Active carbon of produced by concentration carbonization papermaking pulping black liquor

Abstract

A process for preparing activated carbon from block paper-making liquid by concentrating and charring includes such steps as evaporating for concentrating, charring at 500-800 deg.C for 10-90 min to obtain alkali contained coke, immersing in hot water, eluting, filtering and drying.

Description

(1) Technical field: [0001] The patent of the present invention relates to a production method of activated carbon, especially a method for producing activated carbon by using papermaking pulping black liquor as raw material through concentration and carbonization. (two) background technology: [0002] Activated carbon is a black porous particle made of wood, sawdust, fruit shell, coal and other raw materials through the process of carbonization and activation. It is composed of microcrystalline carbon and amorphous carbon. Activated carbon is one of the oldest and most important industrial adsorbents. Its biggest feature is its developed pore structure and huge specific surface area (500-3000m 2 / g), due to its unique pore structure and surface functional groups (such as carboxyl, carbonyl, hydroxyl, lactone, etc.), it has a strong adsorption capacity for gases, organic or inorganic substances in solution, and colloidal particles. Activated carbon has Sufficient chemical s...

AI Technical Summary

Problems solved by technology

However, due to the high technical requirements for the production of activated carbon from coal and asphalt, the production of activated carbon in my country is still dominated by wood, sawdust and wood scraps, and the development of activated carbon is limited by wood resources to a certain extent.

Images