Desuperheater Temperature Control System Using Distributed Control System (DCS)

Abstract

The Control System for Desuperheater Temperature of Boiled water is a critical task in industry. In this Paper reviews the study and collection of measurement datas from in TNPL ( Tamil Nadu Newsprint and Papers Limited) Power Plant , there are three sections namely Deaerator tank, Boiler and Turbine. I have done this work in the turbine section. The steam f rom the Boiler is at very High Temperature. The temperature of this high temperature steam is lowered by spraying the oxygen dissolved water using Desuperheater. The spraying water is controlled by Distributed Control System ( DCS ). The Input to the turbine is at High Temperature and High Pressure steam. The output of the turbine is mentioned in Mega Watts. When the superheated steam is given to the turbine then the Temperature and Pressure output steam condition is Low. The Low level steam is fed to the Desuperheater depends upon requirements in the various units. It is supplied to each section in TNPL.