On-line hydrogen analyzer for exhaust gas treatment
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Should the hydrogenation online analyzer be placed at the reactor inlet, at the outlet, or on the outlet pipeline of the absorption tower? That one is more accurate.
It definitely can’t be placed at the inlet, as this analyzer is used to measure the hydrogen concentration after the hydrogenation reaction; therefore, it should be located at the outlet of the hydrogenation reactor. The outlet of the absorption tower is too far away, resulting in signal lag; it is better to place it at the outlet of the quench tower.
It should be at the outlet of the quench tower. Considerations for the installation of online hydrogen sensors need to take into account two aspects: 1) Process requirements: detection requirements; 2) Equipment installation requirements: the installation of online sensors has specific requirements regarding temperature and composition. In the existing SCOT process, the outlet of the quench tower meets the requirements best
Apart from the quench tower outlet, I have not seen it designed in any other location.
They are generally installed after the quench tower. . . It might be due to the temperature; the temperature in the Ike cooling tower is 40 degrees, making it easy to measure
Some are also placed at the outlet of the absorption tower; the downside is that the signal may be somewhat delayed.