Impulse tracers

The impulse tracer response curve of a pilot plant reactor has the shape of a trapezoid with the given equations. A first order reaction conducted in... 

An impulse tracer tracer test gave the response represented by given equations. A first order reaction with k = 0.8 is conducted in this vessel. Find conversions by three models (a)... 

Impulse tracer response of a reactor made up of two equal stirred tanks connected by a long pipeline is represented by the equation C = 20 t2exp(-3.5t)... 

PS-08.13. DISPERSED AND SEGREGATED Impulse tracer response data... 

Wen and Fan [6] have provided a comprehensive listing of various tracers and experimental techniques for determining the RTD in flow systems. Recent studies [10,11,12] have been performed employing an impulse tracer to determine the RTD in bubble columns and an oscillatory flow electrochemical reactor. The author [13,14] has employed both step-change and an impulse to determine the RTD of nozzle type reactors analysis of the RTD involves an atomic absorption spectrophotometer (AAS), a cine-projector, and a chart recorder. Figures 8-7 and 8-8 show the nozzle-type reactors and the AAS, respectively. Figure 8-9 gives a typical response curve from the AAS. 

If the feed to a system is switched instantaneously from one supply to another, a step-change residence time experiment can be performed. The second feed must be distinguishable from the first, but both should have the same density and viscosity and behave in the same manner within the system. A step signal is often performed by switching from undyed to dyed feed, unless the tracer is expensive or unpleasant (e.g., radioactive tracers) in such a case, an impulse tracer is used. 

EXPERIMENTAL METHODS, 264 Intrusive Probes, 265 Steady State Tracers, 267 Impulse Tracers, 269 Optical Tracers, 274 Chemical Reaction, 276... 

In the impulse tracer test, the tracer input is an impulse function. Here, a fixed amount of tracer is injected in one shot into the fluid stream at some reference time 9 = 0. Theoretically,... 

Using the above equation, the exit age distribution function E(0) is obtained from the C-curve of the impulse tracer test and is shown in Figure 3.50. 

An impulse tracer test is conducted on a CSTR. The response to impulse input is reported in the below table ... 

Assume that the vessel is subjected to an impulse tracer test. For a unit impulse input, the tracer concentration at the vessel inlet Co(0) is... 

Program subroutine to calculate E versus theta from the impulse tracer test data Program subroutine to evaluate the integral value by trapezoidal method Program subroutine to calculate mean and variance from impulse tracer test data Program subroutine to calculate number of tanks n in tanks in series model Program subroutine to calculate Peclet number Pe... 

Subroutine to calculate E versus theta from the impulse tracer test data... 

Response of impulse tracer test on solids flow in a rotary tubular reactor. 

The central volume principle can be extended to a multiphase system consisting of P various immiscible subregions but with a single flowing phase (5,44). Then, if the processes for tracer exchange among various phases are linear and the equilibrium distribution of tracer is linear, the mean of an impulse tracer response is ... 

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