Exhaust gas treatment systems utilizing a plurality of reduced-resistance mixers
US10138789B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jul 18, 2017 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Aug 11, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas treatment system includes a selective catalytic reduction device (SCR); a reductant injector upstream from the SCR and configured to communicate reductant into the SCR via a conduit defined by an outer periphery, a first mixer disposed within the conduit upstream from the reductant injector, and a second mixer disposed within the conduit downstream from the reductant injector and upstream from the SCR. Each of the first mixer and the second mixer comprises a plurality of blades extending between a center region of the conduit to the conduit periphery, wherein each of the blades at least partially obstructs fluid flow through the conduit and are angled relative to a cross sectional plane of the conduit such that fluid flow is permitted between adjacent blades, and the plurality of blades form a turbulence plane defined by a plane angle measured from the two outermost blades of the turbulence plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.