Abstract:
When revamping a Stamicarbon Urea plant, the specific reaction volume is decreased with the revamp in most cases. As a result, the amount of time the urea solution spends in the reactor will decrease, and thus the efficiency of the reactor will decrease.
However, by changing the internals of the reactor (using different types of trays) its efficiency can be improved. In the past, two types of trays were used in Stamicarbon Urea plants: The conventional trays and the high-efficiency trays.
Now a new type of tray is available which improves the efficiency of the reactor and thus improves the efficiency of the high-pressure steam consumption.
These trays are called the Siphon Jet Pumps, and the first trays have successfully been installed in SKW Piesteritz. In this paper, the Siphon Jet Pumps are introduced and several aspects around these trays are discussed.
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