催化裂化烟气脱硫、脱氮吸附剂的初步研究

 在微型连续床式反应装置上，考察了催化裂化催化剂吸附烟气中 SO₂、NO_x的性能。当SO₂、NO_x的体积分数分别为1800和1900 μL/L、反应温度为220℃、微正压操作时，新鲜吸附剂90%的SO₂脱除率维持在140~200s，70%的NO_x脱除率维持在220~470s；吸附容量为11.4~16.2 mg/g。SO₂、NO_x与吸附剂以物理吸附和化学吸附方式相作用；吸附运转剂表面的S和N分别以SO^2-₄和 NO^-₃存在。

Primary Investigations of Adsorbents for Removal of Sulfur Oxides and Nitrogen Oxides From Catalytic Cracking Flue Gas

Performances of SO₂ and NO_x removal over catalytic cracking catalysts were investigated in a micro continuous bed device. Removal rate of more than 90% to SO₂ over fresh adsorbents was retained for 140 to 200s, and that of more than 70% to NO_x for 220 to 470 s under the conditions of φ(SO₂)= 1800 μL/L, φ(NO_x)=1900 μL/L, 200℃, and light positive pressure. The adsorption capability to SO₂ was in the range of 11.4-16.2 mg/g. SO₂ and NO_x interacted with adsorbents in physical and chemical adsorptions. The S and N in the surface of run adsorbents existed in the form of SO^2-₄ and NO^-₃, respectively.