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FUEL GAS CONDITIONING SKIDS |
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Thermosystems undertakes design, detailed engineering, manufacture and supply of complete Fuel Gas Conditioning Skids for treating gas received from Wells or Gas Gathering Stations for use in Gas based Power Plants, Reformers or for any other applications. |
Fuel or Feed gas, as received from Wells or Gas Gathering Stations (GGS) contains various impurities like moisture, condensates, dust particles etc and is at different temperatures and pressure conditions than those required for power generation or in other processes.
The purification of gas to the required level and bringing it to the required temperature and pressure inlet to the turbines or a process is called Conditioning of gas.
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We have a technical tie-up with a renowned international company experienced in design, fabrication and commissioning of Gas Conditioning Skids, Fired Heaters and Indirect Water Bath Heaters.
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SCOPE OF SUPPLY
- KNOCK OUT DRUM (KOD):
Any free moisture present in the gas is removed in the Knock-out Drum.
- PRESSURE REDUCTION SKID:
The pressure is reduced to near the required pressure by passing the gas through pressure reduction station. As the pressure is reduced there is cooling of gas due to Joule Thomson effect. This causes the precipitation of moisture as well as hydrocarbon condensates. These are separated in condensate separators just as the knock out drum. The condensates are either collected or disposed off.
- INDIRECT BATH HEATERS/ELECTRICAL HEATING SKIDS:
As the temperature falls below the dew point, the gas requires heating. This is done in either "Indirect Water Bath Heaters (IDBH)" or "Electrical Heaters". However the priority is to use Indirect Bath Heaters because of their safe operating design. Electrical Heating Skids are used for low capacity plants.
- SCRUBBER SKIDS:
Multi-cyclone scrubbers are used for removing moisture up to 10 micron level. The dust particles are also removed to some extent.
- FILTER SEPARATORS:
The gas is further passed through cloth filters or cartridges. Very fine cloth made of polyethylene or other special materials like fiber glass is used to filter out particles less than 3 microns.
- PRESSURE REGULATION SKID:
Finally the pressure is brought to the desired level through pressure regulation system which, consist of Pressure Regulating valves.
- GAS METERING SKID:
The metering has to be exact & accurate. For this special type of flow meters like Coriolis or Ultrasonic flow meters are used.
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The skids are supplied complete with required instrumentation, valves and piping ready for installation at site and commissioning after hooking up with rest of plant at battery limits. |
CODES AND STANDARDS USED
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Pressure Vessel Design : ASME Sec VIII Dn 1
IDBH Design : API 12K
Hazardous Area classification : OISD-113
Pressure relieving & Depressurization : API RP 521
Chemical & Refinery Piping : ASME B 31.3
Pipe flange & fitting : ASME B 16.5
Prevention of corrosion cracking in CS : NACE-MR-0472
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