New Wet Flue Gas Desulfurization Process Using Granular Limestone and Organic Acid Additives

2006 ◽  
Vol 4 (1) ◽  
Author(s):  
Shengyu Liu ◽  
Wende Xiao
Keyword(s):  
Acetic Acid ◽  
Sulfur Dioxide ◽  
Organic Acid ◽  
Removal Efficiency ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
So2 Removal ◽  
New Process ◽  
Desulfurization Process ◽  
Sulfur Dioxide Removal

A new wet FGD process in which sulfur dioxide was absorbed in the bubble reactor using granular limestone simultaneously adding acetic acid had been proposed. The main difference compared to conventional wet FGD process was the ability of the new process to utilize granular limestone directly as a desulphurization reagent simultaneously adding acetic acid. Thus, the pulverizing of limestone, which causes power consumption, can be saved. Only using granular limestone directly as absorbent without acetic acid, SO2 removal efficiency and limestone utilization were too low. Adding some concentration of acetic acid, the performance of the new wet FGD process was confirmed to be equal to or higher than that of a conventional process in various tests. Various parameters of the new FGD process which would affect the sulfur dioxide removal efficiency and limestone utilization were studied.

The effect of hydrogen peroxide solution on SO2 removal in the semidry flue gas desulfurization process

2009 ◽  
Vol 170 (1) ◽  
pp. 436-442 ◽  
Author(s):  
Yuegui Zhou ◽  
Xian Zhu ◽  
Jun Peng ◽  
Yaobin Liu ◽  
Dingwang Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Flue Gas ◽  
Hydrogen Peroxide Solution ◽  
Flue Gas Desulfurization ◽  
So2 Removal ◽  
Desulfurization Process

The development of a genetic method to optimize the flue gas desulfurization process

2021 ◽  
Vol 26 (jai2021.26(1)) ◽  
pp. 59-73
Author(s):  
Fedorchenko I ◽  
◽  
Oliinyk A ◽  
Stepanenko A ◽  
Fedoronchak T ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Flue Gas ◽  
Power Plants ◽  
Electric Energy ◽  
Flue Gas Desulfurization ◽  
Adaptive Mutation ◽  
So2 Emissions ◽  
Genetic Method ◽  
Desulfurization Process ◽  
Using Data

Sulfur dioxide is one of the most commonly found gases, which contaminates the air, damages human health and the environment. To decrease the damage, it is important to control the emissions on power stations, as the major part of sulfur dioxide in atmosphere is produced during electric energy generation on power plants. The present work describes flue gas desulfurization process optimizing strategy using data mining. The optimisation modified genetic method of flue gas desulfurization process based on artificial neural network was developed. It affords to represent the time series characteristics and factual efficiency influence on desulfurization and increase its precision of prediction. The vital difference between this developed genetic method and other similar methods is in using adaptive mutation, that uses the level of population development in working process. It means that less important genes will mutate in chromosome more probable than high suitability genes. It increases accuracy and their role in searching. The comparison exercise of developed method and other methods was done with the result that new method gives the smallest predictive error (in the amount of released SO2) and helps to decrease the time in prediction of efficiency of flue gas desulfurization. The results afford to use this method to increase efficiency in flue gas desulfurization process and to decrease SO2 emissions into the atmosphere

Simultaneous magnesia regeneration and sulfur dioxide generation in magnesium-based flue gas desulfurization process

2021 ◽  
Vol 284 ◽  
pp. 124720
Author(s):  
Hongjing Tian ◽  
Donghai Wan ◽  
Yixing Che ◽  
Jing Chang ◽  
Jun Zhao ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
Desulfurization Process

Study on the Limestone-Gypsum Sintering Flue Gas Desulphurization Technology in Iron and Steel Plant

2014 ◽  
Vol 997 ◽  
pp. 624-627
Author(s):  
Zhao Hui Zhang ◽  
Han Long Jiang ◽  
Bai Long Liu ◽  
Wei Ji
Keyword(s):  
Sulfur Dioxide ◽  
Flue Gas ◽  
Steel Industry ◽  
Flue Gas Desulfurization ◽  
Great Contribution ◽  
Desulfurization Rate ◽  
Iron And Steel ◽  
Sulfur Dioxide Emissions ◽  
Desulfurization Process ◽  
Further Development

To date, limestone-gypsum has been the most widely used sintering flue gas desulfurization technology in China's steel industry. In order to demonstrate the application status, this paper stated the current desulfurization situation of Baosteel, Meishan Steel, Xiangtan Steel, Zhang steel. Process of limestone-gypsum obtained in these steel companies is playing an increasingly important role in sintering flue gas desulfurization, and a majority of these plants get a high desulfurization rate at more than 90%, which makes great contribution to the work of sulfur dioxide emissions. Besides, some problems of the desulfurization process in these plants are discussed and solutions are put forward to promote further development of the technology. For the prospects of the technology, it has been an inevitable trend to develop integration technology of desulfurization, denitrification and dioxin removal to meet requirements for energy saving work during the Twelfth Five-Year Plan. All these above presented in the paper will provide a basis in reality for the further development of this technology.

scholarly journals Desulfurization performance of biotrickling filter on the removal of flue gas adsorbent produced by dual-alkali flue gas desulfurization process

2014 ◽  
Vol 5 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Tianlong Zheng ◽  
Li Wang ◽  
Jianhua Wang ◽  
Niantao Xue ◽  
Qunhui Wang
Keyword(s):  
Removal Efficiency ◽  
Flue Gas ◽  
Impact Resistance ◽  
Biotrickling Filter ◽  
Flue Gas Desulfurization ◽  
Sulfate Reducing ◽  
Initial Ph ◽  
Restoration Time ◽  
Desulfurization Process ◽  
Adsorbent Treatment

A biotrickling filter (BTF) was used to investigate the elimination of flue gas adsorbent containing sulfite, sulfate, and hydrosulfate; it was undertaken to replace the regeneration step of dual-alkali flue gas desulfurization. Sulfate-reducing bacteria (SRB) isolated from landfill leachate were inoculated, and overall desulfurization performance as well as impact resistance was evaluated. The results showed that an efficient SRB could reduce the start-up time to 1 h, which is one third of that required for initial condition, for a sulfite removal efficiency above 80%. Further, the sulfite removal efficiency rose to 98% in 3.9 h with the lower packing load of 5.56 kg SO32−-S/(m3d), and in 6.4 h for 6.37 kg SO32−-S/(m3d). In contrast, 85% removal efficiency in 5 h for sulfate and 98% removal efficiency in 0.5 h for hydrosulfite were obtained when the packing loads were 0.95 kg SO42−-S/(m3d) and 1.76 kg HSO3−-S/(m3 d), respectively. Moreover, the BTF could quickly restore after impact shock, such as, 0.5 h restoration time for initial pH which varied from 4.5 to 6.5, 6 d for 27 d shutdown behavior, and 4 d for 5 h high temperature shock of 85 °C. Therefore, the BTF system was an effective method for flue gas adsorbent treatment.

Prediction of SO2 removal efficiency for wet Flue Gas Desulfurization

2009 ◽  
Vol 50 (10) ◽  
pp. 2547-2553 ◽  
Author(s):  
Binlin Dou ◽  
Weiguo Pan ◽  
Qiang Jin ◽  
Wenhuan Wang ◽  
Yu Li
Keyword(s):  
Removal Efficiency ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
So2 Removal
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