Packed-Bed CO2 (or NH3) Absorber
consists of a 4” ID borosilicate column containing about 30 inches
of ceramic Raschig ring packing. A 0.5 N NaOH solution (or water)
is fed to a distributor at the top of the column. Rotameters are
used to measure the air, CO2, and liquid feed rates. Two 20 L
polyethylene tanks and a centrifugal pump supply the NaOH feed. The
liquid flow to the top of the column is controlled by a needle
valve, this valve driven by an Arrick stepper motor controlled by a
computer program. The same experiment, but using ammonia and no
NaOH, is also offered.
Instrumentation includes a Dwyer stainless differential pressure transducer used, in addition to a water manometer, to measure the pressure drop across the packed column. A conductivity cell mounted in the liquid effluent line is connected to a Cole-Parmer conductivity meter and measures the transient tracer level following tracer injection above or below the packing. An MSA infrared analyzer measures the CO2 concentration in the effluent air. Three thermocouples (optional) may be mounted in the packing, but show very little temperature effect due to CO2 absorption. A NI A/D board digitizes all signals, under control of LabVIEW programs. A computer (not included) is used for data acquisition and control.
The experiment operates in four modes, namely:
The four modes of this comprehensive experiment can easily occupy two lab periods. Please contact us at email@example.com for more details on the experiment, and for price and delivery.
Copyright 2009: Engineering Experiments LLC. Design by Digital Moon Design