Power & Energy

Make your plant more sustainable

Learn about measuring pH value in the flue-gas desulfurization (FGD) of a power plant

How does measuring pH help the environment?

Our need for energy is growing, and so is pollution. Burning fossil fuels like coal and oil releases a large amount of sulphur dioxide, an extremely harmful poison for humans and the environment. Sulphur dioxide is responsible for acid rain, for example.

Thus, every modern power plant has a facility for cleaning and desulfurizing its flue-gas. This process involves a simple chemical reaction: by adding calcium carbonate and fresh air, the sulphur dioxide turns into calcium sulphate, better known as plaster.

An optimal reaction is important for several reasons. Firstly, it needs to absorb as much sulphur as possible and cause as little pollution as possible. Furthermore, a better quality of plaster leads to a higher market price. 

The best indicator for monitoring the gas’s chemical reaction is the pH-value.