Factory Price Charcoal Activated Carbon furnace Activated Biochar Charcoal Wood Kiln

Activated carbon is a specially treated carbon that heats organic raw materials (nut shells, coal, wood, etc.) to reduce non-carbon components without air (this process is called carbonization), then reacts with the gas and the surface is covered with air . Erosion, creating a microporous structure (this process is called activation). Since the activation process is a microscopic process, that is, the surface erosion of a large number of molecular carbides is point erosion, there are countless tiny pores on the surface of activated carbon. Most micropores on the surface of activated carbon have diameters between 2 and 50 nm. Even a small amount of activated carbon has a huge surface area. The surface area of activated carbon per gram is 500 to 1500 square meters. Almost all activated carbon applications are based on this characteristic of activated carbon.

Activated carbon is divided into coconut shell activated carbon, fruit shell activated carbon, wood activated carbon and coal activated carbon in terms of raw materials.
Activated carbon is divided into powdered activated carbon, granular activated carbon and special-shaped activated carbon based on the shape of the finished product.

The first process includes dehydration and carbonization. The raw materials are heated, dried at a temperature of 170 to 600°C, and approximately 80% of the original organic matter is carbonized. The second process is to activate the char. This is accomplished by reacting with charcoal using an activator such as water vapor. In the endothermic reaction, a mixed gas composed of CO and H2 is mainly produced, which is used to burn and heat the char to the appropriate temperature (800°C). to 1000℃) to burn out all decomposable substances, resulting in a developed microporous structure and huge specific surface area, thus having strong adsorption capacity

The material goes through the following stages in the carbonization furnace.
(1) Drying stage (≤ 160 ℃): water evaporates and the main components of the material remain unchanged.
(2) Pyrolysis 1 (160-260 °C): Most of the hemicellulose and part of the cellulose and lignin are decomposed, and the hemicellulose is decomposed to produce wood acid, carbon dioxide and water.
(3) Pyrolysis 2 (260-310 °C): Mainly cellulose decomposition, and the solid product of hemicellulose decomposition residue is further aromatic.
(4) Carbonization (310-450 °C): Mainly the thermal decomposition of lignin, the gradual reduction of wood vinegar, and the emission of large amounts of wood gas.
(5) Calcination stage (>450 °C): As the temperature increases, carbonyl groups, carboxyl groups, hydroxyl groups, methyl groups, etc.
Separation and condensation, polycyclic aromatization further proceeds, and the amount of hydrogen generated gradually increases.
Above 500 °C, therefore mainly hydrogen is produced. The calcination stage relies on external heat to volatilize volatiles. stay in charcoal

The activation furnace goes through the following stages.
(1) Heating stage (≤ 700 °C): The material continues to be heated, and the carbon is calcined at high temperature to volatilize the remaining volatile substances to generate flammable gases such as H2, CO, CH4, and CO2.
(2) Activation stage (700-900 °C): Use water vapor and CO2 and other gases generated by the oxidation reaction in the calcination stage to open the micropores of the carbon, and
Vaporizes carbon blocked in carbon pores, thereby improving adsorption performance. The residence time in the activation phase is approximately 120-180 minutes.
The reaction principle is as follows: C + H2O → CO + H2 CO + H2O → CO2 + H2 C + CO2 → 2CO.

Application scope

Notice:
1.Big machines packed in nude or shipping in containers.
2. Spare parts packed in wooden case.
3. If you have any special requirement, we will pack as request.