Optimization Research on Adjacent Boiler Heating System of Ultra Supercritical Unit
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Abstract
In this paper adjacent boiler heating system of Jiangxi Datang Fuzhou 2×1 000 MW ultra supercritical unit has been studied. In consideration of the hot washing temperature of the project, one stage adjacent boiler heating system was adopted. Boiler feedwater was directly heated to hot washing temperature in deaerator by adjacent boiler auxiliary steam. In the whole process of hot washing of boiler, the boiler was not ignitied. It can save a mount of fuel in the boiler startup process, with great energy savings and economic benefits. After adopting one stage adjacent boiler heating system, two units' discount comprehensive income of 20 years can reach up to 14.04 million yuan.
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