Issues regarding the potassium-alkali decarbonization system for synthetic ammonia phenylpyrrole
Thread Content
I’m a beginner and have only been working with synthetic ammonia for a short time. However, from the Internet as well as from my classmates and colleagues, I’ve learned that there are quite a number of synthetic ammonia systems that use phenol-thermal potassium-alkali decarburization, but many problems also arise in such systems. Small impacts cause slight fluctuations in the system, while larger impacts require stopping the operation to replace the solution. . . . . . Decarbonization has become the bottleneck determining the quality of the entire system! ! ! ! I searched on the forum, but couldn’t find any discussions about it, so I’m raising the question again. I hope experts can give me some guidance. How to resolve and stabilize the system? ? ? ? ? ? For example: The system solution tends to foam easily, and a large amount of antifoaming agent is required – how can this be improved? (Does using too much antifoaming agent have a significant impact on the system?) ； With the use of system activators, do ordinary activators change within the system, forming other substances that could affect the system? ； Experience in the control and removal of chloride ions and iron ions in the system. . System thermal load control: what level is appropriate? What are the hazards if it’s too high or too low? There are so many questions; I can’t list them all. I hope those who are more experienced will share their knowledge with us~~~~~~~
I would like to know about such issues too; I’m just starting to work with ammonia synthesis purification systems and am quite confused:funk: :funk:
This is a problem that everyone involved in ammonia synthesis encounters; one needs to calm down and study the ammonia synthesis process systematically. Recommended book*: \"Hydrocarbon Conversion Methods – Ammonia Synthesis Production Process\", edited by Yuan Yi. This book is essential for ammonia synthesis plants; there’s also an electronic version on the forum!
In short, the situation varies from factory to factory, so it’s not possible to make generalizations: The system solution tends to foam easily, requiring large amounts of antifoaming agents; the solution is dirty and contains many foaming substances, such as oil residues； How to improve it: Increase filtration. Adding too much defoamer has a significant impact on the system; the effect is severe, and it can even lead to the shutdown of the system, as the absorption capacity becomes very poor when there is no foaming at all in the solution. Regarding the use of activators in the system, do ordinary activators change within the system and produce other substances that affect the system? Activators will definitely decompose, but the decomposition products should not have a serious impact on the system ； Experience in controlling and removing chloride and iron ions in the system: The lower the chloride level, the better; it is primarily related to the quality control of water and steam ； High iron ion levels indicate severe corrosion; it is necessary to check for pump cavitation, the level of corrosion inhibitors, etc. The thermal load of the system should be controlled appropriately – too high or too low can both cause problems: the level should be sufficient to meet the requirements for carbon removal, absorption, and regeneration; too high a level leads to waste and increased corrosion
Let’s continue discussing this issue. Keeping an eye on it...
Who uses it anymore? It’s been phased out!