Zero-discharge and self-heating charring process for activated carbon preparation

Abstract

The invention discloses a zero-discharge and self-heating charring process for activated carbon preparation, and the zero-discharge and self-heating charring process comprises the following steps: (1) heating a carbon powder raw material in a revolving drum of a charring furnace with a heating device, so that the carbon powder raw material generates flammable gas under heat action; (2) turning off the heating device; (3) introducing the gas generated in the step (1) into a combustion device for combustion to produce high-temperature flue gas; (4) introducing the generated high-temperature flue gas into the revolving drum for heating the carbon powder raw material to produce flammable gas; (5) introducing the gas generated in the step (4) into the combustion device for combustion to produce high-temperature flue gas; and (6) repeating steps (4) and (5). In the zero-discharge and self-heating charring process, the flammable gas generated during the charring process is introduced into the combustion device for combustion, and the high-temperature flue gas generated during the combustion process is introduced into the charring furnace to heat the carbon powder raw material for charring. Therefore, not only is the energy saved, but also a lot of flammable gases are prevented from being discharged into the atmosphere, and the environmental pollution is reduced.

Description

technical field [0001] The present invention relates to the carbonization of activated carbon, more specifically, the present invention relates to a zero-emission and self-heating carbonization process in the preparation of activated carbon. Background technique [0002] The carbonization process is one of the important processes in the process of producing activated carbon by the gas activation method. In this process, the raw materials are isolated from the air and heated to reduce the non-carbon elements to produce carbonaceous materials suitable for the activation process. It is the main preparation before activation. Base. Combustible gases such as CO and H are produced when materials are carbonized and decomposed 2 、CH 4 , Alkanes, olefins, coal tar and other volatile components, these gases will pollute the environment if they are directly discharged into the atmosphere. In addition, a large amount of energy is consumed when the material is carbonized. [0003] Ch...

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Problems solved by technology

Its discharge into the atmosphere not only causes environmental pollution, but also causes waste of resources

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