Synthetic ammonia vent stack ground flare
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Dear experts, is it necessary to discharge the emergency vent gases from ammonia synthesis plants into an overhead flare tower? If it is absorbed through thorough washing, is it okay to discharge it via a ground flare? If a low-temperature ammonia tank is added, how should it be configured? Elevated torches require a lot of space, and the land available for this project is truly insufficient :(
Ammonia flares must be installed at a high elevation; what if a ground flare fails to ignite and causes an ammonia leak?
It turns out that what was known was all about the elevated structures; the torch radiation actually covers a large area
In an elevated setup, there is a risk of ignition failure; even with a water washing system in place, will it be sufficient to handle emergency situations?
According to GB50150-2008 (2018 edition), “5.5.15 Liquids, combustible gases with low calorific value, combustible gases containing oxygen or halogen elements and their compounds, combustible gases with extremely high or high toxicity, inert gases, acidic gases, and other corrosive gases shall not be discharged into the plant-wide flare system; separate emission systems or systems for treating such emissions must be installed.” ”Ammonia is a highly toxic gas and should be absorbed before being released separately ； It is usually emptied after being washed with water; the outlet of the emptying pipe should be equipped with an ammonia concentration detector, and the value detected by this detector should control the make-up water valve. The discharge height shall comply with the requirements specified in clause 5.5.11 of these standards!
The elevated torch features multiple redundancy measures to prevent ignition failure; firstly, there are 3 perpetual lights responsible for ignition； Second, there are 3 ignition methods: high-altitude ignition, ground ignition, and forced manual ignition.