新型整体式钒催化剂的设计、制备与研究

设计了一种新型整体式SO₂转化钒催化剂，催化剂内部设计了若干平行排列的交错的规则气流通道.研究结果表明，与传统散堆条形催化剂相比，流动阻力降低2/3左右.用于整体式钒催化剂成型的料浆经过特殊的处理，可以使催化材料机械强度提高近10倍.应力分布计算表明，整体式钒催化剂在孔道边角部分存在应力集中的问题，最大应力比所施压力高出8～8.5倍.通过优化处理后的新型整体式钒催化剂，具有与商业催化剂相当的催化活性，抗压机械强度约为1.10 MPa.

A new structured vanadium catalyst:design,manufacture and measurement

A new structured vanadium catalyst(SVC) with inner intercrossed and regularly lined gas flow channels was designed and manufactured.The pressure-drop of the new catalyst was 2/3 lower than a commercial extruded vanadium catalyst.The slurry for the mould shaping during the manufacture of the new structured catalyst was specially processed.It increased the mechanical strength of the catalyst by 10 times.Stress distribution calculation showed that stress concentration existed in the channel corners.The maximum stress was 8—8.5 fold higher than the press force.The structured catalyst manufactured in optimal condition possessed comparable activity with the commercial catalyst and mechanical strength of 1.1 MPa.