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Author : Wanming Sun
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (369 download)
Download or read book Non-thermal Plasma Assisted Removal of SO2/NOx from Flue Gas written by Wanming Sun and published by . This book was released on 1996 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernie M. Penetrante
Publisher : Springer
ISBN 13 : 9783540571742
Total Pages : 440 pages
Book Rating : 4.5/5 (717 download)
Download or read book Non-Thermal Plasma Techniques for Pollution Control written by Bernie M. Penetrante and published by Springer. This book was released on 1993-12-20 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acid rain, global warming, ozone depletion, and smog are preeminent environmental problems facing the world today. Non-thermal plasma techniques offer an innovative approach to the solution of some of these problems. There are many types of non-thermal plasma devices that have been developed for environmental applications. The potential of these devices for the destruction of pollutants or toxic molecules has already been demonstrated in many contexts, such as nitrogen oxides (NOX) and sulfur dioxide (SO2) in flue gases, heavy metals and volatile organic compounds (VOCs) in industrial effluents, and chemical agents such as nerve gases. This book contains a comprehensive account of the latest developments in non-thermal plasma devices and their applications to the disposal of a wide variety of gaseous pollutants.
Author : Mireia Martínez Ribas
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)
Download or read book Experimental Analysis of Non-equilibrium Plasma Assisted Combustion for Removal of VOCs written by Mireia Martínez Ribas and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past few years the fight against air pollution has risen to a worldwide problem and has become one of the main challenges facing governments and worldwide institutions. It is a fact that conventional technologies are not efficient enough to face this problem so the necessity to develop new solutions and focus on different approaches is imperative and unavoidable. In particular, the goal is to avoid the continuously destruction of the atmosphere by treating the air and removing its pollutants, otherwise reducing its concentration to permitted levels for the human health. The present thesis focuses on carrying out an experimental study of VOCs removal using a non-thermal plasma technology. With a proper experimental setup, toluene was selected as the pollutant molecule to simulate the VOCs and during the experiments a homemade dielectric barrier discharge reactor was used. While plasma was assisting thermal oxidation reactions, the toluene removal efficiency was investigatedin terms of initial concentration of the pollutant, voltage of the discharges and gas ratio. Moreover, in further experiments the gas flow mixture was ignited in order to study the combined effect of plasma and combustion on toluene removal efficiency. Finally, the formation of ozone due to the plasma performance was studied in the flue gas.
Author : Selçuk Güçeri
Publisher : Springer Science & Business Media
ISBN 13 : 1402084390
Total Pages : 306 pages
Book Rating : 4.4/5 (2 download)
Download or read book Plasma Assisted Decontamination of Biological and Chemical Agents written by Selçuk Güçeri and published by Springer Science & Business Media. This book was released on 2011-10-12 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma decontamination is a rapidly expanding area of modern science and engineering. An increasing number of engineers are using plasma methods for decontamination of chemical and biological agents. Plasma decontamination is effectively applied today to clean and sterilize different surfaces, high volume air and water streams, industrial exhausts, and even living tissue of animals and humans. This book provides a fundamental introduction to virtually all aspects of modern plasma decontamination, as well as the most recent technological achievements in the area. The book is segmented into four specific sections of modern plasma decontamination: (1) plasma bio-decontamination, including disinfection and sterilization of surfaces, water and air streams; (2) plasma decontamination of chemical agents, including cleaning of air, water, and industrial exhaust gases from different pollutants and especially volatile organic compounds VOC; (3) plasma treatment of living tissue, including different subjects of plasma medicine from skin sterilization to tissue engineering; (4) major electric discharges applied for the plasma-assisted decontamination of chemical and biological agents.
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (685 download)
Download or read book Plasma-assisted Cleanup of Flue Gas. Technical Report, 1 December 1993--28 February 1994 written by and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have conclusively demonstrated that plasma chemistry alone is sufficient to convert SO2 to H2SO4, the plasma being produced by a dielectric-barrier discharge. They get nearly 80% removal of SO2 in a flue gas containing 775 ppm (parts per million) of SO2 and 99% for SO2 in concentrations of 300 ppm. A significant achievement during this period is the progress the authors have made with the wetting of the glass by the acid. They are using a simple and cheap method of coating the glass with Teflon (PTFE 30) to provide a hydrophobic surface. These films show chemical inertness to nearly all chemical and solvents and have low friction and antistick surfaces. The following important conclusions can be drawn from the results: (1) The percentage removal does not show saturation with the applied voltage. (2) The removal efficiency at an inlet temperature of 300 C is almost similar to 25 C at high voltages. (3) With longer electrodes the efficiency of removal increases. These results suggest that removal efficiency can be improved further by increasing the voltage and electrode length. The authors are yet to exploit the full range of parameters available. Therefore, it is likely that they will get much improved performance from the system.
Author :
Publisher : DIANE Publishing
ISBN 13 : 1428902805
Total Pages : 57 pages
Book Rating : 4.4/5 (289 download)
Download or read book Nitrogen oxides (NOx) why and how they are controlled written by and published by DIANE Publishing. This book was released on 1999 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernie M. Penetrante
Publisher : Springer Science & Business Media
ISBN 13 : 3642784763
Total Pages : 422 pages
Book Rating : 4.6/5 (427 download)
Download or read book Non-Thermal Plasma Techniques for Pollution Control written by Bernie M. Penetrante and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acid rain, global warming, ozone depletion, and smog are preeminent environmental problems facing the world today. Non-thermal plasma techniques offer an innovative approach to the solution of some of these problems. There are many types of non-thermal plasma devices that have been developed for environmental applications. The potential of these devices for the destruction of pollutants or toxic molecules has already been demonstrated in many contexts, such as nitrogen oxides (NOX) and sulfur dioxide (SO2) in flue gases, heavy metals and volatile organic compounds (VOCs) in industrial effluents, and chemical agents such as nerve gases. This book contains a comprehensive account of the latest developments in non-thermal plasma devices and their applications to the disposal of a wide variety of gaseous pollutants.
Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (727 download)
Download or read book Plasma-assisted Cleanup of Flue Gas. Technical Report, December 1, 1992--February 28, 1993 written by and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the proposed research is to design and implement a novel scheme for the combined removal of SO2 and NO(subscript x) using a dielectric-barrier discharge in conjunction with UV irradiation. This investigation requires the design of a dielectric-barrier reactor and testing the proposed scheme under different conditions. Extensive tests have been performed on the reactor during this period. The tests include electrical and optical emission spectroscopy for air, pure oxygen, pure nitrogen and, air with CO2 and SO2. These tests show that with an attaching gas (O2, CO2, and SO2) the discharge tends to form filamentory microdischarges. However, the use of UV irradiation tends to make the discharge more uniform. The results are encouraging because it shows that under most conditions a uniform atmospheric discharge can be maintained with UV irradiation. The results of the study were presented at the EPRI Symposium on Environmental Applications of Advanced oxidation Technologies. This symposium was jointly sponsored by EPRI and NSF.
![Download Combined Removal of SO(subscript X) and NO(subscript X) from Flue Gas Using Non-thermal Plasma. [Quarterly] Technical Report, September 1--November 30, 1994 PDF Online Free](https://books.google.com/books/content/images/frontcover/bi3cjwEACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (683 download)
Download or read book Combined Removal of SO(subscript X) and NO(subscript X) from Flue Gas Using Non-thermal Plasma. [Quarterly] Technical Report, September 1--November 30, 1994 written by and published by . This book was released on 1994 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SO2 removal efficiency was studied for concentration in the range of 333--3000 ppM (parts per million). Since the sulfur content of Illinois coal is high, the SO2 concentration in typical flue gas is in the high end of the range shown above. With high concentration of SO2 the removal efficiency decreases. However, the removal scales well with applied voltage, electrode length, and supply frequency. In this period the modeling of the process was also accomplished. The results show that a Townsend-type discharge is more efficient than a streamer type discharge in producing OH and 0 radicals. This explains why UV-irradiation helps the removal efficiency. The details are discussed in the report.
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (685 download)
Download or read book Plasma-assisted Cleanup of Flue Gas. Technical Report, September 1, 1993--November 30, 1993 written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this project period, the system for the removal of SO2 and NO(subscript x) is being studied in the presence of water vapor. Typical-mixtures being tested consist of 500--1500 parts per million SO2, 4--6% H2Og, 7--15% O2, and the balance is nitrogen. We have to date seen only a reduction in SO2 in the order of 40%. This is lower than the in dry air. At present this low reduction is attributed to arcing the discharge. A computer simulation is being performed to calculate the oxygen production rate in a dielectric-barrier discharge. The discharge is considered to be streamer like and from this the oxygen atom density can be calculated. This will give us an estimate of the amount of energy required to produce an oxygen atom. Eventually when this will be combined with a chemical code, we will get a cost estimate.
Download or read book Cinéma en marge 1980 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (946 download)
Download or read book Simultaneous Control of NOx and Organic Particles Using Plasma-Assisted Catalysis written by and published by . This book was released on 2001 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water and higher concentrations of oxygen present in diesel and turbine combustion exhausts inhibit and deactivate selective reduction (SCR) catalysts that are effective in removing NOx from internal combustion engine exhausts. Ox idation of NO to NO2, the slow step in SCR treatment, is accomplished rapidly as a competing process during plasma-catalyzed oxidation of hydrocarbon (HO) fuels in exhausts. Reduction of NO2 so formed is effected by passage of the heated stream through a bed of alumina of practically any configuration. Two-stage reactors to perform these steps were assembled and tested at bench-, pilot- and full-scale on exhaust from a 5.9-L Cummins diesel engine. The process, called plasma-assisted catalytic reduction (PACR), removed 95% of NOx at pilot scale using propene as the HO. Diesel fuel was used in the three sets of engine tests, and under these conditions PACR consistently achieved 50-55% reduction of NOx at a net fuel penalty of 5% to operate the control. Fuel sulfur did not affect the PACR process, and SO2 was not oxidized. Conduction across the high-voltage insulator was observed as a problem, but oxidation of deposited soot by the plasma was also observed and the system could be reconfigured using the plasma to prevent soot accumulation. Fuel cracking to enhance NO2 reduction was proposed but not tested.
![Download Plasma-assisted Cleanup of Flue Gas. [Quarterly] Technical Report, March 1, 1993--May 31, 1993 PDF Online Free](https://books.google.com/books/content/images/frontcover/kId7AQAACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (727 download)
Download or read book Plasma-assisted Cleanup of Flue Gas. [Quarterly] Technical Report, March 1, 1993--May 31, 1993 written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the proposed research is to design and implement a novel scheme for the combined removal of SO2 and NO(subscript x) using a dielectric-barrier discharge in conjunction with UV irradiation. This investigation requires the design of a dielectric-barrier reactor and testing the proposed scheme under different conditions. The testing of the uniformity of the discharge with UV irradiation has been very successful. The details are provide-din this report and has been submitted to the Applied Physics Letter. In this reporting period both experimental and simulation work were carried out on the removal of SO2 and NO(subscript x). With the improved reactor, we have achieved a removal of SO2 up to 85%. The simulation studies indicate that complete removal of NO(subscript x) is possible at reduced electric fields (E/N) of above 100 Td.
Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (946 download)
Download or read book NOx Removal in Jet-Engine Test Cell Exhaust: Proposed Non-Thermal Plasma Systems and Economic Considerations written by and published by . This book was released on 1999 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incentives for implementing new pollution-control technologies are both regulatory and economic. Given considerable regulatory pressure, e.g., the promulgation of a NESHAPS (National Emissions Standard for Hazardous Air Pollutants) for NOx emissions in CY 2000, new de-NOx technologies are being explored. One major reason for this is that conventional de-NOx methods (like wet scrubbers plus Selective Catalytic Reduction -SCR) will not work effectively for the low NO concentrations (e.g.,
Download or read book Combined Removal of SOsub X and NOsub X from Flue Gas Using Non-thermal Plasma written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (683 download)
Download or read book Combined Removal of SO(subscript X) and NO(subscript X) from Flue Gas Using Non-thermal Plasma. Technical Report, March 1--May 31, 1995 written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model has been developed to predict the performance of a dielectric-barrier discharge for various parameters. The model calculations have been compared with experimental results and are in close agreement for both SO2/NO removal. The reaction scheme shows that OH is the most important radical for SO2 removal with the final product being H2SO4. Whereas for NO removal both oxidation by OH to form HNO3 and reduction by N to form N2 are important channels.
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (873 download)
Download or read book Nox Reduction for Lean Exhaust Using Plasma Assisted Catalysis written by and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently CARB estimates on road diesel vehicles contribute 50% of the NOX and 78% of the particulates being discharged from mobile sources. Diesel emissions obviously must be reduced if future air quality targets are to be met. A critical technological barrier exists because there are no commercial technologies available, which can reduce NOX from diesel (lean), exhaust containing 5-15% O2 concentration. One promising approach to reducing NOX and particulates from diesel exhaust is to use a combination of plasma with catalyst. Plasma can be generated thermally or non-thermally. Thermal plasma is formed by heating the system to an exceedingly high temperature (>2000 C). High temperature requirements for plasma makes thermal plasma inefficient and requires skillful thermal management and hence is considered impractical for mobile applications. Non-thermal plasma directs electrical energy into the creation of free electrons, which in turn react with gaseous species thus creating plasma. A combination of non-thermal plasma with catalysts can be referred to Plasma Assisted Catalysts or PAC. PAC technology has been demonstrated in stationary sources where non-thermal plasma catalysis is carried out in presence of NH3 as a reductant. In stationary applications NO is oxidized to HNO3 and then into ammonium nitrate where it is condensed and removed. This approach is impractical for mobile application because of the ammonia requirement and the ultimate mechanism by which NOX is removed. However, if a suitable catalyst can be found which can use onboard fuel as reductant then the technology holds a considerable promise. NOX REDUCTION FOR LEAN EXHAUST USING PLASMA ASSISTED CATALYSIS Ralph Slone, B. Bhatt and Victor Puchkarev NOXTECH INC. In addition to the development of an effective catalyst, a non-thermal plasma reactor needs be scaled and demonstrated along with a reliable and cost effective plasma power source and onboard HC source needs to be proven. Under the work sponsored by DOE and SCAQMD Noxtech is developing a cost effective and reliable PAC system for mobile applications. The goal of the program is to develop a suitable catalyst with the ability to remove high levels of NOx at reasonable space velocities. This new catalyst will then be used to scale the technology to treat exhaust from 80Hp engine and eventually to demonstrate the technology on 200 and 400 Hp engine applications. Using the 2004 EPA proposed regulation as a standard, it is clear in order for PAC system to be commercially viable it needs to remove NOX by 70% or better. It is further assumed from past experience that 30,000 HR-1 space velocities are necessary to ensure a good compact design.
