduit. The material is fed into the reaction chamber by the inlet conduit along an input feed direction which is laterally offset from the axis of the shaft of an impeller for conveying such material through such chamber and is preferably directed toward the tips of the impeller blades in order to prevent clogging of the impeller.

Abstract: A method and apparatus for assisting an operator in a coke cutting operation wherein both a graphic and audio display of the operation are provided. The vibration of the coke drum is measured and after filtering, is recorded on a chart recorder and its amplitude converted to a related audio signal.

Abstract: An apparatus and method for producing alcohol fuel in an efficient and continuous manner are provided. The apparatus and method utilize otherwise lost heat to reduce the amount of heat required to convert feed stock into alcohol fuel. The apparatus and method utilize the supply of feed stock from a hopper through an auger to a cooker vessel, and then in turn to enzyme and fermenting tanks or vessels, which in turn discharge fermented mash to a strainer for separation of the alcohol beer from the mash. The beer is then discharged to a level controlled beer tank which regulates a residue valve controlling the amount of residue liquid returned to the apparatus and maintained under process. From the beer tank, the flow of the beer is regulated by passage through a non-clogging control valve into a reflux column.

Abstract: Apparatus for servicing coke ovens has a framework movable along the coke oven battery. A horizontally rotatable and vertically pivotable boom has one end mounted on the gantry and a coke oven work tool on the other. The framework includes a coke quenching apparatus and conveying equipment.

Abstract: A method and a device for feeding purging and degraphitizing air into pipes for rich gas leading to the heating walls of coke ovens. In the device a first cross-sectional opening is connected to a pipe for rich gas. This opening can be opened and closed with a first gate and is adapted to initially release only a relatively small cross-sectional aperture for passing purging air therethrough. A second cross-sectional opening is provided in the device, which is connected to the pipe for rich gas. The second opening can be opened and closed with a second gate and is adapted to release successively, with a time delay after the first cross-sectional opening, a relatively larger cross-section for passing degraphitizing air therethrough. An exchangeable screen can be placed in the aperture in the first cross-sectional opening. The degraphitizing air enters the pipe for burning off the graphite deposits resulting from the rich gas.

Abstract: An apparatus that employs a pair of high peripheral speed impact cutters to remove hard carbonaceous deposits from the lateral surfaces of the refractory lining of coke oven doors. The motion of these cutters is synchronized with that of an element of the apparatus which displaces it from one position to another on the door, and, in one embodiment, means are also provided to scrape tarry carbonaceous deposits from the door's seal ring.

Abstract: A process and apparatus for the pyrolysis of coal or other hydrocarbon bearing materials in which the material is fed into the upper end of a rotating cylinder and is heated in a plurality of stages, the heated material passing from the cylinder into a char pit, and treating the resulting materials to separate them into fuels having different characteristics.One feature of the invention is the addition of CaO or NaHCO.sub.3 to the charged materials and addition of H.sub.2 O in the char pit to facilitate removal of sulfur.Another feature is the scraping and brushing of the inside surfaces of the rotary cylinder to clean the interior of the cylinder during the conduct of the process.

Abstract: The apparatus comprises a driven rotatable shaft carrying at its working end rotary scraper means and a tapered centering device in advance of the scraper means which is freely rotatable with respect thereto. The shaft end carrying the scraper means and the centering device is connected to the driven portion of the shaft by a universal joint. The scraper means are connected to the shaft behind the universal joint by several circumferentially spaced spring-loading means which normally keep the scraper means and centering device normal to the shaft but which permit those means to tilt relative to the shaft if the latter is angularly misaligned with a clean-out opening. Thus, the scraper tools are always in contact with a flat cover seat. The centering means have outwardly extending stops which make contact with the cover seat and limit the penetration of the centering means into the ascension pipe opening.

Abstract: A method of and an apparatus for cleaning the interiors of risers of coking chambers of a coke oven wherein a head provided with scrapers, hydraulic cleaning means or oxygen supply for burning off deposits, is introduced laterally into the coking furnace below the riser and caused to elevate through the riser. Thereafter the head is lowered and the apparatus withdrawn laterally through the coking chamber.

Abstract: A door frame cleaner for coke ovens in which a supporting frame is mounted on a main frame, which is movable toward or away from a door frame, in such a way that the supporting frame can be moved laterally relative to the main frame in parallel therewith; a vertically reciprocable frame is mounted on the supporting frame at the front side thereof remote from the main frame; at least one pair of L-shaped levers are horizontally pivotably mounted on the vertically reciprocable frame; a front surface scraper is mounted on an outwardly extended arm of each L-shaped lever while an inner surface scraper, on the forwardly extended arm thereof; and a bias spring is so loaded that the forwardly extended arms of the L-shaped levers are normally moved toward each other, whereby even when there exist some misalignments between the scrapers on the one hand and the door frame on the other hand as the main frame is advanced, the supporting frame is so moved that the scrapers are automatically aligned with the door frame and

Abstract: An apparatus having an element for cleaning deposits from the edge of a doorjamb or door of a coking oven is provided with a heater for maintaining this element at a temperature above the softening point of the deposits, normally around 150.degree. C. The element may be a scraper or brush and the heater may be an electrical resistance-type heater, a device for directing a heated gas stream at the element, or a system wherein a heated fluid is passed through the element.

Abstract: An arrangement for discharging coke from a cooling shaft supplied with cooling gas, has one or several coke stripping members arranged to engage in a mass of coke discharged from the cooling shaft, a supporting element for supporting stripping members and rotating together with the latter, and a housing in which the supporting element together with the coke stripping member are accommodated and which is sealed from the atmosphere.

Abstract: A solar distillation unit is disclosed capable of operating entirely off solar radiation and intended for large scale industrial use offshore. A lens focusing system housed within an enclosed shell focuses the incident radiation from the sun on a heating element. Saltwater or contaminated fresh water is ejected toward the heating element at a predetermined rate resulting in the immediate evaporation of the water. The water vapor migrates and condenses on the cooler inner surface of the shell running to the bottom where it is collected and removed as fresh water.

Abstract: A device for opening, closing and cleaning fill holes of a coke oven comprises a self-supporting carrying frame extending above the fill holes and supporting a runway for an overhead crane and further supports spring-biased bell seals for respective fill holes; a manipulation unit is suspended on the crane and includes a vertical thrust drive and a rotary drive coupled respectively to a manipulation head which is driven into engagement with actuation means for respective bell seals to selectively open and close the bell and to rotate simultaneously cleaning knives in each fill hole.

Abstract: A gas-transfer tube assembly is used to extract charging gases through an orifice in the roof of one coke oven chamber and discharge the gases into an adjacent second coke oven chamber through an orifice in the roof thereof. Each orifice has a riser with an annular water seal normally closed by a removable cover. The gas-transfer tube assembly includes downwardly-extending tubular end portions with elbow parts that are selectively connected together by a straight mid-section used to change the spacing between the downwardly-extending end portions. The gas-transfer tube assembly is supported for vertical movement on a car that runs along a monorail supported by buckstays. The car is stabilized by rollers at the top of the car to engage a rail.

Abstract: A door cleaner is capable of automatically scraping a door side, knife edge and recessed inside surface to remove tar and the like adhered thereto. The cleaner can remove both viscous material at the knife edge and recessed inside surface of the door and dried and solid material at the door side close to the coking chamber. Jet nozzles are arranged on scraper devices for cleaning the knife edge and the recessed inside areas to completely scrape and further wash away the viscous tars adhered thereto.

Abstract: An apparatus for cleaning surfaces, particularly both vertical surfaces, of a plug of a coke oven door. The apparatus has a pair of rotary scrapers adapted to be moved up and down in contact with both vertical surfaces of the plug. Each rotary scraper incorporates a screw type cutter for a higher cleaning efficiency. In order to facilitate the precise location of the coke oven door in relation to the scrapers, the cleaning apparatus further has a door holding device adapted to receive the coke oven door at a position in front of the scrapers and to convey the same to the cleaning position. Also, the cleaning apparatus has a scraper cleaning device adapted for fitting the spiral groove of each scraper to move along the latter as the scraper is rotated, thereby to remove tar or the like deposits from the spiral groove of the scraper.

Abstract: Apparatus is described for cleaning the interior of gooseneck elbows of coke oven ascension pipes. A powered cleaning mechanism carried by the coke oven larry car is mounted on a platform that is reciprocably movable between the larry car and the elbow to be cleaned over a track and roller system protected against the disruptive effects of accumulated coal or other debris. A cam and follower arrangement is operative to automatically guide the operating end of the cleaning mechanism within the interior of the elbow thereby eliminating the need for a workman's manually guiding and manipulating the same.

Abstract: An extendible hopper is mounted to the undercarriage of a pusher machine and is operable to be extended to engage the face of the coke oven battery, between the buckstays and just below the door jamb, to catch hot coke that spills out of coke ovens as the door is removed and the pusher ram is retracted. A bin is also mounted to the undercarriage of the pusher machine to receive the hot coke collected by the extendible hopper. Quench sprays are mounted to the bin to quench the hot coke, and suction means are mounted to the bin to draw off pollutants that emanate from the hot coke and the quench thereof.

Abstract: A solar distillation unit is disclosed capable of operating entirely off solar radiation and intended for large scale industrial use offshore. A lens focusing system housed within an enclosed shell focuses the incident radiation from the sun on a heating element. Saltwater or contaminated fresh water is ejected toward the heating element at a predetermined rate resulting in the immediate evaporation of the water. The water vapor migrates and condenses on the cooler inner surface of the shell running to the bottom where it is collected and removed as fresh water.

Abstract: In a coke oven coke side door machine, a bottom tray is mounted to collect spillage that results from the removal of coke oven doors as well as the residue buildup that is scraped from the door seals and bottom plugs during the door cleaning operation. Trays, in the form of inclined planes, are extended from the door machine to catch the coke spillage from the oven and to catch the residue buildup which is scraped from the door jambs during the jamb cleaning operations. This material gravitates down the trays into the catch pan. A scraper then pushes the material accumulated in the catch pan to one end of that catch pan where a conveyor carries it to a dump bucket. The dump bucket can be dumped when the door machine is positioned adjacent a quench car. All of the above apparatus is mounted onto and within the confines of the door machine.

Abstract: This invention provides an apparatus for the single spot servicing of a coke oven on the coke side of an oven battery. The apparatus includes a turret with oven servicing heads affixed thereto and mounted for rotational movement on the free end of a support arm which is mounted for pivotal movement about a fixed point on the car. Pantographic like linkage is provided to coordinate the rotational and pivotal movement of the turret assembly. A coke guide carriage is mounted for reciprocal movement along a rail system consisting of two rails in an angled relationship. The carriage and turret are mounted on the car to permit the sequential indexing of these servicing devices for use at a selected oven in the battery without repositioning of the servicing car relative to the battery.

Abstract: A coker blow down recovery system for recovering additional useful fuel components such as C.sub.1 --C.sub.7 hydrocarbons from a coker vessel is disclosed. A significant reduction in sulfur components contained in coker blow down gases, e.g. flare gases, is also achieved.

Abstract: The cleaning apparatus includes: (A) a cleaning head having a plurality of angled side by side chisel-like blades, the end sections of which are affixed to a pivotable member having one end portion secured to a frame member, said pivotable member allowing said blades to traverse an arcuate path, said cleaning head having a centrally located pivotable member for affixing cleaning head to a carriage and allowing for uniform loading of blades against surface to be cleaned; (B) a carriage for transporting the cleaning head in a reciprocal path across the periphery of an open door surface to be cleaned, pivotably connected to the cleaning head by the centrally located pivotable member and means for driving said carriage; and (C) a supporting ram affixed to the carriage on the side opposite from the cleaning head, and means for moving the carriage and cleaning head toward and away from the surface to be cleaned.

Abstract: One cycle of operations for pushing-out of the coke, including door removal, jamb cleaning, coke guidance and reinstallation of the removed door can be conducted on one spot by employment of a common passage system for door extractor, jamb cleaner and coke guide cage, and of an automatic centering mechanism which allows the car to be positioned at once exactly in front of the coking chamber without necessity of highly skilled workman.

Abstract: A closed reactor for the thermal cracking of heavy oils, having an internally mounted, rotatable injection pipe. The injection pipe is adapted to spurt preheated raw material under pressure against the inner wall surfaces of the reactor while rotating to remove coke which has deposited on the reactor walls during the previous cracking operation.

Abstract: Any type of door bottom surface can be completely cleaned by the cleaning apparatus of this invention which comprises a carriage which is driven along a pair of horizontal platforms per se forming therebetween a passage for the carriage, a pair of supporting plates pivotably mounted on the carriage, a radial cutter device rotatably held by the supporting plates at the latter's frontward ends, said radial cutter device being cylindrical and having thereon several cutting blades radially extending and longitudinally aligned in parallel, a pair of coil springs charged between said front ends of the supporting plates and front portions of the carriage, and drive means for moving the radial cutter device and the carriage itself.

Abstract: An improved cleaning apparatus for the removal of carbonaceous deposits from the inner surfaces of the ascension pipe elbows and ascension pipe employed on coke ovens. The cleaning apparatus is comprised of a base support, a movable support and a cleaning element. The base support is mounted on a larry car and the movable support is superimposed upon and connected to the base support. The cleaning element is pivotally attached to the movable support and is equipped with a cleaning head mounted on the end of an arm and means for moving the arm in and out of the pipe which is to be cleaned.

Abstract: A decoking apparatus suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils the apparatus essentially including a rotatable main injection pipe to be disposed in the reaction vessel and having a multitude of jet nozzles along its length, and a second or auxiliary injection pipe positioned in the proximity of the main injection pipe to inject a scrubbing liquid over the outer peripheral walls of the main injection pipe to prevent deposition of coke. The main and auxiliary injection pipes are both supplied with heavy petroleum oil to remove the coke deposition from the reactor wall by the heavy petroleum oil jets from the main injection pipe while wetting the exterior of the main pipe with the heavy petroleum oil injected by the auxiliary injection pipe.

Abstract: Machine for cleaning the peripheral sealing surfaces of rectangular coke oven doors or door jambs. A high pressure water jet nozzle is mounted on an eight-wheeled carriage, the nozzle being directed at the sealing surface to be cleaned. The carriage is driven by a chain drive around a closed rectangular track formed by four tubular members which are held in fixed spatial relationship with one another by supports, thereby positively locating the carriage in all directions except its direction of travel.

Abstract: A process of treating a coke oven door and jamb with a material containing micron colloidal particles of graphite in a liquid carrier is described that forms a penetrating and surface coating on the coke oven doors and jambs which acts to prevent leakage of tar and other coke by-products as heretofore common in the art and the resultant inability of maintaining a sealing relation between the door and jamb.

Abstract: A coke oven door construction, adaptable for either the pusher side or the coke side of the oven, has a diaphragm arranged so as to exert an even pressure all around the door and associated jamb when the door is locked in the jamb by a suitable locking device. After the door has been locked in place, air is connected to the bottom of the door so as to permit injection of a mixture of air and a suitable anti-stick agent all around the door diaphragm and onto the sealing surface of the associated jamb. The anti-stick agent keeps carbon and other foreign matter from sticking to the diaphragm and jamb surfaces. Further, if a fire occurs between the sealing surfaces, it can be extinguished by connecting the air to the doors. The air mixed with the anti-stick agent is preferably preheated before it reaches the jamb surface so as to prevent warping of the jambs.

Abstract: Cooling water for cooling coke in a coking drum is charged into the interior of the coking drum from a plurality of orifices located on the lateral surfaces of the coking drum so as to uniformly distribute the cooling effect provided by the cooling water.

Abstract: Apparatus for cleaning a coke oven door, which has upper and lower closing surfaces and two side closing surfaces which are to be cleaned, the cleaning apparatus being relatively positionable in a position for cleaning when the door is open, comprising a mobile frame having positioning surfaces engageable with guide surfaces at the said upper, lower and two side surfaces of the door in order to locate the door and apparatus in the cleaning position, the frame including horizontally extending upper and lower guide elements and at least one vertically extending guide element, carriages movable along the guide elements, fluid jets carried by said carriages directed (in the cleaning position) at the closing surfaces, at least one jet on the carriage which moves along the vertically extending guide element being connected by at least one resilient element to that carriage and there being at least one follower member connected to the jet which in use engages and is pressed by the resilient element against a guide s

Abstract: A main carriage is displaceable in a transport direction along rails next to the unloading side of a battery of coking chambers. A substantially smaller auxiliary frame is displaceable on the main frame in the same transport direction as the main frame and carries several operating units including a door-removing device, a doorframe cleaner and a guide for conducting coke pushed from the opposite side out of the chamber into a quenching wagon next to the battery. In addition a door cleaner may be provided on the main frame together with a chain conveyor or the like having one flight extending on the main frame in its transport direction next to the battery and another flight extending across the main frame perpendicular to the transport direction so as to empty into the quenching car.

Abstract: A sprinkler for a vent section or part of an ascension pipe of a coke oven which is disposed in the vent pipe of a horizontal coke oven chamber ascension pipe and comprises a sprinkler nozzle body which is a substantially straight pipe and is disconnectably fitted to a hole formed in the vent pipe through a male screw which is formed on an outer wall of the sprinkler nozzle body being screwed to a female screw formed around the hole in the vent pipe. One or more spray holes for spraying water in the radial direction of the axis of the nozzle body are formed at the end of the nozzle body extending into the vent pipe. A male screw, formed at the rear of the nozzle body extending outside of the vent pipe, and a branch pipe, which is branched from the main feed pipe supported on another member equipped on an oven roof, are disconnectably connected by a pipe joint member.

Abstract: A device for automatically detaching and/or loosening coke within a coke oven chamber, particularly such a chamber of the type having an inclined or obliquely extending floor, includes a track support adapted to be mounted at a position confronting the coke removal opening of the coke oven chamber. An elongated poking bar is supported by the track support and has at a first end thereof a stoking or broaching head for abutting or scraping coke within the chamber. A trolley is mounted on the track support for movement therealong, and the poking bar is pivoted to the trolley. A reversibly operable cable drive moves the trolley and thus the poking bar along the track support from an initial position whereat the poking bar is positioned outside of the chamber to an operative position wherein the broaching head of the poking bar is inserted into the chamber to abut against coke therein.

Abstract: A tool provided with a scraping edge is mounted on a support so that it can pivot about a substantially horizontal axis between a lower starting position, an upper end position and one or more intermediate positions in which the scraping edge of the tool engages the bottom surface of a coke oven door plug to scrape deposits off the same. An arrangement is provided for urging the tool towards its upper end position and thereby to make the scraping edge engage the bottom surface of the plug, and a tracking device prevents engagement of the scraping edge with the bottom surface of the plug unless the scraping edge is away from the region where the coke oven door is provided with a door seal.

Abstract: The invention is concerned with an apparatus for scraping the bottom wall of a coke oven chamber adjacent the chamber opening so as to remove deposits which would otherwise prevent the sealing insertion of the chamber door into the opening. The apparatus has a support which can be inserted into and withdrawn from the chamber opening. A scraping tool is mounted on the support so that it can pivot between an upwardly tilted position which it assumes as the apparatus is being inserted into the chamber opening, and a downwardly tilted position in which a horizontally extending scraping edge of the tool engages the bottom wall of the coke oven chamber to scrape away deposits therefrom as the support is withdrawn from the chamber opening. A biasing arrangement biases the scraping tool into engagement with the bottom wall when the scraping tool is in the downwardly pivoted position.

Abstract: An upstanding support is provided and a carriage is mounted on the support for vertical reciprocation between predetermined upper and lower limit positions on the support. A jamb cleaning head is mounted on the carriage for vertical reciprocation therewith along and for cleaning an adjacent upstanding jamb portion. A support structure stationarily positioned relative to an associated coke oven jamb and mounting structure is provided for supporting the upstanding support relative to the stationary support structure for vertical shifting relative thereto. First drive structure is connected between the support and the carriage for driving the latter along the former between the aforementioned limit positions and reversible second drive structure is connected between the stationary support structure and the upstanding support for reversibly variably shifting the upstanding support relative to the stationary support structure.

Abstract: A cleaner for ascension pipes is mounted onto a carriage that is movable on top of a coke oven battery alongside ascension pipes of coke oven chambers in the battery. The cleaner includes a flexible member, anchored at one end to the carriage, and carrying, at the other end, a nozzle block and nozzles. The flexible member is supported by rotatable members, pivotally mounted to the carriage, with one rotatable member being power driven. Means is provided for pivoting the arm to which the powered rotatable member is mounted.The flexible member supports a flexible fluid-carrying hose that connects to the nozzle block and that carries fluid to the nozzles mounted therein. By actuating the power driven rotatable member, the nozzle block and nozzles are reciprocable in the ascension pipes and fluid carried in the hose washes encrusted material from the inner surface of the ascension pipes.

Abstract: Apparatus for cleaning incrusted deposits from the regions of coke oven doors between a central refractory sealing plug and a surrounding sealing edge or strip with the use of two pairs of nozzles carried on the upper and lower ends of a frame which can traverse the inner end of the door on which the sealing plug is carried. The frame has a length preferably one-half the height of the door such that the upper nozzles will clean the upper half of the door while the lower nozzles clean the lower half. The nozzles are pivotally carried on the frame such that they can be actuated to clean the horizontally-extending portions of the door between the sealing plug and the sealing strip at the upper and lower extremities of the door.

Abstract: Apparatus and method for removing tarry deposits from the sealing surface of coke oven doors. At least the lowermost portion of the sealing surface is cleaned by reciprocating, fan-shaped, high pressure water jets, directed so as to undercut the tarry deposit. Removal of the deposits from the side portions of the sealing surface may be accomplished by the use of movable scraper blades which on encountering a hard deposit are adapted to be pressed more firmly into the deposit.

Abstract: In the cellar located below an underjet-type of battery of coke ovens are gas distribution pipes. A gas dispensing nozzle is located within each of the separate pipes which extend from a distribution pipe through the regenerators into the burners for a row of heating flues between two coking chambers. These nozzles are cleaned by injecting compressed air from a pipeline that extends parallel to the rich gas distribution pipe. A nipple opposite each nozzle interconnects the air pipeline and the gas pipe. The nipple receives a plug having either an orifice or a nozzle tube to direct compressed air toward the gas dispensing nozzle. A supply header for compressed air extends along the battery of coke ovens and this header is connected by a valve to each compressed air pipeline in the cellar. A controller responsive to a timer operates the valves during regenerative heating reversals for periodic cleaning of the gas dispensing nozzles with compressed air.

Abstract: A carriage is freely suspended, to be movable in all directions, from a cart movable along rails supported by a fixed coke guide car structure of a coke oven. The carriage has upper and lower drives which move grippers to grip the back of a door to be cleaned and to thus move the freely suspended carriage toward the door. Centering pieces on the carriage contact the edges of the door and center the carriage relative to the specific alignment of the door. The carriage carries a further drive which rotates spindles which cause cleaning instruments mounted thereon to move therealong to clean surfaces of the door.

Abstract: In a coke oven battery, a part of the waste heat gas is recycled to mix with and dilute the rich fuel heating gas, using conduits and valve mechanisms outside the brickwork constituting the battery proper.