三级司炉证考试（Examination of three - level stoker）.doc

三级司炉证考试（Examination of three - level stoker） 1. Basic knowledge _ single choice 1. The heat loss caused by the high temperature of the slag discharged from the boiler is called (C) physical heat loss of ash D2 and low oxygen combustion produce less (C trioxide) D3. When the heating surface is slag, the heating surface of the heating surface (A decrease) G 4, the melting point of coal ash of boiler is mainly related to ash (A component). In G5 and boiler heat loss, (B exhaust heat loss) is the largest one. G6, industrial boiler water general (B basic) H7 and volatile content have a high impact on fuel combustion characteristics, high volatility content and easy combustion. The volatile content of the lignite is high, so it is easy to catch fire. H8, volatile fuel (A is easy) to catch fire and complete combustion. The moisture in coal is (C) useless. The main characteristics of M10 and coal fire preparation stage are (B precipitation volatilization). When the water in the coal burning is increased, the heat transfer heat (B) will be reduced in the furnace. The amount of ash contained in R12 and fuel combustion products (A few) R13 and thermodynamic agreement: the system is used for work (A). R14, thermodynamic agreement: the outside world takes the work of the system (B minus). The radiation force of the actual object is less than that of the absolute blackbody at the same temperature. One of the conditions that W16 and full combustion must have is (C enough burning time) In X17 and below, the most volatile coal is (B). The most commonly calorific coal is (B anthracite). Z19, before reaching the optimal excess air coefficient, increase the air volume, the boiler machinery does not completely burn the loss (C) so that the smoke temperature rises high. 1. Basic knowledge _ multiple choice The elements that can be burned in the chemical composition of M1 and coal include (ABC) a. carbon (C) B. Hydrogen (H) C. Sulfur (S). The combustion process of M2 and coal powder in th