When conveying media containing flammable gases or combustible and explosive dust, the design of the dust removal system pipeline should adopt the following explosion-proof measures.
Enhance the detection and control of flammable material concentrations.
To prevent the concentration of combustible substances in the pipeline system from reaching an explosive level, it is necessary to install detection equipment to regularly monitor the system's operational status and enable automatic alarms. During the design of the system's air volume, in addition to meeting purification requirements, the concentration of combustible substances should also be verified. If necessary, increase the designed air volume to ensure that the concentration of combustible substances in the transported gas is below the lower explosive limit.
Eliminate ignition sources
Strict control over potential ignition sources that could cause explosions. Use explosion-proof fans and adopt direct or shaft coupling transmission methods; utilize explosion-proof electrical components, switches, and motors; remove iron filings and other foreign matter before materials enter the system.
Fire Retardant and Explosion Relief Measures
When designing combustible gas pipelines, the flow rate inside the pipe should be greater than the flame propagation speed during gas combustion to prevent flame spread; install fire arresters with multiple layers of metal mesh or gravel on the pipeline; install explosion relief holes or doors at local points (dead ends) in the pipeline system; the water seals and overflow water seals used in the gas pipeline also play a certain role in explosion relief.
Equipment Airtight
When dust collector pipes and equipment are not sealed properly, combustion and explosion may occur due to air leakage or the release of flammable materials. Therefore, it is essential to ensure the airtightness of the equipment system.
Facility Ventilation
It is impossible to achieve an airtight pipeline system, thus, it is necessary to enhance the ventilation in the factory to ensure that the concentration of combustible materials within the workshop does not reach a hazardous level. Moreover, for workshops that may emit a large amount of flammable gases due to accidental equipment failure or system operation malfunctions, an emergency exhaust ventilation system should be installed for immediate use.
