Vertexi5 demo · process what-if
Chlorine process what-if
Move the sliders to see how a simplified chlor-alkali membrane-cell model trades specific energy against output. A small grid search lists settings for an operator to review.
Textbook-style equations with assumed coefficients and an assumed 500 m² electrolyser. Numbers show direction and trade-offs only. They are not predictions for any real cell room, and the suggested settings are not operating instructions.
Inputs
SpeculativeSpecific energy vs current density
other inputs as setOutput vs current density
dashed line = required outputSuggested settings for operator review
SpeculativeGrid search over current density, temperature and NaCl within the limits below, at the membrane age set. Lowest modelled specific energy that meets the required output; one row per current density.
| j (kA/m²) | T (°C) | NaCl (g/L) | kWh/t | CE % | t/day | Action |
|---|
Applying a row only moves the sliders on this page. An operator and process engineer would review any change against real plant limits.
Assumptions
U = 2.35 + 0.004·(90 − T) + k·j + 0.002·max(0, 210 − c)
k = 0.10·(1 + 0.012·(90 − T))·(1 + 0.03·age) [V per kA/m²]
CE = 0.97 − 0.004·age − 0.0012·max(0, 200 − c) − 0.01·max(0, 3.5 − j), clipped 0.80–0.98
- j = current density (kA/m²), T = cell temperature (°C), c = anolyte NaCl (g/L), age = membrane age (years).
- Faraday: about 756 kAh per tonne Cl₂ at 100 % efficiency. Specific energy = U × 756 / CE (DC only; rectifier, auxiliaries, evaporation and hydrogen credit ignored).
- Output = j × 500 m² × 24 h × CE / 756 (t Cl₂/day).
- Suggestion limits (illustrative): T ≤ 90 °C, NaCl ≥ 190 g/L, j ≤ 6.0 kA/m².