Large Heating Gas Boiler Flue Gas Waste Heat Recovery Of Applied Research And Analysis

The now generation and heating industry in our country in the fuel coal still accounts for the largest proportion, the environmental pollution is increasingly serious, the clean energy transformation is more and more important, especially in the Beijing area,coal-fired boiler gradually withdraw from the historical stage, gas boiler become protagonist.With the implementation of the national energy saving strategy, gas boiler energy saving more and more important, and its importance is given to flue gas condensation recovery technology and application.In the heat loss of gas boiler, exhaust heat loss accounts for a large share, including dry flue gas sensible heat and latent heat of water vapour.Part of the recycling exhaust heat, therefore, to improve the overall thermal efficiency of boiler, as well as the condensed water recycling, achieve the goal of energy saving and recycling measures in existing way of the boiler rear mounted to the condensing heat recovery can achieve the same energy saving effect.116 MW gas hot water boiler is the heating industry in a larger type furnace, is the main district heating, the existing boiler flue gas energy saving renovation of feasibility analysis, from the aspects of system operation, installation, can meet the requirements of installation of flue gas energy saving device in the tail.After a rigorous design and construction, to improve the overall efficiency of the boiler, meet the requirements of economic efficiency for the modification of the equipment investment.Must be in the reconstruction of the flue gas emission temperature control, avoid condensation, considering the economizer, some abnormal operation of the need for flue gas chimney anticorrosive processing, condensation water recycling equipment.