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首页> 外文会议>2nd international conference on energy sustainability 2008 >STUDY ON THE EXPERIMENTS OF FLUE GAS DENITRIFICATION AND DESULFURIZATION USING NITRIC ACID SOLUTION
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STUDY ON THE EXPERIMENTS OF FLUE GAS DENITRIFICATION AND DESULFURIZATION USING NITRIC ACID SOLUTION

机译：硝酸溶液对烟气脱硫脱硫的实验研究

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The present study attempts to take nitric acid as absorbent to clean up SO_2 and NO gases simultaneously from the simulated flue gas in the lab-scale bubbling reactor, this study was divide into the individual DeNOx experiments and the combined DeSOx/DeNOx experiments: the individual DeNOx experiments were carried out to examine the effect of various operating parameters such as input NO concentration, nitric acid concentration, oxygen concentration, input SO_2 concentration, adding KMnO_4 as additive and taking NaOH as the secondary absorption processes on the SO_2 and NOx removal efficiencies at room temperature, the results of the individual DeNOx show that NO removal efficiency of 70%-95% were achieved under optimized conditions. NO removal efficiency increased with the increasing nitric acid concentration and increased by adding KMnO_4 into the absorbent as additive as well. The removal efficiency of NO can reach 95% when using the two-step integrated processes of (HNO_3+ KMnO_4)-NaOH, the absorption solution of 50% nitric acid, 400ppm of input NO concentration. 0.5% oxygen concentration and without SO_2 in the simulated flue gas. No improvement on the NO_x removal efficiency was observed with the increasing of KMnO_4 and NaOH concentration in the scrubbing solution.rnThe results of the combined DeSOx/DeNOx experiments show that the maximum DeNOx andrnDeSOx efficiencies ranged from 36.6% to 81% andrnfrom 99.4% to 100.0%, respectively. The primernparameters affecting the NOx removal efficiency arernthe oxygen concentration and the input SO_2rnconcentration.
机译：本研究试图以硝酸为吸收剂，同时在实验室规模的鼓泡反应器中从模拟烟道气中清除SO_2和NO气体，该研究分为单独的DeNOx实验和联合的DeSOx / DeNOx实验：进行了DeNOx实验，以考察输入NO浓度，硝酸浓度，氧气浓度，输入SO_2浓度，添加KMnO_4作为添加剂以及以NaOH作为二次吸收过程对SO_2和NOx去除效率等各种操作参数的影响。在室温下，单个脱硝的结果表明，在最佳条件下，脱氮效率达到70％-95％。 NO去除效率随着硝酸浓度的增加而增加，并且通过向吸收剂中添加KMnO_4作为添加剂而增加。当使用（HNO_3 + KMnO_4）-NaOH两步集成工艺，50％硝酸的吸收溶液，输入NO浓度为400ppm时，NO的去除效率可以达到95％。模拟烟气中的氧气浓度为0.5％，不含SO_2。随着洗涤溶液中KMnO_4和NaOH浓度的增加，NO_x去除效率没有提高。rnDeSOx/ DeNOx组合实验的结果表明，最大的DeNOx和rnDeSOx效率在36.6％至81％之间，从99.4％至100.0之间。 ％， 分别。影响NOx去除效率的引物参数是氧气浓度和输入的SO_2浓度。

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