Centrally Controlled Coke Oven Aeration System for Primary and Secondary Air

Abstract

This invention relates to a ventilation device for non-recovery coke ovens, said ventilation device consisting of at least one vent port extending through the wall or built-in internals, e.g. a coke oven door, and connecting the oven interior with the outer atmosphere surrounding said oven and wherein said vent port can be closed entirely or partly by means of a locking element. Two locking elements or more are coupled to each other by at least one mechanical coupling element by fastening said coupling element to said locking elements directly or via a lever, and wherein each coupling element is connected to at least one central adjusting element such that said locking elements can be moved, with it being possible for the relevant vent ports to be closed, completely opened or moved into any intermediate position. Ideally this coupling element should be a chain or a screw spindle.

1 - 17 . (canceled) 
   
   
       18 . A ventilation device for supplying primary and secondary air for the combustion of coking gas in cokemaking chambers of coke ovens built in flat-type construction and arranged as a battery of coke ovens, wherein said ventilation device consists of at least one vent port per cokemaking chamber for primary air, said vent port extending through the relevant coke oven door or through its wall surrounding it, said ventilation device furthermore comprising at least one vent port per cokemaking chamber for secondary air and wherein freely-supported locking elements are provided for at least part of said vent ports, comprising
 at least part of the locking elements of said vent ports is mechanically connected to an adjusting element controlled and driven from a central point,   said locking elements can be actuated by said adjusting element depending on the demand for combustion air in the cokemaking chambers,   the mechanical connection of each individual locking element with the central adjusting element can be effected individually, wherein especially the starting position of each individual locking element at the beginning of the cokemaking process of the pertaining cokemaking chamber can be adjusted separately and independently of the other locking elements of the adjacent cokemaking chambers.   
   
   
       19 . A ventilation device according to  claim 18 , wherein at least part of the locking elements for primary air is mechanically connected to an adjusting element and wherein at least part of the locking elements for secondary air is mechanically connected to another adjusting element. 
   
   
       20 . A ventilation device according to  claim 18 , wherein the adjusting element is a rotating chain. 
   
   
       21 . A ventilation device according to  claim 18 , wherein the adjusting element is a screw spindle. 
   
   
       22 . A ventilation device according to  claim 18 , wherein the locking elements are locking plates which are supported such that they are moved mainly in parallel to the oven door when they are actuated by the connecting element. 
   
   
       23 . A ventilation device according to  claim 18 , wherein the locking elements are upright standing locking plates supported in vertically or horizontally rotatable arrangement around a central axle. 
   
   
       24 . A ventilation device according to  claim 18 , wherein the locking elements are formed by at least two overlapping and reciprocally slideable facettes, wherein both facettes ideally expose a polygonal and point-symmetrical or nearly circular cross-section when partly opened. 
   
   
       25 . A ventilation device according to  claim 18 , wherein the locking elements are conical, with the tip pointing to the oven interior when built-in. 
   
   
       26 . A ventilation device according to  claim 25 , wherein the vent port has the same or a wider angle of aperture than the pertaining conical locking elements. 
   
   
       27 . A ventilation device according to  claim 25 , wherein the conical locking element can be moved in the longitudinal direction of the vent port, thereby exposing a circular ring gap when partly opened. 
   
   
       28 . A ventilation device according to  claim 18 , wherein the locking element is connected to the adjusting element such that when being in the end position and when the vent port has been completely closed, it is automatically released from the adjusting element. 
   
   
       29 . A method for supplying combustion air for the combustion of coking gas in cokemaking chambers of coke ovens built in flat-type construction and arranged as a battery of coke ovens, wherein at least one device according to  claim 18 , is implemented, wherein
 a) after discharging and recharging a cokemaking chamber said locking elements are moved into the starting position that represents the complete or nearly complete opening of said vent port, and wherein said locking elements are connected to the central adjusting element, and wherein subsequently   b) during the carbonisation time said locking elements are actuated by the central adjusting element(s) such that the vent ports are more and more closed, and wherein subsequently   c) the locking elements of a cokemaking chamber have attained their end position latest at the end of the carbonisation time of the relevant cokemaking chamber and are released from said adjusting element, and wherein   d) said method according to (a) is restarted again.   
   
   
       30 . A method according to  claim 29 , wherein after the complete closure of the vent port the release of said locking elements from the adjusting element is effected automatically. 
   
   
       31 . A method according to  claim 29 , wherein throughout the entire carbonisation time the central adjusting element is actuated continuously and mainly at the same medium speed or actuation frequency. 
   
   
       32 . A method according to  claim 29 , wherein at least one central adjusting element for the locking elements of primary air and at least one central adjusting element for the locking elements of secondary air are provided for. 
   
   
       33 . A method according to  claim 32 , wherein the central adjusting element for primary air and the central adjusting element for secondary air are actuated continuously throughout the entire carbonisation time and mainly at the same medium speed or actuation frequency.