REDUCTION OF NOX EMISSIONS DUE TO THE USE OF WATER-FUEL EMULSION PREPARED BY THE DESIGNED ROTOR-PULSATION APPARATUS
Keywords:
water-fuel emulsion, rotary-pulsating apparatus, fuel, NOx emissions, marine diesel, dispersers, fuel system modernizationAbstract
Marine vessels with diesel engines must comply with Regulation 13 of Annex VI of MARPOL IMO and the Technical Code 2008 NOx. An International Air Pollution Prevention Certificate (EIAPP certificate) is required for each engine. Regardless of which technology is used to meet the requirements, the same testing requirements and NOx emission limits must apply. The EIAPP certificate is proof that the engine system, including the NOx emission reduction technology, is compliant. One of the methods of primary reduction of NOx emissions by marine diesels is the use of water-fuel emulsion (WPE), where water in the form of the smallest droplets is distributed in the fuel, and its content corresponds to no more than 20% of the fuel volume.
The article analyzes the choice of an apparatus for preparing a water-fuel emulsion.
To achieve the goals of the research, a rotary-pulsation apparatus with a device for dosing and supplying water was selected.
In the process of preparing materials for publication, the design of the developed rotary-pulsation apparatus is described, the scheme of this installation and the scheme of modernization of the fuel system with the developed installation for the preparation of water-fuel emulsion are given. Also, in the course of research, an installation with this designed rotor-pulsation apparatus and a laboratory diesel generator, which runs on the D-246.2 engine, was developed.
In the course of tests of the developed rotor-pulsation device on a laboratory diesel generator with a D-246 engine, during its operation on a water-fuel emulsion prepared with the help of the developed rotor-pulsation device and on fuel without the addition of water, a decrease in the content of nitrogen oxides NOx in compared to the fuel without water content, which testifies to the efficiency of the developed rotor-pulsation device.
The quality and stability of the water-fuel emulsion prepared by the developed rotary-pulsation apparatus and the apparatus without a dosing device were also investigated.
In the conclusion of all the conducted studies, it can be stated that the developed rotary-pulsation device fulfills the functions assigned to it and can be used to reduce emissions of nitrogen oxides NOx on ships.
