scholarly journals Examination of the influence of macro and microscopic parameters of limestone on the effectiveness of gas phase desulphurisation according to the method of wet limestone

2018 ◽  
Vol 44 ◽  
pp. 00152
Author(s):  
Elżbieta Romanik
Keyword(s):  
Grain Size ◽  
Chemical Composition ◽  
Gas Phase ◽  
Flue Gas ◽  
Ph Value ◽  
Global Scale ◽  
Flue Gas Desulfurization ◽  
Correlation Dependence ◽  
Purchase Cost ◽  
Desulfurization Process

The essence of the research was to develop a correlation dependence between the degree of limestone grinding and the efficiency of boiler flue gas desulfurization. The design of the Installation of Flue Gas Desulfurization (FGD) in the slurry of ground limestone begins with the assumption (based on literature data or experience gained from previously completed and operated installations) of a certain pH value of this slurry in the reactor tank. The reagent is not yet indicated, its extraction location, its chemical composition, grain size and reactivity are not determined. Application practice and economics of these processes have shown that calcium reagents are the most advantageous in application because of the general availability of limestone, its large mining resources, existing infrastructure for its extraction, the network of suppliers and the purchase cost acceptable by the recipients. On a global scale, more than 90% of the flue gas desulfurization plant is treated with limestone [1]. The effectiveness of the desulfurization process is high, and some believe that the decisive influence is on the degree of limestone fragmentation dissolution rate of CaCO3 in the absorption slurry, its reactivity to absorbed SO2, the pH of the absorption slurry.

Study of Dual-Alkali on Sintering Flue Gas Desulfurization

2011 ◽  
Vol 393-395 ◽  
pp. 304-307
Author(s):  
Yu Zhu Zhang ◽  
Ying Xu
Keyword(s):  
Flue Gas ◽  
Gas Flow ◽  
Ph Value ◽  
Surface Active Agent ◽  
Active Agent ◽  
Development Trend ◽  
Flue Gas Desulfurization ◽  
Before And After ◽  
Selection Principles ◽  
Desulfurization Process

Combining with the characteristics and control methods of sintering flue gas, several common methods for flue gas desulfurization(FGD) and development trend of desulfurization technology were described in this paper. According to characteristics of sintering flue gas and selection principles, dual-alkali method was used in the FGD. Desulfurization process, basic principle and characteristics of the process were studied in detail. By contrast test, the effect of concentration of the desulfurization, flue gas flow and surface active agent on the desulfurization efficiency was investigated in detail through calculating the pH value of the solution before and after desulfurization reaction.

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.

Modelling Flue Gas Desulfurization Using Pyrolusite Pulp in a Jet Bubbling Reactor

2009 ◽  
Vol 610-613 ◽  
pp. 85-96 ◽  
Author(s):  
Jing Dong Zhao ◽  
Shi Jun Su ◽  
Nan Shan Ai ◽  
Xiao Fan Zhu
Keyword(s):  
Flue Gas ◽  
Ph Value ◽  
Scale Up ◽  
Absorption Efficiency ◽  
Flue Gas Desulfurization ◽  
Process Conditions ◽  
Gas Temperature ◽  
Transfer Coefficients ◽  
Set Up ◽  
So2 Absorption

A mathematical model for flue gas desulfurization using pyrolusite pulp in jet bubbling reactor (JBR) was described. Firstly, based on the concept of two stages mass balance with chemical reaction, two models were set up, for jet bubbling zone and rising bubble zone, respectively, according to the construction of JBR. The models consist of two coupling differential equations and were solved simultaneously by integral and separation of the variables. Then the SO2 absorption efficiency expression was developed, considering the great discrepancy existing between the gas-side mass transfer coefficients of the jet bubbling zone and gas bubble rising zone. The final expression associates SO2 absorption efficiency with process conditions and JBR structure parameters, which can give some instruction and guidance for the study of reactor operation process. Predicted results from the theoretical model, including effect of pH value of the pulp, flue gas temperature and inlet SO2 concentration of flue gas on SO2 absorption efficiency, were found to be in good agreement with experimental data obtained in a jet bubbling reactor. The model provides a basis for the process scale up and operating guide.

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

Experimental Study on Desulfurization Enhanced by Additive in Limestone-Gypsum FGD Process

2014 ◽  
Vol 675-677 ◽  
pp. 422-425
Author(s):  
Jun Xia Liu
Keyword(s):  
Flue Gas ◽  
Gas Flow ◽  
High Efficiency ◽  
Ph Value ◽  
Flue Gas Desulfurization ◽  
Gas Flow Rate ◽  
Lime Solution ◽  
Desulfurization Efficiency ◽  
Technical Features ◽  
Hexanedioic Acid

This Paper introduced the research background and technical features of the simulative experiments in the laboratory with the sorbent of lime solution without lime particles. By means of the effects of various influencing factors on SO2 removal efficiency were studied carefully. These parameters include gas flow rate (G), inlet SO2 concentration, liquid-to-gas ratios, the height of the packing and the additive, at the same time menstruating the pH value of the liquid flowing from the tower. To improve desulfurization efficiency of limestone in the wet flue gas desulfurization (WFGD), effect of the hexanedioic acid additive on limestone desulfurization agent were studied. The result shows that this system has advantages of high efficiency, stable, low investment and low circulating cost. The result could give a reference to optimization and will be helpful in selecting desulfurization techniques.

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