%0 Journal Article
%T An Absorption-Adsorption Apparatus for Gases Purification from SO<sub>2</sub> in Power Plants
%A Christo Boyadjiev
%A Boyan Boyadjiev
%J Open Access Library Journal
%V 4
%N 5
%P 1-7
%@ 2333-9721
%D 2017
%I Open Access Library
%R 10.4236/oalib.1103546
%X <div style="text-align:justify;">
	<span style="line-height:1.5;">Different companies propose methods and apparatuses for
waste gases purification from S§°</span><sub>2</sub><span style="line-height:1.5;"> using two-phase absorbent (CaCO</span><sub>3</sub><span style="line-height:1.5;"> suspension).The basic
problem of the carbonate absorbents is that its chemical reaction with SO</span><sub>2</sub><span style="line-height:1.5;"> leads to CO</span><sub>2</sub><span style="line-height:1.5;"> emission, which leads to similar ecological problems. The use of synthetic anionites
as adsorbents for gas purification from SO</span><sub>2</sub><span style="line-height:1.5;"> provides possibilities for
adsorbent regeneration. In a proposed method, the waste gas purification is
realized in two steps¨Cphysical absorption of SO</span><sub>2</sub><span style="line-height:1.5;"> with water in a
counter-current column and chemical adsorption of&nbsp;from the
water solution by sy</span><span style="line-height:1.5;">nthetic anionite particles. The adsorbent regeneration is
made with NH</span><sub>4</sub><span style="line-height:1.5;">OH solution. The obtained (NH</span><sub>4</sub><span style="line-height:1.5;">)</span><sub>2</sub><span style="line-height:1.5;">SO</span><sub>3</sub><span style="line-height:1.5;"> (NH</span><sub>4</sub><span style="line-height:1.5;">HSO</span><sub>3</sub><span style="line-height:1.5;">) is used (after reaction with HNO</span><sub>3</sub><span style="line-height:1.5;">) for production of concentrated SO</span><sub>2</sub><span style="line-height:1.5;"> (gas) and NH</span><sub>4</sub><span style="line-height:1.5;">NO</span><sub>3</sub><span style="line-height:1.5;"> (solution). The proposed method permits
to be used the absorption columns, where are used the CaCO</span><sub>3</sub><span style="line-height:1.5;"> suspensions. In this paper, the efficiency
of the waste gases purification from S§°</span><sub>2</sub><span style="line-height:1.5;"> 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.</span>
</div>
%K Absorption
%K Adsorption
%K Gas Purification
%K SO<sub>2
%K </sub> Power Plant
%K Convection-Diffusion Model
%K Average Concentration Model
%U http://www.oalib.com/paper/5285052