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Simultaneous So2 No3 Abatement Using Zeolite Supported Copper Progress Report October 1 1995 September 30 1996
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Book Synopsis Simultaneous SO2/NO3 Abatement Using Zeolite-supported Copper. Progress Report, October 1, 1995--September 30, 1996 by :
Download or read book Simultaneous SO2/NO3 Abatement Using Zeolite-supported Copper. Progress Report, October 1, 1995--September 30, 1996 written by and published by . This book was released on 1996 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bulk of the results from this project, besides being found in the research reports, are in the form of two theses presented for advanced degrees by two different students at two different institutions. Francis E. Porbeni is a Masters̀ Degree student in Chemistry at Clark Atlanta University and has prepared his Masters̀ Thesis entitled Simultaneous SO2 Oxidation and NO Decomposition over Copper Oxide on?-Alumina Catalysts: An Infrared Diffuse Reflectance Study. Sumit Rao, a Ph. D. student in Chemical Engineering at the Georgia Institute of Technology has defended his thesis entitled Role of Copper Ensemble Size in Silica and Zeolite Supported Catalysts for Nitric Oxide Decomposition. These two documents, which will be forwarded when final copies are available, provide the details of the bulk of the research accomplished over the duration of this project. These two documents are summarized, and other results from the project are given.
Book Synopsis Simultaneous SO2/No3 Abatement Using Zeolite-supported Copper. Progress Report, October 1--December 31, 1995 by :
Download or read book Simultaneous SO2/No3 Abatement Using Zeolite-supported Copper. Progress Report, October 1--December 31, 1995 written by and published by . This book was released on 1995 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron paramagnetic resonance (EPR) spectroscopy has been used to investigate the nature of copper ions supported on oxides and on zeolites. The results show that, unfortunately, EPR may not be a very useful predictor of the catalytic activity of supported copper catalysts.
Book Synopsis Simultaneous SO[sub 2]/NO[sub X] Abatement Using Zeolite-supported Copper. Progress Report, October 1, 1995--September 30, 1996 by :
Download or read book Simultaneous SO[sub 2]/NO[sub X] Abatement Using Zeolite-supported Copper. Progress Report, October 1, 1995--September 30, 1996 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The bulk of the results from this project, besides being found in the research reports, are in the form of two theses presented for advanced degrees by two different students at two different institutions. Francis E. Porbeni is a Master's Degree student in Chemistry at Clark Atlanta University and has prepared his Master's Thesis entitled Simultaneous SO[sub 2] Oxidation and NO Decomposition over Copper Oxide on[gamma]-Alumina Catalysts: An Infrared Diffuse Reflectance Study. Sumit Rao, a Ph. D. student in Chemical Engineering at the Georgia Institute of Technology has defended his thesis entitled Role of Copper Ensemble Size in Silica and Zeolite Supported Catalysts for Nitric Oxide Decomposition. These two documents, which will be forwarded when final copies are available, provide the details of the bulk of the research accomplished over the duration of this project. These two documents are summarized, and other results from the project are given.
Book Synopsis Simultaneous SO2/NO3 Abatement Using Zeolite Supported Copper. Quarterly Progress Report, October 1, 1994--December 31, 1994 by :
Download or read book Simultaneous SO2/NO3 Abatement Using Zeolite Supported Copper. Quarterly Progress Report, October 1, 1994--December 31, 1994 written by and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have made progress in characterizing a Cu-exchanged ZSM-5 for NO decomposition activity. Additionally, we are pursuing the impregnation of alumina with vanadium and copper and studying the adsorption and reaction of SO2 on these catalysts.
Book Synopsis Simultaneous SO2/NO3 Abatement Using Zeolite-supported Copper. Progress Report, January 1--March 31, 1996 by :
Download or read book Simultaneous SO2/NO3 Abatement Using Zeolite-supported Copper. Progress Report, January 1--March 31, 1996 written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have begun the investigation of the adsorption of NO on the Cu/?-alumina samples. The object of this aspect of the project is to investigate the modes of adsorption of NO on the Cu/?-alumina sorbents, to investigate the potential activity of these materials for the catalysis of the reduction of NO. Additionally, when subsequent measurements of NO interacting with a sulfated sorbent are investigated, a baseline of data will have been obtained which can be used to evaluate the effects of surface sulfation on the adsorption process in the absence of other competing effects. Based on the current results and by comparing results with those found by others, the authors have determined that the copper species exist predominantly as isolated copper atoms on the aluminum oxide surface, which behave chemically as copper aluminate. The copper species is responsible for the formation of an NO/Cu{sup 2+} complex which gives rise to an infrared absorption at 1,863 cm−1. There do exist some Cu species on the surface, which are formed only after some time by an interaction with NO, which give rise to an NO−/Cu+ complex with an infrared absorption at approximately 1,700 cm−1. Additionally, an intense feature at 1,640 cm−1 is observed which may be due to NO2 on the surface, which is the expected oxidation product if NO reduces Cu from Cu{sup 2+} to Cu+.
Book Synopsis Simultaneous SO2/NOx Abatement Using Zeolite-supported Copper Oxide by : Mark G. White
Download or read book Simultaneous SO2/NOx Abatement Using Zeolite-supported Copper Oxide written by Mark G. White and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996-07 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 11, September 1--November 30, 1993 by :
Download or read book Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 11, September 1--November 30, 1993 written by and published by . This book was released on 1993 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NOXSO process is a dry, post-combustion flue gas treatment technology which uses a regenerable sorbent to simultaneously adsorb sulfur dioxide (SO2) and nitrogen oxides (NO3 from the flue gas of a coal-fired utility boiler. In the process, the SO2 is reduced to sulfur by-product and the NO3 is reduced to nitrogen and oxygen. It is predicted that the process can economically remove 90% of the acid rain precursor gases from the flue gas stream in a retrofit or new facility. The objective of the NOXSO Demonstration Project is to design, construct, and operate a flue gas treatment system utilizing the NOXSO process. The effectiveness of the process will be demonstrated by achieving significant reductions in emissions of sulfur and nitrogen oxides. In addition, sufficient operating data will be obtained to confirm the process economics and provide a basis to guarantee performance on a commercial scale. The project is presently in the project definition and preliminary design phase. Data obtained during pilot plant testing which was completed on July 30, 1993 is being incorporated in the design of the commercial size plant. A suitable host site to demonstrate the NOXSO process on a commercial scale is presently being sought. Preliminary engineering studies provided information to decide on the basic plant arrangement. A scaled up POC design was selected as the general arrangement of choice based on a cost versus technical risk assessment. The first step in developing an adsorber computer simulation was completed. Several processes for producing liquid SO2 from the regenerator offgas were developed and evaluated. It was concluded that the Claus and burn process which involves making elemental sulfur as an intermediate product was the best choice. The NOXSO process computer simulation was updated to include semi-plug solids flow through the fluidized beds of the sorbent heater and cooler. Heat loss calculations were also added.
Book Synopsis Microbial Reduction of SO2 and NO3 as a Means of By- Product Recovery/disposal from Regenerable Processes for the Desulfurization of Flue Gas. Technical Progress Report, June 11, 1992--September 11, 1992 by :
Download or read book Microbial Reduction of SO2 and NO3 as a Means of By- Product Recovery/disposal from Regenerable Processes for the Desulfurization of Flue Gas. Technical Progress Report, June 11, 1992--September 11, 1992 written by and published by . This book was released on 1992 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the work described simultaneous SO2/Nox removal from flue gas based on direct contact of the gas with SRB and T. denitrificans co-cultures or cultures-in-series has been eliminated as a viable process concept at this time. The technical reasons are as follows: (1) NO inhibition of SO2 reduction by D. desulfuricans - Although the NO concentrations used in the experiments described above are somewhat higher than that found in a typical flue gas, it is quite possible that at lower NO concentrations (or partial pressures) the inhibiting effects will simply take longer to become apparent. (2) Nitrate suppression of NO removal - As noted previously, the cultivation of T. denitrificans in a microbial flue gas treatment system (either one or two stages) would require sulfide-limiting conditions. Therefore, the electron acceptor must be in excess, requiring nitrate in the T. denitrificans process culture. As shown in experiments described above, nitrate significantly suppresses the removal of NO from a feed gas making simultaneous SO2/NOx removal impractical by microbial means. (3) O2 inhibition of SO2 and NO reduction - It has been demonstrated that D. desulfuricans working cultures are tolerant of up to 1.7% O2 in the feed gas. However, further increases in the O2 partial pressure in the feed gas resulted in O2 inhibition of SO2 reduction. These inhibiting levels of O2 are comparable to those concentrations found in flue gases (3). Therefore, in any process in which raw flue gas contacts a D. desulfuricans culture marginal stability at best can be expected.
Book Synopsis Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 3, September 1--November 30, 1991 by :
Download or read book Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 3, September 1--November 30, 1991 written by and published by . This book was released on 1991 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NOXSO Process is a dry, post-combustion flue gas treatment technology which uses a regenerable sorbent to simultaneously adsorb sulfur dioxide and nitrogen oxides from the flue gas of a coal-fired utility boiler. In the process, the SO2 is reduced to elemental sulfur and the NOx is reduced to nitrogen and oxygen. It is predicted that the process can economically remove 90% of the acid rain precursor gases from the flue gas stream in a retrofit or new facility. The objective of the NOXSO Demonstration Project is to design, construct, and operate a flue gas treatment system utilizing the NOXSO Process at Ohio Edisons̀ Niles Plant Unit 1. The effectiveness of the process will be demonstrated by achieving significant reductions in emissions of sulfur and nitrogen oxides. In addition, sufficient operating data will be obtained to confirm the process economics and provide a basis to guarantee performance on a commercial scale. Ohio Edisons̀ Niles Plant Unit 1 generates 115 MW of electricity and 275,000 scfm of flue gas while burning 3.5% sulfur coal.
Book Synopsis Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 12, December 1, 1993--February 28, 1994 by :
Download or read book Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 12, December 1, 1993--February 28, 1994 written by and published by . This book was released on 1994 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NOXSO process is a dry, post-combustion flue gas treatment technology which uses a regenerable sorbent to simultaneously adsorb sulfur dioxide (SO2) and nitrogen oxides (NO3 from the flue gas of a coal-fired utility boiler. In the process, the SO2 is reduced to sulfur by-product and the NO3 is reduced to nitrogen and oxygen. It is predicted that the process can economically remove 90% of the acid rain precursor gases from the flue gas stream in a retrofit or new facility. The objective of the NOXSO Demonstration Project is to design, construct, and operate a flue gas treatment system utilizing the NOXSO process. The effectiveness of the process will be demonstrated by achieving significant reductions in emissions of sulfur and nitrogen oxides. In addition, sufficient operating data will be obtained to confirm the process economics and provide a basis to guarantee performance on a commercial scale. The project is presently in the project definition and preliminary design phase. Data obtained during pilot plant testing which was completed on July 30, 1993 is being incorporated in the design of the commercial size plant. A suitable host site to demonstrate the NOXSO process on a commercial scale is presently being sought. The plant general arrangement has been revised to incorporate principles used in the design of fluidized catalytic cracking (FCC) plants. A NOXSO plant availability analysis was prepared using operating experience from the recently completed pilot plant as a basis. The impact of water desorption in the sorbent heater and water adsorption in the sorbent cooler has been quantified and incorporated into the NOXSO process simulator. NOXSO process economics has been updated based on the present design. Capital cost for a 500 MW plant designed to remove 98% of the SO2 and 85% of the NO3 is estimated at $247/kW.
Download or read book Simultaneous SO2 written by and published by . This book was released on 1994 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proposed research seeks to advance/improve current flue gas cleanup catalyst technology by modifying promising copper-exchanged zeolite NO decomposition catalysts which reduce NO to elemental nitrogen and oxygen in the absence of an added reducing gas. The authors believe that this approach has great potential. Copper on alumina has been investigated by the Pittsburgh Energy Technology Center (PETC) as a NO(subscript x)/SO2 abatement catalyst. Copper on alumina acts as a sorbent for SO2, forming a surface sulfate upon adsorption in an oxygen-containing atmosphere, and as a catalyst for selective catalytic reduction (SCR) of NO(subscript x) using ammonia; both CuO and CuSO4 on the surfaces of these materials are active SCR catalysts. SO2 adsorption in the PETC studies was carried out at 673K, a temperature well within the range for active NO decomposition by the Cu-ZSM-5 catalyst. The authors believe that by beginning with a material which decomposes NO without needing an added reducing gas, they will be able to design a catalyst which will act as a regenerable NO(subscript x)/SO2 abatement catalyst which does not need ammonia to accomplish NO(subscript x) reduction, and which will accomplish SO2 abatement by adsorption, similar to the copper on alumina catalyst. Coupled with a SO2 oxidation catalyst, this successful system will be able to remove both NO(subscript x) and SO2 from flue gases with no added reducing agent and no waste.
Book Synopsis Kurfürstlich. Mainzische Landes-Regierung. Man hat seit einiger Zeit bemerkt, daß mehrere kurfürstliche Aemter von der in den kurfürstlichen Regierungs-Verordnungen deutlich bestimmten Vorschrift gänzlich abweichen, und in den zu erstattenden Berichten sich weder bey dem Hergang, ... aufhalten, noch die Sache in ihr gehöriges Licht stellen, ... sondern sich lediglich auf ältere Berichte ... beziehen ... Mainz den 12ten Junius 1783 by :
Download or read book Kurfürstlich. Mainzische Landes-Regierung. Man hat seit einiger Zeit bemerkt, daß mehrere kurfürstliche Aemter von der in den kurfürstlichen Regierungs-Verordnungen deutlich bestimmten Vorschrift gänzlich abweichen, und in den zu erstattenden Berichten sich weder bey dem Hergang, ... aufhalten, noch die Sache in ihr gehöriges Licht stellen, ... sondern sich lediglich auf ältere Berichte ... beziehen ... Mainz den 12ten Junius 1783 written by and published by . This book was released on 1783 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 10, June 1--August 31, 1993 by :
Download or read book Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 10, June 1--August 31, 1993 written by and published by . This book was released on 1993 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NOXSO process is a dry, post-combustion flue gas treatment technology which uses a regenerable sorbent to simultaneously adsorb sulfur dioxide (SO2) and nitrogen oxides (NOx) from the flue gas of a coal-fired utility boiler. In the process, the SO2 is reduced to sulfur by-product (elemental sulfur, sulfuric acid, or liquid SO2) and the NOx is reduced to nitrogen and oxygen. It is predicted that the process can economically remove 90% of the acid rain precursor gases from the flue gas stream in a retrofit or new facility. The objective of the NOXSO Demonstration Project is to design, construct, and operate a flue gas treatment system utilizing the NOXSO process at Ohio Edisons̀ Niles Plant Unit {number_sign}1. The effectiveness of the process will be demonstrated by achieving significant reductions in emissions of sulfur and nitrogen oxides. In addition, sufficient operating data will be obtained to confirm the process economics and provide a basis to guarantee performance on a commercial scale. The project is presently in the project definition and preliminary design phase. Data obtained during pilot plant testing which was completed on July 30, 1993 is being incorporated in the design of the commercial size plant. A suitable host site to demonstrate the NOXSO process on a commercial scale is presently being sought.
Book Synopsis Simultaneous SO2/NO3 Removal Testing and Toxics Characterization. Milestone Report, Phase 1 by :
Download or read book Simultaneous SO2/NO3 Removal Testing and Toxics Characterization. Milestone Report, Phase 1 written by and published by . This book was released on 1996 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the work completed in the first phase of the Simultaneous SO2/NOx Removal Testing and Toxics Characterization test program. Tasks covered in this report as specified in the Statement of Work included: Task 1.2.0 Equipment Modification and Reagents Procurement; Task 1.3.0 Testing at the 5 kW Scale; Task 1.3.1 Temperature Enhanced Fe(III)EDTA Reduction; Task 1.3.2 Electrolytic Cell Fe(III) EDTA Reduction; Task 1.3.3 Chemical Regeneration Agents Testing; Task 1.3.4 Combination of Strategies; Task 1.4.0 Data Analysis and Phase I Report. Proposed in Task 1.3.4 are combinations of regeneration methods (based on data generated in Tasks 1.3.1 to 1.3.3) that gave the best results at the lowest possible cost. The Test Plan approval (Task 1.1.0) was previously submitted under separate cover.
Book Synopsis Investigation of Combined SO2/NO3 Removal by Ceria Sorbents. Quarterly Technical Progress Report by :
Download or read book Investigation of Combined SO2/NO3 Removal by Ceria Sorbents. Quarterly Technical Progress Report written by and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simultaneous removal of SO2 and NOx using a regenerable solid sorbent will constitute an important improvement over the use of separate processes for the removal of these two pollutants from stack gases and possibly eliminate several shortcomings of the individual SO2 and NOx removal operations. Recent studies at PETC considered cerium oxide as an alternate sorbent to CuO. The present study aims to determine the effects of ammonia on the sulfation of the sorbent and to obtain a rate expression for the regeneration of alumina-supported CeO2 sorbents. In the past quarter the effect of ammonia on sulfation was investigated. It was found that the presence of ammonia affects the sulfation process unfavorably by forming ammonium sulfate species on the surface which subsequently decompose and cause sulfur loss from the surface. Since formation of surface ammonium sulfates increase the sorbent mass, it is difficult to deduce the magnitude of the sulfur loss from the surface only by thermogravimetric analysis.
Book Synopsis Microbial Reduction of SO2 and NO3 as a Means of By-product Recovery/disposal from Regenerable Processes for the Desulfurization of Flue Gas. Technical Progress Report, September 11, 1992--December 11, 1992 by :
Download or read book Microbial Reduction of SO2 and NO3 as a Means of By-product Recovery/disposal from Regenerable Processes for the Desulfurization of Flue Gas. Technical Progress Report, September 11, 1992--December 11, 1992 written by and published by . This book was released on 1992 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the continual increase in the utilization of high sulfur and high nitrogen containing fossil fuels, the release of airborne pollutants into the environment has become a critical problem. The fuel sulfur is converted to SO2 during combustion. Fuel nitrogen and a fraction of the nitrogen from the combustion air are converted to nitric oxide and nitrogen dioxide, NO3 For the past five years Combustion Engineering (now Asea Brown Boveri or ABB) and, since 1986, the University of Tulsa (TU) have been investigating the oxidation of H2S by the facultatively anaerobic and autotrophic bacterium Thiobacillus denitrificans and have developed a process, concept for the microbial removal of H2S from a gas stream the simultaneous removal of SO2 and NO by D. desulfuricans and T. denitrificans co-cultures and cultures-in-series was demonstrated. These systems could not be sustained due to NO inhibition of D. desulfuricans. However, a preliminary economic analysis has shown that microbial reduction of SO2 to H2S with subsequent conversion to elemental sulfur by the Claus process is both technically and economically feasible if a less expensive carbon and/or energy source can be found. It has also been demonstrated that T. denitrificans can be grown anaerobically on NO(g) as a terminal electron acceptor with reduction to elemental nitrogen. Microbial reduction of NO3 is a viable process concept for the disposal of concentrated streams of NO3 as may be produced by certain regenerable processes for the removal of SO2 and NO3 from flue gas.
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