The inorganic heat transfer technology is used to two projects of heat recovery , one is the heat recovery steam - generator retrofit in a steel - making cooling agglomeration machine of a steel group , the other is an air pre - heater design in oil - refining atmospheric pressure heating furnace of a petrochemical enterprise 对某钢铁集团炼钢带冷烧结机余热回收和某石油化工企业炼油常减压装置加热炉余热回收项目，采用新型无机传热热管作为传热元件，分别进行余热锅炉和空气预热器余热回收方案的热力计算和实际设计。
This essay has touched upon the following work : 1 . has built up theoretic models including static mathematic models of air compressor , combustion chamber , gas turbine , waste heat recovery boiler and steam turbine which are deduced according to the feature and theory of the equipment of the object of study . upon establishment of each model based on the actual conditions , a method of multiple imitation and combination is applied to parts which have already got characteristic curves to have achieved quite accurate curves whilst the method of neural net is applied to the parts which have no characteristic curves for establishment of models 本文进行了以下的主要工作：建立理论模型，根据对象的实际设备的特点和理论关系推导压气机、燃烧室、燃气轮机、余热锅炉、汽轮机的静态数学模型；根据本研究的实际情况，在建立各部件模型时，对已有特性曲线的部件，采用多项式拟合的方法，得到较为准确的特性，而对部分没有曲线的特性，则采用神经网络的方法建立模型。
First , based on reading lots of references biomass gasification technology is discussed in detail including the basic principle of biomass gasification , categories and working principle of biomass gasification equipment and ancillary system of biomass gasification in this paper . second , performance calculation modules of sub - systems such as gas turbine , heat recovery steam generator , steam turbine and dryer in the bigcc system are built , especially , performance calculation modules of gas turbine fueling biomass fuel gas based on variable specific heat and biomass dryer are built . in the mean time , program of performance calculation modules for sub - systems is developed using delphi 6 . 0 首先，本文在阅读大量文献基础上对生物质气化技术进行了详细的阐述，主要包括：生物质气化基本原理、生物质气化设备的种类和工作原理以及生物质气化的附属系统；其次，建立了bigcc系统中各个子系统燃气轮机、余热锅炉、蒸汽轮机、干燥器等的性能计算模型，特别建立了基于变比热的烧生物质燃料气的燃气轮机性能计算模型和生物质干燥器的性能计算模型，并用delphi6
The original design was intermediate vapor 42t / h , but the actual output is 30 - 35t / h , at the same time the temperature and pressure of the vapor are unstable , it affects the economic efficiency , the reason were the collecting dust on the heat area and serious corrision , they led to the decrease of the boiler load , and need stop to washing the dust , the article deals with the reform of the exhaust gas boiler , at the basic of the design condition , after thermo calculation , flute gas , resistence calculationand strenth calculation , the structure of the heat surface had been rearranged , then the proof calculation was done 原设计产中压蒸汽42吨时，但投运后只产30 - 35吨时，并且蒸汽温度和压力均不稳定，影响到经济效益。其原因是受热面积灰和腐蚀严重，影响传热使锅炉负荷下降，不能长时间运行，需停产清理积灰。本论文针对此余热锅炉的技术改造，在给定设计条件基础上，通过热力计算，烟气阻力计算和强度计算，对锅炉受热面结构重新布置，然后再作校核计算。
Wear resistant layer of cylinder and double - layer liner in catalyst creaking apparatus ( without or with tortoiseshell net can be used ) , inner liner of carbon monoxide exhaust - heat boiler , pouring at site for furnace roof with high temperature of heating furnace of steel rolling , different forging furnace , resistance furnace , the prefabricated parts can also be made 催化裂化装置中的筒体耐磨层及双层衬里, （无龟甲网和有龟甲网均可采用）及一氧化碳余热锅炉的内衬，也适用于轧钢加热炉、各种煅造炉、电阻炉的炉顶、炉墙、炉底高温部位的现场浇注，可制成预制构件。
But recently in our country the initial investment and the fuel costs of bchp system are higher , so in this case it is necessary to optimize the important equipment - heat recovery steam generator ( hrsg ) to make the whole system have the best thermal - economic , and it will have the important meaning to popularize the bchp system smoothly in our country 但是，目前国内bchp系统初投资和燃料价格都较高，在这种情况下对系统中的一个关键设备? ?余热锅炉进行参数优化，以使整个工程达到最佳的经济性显然非常必要，对bchp在国内的顺利推广具有重要意义。
The simulation results show that fdm can track changing operation mode in time so as the real - time control is realizable , and ssmmc algorithm , compared with other algorithm , can decrease the vibration better in transition region so well as to improve the control performance effectively 最后以余热锅炉汽包水位系统为例进行仿真，结果表明，采用分形测度作为切换指标可以及时地跟踪到系统的突变；基于此指标进行软切换控制策略可以在多扰动的工业过程克服过渡区振荡，提高了控制性能。
