Specialized ammonia injection grid with the dual purpose of suppressing noise
US9067176B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Oct 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87652
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ammonia injection grid covered with sound adsorption material for a selective catalytic reduction (SCR) system that provides uniform distribution of ammonia to the SCR catalyst in NOX reduction systems and provides noise suppression for heat recovery steam generation systems, packaged boilers, simple cycle catalyst systems and fired heaters for superior operational efficiency. The ammonia injection grid covered with sound adsorption material includes an injection tube having at least one nozzle for injecting ammonia into a flow of flue gas. The ammonia injection grid also includes a corrugated turbulence enhancer covered with sound adsorption material associated with the injection tube to generate turbulent wake to enhance turbulent mixing and noise suppression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.