Coal pulverizer inerting and fire extinguishing system
US4754932A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1987 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Mar 18, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A combination inerting and fire extinguishing system particularly suited for employment in a pulverizing bowl mill (10) of the type that is operative for effecting the grinding of material and that includes a substantially closed separator body (16) in which a grinding table (18) is supported for rotation relative thereto and a plurality of grinding rolls (22) are also supported therewithin such that the plurality of grinding rolls (22) cooperate with the rotating grinding table (18) to effect a grinding of the material disposed upon the grinding table (18). The subject inerting and fire extinguishing means includes a continuous purging means, a backup inerting means, a pulverizing bowl mill clearing means and a water injection fire suppression means. The continuous purging means is operative during any inerting sequence to cause an inerting medium to flow continually through the pulverizing bowl mill (10) so as to ensure that there is no buildup of volatile gases therewithin. The backup inerting means is operative to provide CO.sub.2 inerting when the primary steam inerting system is either not available or for some other reason cannot be utilized. The pulverizing bowl mill cleari…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.