化工余热源集中供热系统运行优化

Operation optimization of central heating system from chemical industries waste heat source

化工行业具有丰富的低温余热资源,而利用余热进行冬季供热可有效缓解北部城镇的环境污染。文中从三友化工股份有限公司的余热水替代电厂低真空供热热源分析入手,通过建立数学模型进行吸收式热泵及汽水加热器的选型,实施唐山市南堡开发区集中供热系统热源改造;通过溴化锂吸收式热泵机组供热系统的运行分析,提出了运行优化策略和方法。结果表明:采用热泵机组与汽水换热器并联的供热方式,可确保供热品质,节能效果明显。其研究结果可为工业余热源供热系统的改造和运行提供借鉴。

The chemical industry is rich in low-temperature waste heat resources,while the use of waste heat for winter heating can effectively reduce the environmental pollution in the northern towns. From the analysis of replacing waste hot water of Sanyou Chemical Industries Company Limited with lowvacuum heat source of the power plant,absorption heat pump and steam water heater through the establishment of mathematical model is selected and transformation of heat source of central heating system in Nanbao development zone of Tangshan is carried out; through the operation analysis of the heating system of lithium bromide absorption heat pump unit,the operational optimization strategy and method are put forward. The results showthat the heating mode of the heat pump unit and the steam water heat exchanger can be used in parallel to ensure the heating quality,and the effect of energy saving is obvious. The results of the study can provide reference for the transformation and operation of the chemical industries waste heat source heating system.