Multi-Effect Distillation for WFI: How It Works and Why Columns Matter

At a glance. A Tech Inc. Multi-Effect Distillation WFI System evaporates purified water in a series of columns. Steam from each column heats the next, and separators remove droplets that carry endotoxins.

Why more columns

• Each extra column reuses the steam again.

• Steam use falls roughly in proportion to the number of columns.

• Cooling water demand falls too.

What to specify

• WFI output and storage temperature.

• Plant steam pressure.

• Number of columns (three to eight).

• Pure steam take-off, if needed.

Frequently asked questions

Is distillation still required? USP and EP both allow membrane-based WFI, but many plants keep stills for hot WFI.

Contact mail@techincresearch.com for sizing.