Acid dilution system resists shocks
A
Chem Resist Group product story
Edited by the Engineeringtalk editorial team
Apr 12, 2006
Chem Resist has developed an all-thermoplastic corrosion- and thermal-shock-resistant fully automated acid dilution system.
To eliminate the problems of corrosion, thermal shock and operator error, Chem Resist has developed an all-thermoplastic corrosion- and thermal-shock-resistant fully automated acid dilution system.
Sulphuric acid has a great affinity for water and so the dilution process has a high exothermic heat of dilution releasing large quantities of heat energy.
Due to this boiling of the resultant mixture can occur quite easily if the process is not carefully controlled.
Plants conventionally used to produce dilute sulphuric acid from concentrated feedstock traditionally use a direct mixing design with resin filled graphite, PTFE or glass for contact surfaces in the mixing and cooling areas.
These direct mixing designs suffer from severe thermal shock and thermal cycling associated with these relatively fragile and expensive materials.
The results of these stresses are high maintenance costs and significant plant downtime.
Chem Resist's system uses all thermoplastic materials for the dilution vessel, mixing system and recirculation system.
The computerised control system with process display enables totally safe operation of the system and can be configured to output from individual recipes entered by the operator.
The system consists of: an acid feed section; a deionised water feed section; a static mixing and cooling section; and a cooled acid pumping section.
Chem Resist has acid dilution systems in operation in the UK, Czech Republic, Poland and Egypt.
Chem Resist is able to manufacture not only the acid dilution system, but also the acid storage vessels, supply the pumps, pipework and complete the full installation and commissioning work to customer specifications.
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