raschig super-ring

More documents

Recommendations

Info

RASCHIG SUPER-RINGProven in Practice and FRI testedThe revolutionary idea behind the design of the RaschigSuper-Ring has now also led to exceptionally good masstransfer efficiencies, pressure drops and loadingcapacities in the FRI test facility. The structure of theRaschig Super-Ring is the first to pursue the objective ofproducing turbulent film-type flows and to preventformation of drops. The large number of alternating waveswings also achieves large turbulences in the gas andliquid flows while at the same time it has an extremelyopen geometry.Owing to the fluidically optimized shape of the RaschigSuper-Ring, the randomly dumped packed bedautomatically obtains a structure otherwise found only inthe case of structured packings.1
RASCHIG SUPER-RINGProven in Practice and FRI testedFig. 1 provides information on the measured mass transfer efficiencies of theRaschig Super-Ring for the cyclohexane/n-heptane system at 1.65 bar and forisobutane/n-butane at 6.8 bar and 11.4 bar. The mass transfer efficiency of theRaschig Super-Ring is therefore not only better than the previous modern packingsbut also more favorable than that of structured packings with a comparable surfacearea. (Further information on request). Due to the malfunction of the distributor themass transfer efficiency drops already previously which is mentioned in the figureas "unstable test conditions".HETP, inchesHETP, inchesRaschig-Super Ring No. 2 EfficiencyC6/C7 System, 24 psia (1.65 bar), F.R.I. High Pressure Column, 12 ft (3.66 m) BedF.R.I. Tubed Drip Pan 6.5 mm TubesGas Capacity Factor Fv [m/s (kg/m³) 0.5 ]0,00 0,50 1,00 1,50 2,00 2,50 3,00100,090,0Distributor overflow2,502,2580,02,0070,0Heavy condensation outsidedistributor pan1,7560,01,5050,01,2540,01,0030,0Unstable testconditions0,7520,00,5010,00,250,00,000,00 0,05 0,10 0,15 0,20 0,25 0,30 0,35 0,40Super Ring, Dist.-DCCapacity Factor Cs, ft/sSuper Ring, Dist.-Below bedRaschig-Super Ring No. 2 EfficiencyiC4/nC4 System 165 psia (11.4 bar), F.R.I. High Pressure Column, 12 ft (3.66 m) BedF.R.I. Tubed Drip Pan 10 mm TubesCapacity Factor Fv [m/s (kg/m³) 0.5 ]0,00 0,25 0,50 0,75 1,00 1,25 1,50 1,75110,0100,02,752,5090,02,25Heavy condensation outside80,0distributor pan2,0070,01,7560,01,5050,01,2540,0Poor Liquid Distributor Performance1,0030,00,7520,0Unstable test0,50conditions10,00,250,00,000,00 0,05 0,10 0,15 0,20 0,25 0,30Capacity Factor C s, ft/sSuper Ring, Dist.-Below bedSuper Ring, Dist.-DCHETP, mHETP, mHETP, inchesRaschig-Super Ring No. 2 EfficiencyiC4/nC4 System 100 psia (6.89 bar), F.R.I. High Pressure Column, 12 ft (3.66 m) BedF.R.I. Tubed Drip Pan 10 mm TubesCapacity Factor Fv [m/s (kg/m³) 0.5 ]0,00 0,25 0,50 0,75 1,00 1,25 1,50 1,75 2,00 2,25100,090,02,502,2580,02,0070,0Heavy fog creation outside distributor pan1,7560,01,5050,01,25Poor Liquid Distributor Performance40,01,0030,00,7520,0Unstable test 0,5010,0conditions0,250,00,000,00 0,05 0,10 0,15 0,20 0,25 0,30 0,35Capacity Factor C s, ft/sSuper Ring, Dist.-Below bedSuper Ring, Dist.-DCHETP, m2
Page 1: RASCHIG SUPER-RINGProven in Practic
Page 6 and 7: RASCHIG SUPER-RINGProven in Practic
Page 8: RASCHIG SUPER-RINGProven in Practic

raschig super-ring

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?