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木材加工粉尘问题解决方案
1.提出问题
在木材加工厂的锯切与打磨车间,未安装除尘系统时存在以下问题:
1.1. 粉尘污染严重:车间内粉尘浓度高达250 mg/m³,工人健康风险突出。
1.2. 设备磨损加剧:粗颗粒粉尘进入电机和传动系统,导致设备故障率增加30%,年维护成本上约18万元。
2.解决方案
采用多级除尘系统:旋风预分离+脉冲袋式精滤
2.1. 旋风预分离 选用JRS-6.0型旋风除尘器,入口风速18 m/s,处理风量12,000 m³/h,分离粒径≥15μm的粗颗粒,除尘效率85%。
2.2. 脉冲袋式精滤 配置PPC96-8型脉冲袋式除尘器,滤袋材质PTFE覆膜涤纶,过滤精度0.3μm,耐温120℃。
3.实施效果
木材加工厂的锯切与打磨车间加装旋风+脉冲袋式系统综合效益分析表 |
|||||
项目 |
改造前 |
改造后 |
提升幅度 |
节省运营成本 |
|
粉尘排放浓度,mg/m³ |
250 |
≤15 |
环保达标 |
—— |
|
回收木质粉尘,吨/年 |
3 |
20 |
提升5.7倍 |
15 |
|
设备故障率,次/年 |
30 |
5 |
降低83% |
—— |
|
设备维护成本,万元/年 |
18 |
2 |
降低89% |
16 |
|
年综合能耗,万度电 |
0 |
17.5 |
—— |
17.5 |
|
节省运营成本合计,万元 |
13.5 |
||||
改造成本(含设备及改造费用),万元 |
24.5 |
||||
投资回收周期=24.5/13.5*12=21个月 |
|||||
备注:总功率29KW(含空压机)。 |
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