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
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
Maintaining constant control of pressure in chemical processing and refining equipment is vital in order to avoid the risk of catastrophic damage, injuries, and environmental risks. This paper from Fike outlines the importance of assessing process risks and designing effective pressure relief systems accordingly and provides guidance to ensure that your systems are up to the task.12/01/2016
Mixing of powders into liquids should be relatively easy. You pour powder onto the liquid's surface and then mix it in. However, this mixing can be very troublesome in production. This paper examines the various factors involved with mixing powders into liquids and how to avoid potential problems.10/22/2012
For chemical processors, ensuring a long-lasting, high-quality mix is a huge challenge regardless of the physical properties of the mixing component – liquid, gas, solid. In this Chemical Processing Mixing eHandbook, we take a look at mixing technologies including “open” batch operation, static mixers, hydrogenation and inline mixing. Understanding how each of these technologies works, the benefits and challenges can help you to avoid common mixing mix-ups. Download your copy and learn about:
- A number of technologies that can handle pipeline mixing
- How hydrogenation reactions can achieve greater conversion rates and thus better space/time yields
- Continuous powder wetting
- Inline mixing systems
- Modern in-line mixers
Avoid common mixing mix-ups. Download your copy of this Chemical Processing Mixing eHandbook now.08/26/2015
Combustible dust explosions are a known hazard in chemical processing,and metal dusts pose a unique danger. Learn why this concern is growing in urgency and the steps industry regulators and technology leaders are taking to improve risk mitigation. Download the whitepaper now.06/28/2016
This 26-page white paper from Monitor Technologies discusses the difficulties in measuring bulk solids and powders in bins, silos and hoppers. Download this document to learn which technologies are out there that can make this job easier.01/03/2005
Research Paper: Investigating the Relationship between Gypsum Purity and Hydrogen Sulfide Production under Anaerobic Conditions
Calcium Sulfate (CaSO4) more commonly known as gypsum is a naturally occurring white crystalline mineral that has many different uses and applications. Gypsum in its hydrated form (CaSO4•2H2O) is used in the construction industry for fire resistance in buildings. Outside of the construction industry, gypsum is used in the food and fertilizer industry for calcium and sulfate fortification respectively. When gypsum is no longer usable, it is deposited in construction and demolition(C&D) landfills where anaerobic (low oxygen) conditions and the presence of sulfate-reducing bacteria promote the decomposition of wallboard/gypsum into hydrogen sulfide gas (H2S). Due to local and state regulations on odor control, these C&D sites monitor their fill for hydrogen sulfide gas. This paper will couple two methods of analysis to observe the relationship between the purity of gypsum (calcium sulfate dihydrate) and hydrogen sulfide concentration as a sample is fermented by sulfate-reducing agents (e.g. bacteria). The scope of this research may be beneficial for industrial hygienists concerned with C&D landfill H2S levels or for incoming gypsum processing plants who suspect poor quality gypsum.09/12/2014
Efficient transfer of weighing process data to higher level PLC, MES or ERP systems makes manufacturing processes more efficient and more transparent. But identifying and implementing the most effective system for data transfer and integration can be challenging.02/12/2013
This application note describes two technology solutionscontinuous weight information using loadcell systems or level information using ultrasonic systemsto the problems faced by day bins supplying downstream operations.05/22/2006
Specifying a hygienic bulk solids feeder is not a simple task. The wide variety of requirements needed for specific applications are similar in scope to explosion proof environmental requirement variations.06/06/2005
The collection and testing of dust samples is a long-established practice used by many powder and bulk processors to make informed dust collection decisions. Dust testing protocols have not changed markedly in recent years. The importance of dust testing, however, has changed, and the implications are significant. While knowing your dust has always been good practice, it is rapidly becoming a necessity in today's regulatory climate.
This article will review two separate types of testing: (1) explosibility testing, which is used to determine whether a dust is combustible; and (2) bench testing, which pinpoints numerous physical properties of the dust. Both categories of tests are needed to determine the best dust collection system for your application and whether explosion venting equipment must be part of that system.03/16/2010
Combustible dust explosions are a risk in many areas, but one of the most common locations is the dust collector. This white paper reviews OSHA and NFPA standards, how to identify hazards, and the types of equipment used for explosion protection. It also examines common shortfalls to compliance.09/25/2012
This 16-page PDF white paper addresses the design of reliable feeders in your bulk material handling system.09/01/2005
A large number of analytical and highly empirical correlations including monograms reflecting changing standards have been or are being proposed separately for gas and dust explosion relief venting. This white paper provides a generalized formula that is applicable to both gas and dust deflagrations including subsonic and sonic pressure relief conditions and is consistent with available experimental data and industry experience. Application of the model is illustrated for dust explosions. Download now.05/06/2011
Combustible dust fires happen in plants everyday. This white paper helps manufacturers learn more about combustible dust hazards and ways to handle combustible dust in your manufacturing plant in order to comply with OSHA's NEP. Learn more about choosing the right cleaning tools for your facility.07/25/2012
Fine powders present problems that bulk solids do not when they are contained in a bin, hopper or processing vessel. The primary problem is the powder's flow pattern. This 10-page PDF whitepaper discusses solutions to this problem.03/01/2005
This short two-page PDF whitepaper first discusses how an arch develops within a hopper and then disusses strategies for effectively removing them.01/31/2005
A material’s characteristics – adhesiveness, cohesiveness, aeratibility, pressure-sensitivity – often change during processing and can cause both flow and hidden hazard challenges. And while poor flow is one of the most common problems encountered in handling or storing solids, dust control issues also need to be identified and addressed. This includes combustible dust as the repercussions can result in costly downtown and in some instances, explosions, serious injury and possibly even death. In this Chemical Processing Powder eHandbook, we take a look at strategies and solutions for taming pesky powder processing challenges including:
- Defuse Dust Dangers - Carefully consider and then counter risks of fire and explosion
- Clamp Down On Clumping - First understand what’s really causing the problem
- What You Don’t Know About Powder Flow - Shear cells can quickly reveal information about flow behavior
- Know Your Vacuum Pumps - Understand the differences between liquid ring and rotary screw dry pumps for distillation
Learn how to tame your pesky powder challenges. Download your copy of this Chemical Processing Powder eHandbook now.05/27/2015
This Chemical Processing eHandbook takes a look at some of today’s mixing challenges for chemical manufacturers and some of the best practices that can be implemented to help along the way.
Download this Chemical Processing eHandbook for insights and strategies including:
- Prevent Problems with Fine Particles: Sampling is crucial and demands particular care.
- Quickly Estimate Reagent Addition Time: A simple equation suffices in many situations involving batch reactors.
- Understand Powder Flow Characteristics: A powder’s variables and external factors will greatly impact blender size and type.