This fossile is probably over 2 million years 这化石可能超过二百万年了
Ash deposition on boiler heat exchanger surface is a common phenomenon in fossile fuel powered power plant . this paper focuses on the research building a suitable model of soot deposition status of heat exchanger surface , and constructs a online monitoring system based on the built models . this will provide a reliable foundation to the optimal scheduling of the soot blowers 本文针对锅炉受热面灰污染危害严重的普遍现象,以北仑电厂600mw1 #锅炉作为研究对象,进行了有关电站锅炉受热面灰污染在线监测的研究工作,为吹灰优化经济运行提供了可靠的依据。