Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies Froth Flotation Quarterly Technical Progress Report No 25 October 1 1994 December 31 1994 written by and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies Froth Flotation Quarterly Technical Progress Report No 24 July 1 1994 September 30 1994 written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies Froth Flotation Quarterly Technical Progress Report No 23 April 1 1994 June 30 1994 written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies Froth Flotation Quarterly Technical Report No 22 January 1 1994 March 31 1994 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1993 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work completed produced the criteria for additional engineering analysis, computation and detailed experimental benchscale testing for areas of uncertainty. The engineering analysis, computation, bench-scale testing and component development was formulated to produce necessary design information to define a commercially operating system. In order to produce the required information by means of bench-scale testing and component development, a uniform coal sample was procured. After agreement with DOE, a selected sample of coal from those previously listed was secured. The test plan was developed in two parts. The first part listed procedures for engineering and computational analyses of those deficiencies previously identified that could be solved without bench scale testing. Likewise, the second part prepared procedures for bench-scale testing and component development for those deficiencies previously identified in Task 3.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies Froth Flotation Quarterly Technical Progress Report No 21 October 1 1993 December 31 1993 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study conducted by Pittsburgh Energy Technology Center of sulfur emissions from about 1,300 United States coal-fired utility boilers indicated that half of the emissions were the result of burning coals having greater than 1.2 pounds of SO[sub 2] per million BTU. This was mainly attributed to the high pyritic sulfur content of the boiler fuel. A significant reduction in SO[sub 2] emissions could be accomplished by removing the pyrite from the coals by advanced physical fine coal cleaning. The overall project scope of the engineering development project is to conceptually develop a commercial flowsheet to maximize pyritic sulfur reduction at practical energy recovery values. This is being accomplished by utilizing the basic research data on the surface properties of coal, mineral matter and pyrite obtained from the Coal Surface Control for Advanced Fine Coal Flotation Project, to develop this conceptual flowsheet. The conceptual flowsheet must be examined to identify critical areas that need additional design data. This data will then be developed using batch and semi-continuous bench scale testing. In addition to actual bench scale testing, other unit operations from other industries processing fine material will be reviewed for potential application and incorporated into the design if appropriate.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1992 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The construction of the DOE POC at the OCDO facility continued through this entire quarter. By the end of the quarter approximately 90% of all of the construction had been completed. All equipment has beeninstalled, checked for mechanical and installation and operated from a local pushbutton. During this quarter a review of items to be completed for start-up was compiled. This information was then presented to the construction subcontractors and agreement was concluded that all items will be completed and operational for processing coal by February 1, 1993. There are still several items that were not on site for installation during this quarter. These items are the flocculant controls supplied by Westec Engineering, Inc., and the discharge valve for the hyperbaric filter supplied by KHD. Neither of these items will prevent start-up. The flocculants can be manually controlled and provisions are all ready provided to bypass the hyperbaric filter to the Sharpels high-G centrifuge. Both of these items are scheduled for delivery in mid-January.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy (DOE) awarded a contract entitled ''Engineering Development of Advanced Physical Fine Coal Cleaning Technology - Froth Flotation'', to ICF Kaiser Engineers with the following team members, Ohio Coal Development Office, Babcock and Wilcox, Consolidation Coal Company, Eimco Process Equipment Company, Illinois State Geological Survey, Virginia Polytechnic Institute and State University, Process Technology, Inc. This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies Froth Flotation Quarterly Technical Progress Report No 26 January 1 1995 March 31 1995 written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1991 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design criteria for each unit operation have been developed based upon a number of variables. These variables, at this time, are based upon the best engineering design information available to industry. A number of assumptions utilized in the design criteria are uncertain. The uncertainties of inert atmospheres for grinding and flotation as well as pyrite depressants were answered by the Surface Control Project. It was determined that inerting was not required and no ''new'' reagents were presented that improved the flotation results. In addition, Tasks 5 and 6 results indicated the required reagent dosage for conventional flotation and advanced flotation. Task 5 results also indicated the need for a clean coal, thickener, the flocculent dosages for both the clean coal and refuse thickeners, and final dewatering requirements. The results from Tasks 5 and 6 and summarized in Task 7 indicate several uncertainties that require continuous long duration testing. The first is the possibility of producing a grab product for both the Pittsburgh and Illinois No. 6 coals in conventional flotation. Second what does long-term recirculation of clarified water do to the product quality? The verification process and real data obtained from Tasks 5 and 6 greatly reduced the capital and operating costs for the process. This was anticipated and the test work indeed provided confirming data.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy (DOE) awarded a contract entitled Engineering Development of Advanced Physical Fine Coal Cleaning Technology - Froth Flotation'', to ICF Kaiser Engineers with the following team members, Ohio Coal Development Office, Babcock and Wilcox, Consolidation Coal Company, Eimco Process Equipment Company, Illinois State Geological Survey, Virginia Polytechnic Institute and State University, Process Technology, Inc. This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This task is the actual demonstration of the advanced froth flotation technology. All previous work has led to this task. ICF KE technicians and process engineers from the team will operate the plant over a 10 month period to demonstrate the capability of the technology to remove 85% of the pyritic sulfur from three different test coals while recovering at least 85% of the as-mined coal's energy content. Six major subtasks have been included to better define the overall work scope for this task. The ICF KE team will test the Pittsburgh No. 8 seam, the Illinois No. 6 seam and the Upper Freeport seam; the team will operate the circuit in a continuous run; the team will analyze all samples generated in those runs and will develop a plan to store and dispose of the coal and refuse products. All laboratory data generated will be accessible to all team members and the DOE. The test program for the Pittsburgh No. 8 coal began during March 1, 1993. An arrangement has been made between ICF Kaiser Engineers (ICF KE) and American Electric Power (AEP), who is the host for the DOE POC facility. The arrangement calls for AEP to purchase the raw coal and use the clean coal generated by the DOE POC facility. This arrangement permits the processing of raw coal at a very minimal cost of purchasing the raw coal.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to develop additional confidence in the conceptual design of the advanced froth flotation circuit, a 2-3 TPH Proof-of-Concept (POC) facility was necessary. During operation of this facility, the ICF KE team will demonstrate the ability of the conceptual flowsheets to meet the program goals of maximum pyritic sulfur reduction coupled with maximum energy recovery on three DOE specified coals. The POC circuit was designed to be integrated into the Ohio Coal Development's facility near Beverly, Ohio. OCDO's facility will provide the precleaning unit operations and ICF KE will add the advanced froth flotation circuitry. The work in this task will include the POC conceptual design, flowsheet development, equipment list, fabrication and construction drawings, procurement specifications and bid packages and a facilities.
Download or read book LACTICIN RM LACTOCOCCUS LACTIS SUBSP LACTIS written by Merav Yarmus and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1992 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study conducted by Pittsburgh Energy Technology Center of sulfur emissions from about 1,300 United States coal-fired utility boilers indicated that half of the emissions were the result of burning coals having greater than 1.2 pounds of SO2 per million BTU. This was mainly attributed to the high pyritic sulfur content of the boiler fuel. A significant reduction in SO2 emissions could be accomplished by removing the pyrite from the coals by advanced physical fine coal cleaning. An engineering development project was prepared to build upon the basic research effort conducted under a solicitation for research into Fine Coal Surface Control. The engineering development project is intended to use general plant design knowledge and conceptualize a plant to utilize advanced froth flotation technology to process coal and produce a product having maximum practical pyritic sulfur reduction consistent with maximum practical BTU recovery.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1991 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document a quarterly report prepared in accordance with the project reporting requirements covering the period from July 1, 1992 to September 30, 1992. This report provides a summary of the technical work undertaken during this period, highlighting the major results. A brief description of the work done prior to this quarter is provided in this report under the task headings. The overall project scope of the engineering development project is to conceptually develop a commercial flowsheet to maximize pyritic sulfur reduction at practical energy recovery values. This is being accomplished by utilizing the basic research data on the surface properties of coal, mineral matter and pyrite obtained from the Coal Surface Control for Advanced Fine Coal Flotation Project, to develop this conceptual flowsheet. The conceptual flowsheet must be examined to identify critical areas that need additional design data. This data will then be developed using batch and semi-continuous bench scale testing. In addition to actual bench scale testing, other unit operations from other industries processing fine material will be reviewed for potential application and incorporated into the design if appropriate. The conceptual flowsheet will be revised based on the results of the bench scale testing and areas will be identified that need further larger scale design data verification, to prove out the design.
Download or read book Engineering Development of Advanced Physical Fine Coal Cleaning Technologies written by and published by . This book was released on 1993 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first system to test in the advanced DOE POC was the grinding circuit. The grinding circuit consists of the mill classifying cyclones in reverse closed circuit with the ball mill. Reverse closed circuit means the incoming feed and ball mill product are sized in the mill classifying cyclones ahead of the ball mill. This permits removal of natural-sized material and ground-sized material before recirculation through the ball mill. Numerous tests were conducted to establish the correct combination of orifice sizes, pressures and grinding media to meet the design criteria of 95% passing 200 mesh in the column flotation feed. The results from this test work are shown on Table 13.1, Grinding Circuit Test Results and graphically on Figure 13.2 and 13.3. These graphs show the relationship to Column Feed Rate Versus Size of Column Feed and Column Feed Rate Versus Column Feed Mean Particle Size. Our examination of the data indicates that the ball mill must have the smaller grinding media, and the mill classifying cyclone must be arranged as shown in test 93041901. The next step in the test plan was the 16-test resolution IV fractional factorial experiment of a 26−2 experiment to determine major interaction of operating parameters. The column flotation independent variables are shown on Table 13.2, and the proposed test matrix is shown on Table 13.3.
