Provide technical support for emission reduction in sulfuric acid plants

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At the 19th Annual Sulfuric Acid Industry Conference and Sulfuric Acid Technology Exchange Meeting held in Jiangsu Province not long ago, the AS series of new sulfuric acid catalysts developed independently by Shandong Aobao Group attracted the attention and recognition of experts present as well as representatives of sulfuric acid production enterprises, when competing side by side with catalyst products from abroad. 　　When talking about the reasons why the new high-efficiency sulfuric acid catalysts in the AS series are so popular, Liu Zongman, chairman of Aoba, told reporters: “The AS series of products were originally developed to address the technical gaps in catalysts required for large-scale sulfuric acid production facilities following their localization during the 11th Five-Year Plan period.” As of March 1 this year, the **Emission Standards for Pollutants in the Sulfuric Acid Industry** came into effect. The new standards set a maximum allowable emission concentration of sulfur dioxide for newly built sulfuric acid production facilities at 400 mg/Nm3, which represents a 58.3% reduction compared to the old standards; this undoubtedly poses a significant challenge for sulfuric acid manufacturers. Our efficient catalysts thus have an excellent opportunity for development. ” 　　Liu Zongman explained that in order to maintain the advancement of its products, as early as the initial stage of research on AS catalysts, the company adopted the most advanced product concepts available internationally and included supporting services within the scope of the product concept itself. By improving these services, the company aimed to maximize the excellent performance of its products. The most representative examples of this approach are the development of industrial activity simulation devices for catalysts and guidance curves for operational procedures. 　　As a supporting R&D device for AS products, the core of the catalyst industry activity simulation unit lies in the miniaturization and laboratory-scale adaptation of the sulfuric acid conversion section. Liu Zongman explained in detail: \"By using the sulfuric acid production facility owned by Aobao Group to generate the raw material gas, the role of catalysts in the sulfur dioxide conversion process can be demonstrated in the most straightforward manner, providing a basis for evaluating and improving new products during testing.\" At the same time, thanks to the flexibility and operability resulting from the compact design of this device, Aoba is able to adjust various parameters such as the composition of the inlet gas, catalyst loading, and reaction temperature with great ease; as a result, its application scope has also expanded to the field of catalyst support services. At the same time, through mutual correction with computer simulation systems, fast and accurate design of loading schemes and adjustment of parameters are achieved. ” 　　At present, Aobao possesses the second set of equipment in China for pilot-scale testing of vanadium catalysts. Connected in parallel to the actual production system, this device enables adjustment of gas concentration, flow rate, oxygen-to-sulfur ratio, loading amount, and temperature. It has the capability to determine the catalyst’s activity parameters under different operating conditions, and the data and conclusions obtained are useful for practical evaluations. This type of device can be directly applied in design and production; through the refinement of catalyst carriers, the optimization of active components, and innovations in manufacturing processes, the high efficiency of the AS series of products is ensured, thus forming a relatively complete product portfolio. Source: China Chemical Industry News