Researches Concerning the Intake of Carbon Dioxide Resulted from the Fossil Carbon Burning

Abstract

The research by modelling has been particularized at the case of removal of carbon dioxide from hot burning gases. The gases washing with specific solution in mobile packed bed expresses the basic of proposed removal procedure of carbon dioxide. A large assembly of differential equations give the mathematical model of the considered procedure. The given simulations show that the carbon dioxide and sulphur dioxide removal occurs with high intensities depending of the concentration level of the liquid active species.

Researches Concerning the Intake of Carbon Dioxide Resulted from the Fossil Carbon Burning

“…The employing of proposed model to determine the yield of carbon dioxide and sulphur dioxide and also to evaluate the vaporized water quantity needs to know all the model parameters. The data presented below, adapted according to our previous studies [2][3][4][5][6][7][8][9], emphasized that the calculated values correspond to the maximum efficiency conditions of mobile bed operating.…”

“…The mathematical model emphasizing the inter-phase mass transfer of water vapour, carbon dioxide and sulphur dioxide and also the heat transfer is based on differential equations of mass and heat balance together with kinetics relationships of mass and heat transfer referring to an element "dz" from mobile packed bed [2].…”

“…This model is a simplified variant of other models employed to describe in addition the absorption-desorption processes associated with chemical reaction in gas and liquid [2,3]. In above relationships the equilibrium molar ratio of water vapour in gas, Y 1 *, is expressed by correlation (10), wherein the saturation pressure of water vapour at the temperature t l , p s , is calculated by means of Antoine equation 11and the correction factor, f c , depends on liquid medium (calcium carbonate suspension or potassium carbonate solution).…”

“…Axial mixing coefficient, D l, is determined according to the procedure proposed in our previous studies [3,5] by means of the following set of correlations:…”

“…where H d is expressed in dm [5]. The dependence between axial mixing coefficient and specific flow rate of washing water is emphasized in table 4.…”