Activated Carbon, Columnar Activated Carbon, Exhaust Gas Treatment Activated Carbon, Zhencheng Columnar Activated Carbon, 4.0mm Columnar Activated Car

Columnar activated carbon is a cylindrical adsorbent material made from high-quality raw materials through special processes. With its well-developed pore structure, excellent adsorption performance, stable physical and chemical properties, and convenient usage, it is widely used in various fields such as environmental protection, chemical industry, food, and medicine. It is one of the most commonly used high-efficiency purification materials in current industrial and civil fields. This document will provide a comprehensive and detailed elaboration on aspects including basic product information, application characteristics, specification parameters, quality standards, multi-dimensional image display, usage instructions, and precautions, offering professional references for product selection, usage, and acceptance.

I. Basic Product Information

1.1 Product Definition

Columnar Activated Carbon, also known as columnar carbon, is refined through multiple processes such as crushing, mixing, extrusion molding, carbonization, and activation, using anthracite, wood, coconut shell, etc. as raw materials. It appears as black cylindrical particles, with no odor or toxicity. It features a large specific surface area, well-developed pore structure, high mechanical strength, large adsorption capacity, and good regeneration performance. It can specifically adsorb various harmful substances in gases and liquids, achieving functions such as purification, decolorization, and purification.

1.2 Core Raw Materials and Production Process
1.2.1 Core Raw Materials
The selection of raw materials for granular activated carbon directly determines the performance of the product. Currently, the mainstream raw materials are divided into three categories. The characteristics of each type of raw material and their applicable scenarios are as follows:
Coal-based raw materials: With high-quality anthracite as the core, they have outstanding cost performance, high mechanical strength, and good wear resistance. They are suitable for scenarios with high strength requirements such as industrial wastewater treatment and waste gas treatment, and are currently the most widely used raw material type in the industrial field.

Wood-based raw materials: Made from forestry processing residues such as sawdust and branches, they have low ash content, excellent adsorption performance, and uniform pore distribution. They are suitable for scenarios with high purity requirements such as food decolorization, pharmaceutical purification, and drinking water purification.

Coconut shell-based raw materials: Made from high-quality coconut shells, they have the largest specific surface area, the strongest adsorption capacity, and the best performance, but the cost is relatively high. They are suitable for high-end scenarios such as high-end purification, solvent recovery, and precious metal recovery.
1.2.2 Production Process

The product production strictly follows standardized procedures to ensure stable performance. The core processes are as follows: raw material screening → crushing and grinding (over 95% passing through 180 mesh) → mixing and kneading (adding environmentally friendly binders to avoid pore blockage) → extrusion molding (forming uniform cylindrical particles) → low-temperature carbonization (removing moisture and volatile components from raw materials to form initial pores) → high-temperature activation (using steam activation method to further expand the pore structure and improve adsorption performance) → cooling and screening (removing broken particles and impurities) → finished product inspection → packaging and storage. Some high-end products will additionally undergo pickling and impregnation treatments to specifically enhance the adsorption capacity for specific pollutants such as heavy metals and VOCs.

II. Characteristics of Product Uses

The core advantages of granular activated carbon are "high-efficiency adsorption, stable and durable performance, and wide adaptability". Its uses cover two major fields: gas-phase adsorption and liquid-phase adsorption. The characteristics of its uses in different scenarios have their own focuses, which are as follows:

2.1 Applications and Characteristics of Gas-Phase Adsorption

It is mainly used to adsorb harmful components, odors, and impurities in gases, and is suitable for scenarios such as industrial waste gas treatment, indoor air purification, and flue gas treatment. Its core characteristics are fast adsorption speed, low wind resistance, and resistance to pulverization.

Industrial waste gas treatment: For VOCs (benzene, toluene, xylene, acetone, etc.), odorous gases (hydrogen sulfide, ammonia), and toxic gases (SO₂, H₂S) generated in industries such as spraying, printing, chemical engineering, and pharmaceuticals, the adsorption removal rate can reach over 90%. The cylindrical structure reduces the bed resistance by 30%-40%, making it suitable for high-air-volume processing equipment. A single adsorption tower can handle 10,000-50,000 m³/h and can operate stably for 6-12 months, significantly reducing the replacement frequency. It can also be used in scenarios such as natural gas mercury removal and gas station oil and gas recovery, achieving both environmental compliance and resource recovery.

Indoor air purification: Used in air purifiers, fresh air systems, air conditioning filters, etc., it can efficiently adsorb formaldehyde, TVOC, odors, dust, etc., purifying indoor air and improving the living environment. It can also be used in refrigerators, wardrobes, and cars to adsorb odors and moisture, keeping the space dry without secondary pollution, making it suitable for civil scenarios such as homes, offices, and vehicles.

Flue gas desulfurization and denitrification: In flue gas treatment in industries such as thermal power and steel, as a desulfurization and denitrification adsorbent, it can simultaneously adsorb sulfur dioxide and nitrogen oxides. Under operating conditions of 300-400℃, the desulfurization efficiency reaches over 95% and the denitrification efficiency exceeds 80%. The dry system produces no wastewater, and solid waste can be recycled, meeting the "zero emission" environmental protection requirements.

Gas protection: Used in gas masks in military and chemical industries, it can adsorb toxic gases to ensure personnel safety. With high mechanical strength and large adsorption capacity, the protection effect is stable and reliable.

2.2 Applications and Characteristics of Liquid-Phase Adsorption

It is mainly used to adsorb organic substances, heavy metals, pigments, odors, etc. in liquids, and is suitable for scenarios such as water treatment, food decolorization, and pharmaceutical purification. Its core characteristics are large adsorption capacity, fast filtration speed, and good regeneration performance.

Drinking water purification: Used in advanced treatment in waterworks and filter elements of household water purifiers, it can effectively remove residual chlorine, organic substances, pesticide residues, odors, and heavy metals (such as Pb²⁺, Cd²⁺) from water, increasing the compliance rate of drinking water to over 99%. It has no odor or residue and does not affect the taste of water. The cylindrical activated carbon filter element for household water purifiers is not easy to pulverize, has a service life of 6-12 months, and is the preferred choice to replace granular carbon.

Industrial wastewater treatment: For electroplating wastewater, printing and dyeing wastewater, pharmaceutical wastewater, oil refining wastewater, etc., it can adsorb heavy metal ions, dyes, phenols, cyanides, COD and other pollutants in water. Among them, the removal rate of chroma in printing and dyeing wastewater exceeds 85%, and the COD removal rate reaches 70%-80%, which can help wastewater meet discharge standards. In some scenarios, wastewater reuse can be realized, reducing water-saving costs. It can also be used in the tertiary advanced treatment of sewage treatment plants to further improve the quality of effluent water.

Food and pharmaceutical industries: In the food field, it is used for decolorization, deodorization, and purification of sugar solutions, edible oils, and alcoholic beverages. For example, in sucrose refining, it can remove pigments and colloidal impurities, increasing the purity of sucrose from 95% to 99.5%. In white wine brewing, it can adsorb aldehydes and fusel oils to improve the flavor of the wine. Cylindrical activated carbon made from wood and coconut shells, with low ash content (≤3%) and no odor, is more suitable for such scenarios. In the pharmaceutical field, it is used for the purification of raw materials such as antibiotics and vitamins, removing small molecular impurities and improving the purity of drugs. In the preparation of injections, it can remove pyrogenic substances to ensure medication safety.

Solvent recovery: In pharmaceutical, chemical and other industries, it is used for the recovery of organic solvents such as methanol, ethanol, and acetone. The adsorption capacity can reach 20%-30% of its own weight. After steam regeneration, it can be recycled 5-8 times, and the recovery rate is stably above 90%. This not only reduces raw material waste but also reduces environmental pollution, achieving a win-win situation of economic and environmental benefits.
2.3 Other Special Uses and Characteristics

Soil and groundwater remediation: For soils contaminated with pesticide residues and petroleum hydrocarbons, when applied in the form of a "Permeable Reactive Barrier (PRB)", it can adsorb pollutants such as benzene series and chlorinated hydrocarbons in soil water, with a remediation efficiency of 85%-95%; when combined with bioremediation technology, it can form a "adsorption-degradation" synergistic effect, shortening the remediation cycle. In groundwater remediation, it can also serve as a carrier for microbial habitation, enhancing the remediation effect.

Catalyst carrier: Used in petrochemical and environmental protection catalytic reactions, it can carry catalysts by virtue of its developed pore structure and stable chemical properties, improving the efficiency of catalytic reactions. It is suitable for catalytic scenarios such as chemical synthesis and waste gas treatment.

Emergency treatment: In response to chemical leaks from oil tankers and chemical plants, granular activated carbon can be spread to quickly adsorb leaked diesel oil, organic solvents, etc., reducing soil and water pollution and rapidly controlling the spread of pollution.

New energy field: Granular activated carbon with a high specific surface area (1500-2000 m²/g) can be used as electrode material for supercapacitors. Its excellent conductivity and cycle stability enable the capacitance retention rate to reach more than 90% after 10,000 cycles, providing key support for energy storage technology.
2.4 Summary of Core Product Features

Excellent adsorption performance: The specific surface area can reach 800-2000 m²/g, with a well-developed pore structure (including micropores, mesopores, and macropores). It can adapt to pollutants of different molecular sizes, featuring large adsorption capacity and fast adsorption speed, capable of quickly capturing harmful substances in gas and liquid phases.

High mechanical strength: Compression and wear resistant, with a mechanical strength of over 85% (over 92% for some high-end products). It can withstand airflow scouring and high-pressure impact, is not easy to break or pulverize, and is suitable for dynamic adsorption systems such as fixed-bed adsorption towers. It maintains stable performance during long-term use, with a service life of 2-3 years, which is more than 1.4 times that of ordinary activated carbon.

Strong chemical stability: Acid and alkali resistant, with stable chemical properties. It can maintain good adsorption performance in environments with different pH values (6-10), does not chemically react with the substances being treated, causes no secondary pollution, and is suitable for various industrial environments.
Wide adaptability: Available in various specifications. Products with different raw materials, diameters, and iodine values can be selected according to the needs of different scenarios, meeting both gas-phase and liquid-phase adsorption requirements. It also tolerates air volume fluctuations, has strong impact resistance, and can flexibly adapt to various scenarios such as industrial, civil, and high-end purification applications.

Economical and practical: The regeneration process is simple, allowing multiple cycles of use. The performance attenuation after regeneration is small, significantly reducing long-term use costs. Different specifications and raw material types can be flexibly matched with different budgets and working conditions, offering outstanding cost performance while balancing performance and cost.

Safe and environmentally friendly: Non-toxic, odorless, and non-irritating, containing no toxic or harmful substances that could affect human health. It can directly contact food and drinking water. After use, it can be recycled, regenerated, or disposed of safely, meeting environmental protection requirements.