What type of reboiler is suitable for the solvent regeneration tower? Siphon or kettle-type?
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What type of reboiler is suitable for the solvent regeneration tower? Siphon or kettle-type? What are their respective advantages and disadvantages?
Same question: what is a detailed introduction to the application of reboilers?
Firstly, the cost of batch reboilers is higher than that of thermosiphon reboilers; they are also much larger in size, and their heat transfer efficiency is inferior to that of siphon reboilers. If the kettle liquid meets the requirements of a siphon reboiler, a siphon reboiler should be preferred. Secondly, if the viscosity of the kettle liquid is high and it contains many impurities, leading to easy scaling, then a kettle-type design is an appropriate choice. Kettle-type reboilers have low requirements regarding the viscosity of the liquid in the kettle and are easy to clean. That’s more or less what it means. Most conventional MDEA solvent regeneration towers use BJS-type horizontal thermosyphonic reboilers.
We use a vertical thermosyphon reboiler.
This issue has been discussed many times on the forum. For amine solution regeneration, the axe-type method is currently used in most cases, while the thermal siphon type has been gradually phased out due to reasons such as corrosion.
There’s not much to say – most of the current units have been replaced with kettle-type reboilers, as shutting them down for maintenance is too costly.
Why is it so costly to shut down for maintenance?
Is there such a saying? I saw many horizontal thermosiphons
In the past, thermal siphon types were more commonly used, while those newly introduced are basically axe-type.
Which of the newly installed devices are kettle-type?
At present, most refineries operate on a centralized solvent regeneration basis; if this regeneration process stops, the desulfurization of dry gas and liquefied gas ceases as well. If sulfur amine solutions are also regenerated in a centralized manner, emissions will exceed permissible levels.