• Author / Uploaded
• Thomy Vollmer

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4 Q evaporator Qcrystallizer

37525.33333 KW 265.6948564 KW

1

2

Feed Flow Rate 60000 kg/h Temperature 25 C Concentration 3.5 % dissolved salt 2100 kg Pressure 70 kPa

Pressure at 2 = 101 kPa

3 Steam Flow rate Temperature Pressure

61352.105 kg/h 120 C 200 kPa

Dissolved salt 35 g/L in sea water Composition Parts per thousand Percentage % Chloride 19.345 55.03

Sodium Sulfate Magnesium Calcium Potassium Bicarbonate Bromide Borate Strontium Fluoride Other Total

10.752 30.59 2.701 7.68 1.295 3.68 0.416 1.18 0.39 1.11 0.145 0.41 0.066 0.19 0.027 0.08 0.013 0.04 0.001 0.003 less than 0.001 less than 0.001 35.151 99.993

Condensate flowrate temperature Vapor flowrate

5

Evaporator

61352.105 100 C

51600

6

8

Separation

Chemical Reactor

Concentrated Brine Flowrate Temperature Concentration Pressure

8400 100 25 101

kg/h C % kPa

H2SO4 5M 7 NaOH 1M Flowrate Temperature

11 2576 kg/h 25 C

Flowrate temperature

2318.4 Solid Mg(OH)2 at Stream 10

g/L in sea water mol 0.272464789

component Chloride

186.76

Stream 6 composition kilograms mass fraction total Kmol/h 1155.63 0.137575 16.2764789

0.467478261 0.042203125 0.053958333 0.0104 0.01 0.002377049 0.000826033 0.000465517 0.000148402 5.26316E-05 0 0.86037414

Sodium Sulfate Magnesium Calcium Potassium Bicarbonate Bromide Borate Strontium Fluoride Water

642.39 161.28 77.28 24.78 23.31 8.61 3.99 1.68 0.84 0.063 6300.147

0.076475 0.0192 0.0092 0.00295 0.002775 0.001025 0.000475 0.0002 0.0001 7.5E-06 0.750018

27.93 2.52 3.22 0.6195 0.59769231 0.14114754 0.04993742 0.02896552 0.00958904 0.00331579 88.7344648

Flowrate

Mole of water at stream 12 Mole of water needed for crystallization excess water to be evaporated or

10789.24 kg/h

Side Product

Separation

Temperature at stream 12

9 Temperature Flowrate Vapor

Mg(OH)2 10

13

12 Chemical Reactor

986.125 kg/h 25 C

kg/h

Steam Temperature Flowrate Pressure

15

150 C 434.398239 kg/h 200 kPa

12 Crystallizer

28666.66667 71333.3333 42666.6667 14000

43.6936111 22.54 21.1536111 380.765

water needed for crystallization ter to be evaporated

Kmol/h Kmol/h Kmol/h kg/h

80 C

100 C 380.765 kg/h

14 MgSO4.7H2O amount of solid MgSO4.7H2O

16 Condensate

792.12 kg/h

3500 0.049065421 3500 0.08203125 3500 0.25

Steam Pressure Temperature Flowrate

200 kPa

Feed 50000 kg/h

Feed

Feed 25000 kg/h

25000 kg/h

hF Temperature Flowrate xF

-310.5 25 C 60000 kg/h 0.035 Feed

Steam Ts Ps Flowrate

120 C 200 kPa 61352.105 kg/h

Flowrate x1 T1

Vapor Flowrate T1 Hv

51600 373 K 2257 kJ/kg

P1

101 kPa Condensate

Flowrate lamda

61352.105 2201.9 kJ/kg

Brine 8400 kg/h 0.25 373 K

hF Temperature Flowrate xF

Vapor Flowrate T1 Hv

-82.8 80 C 1172.885 kg/h 0.035 Feed

P1

Steam Ts Ps Flowrate

120 C 200 kPa 434.398239 kg/h

Flowrate lamda

solid Flowrate x1 T1

792.12 0.25 373

380.765 373 K 2257 kJ/kg

101 kPa Condensate 434.398239 2201.9 kJ/kg

kg/h K

Feed 60000 kg/h NaOH 2576 kg/h H2SO4 986.125 kg/h Steam evaporator 61352.105 kg/h Steam Crystallizer 434.398239 kg/h

Total

125348.628

Side Product 10789.24 kg/h MgSO4.7H2O 792.12 kg/h

Condensate evaporator 61352.105 kg/h Condensate crystallizer 434.398239 kg/h Vapor evaporator 51600 kg/h Vapor 380.765 kg/h Total

125348.628