Chemical surface treatment apparatus and process

摘要

An apparatus and process for chemically treating a surface of a workpiece with a liquid solution that produces an environmentally harmful gaseous byproduct includes a water spray system for contacting and reacting the gaseous byproduct at the location where it is produced during the chemical treating process. The reacted byproduct is then carried away in the water stream and with the chemical treating solution for safe disposal and recovery. Residual unreacted gaseous byproduct is chemically treated at a separate location within the same apparatus layout used to process the workpiece.