Chemical Reaction Engineering Module
User Stories
 | TEL Technology Center, Albany, NY
Semiconductor wafer manufacturing involves a number of processes, ranging in size from nanometers to meters. This, along with coupling the physics of chemical... |
 | Replisaurus Technologies AB, Kista, Sweden
Only through advanced packaging techniques can we take advantage of state-of-the-art microelectronic devices. The flip-chip method has become a cost-effective... |
 | Royal Philips Electronics NV, Drachten, Netherlands
Behind your clean, close shave there is an enormous amount of high technology, even in electric shavers that have been around for decades. On its... |
 | Amsterdam Water Supply (AWS), Amsterdam, Netherlands
Amsterdam Water Supply AWS of the Netherlands produces some of the cleanest drinking water in the world, almost 100 million cubic meters per year in fact.... |
 | Waters Corp., Milford, MA, USA
At Waters Corp., people who work in R&D have seen a lot of benefits from doing
simulations — from understanding fundamentally what happens to... |
 | Witteveen+Bos, Deventer, The Netherlands
A group of consulting engineers used COMSOL Multiphysics® and the Mixture Model application mode at a wastewater treatment plant to determine that simply... |
Example Models
 | This model treats the flow field and species distribution in an experimental reactor for studies of heterogeneous catalysis. The model exemplifies the coupling of free and porous media flow in fixed bed reactors.
The reactor consists... |
 | The hydrolysis of propylene oxide into propylene glycol is an important chemical process with 400,000 metric tons produced worldwide each year. Propylene glycol finds wide application as a moisturizer in foods, pharmaceuticals, and... |
 | In the simplest terms, High Performance Liquid Chromatography (HPLC) is a separation technology - a process used to separate different chemical species that are in a mixture. And while HPLC is one of many separation technologies... |
 | Tubular reactors are often used in continuous large-scale production, for example in the petroleum industry. One key design and optimization parameter is the conversion, or the amount of reactant that reacts to form the desired product.... |
 | In static mixers, also called motionless or in-line mixers, a fluid is pumped through a pipe containing stationary blades. This mixing technique is particularly well suited for laminar flow mixing because it generates only small pressure... |
 | Chemical vapor deposition (CVD) is an important step in the process of manufacturing microchips. One of the common applications is the deposition of silicon on wafers at low pressure. Low pressure reactors are used to get a high... |
 | A key optimization parameter in a fuel cell is the design of the reactant and product channels and inlets and outlets. Good designs require that the electrodes are well fed with a reactant and that products are removed as quickly as... |
 | Large-scale reactors are usually made from stationary parts, often involving baffles. They make use of the baffled- imposed turbulence to provide mixing within the reactor. Yet, such reactors need to be optimized as too much baffling can... |
 | This model presents a study of the current density distribution in a solid oxide fuel cell (SOFC).
The model includes the full coupling between the mass balances at the anode and cathode, the momentum balances in the gas channels, the... |
 | This example shows 1D steady-state multicomponent gas diffusion. The diffusion of three gases in a Stefan tube is modeled in 1D. The steady-state mass fraction profiles are calculated. It exemplfies in a simple way manipulation of... |
 | In this example, drug-release from a biomaterial matrix to damaged cell tissue is modeled. Specifically, a nerve guide delivers a regenerating drug to damaged nerve ends. The model involves detailed drug release kinetics, with rate... |
 | Several factors influence a diesel particulate filter’s (DPF) efficiency and durability. Important issues include the removal of soot particles from the filter membranes and the influence of thermal stress on the ceramic structure,... |
 | Chemical vapor deposition (CVD) allows a thin film to be grown on a substrate through molecules and molecular fragments adsorbing and reacting on a surface. This example illustrates the modeling of such a CVD reactor where... |
 | As reactant monomer converts into polymer chains, the density of the reacting mixture often changes notably. In this example you will look at how this effect impacts the total production of polymer in a process. The liquid phase... |
 | This model considers the thermal cracking of acetone, which is a key step in the production of acetic anhydride. The gas phase reaction takes place under nonisothermal conditions in a plug-flow reactor. As the cracking chemistry is... |
 | This model demonstrates the use of moving meshes in the application of copper electrodeposition on circuit boards. In these environments, the presence of cavities or 'trenches' are apparent.
The model makes use of the Tertiary,... |
 | This example illustrates multiphase flow modeling in a bubble column reactor. The reactor is filled with water and gas bubbles are injected from the bottom. Due to buoyancy, the bubbles rise, inducing a circulating motion of the liquid.... |
 | Wastewater treatment is a several-step process for removing contaminants. Firstly, large, solid particles are removed through sedimentation, flotation, and filtration. And then in a second step, biological treatment causes the smaller... |
 | Removing halogen groups from hydrocarbons is an important reaction step in several chemical processes. One application is water purification. Other examples involve organic synthesis, where the removal of halogen groups serves as a... |
 | In fuel cell power generators, a steam reformer unit typically produces the hydrogen needed for the cell stack.
This example illustrates the modeling of a steam reformer. The reformation chemistry occurs in a porous catalytic bed where... |
 | Freeze-drying, or lyophilization, is a process for drying heat-sensitive substances such as foods, blood plasma, and antibiotics. The wet substance is frozen and then, through sublimation, ice (or some other frozen solvent) is removed in... |
