Methanol part 1.zip 115.06KB 20 downloadsI am working on designing a methanol plant.The first half is done in Hysys.The problem is that the Hysys flow sheet is not converging.
I have to cool down the SRF outlet stream from 980 to 70 degrees C and heat up Oxygen and NG gas feed.SO,I used 3 heat exchangers to cool the SRF outlet and heat the O2,NG feed and boil and heat up bottom outlet of Separator S501(almost water).|I also need to get feed NG and O2 to 35 bar from 1 bar so I used compressor-cooler-compressor combination.
I tried the following steps but stil no convergence:
1.Keeping centrifugal compressor outlet temperature below 204 degree C and compression ratio below 7 and adiabatic efficiency upto 85%.
2.I have also set DP for all heat exchangers to zero.
Can you please help me?
I have attached the .hsc file in compressed form for understanding the process. I will be grateful if anyone can kindly help me in this.
Edited by Truth, 29 September 2020 - 06:34 AM.