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Bench Scale Demonstration Of Hot Gas Desulfurization Technology Quarterly Report April 1 June 30 1996
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Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, April 1 - June 30, 1996 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, April 1 - June 30, 1996 written by and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The US Department of Energy (DOE) Morgantown Energy Technology Center (METC) is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal gas) streams of integrated gasification combined-cycle (IGCC) power systems. The programs focus on hot-gas particulate removal and desulfurization technologies that match or nearly match the temperatures and pressures of the gasifier, cleanup system, and power generator. The work seeks to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs. The goal of this project is to continue further development of the zinc titanate desulfurization and direct sulfur recovery process (DSRP) technologies by (1) scaling up the zinc titanate reactor system; (2) developing an integrated skid-mounted zinc titanate desulfurization-DSRP reactor system; (3) testing the integrated system over an extended period with real coal-as from an operating gasifier to quantify the degradative effect, if any, of the trace contaminants present in cola gas; (4) developing an engineering database suitable for system scaleup; and (5) designing, fabricating and commissioning a larger DSRP reactor system capable of operating on a six-fold greater volume of gas than the DSRP reactor used in the bench-scale field test. The work performed during the April 1 through June 30, 1996 period is described.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, July 1, 1994-September 30, 1994 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, July 1, 1994-September 30, 1994 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bench-scale Demonstration of Hot Gas Desulfurization Technology. Quarterly Report, January 1995-March 1995 by :
Download or read book Bench-scale Demonstration of Hot Gas Desulfurization Technology. Quarterly Report, January 1995-March 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, October 1 - December 31, 1995 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, October 1 - December 31, 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 US Department of Energy (DOE) Morgantown Energy Technology Center (METC) is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal gas) streams of integrated gasification combined-cycle (IGCC) power systems. The programs focus on hot-gas particulate removal and desulfurization technologies that match or nearly match the temperatures and pressures of the gasifier, cleanup system, and power generator. The work seeks to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs. The goal of this project is to continue further development of the zinc titanate desulfurization and direct sulfur recovery process (DSRP) technologies by (1) scaling up the zinc titanate reactor system; (2) developing an integrated skid-mounted zinc titanate desulfurization-DSRP reactor system; (3) testing the integrated system over an extended period with real coal-gas from an operating gasifier to quantify the degradative effect, if any, of the trace contaminants present in coal gas; (4) developing an engineering database suitable for system scaleup; and (5) designing, fabricating and commissioning a larger DSRP reactor system capable of operating on a six-fold greater volume of gas than the DSRP reactor used in the bench-scale field test. The work performed during the October 1 through December 31, 1995 is described.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, January 1--March 31, 1994 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, January 1--March 31, 1994 written by and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Department of Energy (DOE), Morgantown Energy Technology Center (METC), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal gas) streams of integrated gasification combined-cycle (IGCC) power systems. Through bench-scale development, both fluidized-bed zinc titanate and Direct Sulfur Recovery Process (DSRP) technologies have been shown to be technically and economically attractive. In the zinc titanate approach, sulfur dioxide is the produced and must be disposed of in an environmentally sound manner. In the DSRP, elemental sulfur is the catalytic product.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, July 1, 1993--September 30, 1993 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, July 1, 1993--September 30, 1993 written by and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The US Department of Energy (DOE), Morgantown Energy Technology Center (METC), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal gas) streams of integrated gasification combined-cycle (IGCC) power systems. The programs focus on hot-gas particulate removal and desulfurization technologies that match or nearly match the temperatures and pressures of the gasifier, cleanup system, and power generator. The purpose is to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs. Hot-gas desulfurization research has focused on regenerable mixed-metal oxide sorbents which can reduce the sulfur in coal gas to less than 20 ppmv and can be regenerated in a cyclic manner with air for multicycle operation. Zinc titanate (Zn2TiO4 or ZnTiO3), formed by a solid-state reaction of zinc oxide (ZnO) and titanium dioxide (TiO2), is currently the leading sorbent. The sulfidation/regeneration cycle can be carried out in fixed-bed, moving-bed, or fluidized-bed reactor configuration, and all three types of reactors are slated for demonstration in the DOE Clean Coal Technology program. The fluidized-bed reactor configuration is most attractive because of several potential advantages including faster kinetics and the ability to handle the highly exothermic regeneration to produce a regeneration offgas containing a constant concentration of SO2.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, July 1 - September 30, 1995 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, July 1 - September 30, 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: The goal of this project is to continue further development of the zinc titanate desulfurization and Direct Sulfur Recovery (DSRP) technologies by: scaling up the zinc titanate reactor system; developing an integrated skid-mounted zinc titanate desulfurization-DSRP reactor system; testing the integrated system over an extended period with real coal-gas from an operating gasifier to quantify the degradative effect, if any, of the trace contaminants present in coal gas; developing an engineering database suitable for system scaleup; and designing, fabricating and commissioning a larger DSRP reactor system capable of operating on a six-fold greater volume of gas than the DSRP reactor used in the bench-scale field test. This report discusses the field testing of the Zinc Titanate Fluid Bed Desulfurization/DSRP at the Morgantown Energy Technology Center.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, January 1--March 31, 1998 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, January 1--March 31, 1998 written by and published by . This book was released on 1998 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the start of the current project, the DSRP (Direct Sulfur Recovery Process) technology was at the bench-scale development stage with a skid-mounted system ready for field testing. The process had been extended to fluidized-bed operation in the Stage 1 reactor. A preliminary economic study for a 100 MW plant in which the two-stage DSRP was compared to conventional processes indicated the economic attractiveness of the DSRP. Through bench-scale development, both fluidized-bed zinc titanate and DSRP technologies have been shown to be technically and economically attractive. The demonstrations prior to the start of this project, however, had only been conducted using simulated (rather than real) coal gas and simulated regeneration off-gas. Thus, the effect of trace contaminants in real coal gases on the sorbent and DSRP catalyst was not known. Also, the zinc titanate desulfurization unit and DSRP had not been demonstrated in an integrated manner. The overall goal of this project is to continue further development of the zinc titanate desulfurization and DSRP technologies by scale-up and field testing (with actual coal gas) of the zinc titanate fluidized-bed reactor system, and the Direct Sulfur Recovery Process.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, October 1--December 31, 1993 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Technical Progress Report, October 1--December 31, 1993 written by and published by . This book was released on 1994 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Triangle Institute (RTI) with DOE/METC sponsorship has been developing zinc titanate sorbent technology since 1986. In addition, RTI has been developing the Direct Sulfur Recovery Process (DSRP) with DOE/METC sponsorship since 1988. Fluidized-bed zinc titanate desulfurization coupled to the DSRP is currently the most advanced and attractive technology for sulfur removal/recovery for IGCC systems, and it has recently been proposed in a Clean Coal Technology project. The goal of this project is to continue further development of the zinc titanate desulfurization and DSRP technologies by: scaling up the zinc titanate reactor system; developing an integrated skid-mounted zinc titanate desulfurization-DSRP reactor system; testing the integrated system over an extended period with real coal-gas from an operating gasifier to quantify the degradative effect, if any, of the trace contaminants present in coal gas; developing an engineering database suitable for system scaleup; and designing, fabricating and commissioning a larger DSRP reactor system capable of operating on a six-fold greater volume of gas than the DSRP reactor used in the bench-scale field test. During this reporting period the Construction Permit Application was completed and approved by the Process Safety Committee, and a final revised Application has been submitted to DOE/METC. A draft Test Plan for the field test was formulated. Finally, progress was made in the reactor system fabrication with the submission of purchase orders for nearly all major equipment, and with the final design of the trailer (mobile laboratory).
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, October 1 - December 31, 1994 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. Quarterly Report, October 1 - December 31, 1994 written by and published by . This book was released on 1994 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Department of Energy (DOE), Morgantown Energy Technology Center (METC), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal gas) streams of integrated gasification combined-cycle (IGCC) power systems. The programs focus on hot-gas particulate removal and desulfurization technologies that match or nearly match the temperatures and pressures of the gasifier, cleanup system, and power generator. The work seeks to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs. Hot-gas desulfurization research has focused on regenerable mixed-metal oxide sorbents which can reduce the sulfur in coal gas to less than 20 ppmv and can be regenerated in a cyclic manner with air for multicycle operation. Zinc titanate (Zn2TiO4 or ZnTiO3), formed by a solid-state reaction of zinc (ZnO) and titanium dioxide (TiO2), is currently one of the leading sorbents. This report summarizes the highlights and accomplishments of the October slipstream test run of the Zinc Titanate Fluid Bed Desulfurization/Direct Sulfur Recovery Process (ZTFBD/DSRP) Mobile Laboratory at the Department of Energy's Morgantown Energy Technology Center. Although the run had to be shortened due to mechanical problems with METC's gasifier, there was sufficient on-stream time to demonstrate highly successful operation of both the zinc titanate fluid bed desulfurization and the DSRP with actual coal gas.
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bench-scale Demonstration of Hot-gas Desulfurization Technology. First Quarterly Report, 1997 by :
Download or read book Bench-scale Demonstration of Hot-gas Desulfurization Technology. First Quarterly Report, 1997 written by and published by . This book was released on 1997 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Department of Energy (DOE), Federal Energy Technology Center (FETC), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal-derived fuel-gas) streams of integrated gasification combined-cycle (IGCC) power systems. The hot gas cleanup work seeks to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs. Hot-gas desulfurization research has focused on regenerable mixed-metal oxide sorbents that can reduce the sulfur in coal-derived fuel-gas to less than 20 ppmv and can be regenerated in a cyclic manner with air for multicycle operation. Zinc titanate (Zn2TiO4 or ZnTiO3), formed by a solid-state rea of zinc oxide (ZnO) and titanium dioxide (TiO2), is currently one of the leading sorbents.
Book Synopsis Advanced Sulfur Control Concepts in Hot Gas Desulfurization Technology. Quarterly Report, April 1--June 30, 1996 by :
Download or read book Advanced Sulfur Control Concepts in Hot Gas Desulfurization Technology. Quarterly Report, April 1--June 30, 1996 written by and published by . This book was released on 1997 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental effort during the past quarter was restricted to the fixed-bed reactor. Effort during April was devoted to the sulfidation and regeneration of cerium oxide. Sulfidation tests were plagued by over-sulfidation, i.e., the quantity of H2S removed from the gas phase exceeded the stoichiometric amount associated with the conversion of CeO2 to Ce2O2S. This was initially attributed to the formation of Ce2S3 which was found to be thermodynamically possible in the highly reducing feed gas. However, the addition of steam to the feed gas to prevent Ce2S3 formation did not eliminate the over-sulfidation problem. Later tests indicated that the apparent over-sulfidation was due to reaction between H2S and the walls of the reaction vessel. Apparently the alonizing treatment to passivate the reactor walls was either ineffective at the reaction conditions or had deteriorated with use to the point that protection was no longer viable. Limited Ce2O2S regeneration results, although very qualitative, were quite favorable. In one regeneration test in an O2-N2 atmosphere, no SO2 or H2S were detected by the chromatograph in the regeneration product. Significant amounts of total sulfur were detected, and the test had to be terminated prematurely when elemental sulfur caused the product line leading to the chromatograph to plug. Experimental tests during May and June examined the regeneration of FeS as a function of temperature, gas feed composition, and gas flow rate. Complete regeneration was achieved with as much as 75% of the sulfur liberated in elemental form. Low regeneration temperature and large ratios of H2O to O2 in the feed gas promote the formation of elemental sulfur. A number of changes in the reactor system were made during the quarter, including improvements to the sulfur condenser and filters on the reactor product line leading to the gas chromatograph.
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 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Sulfur Control Concepts for Hot-gas Desulfurization Technology. Quarterly Report, July 1 - September 30, 1996 by :
Download or read book Advanced Sulfur Control Concepts for Hot-gas Desulfurization Technology. Quarterly Report, July 1 - September 30, 1996 written by and published by . This book was released on 1996 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective is to determine the feasibility of an alternate concept for the regeneration of high temperature desulfurization sorbents in which elemental sulfur, instead of SO2 is produced. Iron and cerium-based sorbents were chosen on the basis of thermodynamic analysis to determine the feasibility of elemental sulfur production. Experimental effort on the regeneration of FeS using the partial oxidation concept was completed during the quarter, and attention returned to the sulfidation of CeO2 and regeneration of Ce2O22S. Progress was made in the process simulation effort involving two-step desulfurization using CeO2 to remove the bulk of the H2S followed by a zinc-titanate polishing step. The simulation effort includes regeneration of Ce2O2S using two concepts - reaction with SO2 reaction with H2O. Elemental sulfur is formed directly in the reaction with SO2 while H2S is the product of the regeneration reaction with steam. Steam regeneration is followed by a Claus process to convert the H2S to elemental sulfur. The last test involving partial oxidation regeneration of FeS was completed in early July. Experimental problems were encountered throughout this phase of the program, primarily associated with erratic readings from the total sulfur analyzer. The problems are attributed to variable flow rates through the capillary restrictor, and, in some cases, to steam concentrations which exceeded the capacity of the membrane dryer. Nevertheless, sufficient data was collected to confirm that large fractions of the sulfur in FeS could be liberated in elemental form. Low regeneration temperature ((approximately)600°C), large steam-to-oxygen ratios, and low space velocities were found to favor elemental sulfur production.
Book Synopsis Advanced Sulfur Control Concepts in Hot-gas Desulfurization Technology. Quarterly Report, April 1--June 30, 1998 by :
Download or read book Advanced Sulfur Control Concepts in Hot-gas Desulfurization Technology. Quarterly Report, April 1--June 30, 1998 written by and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-five reduction/sulfidation tests plus one sulfidation/regeneration test were completed during the quarter. The reduction/sulfidation tests examined the behavior of six cerium oxide sorbents from different sources with reaction variables of temperature, pressure, gas composition and flow rate. Most significantly, steam was added to the sulfidation feed gas for the first time. Tests using pre-reduced sorbents and tests in which reduction and sulfidation occurred simultaneously were performed. Prebreakthrough H2S concentrations less than 10 ppmv were obtained over a range of reaction conditions with prebreakthrough concentrations as low as 1 ppmv achieved at the most favorable conditions. The general response to reaction variables was as expected except when feed rate was varied. In some of these cases the FPD breakthrough time did not correspond to expectation. The single regeneration run was conducted at 600 C and 2 atm using 12% SO2 in N2 at a feet rate of 400 sccm. This was the first regeneration test at other than 1 atm pressure; favorable results were obtained. The only experimental objective remaining is additional high pressure regeneration testing.
