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Guo R.-T.,Shanghai University of Electric Power | Pan W.-G.,Shanghai University of Electric Power | Zhang X.-B.,Shanghai University of Electric Power | Jin Q.,SEC IHI Power Generation Environment Protection Engineering Co. | And 2 more authors.
Energy Sources, Part A: Recovery, Utilization and Environmental Effects | Year: 2014

Magnesium hydrate is the absorbent in magnesia scrubbing wet flue gas desulfurization. Its dissolution rate has a great impact on the performance of SO2 removal. Further, magnesia is the heat decomposition product of magnesite. The effect of magnesite heat decomposition temperature on the dissolution rate of magnesium hydrate is investigated in this study. As can be seen from the experimental results, magnesium hydrate dissolution rate increased with increasing heat decomposition temperature up to 700°C and then decreased with the increase of heat decomposition temperature. This is caused by the change of magnesite heat decomposition mechanism at a different heat decomposition temperature. Copyright © Taylor and Francis Group, LLC. Source


Guo R.-T.,Shanghai University of Electric Power | Pan W.-G.,Shanghai University of Electric Power | Zhang X.-B.,Shanghai University of Electric Power | Ren J.-X.,Shanghai University of Electric Power | And 3 more authors.
Fuel | Year: 2011

Removal of NO was studied in a lab-scale bubbling reactor. Effects of operation parameters such as pH value, H2O2 concentration, NO inlet concentration and reaction temperature on NO removal efficiency were investigated. The operation parameters included 250-1000 ppm NO, 0.5-1.5 mol/L H2O2, FeSO4 0.05 mol/L, 2-6 pH, 25-70 °C. As can be seen from the experimental results, pH value had a great impact on NO removal efficiency. The experimental results indicated that the gas-liquid reaction between NO and Fenton reagent solution was liquid-film controlled as NO inlet concentration exceeded 600 ppm. And NO removal efficiency decreased with increasing reaction temperature. © 2011 Elsevier Ltd. All rights reserved. Source


Pan W.-G.,Shanghai University of Electric Power | Pan W.-G.,Shanghai Power Generation Environment Protection Research Center | Guo R.-T.,Shanghai University of Electric Power | Guo R.-T.,Shanghai Power Generation Environment Protection Research Center | And 8 more authors.
Environmental Progress and Sustainable Energy | Year: 2013

The absorption process of NO into KMnO4/(NH4) 2CO3 solutions was studied in a stirred tank reactor. The experimental results showed that the reaction process was a fast pseudo-m reaction. The reaction between NO and aqueous solutions of KMnO 4/(NH4)2CO3 was found to be first-order with respect to NO and with respect to KMnO4. The frequency factor and the average activation energy of this reaction were 2.3 × 109 m3/(mol s) and 36.77 kJ/mol, respectively. Copyright © 2012 American Institute of Chemical Engineers. Source


Guo R.-T.,Shanghai University of Electric Power | Guo R.-T.,Shanghai Power Generation Environment Protection Research Center | Pan W.-G.,Shanghai University of Electric Power | Pan W.-G.,Shanghai Power Generation Environment Protection Research Center | And 6 more authors.
Korean Journal of Chemical Engineering | Year: 2013

Experiments were performed in a stirred tank reactor to study the absorption kinetics of NO into aqueous solutions of NaClO2/(NH4)2CO3 solutions. The absorption process is a fast pseudo-reaction, and the reaction was found to be second-order with respect to NO and first-order with respect to NaClO2, respectively. The frequency factor and the average activation energy of this reaction were 4. 56×1011 m6/(mol2 s) and 33. 01 kJ/mol respectively. The absorption rate of NO increased with increasing reaction temperature, but decreased with increasing (NH4)2CO3 solution. © 2012 Korean Institute of Chemical Engineers, Seoul, Korea. Source


Xu Y.,Shanghai JiaoTong University | Jin Q.,SEC IHI Power Generation Environment Protection Engineering Co. | Yuan J.,Shanghai JiaoTong University
Proceedings of the 30th Chinese Control Conference, CCC 2011 | Year: 2011

Selective catalytic reduction (SCR) technology is the most common method to reduce NOx emissions from coal-fired power plants. The design and development of SCR facilities is a complicate process involving the optimization of several parameters such as the strategy of ammonia injecting, the geometric design of gate leaf as well as the performance of the SCR monolith catalyst. Among them, the geometric design of gate leaf determines the uniform distributions of the ammonia concentration and the velocity at the entrance of the catalyst layer, which are the key factors to affect the efficiency of flue gas denitrification (DeNOx) system and the catalyst life. In this work, three-dimensional CFD simulations are carried out for the SCR-DeNO x facility of a 300MW coal-fired power plant. The influence of the gate leaves at the turning and at the diameter variable on the distributions of the velocity and the concentration are investigated. The results of the optimal design of the gate leaves are shown as well. © 2011 Chinese Assoc of Automati. Source

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