Suspension preheater
US4270900A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1980 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Jan 7, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B7/2033
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A suspension preheater adapted to be connected to the feed end housing of a rotary kiln or the like, whereby kiln exhaust gas emerging from the feed end housing passes through the preheater in countercurrent heat exchange relation with particulate feed material for the kiln which passes through the preheater from a feed inlet end contiguous the upper end of the preheater to a feed discharge end at the lower end of the preheater, comprising one or more cyclone means arranged in series gas and particulate feed material flow relation with respect to each other, means for admitting the particulate feed material from a feed material supply source to the upper portion of the preheater, a hollow preheating chamber at the lower portion of the suspension preheater, the hollow preheating chamber having the upper end thereof in gas and material flow communication with the upper end of the lowermost of the cyclone means, the lower end of the hollow preheating chamber being in gaseous flow communication with the feed end housing of the rotary kiln, a first particulate material delivery pipe connecting the lower portion of the lowermost cyclone means to the interior of the hollow preheating cham…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.