Retractable chemical injection system

Details Retractable chemical injection system Retractable chemical injection system

1995-01-27

1996-12-17

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

110216, 110345, 422172, 422182, B01D 5000

Patent

active

055850723

ABSTRACT:
A retractable chemical injection device especially adapted for introducing a chemical reactant solution into a large scale combustion device such as a fossil fuel fired boiler. The device incorporates a lance tube mounted to a elongated frame located outside of the combustion device which enables the lance tube to be extended into and retracted from the combustion device flue gas stream. The lance tube carries a plurality of axially distributed discharge nozzles enabling the chemical reactant entrained in an injection carrier to be ejected from the nozzles. The injection device provides for atomization of the chemical reactant solution before the mixture passes into the lance tube which provides the beneficial effects of cooling the lance tube and providing a uniform distribution of the chemical solution to the distributed discharge nozzles. Additional features of the injection device include providing a low emissivity coating for the lance tube to reduce heat transfer to the lance tube and means for adjusting the angular position of the lance tube discharge nozzles in use.

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patent: 5277135 (1994-01-01), Dubin et al.
patent: 5281403 (1994-01-01), Jones

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