并网成功！小红门项目实证：沼气发电机组成绿色低碳转型核心利器

　　Grid connection successful! Empirical Study of Xiaohongmen Project: Biogas Generator as a Core Tool for Green and Low Carbon Transformation

　　近日，由北京市政总院设计的小红门再生水厂沼气发电项目顺利并网发电，标志着我国再生水厂沼气资源化利用迈入高质量发展新阶段，也充分彰显了沼气发电机组在绿色低碳转型中的核心价值。作为项目核心发电设备，沼气发电机组凭借高效转化、稳定运行的优势，将再生水厂产生的沼气转化为清洁电力，既解决了沼气排放的环保难题，又为厂区生产提供稳定能源，为首都绿色低碳转型注入强劲新动能，成为可再生能源利用的标杆案例。

　　Recently, the Xiaohongmen Reclaimed Water Plant Biogas Power Generation Project, designed by Beijing Municipal Engineering Institute, was successfully connected to the grid for power generation, marking a new stage of high-quality development in the utilization of biogas resources in China's reclaimed water plants and fully demonstrating the core value of biogas power generation units in green and low-carbon transformation. As the core power generation equipment of the project, the biogas generator unit, with the advantages of efficient conversion and stable operation, converts the biogas generated by the reclaimed water plant into clean electricity, which not only solves the environmental protection problem of biogas emissions, but also provides stable energy for factory production, injecting strong new energy into the green and low-carbon transformation of the capital, and becoming a benchmark case for the utilization of renewable energy.

　　该项目采用热电联产技术，系统构成复杂、专业交叉性强，涵盖沼气收集、净化、储存、输送、发电、余热回收及环保排放等多个环节，而沼气发电机组的高效适配的是项目顺利落地的关键。项目团队针对沼气生物脱硫及硅氧烷去除等核心工艺难点，多次与国内外专业团队交流学习，充分发挥技术集成优势，为沼气发电机组搭建了完善的配套系统，确保机组长期稳定、高效运行，高质量完成项目设计与落地任务。

　　The project adopts cogeneration technology, with a complex system composition and strong cross disciplinary characteristics, covering multiple links such as biogas collection, purification, storage, transportation, power generation, waste heat recovery, and environmental emissions. The efficient adaptation of biogas generator sets is the key to the smooth implementation of the project. The project team has repeatedly exchanged and learned from professional teams at home and abroad regarding core process difficulties such as biogas biological desulfurization and siloxane removal, fully leveraging the advantages of technology integration to build a complete supporting system for biogas power generation units, ensuring long-term stable and efficient operation of the units, and completing project design and implementation tasks with high quality.

　　在能源高效利用方面，沼气发电机组的核心优势得到充分凸显。项目新建4台燃气内燃沼气发电机组，总装机容量达4.8兆瓦，通过精确的负荷匹配与系统集成，可将再生水厂产生的沼气高效转化为清洁电力，直接接入厂区10千伏电网，为再生水处理核心工艺提供稳定能源供给，有效降低了厂区对外部电网的依赖，实现了能源自给自足的绿色发展模式。

　　In terms of efficient energy utilization, the core advantages of biogas generators have been fully highlighted. The project involves the construction of four gas-fired internal combustion biogas generators with a total installed capacity of 4.8 megawatts. Through precise load matching and system integration, the biogas generated by the reclaimed water plant can be efficiently converted into clean electricity, which can be directly connected to the 10 kV power grid in the plant area. This provides stable energy supply for the core process of reclaimed water treatment, effectively reducing the plant's dependence on external power grids and achieving a green development model of energy self-sufficiency.

　　值得关注的是，项目围绕沼气发电机组构建了“热电联产、能效倍增”的运行模式，实现能源梯级利用。配套设置4台0.8吨/小时的余热蒸汽锅炉，充分回收沼气发电机组产生的高温烟气，用于生产蒸汽，服务于污泥热水解处理；同时，对机组的高、低温冷却水进行梯级利用，分别用于厂区采暖与生产补水预热，大幅提升了一次能源的综合利用效率，让沼气能源实现“物尽其用”。

　　It is worth noting that the project has built an operation mode of "cogeneration and energy efficiency doubling" around biogas power generation units, achieving energy cascade utilization. Four 0.8 ton/hour waste heat steam boilers are installed to fully recover the high-temperature flue gas generated by the biogas generator set, which is used to produce steam and serve the thermal hydrolysis treatment of sludge; At the same time, the high and low temperature cooling water of the unit is utilized in a cascade manner, which is used for heating in the factory area and preheating for production water replenishment, greatly improving the comprehensive utilization efficiency of primary energy and realizing the "full utilization" of biogas energy.

　　精细化气体处理设计，为沼气发电机组的稳定运行提供了坚实保障。为避免沼气中的杂质影响机组性能，项目设计了完善的“前处理”与“后处理”系统，前端通过生物脱硫、两级增压与精密干式脱硫，去除沼气中的硫化物等杂质；后端通过尾气脱硝、脱碳处理，严格控制污染物排放，确保废气排放符合《固定式内燃机大气污染物排放标准》相关要求，既守护了生态环境，也为发电机组持续提供“高品质沼气”，延长设备使用寿命。

　　The refined gas treatment design provides a solid guarantee for the stable operation of biogas generators. To avoid impurities in biogas affecting the performance of the unit, the project has designed a comprehensive "pre-treatment" and "post-treatment" system. The front-end uses biological desulfurization, two-stage boosting, and precision dry desulfurization to remove impurities such as sulfides in biogas; The backend strictly controls pollutant emissions through tail gas denitrification and decarbonization treatment, ensuring that exhaust emissions comply with the relevant requirements of the "Fixed Internal Combustion Engine Air Pollutant Emission Standards". This not only protects the ecological environment, but also continuously provides "high-quality biogas" for the generator set, extending the service life of the equipment.

　　在安全与智能化方面，沼气发电机组并网采用“小型发电厂并网”模式，严格遵循分布式光伏发电与并网相关规范，优化设计电气与自控系统，搭建自动化监控平台，部署远程测控设备，强化网络安全防护，实现能源生产全流程数据实时汇集，达成“可视、可测、可控、可调”的智能化管理，既提升了运行安全与管理效率，也为可再生能源系统智能化升级奠定了基础。

　　In terms of safety and intelligence, the grid connection of biogas generators adopts the "small-scale power plant grid connection" mode, strictly following the relevant specifications of distributed photovoltaic power generation and grid connection, optimizing the design of electrical and automatic control systems, building an automated monitoring platform, deploying remote measurement and control equipment, strengthening network security protection, realizing real-time collection of energy production process data, and achieving "visible, measurable, controllable, and adjustable" intelligent management. This not only improves operational safety and management efficiency, but also lays the foundation for the intelligent upgrade of renewable energy systems.

　　小红门再生水厂沼气发电项目的成功并网，充分验证了沼气发电机组在工业领域资源化利用的可行性与优势，契合北京市推动再生水厂沼气循环利用的政策导向。作为绿色低碳转型的核心装备，沼气发电机组不仅能实现沼气的无害化、资源化利用，还能降低企业能源成本、减少碳排放，未来将在再生水厂、工业园区等领域拥有广阔的应用前景，为我国“双碳”目标实现提供重要支撑。

　　The successful grid connection of the Xiaohongmen Reclaimed Water Plant biogas power generation project fully verifies the feasibility and advantages of biogas generator units in industrial resource utilization, which is in line with the policy orientation of promoting biogas recycling in reclaimed water plants in Beijing. As the core equipment for green and low-carbon transformation, biogas generator sets can not only achieve harmless and resourceful utilization of biogas, but also reduce energy costs and carbon emissions for enterprises. In the future, they will have broad application prospects in areas such as reclaimed water plants and industrial parks, providing important support for achieving China's "dual carbon" goals.

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