Method using gas-gas heat exchange with an intermediate direct contact heat exchange fluid
US5398497A · kind A · utility
Inventor
Key dates
| Filing date | May 7, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | May 7, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28C3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for burning slurry, liquid, or gaseous fuels at elevated pressures allows lower quality fuels to yield more energy and higher quality energy due to increased dew point temperatures in flue gases and high temperature heat exchange. The combination of elevated pressures and oxygen rich oxidant allows increased waste heat recovery, higher quality heat recovery, and substantially reduced air pollution. Turbochargers operated by flue gas and pressurized air, force the oxygen into the combustion chamber at increased pressures. Oxygen permeable membranes lower levels of nitrogen and reduce pollution by enhancing the stripping of pollutants from the flue gas and by the absolute reduction of flue gas exhaust. Latent heat recovery and water dilution of combustion mixtures are important aspects of the embodiments of this invention; both are enhanced by the vaporization of influent liquids while contacting influent gasses. High temperature heat exchange is facilitated by direct contact heat exchange means. Substantially reduced pollution levels allow operation in residential and downtown areas where cogenerated heat and coolant can be utilized. This method is particularly useful for c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.