This paper presents a new approach to study the process of coal gasification. Non-linear programming techniques are used to determine the value of the model parameters that depends on coal species and experimental con...This paper presents a new approach to study the process of coal gasification. Non-linear programming techniques are used to determine the value of the model parameters that depends on coal species and experimental conditions and thus minimize the difference between experimental results and model predictions. Model predictions being in good agreement with the experimental results show that this method of combining model with experiment is effective for modeling complex processes.展开更多
As a high efficiency and low pollution combustion technologys coal-fired combined cyclehas drawn so much attention and been developed quickly all over the world during the lastseveral years. A novel combined cycle sys...As a high efficiency and low pollution combustion technologys coal-fired combined cyclehas drawn so much attention and been developed quickly all over the world during the lastseveral years. A novel combined cycle system was put forwajrd by Thermal Engineering Department of Tsinghua University in 1992. The improved type of the system now named cokecarried--heat gasification coal--fired combined cycle, whose renovate include: the gasificationchamber was moved from the boiler inside to outside as a separate gasifier which took thecoke as gasification heat source. This paper adopted cell model and modular method to setup a complete steady state mathematical of the combined cycle according to the characteristic of the different components. This model is very important to set up the simulation software package of the large scale coal--fired combined cycle and research the dynamic characterof the system and carry out the control scheme.展开更多
文摘This paper presents a new approach to study the process of coal gasification. Non-linear programming techniques are used to determine the value of the model parameters that depends on coal species and experimental conditions and thus minimize the difference between experimental results and model predictions. Model predictions being in good agreement with the experimental results show that this method of combining model with experiment is effective for modeling complex processes.
基金Supported by the National Key State Basic Research Development Program of China(973 Program,2010CB227000)the National High Technology Research and Development Program of China(863 Program,2008AA052310)
文摘As a high efficiency and low pollution combustion technologys coal-fired combined cyclehas drawn so much attention and been developed quickly all over the world during the lastseveral years. A novel combined cycle system was put forwajrd by Thermal Engineering Department of Tsinghua University in 1992. The improved type of the system now named cokecarried--heat gasification coal--fired combined cycle, whose renovate include: the gasificationchamber was moved from the boiler inside to outside as a separate gasifier which took thecoke as gasification heat source. This paper adopted cell model and modular method to setup a complete steady state mathematical of the combined cycle according to the characteristic of the different components. This model is very important to set up the simulation software package of the large scale coal--fired combined cycle and research the dynamic characterof the system and carry out the control scheme.
