Use the Consistency_Split to split a pulp stream according to specific outlet consistency. The model thickens the stream by splitting off some of the liquor. The inlet stream contains both, liquor and solids.

What do you want to see?

Data Description

Equipment Properties

Data Description

Data		Unit		Description
Set	Item	Type	Native	Description
Equipment Properties	First Outlet Consistency	Fraction or Percent	Fraction	The desired consistency of the First_Outlet stream.
	Inlet Solids to First Outlet	Fraction or Percent	Fraction	The fraction of the inlet solids that remain in the First_Outlet stream.
	Second Outlet Consistency	Fraction or Percent	Fraction	The consistency of the Second_Outlet stream.
	Split Water Only			If checked (True) all dissolved species go to the first outlet stream and water and suspended solids go to the second outlet stream.

Top of Page

Equipment Properties

Top of Page

Example of using equipment

Top of Page

Method&Equations

The flow of solids is based on the solids fraction in the First_Outlet stream.

The user can enter the fraction of inlet solids in the First_Outlet or this may be calculated, given the consistency in the First and Second_Outlet as the equation shows:

SOLFRC = (CONSO1 * (CONSO2 * LIQFLOI + (CONSO2 - 1.0) * SOLFLOI)) / ((CONSO2 - CONSO1) * SOLFLOI)

where:

SOLFRC is the solids fraction for the First_Outlet

SODFLOI is the flow of solids in the inlet

LIQFLOI is the flow of liquor in the inlet

CONSO1 is the First_Outlet consistency

CONSO2 is the Second_Outlet consistency

To calculate the required flow of liquor in the first outlet stream necessary to meet the specified consistency, the model uses the following:

LIQFLO = SLDFLO * (1.0 - CONS) / CONS

where:

LIQFLO is the required flow of liquor

SLDFLO is the inlet solids flow