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Boyadjiev, Chr., Boyadjiev, B., Doichinova, M. and Popova-Krumova, P. (2014) Method and Apparatus for Gas Cleaning from Sulfur Dioxide. Bulgarian Patent Application No. 111398.

has been cited by the following article:

  • TITLE: An Absorption-Adsorption Apparatus for Gases Purification from SO2 in Power Plants

    AUTHORS: Christo Boyadjiev, Boyan Boyadjiev

    KEYWORDS: Absorption, Adsorption, Gas Purification, SO2, Power Plant, Convection-Diffusion Model, Average Concentration Model

    JOURNAL NAME: Open Access Library Journal, Vol.4 No.5, May 3, 2017

    ABSTRACT: Different companies propose methods and apparatuses for waste gases purification from SО2 using two-phase absorbent (CaCO3 suspension).The basic problem of the carbonate absorbents is that its chemical reaction with SO2 leads to CO2 emission, which leads to similar ecological problems. The use of synthetic anionites as adsorbents for gas purification from SO2 provides possibilities for adsorbent regeneration. In a proposed method, the waste gas purification is realized in two steps–physical absorption of SO2 with water in a counter-current column and chemical adsorption offrom the water solution by synthetic anionite particles. The adsorbent regeneration is made with NH4OH solution. The obtained (NH4)2SO3 (NH4HSO3) is used (after reaction with HNO3) for production of concentrated SO2 (gas) and NH4NO3 (solution). The proposed method permits to be used the absorption columns, where are used the CaCO3 suspensions. In this paper, the efficiency of the waste gases purification from SО2 is increased in an absorption-adsorption apparatus, where the absorption is realized in co-current flows and the adsorption takes place in the flexible adsorbent. For this is proposed a new absorption-adsorption column apparatus with bubbling plates. A mathematical model of the absorption-adsorption process is presented, too.