Photoelectric hydrogen production energy storage and cold energy recovery coupled dry ice production device and use method
US12215921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2023 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Sep 8, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2260/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A photoelectric hydrogen production energy storage and cold energy recovery coupled dry ice production device and a use method are disclosed. The device comprises a photoelectric conversion liquid hydrogen energy storage unit, photoelectricity participates in electrolysis of water in the storage unit to prepare hydrogen, and surplus hydrogen meeting downstream process requirements is liquefied in the unit; liquid hydrogen is output, so that intermittent photoelectric energy is converted into hydrogen energy to be stored. When hydrogen production through electrolysis of water is insufficient but industrial hydrogen is continuously used, high-grade and low-grade cold energy of low-temperature liquid hydrogen serving as cold sources in the unit is recovered from industrial tail gas purified CO2 and air separation nitrogen, liquid nitrogen and liquid CO2 are output and used for the storage unit and dry ice production respectively, and the liquid hydrogen is reheated and supplied to a downstream process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.