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1 edition of Fundamental studies of calcium based sorbents for SO2 control from coal-fired boilers found in the catalog.

Fundamental studies of calcium based sorbents for SO2 control from coal-fired boilers

Fundamental studies of calcium based sorbents for SO2 control from coal-fired boilers

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Published by U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory in Research Triangle Park, NC .
Written in English

    Subjects:
  • Coal-fired furnaces -- Environmental aspects,
  • Sorbents -- Testing,
  • Sulfur dioxide -- Measurement

  • Edition Notes

    StatementJ.A. Cole ... [et al.]
    ContributionsCole, J. A. 1955-, Air and Energy Engineering Research Laboratory
    The Physical Object
    Pagination5 p. :
    ID Numbers
    Open LibraryOL14648516M

    Mercury control by injection of powdered activated carbon sorbents is the leading method for direct control of mercury from coal combustion gas streams. There are many PAC sorbent products on the market and the properties of these products vary. “Bench Scale Combustion Studies of SOx Formation and Control,” U.S. EPA Grant R, 7/26/81 - 7/25/83 $, “Minimization of NOx Emissions from Multi-burner Coal-Fired Boilers,” DOE, 9/97 - 9/00 $, and D.W. Pershing, “Increased SO2 Removal with the Addition of Alkali Metals and Chromium to Calcium Based Sorbents.

    The book serves as an ideal reference for researchers, engineers, academia and graduate students, plant operators, boiler manufacturers, component suppliers, and technical managers who work on fluidized bed combustion technology development and application. Guangxi Yue is a professor at the Department of Thermal Engineering, Tsinghua University. experiments. It is a pulverized-coal-fired furnace that was designed to simulate combustion in low emission, pulverized-coal-fired boilers. This unit has been used for many investigations of technologies for NOx and particulate control, including: staging, reburning, SNCR and burner development. The.

    The post-combustion calcium looping process, CaL, is one of the most promising new CO2 capture processes. It has rapidly developed from small scale pilot testing facility5,6,7,8,9,10,11 to a large pilot plant of up to MW t as part of the CaOling project 12 and a second pilot plant of 1 MWt is already reporting positive results. 13 These post-. E xperimental Study of Calcium-Based Sorbent Reactivities in a Drop Tube Reactor. Proceedings, EPRI/DOE/EPA SO2 Control Symposium. J.F. Sanders, T.C. Keener and J. Wang (). F ly Ash Hydration With Quicklime for Improving Sorbent Utilization and SO2 Removal in Spray Dryer Absorbers. Proceedings, EPRI/DOE/EPA SO2 Control Symposium.


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Fundamental studies of calcium based sorbents for SO2 control from coal-fired boilers Download PDF EPUB FB2

Get this from a library. Fundamental studies of calcium based sorbents for SO₂ control from coal-fired boilers. [J A Cole; Air and Energy Engineering Research Laboratory.;].

EPA/R February Fundamentals of Mercury Speciation and Control in Coal-Fired Boilers Prepared By: S. Behrooz Ghorishi ARCADIS Geraghty & Miller, Inc. Prospectus Drive P.O. Box Research Triangle Park, NC EPA Contract No. D Work Assignment EPA Work Assignment Manager: Chun Wai Lee Air Pollution Prevention and Control Division National.

CO 2 is concurrently captured by the calcium-based sorbents. Similar to the ZECA and ALSTOM processes, here the depletion of CO 2 drives the WGS reaction toward producing H 2. Moreover, sulfur in the coal is captured by the same calcium-based sorbent-forming CaSO 3.

As a result, a high-purity H 2 stream is obtained from the gasifier [93]. The paper discusses studies, relating to air pollution control from coal-fired utility boilers, that show that the primary variable affecting sorbent reactivity at high temperature or at low temperature with water droplets is surface area.

For the development of high surface area during furnace injection, some limestones appear to be superior to others and can be selected accordingly.

Specific tasks include work on calcium-based sulfur removal system studies (e.g. sorption kinetics, regeneration, attrition, modeling), alternative sulfur sorbents, nitrogen oxide emissions, particulate emissions and control, trace element emissions and control, spent sorbent and ash disposal and systems evaluation (e.g.

impact of new source. thesis focused on the performance of Ca- Na- and K-based dry-injected sorbents in reducing the SO2 emissions from the flue gases of a high sulfur coal.

In this thesis, different sorbents, such as potassium-based, calcium-based, sodium-based and magnesium-based sorbents, were blended with coal and injected in a high-temperatureFile Size: 1MB.

In an investigation of in situ CO2 removal for fluidized-bed combustion processes, seven calcium-based sorbents were tested for simultaneous CO2 and SO2 removal using both an atmospheric thermogravimetric reactor and a pressurized thermogravimetric analyzer.

SO2 was found to impede cyclic CO2 capture because of pore blockage by sulfate products, resulting primarily from direct sulfation Cited by: Novel sorbents for mercury emissions control from coal-fired power plants Article in Journal of the Chinese Institute of Chemical Engineers 39(2) March with Reads.

Laboratory studies were conducted to develop an elemental mercury (Hg0) removal process based on the reaction of H2S and Hg0 using iron-based sorbents for coal derived fuel gas. Studies of the Fate of Sulfur Trioxide in Coal-Fired Utility Boilers Based on Modified Selected Condensation Methods and then declined in other air pollutant control device (APCD) modules downstream to approximately 5 ppmv and 15 ppmv at the two File Size: KB.

Besides, two kind of calcium-based sorbents (Ca(OH)2 and CaCO3) which are used generally in engineering also are not reported yet. In this study, the experiments were conducted concerning the adsorption characteristics of calcium-based sorbents (Ca(OH)2, Cited by: 3.

control of SO 3 emissions and are in use at dozens of facilities today. Three additional rule making efforts aimed at coal-fired utilities are expanding the interest in DSI technology.

Perhaps most si gnificant is the implem entation of the utility MATS rule, which requires control of HCl emi ssions from coal-fired power plants for the first Size: KB. This symposium, jointly sponsored by EPRI and EPA, was the second meeting of its kind devoted solely to the discussion of emissions control processes based on dry injection of calcium or sodium sorbents to meet SO/sub 2/ and NO/sub x/ regulations for coal-fired power plants.

This report follows on from that on solvent scrubbing for post-combustion carbon capture from coal-fired power plants by considering the use of solid sorbents and membranes instead of solvents.

First, mesoporous and microporous adsorbents are discussed: carbon-based adsorbents, zeolites, hydrotalcites and porous Size: 1MB. Assessment of Dry Sorbent Emission Control Technologies Part I.

Fundamental Processes. JAPCA. ;37(5) Toole-O’Neil B. Furnace Sorbent Injection. J Air Waste Manage Assoc. ;40(12) Shi L, Liu G, Higgins BS, Benson L. Computational modeling of furnace sorbent injection for SO2 removal from coal-fired utility : Ivan D.

Tomanović, Srđan Belošević, Aleksandar Milićević, Nenad Đ. Crnomarković. Calcium oxide is a promising sorbent for the capture of carbon dioxide.

In this work, CaO sorbents were prepared using different precursors, including Ca(NO3)24H2O, CaO, Ca(OH)2, CaCO3, and Ca(CH3COO)2H2O. Of these, the sorbent prepared from calcium acetate (CaAc2−CaO) resulted in the best uptake characteristics for CO2. This sorbent had a higher BET surface area and larger pore Cited by: The paper discusses the development of new flyash/lime sorbents for removing SO2 from coal-fired flue gas.

Flyash/lime weight ratios of to and several additives to these sorbents for promoting their reactivity were evaluated in a bench-scale reactor simulating conditions in a fabric filter.

Of the additives tested, Na2HPO4 7H2O, (NH4)2HPO4, and H3PO4 significantly enhanced the. There are many experimental studies on the adsorption of sulfur dioxide (SO2), mercury and selenium on calcium-based sorbents and how HCl affects the adsorption of these trace elements.

Jozewicz et al. [9] expressed that SO2 can be adsorbed by calcium hydroxide (Ca(OH)2) or calcium oxide sorbents. Moreover, when silica or alumina isFile Size: 4MB. Sulphur capture by calcium-based sorbents is a process highly dependent on the temperature and CO 2 concentration.

In oxy-fuel combustion in fluidised beds (FB), CO 2 concentration in the flue gas may be enriched up to 95%. Under so high CO 2 concentration, different from that in. This study is a part of a comprehensive investigation, to conduct bench- pilot- and full-scale experiments and theoretical studies to elucidate the fundamental mechanisms associated with mercury oxidation and capture in coal-fired power by: 2.

Removal of SO2 from Low Sulfur Coal Combustion Gases by Limestone Scrubbing L. W. Nannen, R. E. West, and F. Kreith University of Colorado An analysis of the limestone scrubbing process for SO2 removal has been carried out.

It has been found that low concentrations of SO2 in power plant flue gas (less than 1, ppm) tend to minimize the solid.Brice, H., G. Chelu, G. Flament, R. Manhaval and M. Vandycke, “Reduction of SO 2 Emissions from a Coal Fired Power Station by Direct Injection of Calcium Sorbents in Furnace,” pa Proceedings: First Joint Symposium on Dry SO 2 and Simultaneous SO 2 /NO x Control Technologies, 2, EPRI CS, June Google ScholarCited by: 3.First, a systematic study on the use of mechanochemistry (e.g., mechanical milling) for preparing CaO-based sorbents is reported.

Important parameters such as milling intensity in high energy ball milling equipment, use of process control agent (i.e., wet or dry processing) and milling time were examined, and their effects on the performance.