Adsorption purification of exhaust gases from ship power equipment

Tightening the requirements of international and national standards for the content of harmful substances in the exhaust gases of internal combustion engines (ICEs) installed on various types of transport requires the development of modern technical and technological solutions aimed at their purification. The most harmful components of exhaust gases are nitrogen oxides, sulfur oxides, carbon monoxide and unburned hydrocarbons. In this case, the greatest technical difficulty is reducing the concentration of carbon oxides. A method for purifying exhaust gases from acid oxides and solid particles using the mechanism of their adsorption by solid matter is considered. For these purposes, a comprehensive device for purifying exhaust gases from internal combustion engines for transport purposes has been developed. The operation of the proposed device is based on the technology of adsorption purification of gases from carbon oxides using granulated blast furnace slag as an adsorbent. The advantages of the method are the absence of expensive catalysts and consumable chemical reagents in the design of the device. The results of an experimental assessment of the effectiveness of this technology in the proposed pilot installation are presented. Based on experimental studies of the pilot plant, graphical and mathematical dependences of the efficiency of carbon oxide extraction on the volumetric flow rate of exhaust gases were obtained. It was found that the minimum value of the efficiency of CO extraction from exhaust gas, equal to 10.14%, will occur at a volumetric flow rate of exhaust gas of 66.92 m(3)/hour, the maximum - 33.94% at 19.52 m(3)/hour. For carbon dioxide, the minimum value of the efficiency of its extraction from exhaust gases, equal to 80.81%, will occur at an exhaust gas flow rate of 19.52 m(3)/hour, and the maximum value, equal to 89.15%, will occur at 66.92 m(3)/hour.