高温污水源热泵在市政污泥干化系统中的应用  

Application of High Temperature-Wastewater Source Heat Pump in Municipal Sludge Drying System

作　　者：林静 LIN Jing(Shanghai Chengtou Wastewater Treatment Co.,Ltd.,Shanghai 201203,China)

机构地区：[1]上海城投污水处理有限公司,上海201203

出　　处：《净水技术》2024年第11期108-115,共8页Water Purification Technology

基　　金：上海市科委课题(22dz1209202)。

摘　　要：天然气锅炉是市政污泥干化系统的重点用能设备,是城镇污水处理厂节能降碳、降本增效的重要目标。高温污水源热泵(HT-WSHP)制冷供热项目具有良好的经济效益与碳中和效果。为实现污水处理厂减污降碳协同增效目标,文章研究HT-WSHP替代天然气锅炉作为市政污泥干化系统热源的技术和经济可行性。结果表明,采用双头压缩机设计的HT-WSHP系统出水温度可达85~90℃,在保证污泥干化效果的前提下,HT-WSHP系统出水温度稳定,机组平均制热性能(COP)指标不低于2.6,利用一台HT-WSHP替代一台天然气锅炉后,天然气单耗下降了65.5%,能源成本下降了17.2%,碳排放强度下降了18.2%,能耗强度下降了7.7%。Natural gas boilers are the key energy consuming equipment in municipal sludge drying systems.They are important targets for energy saving,carbon reduction,cost reduction and efficiency enhancement in urban wastewater treatment plants(WWTPs).High temperature-wastewater source heat pump(HT-WSHP)refrigeration and heating project has good economic benefits and carbon neutrality effect.In order to achieve the synergistic efficiency goal of pollution and carbon reduction in WWTPs,this paper studied the technical and economic feasibility of using HT-WSHP to replace natural gas boilers as heat sources for municipal sludge drying systems.The results showed that water temperature of dual compressors HT-WSHP could be heated to 85~90℃.On the premise of ensuring the sludge drying effect,effluent temperature of the HT-WSHP was stable,the average heating coefficient performance(COP)indice of HT-WSHP was no less than 2.6.After replacing one natural gas boiler with a HT-WSHP,the unit natural gas consumption decreased by 65.5%,and the unit energy cost decreased by 17.2%.The unit carbon emission intensity decreased by 18.2%,and energy consumption intensity decreased by 7.7%.

关 键 词：高温污水源热泵 天然气 能源成本 碳排放 能耗 

分 类 号：TU992[建筑科学—市政工程]