Home » Our Product » Technical and Vocational Education and Training TVET » Training Workshop Labs » RTD Studies in Plug Flow Reactor

RTD Studies in Plug Flow Reactor Manufacturer,Supplier and Exporter in India

Product Code : EL-TWL-9137
Jlab Export is a leading RTD Studies in Plug Flow Reactor Manufacturer,and suppliers in India

A syringe port at the bottom of a stainless steel coil lets students inject a tracer pulse into steady water flow. They then see how far it has spread by the time it reaches the top. Water comes from one feed tank by a magnetic drive pump, set on a rotameter with a needle valve. The outlet samples give the residence time distribution of the coil.

Specifications

Reactor	Helical coil tube plug flow reactor, stainless steel pipe
Feed tank	One, for water
Feed circulation	Magnetic drive pump
Flow measurement	Rotameter with needle valve
Tracer injection	By syringe at the lower end of the coil
Sampling	At the top outlet of the coil
Objective	To plot the RTD curve of a plug flow reactor
Minimum order quantity	1 unit
Dispatch time	Usually 14–18 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Tracer Experiments on the Coil

Students set a steady flow, inject a small pulse of dilute Potassium Permanganate solution and start timing. Outlet samples are collected at short intervals and read on a Digital Photo Colorimeter. In dilute solution the absorbance rises in step with tracer concentration, so the readings trace the outlet curve.

Dividing each reading by the area under the curve gives E(t). The mean residence time t_m is the first moment of E(t), and the variance σ² is the spread about it. When the spread is small, D/uL is close to half of σ²/t_m², and t_m²/σ² gives N for the tanks-in-series model. The result helps explain conversion data from the Plug Flow Reactor (Coiled Tube Type), which also uses a helical coil.

Frequently Asked Questions

What is a stimulus-response test?
The flow is disturbed with a known input of tracer, and the outlet is watched to see how the vessel responds. Here the input is a pulse from the syringe at the lower end of the coil. The shape of the outlet curve shows how long fluid elements stay inside.

What makes a real coil depart from plug flow?
Liquid near the wall moves slower than liquid at the centre, and diffusion spreads the tracer along the tube. In vessels generally, channelling, recycling and stagnant pockets widen the curve too. The secondary flow at each turn of a coil mixes liquid across the tube and narrows the spread.

Can a step input be used instead of a pulse?
A step input means switching the whole feed to tracer solution at one moment. The outlet then traces an S-shaped F(t) curve, and E(t) is its slope. With one feed tank and a syringe port, this unit is set up for pulses.

How do I check the mean residence time?
Compare t_m from the E(t) curve with the coil volume divided by the flow rate. The two should agree. If t_m comes out smaller, part of the coil is not being swept by the flow. A long tail shows liquid trading slowly with stagnant pockets.