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Technology Profile: Production of EPDM Rubber

Ethylene propylene diene monomer (EPDM) rubber is a terpolymer elastomer derived from ethylene and propylene, along with small amounts of a non-conjugated diene as a third monomer (Figure 1). With a completely saturated polymer backbone, this random elastomeric copolymer exhibits…

Gas Trapping Can Unsettle Distillation Columns

Operational troubleshooting guidance is provided for several scenarios involving trapped non-condensable gases in distillation towers Non-condensable gases are often present in distillation towers, either expectedly or unexpectedly. When they do appear, or when the quantity of non-condensable gases varies from…

Controlling Particle Characteristics with Agglomeration

Solids-handling processes and downstream process steps can benefit greatly from carefully controlled particle characteristics. Presented here is guidance on how agitation agglomeration techniques can achieve desired particle properties Throughout the diverse sectors of the chemical process industries (CPI), the ability…

Refining Powder-Testing Practices

A rigorous and structured approach to determining the potential value of powder testing techniques in solids-handling applications can improve powder characterization and processing Many chemical process industries (CPI) sectors face growing pressure to measure and control powder properties more effectively,…

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Facts At Your Fingertips: Predictive Maintenance Methods

Predictive maintenance (PdM) programs can provide advanced warning of equipment problems and potential failures. This one-page reference provides brief descriptions of six common predictive maintenance methods. Infrared thermography Continuous monitoring of equipment temperature over time has the potential to identify…

These flow regulators are now available in new sizes

The complete product line of this company's stainless-steel constructed NSF/ANSI 61-certified automatic Flo-Trol valves (photo) are now available. The most recent additions to the Flo-Trol flow-regulator line includes 3/8- through 3-in. models, and standard flow range offerings from 0.19 to…

Compact relay modules for use in hazardous areas

Two new relay modules have been added to this company’s product range for hazardous areas in Zone 1. The series 9174 and 9177 (photo) relay modules enable a.c. and d.c. loads to be switched using the Ex e and Ex…

A cloud-based software service for monitoring waterworks

Netilion Water Networks Insights (NWNI; photo) provides reliable monitoring of flow, pressure, temperature, level, water quality and other measurements. This software service connects all levels of water supply systems, empowering service providers and water associations to manage multiple control and…

A polymer pelletizer for when capacities are high

The Pearlo 350 EAC underwater pelletizing system (photo) has a liquid-heated die plate for high capacities, delivering throughputs of 18,000 kg/h of virgin polymer. The unique cutting-blade design and optimum water- and material-flow conditions within the cutting chamber provide not…

High-shear mixers for fine dispersions and emulsions

Batch high-shear mixers equipped with the Solids/Liquid Injection Manifold (SLIM) Technology (photo) deliver powders in an efficient manner for quick wet-out and complete dispersion into low-viscosity liquids. In a conventional rotor/stator mixer, materials are continually drawn from below the mixing…