Painting/Spray Booth Exhaust Waste Heat Recovery

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Project Background

The auto-parts painting line is equipped with a 180°C curing oven, and the exhaust gas was previously discharged directly.

Challenges

Exhaust waste heat was heavily wasted; extra cooling was needed before VOC treatment, adding energy use.

Solution

Install at the drying-oven exhaust:Rotary Heat Exchanger, recovering heat to preheat the combustion air for the drying oven.

Results

Natural gas consumption reduced by 22%, while also reducing the VOC-treatment-stage load, with clear overall benefits.

喷涂涂装废气余热回收

喷涂涂装车间烘干与流平工序排出高温废气，直接排放浪费能源且易超标。转轮式换热器可回收废气热量用于新风或烘房预热，降低天然气消耗；同时需考虑废气中的漆雾与溶剂对芯体的影响，做好过滤与材质选型。

安全与材质

喷涂废气含溶剂，芯体宜选耐高温抗污染材质并配套消防与浓度监测；前端过滤可延长芯体寿命并降低维护频次。

安全与材质

喷涂废气含溶剂，芯体宜选耐高温抗污染材质并配套消防与浓度监测；前端过滤可延长芯体寿命并降低维护频次，保障安全与效率，符合喷涂车间防火规范。

喷涂线连续运行，芯体容尘与可清洁性直接影响维护周期与成本；建议在前端设置高效过滤，并制定定期清洗计划。

建议在前端设置高效过滤并制定定期清洗计划，把芯体容尘与可清洁性作为选型关键项，既保障安全，也把长期维护成本控制到最低，延长设备经济寿命。

必要时可在芯体前后增设压差监测，及时提示清洗，进一步保障系统长效稳定运行与换热效率，降低突发停机风险。