Jun 04 , 2025

Detailed explanation of activated carbon regeneration technology!

Activated carbon regeneration technology Activated carbon adsorption characteristics The biggest feature of activated carbon is its rich pore structure. There are countless tiny pores on the surface of activated carbon. The diameter distribution range of these micropores is very wide, ranging from less than one nanometer to thousands of nanometers. They can be divided into three categories: macropores (d>50nm), mesopores (2nm<d<50nm) and micropores (d<2nm). Therefore, activated carbon has a huge specific surface area, and the surface area of ​​each gram of activated carbon can reach 1000m². The pore characteristics are most related to the physical adsorption properties of activated carbon. The size, shape and distribution of the pores contained in activated carbon will affect the physical adsorption of activated carbon. Activated carbon also has a wealth of surface chemical groups, which are divided into three types: acidic, alkaline and neutral, which are mainly related to the chemical adsorption of activated carbon. Internal pore structure of activated carbon Due to the rich pore structure, huge specific surface area and rich surface chemical groups, activated carbon has a high adsorption capacity. In order to improve the adsorption efficiency of activated carbon, additional modification processes can be carried out, such as sulfidation, halogenation,...

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May 19 , 2025

What is Biochar？

Biochar is a form of charcoal produced through the incomplete combustion process (pyrolysis) of natural organic fuels such as forest and agricultural waste, urban garbage or livestock manure under low or no oxygen. Existing literature has confirmed that biochar can provide a considerable proportion of soil organic carbon, effectively improve degraded land, and reduce the application of soil heavy metals (copper, zinc), organic pollutants and pesticides. In addition to being a renewable energy source, the synthesis gas produced during the production of biochar can also be converted into heat and energy. Previous studies have shown that biochar combined with soil can promote plant growth and increase crop yields. The advantages provided by biochar include: (1) Increase beneficial biomass in the soil, (2) Increase plant’s ability to absorb soil phosphorus (3) Enhance cation exchange capacity, (4) Provide long-term and stable carbon storage, (5) Improve the limitation of plant root penetration, (6) Reduce the emission of nitrous oxide (N2O), (7) Promote plant nitrogen fixation, (8) Reduce pesticides Application amount and (9) Regulate soil pH. In addition to improving land use efficiency, biochar’s impact on mitigating greenhouse gas emissions has also attracted much attention. In order to reduce carbon dioxide emissions caused by...

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Apr 28 , 2025

Introduction to the production process and application of activated carbon kiln

Activated carbon kiln is a special equipment for producing activated carbon. It converts carbon-containing raw materials (such as wood, coconut shells, coal, etc.) into activated carbon with high adsorption performance through high-temperature pyrolysis and activation processes. The following is a detailed introduction to activated carbon kilns: 1. Types of activated carbon kilns According to different processes and structures, activated carbon kilns are mainly divided into the following categories: Slot Furnace Using gas activation method (such as water vapor or carbon dioxide) to activate raw materials through high temperature (800-1000℃). Divided into multiple heating zones, suitable for continuous production, low energy consumption. Rotary Kiln The raw materials are heated evenly through rotation, suitable for large-scale production, and can handle granular or powdered raw materials. Commonly used for physical activation (introducing activation gas after high-temperature carbonization). Vertical Furnace Compact structure, suitable for small-scale or intermittent production, commonly used chemical activation method (such as phosphoric acid, zinc chloride, etc.). Fluidized Bed Furnace The raw materials are suspended in the air flow, and the activation efficiency is high, but the equipment is complex and suitable for high value-added products. 2. Production process Raw material pretreatment Raw materials are crushed and screened to the appropriate...

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Apr 11 , 2025

Carbonization furnace is an important equipment for producing machine-made charcoal

The carbonization of machine-made charcoal has always been inseparable from the carbonization furnace. The hot sales of new energy have made carbonization furnaces very popular in the market, and many users choose to invest in carbonization furnaces to produce machine-made charcoal. So what is the principle of carbonization furnace production? What is the carbonization effect? Carbonization furnace is a device that makes charcoal powder from wood chips, wheat straw, rice husks, sawdust, peanut shells, walnut shells, hawthorn seeds, jujube kernels, coconut shells, palm shells, coffee grounds, bark branches, corn cobs and other lignin-containing materials. First, the above materials are crushed into particles less than 1 cm, and then the carbonization furnace is used for high-temperature dry distillation, oxygen-free carbonization and environmentally friendly charcoal-making machinery with high carbonization rate. Carbonization furnace plays a vital role in the production of machine-made charcoal. Without the carbonization furnace to carbonize these biomass raw materials, there will be no machine-made charcoal. It can be seen that only after the carbonization of the carbonization furnace can machine-made charcoal be produced. Xuye Mechanical Carbonization Furnace Manufacturing uses excellent stainless steel plates and high-temperature refractory materials, and designs an inner cylinder + outer cylinder double drum structure. The...

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Mar 04 , 2025

Comparison of internal and external heating furnaces in activated carbon production line

In the activated carbon production line, the main differences between the internal heat activation furnace and the external heat activation furnace are reflected in the heating method, thermal efficiency, temperature control, application scenarios, etc. The following is a specific comparison: 1. Heating Method Internal Heating Activation Furnace Direct Heating: The heat source (e.g., gas, steam, or flue gas) directly contacts the material. Combustion-generated heat and activation gases (e.g., steam, CO₂) act simultaneously on the carbonized feedstock. Heat Source Location: Heat is released inside the furnace via combustion chambers or high-temperature steam injection. External Heating Activation Furnace Indirect Heating: The heat source (e.g., gas, electric heating elements) burns outside the furnace wall or in a jacket, transferring heat through the wall to the material. Heat Source Location: Combustion chambers or heating devices are located outside the furnace, physically isolating the material from the heat source. 2. Thermal Efficiency and Energy Consumption Internal Heating High Thermal Efficiency: Direct heat transfer enables rapid heating and lower energy consumption (typically 20%~30% more efficient than external heating). Drawback: Some heat may escape with exhaust gases, requiring optimized gas circulation. External Heating Lower Thermal Efficiency: Heat loss occurs through furnace walls, resulting in higher energy consumption. Advantage: Exhaust...

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Feb 10 , 2025

Raw Materials Suitable for Activated Carbon Production

The selection of raw materials for activated carbon production is diverse. Common categories include: 1. Wood-Based Materials Wood: Pine, fir, birch, etc. Sawdust: Byproducts from wood processing. Fruit Shells: Coconut shells, walnut shells, apricot shells, etc. 2. Coal-Based Materials Anthracite: High carbon content, suitable for producing high-hardness activated carbon. Bituminous Coal: High carbon content, ideal for activated carbon with strong adsorption performance. Lignite: Lower carbon content but offers good pore structure. 3. Mineral-Based Materials Asphalt: Derived from petroleum or coal tar, used for high-performance activated carbon. Petroleum Coke: A byproduct of petroleum refining, suitable for high-purity activated carbon. 4. Other Materials Bamboo: Bamboo and its processing byproducts. Crop Straws: Agricultural residues like rice straw, wheat straw, etc. Waste Tires: Rubber components can be converted into activated carbon. 5. Recycled Materials Used Activated Carbon: Can be regenerated and reused. Selection Criteria Carbon Content: Higher carbon content is preferable. Ash Content: Low ash content improves activated carbon quality. Pore Structure: A well-developed porous structure enhances adsorption capacity. Cost: Raw material costs impact overall production expenses. Summary Wood-based, coal-based, mineral-based, and other materials can all be used for activated carbon production. The specific choice depends on product requirements, performance goals, and cost considerations.

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