近些年来,原位化学氧化技术(in-situ chemical oxidation, ISCO)在地下水修复工程成为主流修复技术。本文主要从氧化剂的输送方法,氧化剂输送相关设计参数以及与其他修复技术联用三个方面对ISCO技术的应用进行了系统介绍。为了更好的建...近些年来,原位化学氧化技术(in-situ chemical oxidation, ISCO)在地下水修复工程成为主流修复技术。本文主要从氧化剂的输送方法,氧化剂输送相关设计参数以及与其他修复技术联用三个方面对ISCO技术的应用进行了系统介绍。为了更好的建立符合我国国情的地下水原位化学氧化技术体系,除了引入国外成功案例经验外,还需加强我国ISCO技术的工程积累与基础应用研究。展开更多
In the design of chemical processes,such as catalytic cracking of bitumen and heavy oil,the knowledge of phase behavior at the critical endpoint is essential.Based on the PR equation of state,the algorithm developed b...In the design of chemical processes,such as catalytic cracking of bitumen and heavy oil,the knowledge of phase behavior at the critical endpoint is essential.Based on the PR equation of state,the algorithm developed by Heidemann and Khalil for calculating critical properties was used to compute critical points.An algorithm for determining the equilibrium phase of the critical point using the tangent plane criterion was developed,and was used to calculate the critical endpoints of different mixtures,including non-polar,polar and associating systems.The critical endpoint,representing the type of the phase behavior,was employed to fit the interaction parameter of mixtures in critical state at high pressure.Lines of critical endpoints for ternary mixtures were also determined with the algorithm.展开更多
文摘近些年来,原位化学氧化技术(in-situ chemical oxidation, ISCO)在地下水修复工程成为主流修复技术。本文主要从氧化剂的输送方法,氧化剂输送相关设计参数以及与其他修复技术联用三个方面对ISCO技术的应用进行了系统介绍。为了更好的建立符合我国国情的地下水原位化学氧化技术体系,除了引入国外成功案例经验外,还需加强我国ISCO技术的工程积累与基础应用研究。
文摘In the design of chemical processes,such as catalytic cracking of bitumen and heavy oil,the knowledge of phase behavior at the critical endpoint is essential.Based on the PR equation of state,the algorithm developed by Heidemann and Khalil for calculating critical properties was used to compute critical points.An algorithm for determining the equilibrium phase of the critical point using the tangent plane criterion was developed,and was used to calculate the critical endpoints of different mixtures,including non-polar,polar and associating systems.The critical endpoint,representing the type of the phase behavior,was employed to fit the interaction parameter of mixtures in critical state at high pressure.Lines of critical endpoints for ternary mixtures were also determined with the algorithm.
