大豆预处理车间除尘风网及防燃、防爆措施

大豆预处理车间的粉尘分为干式粉尘和湿式粉尘。粉尘易引起设备故障和车间污染,在限定空间和条件下会发生粉尘阴燃、起火甚至爆炸，给安全生产带来隐患。针对这些问题，根据大豆预处理工艺和设备的特点设计除尘风网和工艺风网。对大豆预处理车间的除尘风网和工艺风网进行了介绍。为减少含尘气体排放，除尘风网采取循环风设计，对可能出现阴燃、起火的溜管、弯头、设备的下料接管积尘处，以及可能出现粉尘爆炸的筒仓进行防燃、防爆和抑爆处理。通过对4 000 t/d 大豆压榨厂含尘气体排放实测表明，预处理车间的风网运行稳定，实现了安全和清洁生产。

Dust-removing ventilation network and fire-proof, explosion-proof measures for soybean pretreatment workshop

The dust in the soybean pretreatment workshop is divided into dry dust and moist dust, which is easy to cause equipment failure and workshop pollution. Under confined space and conditions, the dust can produce smoldering, fire or even explosion, which brings hidden dangers to safe production. In view of these problems, according to the characteristics of soybean pretreatment process and equipment, dust removal ventilation network and process ventilation network were designed. The dust-removing ventilation network and process ventilation network in soybean pretreatment workshop were introduced. In order to reduce the emission of dusty gas, the dust-removing ventilation network adopted the design of circulating air.The fire-proof treatment should be carried out at the dust collection place of chut, elbow and pipe links where smoldering and fire might occur, and the explosion-proof and explosion-supression measures should be taken for the silos where dust explosion might appear. The actual measurement of the dust-containing gas emissions of the 4 000 t/d soybean crushing plant showed that the ventilation network of the pretreatment workshop was stable, and the safe and clean production was achieved.