Homogenizer/subsampler for tar sand process streams
US4328710A · kind A · utility
Assignees
- Petro-Canada Exploration, Inc.
- Her Majesty the Queen in right of the Province of Alberta, Government of the Province of Alberta, Department of Energy and Natural Resources, Alberta Syncrude Equity
- Pan Canadian Petroleum Limited
- Esso Resources Canada Limited
- Canada-Cities Service, Ltd.
- Gulf Canada Resources Limited
Inventors
Key dates
| Filing date | Apr 2, 1981 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Apr 2, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F27/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and process are described for homogenizing and subsampling process streams such as those present in the hot water extraction process for recovery of bitumen from tar sand. Such streams contain widely variable proportions of heavy oil, water, and solids. To obtain a representative analysis-size subsample from such a stream, a bulk sample is taken into a cylindrical open-topped vessel containing a coaxial cylindrical draft tube spaced from the internal wall of the vessel. A head element closes and seals the top of the vessel. An impellor extending into the draft tube through the head element is actuated to circulate the bulk sample along an elliptical flow path within the vessel. The vessel contents are maintained in a pressurized condition by the introduction of inert gas. A subsample is taken by mechanically opening and closing a sample port extending through the side wall of the vessel and communicating with the flow path; the subsample is thus taken while the bulk sample is in motion and the components of the mixture are in a homogenized condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.