Method for producing coal-based shaped activated carbon containing no binder

摘要

A method for producing coal-based molded activated carbon, comprising the steps of obtaining molded charcoal from raw coal through a molding step, and performing steps of carbonization and activation after crushing and granulating molded charcoal to obtain activated carbon. Provide a manufacturing method. The forming step is a pulverized coal with an average particle diameter of 20 μm or more by pulverizing the raw coal, and the content of the pulverized coal with a particle diameter of 80 μm or less is 90 wt% or more and the content of a pulverized coal with a particle diameter of 40 μm to 80 μm is 10 wt% Step a for obtaining pulverized coal and the pulverized coal are supplied into the supply hopper of the forming apparatus, and the material in the supply hopper is defoamed, and the temperature of the material in the supply hopper is 50 ° C. C., step c of adjusting water content to 2 wt% to 8 wt%, and step d of feeding the material in a feed hopper to the forming apparatus to perform forming to obtain formed coal. The raw coal molding process of this production method has a broad application range of coal, and even when using non-caking coal which is the most difficult to mold as the raw coal, a formed carbon having a strength of over 89% without requiring any binder. A product can be obtained, which is suitable for improving the quality of activated carbon such as strength.