Alloy for composite tubing in fluidized-bed coal combustor

Details Alloy for composite tubing in fluidized-bed coal combustor Alloy for composite tubing in fluidized-bed coal combustor

1986-12-08

1987-08-11

Favors, Edward G.

Liquid heaters and vaporizers

Tubes and connections

122DIG13, 122235C, 138143, 165180, 165905, 420448, F22B 3706, F22B 3710

Patent

active

046854274

ABSTRACT:
A composite tube structure having an inner substrate alloy and an outer, corrosion resistant alloy suitable for use in fluid-bed coal combustion reactors to form a water wall around at least a portion of the periphery of the fluid bed zone. The outer, corrosion resistant alloy centers around a composition of 0.1% carbon, 0.2% silicon, 0.5% manganese, 22% chromium, 3.8% aluminum, 0.4% titanium, 0.05% nitrogen, 0.2% molybdenum, 32% nickel, balance iron.

REFERENCES:
patent: 3969153 (1976-07-01), Suzuki et al.
patent: 4505232 (1985-03-01), Usami et al.

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