Solvent/feed ratio

Shell process. Universal Oil Pro-ducts sulfolane sulfolane selectivity and capacity insensitive to water content caused by steam-stripping during solvent recov-ery heavy paraffinic countersolvent use 120 rotating-disk contactor, up to 4 m in diameter the high selectivity and capacity of sulfolane leads to low solvent-feed ratios, and thus smaller equip-ment... 

Figure 8.1-7. Comparison between compressor- and pump-mode operation for fish oil extraction with different solvent/feed ratios.

Figure 8.1-8. Return on Investment (ROI) for the compressor process of fish-oil fractionation at different solvent/feed ratios, depending on variable benefits per kg of product.

Either the solvent feed ratio or the compositions Ej and RN serve to locate the mix point M. 

Both maximum and minimum limits exist of the solvent/feed ratio. The maximum is the value that locates the mix point M on the binodal curve near the solvent vertex, such as point Mmla on Figure 14.7(b). When an operating line coincides with a tieline, the number of stages will be infinite and will correspond to the minimum solvent/feed ratio. The pinch point is determined by the intersection of some tieline with line RnS- Depending on whether the slopes of the tielines are negative or positive, the intersection that is closest or farthest from the solvent vertex locates the operating point for minimum solvent. Figure 14.9 shows the two... 

The mix point is located by establishing the solvent/feed ratio. 

As the solvent/feed ratio is increased, the mix point M approaches the solvent point S, and poles P and Q likewise do so. At total reflux all of the points P, Q, S, SE, and M coincide this is shown in Figure 14.7(b). 

The specified feed F and the desired extract E1 and raffinate RN compositions are shown. The solvent/feed ratio is in the ratio of the line segments MS IMF, where the location of point M is shown as the intersection of lines and FS. 

The PDU results from the LC-Fining program on coal extracts were encouraging. DOE extended the original contract twice in order to accomodate an expanded scope of work. Several different types of bituminous and sub-bituminous coal extracts were successfully processed in the PDU. Various extract to solvent feed ratios were used over a wide range of process conditions in runs... 

Figure 3. SCF Spray extraction depending Figure 4. Drop size distribution for spraying on solvent/feed ratio of liquids with SC-CO2...

Figure 2. Effect of solvent-feed ratio on product purity in the extractive distillation of aqueous ethanol with ethylene glycol...

At the reflux-feed ratio of 1.5545 the water content of the top product, ethanol, is near the minimum for each solvent-feed ratio shown. For this reflux-feed ratio, the water content of the top product has been plotted vs. the ethylene glycol-ethanol ratios in Figure 2. This curve... 

Figure 3. Reboiler and condenser heat loads vs. solvent-feed ratio...

Changing the recovery of ethanol from 99-99.99%m produces only minor increases in the heat loads. A summary of the column material balance for one mole of feed is shown in Table V when the solvent-feed ratio is 3.5 mole basis. This calculation was made for a recovery of 99.99% ra ethanol using 46 equilibrium trays with the solvent on 43 and the feed on 22. The reflux-feed ratio was 1.5537 mole basis. The corresponding data for temperature, composition, and volatility profiles are summarized in Table VI. 

Figure 6. Variation of the number of equilibrium stages and solvent/ feed ratio in the primary column with selectivity...

Both maximum and minimum limits exist of the solvent/feed ratio. The maximum is the value that locates the mix point M on the binodal curve near the solvent vertex, such as point on Figure... 

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