Safety is"One"，without"One", everything is zero
Explosive dust properties:Dust explosions often occur in production and processing sites accompanied by aluminum powder, zinc powder, aluminum processing grinding powder, various plastic powders, intermediates of organic synthetic drugs, wheat flour, sugar, wood chips, dyes, bakelite ash, milk powder, tea powder, tobacco powder, coal dust, plant fiber dust, etc.
Three conditions are required for a dust explosion:
1. Dust concentration in air reaches explosive limits (typically focusing on the lower explosive limit);
2. Presence of an ignition source with sufficient energy;
3. Adequate air or oxygen mixture.
General explosion protection technologies include preventive measures (e.g., maintaining dust concentration below explosive limits and eliminating ignition sources) and design measures (e.g., explosion resistance, suppression, isolation, and venting to mitigate hazards).
Explosion resistance measures:Structures withstand explosion pressure without rupture. Explosion-resistant designs comply with pressure vessel standards, with impact resistance typically 1.5× static pressure tolerance.
Suppression measures:Extinguish explosions at early stages. Intelligent systems activate at 1×10⁴Pa, limiting pressure below 1×10⁵Pa. Includes passive (e.g., water bags) and active (sensor-controlled PHRD devices) methods.
Explosion suppression can be divided into two types:one is passive type, such as water bags and flame-retardant powder devices. These devices will automatically rupture and release water or flame-retardant powder when the explosion pressure rises to a certain range. The other type is an intelligent explosion suppression device composed of an initial explosion detection sensor, a control unit and a high-pressure-driven rapid spray (PHRD) suppression device.
Venting measures:Venting measures: Use explosion panels or flameless venting systems to release pressure safely.
Full-system explosion protection:MX Series sintered plate dust collectors are EXT4 certified.
