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| Research & Development |
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Below is information related to Research & Development.
| Title: |
Low solids coal water slurry co-firing for Nox trim |
| ISSN: |
791836177 |
| Author: |
Battista, Joseph J.; Hughes, Evan E. |
| Abstract: |
Over the past decade, members of the Upgraded Coal Interest Group and EPRI, the Department of Energy, the Energy and Environmental Research Corporation (GE-EER), Washington Energy Processing (WEP), Penn State University and the previous owners and operators of Seward Station located in western Pennsylvania, conducted a series of formulation and combustion tests using coal waste fines as a low solids coal water slurry coffering fuel for electric power generation. The fine coal was recovered from coal fines impoundments and fresh coal cleaning plant fines that were cleaned, thickened and then co fired with pulverized coal in utility scale boilers. This paper explains the need for a program to eliminate these impoundments and describes the results of some of the tests conducted on the technology that demonstrate the effectiveness of trimming NOx emissions by the use of slurry coffering. This method of trimming NOx emission has been shown to have the capability of reducing NOx emissions by 20% to 35% below the levels achieved by some low NOx burners and selective non-catalytic reduction systems (SNCRs). |
| Abbreviated Serial Title: |
Proc. 2002 Int. it. Power Gener. Conf. |
| Abbreviated Serial Title: |
Int J Surf Min Reclaim Environ |
| Title: |
Alternatives analysis for coal slurry impoundments |
| ISSN: |
0026-5187 |
| Author: |
Gardner, J.S.; Houston, K.E.; Campoli, A. |
| Abstract: |
After the Martin County coal slurry impoundment failure released 0.95 to 1.15 million msup3/sup (250 to 300 million gal) of coal slurry, there has been a continued outcry for the elimination of coal slurry impoundments. Many alternative methods and technologies have been proposed as viable replacements. Regulatory agencies are now requiring that companies justify new coal slurry impoundments by preparing alternatives analyses for each project. This paper reviews several of these alternative methods and technologies. |
| Abbreviated Serial Title: |
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| Title: |
Alternatives analysis for coal slurry impoundments |
| ISSN: |
0026-5187 |
| Author: |
Gardner, J.S.; Houston, K.E.; Campoli, A. |
| Abstract: |
After the Martin County coal slurry impoundment failure released 0.95 to 1.15 million m3 (250 to 300 million gal) of coal slurry, there has been a continued outcry for the elimination of coal slurry impoundments. Many alternative methods and technologies have been proposed as viable replacements. Regulatory agencies are now requiring that companies justify new coal slurry impoundments by preparing alternatives analyses for each project. This paper reviews several of these alternative methods and technologies. |
| Abbreviated Serial Title: |
Min. Eng. |
| Title: |
Slurry reclamation |
| ISSN: |
0306-400X |
| Author: |
Nawrot, Jack |
| Abstract: |
Current reclamation requirements require that 4 ft of soil or other material be used as final cover on those slurry impoundments not capable of supporting vegetation. Implementation of this requirement is often expensive and difficult due to in availability of cover and surface instability. Understanding the distribution patterns of acid and non-acid components within a slurry pond or utilizing disposal/discharge management practices to minimize or eliminate the severity and extent of acid producing zones is essential to implementing cost effective alternatives to the current 4-ft soil cover requirement. To promote an understanding of a laboratory's slurry reclamation program, this paper provides an overview of typical physical, chemical and hydrologic characteristics of slurry impoundments and a management approach to identification and implementation of reclamation alternatives. |
| Abbreviated Serial Title: |
Sess Pap Am Mining Congr Coal Conv |
| Title: |
Development of electrochemical sensor for on-site monitoring of heavy metal ions in coal processing and utilization |
| ISSN: |
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| Author: |
A. Manivannan and Mohindar S. Seehra
Physics |
| Abstract: |
A two year research program is proposed to develop a novel electrochemical sensor based on boron-doped diamond (BDD) electrode for monitoring/controlling heavy metal ions such as Hg, Zn, Cu, Pb, As, Cd, Fe) encountered in the processing and utilization of coals. This research is based on our very promising initial results in which ppb levels of Pb and Hg have been detected in laboratory prepared solutions. It is argued that the BDD electrodes are superior to other commonly used electrodes (such as glassy carbon) in terms of their ruggedness, chemical stability, wide potential window and lower background current. These advantages are important for the simultaneous detection of a number of elements in some solution.
The proposed investigations will include: (i) Development of the calibration curves for different elements using laboratory prepared solutions; (ii) Testing of samples obtained from a coal preparation plant and an acid mine drainage site and validation of the method employing other analytical techniques; and (iii) Development of a portable unit for on-site detection. The project will benefit from the collaborations provided by the Consolidation Coal Co. (letter attached) and Prof. Fujishima of the University of Tokyo where the BDD electrodes are synthesized. Sufficient facilities and expertise are available in our laboratory at WVU to immediately initiate this project.
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| Abbreviated Serial Title: |
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| Link: |
http://www.nrcce.wvu.edu/cast/development.html |
| Title: |
Separation of small particles due to density difference in a co-fire system |
| ISSN: |
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| Author: |
Eric Johnson and Bruce Kang |
| Abstract: |
The efficiency of separating small dense particles from small light particles in the internal recirculation flow within a CFB riser will be investigated. Currently, there are many systems for separating fine particles. However, these systems lack the efficiency and/or the economics to be commercially viable in many situations. Small particles considered in this study are particles less than 250 micrometers in diameter. This research is directed towards removing pyrite from coal fines at a coal cleaning plant. Also, of concern will be the removal of radioactive particles from the desert sand at the Nevada Test Sites. Progress Report: Quarter I of Year 1 July 1, 2002 Initial activities include the appointment of a graduate student (Jeromy Register) to assist in the design, instrumentation and bringing on-line the experimental system. Space has been obtained in the National Research Center for Coal and Energy's high bay to house the experimental unit. In addition several meetings have been held with our industrial partner, Mr. M. Hamrick, of NORTHCO Co. with respect to building the experimental system. The design of the experimental system has been completed and fabrication of the system has been initiated. A Chemical Hygiene Plan (CHP) is being developed for the operation of the experimental system and should be completed by the end of July, 2002. At this point in the project, there appear to be no major problems to hinder continual progress and achieving the goals of the project. |
| Abbreviated Serial Title: |
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| Link: |
http://www.nrcce.wvu.edu/cast/separation.html |
| Title: |
Coal desulphurization using hypochlorite and cupric ion as a catalyst - feasibility study |
| ISSN: |
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| Author: |
Eung Ha Cho and Ray Y. K. Yang |
| Abstract: |
The utilization of coal as a feedstock to produce carbon materials is very much hampered by the presence of its organic sulfur content. However, the organic sulfur is very difficult to remove. It is generally accepted that only two methods have capability to remove the organic sulfur rather effectively; one is with a melt of sodium hydroxide/potassium hydroxide at high temperatures (Gravimelt Process) and the other is with chlorine chemicals. However, the Gravimelt Process contaminates the coal structure, and its decontamination and the regeneration of the reagents may be insurmountable problems in terms of economic feasibility. Chlorine chemicals also chlorinate the coal structure and the removal of organic sulfur is not high enough to produce a premium coal or feedstock. It is proposed that organic sulfur be leached with hypochlorite using cupric amine as a catalyst. Hypochlorite is the predominant chlorine derivative at high pH's. The catalysis of cupric amine was found during 1990s in leaching of gold with hypochlorite and other oxidants. We will conduct two kinds of consecutive experiments. In the first, coal will be leached in a reactor with a solution containing hypochlorite and cupric amine. In the second, the leached coal will be hydrolyzed in hot sodium carbonate solution, which is believed to cleave the organic sulfur bond from coal and thus further reduce the sulfur content. Leached coal and hydrolyzed coal samples will be analyzed particularly for organic sulfur and chloride content. The data will be analyzed to determine the desulphurization potential through the two consecutive experiments and also the chlorination/ dechlorination of the coal matrix through each of the two experiments |
| Abbreviated Serial Title: |
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| Link: |
http://www.nrcce.wvu.edu/cast/desufurization.htm |
| Title: |
Drying Slurry |
| ISSN: |
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| Author: |
Gunderboom, Inc |
| Abstract: |
Gunderboom, Inc. designs, builds and installs engineered aquatic filter barrier systems for diverse conditions and applications. From simple, permeable curtains to complex structures, Gunderboom systems allow water passage while filtering particulates, debris, contaminates and/or aquatic biota such as fish, fish eggs and larvae.
Applications of Gunderboom technologies provide Clean Water Act section 316(b) compliance solutions, help beach managers keep recreational beaches open, assure drinking water quality standards, streamline the Marine Mammal Act permitting process, and enable pile driving, dredging, industrial, and underwater construction projects to move forward without damaging the environment. |
| Abbreviated Serial Title: |
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| Link: |
http://www.gunderboom.com/ |
| Title: |
Launch of the Rhodes BioSURE® Process |
| ISSN: |
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| Author: |
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| Abstract: |
History was made in South Africa on 18 January 2005 with the launch of the first full-scale plant in the world using the Rhodes BioSURE® process, a locally-developed, first-of-its-kind solution for treating acid mine water drainage. The Rhodes BioSURE® process is the most cost-effective biological treatment option developed to date for reducing sulphates in acid mine water without the external addition of chemicals. The new plant construction at Ancor Sewage Works, near Springs, was launched by Professor Dennis Goldberg, Special Advisor to the Minister of Water Affairs and Forestry, Ms Buyelwa Patience Sonjica.
Developed by Rhodes University’s Environmental Biotechnology Research Unit over the past eight years with the support of the Water Research Commission, ERWAT and BioPAD, the Rhodes BioSURE® Process removes sulphate from acid rich mine water. Instead of expensive carbon and electron donor sources, primary sewage sludge, a by-product from ERWAT, is being used. Together, the two waste products ensure improved water quality before being discharged into the Blesbokspruit Ramsar site. At the same time, safe and stable biosolids are produced.
The WRC CEO, Dr Rivka Kfir, was one of the speakers at this event. The technical presentation was done by Prof Peter Rose of Rhodes University. Prof Rose was the project leader of this project. Guests were entertained by the TWC theatre group.
The WRC is the patent holder of patents covering the BioSURE® technology. The WRC and Erwat have signed a licence agreement, enabling Erwat to exploit the BioSURE® technology. |
| Abbreviated Serial Title: |
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| Link: |
http://www.wrc.org.za/archives/news%20archive/2005/biosure%20jan05.htm
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