Solid fuel pulverizer for pulverized fuel burning system
US4690338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Mar 8, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23K2201/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A solid fuel pulverizer especially useful in a system for pulverizing and burning solid fuel, such as coal or other fossil fuel, that is characterized by a possible turndown ratio of up to at least fifteen to one. The pulverizer is capable of both impact and autogenous pulverizing of the fuel so that about 80% will be no more than 40 microns in size and includes a series of impellers mounted for rotation on a preferably vertical shaft in a housing whose top wall has openings for the admission of air and a solid fuel to be pulverized. The fuel is pulverized by impact against the side walls of the housing and descends perpherially of the impellers to discharge adjacent to the bottom of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.