Process for dry cooling of coke with steam with subsequent use of the synthesis gas produced

Abstract

A method for the dry quenching of coke using steam with subsequent use of the synthesis gas generated, the method involving the cyclic coking of coal to coke with the coke being sent to a quenching device after being discharged from the coke oven and steam being introduced into the quenching device for dry quenching, thus creating synthesis gas made up of carbon monoxide (CO) and hydrogen (H 2 ) via a water-gas reaction, and the synthesis gas produced being fed to a further application. This method allows the heat generated during coking to be used for the production of useful synthesis gas which, in turn, can be used for a further purpose or in the heating process, thus on the whole achieving an extremely even energy balance throughout the entire process.

1 . Method for the dry quenching of coke in which
 coal is heated in a coke oven via heating by means of a high calorific gas and coke is obtained via cyclic coking, said coke being pushed out into a coke quenching car on completion of the coking, and   the incandescent coke is transported to a coke quenching device in a coke quenching car in which said incandescent coke is quenched to a temperature below the kindling temperature by means of a quenching gas,   wherein   gaseous steam (H2O) is used as the quenching gas under the exclusion of air, said steam reacting at least partially with the incandescent coke according to the water-gas reaction to form synthesis gas made up of hydrogen (H2) and carbon monoxide (CO), and   due to the dry quenching being carried out in a coke quenching device the hydrogenous quenching gas obtained is collected, and   the gas mixture thus obtained is used for a further purpose.   
     
     
         2 . Method for the dry quenching of coke according to  claim 1 , wherein use for a further purpose relates to the gas mixture being added to the fuel gas of the coke oven(s). 
     
     
         3 . Method for the dry quenching of coke according to  claim 2 , wherein a hydrocarbonaceous fuel gas is mixed with the synthesis gas used to heat the coke oven before it is added to the coke oven. 
     
     
         4 . Method for the dry quenching of coke according to  claim 3 , wherein the fuel gas is natural gas. 
     
     
         5 . Method for the dry quenching of coke according to  claim 3 , wherein the fuel gas is coke oven gas. 
     
     
         6 . Method for the dry quenching of coke according to  claim 1 , wherein the synthesis gas is subjected to a heat recovery process before being used for a further purpose. 
     
     
         7 . Method for the dry quenching of coke according to  claim 6 , wherein steam is generated during the heat recovery process. 
     
     
         8 . Method for the dry quenching of coke according to  claim 1 , wherein use for a further purpose relates to conversion of the carbon monoxide (CO) contained in the gas mixture using steam (H2O), said carbon monoxide (CO) being converted to carbon dioxide (CO2). 
     
     
         9 . Method for the dry quenching of coke according to  claim 8 , wherein use for a further purpose relates to conversion of the carbon monoxide (CO) using steam (H2O) and subsequent purification of the hydrogen (H2) obtained in a pressure-swing adsorption unit. 
     
     
         10 . Method for the dry quenching of coke according to  claim 1 , wherein the steam for quenching is split into at least two part streams, with one part stream of the steam being fed into the coke quenching device from below in a vertically upward flow direction and a further part stream of the steam being fed into a part of the coke quenching device in which the coke to be quenched has a temperature of 500 to 900° C. 
     
     
         11 . Method for the dry quenching of coke according to  claim 1 , wherein the coke quenching device is a coke quenching shaft. 
     
     
         12 . Method for the dry quenching of coke according to  claim 1 , wherein the coke quenching device is a coke quenching chamber. 
     
     
         13 . Method for the dry quenching of coke according to  claim 12 , wherein the coke quenching chamber is equipped with an antechamber.