Urea injection systems wash cycles
US9255512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2012 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Aug 22, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87684
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Urea injection system wash cycle methods and systems are disclosed. An exemplary wash cycle method includes operating a urea injection system to provide urea solution to a first inlet of a blending chamber, provide pressurized gas to a second inlet of the blending chamber, and output a combined flow of pressurized gas and urea solution from the blending chamber. A pressure of the combined flow at a location downstream from the first inlet and the second inlet is monitored. A wash cycle is performed based upon the monitored pressure wherein the flow of pressurized gas is turned off and urea solution is provided to the blending chamber. An exemplary system includes a controller configured to control a urea injection system to perform a wash cycle in accordance with the exemplary method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.