Abstract: A method of purging waste gases by adding to the gas, while it flows through an absorber, a neutralizing agent, such as lime, together with a liquid substance under such conditions that the liquid is evaporated and that a dry salt is left as reaction product. The absorption results in a reaction of the noxious compounds in the waste gases with the neutralizing agent, whereby dry salts are formed, which are removed from the absorber. The same neutralizing agent in the form of the aqueous solution or aqueous suspension may be used as the liquid substance. The liquid substance is supplied into the absorber downstream of the neutralized agent in the solid pulverized state.

Abstract: Waste gases are purged by adding to the gas while it flows through an abser a neutralizing agent together with water and then subjecting the gas to cooling so as to evaporate the added liquid. The adsorption then results in a reaction with the neutralizing agent whereby dry salts are formed which are removed from the process. The temperature of the waste gas is automatically and continuously measured and the volume of the water is adjusted automatically and continuously in accordance with the temperature measurements. The amount of waste gases is furthermore automatically and continuously measured, preferably at several places of the process, and the amount of neutralizing agent is continuously and automatically adjusted to the latter measurements so as to obtain always the stoichiometric equivalent for the reaction with the pollutants.

Abstract: Waste gases are purged by adding to the gas while it flows through an abser a neutralizing agent together with water and then subjecting the gas to cooling so as to evaporate the added liquid. The adsorption then results in a reaction with the neutralizing agent whereby dry salts are formed which are removed from the process. The temperature of the waste gas is automatically and continuously measured and the volume of the water is adjusted automatically and continously in accordance with the temperature measurements. The amount of waste gases is furthermore automatically and continuously measured, preferably at several places of the process, and the amount of neutralizing agent is continuously and automatically adjusted to the latter measurements so as to obtain always the stoichiometric equivalent for the reaction with the pollutants.