Fresh Air gas cleaning unit

Fresh Air gas cleaning unit

 

11.4. Gas cleaning unitCONTENTS OF DELIVERY

  • Four-section absorber (main part);
  • Support columns;
  • Tank of circulating solutions with feed pumps;
  • Sludge catcher tank with sludge remover;
  • Reagent tank with master absorbing solution;
  • Water tank;
  • Set of operational documentation;

* The distribution unit of sprayed solutions is conventionally not shown;

** The unit of PH-control and dosing of absorbent solutions is conventionally not shown;

 

The body of the absorber consists of a bottom (input) part, a scrubber, a spraying unit of chemicals and an output part with a spraying system and a drop catcher.

The Fresh Air body assembled from the required number of sections is mounted on the support columns.

The Fresh Air unit has a possibility to install an additional insert up to 4 meters on the output section capping if it is necessary to increase the height of the emission point for neat process gases.

 

Performance Characteristics

Characteristics Values
Fresh Air – 30 Fresh Air -60 Fresh Air –100  

Fresh Air -120

 

1  

Capacity for incoming process gases, thousand m3/h:

– nominal

30 60 100 120
– maximum 40 80 130 150
2 Temperature of incoming process gases, °C:

– minimal

20 20 20 20
– nominal

 

160 170 180 190
– maximum 260 270 280 290
3  Suspended solids (soot) in incoming process gases (dust), g/m3:

– nominal

0.060 0.080 0.090 0.90
– maximum 0.200 0.300 0.350 0.400
4  Dimensions (reference), m:

– maximum diameter,

 

 

2.8

 

3.7

 

4.2

 

4.5

– standard height 15.0 18.5 21.0 24.0

 

– dimension over supports 2.6×2.6 3.2×3.2 3.8×3.8 4.5×4.5
5  Weight, not more, t:

 

– metal structures 10.0

 

16.2

 

22.0

 

 

26.0

 

 

– complete (with solutions) 17.0 24.5 32.0 40.0
6  Hydrodynamic resistance (nominal), Pa 1400 1400 1400 1500

 

 

 

The outer and inner surfaces of bodies, structures and assemblies of the Fresh Air unit have

a paint coating with weather resistant paint. Сoating is not applied for stainless steel structures.

 

List of main pollutants recovered from process gases

п/п

Extracting compound Extraction grade Extraction form
1 Aerosols of metals and their compounds (Сu, РЬ, Zn, Cd, Со, Fe, Ni, Al, Ca, Mg) 99,9 Low soluble and insoluble aqueous carbonate-silicates of metals in mixture with hydrates and oxides
 

2

OXIDES

Intermediate degrees of oxidation NOx

99,97 Carbamide recovery up to N2 and С02, Н20
 

3

Gases:

S02, Cl2, F2, H2S etc.

99,99 Capture by alkaline solutions in chloride, fluoride, phosphate sulfatosulfite, etc. forms (NaCl, NaF, Na2S04, CaS04, SO)

 

Effectiveness of a Fresh Air unit for dust removal

 

Average dust content, (%)

Dust collection efficiency, %
Fresh Air-30 Fresh Air-60 Fresh Air-100 Fresh Air-120
70% – (0.000 – 0.044) mm 99.7 99.5 99.4 99.3
20% – (0.044 – 0.074) mm 99.9 99.8 99.7 99.6
8% – (0.074- 0.100) mm 100 100 99.8 99.7
2% – (more than 0.100) mm 100 100 100 100

 

11.1 Установка газоочистки 11.2 Установка газоочистки 11.3 Установка газоочистки