Flue Gas Cleaning

Flue Gas Cleaning with Lime

During the 1970s, methods for effective flue gas cleaning in waste incineration were developed. These methods have since been further refined and improved.

Flue gases are purified from substances such as sulfur, chlorine, and fluorine before being released through the chimney. This is achieved by neutralizing and precipitating pollutants using various lime-based products.

Effective Methods

The most common method is flue gas desulfurization, where lime—often in the form of calcium carbonate or calcium hydroxide reacts with sulfur dioxide to form calcium sulfate. The calcium sulfate can then be removed from the flue gas, reducing sulfur dioxide emissions and preventing acid rain.

Lime is also used to bind particles and improve dust control by forming larger flocs that can be filtered out of the flue gas.

For maximum purification efficiency, it is essential to use high-purity lime products. SMA Mineral manufactures and supplies a range of products specifically designed for flue gas cleaning.

The most suitable product depends on the purification method used and the composition of the flue gases.