真空吹氧脫碳製程數學模型之開發與應用

Development and Application of Mathematic Model for VOD Process

林暉然(Hwei-Ran Lin) ； 孫海平(Haiping Sun) ； 劉永章(Yung-Chang Liu)

《燃燒季刊》 117期 (2022/05) Pp. 50-57

https://doi.org/10.30041/CQ.202205_(117).0004

摘要

在本文中，將VOD製程（真空吹氧脫碳）之熔池表面和頂吹噴槍之間，熱點區域中的反應現象，開發成一個模型。求解熱點區之反應速率的基本原理，是利用反應攪拌氣體的流量和組成、頂吹O_2的流量、二次燃燒和水煤氣變換反應的平衡，以及每一個在熱點區之氣體物種的守恆，同時求解在熔池表面反應速率、二次燃燒和水煤氣變換反應速率、廢氣流量和組成。VOD模型可用於研究氧氣頂吹對VOD製程脫氣效率的影響。

關鍵字

真空吹氧脫碳製程 ； VOD ； 二次燃燒

並列摘要

In this article, a model for the description of the reaction phenomena in the hot spot zone between the bath surface and top blown lance in a VOD process (Vacuum Oxygen Decarburizing process) was developed. The fundamental for solving reaction rates in the hot spot zone is that, using the flowrate and composition of reacted stirring gas, the flowrate of top blown O2, the equilibriums of second combustion and water gas shift reactions, and the conservations of each gas species in hot spot zone to simultaneously solve the reaction rates at surface of steel bath, the rates of second combustion and water gas shift reactions, and the flowrate and composition of off gas. The VOD model is able to be applied for the investigation of the effect of oxygen top blow on the degassing efficiency in VOD process.

並列關鍵字

VOD process ； VOD ； Secondary combustion