Abstract: Abstract:The influence of addition of different organic acid on dissolution rate of limestone was analyzed. To add four kinds of organic acid can increase dissolution rate of the limestone. The influence of adding the four kinds of organic acid on the pH value of the limestone slurry was measured. The measurement result shows that the organic acid can stabilize the pH value of the limestone slurry.

Key words: Key words:wet desulphurization, organic acid, dissolution rate, pH value