基于“地热能+”的县城区清洁供暖无煤化建设思路及探索研究

Research and technical route of clean heating in county without coal based on “geothermal +”

通过分析城区现有供热系统的特点,结合当地现有的能源基础条件,提出无煤化清洁供暖的建设思路,地热能源站全部采用"地热能+"的分布式多热源供热模式,燃气锅炉替代燃煤锅炉,同时引入生物质电厂余热,形成以电厂余热为基础负荷,燃气锅炉调峰的市政集中供热格局,针对能耗较高的老旧建筑,实施建筑节能改造,降低能源需求侧能耗。项目总投资5.94亿元,静态回收期为5.5年,每年可减排9.81万吨CO2,360.81吨SO2,351.01吨NOX,68.84吨颗粒物,经济环保效益显著。

By analyzing the characteristics of the existing heating system in the urban area and combining the existing local energy conditions,this article puts forward the construction ideas of clean heating without coal. Geothermal energy stations use the "geothermal + "multi-heat source heating mode. Gas boiler replaces coal-fired boiler, simultaneously introduce waste heat from biomass power plants to form a compound energy peaking system. Implement of building energy-saving to reduce energy consumption on the energy demand side. The total investment of the project is 594 million yuan, and the static recovery period is 5.5 years. It can reduce 98,100 tons of CO2,360.81 tons of SO2, 351.01 tons of NOX, and 68.84 tons of particulate matter each year. The economic and environmental benefits are significant.