关于600MW亚临界机组供热改造的研究

浙江大学硕士学位论文AbstractAbstractIn recent years,with the gradual increase in fog and haze,China's growingemphasis on environmental protection,the abolition of local heating boilers,the use oflarge-scale energy-saving environmental protection boiler heating,has become aninevitable trend.Combined heat and power is one of the most important ways to saveenergy,and the energy saving effect is the most significant.According to the national development and Reform Commission,Ministry ofscience and technology,Ministry of industry and information technology,Ministry ofland and resources,the Ministry of housing and urban construction,the Ministry ofCommerce issued in July 1,2010 "China resources comprehensive utilizationtechnology policy program"/"Guiding Catalog of industrial structure adjustment"encouraged "twenty-six,environmental protection and resource conservation andcomprehensive utilization"of the relevant requirements.Wangtan power company and the Tangshan Development Zone to actively contactthe residential heating and reducing the pollution of the Beijing Tianjin Hebei region,Wangtan power company to do the only central heating source for the region,beresponsible for the transformation of the heating unit.According to the requirements ofheating and the actual situation of the unit,the way to control the extraction parametersof the medium and low pressure pipe connected with the steam extraction and theinstallation of the hydraulic butterfly valve is introduced.After accounting,the unitrated heating 350 t/h,maximum heating capacity of 400 t/h.Can meet the needs of theTangshan Port Development Zone at the present stage and long term heat supply.Key Words thermal power unit;condenser vacuum;thermodynamic properties;circulating water system;vacuum pump refrigerator;optimal operation