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.

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.

scholarly journals Investigation of the emission control of sulfur trioxide aerosols based on heterogeneous condensation and the deflectors tray of the desulfurization tower

RSC Advances ◽  
2020 ◽  
Vol 10 (63) ◽  
pp. 38515-38523
Author(s):  
Rui Zhang ◽  
Xiaodong Si ◽  
Lingling Zhao ◽  
Linjun Yang ◽  
Hao Wu
Keyword(s):  
Flue Gas ◽  
Sulfur Trioxide ◽  
Emission Control ◽  
Flue Gas Desulfurization ◽  
Heterogeneous Condensation ◽  
Desulfurization Process

In this paper, control over the emission of sulfur trioxide aerosols was investigated based on heterogeneous condensation in the wet flue gas desulfurization process.

Experiment Research on Calcium Hypochlorite for Flue Gas Desulfurization and Denitration

2012 ◽  
Vol 518-523 ◽  
pp. 2509-2513 ◽  
Author(s):  
Hai Long Liu ◽  
Yan Liu ◽  
Jin Gang Wang ◽  
Shao Feng Zhang
Keyword(s):  
Removal Efficiency ◽  
Flue Gas ◽  
Industrial Application ◽  
Flue Gas Desulfurization ◽  
Experiment Research ◽  
Calcium Hypochlorite

In this paper the desulfurization and denitration of simulation flue gas using calcium hypochlorite as absorbent was studied experimentally. Absorption experiments of the desulfurization and denitration in calcium hypochlorite solutions were carried out in a Porous Globular Gas Liquid Reactor (PGGLR) which was a new and innovative core design. Three experiments were conducted at NTP conditions. The mechanism of removal for SO2 and NOX was investigated. Under these experiment conditions, the removal efficiency of 100%, 67% for SO2 and NOX were achieved. The results can offer valuable references for industrial application.

Factors Affecting Slurry Oxidation in a Wet Flue Gas Desulfurization Process

2019 ◽  
Vol 145 (10) ◽  
pp. 04019058
Author(s):  
Shuangchen Ma ◽  
Fang Xu ◽  
Dongsheng Xu ◽  
Defeng Li ◽  
Yanfei Yu
Keyword(s):  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
Factors Affecting ◽  
Desulfurization Process

Performance of sulfite/FeIIIEDTA fuel cell: Power from waste in flue gas desulfurization process

2019 ◽  
Vol 375 ◽  
pp. 122008 ◽  
Author(s):  
Seonjeong Cheon ◽  
Kwiyong Kim ◽  
Hyung Chul Yoon ◽  
Jong-In Han
Keyword(s):  
Fuel Cell ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
Desulfurization Process

scholarly journals Simultaneous Biological and Chemical Removal of Sulfate and Fe(II)EDTA-NO in Anaerobic Conditions and Regulation of Sulfate Reduction Products

Minerals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 330 ◽  
Author(s):  
Yu Zhang ◽  
Lijian Sun ◽  
Jiti Zhou
Keyword(s):  
Sulfate Reduction ◽  
Flue Gas ◽  
Elemental Sulfur ◽  
Biofilm Reactor ◽  
Flue Gas Desulfurization ◽  
Moving Bed Biofilm Reactor ◽  
Anaerobic Conditions ◽  
Biological Reduction ◽  
Sulfate Reducing ◽  
Reducing Bacteria

In the simultaneous flue gas desulfurization and denitrification by biological combined with chelating absorption technology, SO2 and NO are converted into sulfate and Fe(II)EDTA-NO which need to be reduced in biological reactor. Increasing the removal loads of sulfate and Fe(II)EDTA-NO and converting sulfate to elemental sulfur will benefit the application of this process. A moving-bed biofilm reactor was adopted for sulfate and Fe(II)EDTA-NO biological reduction. The removal efficiencies of the sulfate and Fe(II)EDTA-NO were 96% and 92% with the influent loads of 2.88 kg SO42−·m−3·d−1 and 0.48 kg NO·m−3·d−1. The sulfide produced by sulfate reduction could be reduced by increasing the concentrations of Fe(II)EDTA-NO and Fe(III)EDTA. The main reduction products of sulfate and Fe(II)EDTA-NO were elemental sulfur and N2. It was found that the dominant strain of sulfate reducing bacteria in the system was Desulfomicrobium. Pseudomonas, Sulfurovum and Arcobacter were involved in the reduction of Fe(II)EDTA-NO.

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