Reboiler of regeneration tower and methanol-water separation tower

After the cold zone circulation of the low-temperature methanol washing system is established, the hot regeneration tower reboiler can be started. When the bottom liquid level of the methanol-water separation tower is established, the methanol-water separation tower reboiler can be put into operation.

Main features of reboiler: 1. The total heat transfer coefficient is more than twice that of carbon steel and stainless steel tube heat exchangers. ； 2. High temperature and pressure resistance ； 3. Due to its full-arc flexible transition structure, it realizes variable cross-section flow of fluid, forming positive and negative pressure differences, and has very strong self-cleaning and anti-scaling capabilities. ； 4. The tube wall is thin (0.8-1.0mm), the corrugated structure has no stress, no temperature gradient, and the fluid temperature is almost instantaneous. ； 5. Small pressure drop ； 6. The stress is evenly distributed and no tensile fission occurs. ； 7. The heat exchange tube bundle can be disassembled, extracted, repaired and cleaned ； 8. The heat exchange area is 60% of that of carbon steel and stainless steel under the same conditions, which can fully meet the working conditions.

When the system is cooling, the hot regenerating tower is activated. According to the amount of methanol water in the system, if it exceeds the standard, the lean liquid pump from the hot regenerating tower to the separation tower is started. When the liquid level of the separation tower rises, the reboiler of the separation tower is activated.

1. When the water content in the system is normal, a hot regeneration tower should be used when using the chiller, mainly to prevent the cold medium from entering the hot tower.； When the regeneration tower is stable, the water separation tower is put into operation. 2. When the water content in methanol is high, a part of the methanol with higher water content can be poured into the 5th tower when filling the methanol system to separate methanol and water. The above statement is not necessarily correct, and you are welcome to continue the discussion. !

When shutting down for a short period of time and then driving again, a regeneration tower must be installed when building a cycle, followed by a water separation tower. During initial startup, wait until the methanol temperature of the system drops to a certain level before putting the regeneration tower into operation. In principle, the inlet temperature of the lean methanol pump should be controlled within a certain range. It was put into use too early. The inlet temperature of the methanol pump is too high and it is prone to cavitation. ； Too late and cold methanol will enter the hot zone and cause damage to equipment pipelines. After the regeneration tower is put into use, if the water content in the system is high, the dehydration tower can be put into use as soon as possible.