Packings Nutter Ring

Figure 9-6K. Nutter Ring (metal random packing). Used by permission of Nutter Engineering, Harsco Corp., Bull. NR-2.

Figure 9-18 plots HETP versus FP for optimized trays at 24-in. spacing, and No. 2 and No. 2.5 Nutter Rings and Intalox 2T structured packing. 

Nutter offers an improved high performance random packing identified as Nutter Ring, see Figure 9-6K. To achieve the best performance from any random packing, the liquid distributor must be level and the distributor points of the discharging liquid to the packing must be uniformly distributed, see earlier discussion on this topic. 

Plastic Nutter Rings are rigid and energy efficient, and permit applications to produce pressure drops per theoretical stage and bed heights, not attainable with other random particle packing. 

Figures 9-32A and B [98] illustrate the correlation of wet pressure drop and system vapor rate at various liquid rates for No. 2 Nutter rings however, other available data indicate that other sizes of Nutter rings, Pall rings, and selected other packing shapes correlate in the same manner.

Nutter, D. E., Nutter Rings , A Random Packed Developed for Consistent Performance, Inst, of Chem. Engrs. Sym. Series No. 104, (1987), p. A 129, Brighton, U.K. also presented at AI.Ch.E. Annual meeting, Miami Beach, Fla. Nov. (1986). 

Nutter Engineering, Harsco Corp. Nutter Ring Random Packing, Bulletin NR-2, and private communication. 

Optimized trays 5,24 165psia Optimized trays 165,300 400 psia - 2 2.5 Nutter ring Intalox 2T structured packing FRI/SRP data Intalox 2T structured packing Norton data ... 

Figure 7-8. Nutter ring random packing. Courtesy of Nutter Engineering.

Figure 8.3 Continued) Third-generation metal random packing, (c) Chempak id) Nutter Ring . Parts c and d, courtesy of Nutter Engineering Corp.)...

Figure 5-9. Relative deviation 8(Ap/H) of experimental data for determination of pressure drop (Ap/H)exp up to flooding point acc. to Eqs. (5-9) and (5-10), valid for plastic Nor-Pac packing by NSW and metal IMPT and Nutter rings by Sulzer. No. of system see Table 2-2. Test conditions see Table 5- la-c...

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... 

Figure 8.4 (Continued) Third-sene ration plastic random packings. (c) Jaeger Tri-Packs (Hackette ) (d) NOR-PAC (NSW rings). (Part c, courtesy of Jaeger Products, Inc. part d, courtesy of Nutter Engineering Corp.l...

Due to the need to use case-by-case analysis the Kister studies [136, 137] focused on item 1. The data evaluated came from published reports by Fractionation Research (FRI) and Separation Research Program (SRP) at the University of Texas, taken from commercial size equipment rather than laboratory research columns. The FRI data includes No. 2 and No. 2.5 Nutter random rings packing, aind Norton s Intalox 2T structured packing, each considered currently state-of-the-art or close to it, while the sieve and valve trays were of FRI s latest designs, plus Nutter s proprietary valve trays, all using 24-in. tray spacing. 

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