Device and method for regulating the chamber pressure of coking chambers of a coke-oven battery using adjustable diaphragms at the ascending pipe elbow openings into the raw gas receivers

Abstract

A device for regulating the chamber pressure of coking chambers of a coke-oven battery using adjustable iris diaphragms or iris nozzles at the ascending pipe elbow openings in the raw gas receiver. The gas stream flowing from the gas chamber of a coking chamber into the raw gas receiver can thus be regulated so that the pressure in the gas chamber of the coking chamber can be controlled. A method is also disclosed for regulating the gas stream which flows out the gas chamber of a coking chamber, wherein the pressure in the coking chamber is regulated by the control, and wherein also the liquid stream is regulated which serves to wash out the coking gases from the raw gas stream of the coking chamber.

1 . An apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main, comprising
 a coke oven battery consisting of a number of coke oven chambers, wherein   each individual coke oven chamber can be hermetically sealed and is equipped with a standpipe that is connected to a negative pressure-operated crude gas collecting main via a gooseneck, and   the standpipe at the top end of the gooseneck is provided with an opening and its closure that can be opened and closed, and   the gooseneck is equipped with a liquid feed inlet via which the standpipe can be supplied at and/or downstream of the gooseneck with a liquid running into the crude gas collecting main, wherein   downstream of the gooseneck the standpipe opens into the crude gas collecting main via an outlet section, and between the gooseneck and the outlet section there is a diaphragm with an adjustable cross section which is used to close off the gas and liquid flow and which is equipped with a device for adjusting the cross section of the opening, with   either the standpipe gooseneck and the crude gas collecting main being connected via a siphon through which the liquid can drain even when the diaphragm is closed, or   the diaphragm having a cross-sectional slit that leaves part of the diaphragm cross section open even on complete closure.   
     
     
         2 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the opening with the closure at the gooseneck is a cover plate, that for closure is fitted to the opening at the top end above the gooseneck branch and is equipped with a grasp for operation and a hinge at the gooseneck. 
     
     
         3 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the diaphragm consists of plates that can be closed horizontally in a concentric, tangential and circular manner towards the centre of the standpipe. 
     
     
         4 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 3 , wherein the plates are fitted with pins, all of which are mounted in a specially provided slotted opening of a ring positioned above so that the diaphragm opens or closes when the ring moves. 
     
     
         5 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the diaphragm consists of plates that can be closed horizontally in a concentric, secantial and direct manner towards the centre of the standpipe. 
     
     
         6 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 5 , wherein the plates are fitted with pins, said pins being able to be pulled out of the gooseneck by means of levers extending through the gooseneck wall to the outside so that the diaphragm opens or closes when the lever is moved. 
     
     
         7 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the diaphragm consists of plates that are opened by being swung up or down in vertical direction. 
     
     
         8 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 7 , wherein the plates are equipped with a circumferential wire that can be tightened or released by a transmission lever, thus pulling the plates up or letting them down and opening or closing the diaphragm with the gooseneck. 
     
     
         9 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the diaphragm can be adjusted by means of an electric regulating device. 
     
     
         10 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the diaphragm can be adjusted by means of a pneumatic regulating device. 
     
     
         11 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the diaphragms and the regulating device are located in a gooseneck pipe section that can be removed from the gooseneck. 
     
     
         12 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 11 , wherein the removable pipe section is to be flanged to the gooseneck. 
     
     
         13 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the standpipe gooseneck is equipped with a siphon that runs through the middle of the standpipe gooseneck and is enclosed by the diaphragm when closed. 
     
     
         14 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the standpipe gooseneck is equipped with a siphon that laterally passes the standpipe gooseneck outside of the standpipe. 
     
     
         15 . The apparatus for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein the gooseneck pipe with the diaphragm has a diameter of 0.25 m to 0.85 m measured at the point where the diaphragms are located but excluding said diaphragms. 
     
     
         16 . A method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 1 , wherein
 coal is coked in cycles in the coke oven chambers of a coke oven battery, the cycles comprising charging, coking and pushing operations, and   the gas pressure in the coke oven chamber is regulated during the coking process via a control device at the end of the standpipe gooseneck that transports the coking gas from the gas space of the coking chamber to a negative pressure-operated crude gas collecting main, and   the gooseneck of the standpipe out of the coke oven chamber is fed with a liquid stream, wherein   the gas pressure in the gas space of the coke oven chamber is regulated by a diaphragm that changes the cross section of the standpipe gooseneck outlet, the cross section of the diaphragm being regulated by means of a regulating device, and   when the diaphragm is completely closed, the liquid from the standpipe gooseneck discharges into the crude gas collecting main either via a siphon or a slit in the diaphragm.   
     
     
         17 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein the coke oven gas flows into the standpipe gooseneck at a temperature of 700° C. to 1100° C. and is cooled immediately by injecting liquid, with the remaining liquid being discharged into the crude gas collecting main. 
     
     
         18 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein the diaphragm is controlled as a function of the internal pressure of the coke oven chamber. 
     
     
         19 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 18 , wherein opening and closing of the diaphragm is controlled by a computer. 
     
     
         20 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein the cover plate of the standpipe above the branch of the gooseneck is temporarily opened while simultaneously closing the diaphragm when the doors of the coke oven chamber are opened. 
     
     
         21 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein the cover plate located in the standpipe above the standpipe gooseneck branch can be opened or closed pneumatically. 
     
     
         22 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein the regulating device for the diaphragms or for the cover plate is powered by a nitrogen-containing gas. 
     
     
         23 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein the regulating device for the diaphragms or for the cover plate is powered by an air-containing gas. 
     
     
         24 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the gas collecting main according to  claim 16 , wherein the regulating device remains in the control position it was last in if the drive fails. 
     
     
         25 . The method for regulating the chamber pressure of coke oven chambers in a coke oven battery by means of adjustable diaphragms at the standpipe gooseneck outlet openings to the crude gas collecting main according to  claim 16 , wherein if the control mechanism drive fails, the gas pressure in the gas space of the coke oven chamber is regulated by altering the negative pressure in the crude gas collecting main.