焦载热气化燃煤联合循环系统的数学模型研究

１焦载热燃煤联合循环系统简介中国能源工业以煤炭为主的格局，决定了能源发展及可持续发展战略必须立足于“煤的高效及清洁燃烧技术”。在这一方面，燃煤的联合循环技术最具潜力；它能大幅度地提高发电厂的热效率，并使污染问题得到解决。清华大学近年来一直致力于这方面的工作。１９９２年，清华大学申报了差速循环流化床和飞灰造粒回燃两项专利，同时对载热气化技术进行了深入地研究。在以上工作基础上，提出了一种易于实现的新型燃煤联合循环发电技术：载热部分气化联合循环技术，并于同年申报了专利。该系统［１－２］采用高温颗粒流动…

STUDY ON THE MATHEMATICAL MODEL OF COKE CARRIED-HEAT GASIFICATION COAL-FIRED COMBINED CYCLE

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.