It is understood that the total investment in environmental protection facilities of Huaneng Haimen Power Plant reaches 770 million yuan, which is more than 10% of the project investment. After the first phase 1 and 2 unit projects were put into production at the end of September last year, the desulfurization and denitrification equipment was synchronized with the main project.
In the centralized control room of Huaneng Haimen Power Plant, the reporter saw that technicians are staring at the screen of boiler burning, seawater desulfurization rate, seawater pH, and other related data changes on the computer screen, and taking notes carefully to record the production process in detail. The little changes that took place in. Through on-line monitoring and real-time monitoring, technicians are well aware of the production process and the power production work is carried out in an orderly manner.
â€œThe first case of Haimen Power Plant adopts seawater desulphurization.â€ According to the relevant person in charge of Huaneng Haimen Power Plant, the principle of seawater desulfurization is to introduce seawater into the plant through a circulating water diversion channel and desulfurize through a seawater desulfurization system. The acidic seawater generated after desulfurization is not It is discharged directly into the sea, but is treated as qualified seawater through the water quality recovery system, and then discharged into the circulating water drainage open channel. â€œIn the entire process of sulfur dioxide absorption and seawater recovery, there is no need to add any chemical reagents and produce any by-products. After the desulfurization, the seawater emission index is better than the national emission standard. At present, the seawater desulfurization rate of power plants is over 92%.â€
The use of seawater for desulfurization eliminates the need for chemical reagents and produces no by-products. Another advantage is water saving. It is understood that the two units of the first phase can save more than 200 cubic meters of fresh water per hour and save more than 1.1 million cubic meters of water a year.
In addition to the technologically advanced seawater desulfurization technology, Huaneng Haimen Power Plant simultaneously constructed a selective catalytic reduction denitrification device with a denitrification efficiency of over 60%. The unit's emission indicators for the power plant are far less than the national standards.
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