Device for preparing super-capacitor activated carbon by alkali activation method and preparation method thereof

Abstract

The invention discloses a device for preparing super-capacitor activated carbon by an alkali activation method and a preparation method of the super-capacitor activated carbon. A preparation method ofsuper-capacitor activated carbon belongs to the technical field of super-capacitor carbon preparation, and comprises the following steps: uniformly mixing a carbonized material and an activator, adding into a feeding unit, reacting in a furnace body, conveying through a driving unit to obtain an activated material, washing and drying the activated material to obtain the super-capacitor activatedcarbon. The invention has the following advantages: 1, the wedge-shaped paddle stirring shaft in the furnace body can make the carbonized material and the activator mixed more uniformly, thereby ensuring the batch stability of the product; 2, the relative movement of the material particles in the furnace body and the wedge-shaped surface generates a washing effect, materials attached to the wedge-shaped surface can be washed off, and the wedge-shaped blades have a self-cleaning function, so that the materials are prevented from being adhered to the stirring shaft of the wedge-shaped blades, the materials are prevented from being adhered to the furnace wall, normal discharge in the activation process is ensured, and continuous production of activation is realized.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor carbon preparation, and in particular relates to a device for preparing supercapacitor activated carbon by an alkali activation method and a preparation method thereof. Background technique [0002] Supercapacitor activated carbon has high specific surface area, rich pore volume, stable physical and chemical properties, high heat resistance and acid-base performance, and is widely used in supercapacitors, lead-carbon batteries, hydrogen storage, medical treatment, military industry, railway systems , power systems and other fields. [0003] At present, the process of preparing activated carbon for supercapacitor mainly adopts alkali activation method. In the industrial production process, during the heating reaction process of the mixture of KOH and carbon-containing raw materials, as the temperature rises, KOH melts, and the mixture will adhere to the reactor wall, which is not conducive ...

AI Technical Summary

Problems solved by technology

In the industrial production process, during the heating reaction process of the mixture of KOH and carbon-containing raw materials, as the temperature rises, KOH melts, and the mixture will adhere to the reactor wall, which is not conducive to the activation.

For example, Wang Dazhi (Patent Publication No.: CN108163855A) melts the activator in equipment outside the activation furnace, puts in carbonized material after melting, mixes and heats it until it starts to solidify, and then transfers it to the activation furnace to activate and prepare activated carbon for supercapacitors. To a certain extent, the problem of sticking to the wall has been solved, but due to the two-stage structural design, it is difficult to achieve continuous operation, and the activator severely corrodes the equipment; for example, Huang Yong (patent publication number: CN107892298A) mixed activated carbon raw materials with strong alkali Finally, under the protection of inert gas, heat to 300~500°C for 2-4 hours to obtain pretreated activated carbon, continue to heat to 700~900°C, pass in the mixed gas of water vapor and carbon dioxide, and heat for 1-2 hours to obtain activation Activated carbon, this method uses staged heating, the process is complex and time-consuming; water vapor and carbon dioxide are introduced during the activation process, and the water vapor will react with the potassium in the activation process, which is prone to micro-explosion, posing a safety hazard, and carbon dioxide will react with alkali metal activators React to produce potassium carbonate, increase the amount of activator

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