Chemical explosion suppression system is designed to provide an active method to protect process system equipment from a dust or gas explosion hazard. The fundamental operation of the system is detection of the pressure rise during the initial stage of an explosion, followed by fast injection and homogeneous distribution of an extinguishing agent into the protected vessel. The chemical suppression system consists of a controller, pressure or optical detectors, and the high rate discharge (HRD) bottles. As a deflagration develops, the pressure inside the vessel will begin to build rapidly. The pressure detector will detect the rate of pressure rise over a certain time period and activate the High Rate Discharge bottles. Once activated, the HRD bottles will disperse suppressant into the protected vessel inhibiting the explosion from further developing, thus reducing the pressure and preventing any vessel breach.
Explosion suppression systems can be used on a variety of processes and process equipment. The main uses of suppression systems can be listed as follows;
Chemical suppression systems are active protection systems that safeguard process equipment against dust explosions. They detect the pressure rise in the earliest stage of an explosion and, within milliseconds, inject a suppressant agent into the protected enclosure, extinguishing the explosion before it can develop.
A chemical suppression system consists of three main components: a controller that manages the system, High Rate Discharge (HRD) suppressors that rapidly release the suppressant chemical into the enclosure, and sensitive pressure or optical detectors that sense the initial ignition or pressure rise.
These systems have an extremely fast response time. From the moment of ignition, detectors sense the explosion within just 5 to 35 milliseconds. By the 40th millisecond (0.04 seconds), suppressant injection begins from the HRD suppressors, and the explosion is fully suppressed within an average of 60 milliseconds.
These systems are used across most high-risk industrial processes. Key application areas include pneumatic conveying equipment, dust collectors, cyclones, bucket elevators, silos, mills, crushers, mixers, atomizers, and spray and fluid bed dryers.
This tested and approved technology offers advantages such as suitability for both indoor and outdoor use, compatibility with toxic materials, and an extremely fast reaction time. It also offers food-industry-approved suppressant agent options, can archive detector data, and its components can be easily replaced after activation.
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