Rings, packing

The purified sodium phenolate solution is then decomposed by passing it down ring-packed or coke-fiUed towers at 80—85°C countercurrent to a... 

Secondary Packing Much more emphasis should be placed on secondary packing especially if Teflon is used. A wide variation in performance is seen between various seal vendors, depending on seal arrangement there can be difference in mating ring packing. 

The first term is a film number the second is the Fronde number. The equation apphes to ring packings only operating below the load point and correlates all literature data to about 20 percent. 

Ethylene Glycol Bronze Bronze 18-8 18-8 Ring Packing Bronze ... 

Sulfuric Acid, Below 55% Hard Rubber Lined C.l. Special Rubber Carbon Steel Hastelloy C Ring Packing Special Rubber Special Rubber... 

Sulfuric Acid, 55 to 95% Cast Si-Iron Si-Iron Type 316 Stn. StI. Si-Iron Ring Packing Teflon Si-Iron... 

Styrene Cast Iron Cast Iron Carbon Steel 13% Chrome Steel Ring Packing Cast Iron Mall. Iron... 

A five-membered heterocyclic ring packs a relatively large number of polarized bonds into a relatively small molecular space. This provides a convenient framework to which to attach necessary side chains. In some cases, the framework itself is believed to be part of the pharmacophore. 

Brine (Sodium Chloride) Ni-Resist Ni-Resist K Monel K Monel Ring Packing... 

Caustic, 50% (Max. Temp. 200° F.) Misco C Misco C 18-8 Stainless Steel Misco C Ring Packing... 

Caustic, 50% (Over 200° F) 73% Nickel Nickel Nickel or 18-8 Stainless Steel Nickel Ring Packing... 

Caustic, 10% (with some sodium chloride) Cast iron 23% Cr. 52% Ni Stainless Steel 23% Cr. 52% Ni Stainless Steel 23% Cr. 52% Ni Stainless Steel Ring Packing... 

Hydrochloric Acid, 32% (Alternate) Rubber Lined C. Iron Hard Rubber Carbon Steel Rubber or Plastic Ring Packing... 

Water, Isea Casing, 1-2% Ni, Cr 3-0.5% Cast Iron Rings Ni-Resist, 2B Impeller Monel Rings S-Monel K Monel (Aged) K Monel or Alloy 20 SS Ring Packing... 

Relations expressing the fractional voids in a ring packed bed are useful in estimated the e values for a/e determinations [47]. The average deviation is 2.6%. 

When considering pressure drop models based only on water, hydrocarbons system capacity can be significantly overstated. For Nutter random ring packings the pressure drop/capacity models fit the data within +10% over the range of commercial interest, i.e., 0.1 to 1.0 in. water/ft of packing. Pressure drop alues for design operation should... 

Tower Diameter = 12 Packing =3/4" Roschig Rings Packed Height = 16 ... 

There are three different substituted benzene compounds with the formula C6H4F2. Assume that the benzene rings pack similarly into their crystal lattices. If the positions of the H and F atoms are statistically disordered in the solid state, which isomer will have the least residual molar entropy ... 

Some values of S and e for different beds of particles are listed in Table 4.1. Values of e much higher than those shown in Table 4.1, sometimes up to about 0.95, are possible in beds of fibres 3 1 and some ring packings. For a given shape of particle, S increases as the particle size is reduced, as shown in Table 4.1. 

For flow through ring packings which as described later are often used in industrial packed columns, Ergun(10) obtained a good semi-empirical correlation for pressure drop as follows ... 

Borden, H. M. and Squires, W. Massachusetts Institute of Technology, S. M. thesis (1937). Absorption of ammonia in a ring-packed tower, (cited in Reference 30). 

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