Page 263 - Pressure Vessel Design Manual

Special Designs 241

0 Circumferential stres in lining at hot face, cL4. 0 Deflection due to dead weight alone, 6.

ffL4 = ffL1 - ffL2 + ffL3 (19 5wL4
A=-
0 Circumferential stress in lining at cold face, mL5. 384E,,I

ffL5 = ffL1 + ffI.2 - ffL3 (20
0 Deflection due to concentrated load, 6.
0 Circumferential stress in shell caused by lining, ubc
(21 X=- L1
L

Stress and Deflection Due to External loads

Ta-.2 4- 2
Properties of Refractory Materials
Material
Properties At Temperature (OF) ~~-22s RS-3 RS-6 RS-7 RS-17EC
Modulus of elasticity, E (105psi) 230 47 2.1 4.1 3.7 18.9
500 35 1.5 2.94 2.7 16.8
1000 16.5 0.84 1.62 1.5 15.5
1500 7.9 0.5 0.93 0.8 14.1
Density, d (pcf) 170 60 75-85 85-95 130-1 35

Thermal conductivity, K (BTUhlhrIsq WF) 500 1.7 2.7 2.5 10
1000 10.3 1.65 2.85 2.8 6.3
1500 10.4 1.8 3 3.2 6.9
2000 10.6 3.2 2 7.7
Coefficient of thermal expansion
(10-6in./in./oF) 4.7 4.4 4.7 3.5
Poisson's ratio 0.16

0.24
Specific heat (BTUIIbPF) 1500 -0.1 TO -0.5 -0.3 TO -0.7 -0.1 TO -0.3 -0.2 TO -0.4 -0.1 TO -0.3
c 2000 -0.4 TO -1.1 -0.5 TO -1.1 -0.8 TO -1.2 -0.4 TO -0.6 -0.1 TO -0.3
% Permanent linear change

100
200
1000
1400
1500-1 900
200-300
200-500
1400-1 800
300-700
100-200
1500
140c-2200
200-500
200-500
1000
300
Cold crush strength (psi) 2000 8000-12000 150-250 1500 600-1 000 9000-1 2000
1500 7500-1 0000 300-600 1500-1 800 700-1 100 8000-1 1000
2000 7000-1 0000 500-800 1200-1 600 600-1 000 9000-1 2000
Allowable compressive stress (psi) 1000 4000 150 750 400 5000
Allowable tensile stress (psi) 1000 I 560 40 80 I 100 1 680