Linde cryogenic methanol wash
Thread Content
The most important aspect of low-temperature methanol washing is the operation of the methanol-water separation tower. That master has experience in this area; he’d like to share it.
The methanol water tower should have three feed levels. At the beginning of operation, due to the water circulation in the system, the displacement is not complete; when the water content in the system is high, the lowest feed level is usually used. During normal operation, the middle feed level is generally employed. The specific choice still depends on the water content in one’s own system.
“The most important aspect of low-temperature methanol washing is the operation of the methanol-water separation tower” — if this is also important, then I really don’t know what isn’t important!
The methanol water washing tower is designed to reduce the water content in the system and the methanol content in the wastewater of low-temperature methanol washing units. It has three feed streams, from top to bottom: 1) the reflux methanol from the top of the methanol-water separation tower, supplied by the depleted methanol after system regeneration ； 2) The second feed is the methanol sprayed in the low-temperature methanol washing process, which contains a small amount of water along with the process gas ； 3) The wastewater from the exhaust gas scrubber is mainly water.
Could everyone have a good exchange of ideas? It’s also a way to share your thoughts and opinions! ! ! !
As mentioned upstairs, I’ve learned *.
Lz says it’s the most important thing, but I just don’t understand! If there is a malfunction in the methanol water tower, it can be isolated for maintenance while the system continues to operate; if the water content is high, it can be replaced with fresh methanol. It can’t be said to be very important, but it also can’t be called the most important
Establish the liquid level, warm up the reboiler tubes, start the reboiler in operation, introduce reflux methanol, and monitor the temperature with high sensitivity. Regular tests are conducted on the wastewater at the bottom of the tower. But what’s most important isn’t its deployment at all!
The key is to monitor the temperature of the sensitive plate, and to control the liquid level as well as the temperatures at the bottom and top of the tower.