Pulp degassing
US4362536A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1981 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Jun 8, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D19/0052
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Pulp degassification is effected by a structure that may be mounted on a pulp treatment vessel, such as an oxygen reactor blow tank. The degassifier includes a housing that is substantially circular in cross-section and tapers from a first end to a second end along a central axis. A pulp inlet is adjacent the first end and introduces pulp tangentially and an outlet is adjacent the second end extending concentrically with the central axis. A blade assembly is mounted for rotation about an axis generally coincident with the housing central axis, and the blade assembly is rotated to impart a high speed rotational velocity component to the pulp as it enters the housing. A gas outlet is adjacent the housing first end, vertically above the housing second end, and adjacent the central axis. A conically shaped baffle or the like is provided surrounding the gas outlet to prevent short-circuiting of pulp from the inlet to the gas outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.