Mea absorbs CO2 from flue gas
Thread Content
What is the structure of the gas washing process in an absorption tower?
Reply to 1# bpdwn: First, cool the flue gas with water to around 40 degrees Celsius. Then, use a blower to increase its pressure and send it into an MEA absorption tower, where a 20% MEA solution is used to absorb the CO2 in the flue gas. The absorption tower can be either a packed tower or a plate tower; our factory uses a packed tower, which is divided into three sections – the lower two sections are for absorption, while the top section serves as a washing section and is of the bubble column type.
Reply to 2# A Pine: Thank you very much for your help. I have a few more questions on related topics; could you please advise me?
Reply to 2# A Pine: Hello, I saw in relevant literature that there are two stages of absorption, with the lower stage using a semi-poor solution. So, how is the concentration of this so-called semi-poor solution determined? (I’m still a student and there are many things I don’t understand; please forgive me!) ）
Reply to 4# bpdwn Hello! In our process, both the upper and lower sections contain lean liquid; there is no semi-lean liquid. The packing in the absorption tower is quite high, with the height of both the upper and lower sections being 7.2 M.
Reply to 5# A Pine Tree: Ah, I see. Thank you; I’ll ask you if I have any questions, hehe :)
Reply to 5# A Pine Tree: Hello, I’m also a student and I’m working on a competition design. What is the scale of your factory, and what is the flow rate of flue gas it handles? It’s important to reduce carbon dioxide emissions every year. What are the diameter and height of the packed absorption tower? I hope experts can give some advice!
Reply to 7# FigooD: Our CO2 recovery capacity is 160 tons per day. The dry-basis volume flow rate of the flue gas is 54,000 NM3/H, and the diameter of the absorption tower is 3.2 M. The main issue with this process is the difficulty in addressing corrosion when the MEA concentration exceeds 20%; corrosion is also related to factors such as the oxygen content, CO, and S in the flue gas. These issues cannot be explained in just a few sentences – it’s better to look up some relevant information.
Mea’s technology for absorbing CO2 from flue gas is already highly mature, and its design has won numerous awards. If you can design a process for recycling MEA waste fluid (recycler effluent), you will definitely win a big award. A great topic that addresses a major problem for manufacturers. The factory’s MEA waste liquid tanks are now full; it’s urgent. . .
Reply to 2# A Pine: Hello, senior. What kind of solution do you use for cleaning, and what is its concentration?
Reply to 9# tomlhq: Thank you for your suggestion; we will definitely consider it. There is another question here that I would like the experienced person to help answer: I’ve seen in relevant literature that two stages of absorption are used, with a semi-poor solution being employed in the lower stage. So, how is the concentration of this so-called semi-poor solution determined?