Nitrogen plant for oilfield booster compressor station
Application of nitrogen membrane plant:
Production of 99% nitrogen for subsequent delivery to the distribution network for extinguishing oil fire-heating furnaces and generation of nitrogen blanket in oil tanks.
Grasys performed the complete package of works:
Development of design and detailed documentation;
Equipment manufacture and supply;
Installation supervision and commissioning.
The plant is installed in a stand-alone building together with process equipment, process piping, shutoff and control valves and instruments, automation equipment, heating and electric lighting systems.
Configuration of nitrogen membrane plant:
The inert gas plant (continuous nitrogen production) rated for 100 nm³/hr including two process lines for nitrogen production.
The inert gas plant (intermittent nitrogen production) rated for 2,050 nm³/hr including process lines for nitrogen production.
Characteristics of product nitrogen:
Nitrogen volume ratio: minimum 99%;
Oxygen volume ratio: maximum 1.0%;
Gas temperature at the unit output:: maximum +45°C;
Nitrogen dewpoint temperature: maximum 60°C.
Automatic control system GRASYS Intelligent Control-7 for:
Automatic and current (manual) plant start/stop and warm-up control;
Visualization of plant operation;
Remote alarm system signaling indoor air temperature deviations;
Remote alarm system signaling unauthorized entering the premises;
Remote control of voltage on distribution board' terminals;
Opportunity for information display for transfer to high-level ACS;
Sending control commands to actuators (in case of power outage) for switching-over to fail-safe mode;
Actuation of emergency ventilation (with alarm signal) in case of oxygen volume ratio in unit air getting under 19% or over 23%.