Partner Details

 

Etairon LLC


Etairon delivers Soft-Sensors-as-a-Service (SSaaS™) providing accurate, adaptive, and highly available real-time signals for product qualities and physical properties for the process industries.

 

 

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Overview

Etairon delivers Soft-Sensors-as-a-Service (SSaaS™) providing accurate, adaptive, and highly available real-time signals for product qualities and physical properties for the process industries. Our solutions are designed for use with the OSIsoft® PI System® and are based on tried-and-true first principles modeling techniques. Our technology has been implemented for over fifty oil & gas companies over the last twenty-five years.

Partner Type: Independent Software Vendor

Active Locations: Asia-Pacific, Europe, Latin America, Middle East, North America

Industries: Oil & Gas

Partner Tier: Registered

Locations

Headquarters

805 Rhode Pl Suite 500
Houston, Texas 77019 United States
Phone: 832-444-1914

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Products & Services

 

(SSaaS™) Soft-Sensors-as-a-Service

(SSaaS™) Soft-Sensors-as-a-Service

 

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(GCC) Generalized Cutpoint Calculations | Crude Switch Optimization

GCC (generalized cutpoint calculation) is a first principles based inferential package for CDU and other main fractionators – FCC, Coker, Hydrocracker, etc. Fractionator feed contains hydrocarbons of wide boiling range, which are to be separated to LPG, naphtha, kerosene, diesel, heavy diesel and heavy boiling bottoms. The products must satisfy certain specifications such as distillation 90% points, flash points, freeze and cloud point. The fractionator feed rate and quality is not constant, and occasionally changes quite abruptly, for example upon crude switch or coker drum switch. At such times of uncertainty, the operator is challenged to run the unit optimally while keeping the products on specification. GCC helps the operator cope, working as a reverse simulation. It reads unit conditions: pressure, temperature and flows from the DCS, and comes up with an estimate (inference) of product qualities. Being a first principle package, GCC is as reliable as the instrumentation. It typically does not drift and does not have a crude-to-crude bias. The GCC code resides on a host computer and inferential results are written into DCS tags. Operators trend the results and they can see how product qualities change and take corrective action. APC (advanced process control) when implemented works to optimize the unit against constraints, while satisfying product specifications. To accomplish this goal APC must also rely on high fidelity inferential models, and GCC does provide the adequate level of reliability. Over the last 25 years Petrocontrol has installed about 100 fractionator inferential packages to run in support of APC applications.

 

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(GDS) Generalized Distillation Shortcut

GDS (generalized distillation shortcut) is a first principles based inferential package for two-product fractionators: deethanizers, depropanizers, debutanizers, deisobutanizers, deisopentanizers, BTX (benzene-toluene-hexane) separators, etc. Such a wide variety of columns fall into that category that any refinery, petrochemical plant, upstream LPG separation plant, would have a number of those columns. In terms of the technology, while GCC uses a boiling point curve concept, GDS applies thermodynamics of distinct components plus shortcut separation models to estimate product cross contamination. GDS simulates a section of the column where internal reflux is known, or could be calculated. Temperatures below and above the section, as well as column pressure are measures. The GDS model correctly accounts for changes in internal reflux ratio and changes in column feed composition. In that sense it works much better than an inference which is based solely on one temperature. APC (advanced process control), when implemented, works to optimize the unit against constraints, while satisfying product specifications. To accomplish this goal APC must also rely on high fidelity inferential models, and GDS does provide the adequate level of reliability. Over the last 25 years Petrocontrol has installed about 120 fractionator inferential packages to run in support of APC applications. Some of our clients employ up to 20 GDS applications (30 – 40 inferences) in a single refinery.

 

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