Blanketing also called as ‘padding’ is the process of introducing and maintaining inert gas into the empty space in a storage / process vessel.
This is done by providing a way of allowing the blanketing gas into the system and another way to vent the gas for avoiding over pressurization of storage / pressure vessel.
Safety :
In Petro-chemicals, Refineries, Chemical or Pharmaceutical Plants, the major concern is safety. Fuels / Solvents require Oxygen for combustion and Inert Gas Blanketing avoids the contact of stored liquid with atmospheric oxygen. The presence of layer of Inert Gas on top of liquid level avoids the entry of atmospheric air and in turn oxygen and addresses the major concern of safety.
Saving :
Apart from safety, cost saving is a major advantage of blanketing in all industrial segments. Presence of positive pressure on liquid level in void vapor space, reduces the evaporation of liquid due to change in temperature and during the pump-in operation. This results in considerable cost saving in case of volatile costly Fuel Oils and other costly liquids.
Also, following advantages are noted due to effective blanketing :
TANK BLANKETING
Also, following advantages are noted due to effective blanketing :
Tank blanketing system comprises of following components :
R019 Series Balanced Pressure Relief Valve – Bellow Type A balanced pressure relief valve is a spring loaded pressure relief valve, which incorporates a bellow or other means of
R020 Series Pilot Operated Safety Relief Valves A Safety Relief Valve, in which the major relieving device or main valve is combined with and controlled by a self actuated auxiliary