Company Filing History:
2 out of 62 
1 out of 18 Years Active: 2018-2025
Title: Innovations of Chong Li in Phosgene Preparation
Introduction
Chong Li is a notable inventor based in Yantai, China, recognized for his contributions to the field of chemical engineering. He holds 2 patents that focus on the preparation and utilization of phosgene, a critical chemical in various industrial applications. His innovative approaches have significantly improved the efficiency and safety of phosgene synthesis processes.
Latest Patents
Chong Li's latest patents include a catalyst for preparing phosgene and a preparation method therefor. This invention provides a detailed method for preparing a catalyst that involves stirring and soaking activated carbon in a modifying solution, followed by the addition of dimethyltin dichloride and chromium oxide powders. The process culminates in the heating and calcination of the dried pre-modified activated carbon to create the catalyst.
Another significant patent is the method for the replacement of phosgene synthesis column catalyst. This method allows for the quick desorption of phosgene from the catalyst in a phosgene synthesizing tower. By purging the catalyst with nitrogen gas and then ammonia gas, the process ensures that the phosgene content at the outlet remains below 0.5 ppm. This innovation not only saves time but also reduces nitrogen gas consumption and enhances operational safety.
Career Highlights
Chong Li has worked with prominent companies in the chemical industry, including Wanhua Chemical Group Co., Ltd. and Wanhua Chemical (Ningbo) Co., Ltd. His experience in these organizations has contributed to his expertise in chemical processes and innovations.
Collaborations
Chong Li has collaborated with notable colleagues such as Dongke Zhao and Hongke Zhang. Their combined efforts have fostered advancements in chemical engineering and phosgene synthesis.
Conclusion
Chong Li's innovative patents and career achievements highlight his significant contributions to the field of chemical engineering. His work continues to influence the efficiency and safety of phosgene preparation methods.