The hydrogen from upstream reforming contains chlorine – how can hydrogen-using equipment detect this?
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Since the reformed hydrogen contains chlorine, to prevent salt formation at the inlet of the new hydrogen machine, the plant has installed a wash tower in series after the low-pressure gas desulfurization tower, before the gas proceeds to membrane separation. After washing, the water flows into the water storage tank. Now here’s the problem: it’s possible that ammonium chloride has accumulated in the reaction air-cooling system. I would like to ask whether a pH meter can be used on the water after washing in order to determine its acidity or alkalinity, and thus assess whether the hydrogen from the reforming process contains chlorine
Sure. Reformed hydrogen chloride ion content is low, resulting in little variation in pH readings.
The dechlorination tank upstream failed, and a one-day shutdown of the wash tower could clog the filter at the inlet of the new hydrogen machine!