Why is the pH of the water in the vaporization quench chamber relatively low?
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Why is the pH of the water in the vaporization quench chamber low? Is it because acidic substances are produced during the gasification process? So in the entire gasification process, which areas are prone to the formation of acidic substances? What is the mechanism? Does anyone have any relevant literature or practical experience?
The gasification reaction produced a large amount of acidic gases
As mentioned above, it means that the gasified components contain a large amount of acidic gases. It dissolves in water, causing the water quality to become acidic.
Where does the formic acid mentioned in those articles come from? How was it generated?
CO2, high-pressure dissolution not resolved
Carbon dioxide = carbonic acid, which is a weak acid. In that case, is the pH in the powder coal gasification quench chamber higher than that in the water-coal slurry gasification quench chamber?
Since water-coal slurry still requires heating water, the amount of CO2 produced is much higher than that of dry coal powder
Well, the higher the carbon dioxide level, the more carbon dioxide will be dissolved, and the pH should be lower. But why do some articles mention high levels of formic acid? Where does this formic acid come from?