Large capacity air-powered smokeless flare
US4457696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1981 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Sep 8, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23G7/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A large capacity air-powered flare for smokeless combustion of very large volumes of vented waste gases, comprises a first inner vertical conduit of diameter D1, for the flow of waste gas, and a second larger coaxial conduit of diameter D2, for the flow of primary combustion air, at a selected velocity in the annular space therebetween. Above the top the inner conduit there is a cylindrical obstruction of diameter D3 which is greater than D1, but less than D2. This forces the upwardly flowing gases to be deflected outwardly and upwardly into the second annular space between the obstruction and the outer conduit. The velocity of primary combustion air in the second annular space is at least 50 f.p.s., which serves to thoroughly mix with the inflowing gases so that as they rise through the second annular space they continue flowing above the top of the flare as an annular wall of high velocity gas, air and flame. This high velocity annular flow has large surface area on the outside and inside. Because of the high velocity of flow, secondary air is induced into the outside wall of this column, and also axially downwardly into the interior of this flow, where it moves radially outwardl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.