Method for operating a coke oven arrangement

Abstract

The invention pertains to a method for operating a coke furnace arrangement, wherein the coke oven gas accumulated during the coking process is utilized as a working gas. According to the invention, a synthesis gas produced from fossil fuel, preferably coal, by means of a gasification process is supplied as fuel gas in order to provide at least part of the thermal energy required for the coking process.

1 . A method for operating a coke furnace arrangement, wherein the coke oven gas accumulated during the coking process is utilized as a working gas, wherein hydrogen is extracted from the coke oven gas, and wherein a synthesis gas produced from fossil fuel by means of a gasification process is supplied as fuel gas in order to provide at least part of the thermal energy required for the coking process,
 wherein a first portion of the synthesis gas being produced is utilized as fuel gas, and wherein another portion of the synthesis gas being produced is used for an additional synthesis with the hydrogen extracted from the coke oven gas.   
     
     
         2 . The method according to  claim 1 , wherein coal is used as fossil fuel. 
     
     
         3 . The method according to  claim 1 , wherein the coke oven gas is compressed and desulfurized before hydrogen is extracted therefrom and hydrocarbons are subsequently separated from residual gas components. 
     
     
         4 . The method according to  claim 1 , wherein hydrogen is extracted from the coke oven gas by means of pressure swing adsorption, wherein hydrocarbons are subsequently extracted by means of a low-temperature distillation. 
     
     
         5 . (canceled) 
     
     
         6 . The method according to  claim 1 , wherein a first portion of the synthesis gas being produced is used as fuel gas, and wherein another portion of the synthesis gas being produced is subjected to a CO-conversion. 
     
     
         7 . The method according to  claim 6 , wherein the CO-conversion is carried out with the addition of water vapor, wherein carbon dioxide is at least partially removed after a desulfurization of the converted synthesis gas, wherein the remaining gas flow is subsequently subjected to a pressure swing adsorption in order to remove hydrogen, and wherein the off-gas that is depleted of hydrogen and accumulates during this process is used as fuel gas for the coking process. 
     
     
         8 . The method according to  claim 1 , wherein a first portion of the synthesis gas being produced is used as fuel gas, and wherein another portion of the synthesis gas being produced is used for generating power in a combined gas and steam turbine plant. 
     
     
         9 . The method according to  claim 1 , wherein another heating gas is supplied in addition to the synthesis gas in order to provide the thermal energy required for the coking process. 
     
     
         10 . The method according to  claim 1 , wherein another portion of the synthesis gas being produced is supplied to a blast furnace in order to be thermally utilized.