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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Feb 08 , 2025

Advantages of continuous carbonization furnace

The continuous carbonization furnace is an efficient and environmentally friendly pyrolysis treatment equipment, designed for the carbonization treatment of biomass materials (such as wood, straw, coconut shell, rice husk, etc.) and organic waste. Its core principle is to decompose the organic components in the raw materials into high-quality biochar, combustible gas and a small amount of tar in a high-temperature oxygen-free or oxygen-limited environment, so as to achieve clean conversion and recycling of resources. Equipment structure and working principle The continuous carbonization furnace adopts a modular design, usually consisting of a feeding system, a preheating and drying section, a high-temperature carbonization section, a cooling and carbonization system and an exhaust gas treatment system. The raw materials enter the furnace body evenly through an automatic conveying device, and undergo dehydration and drying, pyrolysis carbonization and cooling and curing stages in turn. The carbonization temperature is usually controlled at 400-800℃. By accurately controlling the temperature and residence time, it can adapt to different raw material characteristics and ensure the stability of the carbonization product. Technical features Continuous production: Different from traditional intermittent carbonization furnaces, it can achieve 24-hour uninterrupted operation, and the raw materials are fully automated from feeding to finished carbon...

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Jan 10 , 2025

Columnar desulfurization and denitrification activated carbon

Columnar desulfurization and denitrification activated carbon is a new type of activated carbon with high strength, high ignition point, good air permeability, and high adsorption performance, and can be recycled many times. It is specially used for desulfurization and denitrification of coal-fired tail gas in large enterprises such as coal-fired boilers, steel mills, and thermal power plants. It not only has high desulfurization and denitrification efficiency, but also can partially remove organic pollutants, heavy metals and dust. The desulfurization process of desulfurization and denitrification activated carbon does not pollute water and does not produce other solid wastes. The removed SO2 gas can be processed into a variety of products.

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Dec 31 , 2024

Understanding Carbon Credits and Investment Opportunities in Carbon Trading

The international community agrees that we must reduce greenhouse gas emissions to combat climate change. Many countries have accepted that trading carbon credits is one of the effective ways to reduce emissions in the long term. But what are carbon credits and how do they work? This article will take you through the basic concepts of carbon credits and carbon trading. What are carbon credits? A carbon credit, also known as a carbon offset, is a permit that allows the holder to emit a certain amount of greenhouse gases. The main greenhouse gas is carbon dioxide, which is simply called “carbon”, but carbon credits cover all types of greenhouse gas emissions. One credit usually allows for the emission of one ton of carbon. There are two types of carbon emitters. A coal-fired power plant is a specific example of a direct emitter—and every business that uses that electricity is an indirect emitter. Even service businesses that may not appear to be direct emitters still contribute to carbon emissions, such as flying to a client meeting. Historically, carbon emissions were not measured and there was no cost to the emitter. However, by actively measuring carbon emissions, a cap-and-trade system can be...

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Dec 30 , 2024

What is special about activated carbon?

Activated carbon is often used for gas adsorption, separation and purification, solvent recovery, decolorization of sugar solution, oil, glycerin, and medicine, deodorant for drinking water and refrigerators, filter agent in gas masks, air purification, and can also be used as a catalyst or carrier of metal salt catalyst. So, why is activated carbon “alive” with so many functions? What is special about activated carbon? First of all, as a kind of charcoal, it is different from common charcoal. From the elemental composition and structure of the material, there is not much difference between activated carbon and charcoal. That is, they are both composed of carbon elements and are loose and porous. The difference between activated carbon and general charcoal is that activated carbon is looser and more “active” (adsorption capacity) than general charcoal. Activated carbon is made from charcoal, but the activated carbon made from general charcoal is not “active”. The “activity” of activated carbon is reflected in its strong adsorption capacity. Activated carbon has many nanometer-level tiny pores. The surface area of ​​one gram of activated carbon can even exceed 3,000 square meters, while the surface area of ​​one gram of unactivated charcoal is only 2.0-5.0 square meters. Activated...

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Dec 25 , 2024

Activated carbon carbonization process conditions

Carbonization should be heated and distilled under the condition of air isolation, but in actual production, due to the negative pressure in the carbonization furnace, the production system cannot be absolutely strict, which leads to the need for some air to be brought into the carbonization system, causing the combustion of the carbonized material in the furnace, and even the extraction of materials to block the equipment pipeline. According to experience, the negative pressure in the carbonization furnace should be controlled between 30~100Pa. The most important factors in the carbonization process are the final carbonization temperature and the carbonization heating rate. In the actual production process, the carbonization heating rate is generally 8℃/min for coarse particles with a particle size of 5.0~7.0mm; 10℃/min for medium materials with a particle size of 3.0~5.0mm; and 12℃/min for particles less than 3.0mm. Carbonization is one of the important processes in the production of activated carbon. The quality of carbonization directly affects the next step of activation and the quality of the final product. Carbonization of molding materials refers to the process of volatilization of low molecular weight substances in coal tar and thermal decomposition and solidification of coal and asphalt in materials under...

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