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Technical & Practical

Liquefied-Industrial-Gas Safety

Many industrial gases are transported, stored and used in liquid form, a situation that poses significant health and safety risks. This one-page reference highlights good safety practices for preventing personnel injury when working with cryogenic fluids. High-purity industrial gases, including…

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Control Valve Selection: True Cost Savings Are Available

New safety and environmental regulations, longer plant uptime and changes in maintenance practices have created new requirements across the chemical process industries (CPI). Among the plant equipment affected by these changes are control valves, since they are used in numerous…

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Producing Ethanol from Lignocellulosic Biomass

Pressing global issues, such as climate change and declining energy security, have led to an increasing interest in the use of renewable feedstocks for fuel production. These feedstocks include lignocellulosic materials, such as waste biomass from the agriculture and forest…

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Project Optimization Through Engineering

In the face of intense market pressures, companies are increasingly requiring their engineering organizations to complete capital projects more quickly, while spending less capital and creating systems that cost less to operate over the long run. They are also asked…

Dust Control in the Chemical Processing Industries

Dust in the chemical processing industries (CPI) is present in numerous operations, including powder processing; the transport of materials on belt or rotary-screw conveyors; grinding materials in giant shredders and pulverizers; machining, sawing, grinding or sanding operations; dumping bags of…

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Bio-based adipic acid

Adipic acid is a dicarboxylic acid that is widely applied to the production of nylon, polyurethanes, plasticizers and other polymers. Its main use is as one of the raw materials for the manufacture of the polyamide nylon 6,6. In 2012,…

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Fine Tune the Design of Sour-water Strippers Using Rate-based Simulation

Sour-water strippers (SWSs) are common in petroleum refineries, as well as gas-processing and gasification plants, and are used to remove ammonia, hydrogen sulfide and carbon dioxide from contaminated process waters. The design of these units is typically done using the…

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Combining the use of Rupture Discs with Relief Valves

Pressure-relief solutions are commonly used in the chemical process industries (CPI) to ensure safe working environments for personnel and to protect equipment and assets. Relief valves (RV) and rupture discs (RD) are the most commonly used pressure-safety devices and are…

Industrial Control Systems Security: The Owner-Operator’s Challenge

Ensuring the security of industrial control systems (ICS) can be a daunting and complex task, requiring expertise and experience in several areas from a variety of contributors. The rapid pace of improvements to both technology and practice adds to the…

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Compressors for Specialized Applications

Compressors for specialized chemical process industries (CPI) applications — particularly high-pressure applications (involving large- and medium-sized machines) and those calling for small compressor units — present particular challenges to system designers and operators. This article discusses a variety of engineering…