Combustion system with low NO.sub.x adapter assembly
US5275554A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Jul 13, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2202/50
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A low NO.sub.x combustion system for reducing the production of nitrogen oxides in its emissions by using a low NO.sub.x adapter assembly in conjunction with a heat exchanger and a standard burner. The low NO.sub.x adapter assembly includes a low NO.sub.x manifold housing coupled between the heat exchanger and the burner, a flue gas recirculating fan coupled to the stack of the heat exchanger and the low NO.sub.x manifold housing and an operating control mechanism for controlling and regulating the primary air, the recirculated flue gas and the fuel to the burner and the low NO.sub.x manifold housing. NO.sub.x is reduced by supplying recirculated flue gas and a secondary fuel into the combustion chamber of the heat exchanger adjacent the outlet end of the burner via the low NO.sub.x manifold housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.