An injection lance for uniformly injecting anhydrous ammonia...

B - Operations – Transporting – 01 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B01D 53/56 (2006.01) B01D 53/79 (2006.01) B01F 5/06 (2006.01)

Patent

CA 2253781

An injection lance (10) for injecting a mixture of air and anhydrous ammonia into a boiler (12) having a flue gas stream moving therethrough to reduce nitrogen oxides therein. The lance (10) comprises outer (18), intermediate (42), and inner tubes (28). The outer end (30) of the inner tube (28) is in communication with a source of anhydrous ammonia while the outer end (22) of the outer tube (18) is in communication with a source of mixing air. The outer end (44) of the intermediate tube (42) sealably embraces the exterior surface (36) of the inner tube (28) so that air being introduced into the outer tube (28) passes towards the inner end (32) of the lance (10) between the outer (18) and intermediate (42) tubes. The mixing air and the anhydrous ammonia are passed into the space between the inner tube (28) and the intermediate tube (42) and then are discharged from the lance (10) through discharge nozzles (54) or ports which extend from the interior of the intermediate tube (42) to the exterior of the outer tube (18).

L'invention se rapporte à une lance (10) servant à injecter un mélange d'air et de gaz ammoniac anhydre dans une chaudière (12) dans laquelle se déplace un flux de gaz de combustion, pour réduire les oxydes d'azote présents dans les gaz de combustion. Cette lance (10) comprend un tube externe (18), un tube intermédiaire (42) et un tube interne (28). L'extrémité externe (30) du tube interne (28) communique avec une source de gaz ammoniac anhydre, alors que l'extrémité externe (22) du tube externe (18) communique avec une source d'air de mélange. L'extrémité externe (44) du tube intermédiaire (42) épouse hermétiquement la surface extérieure (36) du tube interne (28) de façon à ce que l'air introduit dans le tube externe (28) passe vers l'extrémité interne (32) de la lance (10) entre le tube externe (18) et le tube intermédiaire (42). L'air de mélange et le gaz ammoniac anhydre traversent l'espace entre le tube interne (28) et le tube intermédiaire (42), et sont ensuite expulsés de la lance (10) par des ajutages (54) ou orifices d'évacuation qui s'étendent de l'intérieur du tube intermédiaire (42) à l'extérieur du tube externe (18).

LandOfFree

Say what you really think

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

Rating

An injection lance for uniformly injecting anhydrous ammonia... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with An injection lance for uniformly injecting anhydrous ammonia..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An injection lance for uniformly injecting anhydrous ammonia... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1568658

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