scholarly journals Investigation of the Sorption Properties of Ore Materials for the Removal of Sulfur Dioxide from Exhaust Flue Gases of Power Plants

2015 ◽  
Vol 17 (2) ◽  
pp. 137 ◽  
Author(s):  
N.V. Shikina ◽  
S.R. Khairulin ◽  
N.A. Rudina ◽  
T.N. Teryaeva ◽  
E.S. Mikhaylova ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Physicochemical Parameters ◽  
Power Plants ◽  
Flue Gases ◽  
Gulf Of Finland ◽  
Strength Analysis ◽  
Natural Material ◽  
Sorptive Capacity ◽  
X Ray ◽  
The Gulf Of Finland

The prospects of using a natural material – ferromanganese nodules (FMN) from<br />the Gulf of Finland – as the SO2 adsorbent are discussed. The starting material was<br />studied as pellets and powder using X-ray fluorescence spectroscopy, XRD, BET,<br />and mechanical strength analysis; dependences of physicochemical parameters of<br />the material on heat treatment at 100-1000 ºC were found. FMN samples were tested in the process of SO2 sorption. The sorptive capacity of FMN samples for SO2 was found to increase with humidity of adsorbents; FMN samples with a humidity above 40% were shown to be promising for the removal of sulfur dioxide from gases.

The Use of Technogenic Waste to Clean the Flue Gases of Thermal Devices from Harmful Substances

2019 ◽  
Vol 23 (6) ◽  
pp. 4-7
Author(s):  
A.M. Pogodaev ◽  
A.F. Shimansky ◽  
Yu.I. Storozhev ◽  
Ya.V. Kazantsev ◽  
V.S. Zlobin
Keyword(s):  
Sulfur Dioxide ◽  
Flue Gas ◽  
Power Plants ◽  
Thermal Power ◽  
Fixed Bed ◽  
Flue Gases ◽  
Alumina Production ◽  
Laboratory Installation ◽  
Gas Cleaning ◽  
Industrial Experiments

The thermodynamics of the process of calcium sulfate decomposition is considered. An adsorbent for cleaning flue gases from sulfur dioxide in the form of sludge from alumina production is proposed. Conducted semi-industrial experiments on cleaning the flue gases of small thermal power plants and boiler houses from sulfur dioxide using a laboratory installation. Established high (more than 90%) the effectiveness of the proposed adsorbent. The unique possibility of flue gas cleaning from nitrogen oxides of thermal devices using lignite fuel is revealed. A scheme of sequential flue gas cleaning in a suspended and fixed bed of the adsorbent is proposed.

scholarly journals Modified sludge-based purification of flue gases produced by thermal power plants

2020 ◽  
Vol 216 ◽  
pp. 01082
Author(s):  
Elvira Khusnutdinova ◽  
Larisa Nikolaeva
Keyword(s):  
Water Treatment ◽  
Power Plant ◽  
Sulfur Dioxide ◽  
Power Plants ◽  
Thermal Power ◽  
Flue Gases ◽  
Water Treatment Sludge ◽  
Kinetic Dependence ◽  
Sorption Material ◽  
Chemical Water

This paper proposes an adsorption-based method of removing sulfur dioxide from the flue gases produced by the thermal power plant. A power plant waste – chemical water treatment sludge available at Kazan CHPP-1 – was used as an adsorption material. Presented here is the chemical composition of the chemical water treatment sludge for a modified sorption material to be designed therefrom. The new sorp-tion material was trial tested for removal of sulfur dioxide from gases. This resulted in kinetic dependence and adsorption isotherm. The test results were then used to design the adsorber. The economic and envi-ronmental effect of using the chemical water treatment sludge as the sorption material was calculated.

scholarly journals Carbonate Minerals with Magnesium in Triassic Terebratula Limestone in the Term of Limestone with Magnesium Application as a Sorbent in Desulfurization of Flue Gases

2017 ◽  
Vol 62 (3) ◽  
pp. 459-482
Author(s):  
Katarzyna Stanienda-Pilecki
Keyword(s):  
Carbonate Rock ◽  
Power Plants ◽  
Flue Gases ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rock Samples ◽  
Low Magnesium ◽  
Desulfurization Process ◽  
Magnesium Calcite ◽  
Characteristic Features

AbstractThis article presents the results of studies of Triassic (Muschelkalk) carbonate rock samples of the Terebratula Beds taken from the area of the Polish part of the Germanic Basin. It is the area of Opole Silesia. The rocks were studied in the term of possibility of limestone with magnesium application in desulfurization of flue gases executed in power plants. Characteristic features of especially carbonate phases including magnesium-low-Mg calcite, high-Mg calcite, dolomite and huntite were presented in the article. They were studied to show that the presence of carbonate phases with magnesium, especially high-Mg calcite makes the desulfurization process more effective. Selected rock samples were examined using a microscope with polarized, transmitted light, X-ray diffraction, microprobe measurements and FTIR spectroscopy. The results of studies show a domination of low magnesium calcite in the limestones of the Terebratula Beds. In some samples dolomite and lower amounts of high-Mg calcite occurred. Moreover, huntite was identified. The studies were very important, because carbonate phases like high-Mg calcite and huntite which occurred in rocks of the Triassic Terebratula Beds were not investigated in details by other scientists but they presence in limestone sorbent could influence the effectiveness of desulfurization process.

scholarly journals Oil spill waste treatment in the Kymenlaakso region after a ship accident

2007 ◽  
pp. 551-561
Author(s):  
Mari Hupponen ◽  
Mika Horttanainen ◽  
Mika Luoranen
Keyword(s):  
Oil Spill ◽  
Power Plants ◽  
Waste Treatment ◽  
Gulf Of Finland ◽  
Accident Risk ◽  
Treatment Methods ◽  
Oily Waste ◽  
Under Construction ◽  
The Baltic ◽  
The Gulf Of Finland

The significance of the Gulf of Finland, which is part of the Baltic Sea, as an oil transportroute has increased rapidly in recent years. Approximately 140 million tons of oil wastransported through the Gulf of Finland in the year 2006. The amount of transport has doubledin a few years. At the same time, the accident risk has increased. The narrowness and thefragmented coastline make the Gulf of Finland extremely vulnerable in an oil spill situation.There is as yet no comprehensive plan in Finland for how to treat oil spill waste after a largescale accident. The aim of this study was to find out treatment methods and capacities in theKymenlaakso region for the oily waste collected from the coastline after a large oil accident inthe Gulf of Finland.This study presents the principles of the treatment methods of oil spill waste and thelimitations of the methods in handling the waste. The article also includes a background studyof the treatment of wastes collected from the coastline from previous major oil accidents.The possibilities of different companies to treat oily waste in the Kymenlaakso region werestudied. Detailed information was collected by interviewing the companies' workers. 19 000 tof crushable oily equipment and organic matter mixed with normal solid fuels can be burnedannually in the fluidized bed furnaces of regional power plants. I 200 t of homogenized oilyorganic matter can be burned annually in the rotary kiln of a factory which produces expandedclay (LECA). The region's burning capacity will increase when the municipal solid wasteincineration plant that was under construction during the study is ready and the oil spill wastecan be burned on its grate. Oily soil can be treated with composting, washing, soil vapourextraction and stabilization with bitumen. Mobile treatment plants suitable for oily waste,such as thennal desorption plants, can also be transported to the region.

scholarly journals Effect of Solid Fuel Mineral Composition on the Formation of Sour Pulp in Hydro-Slug Removal System of Thermal Power Plants

2014 ◽  
Vol 16 (4) ◽  
Author(s):  
K.S. Idrissova ◽  
A.A. Tumanova
Keyword(s):  
Coal Combustion ◽  
Power Plants ◽  
Chemical Interaction ◽  
Thermal Power ◽  
Diffraction Method ◽  
Flue Gases ◽  
Quantitative Composition ◽  
Thermal Power Plants ◽  
Slag Removal ◽  
X Ray

<p>Researches have been conducted into the causes of acidity of pulp formed in the system of circulating hydraulic ash and slag removal in thermal power plants (TPP) when using coals of Ekibastuz and Karaganda coal fields of the Republic of Kazakhstan. We have carried out a comparative study of combustion of Karazhyra and Maikube coals at the two RK TPPs with BKZ-75-39FB and BKZ-160-100FB steam boilers. For ash collection, wet ash collectors with remounted Venturi tube coagulators have been installed on TPP. In them, a chemical interaction of irrigating water with flue gases occurs, which include CO<sub>2</sub>, SO<sub>2</sub>, SO<sub>3</sub> and ash particles. The ash pulp formed moves to the pipeline, mixes with the slag pulp and is further transported along a tract to the ash dump. We have defined the relationship between the composition of the products of coal combustion and the formation of acidic pulp in the scrubber. Qualitative and quantitative composition of coals and their combustion products have been determined by the methods of X-ray and X-ray fluorescence analysis. As the analysis showed, the main components of ash and slag materials are the oxides SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, CaO, MgO, K<sub>2</sub>О, Na<sub>2</sub>O. In the wet ash collectors gaseous substances present in flue gases, are dissolved and hydrolysed in irrigating water. While hydroremoving ash and slag, the compounds are dissolved in water and undergo hydrolysis. Oxides SiO<sub>2</sub>, SO<sub>2</sub>, TiO<sub>2</sub>, P<sub>2</sub>O<sub>5</sub> are hydrolyzed into acid, oxides CaO, MgO, K<sub>2</sub>O and Na<sub>2</sub>O – into base, Al<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3 </sub>– into amphoteric compounds. Chemical analysis of ash and slag pulp formed after Karazhyra coal combustion has been carried out. Calculation of the acidity of ash and slag material has been performed. Karazhyra coal ash is more acidic in nature. A lower content of amphoteric oxides in Maikube coal appears to be the cause of the pulp formation, with a higher pH. With X-ray diffraction method, the nature of combinations of metal oxides in the samples of coal, slag and ash have been determined. </p>

Emissions From Waste-to-Energy: A Comparison With Coal-Fired Plants

2003 ◽  
Author(s):  
Dionel O. Albina ◽  
Nickolas J. Themelis
Keyword(s):  
Particulate Matter ◽  
Sulfur Dioxide ◽  
Nitrogen Oxides ◽  
Hydrogen Chloride ◽  
Power Plants ◽  
Electrical Energy ◽  
Flue Gases ◽  
Waste To Energy ◽  
Energy Output ◽  
Cadmium Lead

Nationwide data of the emissions from waste-to-energy and coal-fired power plants arecompared. The emissions of sulfur dioxide and hydrogen chloride, particulate matter, nitrogen oxides and trace elements, such as cadmium, lead and mercury are compared, both in terms of thermal energy input and electrical energy output. The results of the study have shown that emissions of sulfur dioxide, particulate matter and nitrogen oxides were lower from waste-to-energy (WTE) facilities than from coal-fired plants. Hydrogen chloride emissions are higher in WTE flue gases. Emissions of cadmium, lead and mercury from WTE and coal-fired plants are nearly the same.

Investigation of the sorption of mercury vapour from exhaust gas by an Ag-X zeolite

Clay Minerals ◽  
2015 ◽  
Vol 50 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Magdalena Wdowin ◽  
Mariusz Macherzyński ◽  
Rafał Panek ◽  
Jerzy Górecki ◽  
Wojciech Franus
Keyword(s):  
Flue Gas ◽  
Power Plants ◽  
Gas Flow ◽  
Fixed Bed ◽  
Flue Gases ◽  
Mercury Vapour ◽  
Exhaust Gas ◽  
Mercury Adsorption ◽  
X Ray ◽  
X Zeolite

AbstractThe removal of gaseous mercury from flue gases from coal-fired power plants is currently an environmental challenge under investigation. Therefore, the main aim of this paper was to evaluate the suitability of faujasite group zeolites (Na-X) to adsorb mercury compounds. Previous, initial tests showed negligible Hg0 uptake by Na-X zeolite, but silver impregnation improved adsorption markedly. Therefore, the testing of mercury adsorption from flue gases into Ag+- impregnated Na-X synthetic zeolite (Ag-X zeolite) derived from coal fly ash was carried out. This material was characterized by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy, X-ray fluorescence and nitrogen adsorption/desorption before being evaluated for mercury removal from exhaust gas. After preliminary mercury adsorption tests (fixed bed) under a nitrogen atmosphere, the adsorbent was examined with a simulated flue gas composition under various conditions, i.e. weight of zeolite, temperature of experiment and zeolite in powder and granulated forms. The removal of mercury was shown to depend on the sorbent texture (powder or granulate), exhaust gas flow rate and contact time, as well as the temperature of the experiment. The Ag-X zeolite tested reduced the level of mercury in the flue gas and, depending on the experimental conditions, long-time mercury breakthrough ranges from 15 to 40% were obtained. The best results for mercury capture were obtained for granulated material.

Zooplankton of Koporskaya Bay of the Gulf of Finland in the Zone of the Influence of the Leningrad NPS

2014 ◽  
Vol 50 (4) ◽  
pp. 3-14
Author(s):  
M. Ye. Makushenko ◽  
D. V. Kulakov ◽  
Ye. A. Vereshchagina
Keyword(s):  
Gulf Of Finland ◽  
The Gulf Of Finland

Characteristics and Structure of the Cumulonimbus Cloud with Waterspout over the Gulf of Finland

2020 ◽  
Vol 45 (9) ◽  
pp. 607-614
Author(s):  
V. B. Popov ◽  
A. A. Sin’kevich ◽  
J. Yang ◽  
Yu. P. Mikhailovskii ◽  
M. L. Toropova ◽  
...  
Keyword(s):  
Gulf Of Finland ◽  
The Gulf Of Finland ◽  
Cumulonimbus Cloud
Sign in / Sign up

Export Citation Format

Share Document