Adiabatic expansion orifice assembly for passing a slurry from a high pressure region to a low pressure region
US4421722A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1981 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Nov 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J3/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An adiabatic expansion orifice assembly for substantially instantaneously passing a coal slurry from a high pressure region to a low pressure region and a corresponding process are disclosed. The orifice assembly includes a housing having an exit end wall and a passageway through the housing. The passageway terminates in a substantially cylindrical portion or opening adjacent the exit end wall. The effective dimensions of the opening provide a flow rate whereby the slurry passes from the high pressure region through the opening to the low pressure region in less than a predetermined period of time, most preferably less than approximately 0.3 microseconds. The corresponding process involves passing a coal slurry through an orifice in less than the predetermined period of time. This process provides substantially instantaneous transition from a high pressure region to a low pressure region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.