Honeycomb activated carbon is made of high-quality coal as the raw material, and the auxiliary materials form a square-hole honeycomb activated carbon block (filterability). As a new type of environmentally friendly adsorption material, it is mainly used for the purification of various organic waste gas with low concentration and large air volume. It is used to treat adsorption beds containing toluene, xylene, benzene, and other benzene, phenols, esters, aldehydes and other organic gases and malodorous gases and various gases containing trace heavy metals. The honeycomb structure makes the product volume density Small, large specific surface area, high adsorption efficiency, low wind resistance coefficient, excellent aerodynamic product reduction. The energy consumption of the equipment is reduced, the cost of the adsorption bed and the operation cost are reduced, and the purification efficiency of the waste gas treatment is high, and the purified gas fully meets the environmental protection emission requirements. According to the adsorption characteristics of honeycomb activated carbon, the activated carbon is mainly used for air purification, waste gas recovery (such as the recovery of gas "benzene" in the chemical industry), and precious metal recovery and extraction (such as the absorption of gold). With the development of science, the use of activated carbon has become more and more extensive. As the country attaches importance to the ecological environment, activated carbon is also playing an increasing role.
1. Honeycomb activated carbon has a relatively developed void structure and a large specific surface area.
Honeycomb activated carbon has a relatively developed void structure. In addition to active molecular sieves, it has a wide range of pores and has pores with different pore sizes. It can adsorb various substances with different molecular sizes. At the same time, it has a large number of micropores, so the specific surface area is large. The adsorption power is also great.
2. Surface characteristics of activated carbon
The surface properties of activated carbon vary depending on the activation conditions. The surface of activated carbon with high-temperature water vapor contains alkaline oxides. The activated carbon activated by zinc chloride contains acidic oxides on the surface, and the latter has a particularly large adsorption capacity for alkaline oxides. Therefore, the surface activation properties, pore size distribution, and pore shape of honeycomb activated carbon blocks are the main reasons why honeycomb activated carbon has selective adsorption.
Honeycomb activated carbon with strong catalytic properties is often used as a catalyst carrier in the chemical industry. Catalytic substances are deposited on the surface of the honeycomb activated carbon block and then used as a catalyst together. At this time, the role of honeycomb activated carbon is not limited to supporting activators. , It has a significant impact on the activity, selectivity, and service life of the catalyst. At the same time, it also has a catalytic effect. Therefore, honeycomb activated carbon is accompanied by catalysis in many adsorption processes and exhibits catalytic activity. For example, honeycomb activated carbon adsorbs sulfur dioxide and becomes sulfur trioxide through catalytic oxidation. In summary, the activated carbon block (16 pores/c㎡) made of activated carbon powder has a porous structure, huge internal surface area, and good heat resistance, acid resistance and alkali resistance, and can be used as a catalyst carrier. best choice.
