首页>
外国专利>
SEED CRYSTAL SLURRY SUPPLY METHOD IN WASTE GAS DESULFURIZATION APPARATUS ACCORDING TO WET LIME GYPSUM PROCESS
SEED CRYSTAL SLURRY SUPPLY METHOD IN WASTE GAS DESULFURIZATION APPARATUS ACCORDING TO WET LIME GYPSUM PROCESS
展开▼
机译:湿法石灰石膏制浆烟气脱硫装置中的种子结晶浆供应方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE:To prevent the scale adhesion in a washing apparatus, by measuring the flow amount of exhaust gas, the inlet SO2-concn. of a washing apparatus, the O2-concn. in effluent gas from an oxidation apparatus, the flow amount of a washing liquid to the oxidation apparatus and the flow amount of a seed crystal slurry while manipulating the flow amount of the seed crystal slurry by the operation result of the measured values. CONSTITUTION:The gas flow amount G and the SO2-concn. ySO2 measured by the flow meter 24 and the desitometer 30 of an exhaust gas inlet duct 1 are multiplied and the obtained value is amplified K2-times by an amplifier 25. The signal of the O2-concn. in effluent gas from an oxidation apparatus 5 measured by an O2-densitometer 21 is inputted to a function generator 22. The flow amount F of a washing liquid withdrawn to the oxidation apparatus 5 from a washing apparatus 3 and the flow amount F' of a seed crystal slurry supplied to the washing apparatus 3 from the oxidation apparatus 5 are measured by flow meters 27, 32 and the measured values are inputted to a subtractor A33. Operation shown by formula is performed and the flow amount of the seed crystal slurry in an arranged pipe 6 is manipulated by a regulator 29 so that a CaSO4- concn. is constant and adjusted to a predetermined amount or more.
展开▼