Page 126 - Applied Process Design For Chemical And Petrochemical Plants Volume III

66131_Ludwig_CH10D 5/30/2001 4:29 PM Page 92

92 Applied Process Design for Chemical and Petrochemical Plants

Table 10-15
Overall Coefficients in Typical Petrochemical Applications
U, Overall Coefficient, Btu/(hr) (ft )(°F)
2
Overall Estimated Fouling
In Outside Type Velocities, Ft/Sec Coeffi- Temp. Over-
Tubes Tubes Equipment Tube Shell cient Range, °F Tube Shell all
A. Heating-Cooling
Butadiene mix. (super-heating) Steam H 25—35 . . . 12 400—100 . . . . . . 0.04
Solvent Solvent H . . . 1.0—1.8 35—40 110—300 . . . . . . 0.0065
Solvent Propylene (vaporization) K 1—2 ... 30—40 40—00 . . . . . . 0.006
C 4 unsaturates Propylene (vaporization) K 20—40 . . . 13—18 100—350 . . . . . . 0.005
Solvent Chilled water H . . . . . . 35—75 115—400 0.003 0.001 . . .
Oil Oil H ... ... 60—85 150—100 0.0015 0.0015 . . .
Ethylene-vapor Condensate and vapor K . . . . . . 090—125 600—200 0.002 0.001 . . .
Ethylene vapor Chilled water H . . . . . . 50—80 270—100 0.001 0.001 . . .
Condensate Propylene (refrigerant) K—U ... ... 060–135 60—30 0.001 0.001 . . .
Chilled water Transformer oil H . . . . . . 40—75 75—50 0.001 0.001 . . .
Calcium brine-25% Chlorinated C 1 H 1–2 0.5—1.0 40—60 20— 10 0.002 0.005 . . .
Ethylene liquid Ethylene vapor K—U ... ... 10—20 00 170—( 100) . . . . . . 0.002
Propane vapor Propane liquid H . . . . . . 06—15 25—1001 . . . . . . 0.002
Lights and chlor. HC Steam U . . . . . . 12—30 30—2601 0.001 0.001 . . .
Unsat. light HC, CO, CO 2 , H 2 Steam H ... ... 10—20 400—100 ... . .. 0.3
Ethanolamine Steam H . . . . . . 15—25 400—400 0.001 0.001 . . .
Steam Air mixture U ... ... 10—20 30—220 0.0005 0.0015 . . .
Steam Styrene and tars U (in tank) . . . . . . 50—60 190—230 0.001 0.002 . . .
Chilled water Freon-12 H 4—7 ... 100—130 90—25 0.001 0.001 . . .
Water* Lean copper solvent H 4—5 ... 100—120 180—900 . . . . . . 0.004
Water Treated water H 3—5 1—2 100—125 090—110 . . . . . . 0.005
Water C 2 -chlor. HC, lights H 2—3 ... 06—10 360—100 0.002 0.001 . . .
Water Hydrogen chloride H . . . . . . 07—15 230—900 0.002 0.001 . . .
Water Heavy C 2 -chlor. H ... ... 45—30 300—900 0.001 0.001 . . .
Water Perchlorethylene H . . . . . . 55—35 150—900 0.001 0.001 . . .
Water Air and water vapor H . . . . . . 20—35 370—900 0.0015 0.0015 . . .
Water Engine jacket water H . . . . . . 230—160 175—900 0.0015 0.001 . . .
Water Absorption oil H . . . . . . 080—115 130—900 0.0015 0.001 . . .
Water Air-chlorine U 4—7 ... 08—18 250—900 . . . . . . 0.005
Water Treated water H 5—7 ... 170—225 200—900 0.001 0.001 . . .
B. Condensing
C 4 unsat. Propylene refrig. K v . . . 58—68 60—35 . . . . . . 0.005
HC unsat. lights Propylene refrig. K v . . . 50—60 45—30 . . . . . . 0.0055
Butadiene Propylene refrig. K v . . . 65—80 20—35 . . . . . . 0.004
Hydrogen chloride Propylene refrig. H . . . . . . 110—600 00—15 0.012 0.001 . . .
Lights and chloro-ethanes Propylene refrig. KU . . . . . . 15—25 00130—( 20) 0.002 0.001 . . .
Ethylene Propylene refrig. KU . . . . . . 60—90 00120—( 10) 0.001 0.001 . . .
Unsat. Chloro HC Water H 7—8 ... 090—120 145—900 0.002 0.001 . . .
Unsat. Chloro HC Water H 3—8 ... 180—140 110—900 0.001 0.001 . . .
Unsat. Chloro HC Water H 6 . . . 15—25 00130—( 20) 0.002 0.001 . . .
Chloro-HC Water KU . . . . . . 20—30 00110—( 10) 0.001 0.001 . . .
Solvent and noncond. Water H . . . . . . 25—15 260—900 0.0015 0.004 . . .
Water Propylene vapor H 2—3 ... 130—150 200—900 . . . . . . 0.003
Water Propylene H . . . . . . 060—100 130—900 0.0015 0.001 . . .
Water Steam H ... ... 225—110 300—900 0.002 0.0001 . . .
Water Steam H ... ... 190—235 230—130 0.0015 0.001 . . .
Treated water Steam (exhaust) H . . . . . . 20—30 220—130 0.0001 0.0001 . . .
Oil Steam H ... ... 070—110 375—130 0.003 0.001 . . .
Water Propylene cooling and cond. H . . . . . . 25—50 000130—45 (C)
{ 0.0015 0.001 . . .
110—150 0000015—20 (Co)