Stripping factor, defined

Similarly a stripping factor for each component is defined as... 

This equation can be put into a more useful form. The stripping factor X is defined as the ratio of the slope of the equilibrium line to that of the operating line ... 

This assumption is more restrictive than the assumption of constant relative volatilities, or relative X-values, that is used in the Fenske and Underwood methods. The payback for this assumption is the ability to generalize the model to different degrees of column complexity. The success of the method is dependent on proper evaluation of effective /C-values or other model parameters that would represent actual behavior of the column section. The equilibrium coefficient is commonly lumped with the vapor and liquid molar flows in the column to define the stripping factor. 

Absorbent rates of 200, 250, or 300 kmol/h are possible. It is required to determine the lowest among these that would meet the butane speci-hcation, and to calculate the product rates and compositions when the column is operated with the selected absorbent rate. Use the modular column section method with stripping factors based on inlet liquid and vapor flow rates. The gas and absorbent streams are defined below. 

This time an average stripping factor is defined as Sg-KV/L. ... 

As is well known, the stripping factor in the distillation section of a column is that figure which indicates whether a certain component tends to migrate towards the column top or as a liquid into the column bottom. The stripping factor is defined by... 

The separation factor in the Kremser method is an effective absorption factor, for absorption and a stripping factor, 5, for stripping, rather than a relative volatility as in the FUG method for distillation. These two factors, which are different for each component, are defined by ... 

Generally, the solids are not stracturally homogeneous, but the solid and liquid nevertheless wiU be called phases and leaching will be treated as a two-phase, mass transfer process. The solid consists of a matrix of insoluble solids, the marc, and the occluded solution. It may also contain undissolved solute and a nonextractable secondaiy phase, for example, coffee oil in water-soaked coffee grounds. This secondary phase is treated as part of the marc. Dimensionless parameters that can affect solute transfer include the solute equilibrium distribution coefficients, m and M the Fick number, r the stripping factor, a the Biot number, Bi and the Peclet number, Pe. These parameters are defined more precisely in the Notation section. 

Effective component stripping factors, 5 are also calculated from base case rigorous data using Equation 12.33. A reference stripping factor, S, is calculated as some average of 5 using an equation similar to Equation 12.40. Reduced parameters )3, are then calculated from the defining equation... 

As the action of stripping is taken to be effectively the reverse of absorption, the stripping factor for which we write S is defined as the reciprocal of the absorption factor. 

The stripping factor, S, which describes the stripping of a volatile species i into a flowing gas stream from a flowing liquid stream is the inverse of A. The extraction factor for any species is defined in solvent extraction by... 

The mass balance relationships for the feed plate, the plates in the stripping section, of the column and for the reboiler must, however, be modified, owing to the continuous feed to the column and the continuous withdrawal of bottom product from the reboiler. The feed is defined by its mass flow rate, F, its composition xp and the thermal quality or q-factor, q. The column bottom product is defined by its mass flow rate, W, and composition, xw and is controlled to maintain constant liquid level in the reboiler. 

A solvent-extraction flowsheet is broken down into sections such as extraction, scrub, and strip. For each section, one or more component in a process fluid must be moved from one phase to the other phase with a specified degree of completeness. The first design problem is to determine the number of stages for each section to accomplish the required component transfer. With the well-defined stages of the centrifugal contactor, the following extraction factor (E) can be used to estimate the number of stages required ... 

All five of the feed types can be characterized by the use of a single factor, denoted by q and defined as the moles of liquid flow in the stripping section that result from the introduction of each mole of feed. Then q has the following numerical limits for the various conditions ... 

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