Degassing technologies

Degassing technologies of various type may be used to speed up process by increasing the level of agitation , improving the efficiency of vapor / liquid contact and via addition of a catalyst to promote Reaction.However,even without a special degassing process , H2S will be released into the vapor space of rundown container and if not removed can accumulate and potentially from flammable mixture with air.The lower and upper flammibility limit ( LFL) of H2S in air at 135°c are 3.3 mol% and 50.4%.
Therefore , the rundown storage system must be designed to avoid this potentially flammable mixture, as well as possible ignition sources during normal operation and maintenance activities.
Standard on Explosion prevention systems, describes systems for the prevention of explosions in enclosures that contain flammable concectrations of gases, vapor mists , dusts or hybrid mixtures, These systems fall into six general prevention or control methods:
1) Deflagration prevention by oxidant concentration reduction
2)Deflagration prevention by combusible concentration reduction
3)Deflagration prevention by hot particle detection and intervention systems
4)Deflagration control by supperssion
5)Deflagration control by isolation
6)Deflagration control by pressure containment.