Flue Gas Desulfurizer Mass and Energy Balance in 300 MW class Subcritical Coal Fired Power Plant for Retrofit Application.
Muhammad Arif Susetyo (a*), Alfian Muhammad Reza (b), Firman Bagja Juangsa (c), Yanda Prakasa (d)

a) PT PLN Unit Induk Pembangunan Jawa Bagian Tengah I
*m.arifsusetyo[at]pln.co.id
b) PT PLN Enjiniring
c) Fakultas Teknik Mesin dan Dirgantara Institut Teknologi Bandung
d) PT PLN Pusat Pemeliharaan Kelistrikan

Abstract

Based on the recent implementation of Ministry of Life and Environment (MOLE) Regulation No. P.15/MENLHK/SETJEN/KUM.1/4/2019 regarding Power Plant Flue Gas Emission, in replacement of MOLE Regulation No. 21 year 2008, there is a reduction of maximum Sulfur Dioxide (SO2) concentration in flue gas emission of Coal Fired Power Plant (CFPP), from 750 mg/Nm^3 @7% O2 content (dry basis), to 550 mg/Nm^3 in existing CFPP, and 200 mg/Nm^3 in CFPP constructed after the implementation of the regulation. Thus, arises the necessity for consumption of Coal with lower sulfur content, and/or retrofitting of Flue Gas Desulfurizer System (FGD) system in CFPP, not yet equipped with FGD system. One of the apllicable system for retrofit is Sea Water FGD (SWFGD).

This paper explores the energy and mass balance of SWFGD system for application in 300 MW subcritical reheated steam CFPP. Certain characteristics of the system is +7 Celcius condenser cooling water temperature increase, instead of +5 Celcius in come CFPP with SWFGD integrated in its design. Operational aspect such as additional increase in condenser cooling water due to SWFGD Absorber interface, and relation between maximum sulfur content in coal in relation to unit partial load is quantified.

Keywords: Emission control; Power generation; Sea Water Flue Gas Desulfurization; Coal Fired Power Plant; Sulfur; Combustion

Topic: Environmental Engineering