Page 40 - PCMI Summer Journal 2021
P. 40
An Overview of the Operation of Ferric Chloride Regeneration Systems in Photochemical Etching Machines
Presented by: Kirk Lauver, the Marketing Specialist, Chemcut Corporation, US
7/27/21
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Chlorine Gas is a hazardous gas stored in cylinders under pressure
Strict Safety Regulations, Requires Permits, Inspections, Training, Special handling is required for large gas cylinders.
High installation costs for large cylinders and high flowrates
• The oldest method of regeneration in etching machines, first used in the 1960’s
• Produces no by-products
• Regeneration reaction is very fast
• Contains nothing but the element chlorine (no extra water) High Baume’ possible
• ORP controls when to add chlorine, 1.9 Kg Chlorine/1.0 Kg of metal etched
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Chlorine is added under a slight vacuum (never under pressure) Chlorine valve is controller by ORP
Ton Cylinders
Vacuum regulators
50 to 70 Kg 150 pounds (USA)Tanks
Issue 137 August 2021 PCMI Journal 40
