汽车涂装废气成分复杂、工况波动大，汽车涂装生产废气处理设备故障呈现多环节、连锁性特征，核心故障可归纳为三类，每一类都直接影响净化效率与生产合规。净化效率骤降：核心处理单元失效。吸附脱附系统是处理VOCs的核心，当活性炭吸附剂饱和、脱附温度失控时，吸附能力大幅下滑，废气中的VOCs无法有效截留，排放浓度超标。过滤系统则因漆雾颗粒、粉尘长期附着，滤材堵塞、破损，导致废气穿透率上升，不仅净化效果打折，还会加重后端处理单元负荷。此外，催化燃烧装置的催化剂失活、燃烧温度不足，会使VOCs无法充分分解，净化效率跌破设计标准，成为环保达标的核心隐患。

The composition of exhaust gas from automobile painting is complex and the working conditions fluctuate greatly. The faults of exhaust gas treatment equipment in automobile painting production show multiple links and chain characteristics. The core faults can be classified into three categories, each of which directly affects purification efficiency and production compliance. Purification efficiency drops sharply: core processing unit fails. The adsorption desorption system is the core for treating VOCs. When the activated carbon adsorbent is saturated and the desorption temperature is out of control, the adsorption capacity decreases significantly, and VOCs in the exhaust gas cannot be effectively intercepted, resulting in excessive emission concentration. The filtration system, due to the long-term adhesion of paint mist particles and dust, causes blockage and damage to the filter material, resulting in an increase in exhaust gas penetration rate. This not only reduces the purification effect, but also increases the load on the back-end processing unit. In addition, catalyst deactivation and insufficient combustion temperature in catalytic combustion devices can prevent VOCs from fully decomposing, resulting in purification efficiency falling below design standards and becoming a core hazard for environmental compliance.

系统运行卡滞：动力与传动环节故障。风机是废气输送的“心脏”，长期输送含腐蚀性成分的废气，叶轮易磨损、轴承易锈蚀，导致风量不足、振动加剧，废气无法稳定输送至处理单元。管路系统则因漆雾沉积、杂质堆积，出现堵塞、泄漏，废气输送受阻，不仅降低处理效率，泄漏的废气还会污染车间环境，威胁人员健康。喷枪、雾化装置等部件的喷嘴堵塞，会导致药剂无法均匀喷出，影响废气与药剂的接触效果，进一步削弱净化能力。

System operation stuck: power and transmission link failure. The fan is the "heart" of exhaust gas transportation. It transports exhaust gas containing corrosive components for a long time, and the impeller is prone to wear and the bearing is prone to rust, resulting in insufficient air flow and increased vibration. The exhaust gas cannot be stably transported to the treatment unit. The pipeline system is blocked and leaked due to paint mist deposition and impurity accumulation, which not only reduces treatment efficiency but also pollutes the workshop environment and threatens personnel health. Blockage of nozzles in spray guns, atomization devices, and other components can cause uneven spraying of chemicals, affecting the contact effect between exhaust gas and chemicals and further weakening the purification ability.

控制系统失灵：智能管控失效。传感器是设备的“感知神经”，长期暴露在腐蚀性废气中，易出现零点漂移、元件老化，导致浓度、温度、压力等关键参数监测失真，控制系统无法精准调节设备运行状态。线路老化、接头松动，会造成信号传输中断，风机、加热装置等设备无法按需启停，严重时引发设备停机。此外，控制系统的程序紊乱、参数设置错误，会导致设备逻辑混乱，无法匹配涂装生产的废气排放节奏，陷入运行失控状态。

Control system failure: Intelligent control failure. Sensors are the "sensory nerves" of devices, and long-term exposure to corrosive exhaust gases can lead to zero drift and component aging, resulting in distorted monitoring of key parameters such as concentration, temperature, and pressure. The control system cannot accurately adjust the operating status of the equipment. Aging of the circuit and loose joints can cause signal transmission interruption, and equipment such as fans and heating devices cannot start and stop as needed, which can lead to equipment shutdown in severe cases. In addition, program disorder and parameter setting errors in the control system can lead to equipment logic confusion, inability to match the exhaust emission rhythm of painting production, and fall into a state of out of control operation.