Method and apparatus for recovering heat from flue gases and for cleaning the same
US4909318A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/438
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for recovering heat and separating substances from a flue gas streaming through a heat exchange apparatus comprising a casing with heat exchange elements inserted thereinto, a medium being provided for absorbing heat from the flue gas. According to the invention the medium that shall absorb heat from the flue gas is conducted through the heat exchange elements, the heat exchange elements and the connections to the casing for flue gas being so placed that the flue gas streams perpendicularly to the heat exchange elements, the flue gas being given a flow velocity cross the heat exchange elements of not more than 3 m/sec. Soot in the flue gas is collected on the heat exchange elements and adsorbs and/or dissolves gaseous substances such as sulphur dioxide. The invention also relates to an apparatus for carrying out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.