<content> Basic Scheme </content>

11475f63-a5ed-42fa-bd0f-6c3d3cb4a686 96 3 5 false false false 0 3 decimal

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Calculating HCl Recycle Flow

Furnace.Cl2.load 550800600 range m 3^hr / * : m 3^hr / 55060065070075080061 mat

ρ.Cl2 3.15 kg m 3^/ * :

ρ.H2O 1 tonne m 3^/ * :

HCl.gas.prod 36.5 35.5 / ρ.Cl2 * Furnace.Cl2.load * : tonne hr / 1.7813 1.9432 2.1052 2.2671 2.429 2.591 61 mat

HCl.aq.3 HCl.gas.prod 0.31 / : tonne hr / 5.7461 6.2685 6.7909 7.3133 7.8356 8.358 61 mat

from DCS observations in comparison with Water.ideal.1 Leakage.H2O.6 1.6 tonne hr / * :

Water.ideal.1 n 1 HCl.gas.prod length range a n el HCl.gas.prod n el HCl.gas.prod n el x tonne hr / * + / 0.31 ≡ x solve : for a tonne hr / * 21 line : tonne hr / 3.9648 4.3253 4.6857 5.0462 5.4066 5.767 61 mat

w.t% diluted acid maintained in tank because of scrubber & recycle 4. This enters tail-gas absorber DiluteAcid.real.1 0 0.14 0.02 range : % 0246810121481 mat

<content> Basic Scheme </content>

Total.H2O.Entering Leakage.H2O.6 x tonne hr / * 1 DiluteAcid.real.1 6 el - (* + : tonne hr / 169 x * + 10 /

Total.HCl.gas.Entering HCl.gas.prod 6 el x tonne hr / * DiluteAcid.real.1 6 el (* + : tonne hr / 9198355 x * + 3550 /

Total.HCl.gas.Entering Total.HCl.gas.Entering Total.H2O.Entering + / 0.31 ≡ x solve tonne hr / * tonne hr / 6.1513

DiluteAcidFeed.real.1 m 1 DiluteAcid.real.1 length range ΣH2O.feed m el Leakage.H2O.6 x tonne hr / * 1 DiluteAcid.real.1 m el - (* + : n 1 HCl.gas.prod length range ΣHCl.feed n el HCl.gas.prod n el x tonne hr / * DiluteAcid.real.1 m el * + : a m n el ΣHCl.feed n el ΣHCl.feed n el ΣH2O.feed m el + / 0.31 ≡ x solve : 21 line for 21 line for a tonne hr / * 21 line :

<content> deNest Function </content>

deNest("matrix") - Expand the nested matrix A.This makes the composition of matrices by sub-matrices more readable. A deNest i.Row 1 A rows range A.newRow Clear i.Col 1 A cols range A.newRow IsDefined A.newRow A.newRow A i.Row i.Col el augment : A.newRow A i.Row i.Col el : if for A.new IsDefined A.new A.new A.newRow stack : A.new A.newRow : if 31 line for A.new 21 line :

Table horizontal Diluted Feed% ↓ | Cl2 Load m³/h → DiluteAcid.real.1 100 * stack : vertical Furnace.Cl2.load transpose 36001 / * s m 3^/ * DiluteAcidFeed.real.1 36001000 / * s kg / * stack : horizontal vertical augment 31 line :

Table Diluted Feed% ↓ | Cl2 Load m³/h → 5506006507007508000 2.36 2.73 3.09 3.45 3.81 4.17 2 2.53 2.91 3.3 3.68 4.07 4.45 4 2.72 3.13 3.54 3.96 4.37 4.78 6 2.93 3.38 3.83 4.27 4.72 5.17 8 3.19 3.67 4.16 4.64 5.13 5.62 10 3.49 4.02 4.56 5.09 5.62 6.15 12 3.86 4.45 5.03 5.62 6.21 6.8 14 4.31 4.97 5.63 6.28 6.94 7.6 97 mat

Plotting curves for various furnace Cl2 loading n 1 DiluteAcidFeed.real.1 cols range y n el DiluteAcidFeed.real.1 36001000 / * s kg / * n col : plot n el DiluteAcid.real.1 100 * y n el augment : label n el 14 y n el 8 el Furnace.Cl2.load n el 3600 * s m 3^/ * var2str 8 augment : 31 line for 11 line

Furnace.Cl2.load 3600 1 / * s m 3 ^ / * Water.ideal.1 3600 1000 / * s kg / * augment 1 1 sys plot label deNest 2 1 sys

Balance around production water tank

DiluteAcid.Feedvol.1 37 range tonne hr / * : tonne hr / 3456751 mat

DiluteAcid.FeedConc.1 0.02 0.10 0.04 range : % 24681051 mat

PureWater.Feedvol.2 a tonne hr / * :

Acid.Feedvol.4 b tonne hr / * :

Acid.FeedConc.4 0.31 :

<content> Basic Scheme </content>

WaterBalance.1 Acid.Feedvol.4 1 Acid.FeedConc.4 - (* PureWater.Feedvol.2 + DiluteAcid.Feedvol.1 4 el 1 DiluteAcid.FeedConc.1 5 el - (* - :

WaterBalance.1 tonne hr / 69 b * 100 a * + 540 - 100 /

AcidBalance.2 Acid.Feedvol.4 Acid.FeedConc.4 * DiluteAcid.Feedvol.1 4 el DiluteAcid.FeedConc.1 5 el * - :

AcidBalance.2 tonne hr / 60 - 31 b * + 100 /

a b 21 mat WaterBalance.1 AcidBalance.2 21 mat a b 21 mat roots : 4.065 1.935 21 mat

a b Clear 1

var m 1 DiluteAcid.Feedvol.1 length range n 1 DiluteAcid.FeedConc.1 length range WB m n el Acid.Feedvol.4 1 Acid.FeedConc.4 - (* PureWater.Feedvol.2 + DiluteAcid.Feedvol.1 m el 1 DiluteAcid.FeedConc.1 n el - (* - : AB m n el Acid.Feedvol.4 Acid.FeedConc.4 * DiluteAcid.Feedvol.1 m el DiluteAcid.FeedConc.1 n el * - : j m n el k m n el 21 mat WB m n el AB m n el 21 mat a b 21 mat roots : 31 line for 11 line for j k 21 mat 21 line :

PureWater.Feedvol.2 Acid.Feedvol.4 21 mat var 1 el tonne hr / * var 2 el tonne hr / * 21 mat : tonne hr / 2.806 2.613 2.419 2.226 2.032 3.742 3.484 3.226 2.968 2.71 4.677 4.355 4.032 3.71 3.387 5.613 5.226 4.839 4.452 4.065 6.548 6.097 5.645 5.194 4.742 55 mat 0.194 0.387 0.581 0.774 0.968 0.258 0.516 0.774 1.032 1.29 0.323 0.645 0.968 1.29 1.613 0.387 0.774 1.161 1.548 1.935 0.452 0.903 1.355 1.806 2.258 55 mat 21 mat

RecycleAcid.31% horizontal Feed flow tonne/hr ↓ | Feed HCl% → DiluteAcid.FeedConc.1 transpose 100 * augment : vertical DiluteAcid.Feedvol.1 hr tonne / * Acid.Feedvol.4 hr tonne / * augment : horizontal vertical stack 31 line :

PureWater.Feed horizontal Feed flow tonne/hr ↓ | Feed HCl% → DiluteAcid.FeedConc.1 transpose 100 * augment : vertical DiluteAcid.Feedvol.1 hr tonne / * PureWater.Feedvol.2 hr tonne / * augment : horizontal vertical stack 31 line :

RecycleAcid.31% Feed flow tonne/hr ↓ | Feed HCl% → 2468103 0.194 0.387 0.581 0.774 0.968 4 0.258 0.516 0.774 1.032 1.29 5 0.323 0.645 0.968 1.29 1.613 6 0.387 0.774 1.161 1.548 1.935 7 0.452 0.903 1.355 1.806 2.258 66 mat

PureWater.Feed Feed flow tonne/hr ↓ | Feed HCl% → 2468103 2.806 2.613 2.419 2.226 2.032 4 3.742 3.484 3.226 2.968 2.71 5 4.677 4.355 4.032 3.71 3.387 6 5.613 5.226 4.839 4.452 4.065 7 6.548 6.097 5.645 5.194 4.742 66 mat