Innovative Product Development VCI TECHNOLOGY APPLICATIONS · Innovative Product Development VCI...

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Innovative Product Development VCI TECHNOLOGY APPLICATIONS Terry Natale, Product Development Engineer Northern Technologies International Corporation [email protected] (216) 450 -5719 September 21, 2012 Corrosion Forum 2012

Transcript of Innovative Product Development VCI TECHNOLOGY APPLICATIONS · Innovative Product Development VCI...

Innovative Product Development

VCI TECHNOLOGY APPLICATIONS

Terry Natale, Product Development Engineer Northern Technologies International Corporation [email protected] (216) 450 -5719 September 21, 2012

Corrosion Forum 2012

Northern Technologies International Corporation (NTIC)

NTIC is a global provider of corrosion inhibiting products

The initial patent in 1980, for a “Volatile Corrosion Inhibiting Article”, utilizes the application of

Volatile Corrosion Inhibitors (VCI)

The majority of NTIC business is based around the application of VCI technologies

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VOLATILE CORROSION INHIBITORS (VCI)

• The unique aspect of a VCI is its delivery mechanism

• A VCI in its “natural state” can be a solid, liquid or gas

• For solid or liquid VCIs, a small amount of the VCI also exists in a gaseous state. How much is determined by each compound’s Vapor Pressure

• Once in the vapor state, VCI disperses through the airspace

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VCI ACTION

• To be effective, the VCI must be applied in an enclosed space, or it is simply lost to the atmosphere

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• From the airspace, the VCI will reach and adsorb onto metallic surfaces, where they will work like typical corrosion inhibitors

NACE 2012 Materials Performance Innovation Awards

Zerust® Flange Saver®

Zerust® ReCAST–R Corrosion Protection for

Aboveground Storage Tank Roof Interiors

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Zerust® Flange Saver®

Flanged Joints are used across a wide variety of industries and are subject to corrosion, especially in aggressive environments.

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Flange Savers

Are an extension of NTIC’s traditional VCI film (PE film with VCI compounded into the film)

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The FS is used to create an “enclosure” around the flanged joint which:

• Reduces exposure to the outside environment

• Provides a delivery system for VCI into the enclosure to protect the enclosed metals

FS film can be cut to fit a wide variety of “shapes”

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Singapore Terminal

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FIELD TESTING RESULTS

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Russian Water Treatment Plant

FIELD TESTING RESULTS

FLANGE SAVER® BENEFITS

Reduce maintenance time and costs

Inexpensive, rugged, durable protection

Quick and easy to install

Installation requires no special equipment or training

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Corrosion Protection of Aboveground Storage Tank (AST) Roof Interiors

Corrosion can be a significant problem in AST vapor spaces

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Zerust® ReCAST-R

Corrosion is often more severe in crude oil tanks, with typically very aggressive vapor

space environments, including:

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• Sulfur compounds (H2S, SO2, Mercaptans)

• Chlorides

• CO2

• High Relative Humidity

• High Temperatures (up to 80°C)

For tank vapor space surfaces, coatings generally are ineffective

• Unable to coat all surfaces

• Highly dependent on surface preparation and operator application skill

• Coating failures will contaminate stored product

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Zerust® ReCAST-R System

Corrosion protection is provided by VCI delivered into the AST vapor space via dispensers installed on the AST roof

FIELD INSTALLATION

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Petrobras Refinery - Brazil

Data collected during the trial demonstrated that corrosive species in the test tank (with inhibitor) generated a more aggressive environment than that in the control tank

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ENVIRONMENTAL CONDITIONS

Testing Parameters Monitoring Results

Control Tank Test Tank

Concentration

O2 (%) 18 10

SO2 (ppm) 7.0 >20

H2S (ppm) 3.0 26

Temperature Range (°C) 25 to 55

Relative Humidity Range (%) 40 to 85

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FIELD TRIAL RESULTS

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* Calculated from ultrasonic thickness measurements

Even with the more aggressive environment, there was

~4X reduction in corrosion rate

Petrobras, Brazil

Zerust Corrosion Prevention SA, Brazil

Zerust NIC, Taiwan

Zerust Singapore

Lenprom Technologies, Russia

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CONTRIBUTORS

THANK YOU

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