Patent ID: 11905234
Assignee: STAMICARBON B.V.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 2:
3. A plant for the production of solid urea products, the plant comprising a production section for producing a urea melt having a liquid urea connection to a finishing section for converting the urea melt into solid urea products, whereby the production section comprises an evaporation section for converting produced aqueous urea solution into the urea melt, and a water purification section downstream of the evaporation section, said evaporation section comprising a first stage evaporation section comprising a first stage evaporator and a first stage condenser, the first stage evaporator having a liquid outlet for a concentrated urea solution and a gas outlet to the first stage condenser, and a second stage evaporation section downstream from the first stage evaporation section comprising a second stage evaporator having a liquid inlet for receiving all of the concentrated urea solution and a second stage condenser, wherein the first stage condenser has a liquid outlet for sending condensed vapours to the water purification section, whereby the second stage evaporator has a connection to an outlet for utilized scrubbing liquid from a scrubbing system of the finishing section, and wherein said second stage evaporator has a gas outlet to the second stage condenser, wherein said second stage condenser has a liquid connection for sending condensed vapours to the scrubbing system in the finishing section.