Ultra-low Emissions Project of 1,000 MW Coal-Fired Power Plant of Zhejiang Zheneng Jiahua Power Generation Co., Ltd. in China

1. Profile

(1) Project site:

Port of Jiaxin, Zhejiang.

(2) Owner:

Zhejiang Zheneng Jiahua Power Generation Co., Ltd.

(3) Capacity:

Flue gas cleaning of 1,000 MW coal-fired power plant.

(4) Date of operation:

June 2014.

(5) Investment, construction and operation:

It is invested, built and operated by the Owner, and Zhejiang Tiandi Environmental Protection Engineering Co., Ltd. participated in the construction.

2. Major environmental problems to be addressed

Emission control of particulate matter, SO₂, NO_x and other pollutants in flue gas from the coal-fired power plant.

3. Technological process

The flue gas denitration technology, low-low temperature electric precipitation technology, flue gas desulfurization technology and wet electrostatic dust removal technology are integrated through synergestic configuration to remove pollutants such as NO_x, flue dust, SO₂, PM_2.5, SO₃ and mercury.

4. Environmental standards and/or main index limits to be followed

Given that the total sulfur content is no more than 0.8% and the ash content no more than 18% in the coal, the ultra-low emission limit of the coal-fired power plant will be implemented, with the emission concentration of particulate matter at the chimney outlet＜5 mg/m³, SO₂ emission concentration＜35 mg/m³, NO_x emission concentration＜50 mg/m³, and SO₃ (no more than 5 mg/m³, mercury and its compounds (no more than 3 µg/m³) will be removed together.

5. Environmental pollution control effects

The emission concentration of particulate matter at the outlet of the chimney was＜5 mg/m³, the emission concentration of SO₂ was＜35 mg/m³, the emission concentration of NO_x was＜50 mg/m³, the emission concentration of SO₃ was＜5 mg/m³, and the emission concentration of mercury and its compounds was＜3 µg/m³.

6. Investment and operation cost

The project investment was about RMB 194.5 million, with the unit investment of RMB 194.50/kWh.

Case highlights: The project adopts a typical ultra-low emissions process route for flue gas from the coal-fired power plant, and is the “National Demonstration Coal-Fired Power Plant for Energy Conservation and Emission Reduction” of the State Energy Administration.