Kraft Pulping H-Factor Calculator

Chemical pulping kinetics: Calculate Vroom's H-factor, relative delignification rate, digester cycle time, target Kappa number, and unbleached pulp yield.

Digester Cooking Profile & Chemistry

Wood Species / Furnish:

Maximum Cooking Temp T_max (°C):

Time at Max Temp (minutes):

Ramp Time (min): From 100°C to T_max

Effective Alkali (EA %): % NaOH on oven-dry wood

Liquor-to-Wood Ratio:

H-Factor & Pulp Quality Prediction

Total H-Factor

Predicted Kappa Number

Unbleached Yield

Ramp H-Factor

Dwell H-Factor

Digester Cook Schedule Assessment

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Kraft Pulping H-Factor Calculator

Digester Cooking Profile & Chemistry

H-Factor & Pulp Quality Prediction

Frequently Asked Questions