Wet Scrubbing of Sulfur Oxides from Flue Gases

1974 ◽  
pp. 135-151
Author(s):  
M. R. GOGINENI ◽  
W. C. TAYLOR ◽  
A. L. PLUMLEY ◽  
JAMES JONAKIN
Keyword(s):  
Flue Gases ◽  
Sulfur Oxides ◽  
Wet Scrubbing

scholarly journals Additives to Coal-Based Fuel Pellets for the Intensification of Combustion and Reduction in Anthropogenic Gas Emissions

2020 ◽  
Vol 10 (19) ◽  
pp. 6689
Author(s):  
Dmitriy Klepikov ◽  
Tereza Kudelova ◽  
Kristina Paushkina ◽  
Pavel Strizhak
Keyword(s):  
Coal Dust ◽  
Polymer Particle ◽  
Porous Polymer ◽  
Flue Gases ◽  
Sulfur Oxides ◽  
Fuel Composition ◽  
Material Particle ◽  
Wood Sawdust ◽  
Fuel Pellets ◽  
Ignition And Combustion

Cylinder-shaped fuel pellets that were 3 mm in diameter and 3 mm in height, with a mass of 20 mg, were produced by compressing dry coal processing waste under the pressure of 5 MPa. The first group of pellets from coal dust with a particle size less than 140 µm did not contain any additives. The pellets of the second group of fuel compositions contained an oil-impregnated porous polymer material particle with a size of 0.5 mm in the central part of the experimental sample. The particle was surrounded by coal dust from all sides. The ratio of components was 90:10% for coal dust: polymer particle. The latter value almost completely corresponds to the fraction of oil in the fuel composition, since the mass of a porous polymer material particle is negligible. The third group of compositions was a 70:30% mixture of coal dust with wood sawdust with a particle size less than 45 µm, or 45–100, 100–200 and 200–500 µm. The ignition and combustion of single fuel pellets were studied under radiant heating in an air medium while varying the temperature from 800 to 1000 °C. The processes during the fuel combustion were recorded by a high-speed video camera, and the concentrations of the main anthropogenic emissions in flue gases were measured by a gas analyzer. The main characteristics were established—ignition delay times (2–8 s) and duration of burnout (40–90 s)—at different heating temperatures. A difference was established in the combustion mechanisms of the pellets, when adding various components to the fuel mixture composition. This has a direct influence on the induction period duration and combustion time, other conditions being equal, as well as on the concentration of nitrogen and sulfur oxides in the flue gases. Adding an oil-impregnated porous polymer particle to the fuel composition intensifies ignition and combustion, since the times of ignition delay and complete burnout of fuel pellets under threshold conditions decrease by 70%, whereas adding wood sawdust reduces the content of nitrogen and sulfur oxides in the flue gases by 30% and 25%, respectively.

scholarly journals Improvement of environmental indicators of coal energy and agricultural production due to the integration and diversification of these industries

2020 ◽  
Vol 217 ◽  
pp. 04008
Author(s):  
Ekaterina Trushkova ◽  
Elena Omelchenko ◽  
Mikhail Sidelnikov
Keyword(s):  
Sulfuric Acid ◽  
Agricultural Production ◽  
Environmental Safety ◽  
Environmental Indicators ◽  
Flue Gases ◽  
Raw Material ◽  
Sulfur Oxides ◽  
Salt Composition ◽  
Extensive Experience ◽  
Zone Of Influence

At present, there is extensive experience in the use of sulfuric acid ameliorant for soils with soda type of salinity. The authors found that as a result of using a weak solution of sulfuric acid on soils containing sodium and hydrocarbonates in their salt composition, their agrochemical characteristics are significantly improved. The article presents the results that show that the production of fertilizers and ameliorants from the waste of energy enterprises will increase their environmental safety. The use of sulfur oxides captured from the flue gases of coal-fired energy enterprises as a raw material for the production of sulfuric ameliorant will allow solving a double task: to reduce pollution of the zone of influence of enterprises and improve the condition of lands with soda salinization.

Applications of Electron Beam to Environmental Conservation

2019 ◽  
Vol 9 (3) ◽  
pp. 38-41
Author(s):  
Koichi Hirota
Keyword(s):  
Electron Beam ◽  
Electron Accelerator ◽  
Environmental Conservation ◽  
Flue Gases ◽  
Sulfur Oxides ◽  
Gaseous Pollutants ◽  
Waste Incinerator ◽  
Municipal Solid Waste Incinerator ◽  
Inorganic Oxides ◽  
Solid Waste Incinerator

The treatment of electron beam was tested for gaseous pollutants of volatile organiccompounds (VOCs), dioxin, and inorganic oxides (NOX and SOX). The representative VOCs of xylene and toluene were oxidized completely with electron beams using prototype hybrid system equipped with electron accelerator and MnO2 catalysts. More than 90% of dioxin in municipal solid waste incinerator gases was decomposed at a dose of 14 kGy. Nitrogen oxides and sulfur oxides in coal-fired flue gases were recovered as a fertilizer by the addition of NH3 under electron-beam irradiation.Electron beam is expected to be a promising method for treating gaseous pollutants.

scholarly journals Environmental and Economic Efficiency of Comprehensive Technology of Sulfur Oxides, Nitrogen Oxides and Mercury Removal from Flue Gases

2017 ◽  
Vol 15 ◽  
pp. 02001 ◽  
Author(s):  
Svetlana Grigashkina ◽  
Tatyana Galanina ◽  
Vladimir Mikhailov ◽  
Tatyana Koroleva ◽  
Evgeniya Trush
Keyword(s):  
Nitrogen Oxides ◽  
Economic Efficiency ◽  
Flue Gases ◽  
Mercury Removal ◽  
Sulfur Oxides

scholarly journals Researches on sampling method and comparison of several analytical methods for determination of sulfur oxides in flue gases

1965 ◽  
Vol 14 (11) ◽  
pp. 1013-1018 ◽  
Author(s):  
Saburo KANNO ◽  
Syozo FUKUI ◽  
Syoji NAITO ◽  
Mikihiro KANEKO ◽  
Hiroshi MIYAZAKI ◽  
...  
Keyword(s):  
Analytical Methods ◽  
Sampling Method ◽  
Flue Gases ◽  
Sulfur Oxides

scholarly journals Universal Installation for the integrated utilization of flue gases and wastewater from thermal power plants

2020 ◽  
Vol 178 ◽  
pp. 01062
Author(s):  
Sergey A. Glazyrin ◽  
Mikhail G. Zhumagulov ◽  
Zhanar A. Aydimbaeva ◽  
Abay M. Dostiyarov
Keyword(s):  
Carbon Dioxide ◽  
Power Plants ◽  
Thermal Power ◽  
Flue Gases ◽  
Solid Fuels ◽  
Sulfur Oxides ◽  
Thermal Power Plants ◽  
Cation Exchangers ◽  
Industrial Boilers ◽  
Integrated Utilization

For 30 years research has been carried out on the use of wastewater from thermal power plants and industrial boilers, as well as on the use and extraction of various components from flue gases such as carbon dioxide, sulfur and nitrogen. Technological solutions were developed and implemented in various productions at various times: use of acid-forming components of flue gases for the regeneration of cation exchangers; carbon dioxide from flue gases of 99.9% purity with “food” quality; technical nitrogen of 95-99 purity from flue gases; wastewater usage to increase the degree of sulfur oxides from flue gases. The article presents a technological solution for the integrated utilization of flue gases and wastewater from a thermal power plant with high-pressure boilers burning solid fuels.

Corrosion and Deposits From Combustion of Solid Waste—Part IV: Combined Firing of Refuse and Coal

1976 ◽  
Vol 98 (3) ◽  
pp. 369-374 ◽  
Author(s):  
H. H. Krause ◽  
D. A. Vaughan ◽  
W. K. Boyd
Keyword(s):  
Corrosion Rate ◽  
Solid Waste ◽  
Magnetic Separation ◽  
Carbon Steels ◽  
Flue Gases ◽  
Sulfur Oxides ◽  
Boiler Tube ◽  
Air Classification ◽  
Heating Value ◽  
Municipal Refuse

Combined firing of processed municipal refuse with coal has been investigated in a stoker-fired boiler. The refuse preparation consisted of shredding, magnetic separation of metals, and air classification. The nature of the deposits and the extent of corrosion of simulated boiler tube surfaces was determined by inserting probes into the boiler. For amounts of refuse up to 35 percent on a heating value basis, the corrosion rate of carbon steels was reduced substantially below that found from previous measurements for refuse alone, and below that calculated on the basis of dilution by the coal. The temperature of the boiler flue gases also was found to be an important factor in corrosion. The emissions of sulfur oxides from high sulfur coal were reduced by the action of the alkaline components of the refuse.

scholarly journals Mathematical Modeling of Wet Magnesia Flue Gas Desulphurization Process

2008 ◽  
Vol 2008 ◽  
pp. 1-6 ◽  
Author(s):  
M. K. Mondal
Keyword(s):  
Liquid Film ◽  
Sulphur Dioxide ◽  
Enhancement Factor ◽  
Rational Design ◽  
Process Analysis ◽  
Flue Gases ◽  
Gaseous Species ◽  
Chemical Absorption ◽  
Enhancement Factors ◽  
Wet Scrubbing

Desulphurization of flue gases from various chemical industries in a techno-econo-enviro manner is a demanding technology. The concentrations of sulphur dioxide in and around these plants overshoot the danger point. In recent years, the process analysis of chemical absorption in a slurry has become important in rational design and development of wet scrubbing processes for the removal ofSO2from flue gases. The elementary steps encountered in wet scrubbing by slurries are diffusion and reaction of gaseous species and solid dissolution in liquid film. In the present work, the process of the absorption of sulphur dioxide into wet magnesia slurry was theoretically analyzed according to the two-reaction plane model incorporating the solid dissolution promoted by the reactions with absorbed sulphur dioxide in the liquid film. A model based on Fick's second law has been developed to calculate enhancement factor for absorption of Sulphur dioxide intoMg(OH)2slurry. The concentration of accumulated species in the bulk of the liquid phase (sulphite ions for this case) which substantially control the absorption rates was included in the model for the prediction of theoretical enhancement factor. The values of theoretical enhancement factors obtained from model were compared with experimental enhancement factors available in literature. The model values of enhancement factors agreed well with the values of experimental enhancement factor available in literature.

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