公开(公告)号：KR1020020053796A

公开(公告)日：2002-07-05

申请号：KR1020020032679

申请日：2002-06-11

Applicant: 부경대학교 산학협력단

Inventor： 우희철 ,  정석조 ,  정종국 ,  천재기 ,  이석희 ,  박대원 ,  정종식

IPC: B01J23/847

CPC classification number: B01J23/8474 ,  B01D53/8609

Abstract: PURPOSE: A catalyst for selective catalytic reduction of sulfur dioxide to sulfur in high space velocity by direct reduction is provided, and also a method for eliminating sulfur dioxide using the same is provided. CONSTITUTION: In the catalyst for selective catalytic reduction of sulfur dioxide to sulfur by the reaction of exhaust gas containing sulfur dioxide with reductive gases, the present invention is characterized in that an oxide composite comprising Nb and Fe is impregnated on a porous zirconia and/or titania support in an amount of not less than 3 wt.%, based on the weight of porous support. In the oxide composite, the molecular ratio of Fe to Nb is in the range of 0.1 to 0.9. This catalyst is suitable to the treatment of exhaust gas containing 0.1-10 vol.% of sulfur dioxide, and its selective catalytic reduction is optimized under conditions of a space velocity of 3,000 to 100,000h¬-1 and a temperature range of 350 to 600 deg.C.

Abstract translation: 目的：提供通过直接还原以高空间速度将二氧化硫选择性催化还原为硫的催化剂，并且还提供了使用其来消除二氧化硫的方法。 构成：本发明的特征在于，将含有二氧化硫的废气与还原性气体反应，将二氧化硫选择性催化还原为硫的催化剂，其特征在于，将包含Nb和Fe的氧化物复合物浸渍在多孔氧化锆和/或 二氧化钛载体的量不少于3重量％，基于多孔载体的重量。 在氧化物复合体中，Fe与Nb的分子比在0.1〜0.9的范围内。 该催化剂适用于处理含有0.1-10体积％二氧化硫的废气，其选择性催化还原在3000至100,000h -1的空间速度和350至600℃的温度范围内优化 摄氏度