Description
Return the distillation feed-quality line slope and intercept.
A process stream can be described on mass, mole, phase or solvent bases, which are not interchangeable. Lever rules, partition factors and operating-line terms assume compatible composition definitions and an appropriate physical model; a local balance does not determine equilibrium properties or a complete separation design.
Return the distillation feed-quality line slope and intercept.
When to use this tool
Use Distillation Feed Quality Line Slope when checking the stated stream composition, phase or separation-model term.
How to use the tool and how it works
- Enter feedQuality, feedComposition. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read slope, intercept. Use the output convention below.
Return the distillation feed-quality line slope and intercept. Require feedQuality != 1 and feedComposition in [0,1]; slope = q/(q-1), intercept = -composition/(q-1).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| feedQuality | Distillation q, not restricted to [0,1]; q=1 is a vertical line and is rejected by this slope form. | Required. Finite number. |
| feedComposition | Feed Composition | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| slope | Slope | Required. Finite number. |
| intercept | Intercept | Required. Finite number. |
{
"input": {
"feedQuality": 0.5,
"feedComposition": 0.4
},
"output": {
"slope": -1,
"intercept": 0.8
}
}Limitations and assumptions
- Feed quality here is q, not vapor fraction restricted to [0,1]; saturated-liquid vertical q=1 is rejected rather than represented.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified equilibrium and material-property data on consistent bases and solve the complete process model for actual separation or equipment decisions.
References
Similar or alternative tools
- Vapor Quality Enthalpy Base Flag
Return a supplied vapor-quality mixture enthalpy.
- Flash Vapor Liquid One Component Balance
Return flash stream flows and one component's inferred vapor composition.