Degassing of water with exhaust gases of the boiler

Abstract

A method for degassing the make-up water is described, the feature of which is the use of the exhaust gases of the boiler after the smoke exhauster as a desorbing agent. In the exhaust gases of the boiler, there is a small portion of corrosive oxygen, due to the fact that all oxygen is consumed in the combustion process in the furnace. The problem of the possible saturation of the deaerated water with carbon dioxide due to its increased content in the boiler waste gases is solved by dispensing the alkaline agent into the make-up water. The mass exchange efficiency of the make-up water degassing by the proposed method is estimated, the required specific consumption of the exhaust gases for deaeration is theoretically calculated. It is shown that the consumption of the desorbing agent, which is the exhaust gas, is sufficient for degassing practically any quantities of nutrient and make-up water.