Technical & Practical
Rupture Discs: Effectively Minimize Leaks and Emissions
When installing rupture discs, there are several mechanical and operational considerations for reducing the likelihood of leaks and fugitive emissions Overpressure relief systems consisting of rupture discs and relief valves are vital for preventing damage and injury within chemical processing…
Proper Sizing and Installation for Steam System Safety Valves
Successful operation of safety valves in steam systems requires careful adherence to established industry standards for installation and design One of the most critical safety devices in a steam system is the safety valve. Figure 1 is an illustration of…
Technology Profile: Urea Production from Ammonia via a Self-Stripping Process
This column is based on “Prilled Urea from Ammonia via Self-Stripping Process – Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/urea-production-cost. Urea is a nitrogenous compound consisting of a carbonyl group attached to two amine…
Guarding Against Fires and Explosions Caused by Self-Heating
The two experimental methods presented here can be used to quantify powder self-heating hazards in layer and bulk conditions in industrial processes Bulk storage of heated powders and powder accumulations on hot surfaces or in heated environments can potentially lead…
Improve Energy Efficiency using Hydraulic Power Recovery Turbines
This mature technology can be used to save energy, generate revenue and reduce emissions With the Paris Agreement entering into force last November, the Parties to the Convention established their goals to implement measures to reduce the amount of greenhouse…
Practical Solutions to Modular Project Execution
Follow this guidance to improve results on capital projects The opportunities for modularizing industrial and chemical projects are growing at an amazing pace. Once considered a mitigation strategy only for projects in remote areas with harsh climatic conditions or a…
Selection of Severe Service Valves
Severe service valves (SSVs) differ from general purpose valves in important ways. Presented here is guidance on how to increase service life, reduce costs and improve safety and environmental performance of SSVs Severe service valves (SSVs) are often identified by…
Technology Profile: Hydrogen Peroxide Production
This column is based on “Hydrogen Peroxide Production Process Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/hydrogen-peroxide-production-cost. Hydrogen peroxide (H2O2) is the simplest peroxide (defined as molecules with two oxygen atoms covalently bonded to one…
Facts at your Fingertips: Alarm Management
Modern control systems for chemical processes can generate frequent alarms. This one-page reference provides information on common alarm-management metrics, which can foster focused remedial actions and ultimately lead to a safer, better-performing plant. Alarm frequency As alarm frequency increases, an…
Proper Use of Conventional PRV Discharge Coefficients
In order to correctly size pressure relief valves (PRVs), a robust understanding of discharge coefficients for vapor, liquid and two-phase flow is crucial A pressure relief valve (PRV) is used to prevent the pressure in a process vessel from exceeding…