Discussion on flare design for ammonia plants using the hydrocarbon steam reforming gas generation process?
Thread Content
Hello, colleagues of all kinds! Natural gas steam reforming is used to produce gas (hydrogen and nitrogen), which is then used, through processes such as shift, decarburization, and methanation, to synthesize ammonia. Since the factories were not designed with front-end flares (emergency emission flares in case of accidents) in the early stages, emissions were directed upward. As environmental regulations have become increasingly strict, the standards have continued to get more stringent. Ammonia synthesis plants that use the gas head process must necessarily install combustion torches for emergency situations! I would like to ask everyone whether process gas containing about 20% water vapor after transformation can be directly sent to the flare, or whether it needs to pass through a separation tank or a water seal tank before being burned in the flare Also, what are the specifications of the separation tank and its separation capacity – how many μm in size can the droplets be separated?
This is quite complex; for your current torch specifications and dimensions, as well as its calorific value, all need to be recalculated. For liquid separation tanks, per the standards, they are capable of separating liquid droplets with sizes of 300–600 μm; generally, a capacity of 600 μm is targeted, which allows for a smaller tank size.
It wasn’t done before, but now it needs to be sent into the torch; before entering the torch, the liquid must be separated, and the diameter of the liquid droplets was mentioned earlier. According to the specifications, a liquid separation tank must be installed every 1000 meters in the utility tunnel.