Coal fired furnace light-off and stabilization using microfine pulverized coal
US4552076A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1984 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Nov 19, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23K1/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for the cold start of a pulverized coal-fired furnace (10) without prior warm-up of the furnace wherein a supply of microfine pulverized coal (64) supplied from a micropulverizer (60) is combusted to generate a hot gas which is passed to a load-carrying mill (20) as the drying media for the coal pulverized therein. Pulverized coal entrained in the hot gas passes from the load-carrying mill to the load-carrying burner (18) of the furnace (10) and is ignited therein to produce a warm-up flame. A portion of the microfine pulverized coal (68) may also be admixed with the pulverized coal from the load carrying mill (20) to enhance the reactivity thereof. An additional portion (66) of the microfine pulverized coal may be used to fire a pilot igniter to ignite the pulverized coal supplied to the load-carrying burners (18) from the load-carrying mill (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.