Let’s talk about pressure swing adsorption
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Our plant’s pressure swing adsorption design calls for a capacity of 30,000 cubic meters, but in practice the actual capacity never exceeds 20,000 cubic meters, and it’s also difficult to maintain this level of capacity over long periods of time – which is quite a problem. Especially when the company tries to increase the production of liquid ammonia, the adsorption process fails to handle the increased flow rate, which is really frustrating. How is the situation at other plants? Could anyone share their experiences?
Our unit is designed with a pressure swing adsorption system having a capacity of 70,000 Nm³/h; in actual operation, it has exceeded this design capacity yet still performs well.
There must be something wrong. Check it carefully.
In pressure swing adsorption systems, a low pressure absorption pressure often results in reduced processing capacity; this issue also occurs in pressure swing adsorption systems that do not have segmented design. Additionally, there are problems related to programmable valves.
How many years has the device owned by the original poster been in use? Under normal circumstances, it should be disassembled and the adsorption tower checked every 2-3 years. If it is found that the wear of the adsorbent has decreased, it must be replenished immediately; otherwise, it is normal for its capacity to fall below the designed level.
Where was yours designed? There must be a problem; several units I’ve seen are operating under overload conditions yet still function properly. It is recommended to get in touch with Mr. Hu Hongpin from Hangzhou Dongan Technology Co., Ltd. After talking with him, I found that he has excellent technical skills and a great approach to providing services. Phone: 13917052588 Email: hangzhoudongan@163.com
1. Check the performance of the adsorbent. 2. Check whether the programmable control device is operating properly. 3. Check whether the process parameters are normal, especially the desorption pressure
Reply to 2# Yan Qiusheng: Where was your pressure swing adsorption system designed?
Reply to 8#: After all hardships, success comes. It was designed by West China Company in Chengdu; aside from the pressure vessels for stationary equipment and the adsorbents, which are under our responsibility, everything else is handled by them.