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Thank you all for your responses. My senior has asked me to explore the possibility of using a full flange flat head instead of an ellipsoidal or hemispherical head. The reason given is that there is just one nozzle on the head, and its size is less than half the size of the vessel. Given this...

Hi. I am designing a pressure vessel whose design pressure is >90 barg. There are some internals inside the vessels hence inspection is required. I cannot install a manhole because the shell ID < 1000 mm. Can I provide flanged head? And what type of head? Ellipsoidal or spherical?

Hi, is it allowable to opt for 4 tube passes (U-tube) in an exchanger with TEMA D type front head (High pressure gas). The vapor fraction inlet/outlet tube side is: 100/92 percentage respectively.

Could you kindly explain the advantages of using SS316L even when the water is already clean?

Hi, I want to confirm whether TEMA G shell can be used for liquids flowing in shell side.

Hi, I want to know whether carbon steel tubes are suitable for an heat exchanger to handle demineralized water flowing in shell side in closed loop, i.e., the demineralized water does not contact with air. Assuming tube side fluid is non-corrosive.

Thank you, Christine and Littleinch, for helping me out.

CS stands for Carbon steel. Sorry for not mentioning clearly.

For any heat exchanger design (pressure < 50 barg) I consider tube thickness of 2.11 mm for CS and 1.65 mm for SS. As per my understanding 2.11 - 1.65 = 0.46 mm is extra thickness for CS as corrosion allowance. Is my understanding correct?

George, I also received an answer to this query from another source. Steam inlet to SMR is also used for the shift reaction (CO + H2O ---> CO2 + H2). So CO concentration should be included but not CO2.

Thanks George

For calculating the steam/carbon ratio at the inlet of a steam methane reformer, should CO and CO2 concentrations be included?

Hi, Thank you everyone. I understand that CS is not suitable for my case. I am opting for SS316L instead.

Hi, I am designing a cooler with open recirculating tower cooling water as cooling media. Tube side fluid is cooling water. The maximum chloride content of cooling water is 500 wt ppm. I have selected carbon steel as tube material. Client has raised concerns whether I can guarantee 10 years...