Inspection & Measurement Systems

Applications

Application Notes

HHXRF for HF Alkylation Units Corrosion Prediction by Residuals in Carbon Steel


The DELTA Line Takes Detection Limits of Residuals in Carbon Steel to an All Time Low!

Highly accurate measurements of low levels of Cr, Ni and Cu in carbon steel are critical for predicting accelerated corrosion of components in HF Alkylation process units. It has been shown that if the sum of the residuals, Cr, Ni and Cu, exceeds 0.20%, the carbon steel components used in HF Alkylation processes will likely experience a preferentially accelerated corrosion rate. In general, a level between 0.15% and 0.20% of the sum of the three key residuals is deemed optimal, depending on the component, its use and location in the unit. As this is a decisive measurement for critical, low levels of Cr, Ni and Cu, it is necessary to grind the inspected component with an aluminum oxide disc to remove at least 0.004" of the surface prior to testing. Elbows, tees, reducers, couplings, flanges, welds, caps, plugs and other fittings, as well as pipe-scale can all be tested for the maximum allowable value of the sum of the three key residuals.

hf steel industrial clouds
Delta Handheld XRF in docking station

Excellent Accuracy and Low Levels of Detection are Critical for Predicting Accelerated Corrosion

In addition to testing for corrosion indicative residuals, the petrochemical industry depends on HHXRF analyzers for material inspection startups, shutdowns, general maintenance and trouble shooting. Managers cannot afford to depend on out-of-date and unreliable equipment, or untimely support of equipment. They also cannot afford to fall behind the technology curve. The analytical capabilities of HHXRF continue expanding; and, new features enable operators to be more effective and efficient. Upgrade your HHXRF to the DELTA - the latest HHXRF loaded with innovative features and backed by the industry's best service and support.

Residual Elements for HF Alkylation Accelerated Corrosion Prediction
Standard Cert
%Cr
XRF
%Cr
Error
(+/-)
Cert
%Ni
XRF
%Ni
Error
(+/-)
Cert
%Cu
XRF
%Cu
Error
(+/-)
IAMR 229A 0.015 0.015 0.002 0.029 0.028 0.006 0.072 0.073 0.008
IARM 28E 0.079 0.080 0.005 0.145 0.139 0.013 0.030 0.028 0.002
IARM 33D 0.139 0.139 0.006 1.78 1.777 0.03 0.014 0.013 0.003
IAMRM 35F 1.16 1.21 0.006 0.047 0.041 0.005 0.12 0.12 0.007

 

Residual Elements Measured by HHXRF
Standard XRF
%Cr
XRF
%Ni
XRF
%Cu
Sum of
Residuals (%)
Inspection
P/F
IAMR 229A 0.015 0.028 0.073 0.116 Pass
IARM 28E 0.080 0.139 0.028 0.247 Fail
IARM 33D 0.139 1.777 0.013 1.929 Fail
IAMRM 35F 1.21 0.041 0.12 1.371 Fail
Residual Elements Certified
Standard Cert
%Cr
Cert
%Ni
Cert
%Cu
Sum of
Residuals (%)
Inspection
P/F
IAMR 229A 0.015 0.029 0.072 0.116 Pass
IARM 28E 0.079 0.145 0.03 0.254 Fail
IARM 33D 0.139 1.78 0.014 1.933 Fail
IAMRM 35F 1.16 0.047 0.12 1.327 Fail

trace cr xrf chart

 

Handheld XRF for Metals & Alloys Industries

Iron & Steel Non-ferrous Scrap & Secondary

Iron and steel are the most widely used of metals and alloys. Lighter metals, non-ferrous, newly developed and exotic alloys are also utilized extensively, but iron and steel are considered the basic raw materials for the majority of industrial goods and construction. Although produced from ores mined around the globe, steel is one of the most recycled materials in the world. From base form to recycled materials to finished products, metals and alloys are integral to the fabric of society, the consumption of which is often considered a primary indicator of development and economic progress.

Metals Alloys is a serious, dynamic business.

The DELTA XRF analyzer is an essential tool for all businesses involved in the trade or use of metals alloys. In seconds, you can nondestructively measure 25+ elements. Turnings, shavings, rods, wires, small parts, components, sizeable materials and large structures can all be analyzed directly, non-destructively. How you get them, how you make them, how you use them, how you sell them is how you measure them. Whether you check purity, chemistry, or grade ID for highest value, maximum recovery, quality, conformance, or maintenance and safety, our DELTA XRF analyzer will give you immediate answers to take action on now.

Delta HandHeld XRF testing for alloys

Products used for this application


DELTA Alloys and Metals Handheld XRF Analyzer

DELTA Handheld XRF PMI analyzers provide non-destructive alloy analysis to rapidly and accurately identify alloy grades and measure metal composition. Perform PMI inspections and QA / QC testing in seconds, from simple grade ID to specification quality control, from incoming material inspection to end-product verification.

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