The TriVAX (photo) and TriVAX flex intelligent electrohydraulic valve actuators are as easy to install and handle as an all-electric drive unit, yet are as powerful, robust and durable as an actuator that is entirely hydraulic. The intelligent electronics ensure…
Over 750,000 entries are now available to the scientific community through the Cambridge Structural Database (CSD). This fully validated database, established in 1965, contains all small-molecule chemical structures ever published, and is an essential resource to scientists around the world.…
The SmartVentilation system is a complete solution to the challenge of providing fresh air and venting toxic gases from subterranean mines. It also minimizes energy use by ventilating only those areas of a mine that require it. The company estimates…
The new Type 3379 Pneumatic Actuator is tailored to the requirements of hygienic applications. All moving parts are contained in a housing with a smooth stainless-steel finish, making it easy to clean. The internal air-routing prevents dirt or water from…
This company has introduced three new amplifier modules for its SomatXR Data Acquisition System. The new amplifier modules are especially suitable for taking measurements under very harsh operating conditions, making SomatXR systems suitable for drive and durability testing of machinery…
Consolidating multiple flares can help mitigate emissions and maintenance Chris Ng and Zubin Kumana Siemens, Process Safety Consulting Many petroleum-refining and petrochemical facilities have experienced tremendous growth in recent years in response to increasing demand for fuels and chemical precursors.…
Ensuring optimal performance of shell-and-tube heat exchangers requires knowledge of the controlling fluid, correct exchanger geometry and configuration, as well as proper fluid placement Satyendra Kumar Singh Simon India Ltd. Optimizing the thermal design of a shell-and-tube heat exchanger…
Applying dynamic simulation models to tube-rupture scenarios can help ensure more accurate sizing and hazard assessments Tube rupture in heat exchangers is an extremely serious issue in the chemical process industries (CPI; Figure 1). Heat-exchanger tube-rupture scenarios can be evaluated…
Successful dispersion depends on a basic understanding of dispersion equipment and how dispersers should be used High-shear mixers typically operate at high rotational speeds and are used for mixing applications that are best described as dispersion processes. They can be…
With a global nominal capacity of about 140 million ton/yr, ethylene is among the main petrochemicals produced worldwide, and is a key building block for the industry. Ethylene is produced mostly via steam-cracking of petroleum-based feedstocks, such as naphtha. Ethylene…