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- Title
Determination of the Optimum Mix of Pollution Abatement Methods Used in a Thermal Power Plant - A Case Study.
- Authors
RAO, V. DURGA PRASADA; REDDY, N. SIVA RAMI; HARSHA, N.
- Abstract
In a country like India, one of the primary sources of emissions is thermal power plants. A draft regulation has been proposed by the Ministry of Environment and Forests for emission standards in coalfired power plants. This consists of notable reductions in particulate matter (PM), sulphur-dioxide (SO2), and oxides of nitrogen (NOX). The main thrust of this work is the determination of the optimum mix of pollution abatement methods used in a thermal power station near Vijayawada in the state of Andhra Pradesh by using the big - M simplex method of linear programming. The plant has 7 units working under 4 stages with a power capacity of 1,760 MW and generating 42 million kWh electrical energy per day. This case study is focused on the 6th and 7th power generating units of the plant. The abatement methods aimed at SO2, NOX and PM removal consist of taller smoke chimneys; filters such as desulphurisation plant, nitrogen oxides removal plants, and electrostatic precipitators; and better coal. Among these pollution abatement methods, electrostatic precipitators and taller chimneys are already in use at the plant. With the advent of new emission legislations, it is the need of the hour to understand different possibilities for the reduction of SO2 and NOX levels by 90% or more. So, in this study, a combination of desulphurisation, nitrogen oxide removal and better coal methods were added and the optimum mix of the fractional capacities of all these abatement methods were obtained by formulating a linear programming problem and solving it. This study helps in optimizing the maintenance costs of the SO2, NOX and PM removal equipment used in the plant. Also, the optimum solution suggests that a combined fractional use of all the pollution abatement methods helps in reducing the different air pollutants released from the plant, i.e., the emission rate of pollutants can be reduced to the required levels.
- Subjects
ANDHRA Pradesh (India); STEAM power plants; AIR pollutants; POWER plants; POLLUTION; SOLAR chimneys; PARTICULATE matter; NITROGEN oxides emission control; LINEAR programming
- Publication
Productivity, 2023, Vol 64, Issue 2, p210
- ISSN
0032-9924
- Publication type
Article
- DOI
10.32381/PROD.2023.64.02.10