Industry solution · Electroplating

Energy retrofit for plating acid-mist extraction and scrubber duty

Chromic acid mist, acid and alkali fumes with scrubber duty — corrosion protection, less maintenance, airflow that follows line load.

Corrosion resistanceLess maintenanceAirflow following line load

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Process & Pain Points

Where the fan sits in your system

Typical scenario: Tank-side extraction, pickling-line exhaust, scrubber duty

Tank-side extraction in a plating shop needs stable airflow — too little and acid mist escapes into the workshop, affecting both the environment and occupational health. But the number of tanks running varies with order book, and a conventional fixed-frequency fan runs flat out regardless, so you pay for peak conditions all year.

Acid mist corrodes metal fans, which rust and leak within a year or two

Airflow is heavily in excess when only part of the line is running

Belt slip reduces extraction and lets acid mist escape

Multiple fans with no unified monitoring — nobody knows what was saved

Waste-gas treatment chain diagram: capture hood, ductwork, scrubber, energy-saving fan and stack

Capture hood → Ductwork → Treatment unit → Fan → Stack (supply boundary per proposal)

Solution outline (final configuration subject to site survey)

There is no “one-size-fits-all model” — different conditions mean different configurations. Below is the selection framework for Electroplating duty.

Model and materials

All-plastic corrosion-resistant construction, built for sustained chromic acid and alkali mist exposure

Control strategy

Speed stepped to the number of active tanks and line load, holding capture velocity steady at the tank surface

System matching

Selected to match scrubber resistance, so no pressure margin is wasted

O&M onboarding

Platform monitors airflow-related parameters and warns promptly when extraction falls off

Expected Value

Four kinds of value, subject to site assessment and measurement

Energy

Automatic turndown during part-load periods, cutting the bill markedly in typical cases

Reliability

Steady capture velocity at the tank surface reduces the risk of acid mist escaping

Maintenance

Corrosion-resistant materials plus direct drive mean fewer replacements and interventions

Management

Centralised monitoring across fans makes energy comparisons obvious

Related caseElectroplating · East China (anonymised)

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