Burner-tilt drive apparatus for a pulverized coal fired steam generator
US4434747A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1982 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | Jul 1, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C5/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In a pulverized coal-fired steam generator having a generally vertical furnace (1) and a plurality of fuel-air admission assemblies (10) arrayed in a vertical windbox (40) in one or more walls of the furnace (1), at least one of the fuel-air admission assemblies (10) being a low load fuel-air admission assembly having a split coal bucket (30) with vertically adjustable upper and lower coal nozzles (32,34), the remaining assemblies having vertically adjustable single nozzle buckets (28), a tilt apparatus (50,60) for vertically adjusting all nozzles in unison in response to steam temperature at high loads and for vertically adjusting the lower coal nozzles of the split coal bucket of the low load fuel-air admission assembly independent of all remaining nozzles at low loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.