Dependable pH determination in chlor-alkali brine is notoriously difficult. Process conditions and high impedance signals from pH sensors mean maintaining measurement accuracy has been a headache for instrumentation engineers - until now.03/26/2012
This 6-page primer explains the various forms of nonwoven media, their special characteristics, as well as filter configurations and function. It discusses advantages and disadvantages, and application trends.10/15/2004
Since its introduction to the market in 1959 by The Lubrizol Corporation, chlorinated polyvinyl chloride (better known as CPVC) has proven to be an attractive alternative to traditional industrial metallic piping systems in a wide variety of chemical process environment by offering a more reliable, long-term performance than many other materials.02/04/2015
The Every Man’s Guide to OPC is an easy-to-read overview of the most popular industrial open connectivity standard - OPC. This paper introduces the main idea behind OPC, shows why OPC is different from conventional (often proprietary) communication protocols, and explains how OPC helps overcome the limitations of such native protocols. Next, the paper explains what the building blocks of OPC are (OPC Clients and OPC Servers) and how they work together to make data-sharing possible.
This guide to OPC helps readers of all technical levels quickly grasp what OPC is and how they can use it.05/22/2013
Optical Dissolved Oxygen Measurement in Power and Boiler Applications
Over the past decade a few trends have started to gain pace within the industry, driving a change in instrumentation requirements for operations managers and plant chemists:
- Maintenance and operations budget cuts have resulted in fewer plant personnel, forcing plant staff to optimize their workload even further
- As the cost of building new power and boiler systems increase, many operators now look to plant life extensions as a solution to bridge gaps in production capacity at a lower investment premium
These trends have changed the requirements in these applications. Starting from these trends, this article analyzes the options for oxygen measurements that are precise, reliable, stable, and above all require low to zero maintenance.04/27/2015
In March 2008, OSHA reissued its Combustible Dust National Emphasis Program (NEP) notifying approximately 30,000 companies nationwide that they will be targeted for inspections over the next few years. Mettler Toledo recognizes that many manufacturers are not up-to-date on the latest hazardous area compliance regulations or may not know that their industry is subject to those regulations. Don't wait until your facility receives a surprise visit from OSHA or worse yet, for a catastrophic incident to occur. Take the proactive approach to addressing the "hazardous area advisory level" in your facility.09/20/2010
This white paper outlines trends and opportunities for gasket standardization in processing plants ... including the potential for more reliable sealing, cost savings, inventory reduction, easier installation and safety practices. Steps are outlined for achieving success in gasket standardization across steel, glass-lined and FRP piping.10/18/2006
With a number of vendors producing Programmable Automation Controllers that combine the functionality of a PC and reliability of a PLC, PACs today are increasingly being incorporated into control systems. This white paper explores the origins of the PAC, how PACs differ from PLCs and PCs, and the future direction of industrial control with PACs.09/14/2005
This paper will discuss the use of pattern recognition techniques to identify and differentiate different particle types contained in a heterogeneous solution. This application involves imaging the microscopic particles in real-time as they flow in a solution, segregating each individual particle as a separate image, and then applying pattern recognition techniques to differentiate the individual particle types.A framework for discussing the complexity of a pattern recognition operation in this application will be proposed, along with some specific examples showing how this framework applies.09/03/2008
Harmonics can have a detrimental effect on power generators and other sensitive electrical equipment for the user and utility alike. The number of adjustable speed drives (ASDs) has increased significantly in the past decade. Their contribution to the total electrical load of a power system is significant and cannot be neglected. This white paper discusses various passive techniques for reducing input current harmonics.06/18/2007
Finding the right pump for metering abrasive and aggressive chemicals can be challenging. The pump of choice needs to withstand harsh chemicals, accurately meter, and be simple to maintain and operate. More and more process engineers are turning to peristaltic pumps to solve their pumping problems, reducing life cycle costs and driving gains in process efficiency.05/07/2009
This new U. S. Occupational Safety and Health Administration paper describes OHSA's confined-space satndard, and discusses how to meet it by controlling hazards, administering entry permits and assigning duties, as well as how to deal with emergencies and OSHA assistance available.10/11/2004
This white paper goes over the three major problems associated with poor pump piping and provides five rules to follow in order to avoid future pitfalls.06/14/2007
In chemical production and processing, process design and process safety are crucial considerations – especially when powders are part of production and processing. Inherent challenges such as increasing throughput, accurately measuring powders to manage inventory and removing excess solvents are all challenges that chemical processors need to contend with. In this Chemical Processing Powder eHandbook, we take a look at these powder processing challenges and identify solutions and strategies to overcome them. Learn more about:
- Vacuum conveying - customization, automation and safety
- Matching level measurement system to a job - consider materials and work environment when choosing a device
- Removing solvent vapors in diverse applications - dry and liquid ring vacuum pumps are alternatives to oil-sealed pumps
- Meeting combustible dust compliance – how a facility tackles combustible dust with aportable central vacuum system
The mechanisms of powder flow are complex. They are influenced by an array of different parameters; some relate to the particles’ physical attributes, such as size and shape, and others, such as humidity, to the system itself. Although there is a general understanding of these individual mechanisms, the multitude of interactions that govern the specific behavior of a given powder can many and in turn, affect how these powders are processed. In this Chemical Processing Powder eHandbook, we take a look at technologies and strategies for handling powders including:
- How to Optimize Humidity for Efficient Powder Handling - too much or too little moisture can cause problems during processing and storage
- How to Select the Right Conveying and Feeding System - successful bulk handling of calcium carbonate depends on a variety of factors
- Suppressing Explosions for Process Protection - A properly designed and engineered suppression system offers many advantages
Getting a better handle on Solids Process is an on-going challenge for chemical processors. Are you struggling with multiphase sampling? Do you want to conquer pilot plant challenges? Do you want to learn more about how automatic sampling can help control process safely?
This Chemical Processing eHandbook takes a look at how chemicals manufacturers are meeting these challenges head on. Download this Chemical Processing eHandbook for insights and strategies including:
- Don’t Be Fazed By Multiphase Sampling: An isokinetic system can provide accurate samples;
- Conquer Pilot Plant Challenges: Use design of experiments to minimize the number of runs and ensure meaningful data;
- Case Study: Sampler Helps Control Process Safely: Automatic samplers can be key to ensuring process samples are repeatable and reliable;
Are you looking for more information about solids processing operations? The practice of chemical engineering underpins chemical processing. Universities teach design methods for unit operations such as distillation and heat transfer. However, colleges seldom cover solids processing operations. If any discussion takes place, it only focuses on basic particle physics issues related to drag and turbulence. Yet, many processes require extensive handling of solids.
This Chemical Processing eHandbook takes a look at how chemicals manufacturers are meeting the challenges of solids processing head on. Download this Chemical Processing eHandbook for insights and strategies including:
• Solve Solids Processing Conundrums: Understand more about the unique issues posed by solids and why it is crucial for success.
• Measure Viscosity to Improve Your Mixing Process: Get tips on how to select the proper measuring instrument to better monitor your product quality.
• Make Some Sense of Sensors: Learn more about the variety of solutions that exist for flow level detection and inventory management.
• Consider Used Equipment: Get some guidelines to help you select the right pre-owned machine for an application.
Process design and process safety are critical considerations in chemical production and processing. With design and safety paramount at the outset of any new development or equipment retrofit, firms can minimize risk exposure, maximize productivity and position themselves to remain compliant and competitive. Whether retrofit or new, chemical processing is continually challenged by combustible dust. Combustible dust can pose a hidden hazard when accumulation occurs in unseen locations such as in mechanical spaces, above false ceiling, ventilation systems and dust collection systems. In this Chemical Processing Powder eHandbook, we take a look at strategies and solutions for mitigating combustible dust hazards including:
- Identifying hidden hazards - a case study outlining how a facility finds danger from accumulated dust and effectively addresses it
- Powder flowability - how new measurement methods now make it easier to evaluate flow
- Process safety - properly designed weigh model can optimize safety and improve efficiency
- A multivariate approach to powder processing - an overview of several methods that can help determine which powder properties have the greatest influence on performance
Learn how to preclude powder problems. Download your copy of this Chemical Processing Powder eHandbook now.11/11/2014
This Chemical Processing eHandbook takes a look at how chemicals manufacturers are meeting the various challenges presented by processing today.
Download this Chemical Processing eHandbook for insights and strategies including:
- Vacuum Shelf Dryer Provides More-Uniform Cakes: Different approach to endpoint determination leads to greater consistency.
- Stop What You’re Doing: Challenging existing practices may spur significant improvements.
- Consider Vacuum Drying: A vacuum drying pump offers several advantages for removing vapor over other methods.
- Understand Powder Flow Characteristics: a powder’s variables and external factors will greatly impact blender size and type.