Title:
METHOD FOR IGNITING PULVERIZED COAL IN COAL-FIRED BOILER AND BURNER THEREOF
Document Type and Number:
WIPO Patent Application WO/2010/083638
Kind Code:
A1
Abstract:
A method for igniting the pulverized coal in a coal-fired boiler and a burner thereof are provided, both of which belong to the technical field of the ignition of coal-fired boilers. The burner for igniting pulverized coal includes a primary air nozzle (1), through which a mixture of pulverized coal and air is blown into the furnace of the boiler, and an opposite fire outlet (9). The primary air nozzle (1) connects with a flow passage (2, 3). The flow passage (2, 3) is a passage having a step-shaped cross-section thereby the flow passage (2, 3) expands sharply. The mixture of pulverized coal and air can form circumfluence (B, C) in the flow passage (2, 3). An ignition component (8) is equipped on the wall of the circumfluence zone. The ignition component (8) firstly ignites the circumfluence (B, C) and then ignites the main current (A) by the ignited circumfluence (B, C), thus realize the ignition of all the pulverized coal current.
Inventors:
XIONG CHENGRUI (CN)
Application Number:
PCT/CN2009/001535
Publication Date:
July 29, 2010
Filing Date:
December 23, 2009
Export Citation:
Assignee:
XIONG CHENGRUI (CN)
International Classes:
F23D1/02; F23C3/00
Foreign References:
| US4991520A | 1991-02-12 | |||
| CN87101964A | 1987-09-09 | |||
| CN201348246Y | 2009-11-18 | |||
| GB2286662A | 1995-08-23 | |||
| US5823759A | 1998-10-20 | |||
| DE10232373A1 | 2004-01-29 |
Attorney, Agent or Firm:
SHANGCHENG & PARTNERS (18th Floor，Ever Bright World CenterNo.28 West Ping An Li Avenue, Xicheng District, Beijing 4, CN)
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