Galvanic Applied Sciences 943-TGS-CE, Operation Manual

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Revision 5 41 August 2021
Figure 17: Location of Vortex Cooler and Cooler Air Valve
Air flow is automatically switched on to the vortex cooler by a control solenoid when the
temperature inside the control cabinet exceeds a user-configurable set-point (by default,
35°C). Additionally, the cabinet cooler air valve is used for coarse flow rate adjustment to the
cabinet cooler and is typically set to fully open or fully closed. Minor throttling of the air flow
to the cabinet cooler is possible by opening this valve only partially. The interior temperature
of the control cabinet is indicated on the analyzer display as Cabinet Temperature . When
the cooler solenoid switches on, supplying air to the vortex cooler, the additional air flow into
the control cabinet will cause the over-pressure relief valve to open.
3.4.2 Condenser Cooling Air Flow Adjust Valve
Sulfur vapour is always present in tail gas streams in sulfur recovery units. However, the
presence of this sulfur vapour inside the analyzer sample probe and sample handling system
is detrimental for two reasons. Firstly, sulfur vapour can interfere with the measurement of
both hydrogen sulfide and sulfur dioxide. Secondly, if sulfur vapour inside the sample probe
or sample handling system were to condense, it could lead to flow blockages inside the probe
or sample handling system. For this reason, the sample probe is designed to eliminate as
much sulfur vapour from entering the sample probe and sample handling system as possible.
This is accomplished using a ‘ cold finger’ sample probe condenser at the probe tip that
condenses sulfur vapour inside the process pipe, as shown in Figure 18.
Vortex Cooler
Cabinet Cooler Air Valve