Pantleg circulating fluidized bed boiler and combustion method using same
US5370084A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1994 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | May 26, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B31/0084
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A combustion subsystem with a circulating fluid bed boiler (12) having a pantleg configuration. The boiler includes front (22) and back (24) walls with external fluid bed heat exchangers (48) integral therewith. In addition to the conventional fuel inlets (54) which provide for entry of fuel into the side walls of the boiler through conduits connected to the seal pots (36) of solids recycle cyclones (30), supplemental fuel inlets (63, 66, 70, 72) are provided on the front and back wails of the boiler through the fluid bed heat exchangers or between adjacent fluid bed heat exchangers. The invention improves combustion efficiency in large boilers by reducing the theoretical mixing length within the boiler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.