Novel Technologies for SO{sub X}/NO{sub X} Removal from Flue Gas. Technical Report, March 1--May 31, 1995

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Total Pages : 17 pages
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Book Synopsis Novel Technologies for SO{sub X}/NO{sub X} Removal from Flue Gas. Technical Report, March 1--May 31, 1995 by :

Download or read book Novel Technologies for SO{sub X}/NO{sub X} Removal from Flue Gas. Technical Report, March 1--May 31, 1995 written by and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project is to develop a cost-effective low temperature deNOx process. Work done in previous quarters suggested that the best approach for NOx removal between 120 C and 150 C was the catalytic oxidation of NO to NO2, followed by adsorption of NO2 with an effective sorbent. The effort this quarter was concentrated on further evaluation of catalysts for NO oxidation. This included more detailed studies of Co/Al2O3 and searching for other active and stable catalysts. The initial increase and subsequent decline in NO oxidation activity of Co/Al2O3 in the presence of SO2 in the feed was investigated by measuring the dependence of NO oxidation activity on the time of pretreatment in a stream of 0.1% SO2, 4% O2 and 10% H2O. The results suggests that NO oxidation might be effected by SO3 that was formed by the oxidation of SO2, and the subsequent decline in activity might be due to the formation of stable inorganic sulfate. Au/Al2O3 was ineffective for NO oxidation. However, a 5 wt.% Au/Co3O4 catalyst (prepared by co-precipitation with Na2CO3 as the precipitating agent) showed high activity. At a W/F of 0.0071 g-min/cc, and a feed composition of 400 ppm NO and 4% O2, a NO conversion of 45% to NO2 at 200 C was obtained, but no activity was observed at 150 C. When H2O and SO2 were included in the feed, NO conversions between 48%--50% were observed between 120 and 150 C. The enhancement of NO oxidation activity by the presence of SO2 is of particular interest in view of the high sulfur content of the Illinois coal. Furthermore, this activity was stable for the 15 h duration that the catalyst was tested.

Novel Technologies for SO3 NO3 Removal from Flue Gas. Technical Report, March 1, 1994--May 31, 1994

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Total Pages : 23 pages
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Book Synopsis Novel Technologies for SO3 NO3 Removal from Flue Gas. Technical Report, March 1, 1994--May 31, 1994 by :

Download or read book Novel Technologies for SO3 NO3 Removal from Flue Gas. Technical Report, March 1, 1994--May 31, 1994 written by and published by . This book was released on 1994 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project is to develop a cost-effective low temperature deNOx catalyst to be used in the Research Triangle Institute-Waterloo SO2/NOx process for boiler retrofit applications. The performance goal of the catalyst is to convert over 80% of the NO in the flue gas at a temperature as low as 150°C in the presence of 4% O2, and 10% water. Based on the results obtained in the previous quarter, which showed a La-Cu-ZrO2 catalyst to be a promising low temperature catalyst in the presence of 2% H2O in the reduction of NO to N2 with isobutanol, research was conducted to investigate the variations in feed conditions on the performance of the catalyst. Specifically, the effect of increased H2O concentration and the effect of NO2 in the feed were investigated. Although the activity of the catalyst declined when the H2O concentration was increased from 2 to 10%, the decline was relatively mild compared with that when the water content was changed from 0 to 2%. The effect of NO2 was investigated because oxidation of NO to NO2, a thermodynamically favorable process, proceeds at a finite rate even in the absence of a catalyst. It was found that, under the low temperature reaction conditions, replacement of NO2 with NO did not affect the catalytic performance of the La-Cu-ZrO2 catalyst. Besides studying the La-Cu-ZrO2 catalyst, effort has continued in screening other potential catalysts. A promising 5%Cu-2%Ag catalyst supported on active carbon was found that catalyzes NO reduction by acetone. At 150°C, 35% NO conversion was obtained in the presence of 4% O2 and 8% H2O at a space velocity of 3000 h−1 after 5 h on stream.

Combined Removal of SOsub X and NOsub X from Flue Gas Using Non-thermal Plasma

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Book Synopsis Combined Removal of SOsub X and NOsub X from Flue Gas Using Non-thermal Plasma by :

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:

Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report

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Book Synopsis Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report by :

Download or read book Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this work is to develop a novel system for regenerable SO[sub 2] and NO[sub x] scrubbing of flue gas that focuses on (1) a novel method for regeneration of spent SO[sub 2] scrubbing liquor and (2) novel chemistry for reversible absorption of NO[sub x]. In addition, high efficiency hollow fiber contactors (HFC) are proposed as the devices for scrubbing the SO[sub 2] and NO[sub x] from the flue gas. The system will be designed to remove more than 95% of the SO[sub x] and more than 75% of the NO[sub x] from flue gases typical of pulverized coal-fired power plants at a cost that is at least 20% less than combined wet limestone scrubbing of SO[sub x] and selective catalytic reduction of NO[sub x]. In addition, the process will make only marketable byproducts, if any (no waste streams). Our approach is to reduce the capital cost by using high efficiency hollow fiber devices for absorbing and desorbing the SO[sub 2] and NO[sub x]. We will also introduce new process chemistry to minimize traditionally well-known problems with SO[sub 2] and NO[sub x] absorption and desorption. For example, we will extract the SO[sub 2] from the aqueous scrubbing liquor into an oligomer of dimethylaniline to avoid the problem of organic liquid losses in the regeneration of the organic liquid. Our novel chemistry for scrubbing NO[sub x] will consist of water soluble phthalocyanine compounds invented by SRI and also of polymeric forms of Fe[sup++] complexes similar to traditional NO[sub x] scrubbing media. Finally, the arrangement of the absorbers is in cassette (stackable) form so that the NO[sub x] absorber can be on top of the SO[sub x] absorber. This cassette (stacked) arrangement makes it possible for the SO[sub 2] and NO[sub x] scrubbing chambers to be separate without incurring the large ducting and gas pressure drop costs necessary if a second conventional absorber vessel were used.

Combined Removal of SO(subscript X) and NO(subscript X) from Flue Gas Using Non-thermal Plasma. Technical Report, March 1--May 31, 1995

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Total Pages : 13 pages
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Book Synopsis Combined Removal of SO(subscript X) and NO(subscript X) from Flue Gas Using Non-thermal Plasma. Technical Report, March 1--May 31, 1995 by :

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.

Separation of Flue-gas Scrubber Sludge Into Marketable Products. Second Year, Third Quarterly Technical Progress Report, March 1, 1995- May, 31, 1995

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Book Synopsis Separation of Flue-gas Scrubber Sludge Into Marketable Products. Second Year, Third Quarterly Technical Progress Report, March 1, 1995- May, 31, 1995 by :

Download or read book Separation of Flue-gas Scrubber Sludge Into Marketable Products. Second Year, Third Quarterly Technical Progress Report, March 1, 1995- May, 31, 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Novel Technologies for SO3 NO3 Removal from Flue Gas. [Quarterly] Technical Report, December 1, 1993--February 28, 1994

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Total Pages : 21 pages
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Book Synopsis Novel Technologies for SO3 NO3 Removal from Flue Gas. [Quarterly] Technical Report, December 1, 1993--February 28, 1994 by :

Download or read book Novel Technologies for SO3 NO3 Removal from Flue Gas. [Quarterly] Technical Report, December 1, 1993--February 28, 1994 written by and published by . This book was released on 1994 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project is to develop a cost-effective low temperature deNOx catalyst to be used in the Research Triangle Institute-Waterloo SOx/NOx process for boiler retrofit applications. The performance goal of the catalyst is to convert over 80% of the NO in the flue gas at a temperature as low as 150°C in the presence of 4% O2 and 10% water. Based on the results obtained in the first quarter, which showed that modification of a Cu-ZrO2 catalyst with Nd increased the conversion of NO to N2, especially at higher partial pressures of oxygen, and that ethanol was a more effective reductant than propene in the presence of water vapor, research was conducted in this quarter to investigate the use of other modifiers and other alcohols as reductants. It was found that modification of Cu-ZrO2 by La was more effective than by Nd or Gd. It decreased the hydrocarbon combustion activity of the catalyst while increasing the NO conversion. A Cu-Ga2O3 catalyst was also tested. It was superior to Cu-ZrO2 at temperatures higher than 250°C, but inferior at lower temperatures. On the La-Cu-ZrO2 catalyst, isobutanol was a very effective reductant for NO, being more effective than ethanol. In the presence of 4% O2, 2% water, and with a space velocity of 3000 h−1, an NO conversion to N2 of 83% was obtained using 1200 ppM isobutanol at 200°C. This is believed to be the highest conversion reported to data without using NH3 as the reductant. Other catalysts not containing copper were also tested, but their performance was inferior to this La-Cu-ZrO2 catalyst.

Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report Number 13, April--June 1995

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ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report Number 13, April--June 1995 by :

Download or read book Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report Number 13, April--June 1995 written by and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this work is to develop a novel system for regenerable SO2 and NO(subscript x) scrubbing of flue gas that focuses on (a) a novel method for regeneration of spent SO2 scrubbing liquor and (b) novel chemistry for reversible absorption of NO(subscript x). In addition, high efficiency hollow fiber contactors (HFC) are proposed as the devices for scrubbing the SO2 and NO(subscript x) from the flue gas. The system will be designed to remove more than 95% of the SO(subscript x) and more than 75% of the NO(subscript x) from flue gases typical of pulverized coal-fired power plants at a cost that is at least 20% less than combined wet limestone scrubbing of SO(subscript x) and selective catalytic reduction of NO(subscript x). In addition, the process will make only marketable byproducts, if any (no waste streams). Work will be conducted in a 60-month period (5/92 to 4/97), encompassing 16 tasks. In Task 8, (Integrated NO(subscript x) life tests), the authors have presented the modified experimental arrangement for testing the efficacy of Co(II)-phthalocyanine solution for NO(subscript x) absorption as well as desorption over extended periods of time. This arrangement allows them to automatically acquire data and control process parameters. They obtained absorption/desorption data over a period of 140 hours. The data exhibits average NO removal rates of 50%. In order to increase the overall efficiency of the system, they have designed and built a new desorption section with increased mass transfer area. In Task 9, (scalable modules), the authors presented the design details of the rectangular scalable modules. Also, they tested the apparatus with SO2/water system. The performance of the device was affected by varying either gas or water flow rates. SO2 removal rates close to 90% were obtained at 20 SLPM gas flow rates.

Plasma-assisted Cleanup of Flue Gas. [Quarterly] Technical Report, March 1, 1993--May 31, 1993

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ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Plasma-assisted Cleanup of Flue Gas. [Quarterly] Technical Report, March 1, 1993--May 31, 1993 by :

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.

Reichs-Hoff-Rahts Gutachten/ über das der Stadt Hamburg ertheiltes Decretum Rat. Sessionis & Voti 18. Novemb. Anno 1643

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Book Synopsis Reichs-Hoff-Rahts Gutachten/ über das der Stadt Hamburg ertheiltes Decretum Rat. Sessionis & Voti 18. Novemb. Anno 1643 by :

Download or read book Reichs-Hoff-Rahts Gutachten/ über das der Stadt Hamburg ertheiltes Decretum Rat. Sessionis & Voti 18. Novemb. Anno 1643 written by and published by . This book was released on 1643 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Commercial Demonstration of the NOXSO SO[sub 2]/NO[sub X] Removal Flue Gas Cleanup System. Quarterly Technical Progress Report, No. 14, June 1, 1994--August 31, 1994

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Book Synopsis Commercial Demonstration of the NOXSO SO[sub 2]/NO[sub X] Removal Flue Gas Cleanup System. Quarterly Technical Progress Report, No. 14, June 1, 1994--August 31, 1994 by :

Download or read book Commercial Demonstration of the NOXSO SO[sub 2]/NO[sub X] Removal Flue Gas Cleanup System. Quarterly Technical Progress Report, No. 14, June 1, 1994--August 31, 1994 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the NOXSO Demonstration Project (NDP), with cost-shared funding support from DOE, is to design, construct, and operate a commercial-scale flue gas cleanup system utilizing the NOXSO process. The NDP consists of the NOXSO plant and sulfur recovery unit, designed to remove SO[sub 2] and NO[sub x] from flue gas and produce elemental sulfur by-product, and the liquid SO[sub 2] plant and air separation unit, designed to process the elemental sulfur into liquid SO[sub 2]. The NOXSO plant and sulfur recovery unit will be constructed at ALCOA Generating Corporation's (AGC) Warrick Power Plant near Evansville, Indiana, and will treat all of the flue gas from the 150-MW Unit 2 boiler. The elemental sulfur produced will be shipped to the Olin Charleston Plant in Charleston, Tennessee, for conversion into liquid SO[sub 2].

An Experimental Study of NOsub X Recycle in the NOXSO Flue Gas Cleanup Process. Quarterly Technical Progress Report, April 1-June 31, 1992

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Book Synopsis An Experimental Study of NOsub X Recycle in the NOXSO Flue Gas Cleanup Process. Quarterly Technical Progress Report, April 1-June 31, 1992 by :

Download or read book An Experimental Study of NOsub X Recycle in the NOXSO Flue Gas Cleanup Process. Quarterly Technical Progress Report, April 1-June 31, 1992 written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 9, March 1--May 31, 1993

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Total Pages : 14 pages
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Book Synopsis Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 9, March 1--May 31, 1993 by :

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.

An Experimental Study of NOsub X Recycle in the NOXSO Flue Gas Cleanup Process. Quarterly Technical Progress Report, October 1-December 31, 1992

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Book Synopsis An Experimental Study of NOsub X Recycle in the NOXSO Flue Gas Cleanup Process. Quarterly Technical Progress Report, October 1-December 31, 1992 by :

Download or read book An Experimental Study of NOsub X Recycle in the NOXSO Flue Gas Cleanup Process. Quarterly Technical Progress Report, October 1-December 31, 1992 written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 5, March 1--May 31, 1992

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Total Pages : 16 pages
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Book Synopsis Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 5, March 1--May 31, 1992 by :

Download or read book Commercial Demonstration of the NOXSO SO2/NO3 Removal Flue Gas Cleanup System. Quarterly Technical Progress Report No. 5, March 1--May 31, 1992 written by and published by . This book was released on 1992 with total page 16 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. This 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.

A Novel Carbon-based Process for Flue Gas Cleanup. Seventh Quarterly Technical Progress Report, January 1--March 31, 1993

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Total Pages : 46 pages
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Book Synopsis A Novel Carbon-based Process for Flue Gas Cleanup. Seventh Quarterly Technical Progress Report, January 1--March 31, 1993 by :

Download or read book A Novel Carbon-based Process for Flue Gas Cleanup. Seventh Quarterly Technical Progress Report, January 1--March 31, 1993 written by and published by . This book was released on 1993 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project is to demonstrate the preliminary technical and economic feasibility of a novel carbon-based process for removal of at least 95 % SO2, and at least 75 % NO(subscript x) from coal combustion flue gas. In the process, flue gas leaving the electrostatic precipitator (ESP) is passed through a trickle bed of activated carbon catalyst employing a periodic flush of low strength sulfuric acid. The SO2 is oxidized to SO3 and removed as medium strength sulfuric acid. The SO2-free flue gas is then mixed with NH3, and the NO(subscript x) in the gas is subjected to selective catalytic reduction (SCR) to N2 over a fixed bed of activated carbon catalyst. In the previous six quarters, detailed project plans were prepared and experimental systems were commissioned. The SO2 removal factorial experiments with BPL carbon at 21°C are well underway at Waterloo. A modified carbon catalyst (MCCI) showed up to 99% SO2 removal in the presence of NO(subscript x) over 10 multiple cycles at 80--130°C and 1400 scc/cc/h. Several catalysts were evaluated for NO(subscript x) removal also. Promising modified carbon catalysts (MCCI, II and III) were tested. Some of these catalysts showed the potentialfor over 80% NO(subscript x) removal at space velocities as high as 3000 scc/cc/h. Poisoning of NO(subscript x) removal efficiency with SO2 in the feed was also studied. With over 100 ppm SO2 in feed, NO(subscript x)removal efficiency remained steady for several hours. It declined from 79% removal to 66% removal over 24 hours. NO(subscript x) removal experiments were performed with 5 different materials and the SO2 removalactivity of 2 catalysts was tested.

Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report

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ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report by :

Download or read book Advanced Separation Technology for Flue Gas Cleanup. Quarterly Technical Report written by and published by . This book was released on 1995 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this work is to develop a novel system for regenerable SO2 and NO(subscript x) scrubbing of flue gas that focuses on (a) a novel method for regeneration of spent SO2 scrubbing liquor and (b) novel chemistry for reversible absorption of NO(subscript x). In addition, high efficiency hollow fiber contactors (HFC) are proposed as the devices for scrubbing the SO2 and NO(subscript x) from the flue gas. The system will be designed to remove more than 95% of the SO(subscript x) and more than 75% of the NO(subscript x) from flue gases typical of pulverized coal-fired power plants at a cost that is at least 20% less than combined wet limestone scrubbing of SO(subscript x) and selective catalytic reduction NO(subscript x). In addition, the process will make only marketable byproducts, if any (no waste streams). During the third quarter of 1995, we continued work on Task 8, integrated NO(subscript x) life tests. We also obtained some mass transfer data on Task 9, performance of scalable modules. In Task 8, we gathered additional 400 hours of NO(subscript x) absorption/desorption data. We also presented the data on NO(subscript x) absorption/desorption behavior over cumulative time to date. the performance indicates unchanged reversible characteristics of Co(II) phthalocyanine solution. Therefore, we believe that NO(subscript x) absorption/desorption chemistry is robust. In Task 9, we experimentally observed the channeling of liquid flow due to poor design of previous rectangular modules. Newly obtained welded rectangular modules out-performed previous modules. We also presented SO2 absorption data using different Na2SO3 concentrations. The SO2 absorption seem to be dependent on liquid flow rate, a rather surprising result compared to earlier results. Apparatus for combined absorption/desorption of SO2 in rectangular modules is also given in this report.