Plant for urea production
AssigneeCasale SA
InventorAndrea SCOTTO
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Abstract
Plant for the synthesis of urea, comprising: a synthesis section comprising at least one reactor, a compressor for supplying CO2 to said synthesis section, a gas turbine for the operation of said CO2 compressor and a heat recovery steam generator; the heat source of said heat recovery steam generator consists of the exhaust gases of said gas turbine, and at least one steam flow produced by said heat recovery steam generator is used as heat source for at least one component of said urea plant.
Claims8
1) A plant for the synthesis of urea, comprising:
- a synthesis section comprising at least one reactor,
- a compressor feeding CO2 to said synthesis section,
- characterized in that it comprises a gas turbine for the operation of said CO2 compressor and in that it comprises a heat recovery steam generator,
- wherein the hot source of said heat recovery steam generator is represented by exhaust gases of said gas turbine,
- and wherein at least one steam flow produced by said heat recovery steam generator is used as heat source for at least one component of said urea plant.
7) A method for revamping a plant for the synthesis of urea from ammonia and CO2, wherein:
- the plant includes a synthesis section, operating at a predefined synthesis pressure, comprising at least one reactor,
- the plant also comprises a CO2 compressor for feeding CO2 to at least one of the components of said synthesis loop;
- the method being characterized by the additional installation of a gas turbine for the operation of said CO2 compressor,
- and the additional installation of a heat recovery steam generator, wherein the heat source of said heat recovery steam generator is represented by the exhaust gases of said gas turbine, and wherein at least one steam flow produced by said heat recovery steam generator is used as heat source for at least one component of said plant.
8) The method according to claim 8, wherein the synthesis section comprises a stripper and a condenser, and the method envisages that a steam flow produced by said heat recovery steam generator is used as heat source for the stripper of the synthesis section.
Dependencies are inferred from the claim text.