Becht Engineering Blog

In this section of the site contributing authors submit interesting articles relating to the various services, industries and research & development efforts of Becht Engineering.

Becht staff include over ten senior materials experts with expertise in applications including power, refinining, petrochemical and chemical facilities, and materials including metals, coatings and linings, and nonmetals such as refractories, thermoplastics (e.g., high density polyethylene) and reinforced thermosetting resins (e.g.,...

Becht staff include over ten senior materials experts with expertise in applications including power, refinining, petrochemical and chemical facilities, and materials including metals, coatings and linings, and nonmetals such as refractories, thermoplastics (e.g., high density polyethylene) and reinforced thermosetting resins (e.g., fiberglass).  Our services include material selection, establishing operating envelopes for equipment, failure analysis, remaining life assessment, and establishing deterioration mechanisms and their associated probabilities for risk based inspection and development of equipment reliability plans.  We are experts in modifications to existing chemical processes to alleviate and control corrosion that allows continued operation of existing equipment.  We are experts in the equipment requirements for processing corrosive crudes (e.g. high TAN crudes such as Doba crude) as well as material applications for high temperature services such as steam cracking furnaces and furnaces to produce synthesis gas.

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Origins and Fates of Chlorides in Hydroprocessing Units - Part 3: Managing the Chlorides

chloride-processing-at-night Chlorides in Hydroprocessing - Part 3
The first two articles of this series provided a methodical approach to identifying a chloride problem in a hydroprocessing unit, determining the size of the problem, and narrowing it down to a likely source or sources.  This final article addresses approaches to dealing with various sources.Read Part 1 of this blog    Read Part 2 of this blogStep 4 - Managing the ChloridesNow that you have a clue about the magnitude of chlorides present and where they might be coming from, you can address the problems.  There are three fundamental strategies or options for controlling chlorides in a hydroprocessing unit:Keep chlorides outIntercept what gets throughDesign and monitor for chloridesBy the application of these strategies, individually and in combination, chlorides have been effectively controlled in many units.Keeping Chlorides OutAs a general rule, target to have much less than 2-3 ppm chlorides in feed and less than 0.5 ppm in makeup reformer hydrogen...
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Origins and Fates of Chlorides in Hydroprocessing Units - Part 2: Magnitude and Source(s) the Problem

chloride-processing-at-night Chlorides in Hydroprocessing - Part 2
The first article of this series introduced the symptoms of a chloride problem in a hydroprocessing unit.  In this article, we will explore how to interpret the symptoms by determining how much chloride-containing material we are looking for and identifying the possible or likely source(s) for this amount of material, embodied in Steps 2 and 3 of the problem analysis.Read Part 1 of this blog    Read Part 3 of this blogStep 2 - How Big is the Problem?It is very helpful to know the magnitude and type of the chloride problem before you go looking for a possible source.  Start by chemically analyzing selected streams for chlorides.  Be sure your operators use good industrial hygiene practices (e.g. chemical gloves) in sampling streams for chlorides since most chloride compounds are hazardous, even in the low concentrations we are testing.Analyze the hydroprocessing unit feed.  Determine the total chloride content of the feed...
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Origins and Fates of Chlorides in Hydroprocessing Units - Part 1: Recognizing the Problem

chloride-processing-at-night Chlorides in Hydroprocessing - Part 1
IntroductionThis series of three articles explores the impacts chlorides may have on hydroprocessing units (hydrotreaters and hydrocrackers).  It provides a methodical approach to identifying the typical effects that point toward chlorides, the sources of chlorides in process feed streams, chloride-induced failure mechanisms, methods for identifying chlorides, strategies for chloride control, and a step-by-step process outline for dealing with a problem.  Some of the approaches and impacts here can also be applied to other halogens in hydrotreaters, such as fluoride.This first article of the series focuses on recognizing a chloride problem in a hydroprocessing unit.  In the second article, we tackle how to identify the magnitude and source(s) of the problem.  The third article presents ways to address the chloride issues.Read Part 2 of this blog--------------------------------------------------------Problems caused by chlorides are often missed or misdiagnosed in a refinery.  They impact not only the hydroprocessing units, but other units as well.  Sometimes the methods...
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Eight Pillars Of Excellent FEMI Programs

8-pillars-of-succes_20200115-132720_1
INTRODUCTIONA refinery or chemical plant Fixed Equipment Mechanical Integrity (FEMI) program consists of eight basic categories or “Pillars” that are fundamental to achieve FEMI excellence. While every refinery or chemical plant has some form of these Pillars in place, they are often inadequately implemented or have significant gaps in the key elements that make up a complete Pillar. This paper describes these Pillars in detail and suggests what distinguishes good Pillars from those that are less than adequate.This article has been published previously in Inspectioneering Magazine - 2019 November/December Issue. If you would like to view the PDF of the article, CLICK HERE. The Eight Pillars of FEMI are:General and OrganizationResourcesCorrosion ManagementInspection Planning and SchedulingInspection NDERecordsRecommendationsInformation TechnologyTypically, when a FEMI audit is performed for a refinery or chemical plant, each one of these Pillars is reviewed and scored. The following sections provide an overview of the elements each Pillar should contain, as...
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