| In recent years, with the start of a new round of power system reform, the coal-fired power as the main power is brunt first. Bearing the four round of price down from 2013 to 2016, the coal-fired power must accept the environmental pressure surge test. The country environmental requirement of the thermal power is becoming higher. If emission is not up to standard, the plant will face the danger of shutting down. Under increasing costs from the emissions reduction at the same time, coal-fired power plant must accept price cut constantly. Under the both pressure of the higher environmental protection requirements and the lower electricity price, thermal power enterprises need more competitive operation strategy, to seek more space for its production development, in order to realize the maximization of economic benefit.Huaneng Dandong power plant has two feasible scheme to reduce emissions that are IGCC retrofit scheme and ultra-low emissions retrofit scheme. The paper compares their advantages and disadvantages, applying fuzzy hierarchy comprehensive evaluation method to evaluate the two kinds of retrofit scheme to reduce emissions, and has carried on the quantitative study. The study finds that IGCC retrofit scheme better comprehensive benefits, the operating status of Huaneng Dandong power plant can have a better improvement. Paper puts forward countermeasures for IGCC retrofit scheme.Research shows that it is concluded that two kinds of schemes can meet the national emission standards by using fuzzy hierarchy comprehensive evaluation method to evaluate the IGCC retrofit scheme and ultra-low emissions retrofit scheme. IGCC retrofit scheme is a more expensive investment, but has very significant effection. Its cost recovery is also very effective. Using the fuzzy hierarchy comprehensive evaluation method to accurately evaluate the two solutions, it is concluded that IGCC retrofit scheme of environmental benefits, the most obvious evaluation results for the optimal membership degree is 0.672. For the optimal economic benefit evaluation result, and membership degree is 0.548. Social benefit evaluation result for the optimal, membership degree is 0.403. Ultra-low emissions retrofit scheme of environmental, economic and social benefits are so-so. So this article concluded that IGCC is more suitable for Huaneng Dandong power plant’s effective retrofit scheme to reduce emissions. |
