公开(公告)号：US06482379B1

公开(公告)日：2002-11-19

申请号：US09704894

申请日：2000-11-02

申请人： Tomio Sugimoto ,  Masumi Itaya ,  Yoshinao Hirano ,  Hiroaki Harada ,  Hachiro Hirano ,  Sigeru Sakurai ,  Makoto Yoshida ,  Masaharu Tanaka

发明人： Tomio Sugimoto ,  Masumi Itaya ,  Yoshinao Hirano ,  Hiroaki Harada ,  Hachiro Hirano ,  Sigeru Sakurai ,  Makoto Yoshida ,  Masaharu Tanaka

IPC分类号： C01D742

CPC分类号： F23J15/02 ,  B01D53/685 ,  B01D2257/2045 ,  F23G2201/304 ,  F23G2202/104 ,  F23J15/003 ,  F23J2215/30 ,  F23J2215/301 ,  F23J2215/60

摘要： A sodium-based dechlorinating agent g is added to a flue gas G6; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water i; water-insoluble constituents k are separated from the resulting aqueous solution j; and after adjusting pH of the aqueous solution 1 remaining after separation of the water-insoluble constituents k, mercury, dioxin and the like are removed and discharged. The sodium-based dechlorinating agent g is mixed with a hydrophilic anti-caking agent, with an angle of repose of 40° or more, a dispersibility of less than 50, and a floodability index value of less than 90. A mean particle diameter of sodium hydrogencarbonate is set within a range of from 2 &mgr;m to 30 &mgr;m. The hydrophilic anti-caking agent comprises silica, and is contained in an amount of 0.1 mass % or more in the sodium-based dechlorinating agent. Further, a mean particle diameter of the hydrophilic anti-caking agent is set within a range of from 0.001 &mgr;m to 1 &mgr;m. This permits inhibition of occurrence of a pressure drop and leakage in the filter cloth of the dust collector.

摘要翻译： 向烟道气G6中加入钠系脱氯剂g; 该烟道气中所含的氯化氢作为脱氯残渣除去; 通过加入水i使脱除的脱氯残渣溶解; 从所得水溶液j中分离水不溶性成分k; 并且在分离出水不溶性组分k之后调节剩余的水溶液1的pH后，除去汞，二恶英等并排出。 将钠基脱氯剂g与亲水性防结块剂以休止角为40°以上，分散性小于50°，防涝指数值小于90的方式混合。平均粒径为 碳酸氢钠的含量设定在2〜30μm的范围内。 亲水性防结块剂包含二氧化硅，钠基脱氯剂中的亲水性防结块剂的含量为0.1质量％以上。 此外，亲水性防结块剂的平均粒径设定在0.001μm〜1μm的范围内。 这允许抑制压降的发生和集尘器的滤布中的泄漏。