Fuel-flexible burner apparatus and method for fired heaters
US9593847B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2014 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Mar 26, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/14003
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A burner apparatus for a fired heating system and a method of burner operation. The burner provides stable operation when burning gas fuels having heating values ranging from low to high and accommodates sudden wide changes in the Wobbe value of the fuel delivered to the burner. The burner apparatus includes a plurality of exterior fuel ejectors and has an exterior notch which extends around the burner wall for receiving and combusting a portion of the gas fuel. At least a portion of the hot combustion product gas produced in the exterior notch is delivered through channels formed in the burner wall to the combustion area at the forward end of the burner. As the Wobbe value of the gas fuel decreases, one or more outer series of addition ejectors can be automatically activated as needed to maintain the amount of heat output desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.