PSA problem solving

This post was last edited by dugutianzuo5 on 2011-11-24 at 16:01. Why was it posted in this section? There is a “membrane PSA” separation category under the general section, so there are many people who work with PSA. My device was originally designed for 0.7 MPa; feeding can begin once the adsorption pressure is increased to 0.55 MPa, with the other pressures following the corresponding sequence. For your installation, with 3 towers operating simultaneously, the raw gas should not contain a high level of hydrogen. It’s unclear how many times pressure equalization is required; the key is to ensure that the final pressure after equalization is around 0.1 MPa – it cannot be too low, as this would prevent impurities from penetrating the bed layers. In particular, it becomes difficult to regenerate molecular sieves once they have absorbed liquid components. When switching to a smaller number of towers, the space velocity increases, the cycle time for each tower shortens, the purity of the product decreases, and the hydrogen production volume drops. But one question: is it still 3 towers in operation? Please provide the device load and raw gas composition so that a better analysis can be conducted. In other words, post it in the PSA section so we can get more responses. Or the moderators can help.

Your device does not have high requirements for hydrogen purity. After cutting off the catalyst, pay attention to the furnace temperature, as well as the purity and flow rate of hydrogen, as well as any fluctuations in the purge gas. After cutting, it becomes 9_2-5 or 9-3-4, which is related to the program settings