The background of the development of Naboko zeolite rotor

As an important precursor of PM2.5, industrial organic waste gas refers to hydrocarbon compounds containing C2 to C10, benzene series substances, and other volatile organic compounds (VOCs) with some elements (such as oxygen, sulfur, chlorine, etc.) that are volatile. These usually have strong irritancy and toxicity, and some have "teratogenic, carcinogenic, and pathogenic" characteristics. During the atmospheric photochemical reaction process, some VOCs are transformed or attached to PM particles, causing great harm to people's health and living environment. Due to the fast diffusion speed, wide influence range, and difficulty in centralized collection and treatment of VOCs pollution, controlling their emissions at the source is the main way to control VOCs pollution.

Currently, large volume and medium-low concentration VOCs emissions account for a large proportion in organic waste gas pollution. Optimizing and upgrading the treatment technology for such waste gas will have a significant impact on the waste gas treatment work. If the purification and separation method is adopted, due to the large volume of waste gas and the complex composition of organic pollutants, whether using pressure swing adsorption or temperature swing adsorption methods, more energy consumption is required. Regardless of the energy perspective or economic perspective, such treatment technologies are not feasible. In addition, since the content of organic pollutants in most industrial waste gas far exceeds its air-fuel ratio range, direct thermal combustion treatment is also unfeasible.

With the continuous improvement of the treatment level, in order to solve the above problems, the adsorption concentration-combustion technology has emerged and become one of the most economical and effective technical approaches for the treatment of large volume and low-concentration waste gas. In the early stage of adsorption concentration technology, activated carbon materials were mainly used as adsorbents, but it had obvious defects such as poor safety performance, difficult continuous operation, and incomplete regeneration and desorption. In recent years, the zeolite rotor concentration + thermal oxidation technology has become the most promising large-volume, medium-low-concentration VOCs treatment technology. The zeolite rotor concentration rotor has the advantages of high adsorption efficiency, long service life, good safety, wide applicability, low equipment resistance, and stable gas concentration during the adsorption and desorption process. The VOCs waste gas after rotor concentration is treated by a regenerative catalytic oxidation device, converting VOCs into water and carbon dioxide, achieving harmless treatment.