Economic evaluation of the rationality of using multivortex separators in painting and drying chambers

Abstract

The article provides an economic assessment of the feasibility of application of multi-vortex separators designed to increase the operational life of fine filters in the technological line of an enterprise with paint-drying chambers. It is shown that the rapid wear of fine filters leads to the need for their frequent replacement. As a result, there are significant economic costs. To increase their service life, multi-vortex separators are proposed. The principle of their operation is described. An economic calculation has been carried out for 3 variants of integrating multi-vortex separators into the production line: 1) in front of ceiling filters; 2) in front of floor filters; 3) in front of ceiling and floor filters. In the work, such parameters as cash flow, discounted payback period, net discounted income and profitability index were calculated. The results showed that the project for the introduction of multi-vortex separators into the paint-drying chamber is cost-effective if their efficiency is more than 0.4, since the PI profitability index is more than 1. The net discounted income of the NPV project with the efficiency of multi-vortex separators from 0.4 to 0.8 is from 159.6 to 749.12, from 976.1 to 2417.4 and from 1135.7 to 3166.5 thousand rubles, when implementing the project for options 1, 2 and 3, respectively, with the useful life of the separator N = 10 years. The payback period of the project is from 12 months. As a pilot project, 1 option can act, i.e. the placement of multi-vortex separators in front of ceiling filters. This is due to the minimum investment costs among all options, amounting to 150,000 rubles and a relatively fast discounted payback period of the project, ranging from 12 to 39 months, depending on the effectiveness of multi-vortex separators.