US 12,359,671 B2
Hydrogen compressing assembly, hydrogen production plant, and compressing method
Francesco Cangioli, Florence (IT); Domenico Berterame, Florence (IT); Angelo Grimaldi, Florence (IT); and Alberto Guglielmo, Florence (IT)
Assigned to Nuovo Pignone Tecnologie—S.R.L., Florence (IT)
Appl. No. 18/556,594
Filed by NUOVO PIGNONE TECNOLOGIE-SRL, Florence (IT)
PCT Filed Apr. 21, 2022, PCT No. PCT/EP2022/025168
§ 371(c)(1), (2) Date Oct. 20, 2023,
PCT Pub. No. WO2022/228720, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 102021000010475 (IT), filed on Apr. 26, 2021.
Prior Publication US 2024/0209866 A1, Jun. 27, 2024
Int. Cl. F04D 25/16 (2006.01); F04D 25/06 (2006.01)
CPC F04D 25/163 (2013.01) [F04D 25/068 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A gas compressing assembly for compressing a gas, comprising:
a low pressure stage having a first barrel compressor and a second barrel compressor, the low pressure stage further comprising:
a first condenser connected upstream of the first barrel compressor;
a first heat exchanger downstream of the first barrel compressor to lower the temperature by intercooling, and, eventually, condensing a wet part of the gas;
a second condenser connected downstream of the first heat exchanger and interposed between the first heat exchanger and the second barrel compressor; and
a second heat exchanger connected downstream of the second barrel compressor;
an intermediate pressure stage downstream of the low pressure stage, the intermediate stage comprising a third barrel compressor and a fourth barrel compressor; and
a final pressure stage downstream of the intermediate stage, the final pressure stage comprising an integrally-geared centrifugal compressor;
a third condenser and a fourth condenser series-connected downstream of the second heat exchanger, wherein the third condenser and the fourth condenser are capable of reducing the wet part of the gas;
a third heat exchanger connected downstream of the third barrel compressor;
a fifth condenser connected between the third heat exchanger and the fourth barrel compressor; and
a sixth condenser connected downstream the fourth barrel compressor.