Solvent Recovery, Distillation and Stripping

Solvent Recovery

In most circumstances the recovery of solvents from industrial process emissions is both financially and ecologically desirable. Indeed, current european legislative policy states that the preferred method for the control of VOC emissions is recovery.


The technological philosophy of the company supports the legislation, recovering an expensive resource for re-use - the 'friendly' option - whilst offering a return on investment in some cases as little as one year.

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Physical Data Table

Solvent

 Molecular
Weight		 Boiling
Point °C		 Lower Explosive Limit
Vol % at 293k		 LEL @ 25°C g/m³ Solubility in water
at 20°C % wt		 Emission Limit as Solvent Equivalent
to 50mgC/m³
  ppm v/v mg/m³
Acetone 58 56 2.15 55.7 completely 31 80
Benzene 78 80 1.40 42.2 0.08 15 54
n-Butyl Acetate 116 126 1.70 88.0 1.0 15 80
n-Butyl Alcohol 74 118 1.45 47.9 7.8 23 77
iso-Butyl Alcohol 74 108 1.68 55.5 8.5 23 77
Carbon Tetrachloride 154 77 non-flammable   0.08 94 650
Chloroform 119 61 non-flammable   0.8 93 495
Cyclo-hexane 84 80 1.35 45.4 <0.001 15 58
Cyclohexanone 98 156 3.20 140 2.3 15 68
1.2 Dichloroethane 99 84 6.2 255 0.87 47 206
1.1 Dichloroethane 97 37 9.7 420 0.021 47 202
Ethyl Acetate 88 77 2.25 80.5 7.9 23 91
Ethyl Alcohol 46 78 3.3 63.1 completely 46 95
n-Heptane 100 98 1.05 43.7 0.005 13 59
n-Hexane 86 69 1.25 42.9 0.014 15 59
Methyl Alcohol 32 65 6.72 89.2 completely 93 133
Methyl Ethyl Ketone 72 80 1.81 58.2 26 23 75
Methyl iso-Butyl Ketone 102 116 1.4 58.2 1.7 15 69
Methylene Chloride 85 41 non-flammable   2.0 92 350
n-Pentane 72 36 1.3 38.4 0.036 19 60
Perchloroethylene 166 121 non-flammable   0.04 46 345
n-Propyl Acetate 102 101 2.0 91.1 1.8 18 85
iso-Propyl Acetate 102 89 2.0 91.1 2.9 18 85
n-Propyl Alcohol 60 97 2.15 57.6 completely 30 83
iso-Propyl Alcohol 60 82 2.02 54.1 completely 30 83
iso-Propyl Ether 102 68 1.3 55.2 0.9 15 70
Styrene 104 145 1.1 46.9 0.025 12 54
Tetrahydrofuran 72 66 1.84 59.0 completely 23 75
Toluene 92 111 1.3 53.3 0.047 13 54
1,1,1, Trichloroethane 133 74 non-flammable   0.17 46 275
Trichloroethylene 131 87 12 653.9 0.1 46 272
Xylene 106 138-144 1.0 47.3 <0.001 11 55
Vinyl Chloride 62 -13       46 129