System and method for drum level control
US8887747B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7297
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A level control system is provided. The system includes multiple sensors configured to measure multiple parameters related to a drum, wherein the multiple parameters include a drum liquid level, a vapor flow rate leaving the drum, a downstream pressure of the drum, and a feed-liquid flow rate entering the drum. The system also includes a level controller configured to adjust a level control valve in accordance with a signal representative of the drum liquid level, a signal representative of the downstream pressure and a signal representative of a given drum liquid level set point. The level controller is further configured to receive a feedback signal representative of a combination of a fraction of the signal representative of the drum liquid level and a fraction of the signal representative of the downstream pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.