Issues regarding the pH of water in hydrogen production furnaces and the pH of superheated steam

The pH of the water in the hydrogen production furnace is relatively high, but the pH of the steam being less than 9 may be due to some non-volatile acidic substances (such as carbonates) remaining in the boiler during the evaporation process, which results in a lower pH in the steam. To solve this problem, the following aspects can be considered: 1. Check and adjust the chemical additives in the boiler feed water. Increase the dosage of alkaline chemicals used to raise the pH, such as phosphates or sodium hydroxide, in order to increase the pH of boiler water and steam. 2. Periodically blow down the boiler water to remove dissolved solids and other impurities accumulated inside the boiler. 3. Ensure good water circulation in the boiler to prevent localized overheating of the water due to high temperatures in certain areas, as well as excessive evaporation rates; these factors can affect the water’s chemical composition. 4. Consider using a deaerator to remove dissolved oxygen from the water, as dissolved oxygen can affect the pH value of the water through oxidation. Through the above measures, it is possible to try to adjust and maintain the pH value of the steam, ensuring the proper operation of the system. At the same time, it is also recommended to conduct regular chemical analyses of steam and boiler water to monitor the effectiveness of water treatment. .