The AOD is by its very nature and purpose a large generator of CO_2.The total CO_2 emission from the process can be divided into two parts-the direct part which is proportional to the carbon removal from the metal and...The AOD is by its very nature and purpose a large generator of CO_2.The total CO_2 emission from the process can be divided into two parts-the direct part which is proportional to the carbon removal from the metal and the indirect part which is related to the consumption of additives such as reduction agents,slag formers and alloys. The production of the additives typically required for a heat causes large emissions of CO_2,in fact,often larger than what is generated from the direct part.By applying a real-time adaptive optimization of the oxygen to inert gas ratio over small time increments,the overall carbon removal efficiency is increased while the consumption of reduction agents and slag formers are decreased.This removes unnecessary production costs and minimizes the total emission of CO_2. In this paper a process concept with optimized gas administration over a large number of time increments is compared with a more traditional process practice.The work is based on industrially proven process models integrated in the UTCAS software package for converter management and control.Finally,this paper concludes on how the suggested process can be applied in actual plant operation.展开更多
文摘The AOD is by its very nature and purpose a large generator of CO_2.The total CO_2 emission from the process can be divided into two parts-the direct part which is proportional to the carbon removal from the metal and the indirect part which is related to the consumption of additives such as reduction agents,slag formers and alloys. The production of the additives typically required for a heat causes large emissions of CO_2,in fact,often larger than what is generated from the direct part.By applying a real-time adaptive optimization of the oxygen to inert gas ratio over small time increments,the overall carbon removal efficiency is increased while the consumption of reduction agents and slag formers are decreased.This removes unnecessary production costs and minimizes the total emission of CO_2. In this paper a process concept with optimized gas administration over a large number of time increments is compared with a more traditional process practice.The work is based on industrially proven process models integrated in the UTCAS software package for converter management and control.Finally,this paper concludes on how the suggested process can be applied in actual plant operation.
