SHELL vaporizer burner cooling water
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Why cannot the cooling water temperature of coal burners be lower than 210°C?
The temperature of all equipment in direct contact with syngas must be maintained above 200°C to prevent corrosion caused by the condensation of ammonium chloride. Prevent excessive cooling of certain parts of the burner, thereby avoiding low-temperature condensation corrosion caused by ammonium chloride formed from the chloride ions and ammonia present in the coal.
A temperature of not less than 200°C is necessary primarily to prevent sulfur dew point corrosion; furthermore, if the cooling temperature is too low, the material will become brittle.
Is Texaco’s cooling water also above 210 degrees? Please explain ammonia chloride corrosion