Search results
Results from the WOW.Com Content Network
A typical plug flow reactor could be a tube packed with some solid material (frequently a catalyst). Typically these types of reactors are called packed bed reactors or PBR's. Sometimes the tube will be a tube in a shell and tube heat exchanger. When a plug flow model can not be applied, the dispersion model is usually employed. [2] [3]
In fluid mechanics, plug flow is a simple model of the velocity profile of a fluid flowing in a pipe. In plug flow, the velocity of the fluid is assumed to be constant across any cross-section of the pipe perpendicular to the axis of the pipe. The plug flow model assumes there is no boundary layer adjacent to the inner wall of the pipe.
is the reactor volume; is the molar flow rate per unit time of the entering reactant A; is the conversion of reactant A; is the rate of disappearance of reactant A per unit volume per unit time; For a plug flow reactor (PFR), the following relationship applies:
Fusing a mixed stirred tank reactor (STR) with a plug flow reactor (PFR) in a two-compartment system offers significant options in flow characteristics to meet specific process requirements. This configuration allows for precise control over various factors, including improved bioprocess results by enhancing residence time distribution and ...
Segmented flow is an approach that improves upon the speed in which screening, optimization, and libraries can be conducted in flow chemistry. Segmented flow uses a "Plug Flow" approach where specific volumetric experimental mixtures are created and then injected into a high-pressure flow reactor. Diffusion of the segment (reaction mixture) is ...
The residence time scale can take the form of a convection time scale, such as volumetric flow rate through the reactor for continuous (plug flow or stirred tank) or semibatch chemical processes: D a I = reaction rate convective mass transport rate {\displaystyle \mathrm {Da_{\mathrm {I} }} ={\frac {\text{reaction rate}}{\text{convective mass ...
This is a list of software used to simulate the material and energy balances of chemical process plants. Applications for this include design studies, engineering studies, design audits, debottlenecking studies, control system check-out, process simulation, dynamic simulation, operator training simulators, pipeline management systems, production management systems, digital twins.
Plug flow reactors have the additional advantage of greater separation between reactants and products giving a better concentration profile. The small size of continuous reactors makes higher mixing rates possible. The output from a continuous reactor can be altered by varying the run time. This increases operating flexibility for manufacturers.