和远气体(002971.SZ)：公司取得1项发明专利证书

Core Viewpoint - The company, Heyuan Gas (002971.SZ), has recently obtained a patent for a new process and device for preparing ultra-pure carbonyl sulfide from industrial carbonyl sulfide, which aims to enhance the purity and efficiency of production [1] Group 1: Patent Details - The patent is titled "A Process and Device for Preparing Ultra-Pure Carbonyl Sulfide from Industrial Carbonyl Sulfide" with patent number ZL 2023 1 0131661.7 [1] - The process involves pre-treatment to remove metal ions and water, followed by multi-stage distillation to improve purity [1] - The end of the multi-stage distillation process captures light components to avoid difficulties in removing metal ions, addressing the shortcomings of existing technologies regarding product purity and distillation effectiveness [1]