System and method of reducing pulverizer flammability hazard...

Furnaces – Process – Treating fuel constituent or combustion product

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C110S347000, C110S204000, C110S106000

Reexamination Certificate

active

10866355

ABSTRACT:
The present invention is a system and method of reducing nitrogen oxides in coal combustion exhaust gases and preventing fire and explosion in pulverized coal systems. The present invention first cools the flue gas exiting a boiler of the pulverized coal system with an air preheater. The present invention removes any particles such as fly ash from the cooled flue gas with an electro-static precipitor or a bag house and recirculates the flue gas. The temperature of the recirculated flue gas is adjusted to a desired temperature and is injected into the pulverizer with combustion air from the air preheater, creating a safer environment for pulverizing the fuel. This mixture of pulverized fuel, air and flue gas is then burned in the boiler, resulting in a cleaner output containing significantly less nitrous oxide.

REFERENCES:
patent: 3246635 (1966-04-01), Powell et al.
patent: 4056068 (1977-11-01), Hafeli
patent: 4223640 (1980-09-01), Rochford et al.
patent: 4411204 (1983-10-01), Hamilton
patent: 4498402 (1985-02-01), Kober et al.
patent: 4616574 (1986-10-01), Abrams et al.
patent: 4642225 (1987-02-01), Leikert
patent: 4796548 (1989-01-01), Merrell et al.
patent: 4873930 (1989-10-01), Egense et al.
patent: 5309850 (1994-05-01), Downs et al.
patent: 5313895 (1994-05-01), Sekiguchi et al.
patent: 5683550 (1997-11-01), Ryham
patent: 5685243 (1997-11-01), Gohara et al.
patent: 6213032 (2001-04-01), Breen et al.
patent: 6280695 (2001-08-01), Lissianski et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System and method of reducing pulverizer flammability hazard... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method of reducing pulverizer flammability hazard..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method of reducing pulverizer flammability hazard... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3868883

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.