Chemical Engineering
In this brief podcast episode, the Chemical Engineering editors discuss highlights from the November 2024 issue, as well some recent…. Chemical Recycling is Essential for Plastics Circularity, but Faces Challenges. Environmental imperatives drive the development of technologies for the chemical recycling of plastic waste, but significant ...
LS solution for combustion management. Since the system measures gas concentration in the radiant section of the fired heater, it improved the heater sa. ety and overall operational eficiency.In this application, the system is installed with two TDLS analyzers for measurement of O2, CO and CH4 concentration.
Viscosity: The Basics - Chemical Engineering | Page 1
Aug 1, 2009 · To be brief, viscosity is resistance to flow. For handlers of all materials that flow, either while being processed or in an end-use, it is important to think about the materials’ flow characteristics. The bottom line is to come up with ways to measure viscosity so that you can quantify whether a material will flow the way it needs to.
Solids Drying: Basics and Applications - Chemical Engineering
Apr 1, 2014 · Drying may be defined as the vaporization and removal of water or other liquids from a solution, suspension, or other solid-liquid mixture to form a dry solid. It is a complicated process that involves simultaneous heat and mass transfer, accompanied by physicochemical transformations. Drying occurs as a result of the vaporization of liquid by ...
Recommended Fluid Velocities in Pipelines - Chemical Engineering
Dec 1, 2018 · As presented below, the optimization of pipe diameters can be accomplished using equations that relate the recommended velocity of fluids and the cost of energy. To determine the recommended velocities and compare what was published 10 years ago [1] to 2017, Equation (1) is used (Table 1, top). It is presented in Ref. 2.
Facts at your Fingertips: Cyclone Separators - Chemical Engineering
Jul 1, 2020 · Properly designed cyclones can remove nearly every particle in the 20- to 30-µm range. Typical cyclone separators have efficiencies of 70–90%. Gas inlet velocities should be in the range of 100 to 150 ft/s, but may be limited by re-entrainment of dust particles or by unacceptable pressure drop. At the tapered end of the chamber, where the ...
Pump Sizing and Selection Made Easy - Chemical Engineering
Jan 1, 2018 · The pump curves in Figure 3 illustrate the following pump options to choose. Option 1: 4 × 3 – 13 3,500 rpm. Installed cost of pump and motor: $20,000 for 3,500 rpm. Maintenance cost: 10% of installed cost per year. Motor efficiency: 65% (assumed) Option 2: 4 × 3 – 13 2,850 rpm. Installed cost of pump and motor: $40,000 for 2,850 rpm.
The Chemical Engineering Plant Cost Index
Start your Chemical Engineering PLATINUM membership today to get ALL of the Plant Cost Index + much more.. Get Chemical Engineering’s Plant Cost Index to Improve Plant Cost Estimates… and delivered online in advance of the print edition! For more than 46 years, chemical process industries (CPI) professionals — engineers, managers, and technicians — have used Chemical Engineering’s ...
Safety in Sulfuric Acid Storage Tanks - Chemical Engineering
Nov 1, 2015 · Figure 1. Storage tanks in sulfuric acid service require many special precautions to ensure safe operations and prevent accidental spills or ignitions. Sulfuric acid, sometimes called the “king of all chemicals,” is widely used in the chemical process industries (CPI) for the manufacture of various fertilizers and other chemicals.
Ethylene Production via Cracking of Ethane-Propane
Nov 1, 2015 · The process shown in Figure 1 is a steam-cracking process for ethylene production from an ethane-propane mixture. The process can be divided into three main parts: cracking and quenching; compression and drying; and separation. Figure 1. This process diagram shows an ethylene-production process via the cracking of an ethane-propane mixture.