沼气发电是一种较好的粪污沼气处理方法，它可以将粪污转化为新型能源并减少对环境的污染。但是对沼气发电机组尾气排放也需要达标处理。针对该粪肥沼气发电机组实际工况和特点，中拓结合多年内燃机尾气治理的经验，并从投资成本、运行安全性等方面考虑，采用一台机组对应一台脱硝设备的设计方案。包括主体脱硝设备及其辅助装置生产、工厂检验、包装、运输、调试、培训和售后服务等一系列内容。最终粪肥沼气发电机组尾气净化脱硝项目交付使用并达标运行，在机组满足NOx原始排放值≤500mg/Nm’(5%02)，温度范围在484°-512°的排放条件下，实现NOx≤50mg/Nm3(5%含氧量）的目标排放要求。

　　Biogas power generation is a preferred method for treating fecal biogas, as it converts feces into a new form of energy while reducing environmental pollution. However, the exhaust emissions from biogas generator sets also need to meet emission standards. Based on the actual operating conditions and characteristics of this manure biogas generator set, Zhongtuo, leveraging its years of experience in internal combustion engine exhaust gas treatment, and considering investment costs and operational safety, has adopted a design scheme where one denitration device is paired with one generator set. This includes a series of processes such as the production, factory inspection, packaging, transportation, commissioning, training, and after-sales service of the main denitration equipment and its auxiliary devices. Ultimately, the manure biogas generator set exhaust gas purification and denitration project was successfully commissioned and operated in compliance with standards. Under emission conditions where the original NOx emission value of the generator set is ≤500mg/Nm? (5% O2) and the temperature range is between 484°C and 512°C, the target emission requirement of NOx≤50mg/Nm? (5% oxygen content) was achieved.

　　中拓的万纯SCR脱硝系统可满足不同温度使用环境，选用燃气机组专用脱硝催化剂以满足发电机各种工况使用要求；烟气混合系统配合精密的尿素量计算控制系统，使整套脱硝系统达到有效的尿素溶液喷射状态，可以更好地与尾气充分混合，大幅度提高反应效率。整套脱硝系统具有安全可靠、背压小，非常大限度地减少了脱硝设备对内燃发电机组的影响；同时安装位置合理，占地面积小，且保养、维修方便。

　　Zhongtuo's Wanchun SCR denitration system can meet different temperature operating environments. It utilizes denitration catalysts specifically designed for gas turbine units to meet the various operating requirements of generators. The flue gas mixing system, coupled with a precise urea quantity calculation and control system, enables the entire denitration system to achieve effective urea solution injection, allowing for better mixing with the exhaust gas and significantly improving reaction efficiency. The entire denitration system is safe and reliable, with low back pressure, greatly reducing the impact of denitration equipment on internal combustion engine generator sets. Additionally, the installation location is reasonable, the footprint is small, and maintenance and repair are convenient.

　　此外，沼气发电机组尾气净化系统选取可编程控制器PLC作为脱硝系统的自动控制装置并将各种辅助控制集成编译，具有体积小、组装维护方便、可靠性高和抗干扰能力强等特点，使运行维护人员数量大幅减少；控制系统还可与上位机通讯，便于远程集中监测污染物排放数据；其中的人机界面系统，可实时显示脱硝状态数据，烟温状态，尿素用量等情况，还可对脱硝系统进行远程控制并对之前的数据进行统计记录，且控制柜配有触摸屏，便于运行人员平视操作，进行观察和监视，维护便捷简单，同时支持远程通信和集成管理。

　　In addition, the biogas generator set exhaust gas purification system selects a Programmable Logic Controller (PLC) as the automatic control device for the denitration system and integrates various auxiliary controls, featuring small size, convenient assembly and maintenance, high reliability, and strong anti-interference capability, significantly reducing the number of operation and maintenance personnel. The control system can also communicate with the host computer, facilitating remote centralized monitoring of pollutant emission data. The human-machine interface system can display denitration status data, flue gas temperature status, urea consumption, etc. in real time, and can remotely control the denitration system and statistically record previous data. The control cabinet is equipped with a touch screen, facilitating eye-level operation for operators, observation, and monitoring, making maintenance convenient and simple. It also supports remote communication and integrated management.

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