Gas Absorption Plant- HCL, SO2, Cl2, HBr

Absorption is a thermal separation operation in which a selective liquid (scrubbing liquid, absorbing agent) absorbs a component (absorbed substance) of a gas mixture.

The objectives of absorption are:-

• To separate gas mixtures as required by the process.
• To purify a component of a gas mixture.
• To recover valuable components from waste gases.
• To remove harmful gases from waste gases or synthesis gases as part of environmental protection.

In addition, however, absorption also finds application in the extraction of a commercial product (e.g. absorption of NH3 in water , production of hydrochloric acid and nitric acid etc). Depending on the nature of the absorption process, a distinction is made between scrubbing liquids which have a physical and chemical action. In many cases absorption plants mean high investment costs. It is all the more critical that such plats have a long service life, low maintenance and service costs and as great a flexibility as possible in relation to changing applications.