Invention Application
- Patent Title: RECOMPRESSED TRANSCRITICAL CYCLE WITH POST-EXPANDING IN CRIOGENIC- OR LOW-TEMPERATURE APPLICATIONS, AND/OR WITH COOLANTS
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Application No.: US17599764Application Date: 2020-03-19
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Publication No.: US20220154593A1Publication Date: 2022-05-19
- Inventor: Salvatore DE RINALDIS , Massimiliano SBARSI , Lucio AURILIO , Anton Marco FANTOLINI
- Applicant: SAIPEM S.P.A.
- Applicant Address: IT San Donato Milanese (Milano)
- Assignee: SAIPEM S.P.A.
- Current Assignee: SAIPEM S.P.A.
- Current Assignee Address: IT San Donato Milanese (Milano)
- Priority: IT102019000004733 20190329
- International Application: PCT/IB2020/052524 WO 20200319
- Main IPC: F01D15/10
- IPC: F01D15/10 ; F01D25/10

Abstract:
A process for regasifying a fluid and producing electrical energy includes subjecting a working fluid to 1) high-pressure pumping, 2) heating in a recovery unit to obtain a heated flow, the heating step comprising a low-temperature heat recovery step 2a) and a high-temperature heat recovery step 2b), 3) further heating to obtain a further heated flow, 4) expanding in a turbine, with production of electrical energy, to obtain an expanded flow, 5) cooling in a recovery unit by heat exchange, in a step 5a) with the flow of step 2b) and in a step 5b) with the flow of step 2a) to obtain a cooled flow, 6) expanding with production of mechanical energy, and 7) condensing the flow of working fluid. After step 5), a portion of the flow of working fluid is not subjected to step 6) and is subjected to a recompressing step.
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