Total heat energy recovery system for furnace-process phosphoric acid
US12398039B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2022 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Apr 19, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B25/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A total heat energy recovery system for furnace-process phosphoric acid is disclosed by the present disclosure. The system comprises a phosphorus burning tower, a hydration tower, an absorption tower, a Venturi tube, a demister, an induced draft fan, a deaerator, an economizer, a dilute acid circulating tank, a phosphoric acid pump, and a feedwater pump. In consideration of the whole process system, fresh soft water is deoxidized after being heated by an upper head of the phosphorus burning tower and a gas guide tube, and the deoxidized water is then pumped into the economizer by a high-pressure pump to recover the heat of the hydration tower and then enters a steam pocket of the phosphorus burning tower to generate medium-high pressure steam. Therefore, unified recovery of the heat of a furnace-process phosphoric acid device is achieved, the medium-high pressure steam is generated, the effective energy is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.