Urea plant with chilled condensation section
AssigneeStamicarbon B.V.
InventorRahul PATIL
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Abstract
The disclosure pertains to a urea production process comprising concentrating a first urea solution in a first vacuum evaporator in an evaporation section to give a urea melt and first vapor, and condensing said first vapor in a first condensation section, wherein the first condensation section is a chilled condensation section.
Claims15
A urea production process comprising concentrating a first urea solution in a first vacuum evaporator in an evaporation section to give a urea melt and first vapor, and condensing said first vapor in a first condensation section, wherein the first condensation section is a chilled condensation section using a cooling fluid other than water, wherein the first condensation section is a heat exchanger having a first side and a second side separated by at least a heat-exchanging wall, wherein chilled cooling fluid is supplied from a chiller to an inlet at said second side of the condenser and wherein the cooling fluid is chilled in the chiller by at least 5° C. and/or to a temperature of less than 25° C.
A urea production plant comprising an evaporation section comprising a first evaporator and a first condensation section, wherein the first evaporator has an inlet for urea solution and an outlet for urea melt and an outlet for vapor connected to said first condensation section, wherein said first condensation section is a chilled condensation section, further comprising a chiller, wherein the first condensation section is a heat exchanger having a first side configured for receiving said vapor to be condensed and a second side having a cooling fluid inlet connected to an outlet of said chiller, and a cooling fluid outlet connected to an inlet of said chiller, and wherein the chiller comprises a compressor connected to said cooling fluid outlet of said first condensation section, a condenser connected to an outlet of said compressor, and an expansion valve having an inlet connected to said condenser and an outlet connected to said cooling fluid inlet of said first condensation section.
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Dependencies are inferred from the claim text.