Powered activated carbon physical method regeneration technology

Abstract

The invention discloses a powdered activated carbon physical method regeneration technology. The powdered activated carbon physical method regeneration technology comprises the following specific steps: (A) mixing used waste powered activated carbon (over dry), an organic bonding agent and pitch or strong cohesive coal powder according to the mass ratio of 100 to (1-3) to (5-10) to (35-50), adding water, and then mixing and kneading evenly into paste; (B) extruding the paste on a banded extruder into charcoal sticks with the diameters of 3-6mm; (C) putting the dried charcoal sticks in an activating furnace, and introducing vapor at the temperature of 700-850 DEG C to activate; and (E) crushing the activated charcoal sticks so as to obtain powdered activated carbon regeneration products. The powdered activated carbon physical method regeneration technology can be realized industrially and conveniently, and has the advantages of energy conservation, environmental friendliness, high efficiency and low cost.

Description

technical field [0001] The invention relates to a physical regeneration process of activated carbon, which is especially suitable for the regeneration of waste powder activated carbon. Background technique [0002] A large amount of powdered activated carbon is often used in the fields of petrochemical product production, pharmaceutical production, sugar liquid decolorization, etc. Due to the difficulty of regeneration, powdered activated carbon is often used for one-time use, and the activated carbon after use is disposed of as waste. In fact, these powdered activated carbons are mainly made of wood scraps, which are produced by chemical methods, and the production cost is very high. It is really wasteful to use them only once, and the waste carbon becomes hazardous waste, which causes the user's use cost to remain high. [0003] At present, there are many regeneration technologies for powdered activated carbon, such as thermal regeneration method, that is, by heating waste...

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Problems solved by technology

[0004] However, the energy consumption of the microwave heating regeneration method is too high, the equipment is not easy to solve, and because it is difficult to use steam reaction, the regeneration effect is not good, so it is difficult to apply in industry; the use of the rotary kiln direct thermal regeneration method has uneven heating of materials , and the activated air flow is easy to blow the carbon powder out, which brings danger and low efficiency; the eluent components used in the solution elution regeneration method will pollute the carbon, which is not conducive to the use of activated carbon, and the eluent is serious Pollutants, difficult to deal with at low cost

In view of the above reasons, the regeneration methods studied in the past are rarely used in industry, so it is urgent to study the physical regeneration process of waste powder activated carbon that can be actually used in industry.