Petroleum Refining

Below you will find white papers on topics involving process control and automation.

Valin’s Inventory Management Services: Providing Peace of Mind

Submitted by Rich Wilbur || Valin Corporation

By taking advantage of Valins program, customers can be confident that their inventory management function is fully optimized.? They can rest assured that the right parts will be in the right place right when they need them, while keeping the peace of mind that their transactional costs are being lowered and the KPIs are being adequately analyzed.

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Actuator Options for Process Automation

Submitted by Corey Foster and Peter Jessee || Valin Corporation

The process industries have control valves with actuators designed to open, close, and control them. Many people prefer pneumatic actuators given their long history, reliability, and high performance.

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Looking Beyond Globe Control Valves

Submitted by Peter Jessee || Valin Corporation

While globe control valves are still a viable solution, modern rotary control valves offer many advantages and serve as a more suitable solution in certain process applications.

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How to Monitor Assets Remotely Today

Submitted by Corey Foster || Valin Corporation

As long as products have had ethernet ports, people have been asking for remote access to them. They believed they could just plug the devices into the internet, and it would all work.?As more software tools became available and internet speeds increased, capable users found ways to give themselves access, however, there was a catch.

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Understanding the Feedstock with Valin

Submitted by Norman Hall || Valin Corporation

The only way to achieve a specified purity level is to select and install proper filtration, with the job intended and the task fully understood. Norman Hall, Filtration Business Unit Manager for Valin Corporation, suggests a correct approach.

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Steam vs. Electric Heating — The Basics

Most facilities in the chemical process industries (CPI) require some form of heat. The amount of heat required, and the necessary level of consistency can vary from process to process. Regardless of the details, engineers must decide on a heating source that works best for a particular process.

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Silicon-Controlled Rectifier Power Controls: Worth the Investment

Submitted by Randy Mulvaney || Valin Corporation

In terms of what matters to most in the field today, it is safe to assume that reliability, flexibility, accuracy and cost are at the top of the list. With these factors in mind, implementing a silicon-controlled rectifier (SCR) control system for an electric heater is often an optimal approach.

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Determining Pressure Drop for Control Valve Sizing

Submitted by Peter Jessee || Valin Corporation

Most people who are familiar with control valves have seen the formula for calculating the valve capacity (Cv) required to pass a given flow rate of water. This seems fairly straightforward until you ask yourself, what is the correct value of differential pressure to use?

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Process Piping and Heat: Solutions to Consider

Submitted by Jon Irvine || Valin Corporation

Several different processes require a product to flow through a pipe from one piece of equipment to another. A certain level of heat is often required for this process piping, and this heat must be at very high levels for many applications.

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Developing a Corporate Filtration Strategy

Submitted by Tim Tritch || Valin Corporation

Proper filtration is essential to process flow operation. Improper or lack of filtration can wreak havoc on components, reducing their life and changing the final product. This can lead to equipment failure, process upsets, increased quality issues and in some cases, unplanned shutdown. Learn more.

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Catalytic Regeneration: Designing Electric Process Heating

Submitted by Patrick Bartell || Valin Corporation

Achieving effective catalyst regeneration requires a process that produces a very high level of heat in a very efficient manner. Over the years, there have been several different approaches to create this required heat. Traditional steam and heated transfer media have limitations. Learn more.

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Stop Cavitation from Destroying Your Control Valve Trims

Submitted by Dr. Jon F. Monsen and Dr. Hans D. Baumann

The devastating effects cavitation can have on control valve internals are widely appreciated. In this article, the authors therefore explain the origins of cavitation, provide an easy-to-use method to estimate cavitation sound levels, and conclude with approaches to reduce or even avoid cavitation.

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Installation Practices Key to Successful Heat Tracing

Submitted by Jay Van Horn || Valin Corporation

Laying out an effective heat tracing design requires careful attention to detail.?Every aspect of the system must be meticulously considered, including both the temperature requirements of the fluids being protected as well as the physical characteristics of the equipment being heat traced.

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Instrumentation Fittings — What You Need to Know

Submitted by Greg Neneman || Valin Corporation

In the world of instrumentation, there are a number of different topics discussed and analyzed.  However, one that should not be overlooked is that of instrumentation fittings. Do you know what technologies are available? Do you know the strengths and/or weaknesses? Are there any new trends?

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Industrial Heaters: Reducing Premature Failure

Submitted by Nathan Ehresman || Valin

Premature heater failures can lead to unexpected process downtime. Tactics such as testing, planned replacement programs, and preventing moisture ingress can help prevent premature heater failures.

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Electric Process Heater Maintenance Considerations

Submitted by Patrick Bartell || Valin Corporation

A plant operator's biggest fear is an unplanned shutdown. The process can place a heavy amount of stress on both operations and maintenance personnel. Alternatively, taking full advantage of a planned shutdown or turnaround is critical.

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Look To Data To Boost Reliability

Submitted by Corey Foster || Valin Corporation

Predicting your plant's future depends on collecting and analyzing the correct type and amount of equipment and process data. Predictive maintenance (PdM), much like "IIoT," "Industry 4.0," and "Plug n Play," may be exciting concepts, but many plants still aren't leveraging them fully. Learn more.

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Control Valve Cavitation and Noise Prevention

Submitted by Kari Kohonen || Valin Corporation

Specifying control valves and engineering a system in which the flow of a particular product is completely optimized for superior performance and yield can be a challenging process. A number of factors must be considered during this practice to avoid process-destroying problems. Learn more.

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Liquid Flashing in a Control Valve Without Choked Flow

Submitted by Jon Monsen, Ph.D., P.E., Valin Corporation

Many engineers may wonder if it is possible to have flashing liquid flow in a control valve even if the flow is not choked. The short answer is yes, but it is not very common. This article provides a more detailed answer to this question.

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Before Winter Strikes, Check the Heat Trace

Submitted by Nathan Ehresman || Valin Corporation

With the cold months on the precipice, November is a great time to review the actions that plant managers and operators should take to better ensure a winter free from incident.

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