System, device and method for preparing active carbon

Abstract

The invention relates to a system, a device and a method for preparing active carbon, which improve the recovery rate of the active carbon. The invention adopts the technical scheme that the system comprises a pyrolysis treatment subsystem for carrying out pyrolysis treatment on pretreated materials and an active carbon finishing system for further sorting and dewatering a primary active carbon product; in the system, a carbonization and activation integrated furnace of microwave heating and hermetic low-temperature pyrolysis processes is used as main equipment of the pyrolysis treatment subsystem; materials are cracked in a pyrolysis furnace chamber, and carbonized solid residues after cracking enter an activation chamber and processed into a primary active carbon product; and then the primary active carbon product is turned into an active carbon finishing subsystem, a carbonization and activation integrated furnace atmosphere guaranteeing system matched with the pyrolysis treatment subsystem and a gaseous product recycling system. The invention sufficiently utilizes products and energy in the process of production and has compact operation process and strong reliability.

Description

technical field [0001] The invention relates to a preparation process of activated carbon, in particular to a system, device and method for preparing activated carbon. Background technique [0002] Activated carbon is an excellent adsorption material with large surface area, strong adsorption capacity, environmental protection, and non-toxicity. It is widely used in air purification, deodorization, anticorrosion, water treatment, solution decolorization, chemical catalysis, chemical analysis and other fields. The emergence of activated carbon makes it more convenient to play its adsorption and filtration functions in daily life, medical and health, industry and other fields. [0003] In the internationally accepted activated carbon production process, two methods of chemical activation and physical activation are usually used for the production of activated carbon. In the process of preparing activated carbon by the chemical activation method, a large amount of acid-contain...

AI Technical Summary

Problems solved by technology

[0004] There are several problems in the preparation of activated carbon by the existing physical activation method, (1) high energy consumption, because activated carbon is completely provided by high-quality coal combustion in the carbonization process, and is affected by factors such as incomplete combustion, slagging and exhaust, and the additional energy 30-35% of the energy absorbed for the reaction process

(2) During the carbonization process, due to the constraints of factors such as uneven heating and complex heating process, a large amount of liquid products such as tar and wood acetic acid are produced, resulting in a low recovery rate of solid carbon, generally less than 60%.

[0005] In the current process of preparing activated carbon, the carbonization and activation processes are carried out in independent devices, and in the preparation process, gas products and a large amount of heat energy resources cannot be fully utilized, resulting in a great waste of resources

Images