Download or read book Simultaneous SO2 NO3 Abatement Using Zeolite supported Copper Progress Report October 1 1993 September 30 1994 written by and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of this project have evolved from an investigation of ways of preparing Li and Halls̀ Cu-ZSM-5 catalyst using new methods to yield a more robust catalyst, into an investigation of modified Cu-ZSM-5 catalysts for the simultaneous reduction of NO and oxidation of SO2. This was not a conscious effort or decision on the part of the investigators, but resulted from a natural evolution of the project. The authors have developed a zeolite synthesis and characterization capability in the group and have prepared impregnated test materials for the investigation of different catalyst precursors. They have prepared different vanadium-impregnated aluminas, for evaluation of the impregnation method, and have succeeded in reproducing the results of Li and Halls̀ Cu-ZSM-5 catalyst. This report reviews the progress during the first three quarters of the year, and includes progress from the last quarter. Results are discussed for the Raman spectroscopy of precursors; infrared spectroscopy of vanadium-impregnated alumina; zeolite overlayer on cordierite; reactivity of Cu-ZSM-5; and impregnation of vanadyl acetylacetonate on alumina.
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.
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.
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.
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+.
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.
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:
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 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.
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.
Download or read book Commercial Demonstration of the NOXSO SO2 NO3 Removal Flue Gas Cleanup System Quarterly Technical Progress Report No 13 March 1 1994 May 31 1994 written by and published by . This book was released on 1994 with total page 43 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 converted to a sulfur by-product and the NO3 is converted 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 activities involved evaluating various design options for the major process vessels with the principal focus being on the sorbent heater vessel, which is operated at the highest temperature. Additionally, the impact of the NOXSO system on power plant particulate emissions and opacity was estimated. It is predicted that particulate emissions will decrease slightly while opacity will increase slightly. Neither change will be significant enough to have an impact on emissions compliance. Advertised performance of the proposed adsorber separator is being verified by laboratory testing. Process studies activities included POC equipment inspection and materials evaluations.
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.
Download or read book Excerpts from the Derby and Chesterfield Reporter written by and published by . This book was released on 1973* with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Commercial Demonstration of the NOXSO SO2 NO3 Removal Flue Gas Cleanup System Quarterly Technical Progress Report No 9 March 1 May 31 1993 written by and published by . This book was released on 1993 with total page 14 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 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 {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. Ohio Edisons̀ Niles Plant Unit {number_sign}1 generates 115 MW of electricity and 275,000 scfm of flue gas while burning 3.5% sulfur coal. The project is presently in the project definition and preliminary design phase. This phase was included in the project to allow completion of process studies and preliminary activities which could be conducted in parallel with NOXSOs̀ pilot plant project being conducted at Ohio Edisons̀ Toronto Power Plant.
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.
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.
