500t方案2热平衡.doc

500t/d石灰生产线工艺平衡计算 1.基本要求和条件 1.1 500tpd Lime Plant Project； 1.2 Geographical Data Plant location III Region – Atacama CHILE Altitude (site level) 200 m above sea level 1.3 Climatic Data Temperature Annual average 15.0 ℃ Average of the hottest month: Max. 18.5 ℃ Average of the coldest month: Min. 12.5 ℃ Relative humidity Annual average 80 % Average of the hottest month: Max. 78 % Average of the coldest month: Min. 80 % Rainfall: Max. (within a hour/day) 5 mm Annual average 50 mm Number of rainy days 10 Earthquake accelerated speed value at site Ao = 0.4g considering seismic zone 3 Max. wind velocities at site v = 177 km/h (considering open field, at height 50 m) Prevailing wind direction：South West Snow load： X kN/m2 No Snow 1.4 Raw material Raw material: seashell Granulometry: Physical characters: Bulk density: 1.350t/m3 Humidity: Minus 0.5% Limestone chemical composition: Standard Quality High Quality Component % % CaO 51,7 53,1 SiO2 4.1 3.3 P2O5 0.1 0.1 Fe2O3 0.3 0.1 Al2O3 0.8 0.1 TiO2 0.0 0.0 MgO 0.4 0.1 K2O 0.2 0.1 SrO 0.0 0.0 SO3 0.5 0.1 Cl 0.1 0.0 Na2O 0.4 0.2 PPC 41.2 42.7 CaCO3 92.4 94.8 1.5 Fuel Fuel: Bituminous coal Basic parameter: Typical Coal Analysis Typical Min. Max. ASTM Test Nr. Calorific value (Btu/lb gar) 10600 10400 D5865 Total moisture (wt percent) 14.2 16.8 D3302 Equilibrium moisture (wt percent) 11.2 Moisture addition (wt percent) 3.0 Ash (wt percent) 11.2 14.2 D3174 Volatile matter (wt percent) 31.8 30.5 D3175 Sulfur (wt percent) 0.65 0.85 D4239C Hardgrove index 51 45 D409 Nominal Top Size(mm) 50 D4749 Fines0.5mm (wt percent) 13 19 Carbon (wt percent) 61.2 Hydrogen (wt percent) 4.2 Nitrogen (wt percent) 1.2 Chlorine (wt percent) 0.03 Oxygen (wt percent) 7.32 Mercury (ppm) 0.01 AFT (Centigrade) 2.热平衡 2.1 石灰形成热 A. 生成1kg 石灰干原料消耗量 a) 灰份掺入量 GA=q×Ay×S/(Qy×100)=7900×11.2×100/(10600×1.055×2.2×100) =3.60