Alkylation water transport problem
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I would like to ask everyone: can the water transport system for alkylation units include a reaction system and a flash refrigeration system? If it is operated in conjunction with water intake, is nitrogen drying feasible? How to test the reactor stirring before starting up?
For alkylated hydrotreating, it is not recommended to include reactors, acid settling tanks, and flash systems; moisture will remain on the equipment walls and in various corners, thereby increasing uncertainties； If water transportation is carried out and simple nitrogen drying is not sufficient, it is best to use hot air and extend the refrigeration dehydration time appropriately; all moisture in areas exposed to acid must be removed completely. If a water-cooled operation scheme is adopted, it is recommended to pay special attention to cleaning the filters in front of the product pump and the refrigerant pump thoroughly!
Thank you, how long does a isobutane cycle usually take?
There are no issues with water supply as well; in Liaoning Baolai Alkylation, the reactor, sedimentation tank, flash tank, as well as the liquid separation tank at the compressor inlet, have all been connected and are in operation with water supply
Thank you! The advantage of combined transportation is that it allows for the testing of equipment and instruments, as well as training for personnel. The downside is the need for thorough drying, especially in those hard-to-reach areas and corners
Hydrological combined operation is not recommended; conduct individual tests on the equipment, and pay close attention to cleaning and purging processes
Are you referring to the dehydration in the isobutane refrigeration cycle? In the case of cyclic dehydration, it is determined based on the actual conditions of drainage at the lowest point, with the aim of removing as much moisture as possible from the system; generally, 24 hours is sufficient.
Yes, Guangxi Yuchai Petrochemical has also adopted water intermodal transport; both approaches are feasible. If the details are handled well, it doesn’t have much of an impact.