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喷砂房除尘系统设计及测试分析
Design and Test Analysis of Dust Removal System in Sandblast Room
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- DOI:
- 作者:
- 章基法 刁永发 沈恒根
ZHANG Jifa;DIAO Yongfa;SHEN Henggen
- 作者单位:
- 东华大学环境科学与工程学院
College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China
- 关键词:
- 喷砂房 送排风循环 零排 测试
sandblasting room air supply and exhaust circulation zero discharge test
- 摘要:
- 落砂工部在喷砂过程中产生大量粉尘,若处理不当,对车间空气品质和工人身心健康影响很大,成为主要污染源。以实际除尘系统改造为案例,通过取消常见的排气烟囱,将净化除尘后的气体重新送入喷砂房,形成送排风循环,进而达到零排,并对系统进行现场测试。结果表明:改造后系统每月空气使用量减少60.00%~95.83%,每月的粉尘排放量为7.01~16.96 kg,减少96%以上;喷砂房四周底部粉尘浓度PM2.5平均值为77.6μg/m3,低于车间外界浓度80μg/m3,运行良好。A large amount of dust was produced in the process of sand blasting by the falling sand Department. If it was not handled properly, it would have a great impact on the air quality of the workplace and the physical and mental health of workers, thus becoming the main source of pollution. Taking the transformation of the actual dust removal system as an example, by eliminating the common exhaust chimney, the gas after the dust removal was re-sent to the sandblasting room,forming the air supply and exhaust circulation, and then reaching zero row, and the system was tested on the spot. The results show that the monthly air usage of the modified system is reduced by 60.00% ~95.83%, and the monthly dust emission is 7.01~16.96 kg, reducing by more than 96%. The average dust concentration of PM2.5 at the bottom of the sandblasting room is 77.6 g/m3, lower than the concentration outside the workshop of 80 g/m3, which is in good operation.