Method and apparatus for improving steam temperature control
US7109446B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Feb 14, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28G15/003
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A system for analyzing the impact of operating soot blowers in a heat transfer section of a power plant determines a steam temperature influencing sequence and calculates a feed-forward signal to be applied to a steam temperature control system of the heat transfer section. The system operates a group of soot blowers for a number of times and collects quantitative data related to the steam temperature during and after each soot blowing operation. A computer program used by the system analyzes the quantitative data, generates a number of statistical parameters for evaluating the impact of operating the soot blowers according to a given sequence on the steam temperature, and determines whether the given sequence is a steam temperature influencing sequence. Consequently, the system determines a feed-forward signal based on the steam temperature influencing sequence and applies the feed-forward signal to a steam temperature control system used by the heat transfer section to compensate for any adverse impact of soot blowing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.