Method and apparatus for manufacturing cokes additive

Abstract

Provided is a method and apparatus for manufacturing a cokes additive, which is optimized for extraction of a cokes additive and can easily and effectively manufacture the additive, the method comprising: a coal pre-processing step for bringing coal into slurry by dispersing the coal in a solvent; a step for introducing a dispersed iron catalyst while pre-processing the coal; a coal liquefying step for liquefying the coal slurry by reacting the coal slurry with a cracking gas; a step for supplying a COG and/or an LNG as the cracking gas in the coal liquefying step; a separation step for separating an additive from the liquefied product; and a recycling step for supplying liquid oil obtained in the separation step to the coal pre-processing step and using the liquid oil as the solvent.

1 . A method of manufacturing a coke additive, the method comprising:
 a coal pre-processing step of dispersing the coal in a solvent to form a slurry;   a step of introducing a dispersed iron catalyst while pre-processing the coal;   a coal liquefying step of liquefying the coal slurry by reacting the coal slurry with a cracking gas;   a step of supplying coke oven gas (COG) and/or liquefied natural gas (LNG) as a cracking gas in the coal liquefying step;   a step of separating an additive from a liquefied product; and   a recycling step of supplying liquid oil obtained in the separation step to the coal pre-processing step and using the liquid oil as the solvent.   
     
     
         2 . The method of  claim 1 , wherein in the coal pre-processing step, dried coal and the solvent are mixed in a weight ratio of 1/1 to 1/4. 
     
     
         3 . The method of  claim 2 , wherein the dispersed iron catalyst is Fe 2 O 3 . 
     
     
         4 . The method of  claim 3 , wherein 0.5 to 3.0 parts by weight of the dispersed iron catalyst is injected for 100 parts by weight of the coal. 
     
     
         5 . The method of  claim 1 , wherein the separation process comprises a separating step that separates a gas component from a liquefied product, a filtration step that separates a liquid material and a solid material, and a fractional distillation step that separates an additive by distilling the separated liquid material in the filtration step, and
 in the recycling step, the additive and separated oil in the fractional distillation step are supplied to the coal pre-processing step.   
     
     
         6 . The method of  claim 5 , wherein the filtration step is performed at a temperature of 120 to 400° C. 
     
     
         7 . The method of  claim 6 , wherein the fractional distillation step is performed at a temperature of 200 to 350° C. 
     
     
         8 . The method of  claim 7 , wherein the coal pre-processing step further comprises a step of crushing the coal and a step of drying the crushed coal. 
     
     
         9 . The method of  claim 8 , wherein in the coal drying step, the coal is dried to have a moisture content of 20 wt % or less. 
     
     
         10 . The method of  claim 7 , wherein the coal liquefying step is performed at a temperature of 250 to 450° C. and a pressure of 30 to 120 bar. 
     
     
         11 . The method of  claim 10 , wherein in the coal liquefying step, the cracking gas is supplied and heated at a temperature of 300 to 600° C. 
     
     
         12 . A coke additive manufacturing apparatus, comprising:
 a mixing drum in which pre-processed coal and a solvent are mixed to form a slurry;   a catalyst supply unit that supplies a dispersed catalyst to the mixing drum;   a reactor that liquefies a coal slurry that passes through the mixing drum;   a gas supply unit that supplies a cracking gas to the reactor;   a separation unit that separates an additive from a liquefied product that is generated in the reactor; and   a supply line that is connected between the separation unit and the mixing drum to supply oil that is separated in the separation unit as a solvent to the mixing drum.   
     
     
         13 . The coke additive manufacturing apparatus of  claim 12 , wherein the separation unit comprises: a separator that separates a gas component in a liquefying process product, a filter device that is connected with the separator to separate a liquid material and a solid material, and a distiller that separates an additive by distilling a liquid material that is separated in the filter device and that is connected with the mixing drum through the supply line to supply the additive and separated oil to the mixing drum. 
     
     
         14 . The coke additive manufacturing apparatus of  claim 13 , wherein the manufacturing apparatus further comprises a crusher that crushes coal for coal pre-processing and a dryer that dries the crushed coal. 
     
     
         15 . The coke additive manufacturing apparatus of  claim 12 , wherein the catalyst supply unit supplies a dispersed iron catalyst. 
     
     
         16 . The coke additive manufacturing apparatus of  claim 15 , wherein the gas supply unit supplies coke oven gas (COG) and/or liquefied natural gas (LNG).