Process for producing activated carbon with castor bean shells

Abstract

The invention discloses a process for producing activated carbon with castor bean shells. The process includes: (1) cleaning the castor shells, subjecting the cleaned castor shells to coarse crushing with a pulverizer; (2) transferring carbon black into an activation furnace, performing activation at the temperature of 650-700 DEG C, and turning once every 15 minutes, operating for 2 hours, and paying attention to incomplete activation or activation time extension caused by excessively low temperature; (3) cooling the pure-black activated product, and washing the product in a wooden barrel; (4) adding 190Be industrial hydrochloric acid, feeding steam into the barrel with stirring, and controlling the temperature over 60 DEG C for immersion cleaning; (5) putting the product into a drying furnace when the moisture is lowered to below 15%; (6) sealing a containing furnace chamber, and performing drying at the temperature of 140 DEG C for 1-2 hours; (7) subjecting the obtained dried activated carbon to grinding with a ball mill quickly. The process has the advantages that the decolorized activated carbon is applicable to drug and food production, resources are saved, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of activated carbon, in particular to a process for producing activated carbon by using castor bean husks. Background technique [0002] Over the years, my country has made gratifying achievements in the comprehensive utilization of oil husks, but the utilization of castor bean husks has been neglected, and no reports have been seen. There are two reasons for this: ① the planting area of ​​castor is shrinking, and resources are insufficient; ② it is not good at extracting castor bean husk during oil extraction, so that it can be mixed into the cake. Considering the recycling of resources, it is a good choice to use castor bean husk for the preparation of activated carbon. Contents of the invention [0003] The object of the present invention is to provide a kind of technique that utilizes castor bean husk to produce activated carbon, to solve the problem that proposes in the above-mentioned background tec...

AI Technical Summary

Problems solved by technology

There are two reasons for this: ①The planting area of ​​castor is shrinking, and the resources are insufficient; ②It is not good at extracting castor bean husk during oil extraction, so that it can be mixed into the cake