External mixing pressurized two-fluid nozzle and a spray drying method
US9981200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2011 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Aug 31, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F9/082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein is an external mixing pressurized two-fluid nozzle for atomising a liquid by means of liquid pressure and gas, comprising an inner feed liquid pipe (1) extending axially between an upstream end and a downstream end, having a feed liquid conduit (2), a feed liquid inlet (3) positioned at the upstream end and a feed orifice (4) positioned at the downstream end, and a co-axial first gas pipe (5) extending radially outside the inner feed liquid pipe (1) and forming a first gas conduit (6) between the first gas pipe (5) and the inner feed liquid pipe (1), the first gas pipe (5) having a gas outlet slit (7) positioned at the downstream end. Said external mixing two-fluid nozzle provides a swirling motion of the gas, which combined with a pressurized feed liquid enables the production of spray dried powder at industrially applicable capacities with low energy consumption and a small particle size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.