Shell and tube heat exchanger
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Cold source: Hydrogen from the cold box. Composition: H2: 95.4 %, CH4: 3.79 %, C2H6: 0.37 %, C2H4: 0.06 %, C3H8: 0.16 %, C3H6: 0.13 %. Flow rate: 1400 kg/h. Temperature: 35°C. Pressure: 0.23 Mpa. Heat source: Hydrogen coming from the drying tank; its composition contains 1500 ppm of H2S and a small amount of water (which can be ignored)； Flow rate: 1400 kg/h, Temperature: 210°C (calculations are based on this temperature) ； Pressure: 0.4 Mpa. The heat source temperature is reduced to 46°C; 19-mm pipes are used, with a length of 6 m. I want to use a shell-and-tube heat exchanger, but there are always errors. The output size is too large as it involves 13 heat exchangers connected in series; can something be changed to optimize the setup?
:Why is there no one? The result obtained using htri simulation shows 13 shell-and-tube heat exchangers connected in series, with a heat transfer area ratio of 365%; please solve this
Based on the data, the use of multiple stages in series for this gas heat exchanger results in a large temperature difference between the hot and cold streams. The exit temperature of the hot gas is 46 degrees, which is too close to the inlet temperature of the cold gas. If the process permits, it is recommended to increase the exit temperature of the hot stream.
Thank you **, for providing an idea; it’s great. I’ve learned something from it :victory: