Acid Storage Tank Material
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Knowledge for the Sulphuric Acid Industry Sulphuric Acid on the Web Introduction General Equipment Suppliers Contractor Instrumentation Industry News Maintenance Acid Traders Organizations Fabricators Conferences Used Plants Intellectual Propoerty Acid Plant Database Market Information Library Technical Manual Introduction General Definitions In s trumentation Plant Safety Metallurgial Processes Metallurgical Sulphur Burning Acid Regeneration Lead Chamber Technology Gas Cleaning Contact Strong Acid Acid Storage Loading/Unloading Transportation Sulphur Systems Liquid SO 2 Boiler Feed Water Steam Systems Cooling Water Effluent Treatment Utilities Construction Maintenance Inspection Analytical Procedures Materials of Construction Corrosion Properties Vendor Data DKL Engineering, Inc. Handbook of Sulphuric Acid Manufacturing Order Form Preface Contents Feedback Sulphuric Acid Decolourization Order Form Preface Table of Contents Process Engineering Data Sheets - PEDS Order Form Table of Contents Introduction Bibliography of Sulphuric Acid Sulphuric Acid on the Web TM Technical Manual DKL Engineering, Inc. Materials of Construction - Storage Tanks November 11, 2002 Introduction Shell Linings Phenolic Coatings Glass-lined Recommended Materials Associated Links Storage Tanks Anodic Protection Introduction The material selected for sulphuric acid storage tanks will depend on a number of factors such as: Tank size Desired acid quality Costs Acid concentration Storage temperature Back to Top Shell The materials of construction will depend on the acid concentration, temperature and composition. The table under the heading Recommended Materials lists the options for materials of construction. By far the most common material of construction is carbon steel. Where iron pickup needs to be minimized stainless steel can be used for the shell although at considerably higher costs. An alternative to stainless steel is anodically protecting the tank. Back to Top Linings Linings can serve to minimize or eliminate corrosion of the tank and reduce contamination of the acid. Back to Top Phenolic Coatings Baked phenolic coatings are use to minimize iron pickup and corrosion in tanks storing 93% H2SO4. The life of this type of coating is severely limited in 98% to 99% service. Phenolic coatings should never be exposed to alkaline neutralizations because alkali attacks phenolic coatings even in dilute concentrations. The integrity of the lining is dependent on the quality of the surface preparation and the actual application of the lining. All internal surfaces must be inspected, degreased and sandblasted. A thermally cured phenolic coating #P403 of 0.178 mm to 0.254 mm (0.007 to 0.010 in.) thick is applied using a multi-coat procedure immediately following sandblasting. Back to Top Glass-lined Glass-lined storage tanks are used where the acid is extremely pure and no contamination of the acid is permitted. The storage requirements for high quality acid are generally small so storage tanks are generally small. Storage Tanks http://www.sulphuric-acid.com/techmanual/materials/materials_storag... 1 of 2 06/03/2015 9:31
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Tank or vessel with contain chemical, this short list explain the selection tank material with contact surface chemical such as Acid.
Transcript of Acid Storage Tank Material
-
Knowledge for theSulphuric Acid
Industry
Sulphuric Acid on theWeb
IntroductionGeneralEquipment SuppliersContractorInstrumentationIndustry NewsMaintenanceAcid TradersOrganizationsFabricatorsConferencesUsed PlantsIntellectual PropoertyAcid Plant DatabaseMarket InformationLibrary
Technical Manual
IntroductionGeneralDefinitionsInstrumentationPlant SafetyMetallurgial ProcessesMetallurgicalSulphur BurningAcid RegenerationLead ChamberTechnologyGas CleaningContactStrong AcidAcid StorageLoading/UnloadingTransportationSulphur SystemsLiquid SO2Boiler Feed WaterSteam SystemsCooling WaterEffluent TreatmentUtilitiesConstructionMaintenanceInspectionAnalytical ProceduresMaterials of ConstructionCorrosionPropertiesVendor Data
DKL Engineering, Inc.
Handbook of Sulphuric AcidManufacturingOrder FormPrefaceContentsFeedback
Sulphuric Acid DecolourizationOrder FormPrefaceTable of Contents
Process Engineering DataSheets - PEDSOrder FormTable of ContentsIntroduction
Bibliography of Sulphuric Acid
Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.
Materials of Construction - Storage TanksNovember 11, 2002
IntroductionShellLinings Phenolic Coatings Glass-linedRecommended Materials
Associated Links
Storage TanksAnodic Protection
Introduction
The material selected for sulphuric acid storage tanks will depend on a number offactors such as:
Tank sizeDesired acid qualityCostsAcid concentrationStorage temperature
Back to Top
Shell
The materials of construction will depend on the acid concentration, temperatureand composition. The table under the heading Recommended Materials lists theoptions for materials of construction. By far the most common material ofconstruction is carbon steel.
Where iron pickup needs to be minimized stainless steel can be used for the shellalthough at considerably higher costs. An alternative to stainless steel is anodicallyprotecting the tank.
Back to Top
Linings
Linings can serve to minimize or eliminate corrosion of the tank and reducecontamination of the acid.
Back to Top
Phenolic Coatings
Baked phenolic coatings are use to minimize iron pickup andcorrosion in tanks storing 93% H2SO4. The life of this type of coatingis severely limited in 98% to 99% service. Phenolic coatings shouldnever be exposed to alkaline neutralizations because alkali attacksphenolic coatings even in dilute concentrations.
The integrity of the lining is dependent on the quality of the surfacepreparation and the actual application of the lining. All internalsurfaces must be inspected, degreased and sandblasted. Athermally cured phenolic coating #P403 of 0.178 mm to 0.254 mm(0.007 to 0.010 in.) thick is applied using a multi-coat procedureimmediately following sandblasting.
Back to Top
Glass-lined
Glass-lined storage tanks are used where the acid is extremely pureand no contamination of the acid is permitted. The storagerequirements for high quality acid are generally small so storagetanks are generally small.
Storage Tanks http://www.sulphuric-acid.com/techmanual/materials/materials_storag...
1 of 2 06/03/2015 9:31
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TechnologyOrder FormPrefaceContents
Sulphuric Acid PlantSpecifications
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Recommended Materials
The following materials are recommended for sulphuric acid service.
AcidConcentration
Temperature Material
70 to 80%H2SO4 < 40C
Carbon Steel ASTM A131 Gr. B ASTM A516 Gr. 70 ASTM A573 ASTM A662Carbon Steel withphenolic lining
88 to 100%H2SO4 < 40C
Carbon Steel ASTM A131 Gr. B ASTM A516 Gr. 70 ASTM A573 ASTM A662Carbon Steel withphenolic lining
0 to 65%Oleum < 40C
Carbon Steel ASTM A131 Gr. B ASTM A516 Gr. 70 ASTM A573 ASTM A662
When specified, plate material shall be:
Impact tested required where ambient temperatures are low such as innorthern climates.Fully killed as per API 650.Fine grain practice as per API 650.
Some investigators claim that copper bearing steels such as ASTM A285 Gr. C,S57 provide lower corrosion rates and resistance to hydrogen grooving but othersfeel that there is no advantage and the added cost of the steel is not warranted.
The following steels are not recommended for use in sulphuric acid storage tanks:
Carbon steel to ASTM A36, A283, A285, A515High strength steels and low alloy steels
When carbon steel to ASTM A36 or A285 is specified, it shall be made using otherthan rimmed or capped steel practices.
Copyright 2005-2011 DKL Engineering, Inc., All Rights ReservedDKL Engineering, Inc. shall not be held liable for any type of damages resulting from the use of this information. The user assumes all risk and liability in connection with the use of information contained in this and associated web sites. The
data is intended for personal, non-commercial use.
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