CO2 reciprocating compressor

Operation of  CO2 compressor

CO2 reciprocating compressor

reciprocating compressor

CO2 reciprocating compressor

CO2 reciprocating compressor
Reciprocating compressor start - up

         Start– up :-


1. Keep suction valve open, 4th stage discharge valve close, 4th stage vent valve and 4-1 by pass valve open

2. Open cooling water to cylinder jackets, oil cooler, 1st and 2nd stage inter cooler

3. Start the lubrication oil pump adjust pressure to 2.5 to 3kg/cm3

4. Set the turning gear and start barring moter – barring time to 2 minutes

5. Start main moter check abnormal sound in frame cylinder, valve chamber, check bearing temperature, check pressure of each stage and vibrations.

6. Close the drain valve of cylinders from the low pressure side .

7. Close the clearance valve of 1st ,2nd and 3rd stage, starting from the high pressure side.

8. Close gradually 4-1 by pass valve for loading up the compressor. When 4th stage gas temperature goes above 40 C , open C.W. in 3rd stage cooler.

9. Close gradually the 4th stage blow valve and raise the pressure slouly checking the gas temperature of each stage when the pressure has reached higher than the reactor pressure open 4th stage discharge valve and open CO2 inlet valve to reactor close the 4th stage blow valve.

10. In case of CO2 start supply, pressurisation is done by 4-1 gas circulation.
       

      SHUT – DOWN :-


• Start high pressure fooding pump and inject water in to reactor CO2 gas line.

• Gradually close the 4th stage discharge valve and simultanciuly gradually open the 4th stage blow valve maintaing ,4th stage discharge pressure at 230 kg/ cm3 .

• Close the CO2 inlet valve to reactor and stop high pressure flooding pump.

• Open 1-1 by pass valve.

• Switch off the main moter.

• Open each stage clearance pocket valve and drain valve.

• If necessary, close the suction valve.


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