Method for preparing active carbon from cattle dung and sawdust

Abstract

The invention removes the impurities in cattle manure through cleaning and filtering; then after drying in an air dryer, the cattle manure is put into a combustion cell; with the addition of saw power, the proportion of the dried cattle manure and the saw power in the combustion cell is 1:0.11-0.052; the dried cattle manure and the saw power burn in the combustion cell for 7-8 days at the temperature of 300-400DGE C to obtain the activated carbon. During the manufacturing process, the invention mainly utilizes the saw power produced in the prior wood processing process and a large amount of cattle manure generated during cattle raising process as the raw material; the invention develops and produces activated carbon through recovery and secondary utilization, so that the activated carbon production process has the advantages of wide material selection range, convenience and low cost; and the invention also avoids the environmental pollution caused by waste saw power and cattle manure. At the same time, the combustion efficiency of cattle manure is almost the same as that of wood material; the invention also guarantees the production efficiency of activated carbon and reduces the production cost of activated carbon; the activated carbon prepared by cattle manure and saw power can be widely applied into air purification and water treatment etc industries.

Description

technical field [0001] The invention relates to a method for preparing activated carbon, in particular to a method for preparing activated carbon with cow dung and sawdust. Background technique [0002] Activated carbon is widely used in various fields of production and life, such as flue gas desulfurization and gas separation in industrial production, air purification and water treatment in daily life. In the past, the production methods of activated carbon were mainly divided into physical activation method and chemical activation method. The chemical activation method used chemical agents such as KOH as the activator, which seriously polluted the environment and was rarely used now; the physical activation method used wood Materials or coal-based materials are used as activated carbon raw materials, and activated carbon is produced under the activation of water vapor. The production process will not pollute the environment, and the cost is low, and it has been widely used...

AI Technical Summary

Problems solved by technology

However, in the physical activation method, the woody material used as the raw material of activated carbon is less and less available due to the over-exploitation of the forest and the slow regeneration process; and the coal-based material cannot meet the long-term use of human beings due to its non-renewability. needs