Equipment

Valves 101: Types, Materials, Selection

March
2009
Back To Basics
Brian Gordon
The most common valves used in chemical processing are ball valves, butterfly valves, diaphragm valves, and check valves.

Selecting In-Process Particle-Size Analyzers

August
2003
Fluids and Solids Handling
Paul Barrett
To select the proper instrument for process monitoring, one must determine what attribute of the particle system impacts the process or product parameter of concern. Once the size region is identified, it can be tracked in-process, opening up the...

Exposing Coriolis Mass Flowmeters' Dirty Little Secrets

March
2004
Instrumentation
James R. Reizner
Coriolis technology appears to be the perfect technology. But, upon closer inspection, a key flaw is revealed - the inability to accurately and consistently measure two-phase flow and aerated liquids.

Exploring Instrumentation Alternatives

September
2008
Instrumentation
Robert Baker
Salvaged, remanufactured, refurbished or new-surplus equipment may be a cost-effective option. Here's how to recognize when such devices may no longer meet safety or regulatory requirements.

Reliability for Safety Instrumented Systems

September
2004
Instrumentation
J. Patrick Williams
This article offers a detailed reliability-based methodology for determining the safety integrity level of instrumented systems by providing overpressure protection where arrangements of multiple pressure-relief valves are impractical to implement.

Understanding Sealing Solutions

July
2009
Back To Basics
Jim Drago, Matt Tones
The right seal can help a plant save money, eliminate leaks, and avoid safety problems. Here’s how to select and install gaskets for effective sealing.

Choose the Right Chemical-Resistant Glove

January
2005
Safety
Julie Copeland
Many gloves offer protection from chemicals. This article will help you understand what type of glove can provide the best protection for your application.

Prepare Your Cooling System Before Startup

July
2012
Heat Transfer
Paul R. Puckorius
Pre-startup actions such as initial water treatment and equipment coatings in cooling tower water systems can increase system life expectancy and efficiency, and reduce corrosion and fouling.

Converting a Commercial Distillation Column into a Research Tower

July
2005
Reactions and Separations
Ralph Weiland
Operating a column under actual distillation conditions is important for obtaining commercially valid hydraulic data. This article describes how a column was modified to operate in either a production or a research mode to collect hydraulic and mass...

Spray Dryers: A Guide to Performance Evaluation, 2nd Edition

August, 2004
Spray Dryers: A Guide to Performance Evaluation, Second Edition discusses the reasons for spray drying. These reasons are usually to produce a product with certain desired properties or with better efficiency than other methods. The book discusses how to plan in light of these objectives and gives...

The Case for Double Mechanical Seals

June
2009
Back To Basics
Jack Berg
Using double mechanical seals as part of thermoplastic pumps can prevent costly downtime and environmental damage.

Harness Electricity to Operate Valves

June
2012
Back To Basics
Justin Ledger
Actuators automate valves by converting an input signal into motion. This article explains the basics of electric actuator design and explores the different types of electric actuators.
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