Method for preparing activated carbon by pyrolysis of organic matters

Abstract

The invention relates to a method for preparing activated carbon by pyrolysis of organic matters, comprising a pyrolyzing device, a reforming device, a drying device, a purifying device, a gas storage device and a high-temperature heat-storage combustion device, wherein pyrolysis reaction is carried out on organic matters by the pyrolyzing device so as to generate combustible gas, tar and coke, the combustible gas enters the drying device after passing through the reforming device so as to dry the organic matters, a part of the purified combustible gas combusts in the direction of a combustion passage of the high-temperature heat-storage burning device so as to generate combustion heat, and simultaneously, the other part of the combustible gas exchanges heat by the heat-storage combustiondevice in the direction of a heat-exchange passage, and then enters the pyrolyzing device for pyrolysis and activation reaction as pyrolyzing and activating medium. In the process of pyrolysis, the coke forms the activated carbon by activation of the combustible gas. The combustible gas generated by pyrolysis is dried by the drying device, and then sensible heat in the gas is fully released; a part of the combustible gas combusts to release heat as the energy source needed in the process of pyrolysis, and the combustible gas is a pyrolysis medium, and is also an activating agent in the process that the coke generates the activated carbon.

Description

technical field [0001] The invention belongs to the technical field of pyrolysis of organic matter and activated carbon, and relates to a method for preparing activated carbon by pyrolysis of organic matter. In particular, it relates to the method of pyrolysis and activated carbon preparation using organic matter, including organic solid waste, biomass, coal, urban sludge, oily sludge, plastics, rubber, organic waste and its derivatives. Background technique [0002] There are many types of organic matter and the yield is huge. Pyrolysis is an effective method for recycling organic matter. Combustible gas, tar, coke and other products can be obtained by pyrolysis of organic matter. Combustible gas and tar contain high calorific value, and coke can be activated to form activated carbon. Activated carbon is a product with high economic value, which is widely used in various industrial processes and daily life. [0003] The process of pyrolyzing organic matter requires a la...

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Problems solved by technology

[0006] The invention aims at the problem of high energy consumption in the pyrolysis process of organic matter and the preparation process of activated carbon, and provides a method of using combustible gas produced by pyrolysis reaction of organic matter to provide energy for the pyrolysis process and

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