Fuel injector nozzle with preheat sheath for reducing thermal sh

Details Fuel injector nozzle with preheat sheath for reducing thermal sh Fuel injector nozzle with preheat sheath for reducing thermal sh

1997-01-31

1998-07-28

Tran, Hien

Gas: heating and illuminating

Generators

Cupola

48197R, 48206, 48DIG7, 2394195, 239422, C10J 346, C10J 348

Patent

active

057857210

ABSTRACT:
The operating life of a fuel injector nozzle for a gasifier is prolonged by shielding the fuel injector nozzle with a preformed protective insulating sheath before the fuel injector nozzle is installed inside a preheated reaction chamber of the gasifier. The thermal insulating sheath has low thermal conductivity and is placed around the fuel injector nozzle body. The thermal sheath can also be positioned to cover a downstream end of the fuel injector nozzle that includes a nozzle portion. The thermal insulating sheath is supported by ceramic rope, solder or metal wire and is gradually consumable in the environs of the reaction chamber immediately after the fuel injector nozzle is installed. Before the thermal sheath is consumed, it moderates the temperature rise rate of the fuel injector nozzle while the fuel injector nozzle is being installed in the gasifier.

REFERENCES:
patent: 4443228 (1984-04-01), Schlinger
patent: 4443230 (1984-04-01), Stellaccio
patent: 4952218 (1990-08-01), Lipp et al.

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