In August 2025, the acid-gas dust collector project supporting the standby desorption tower for coke-oven desulfurization and denitrification at Xinyu Steel, undertaken by our company, had been operating successfully for ten months and passed its long-term operational acceptance test.
In this project, the high-temperature dust collector played a critical role. During the desorption process in the regeneration unit of the activated-coke desulfurization and denitrification system, high-concentration, high-temperature acid gas (SO2) is generated together with a high concentration of carbon powder particles. If left untreated, the carbon powder would enter the WSA sulfuric-acid production section with the acid gas, affecting sulfuric-acid quality and shortening catalyst service life. The high-temperature dust collector effectively removes carbon powder from the acid gas at the source, significantly improving catalyst utilization in the acid-production section, reducing operating costs for the client, and supporting stable, cost-controlled plant operations.
The high-temperature dust collector used in this project is a newly developed product of Jiangsu Jiulang High-Tech Co., Ltd. It delivers outstanding performance in high-temperature, high-humidity environments up to 600°C, with pressure drop below 800 Pa and outlet dust concentration below 1 mg/m³—fully meeting ultra-low flue-gas emission standards.
This achievement demonstrates the company’s strong R&D capabilities and delivers substantial economic and social benefits. Economically, it reduces the risk of penalties for non-compliant dust emissions, improves sulfuric-acid production efficiency, and increases product value. Socially, it reduces pollutant emissions, helping improve regional air quality and advance green development.
Notably, the company’s high-performance purification membrane products were selected for the National 13th Five-Year Plan Exhibition of Scientific and Technological Innovation Achievements, representing an outstanding example of China’s innovation achievements. The company’s membrane technology has also received authoritative recognition: an expert committee comprising Academicians Gao Congjie and Shu Xingtian concluded that the overall technology has reached an internationally advanced level, while its dual-hydrophobic membrane-material technology has reached an internationally leading level.
The company has also received numerous honors, including the Second Prize of the National Science and Technology Progress Award, the First Prize of the Jiangsu Provincial Science and Technology Award, and the Second Prize of the Ministry of Education Technology Invention Award. These awards affirm its technological innovation capabilities and inspire its continued progress.
Looking ahead, Jiangsu Jiulang High-Tech Co., Ltd. will continue to pursue innovation-driven development, increase investment in research and development, and continuously enhance its technology and product quality to make greater contributions to green development in China’s industrial flue-gas purification sector.
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Jiangsu LongMembrane High-Tech Co.,Ltd.
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