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Raschig rings

Among various packing materials in the market, carbon / graphite Raschig rings are distinguished by following characteristics :

  • They are unaffected by most violent thermal shocks.
  • They resist perfectly to almost all corrosive fluids used in industry, in particular to those which attack aluminium, silicate materials (hydrofluoric acid, boiling hydrochloric acid and hot caustics).
  • They are perfectly wetted by all liquids (aqueous solutions, molten salts, etc) and ensure, therefore, maximum efficiency at envisaged operation.
  • These highly remarkable qualities which characterize carbon / graphite Raschig  rings make them valuable auxiliaries in industries which require following treatments for their production :

                                       WASHING                              DRYING
                                       DISTILLATION                      RECTIFICATION

  • Prices of carbon / graphite Raschig rings are nearly half of S. S. tower packings.
  • Carbon Raschig rings have one third the weight of metal tower packings.
  • They have a crushing strength of 600 kg/cm2 and negligible porosity.
  • Normal recommended service usage :
    1. Caustic scrubbers – Merox units , in Isomerisation units for MSP ( EURO -III) for Refineries.
    2. Ethyl alcohol ( Sulphuric alkylation) stripping towers.
    3. HCL stripping towers – HCl tailend absorbers
    4. 70% sulphuric acid + 15% HF pre-scrubbing towers.
    5. Carbon dioxide absorption towers with M. E. A.
    6. High temp. weak sulphuric + HCl wash towers.
    7. Penex Units
    8. Weak Acid Cooling Towers

Current Dimensions
Approximate number
of rings per m2
Approximate Weight
in Kg per m2
Area in m2/m3
Percentage Of Voids
10/6    X 10
700,000
650
440
73
13/8 X 15
310,000
600
350
72
19/13 X 19
107,000
480
240
73
25.4/18 X 25.4
46,000
480
195
73
40/30 X 40
12,300
500
115
68
50/40 X 50
5,800
420
95
74
60/45 X 60
3,300
440
78
72
80/60 X 80
1,650
520
60
74
100/80 X 100
750
400
45
74
120/100 X 120
450
400
35
74


(*) On request and for large quantities, we can envisage the manufacture of rings of different dimentions.

  • We can also supply carbon / graphite Raschig rings to our customer’s specifications.

Consult us for all your problems of column packing!


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