No.027 ; Reduction of SO2 Discharge by Wet Limestone Gypsum Flue Gas

No. 027

Classification of Technology:: Air Pollution Control
Type of Industry:: Electric
Subject:: Reduction of SO2 Discharge by Wet Limestone Gypsum Flue Gas
Desulfurization Process

1. Purpose
This is installed to reduce the concentration ( amount ) of SO2 discharged from chimney stack.

2. Details and the Time of Introduction
Introduction of the wet limestone gypsum flue gas desulfurization process.

Name of thermal electric power station	Installed unit		Fuel	By -product	processed gas volume 10³ Nm³/h	Month and year of commissioning
	No.	Output x 10³KW
Owase Mita	1	375	Heavy oil	Gypsum	1,200	April,1976
	2	375			1,200	June,1976
Hekinan	1	700	Coal	Gypsum	2,380	Oct,1991
	2	700			2,380	June,1992
	3	700			2,380	April,1993

3. Principle
Flow is shown on the next page.

4. Effect and Achievement

Name of power station	Fuel	Inlet SO₂ Concentration	Outlet SO₂ Concentration	Desulfurization rate
Owase Mita	Heavy oil	1,340 ppm	Under 50ppm	Over 96.3%
Hekinan	Coal	800 ppm	Under 50ppm	Over 93.8%

Implementing company:: Chubu Electric Power Co., Inc.

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