Gas Disturbance Model and Industrial Application of the BH Packing

This study presents the development and comprehensive evaluation of a novel structured packing, termed ‘BH’ packing (derived from Beijing University of Chemical Technology), alongside the introduction of an innovative gas disturbance model and its successful industrial implementation. Addressing inherent limitations of traditional structured packings—such as liquid film aging and high mass transfer resistance in straight corrugated channels—the BH packing incorporates a uniquely designed alternating-angle corrugation (45°–30°–45°). This structural innovation actively disrupts the liquid film, intensifies gas–liquid interaction, and significantly enhances mass transfer efficiency. Experimental assessments demonstrate that the BH-250 packing outperforms conventional corrugated plate packings in gas distribution uniformity. Furthermore, the newly developed gas disturbance model can accurately capture the gas mixing dynamics within the packed bed. Its prediction results are more accurate than those of traditional mixing tank models, especially in regions near the tower wall. In industrial practice, the application of BH packing has led to remarkable improvements in product purity: methanol purity reached 99.95%, hexafluorobutene achieved 6N grade, and dichlorosilane impurities were reduced to parts per trillion (ppt) levels. These outcomes underscore the substantial contribution of BH packing to advancing separation efficiency and product quality in high-purity chemical production.