Method for reduction of slagging and fouling of the...

Details Method for reduction of slagging and fouling of the... Method for reduction of slagging and fouling of the...

2005-04-26

2005-04-26

Rinehart, Kenneth (Department: 3749)

Furnaces

Process

Treating fuel constituent or combustion product

C110S348000, C110S215000

Reexamination Certificate

active

06883443

ABSTRACT:
The present invention is a method for reducing the slagging and fouling of the surfaces of the waterwalls, firebox, superheater, and reheater of the furnace of a coal-fired steam boiler. The process reduces the firebox exit temperature to below the specific ash melting temperature by injecting the following, either alone or in combination, into ports located in the upper section of the firebox: recirculated flue gas from downstream of the electrostatic precipitator, atomized water, or a sorbent water slurry. All of these materials have a lower temperature than the main flue gas or require additional heat for evaporation. Mixing these materials with the main flue gas from the furnace will not affect the coal combustion process, yet will reduce the temperature of any fly ash particles in the main flue gas to below the specific ash fusion temperature, and thus, prevent slagging and fouling within the furnace.

REFERENCES:
patent: 4056068 (1977-11-01), Hafeli
patent: 4223640 (1980-09-01), Rochford et al.
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.

Affiliated with

Also associated with

Rating

Method for reduction of slagging and fouling of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for reduction of slagging and fouling of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reduction of slagging and fouling of the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3396368