Recycling nickel from spent catalyst of Phu My fertilizer plant as a precursor for exhaust gas treatment catalysts preparation

Le-Phuc, Nguyen; Luong, Thuy Ngoc; Tran, Tri Van; Pham, Yen Thi Hai; Ngo, Phuong Thuy; Nguyen, Sura

doi:10.1007/s10163-017-0609-1

Cited by 5 publications

(1 citation statement)

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“…The metal oxide catalyst is unstable and has low catalytic activity under high temperature condition; In addition, the SO 2 and other substances present in the flue gas can reduce its activity or service life. The catalytic activity of the noble metal catalyst is higher than other catalysts in the catalytic reduction process, however, the consumption of the noble metal catalyst as the reducing agent is large, the operation cost is high, and sulfur poisoning and oxygen suppression are easy to occur in the selective catalytic oxidation process [ 10 ]; The activity of molecular sieve catalyst is high in the high temperature area, and the temperature range of high activity is wide, but the problems of water inhibition, sulfur poisoning and low temperature can limit its industrial application [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the NO removal efficiency of the lignite pyrolysis coke catalyst by selective catalytic oxidation method

Zhang

Xiangling

et al. 2017

PLoS ONE

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Selective catalytic oxidation (SCO) method is commonly used in wet denitration technology; NO after the catalytic oxidation can be removed with SO2 together by wet method. Among the SCO denitration catalysts, pyrolysis coke is favored by the advantages of low cost and high catalytic activity. In this paper, SCO method combined with pyrolysis coke catalyst was used to remove NO from flue gas. The effects of different SCO operating conditions and different pyrolysis coke catalyst made under different process conditions were studied. Besides, the specific surface area of the catalyst and functional groups were analyzed with surface area analyzer and Beohm titration. The results are: (1) The optimum operating conditions of SCO is as follows: the reaction temperature is 150°C and the oxygen content is 6%. (2) The optimum pyrolysis coke catalyst preparation processes are as follows: the pyrolysis final temperature is 750°C, and the heating rate is 44°C / min. (3) The characterization analysis can be obtained: In the denitration reaction, the basic functional groups and the phenolic hydroxyl groups of the catalyst play a major role while the specific surface area not.

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Section: Introductionmentioning

confidence: 99%