scholarly journals Acidity of rainfall samples in close vicinity of coal-fired power plant with wet cooling tower with flue gas injection

2021 ◽  
Vol 193 (10) ◽  
Author(s):  
Katarzyna Korszun-Klak ◽  
Stanislaw Hlawiczka ◽  
Rafal Kobylecki
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Coal Combustion ◽  
Cooling Tower ◽  
Reference Data ◽  
Ph Value ◽  
Measurement Data ◽  
Flue Gases ◽  
Combustion Gases ◽  
Degree Of Acidification

AbstractThe paper presents measurement data concerning the degree of acidification of precipitation collected during a 6-month measurement campaign carried out in an immediate vicinity of a power plant, where the cooling tower was used for discharging flue gases as a product of coal combustion. As reference, data obtained from parallel measurements carried out at a monitoring station considered as city background station were used. High acidity of precipitation was anticipated due to reactions of acid gases contained in the combustion gases with water, which already occur inside the cooling tower. The results have not confirmed this assumption. The pH value of the precipitation samples was significantly higher than the pH of rainwater at the background station located 18 km away from the power plant.

scholarly journals Improving the efficiency of power boilers by cooling the flue gases to the lowest possible temperature under the conditions of safe operation of reinforced concrete and brick chimneys of power plants

2018 ◽  
Vol 245 ◽  
pp. 07014 ◽  
Author(s):  
Evgeny Ibragimov ◽  
Sergei Cherkasov
Keyword(s):  
Reinforced Concrete ◽  
Power Plant ◽  
Flue Gas ◽  
Power Plants ◽  
Thermal Power ◽  
Operating Mode ◽  
Flue Gases ◽  
Technical Solution ◽  
Gas Temperature ◽  
Safe Operation

The article presents data on the calculated values of improving the efficiency of fuel use at the thermal power plant as a result of the introduction of a technical solution for cooling the flue gases of boilers to the lowest possible temperature under the conditions of safe operation of reinforced concrete and brick chimneys with a constant value of the flue gas temperature, when changing the operating mode of the boiler.

As, Hg, and Se Flue Gas Sampling in a Coal-Fired Power Plant and Their Fate during Coal Combustion

2003 ◽  
Vol 37 (22) ◽  
pp. 5262-5267 ◽  
Author(s):  
José R. Otero-Rey ◽  
José M. López-Vilariño ◽  
Jorge Moreda-Piñeiro ◽  
Elia Alonso-Rodríguez ◽  
Soledad Muniategui-Lorenzo ◽  
...  
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Coal Combustion ◽  
Gas Sampling

Flue-Gas Desulfurization Technology and its Equipment

2013 ◽  
Vol 788 ◽  
pp. 466-470 ◽  
Author(s):  
Hui Di Hao ◽  
Tian Zhai ◽  
Yong Fang Zhang ◽  
Jian Yong Lei ◽  
Tian Qi Cheng ◽  
...  
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Thermal Power Plant ◽  
Rapid Development ◽  
Thermal Power ◽  
Electric Energy ◽  
Flue Gases ◽  
Flue Gas Desulfurization ◽  
Control Technology ◽  
Main Component

The peak of power consumption will be brought by the rapid development of the industry. Thermal power is still the main component of electric energy at present. More and more attention has been paid on the atmospheric pollution caused by the thermal power plant in our country. The sulfur dioxide (SO2), one of the thermal power plant flue gases, is dangerous to the environment and human. Effective SO2 control technology can not only reduce the environmental pollution but also the sulfur can be recovered in order to conserve resources.

scholarly journals Comparative 3-E (Energy, Exergy & Environmental) Analysis of Oxy-Coal and Air-Coal Combustion based 500 MWe Supercritical Steam Power Plants with CO2 Capture

2020 ◽  
Vol 5 (4) ◽  
pp. 652-662
Author(s):  
Soumya Jyoti Chatterjee ◽  
Goutam Khankari ◽  
Sujit Karmakar
Keyword(s):  
Power Plant ◽  
Co2 Capture ◽  
Flue Gas ◽  
Coal Combustion ◽  
Co2 Emission ◽  
Power Plants ◽  
Exergy Destruction ◽  
Furnace Temperature ◽  
Auxiliary Power ◽  
Energy And Exergy

The comparative performance study is carried out for 500 MW Supercritical (SupC) Oxy-Coal Combustion (OCC) and Air-Coal Combustion (ACC) power plants with membrane-based CO2 capture at the fixed furnace temperature. The proposed configurations are modelled using a computer-based analysis software 'Cycle-Tempo' at different operating conditions, and the detailed thermodynamic study is done by considering Energy, Exergy, and Environmental (3-E) analysis. The result shows that the net energy and exergy efficiencies of ACC power plants with CO2 capture are about 35.07 % and 30.88 %, respectively, which are about 6.44 % and 5.77 % points, respectively higher than that of OCC power plant. Auxiliary power consumption of OCC based power plant is almost 1.97 times more than that of the ACC based plant due to huge energy utilization in the Air Separation Unit (ASU) of OCC plant which leads to performance reduction in OCC plant. However, environmental benefit of OCC based power plant is more than that of ACC based power plant with respect to CO2 emission. OCC plant emits about 0.164 kg/kWh of CO2 which is approximately 16.75 times lower than the CO2 emission in ACC based power plant. It is also analyzed that the performance of the CO2 Capture Unit (CCU) for the OCC based plant is about 3.65 times higher than the ACC based power plant due to higher concentration of CO2 (nearly 80.63%) in the flue gas emitting from OCC plant. The study also reveals that the auxiliary power consumption per kg of CO2 capture of the OCC based plant is about 0.142 kWh/kg, which is approximately 0.06 times lower than the ACC based plant. The higher performance of the OCC based power plant is found at lower value of flue gas recirculation due to the fact that reduction in exergy destruction at the mixing zone of the combustor is higher than the increase in exergy destruction of the heat exchangers at higher furnace exit temperature. But the metallurgical temperature limit of boiler tube materials restricts the use of the higher value of furnace temperature. OCC based power plant with CO2 capture can be preferred over ACC based plant with CO2 capture due to higher environmental benefits towards mitigating CO2, the key greenhouse gas on earth in spite of exhibiting lesser energy and exergy efficiencies.

CALCULATION OF THE DRAINAGE SYSTEM OF LEAVING FLUE GASES FROM THE TURBINE THROUGH THE COOLING TOWER

2018 ◽  
Vol 8 (1) ◽  
pp. 135-138
Author(s):  
Anatoly A. KUDINOV ◽  
Yulia E. DEMINA
Keyword(s):  
Power Plant ◽  
Cooling Tower ◽  
Drainage System ◽  
Combined Cycle ◽  
Flue Gases ◽  
Simultaneous Reduction ◽  
Turbine Plant ◽  
Circulating Water ◽  
Effi Ciency ◽  
Gas Turbine Plant

The article presents result of a research a system of the venting of exhaust gases of the recovery boiler the gas turbine plant through the natural draft cooling tower in the environment. The use of this scheme allows the fl ue gases to lower the temperature of the circulating water at the outlet of the cooling tower to provide a deeper vacuum in the condenser steam turbine combined cycle power plant with simultaneous reduction of capital to build chimneys. As a result of the application of this scheme, an increase in the absolute electric effi ciency of turbines is achieved. As stated in Article method of calculating the removal of exhaust fl ue gas systems with a perforated distributor ring allows to determine the level of engineering design and volume requirements of these systems.

Removal of Mercury from Simulated Coal Combustion Flue Gas by Iron Sulfide-AC Adsorbent

2014 ◽  
Vol 1004-1005 ◽  
pp. 603-607 ◽  
Author(s):  
Sheng Ji Wu ◽  
Wei Yang ◽  
Jie Zhou ◽  
Zheng Miao Xie
Keyword(s):  
Flue Gas ◽  
Coal Combustion ◽  
Iron Sulfide ◽  
Removal Rate ◽  
Temperature Programmed Desorption ◽  
Flue Gases ◽  
Mercury Removal ◽  
Bet Surface Area ◽  
Higher Temperature ◽  
Temperature Programmed

Iron sulfide-AC adsorbents were prepared and their mercury removal capabilities were evaluated in the simulated coal combustion flue gases. The FeS2has much higher mercury removal rate than AC although it has much lower BET surface area than AC. FeS2also shows higher mercury removal rate than FeS, which is probably due to its higher free sulfur content on the FeS2. The mercury removal capability of AC modified FeS2decreases with increasing of AC content. Temperature programmed desorption/decomposition process (TPDD) shows FeS and FeS2have more desorption peak than AC and the main peaks of FeS and FeS2are at around 240°C. The desorption peaks of AC modified FeS2are shifted to the higher temperature compared with that of FeS2and more mercury compositions are desorbed by AC modified FeS2.

scholarly journals Sulfation and Carbonation Competition in the Treatment of Flue Gas from a Coal-Based Power Plant by Calcium Hydroxide

2015 ◽  
Vol 13 (2) ◽  
pp. 177-182 ◽  
Author(s):  
Josefa Fernández ◽  
M. J. Renedo
Keyword(s):  
Power Plant ◽  
Calcium Hydroxide ◽  
Flue Gas ◽  
Coal Combustion ◽  
Reaction Process ◽  
Gas Analyzer ◽  
Acid Gases

Abstract In this work, a gas containing CO2 and SO2 at the usual concentrations on the coal combustion flue gas reacted with calcium hydroxide to evaluate and quantify the influence of SO2 on the CO2 capture and vice versa. This influence was quantified with a continuous gas analyzer and by thermogravimetry (TG). Results show that the CO2 retained increases in general as its concentration does and decreases as the SO2 concentration increases. A similar behavior was found for the SO2 retention at different CO2 concentrations being more relevant the influence of the presence of SO2 on the CO2 capture than the opposite one. Results suggest that for a high CO2 capture, SO2 should be eliminated previously. With respect to the reaction process it was found that the desulfurization product clearly identified was CaSO3·½H2O; in the reaction between Ca(OH)2 and CO2, CaCO3 is mainly obtained, the complex CaO·CO2 being another possible product synthesized in low amount. Gas analyzer shows that SO2 and CO2 react simultaneously and that a part of the CaCO3 reacts with the SO2 and releases CO2. Sulfation values calculated by TG and from the gas analyzer are very similar but the amount of CO2 captured is not possible to know clearly by TG due to the synthesis and decomposition of CaCO3 during the process. The study of the evolution of the sorbent porosity in the process reveals that the presence of both acid gases produces a lower blockage of the pores than when only one gas is present probably due to the generation of new pores in the reaction of CaCO3 and SO2.

scholarly journals Desulfurisasi dan Penyerapan Merkuri secara Simultan dari Batubara Peringkat Rendah (Aceh Barat) untuk Aplikasi Power Plant dengan Adsorben Zeolit

2019 ◽  
Vol 7 (1) ◽  
pp. 73
Author(s):  
Yuanda Wattimena ◽  
Asri Gani ◽  
Medyan Riza
Keyword(s):  
Stainless Steel ◽  
Fly Ash ◽  
Power Plant ◽  
Fluidized Bed ◽  
Flue Gas ◽  
Coal Combustion ◽  
Bottom Ash ◽  
Tube Furnace ◽  
Fluidized Bed Combustion ◽  
Gas Combustion

Adsorpsi emisi pembakaran batubara dengan menggunakan adsorben zeolit pada jenis briket dan pulverized telah dilakukan. Penelitian ini bertujuan untuk mengurangi emisi gas SO2 dan logam Hg yang berbahaya apabila rilis di udara bebas dengan cara menggunakan adsorben zeolit untuk kecendrungan emisi menjadi bottom ash yang lebih terkendali. Pengujian ini fokus mengevaluasi rasio optimal rasio adsorben terhadap jumlah batubara terhadap performa penyerapan, sehingga penggunaannya tidak mengurangi nilai bakar batubara. Prosedur pembakaran ekspremintal awal dimulai dari pencampuran batubara dan zeolit dengan rasio 4%, 6%, 8%, 10%  dan 12%  yang dibagi dalam bentuk briket dan pulverized. Kedua jenis sampel dibakar secara berurutan pada electrical stainless steel reaction tube furnace pada kondisi temperatur pembakaran Fludized Bed Coal Combustion yaitu 600oC, 700oC, dan 800oC dengan laju alir udara disesuaikan. Flue gas hasil pembakaran yang keluar dari outlet dianalisa menggunakan Gas Combustion and Emission Analyzer (E4400, E-Instrument). Logam Hg yang yang diserap oleh zeolit pada Bottom Ash dianalisa menggunakan NIC Mercury SP Anlayzer. Hasil pengujian menunjukan kinerja zeolit terhadap kapasitas penyerapan logam Hg untuk pembakaran batubara pulverized pada temperatur pembakaran  600oC, 700oC dan 800oC masing-masing didapat pada angka 33,6, 19,25 dan 9,97 ppb/gr serta pada pembakaran briket batubara  masing-masing didapat sebesar 59,83, 37,8 dan 24,22 ppb/gr. Secara simultan untuk mengurangi emisi SO2 dan logam berat Hg pada fly ash untuk temperatur pembakaran Fludized Bed Coal Combustion rasio optimum berkisar antara 6%-8% adsoben zeolit dari jumlah massa batubara Kaway XVI Kabupaten Aceh Barat. Kata kunci:adsorpsi,  fluidized bed combustion, zeolit, briket, pulverized

scholarly journals Separation of Carbon Dioxide from Real Power Plant Flue Gases by Gas Permeation Using a Supported Ionic Liquid Membrane: An Investigation of Membrane Stability

Membranes ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 35 ◽  
Author(s):  
Patrik Klingberg ◽  
Kai Wilkner ◽  
Markus Schlüter ◽  
Judith Grünauer ◽  
Sergey Shishatskiy
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Power Plant ◽  
Flue Gas ◽  
Liquid Membrane ◽  
Volume Fraction ◽  
Membrane Stability ◽  
Flue Gases ◽  
Real Power ◽  
Supported Ionic Liquid

The separation of carbon dioxide from coal-fired power plant flue gases using a CO2/N2-selective supported ionic liquid membrane (SILM) was investigated and the performance and stability of the membrane during operation are reported. The membrane is composed of a polyacrylonitrile (PAN) ultrafiltration membrane as a support and a selective layer of an ionic liquid (IL), 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIM Tf2N). The feasibility of large-scale SILM production was demonstrated by the formation of a square-meter-scale membrane and preparation of a membrane module. A flat-sheet envelope-type SILM module containing 0.67 m2 of the membrane was assembled. Prior to real flue gas operation, the separation behaviour of the membrane was investigated with single gases. The stability of the SILM during the test stand and pilot plant operation using real power plant flue gases is reported. The volume fraction of carbon dioxide in the flue gas was raised from approx. 14 vol. % (feed) to 40 vol. % (permeate). However, issues concerning the membrane stability were found when SO3 aerosols in large quantities were present in the flue gas.

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