Operation Analysis Of Longshan 600MW Air Cooling Power Plant Wet And Dry Joint Cooling Systems

Longsan power plant is put into operation earlier 600 MW coal-fired power plant Direct Air Cooling stage, backpressure unit design based on the time value of coal, electricity cost determined, the selected area of a small air-cooled radiator, high backpressure summer operation unit high coal consumption, resulting in poor economic unit, security is low.This paper introduces the Longshan power plant units in operation in summer high backpressure problems, we analyze the necessity of transformation of the unit. In the study, based on the proposed expansion of direct air cooling, condensing Table indirect air-cooled, wet peak cooling systems and other programs. Different options have their advantages and disadvantages, the paper feasibility and economic aspects of the comparison of the various programs aimed at finding highly feasible, economical and good solution. By comparison, the eventual adoption of the wet peak cooling system as a transformation plan, after the transformation of the unit to achieve joint wet and dry cooling.After transformation, the unit conducted a performance test, the test showed that in the summer high temperature environment, combined with wet and dry cooling can effectively reduce back-pressure units, to achieve the purpose of the transformation. Performance tests showed that under different ambient temperatures and the unit load, a different number of spikes best cooler circulating pump put into operation.After transformation, the unit carried out economic analysis showing that, through joint wet and dry cooling can significantly reduce coal consumption of the unit, has a good economy, the payback period is 5 years. Improve the economy and can save energy, reduce emissions effect. Summer high back pressure to solve the Direct Air Cooling Unit has a good guide, a good promotional value.