关键词: 原料替代, 安全隐患, 传热特性, 反应性差异, 兼容性

Abstract:

The chemical industry is the pillar industry of China's national economy, and plays a key role in realizing the process of "carbon peak and carbon neutrality". As the demand for resources and the level of application of new materials improve, raw material substitution in the chemical industry has become an important driving force to promote green transformation and industrial upgrading. In response to safety hazards arising from the chemical raw materials substitution, the potential impact of raw materials reactivity differences of, health and environmental risks, equipment compatibility, and changes in processes on the safety of chemical processes was investigated in depth. The results showed that differences in chemical and heat transfer characteristics of different feedstocks may led to variations in reaction rates, temperatures, pressures, and types of by-products, which in turn increased the instability of the process. Changes in the toxicity and emission characteristics of alternative feedstocks may trigger new health and environmental risks with negative impacts on ecosystems and human safety. Corrosion and compatibility issues with new feedstocks could lead to an increased probability of equipment failure, or even failure to keep the new process running properly. Lack of adequate consideration of new risks arising from changes in processes could lead to safety incidents. This study provided theoretical support and technical guidance for the safety management of chemical raw material substitution processes, and laid the foundation for process optimization and risk control of future chemical raw material substitution processes.

Key words: chemical raw materials substitution, safety hazards, heat transfer characteristics, reactivity differences, compatibility