"Development and Industrialization of Key Technologies for Acid Production via the Wet Process Using Decomposed Gypsum Kiln Gas\" – Passed the Scientific and Technological Achievement Appraisal

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On July 12, the China Petroleum and Chemical Industry Federation organized a meeting in Beijing to evaluate the scientific and technological achievements related to the development and industrialization of key technologies for producing acid using the wet process from gypsum kiln gas. The appraisal committee concluded through its evaluation that this technology has generally reached an internationally advanced level, and agreed to approve the appraisal of this scientific and technological achievement. Developed jointly by Lubei Group and Keyang Environmental Engineering (Shanghai) Co., Ltd., this technology introduces a new wet acid production process based on the \"one rotation, one cooling\" principle. It incorporates a self-developed high-efficiency SO₂ catalyst as well as an insulated structure featuring \"three beds and two heat exchangers,\" enabling a significant breakthrough with a single conversion rate of SO₂ of ≥99.3% even under conditions of high water vapor pressure. Industrial plants built on core innovations have, through long-term operation, demonstrated excellent adaptability to multiple types of gases; they have led to an increase in heat recovery rates and simplification of processes, providing an innovative technical approach for the recycling of industrial gypsum. This achievement represents a new milestone for Lubei Group, following its receipt of the **Second Prize for Scientific and Technological Progress in 2001; it is the result of 47 years of technical development. A system for the synergistic, high-value utilization of sulfur- and calcium-containing waste has been successfully established, enabling the efficient use of resources such as industrial gypsum, waste sulfuric acid, and lithium-calcium slag. Lubei Group stated that in the next step, it will focus on overcoming the bottlenecks related to the large-scale use of sulfur- and calcium-containing solid wastes, and accelerate the development of an industrialization framework that covers the entire process from design to manufacturing and operation. It will also work together with industry partners to explore cross-sector applications in areas such as phosphate chemicals, titanium dioxide, and the lithium industry.