Circulating fluidized bed combustion reactor with fly ash recycl

Furnaces – Process – Burning pulverized fuel

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

110106, 110245, F23D 100

Patent

active

049811118

ABSTRACT:
A circulating fluidized bed combustion reactor and a process for combusting a solid hydrocarbon fuel in the same wherein fly ash recycling is utilized to regulate heat transfer and to minimize erosion of reactor operating components. The process comprises introducing a solid hydrocarbon fuel and an oxygen-containing gas into a combustion zone which is surrounded by a plurality of adjoining cooling tubes containing a circulating fluid; combusting the fuel in the presence of the oxygen-containing gas within a predetermined temperature range thereby forming hot exhaust gases containing solid particles; discharging the hot exhaust gases containing the solid particles from the combustion zone and cooling the exhaust gases by indirect heat exchange against the cooling tubes; separating the resultant cooled solid particles into at least a first portion which is recycled into the combustion zone and a second portion having an average particle size smaller than the first portion; separating the second portion into a gas stream substantially free of particles and a concentrated stream of particles; recycling the concentrated stream of particles into the combustion zone at a rate sufficient to maintain the predetermined temperature range within the combustion zone and exhausting the gas stream which is substantially free of solid particles.

REFERENCES:
patent: 3951081 (1976-04-01), Martin et al.
patent: 4111158 (1978-09-01), Reh et al.
patent: 4259911 (1981-04-01), Jones
patent: 4532872 (1985-08-01), Anderson
patent: 4829912 (1989-05-01), Alliston 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

Circulating fluidized bed combustion reactor with fly ash recycl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circulating fluidized bed combustion reactor with fly ash recycl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circulating fluidized bed combustion reactor with fly ash recycl will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1991370

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