Mercury removal system and method
US7871586B2 · kind B2 · utility
Assignees
- Mitsubishi Electric Corporation
- Clean Coal Power R&D Co., Ltd.
- HOKKAIDO ELECTRIC POWER CO., INC.
- TOHOKU ELECTRIC POWER COMPANY, INC.
- TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED
- CHUBU ELECTRIC POWER COMPANY, INCORPORATED
- HOKURIKU ELECTRIC POWER COMPANY
- The Kansai Electric Power Co., Inc.
- THE CHUGOKU ELECTRIC POWER CO., INC.
- SHIKOKU ELECTRIC POWER CO., INC.
- KYUSHU ELECTRIC POWER CO., INC.
- CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
Inventors
Key dates
| Filing date | Jun 9, 2006 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jun 9, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a mercury removal system and method for effectively removing a mercury component, which is present in a gas stream in an extremely small amount in wet gas cleaning. The mercury removal system in wet gas cleaning includes a water washing tower for introducing therein a target gas containing a mercury component and transferring the mercury component into an absorbing solution, a flash drum (10) for flashing the absorbing solution discharged from the water washing tower to separate the absorbing solution into a gas component and waste water, an oxidation treatment means (1) for adding an oxidizing agent to the absorbing solution at the preceding stage of the flash drum, and a waste water treatment means for subjecting to coagulation sedimentation treatment the separated waste water containing the mercury component at the following stage of the flash drum to dispose of the mercury component as sludge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.