Core Viewpoint - The article discusses an innovative heating solution in Dongli District, Tianjin, where waste heat from garbage incineration is utilized to provide residential heating, replacing traditional gas boilers. This "warm flow revolution" highlights the potential of waste heat recovery in addressing energy costs and environmental concerns [1][13]. Group 1: Waste Heat Utilization - Dongli District collects waste heat from two garbage incineration plants to supply heating to residential areas, transforming previously wasted energy into a valuable resource [1][7]. - The project utilizes a three-stage heat extraction system, which includes a turbine heat pump that efficiently captures and transfers heat from the incineration process [5][12]. - The incineration plants process approximately 1,900 tons of household waste daily, generating significant amounts of waste heat that can be repurposed for heating [7][13]. Group 2: Technical Innovations - Key technical modifications were made to the existing equipment, including the overhaul of three boilers to ensure stable operation and reduce failures during the heating period [4][10]. - The system's first stage uses steam at around 400°C to extract heat, while subsequent stages further refine the temperature for efficient heating delivery [5][10]. - The project has successfully achieved a heating temperature of around 70°C, meeting the heating demands of approximately 300 million square meters [10][12]. Group 3: Economic and Environmental Impact - The cost of heating has been significantly reduced from 110 yuan to 55 yuan per gigajoule, resulting in substantial savings for the local government and residents [10][12]. - The project is expected to lower carbon emissions by approximately 9.33 million tons annually, equivalent to the environmental benefit of planting 8.5 million trees [13]. - The initiative not only reduces government subsidies but also enhances the quality of life for residents by providing reliable heating at a lower cost [12][13]. Group 4: Challenges and Collaboration - The project faced numerous logistical challenges, including the need to lay 12 kilometers of pipeline across various terrains and infrastructure [7][8]. - A framework cooperation agreement was established to ensure fair pricing and investment returns, facilitating collaboration between different stakeholders [8][12]. - The successful implementation of this project serves as a model for other cities to explore similar waste heat recovery solutions, promoting urban sustainability and energy efficiency [13].
中国改革现场丨供暖新思路：垃圾变暖气 天津东丽区如何实现垃圾焚烧电厂余热供暖？
Yang Guang Wang·2025-12-29 03:12