The thermal conductivity of hydrocarbons is an essential parameter that needs to be known when designing heat transfer equipment. Presented here is a simple-to-use correlation that was developed for predicting thermal conductivities of liquid paraffin hydrocarbons, petroleum fractions and atmospheric…
Plant Watch Wacker and Dow Corning start production at integrated silicone site November 14, 2008 — Wacker Chemie AG and Dow Corning Corp. started production in the first stage of their new pyrogenic silica and siloxane plants in Zhangjiagang, China.…
Non-Sparking, Non-Magnetic Safety Tools for Hazardous Locations Manufactured from special aluminum-bronze or copper-beryllium alloys, these non-sparking, non-magnetic hand tools (photo) meet ATEX regulations for safe use in areas where hazardous, flammable or combustible vapors, liquids, dusts or residues may be…
An Inline Seal with a Clamp Connection In addition to both threaded-pipe and flanged connections, sterile, standard-compliant connections for instruments are now also possible in the form of a clamp connection (DIN 11 864-3). The standard material for wetted parts…
Process modeling has progressed from the "molecule accounting" of steady-state flowsheeting packages to become a central platform for capturing and deploying chemical process industries’ (CPI) intellectual property (IP). Systematic modeling has moved center stage to help companies differentiate themselves from…
Biodiesel can be produced from vegetable oils by three types of reactions: base catalyzed transesterification of the oil; direct acid-catalyzed transesterification of the oil; and conversion of the oil to its fatty acids, and then to biodiesel. Biodiesel is typically…
Pressure relief systems are vital in the chemical process industries (CPI) for handling a wide variety of situations. They are used to prevent pressurization above a system’s design pressure; for venting during an unusual or emergency situation; and for…
Management is a process of managing risk; maintenance management is a process of managing risk for operational reliability. Since it is hard to manage what cannot be measured, effective maintenance management demands good data on machine health — a comprehensive…
A very common heat exchanger in the chemical process industries (CPI) is the vertical thermosiphon reboiler (VTR; Figure 1). Due to size and fluid-flow restrictions, however, its heat transfer rate is often quite low. The subcooled region formed at the…
Training and Parts Aid in Compressed-Air System Maintenance This company is offering a free interactive Air System Maintenance CD that details common maintenance functions for rotary screw compressors, refrigerated and desiccant dryers, filters and drains. Using instructional video, voice…