余热利用为清洁供暖注入新动能

Core Viewpoint - The article emphasizes the importance of utilizing industrial waste heat in the transition to a clean and low-carbon heating system in northern China, addressing the high energy consumption and emissions in the heating sector while leveraging existing waste heat resources for sustainable urban development [1]. Group 1: Industrial Waste Heat Utilization - The "Liaohe into Jinan" project in Shandong is highlighted as a representative example of effectively utilizing industrial waste heat, capable of replacing approximately 1.299 million tons of standard coal and reducing CO2 emissions by about 356,000 tons per heating season [2]. - The project aims not only to deliver heat but also to address the mismatch between urban heating needs and industrial layout through regional energy collaboration [2]. - Currently, the proportion of waste heat utilization in China's clean heating system is around 25%-30%, which is significantly lower than the over 50% seen in more mature markets, indicating substantial room for improvement [3]. Group 2: Policy and Financial Support - Shandong has made policy advancements by not categorizing waste heat projects under the "high energy consumption" management framework, thus facilitating project approvals and resource utilization [3]. - The province is also incorporating some projects into government special bond support and encouraging diverse financing channels, including international financial institutions, to ensure stable funding for waste heat utilization [4]. - The article notes that various waste heat projects are being developed across multiple cities in Shandong, demonstrating the technical maturity and economic feasibility of waste heat utilization [4]. Group 3: Energy System Transformation - The article argues that waste heat utilization is not merely an optimization of heating methods but a crucial component in constructing a new energy system, addressing inefficiencies and unclear emission reduction pathways in the current heating system [5]. - There is significant potential for waste heat recovery from various industries, including steel, cement, and chemical sectors, which could support over 60% of heating needs in northern regions if effectively harnessed [5]. - The existing infrastructure, with approximately 650,000 kilometers of centralized heating pipelines and nearly 90% coverage, provides a solid foundation for integrating waste heat into urban energy systems [5]. Group 4: Challenges and Recommendations - Despite the support for waste heat utilization, challenges remain, including the need for detailed top-level planning, insufficient inter-departmental collaboration, and a lack of understanding regarding the stability and economic viability of waste heat [6]. - Recommendations include integrating waste heat utilization into urban energy planning, utilizing financial instruments to attract private investment, and accelerating the innovation of technical standards and business models to enhance the stability and economic viability of waste heat projects [7]. - The future energy system is envisioned as one that synergizes electricity and heat, with those who effectively utilize waste heat gaining a competitive advantage in the low-carbon transition [7].