摘要
用一定量的NaOH溶液来消化工业级CaO和处理工业用的CaCO3,生成改性吸收剂,并在中高温度段研究它们对HCI的吸收能力。在流化床反应器内实验研究结果表明:(1)在760℃以前改性石灰类吸收剂对HCI的吸收效率随反应温度上升而上升;(2)工业级Ca(OH)2经改性后作为酸性气体HCI的吸收剂,在流化床反应器中具有较高的净化效率(>90%),以流化态运行方式对烟气中的酸性气体实施干式净化,可以达到排放标准。(3)钠碱处理过的 CaCO3吸收效果良好,考虑到实验所用CaCO3的颗粒度,CaCO3有望替代纯Ca(OH)2作为干式吸收剂。(4)一定量的MgO出现在Ca基吸收剂中,会对Ca基吸收剂净化HCI的净化效率有所影响,某些MgO含量会使净化效率下降。
NaOH solution is used to slake industrial CaO and treat industrial CaCOa thus modified absorbents for gaseous HCI have been obtained. Then the sorbents are made to react with HCI at moderate to high temperatures. Results of the experiments on HCI removal with these absorbents in fluidized-bed reactor show that: (1) HCI retention capability of these modified absorbents increase with temperature when the temperature lower than 760癈; (2) with modified Ca(OH)2 as absorbents in fluidized-bed reactor, the HCI ret...
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2002年第S1期229-232,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50006009)