Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Technical Progress Report April June 1992 written by and published by . This book was released on 1992 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The char produced in the 100-lb/hr process development unit has been magnetically cleaned by AMAX and returned to the Energy and Environmental Research Center (EERC). The final calcining step of the process is currently being performed in the 4-lb/hr continuous fluidized-bed reactor (CFBR). The liquid products generated by the PDU have been collected and split into usable fractions and fractions to be discarded. Samples of the coal-derived liquids have been sent to Merichem Corporation of Houston and Koppers Industries of Pittsburgh for determination of their usefulness as chemical feedstock for the production of cresylic acids and anode-grade-binder pitch. The technical and economic assessment performed by Xbi and J.E Sinor Consultants has been completed. The briquette testing being conducted at the EERC has produced high quality briquettes using a number of binder agents. The next step in the test matrix will include the use of coal-derived liquids from the PDU as the binder. An additional coal has been added to the mild gasification test matrix. AMAX recently acquired two eastern low-sulfur bituminous coals and suggested that a limited test schedule be conducted to determine the suitability of these coals for the mild gasification process. The sulfur levels in the raw coals are below the target levels suggested by the steel industry for metallurgical coke use. To date, it has not been possible to reach these goals using the high-sulfur Illinois Basin coals tested.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report April 1 1992 June 30 1992 written by and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seventeen continuous coke tests were completed. Efforts to produce coke from lower rank non-coking coal resulted in a coke with 1/3 less crush strength. This lower quality coke made from cheaper coal may have value as a partial charge in a blast furnace. A coke strength increase of 80% was obtained by curing the coke at 850°F for one hour prior to the normal cure of 1 1/2 hours at 1832°F. Sixteen CMGU test runs were made using 13 different coals. A test run of 12 hours without problems was included. Design of the gas heaters for the screws was completed and the heaters will be shipped near the end of May 1992. Operations of the CMGU condensers were improved by preheating to above 212°F before starting coal feed. Installation of the screw heaters and improved condenser performance will permit operating the CMGU at the design capacity of 1000 lbs coal/hour.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Technical Progress Report April June 1988 written by and published by . This book was released on 1988 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy is investigating a process concept called Mild Gasification in which rapid devolatilization of coal under mild conditions of temperature and pressure would yield three product slates: a low- or medium-BTU gas, a valuable hydrocarbon condensate, and a reactive char. The ongoing objective of this program is to develop a continuous mild gasification process which will produce a product mix that optimizes process economics. In order to provide the incentive for private industry to commercialize the process, it is necessary to demonstrate yields and qualities in a versatile continuous process development unit (PDU). This unit must be capable of assessing both coal- and process-specific effects in a cost-effective and timely manner. Based on literature reviews and experimental verification, a data base will be developed correlating coal and process parameters with product characteristics. This will provide process developers with the information necessary to derive site-specific economics which will be crucial for the commercialization of the mild gasification process. The literature review and market assessment has been completed under Task 1 of the program. Under Task 2, coal-specific tests are being conducted on three AMAX coals: Chinook, an Indiana {number_sign}3 bituminous coal; Delta, an Illinois {number_sign}6 bituminous coal; and Eagle Butte, a Wyodak subbituminous coal. Various methods of char upgrading are being conducted by AMAX R & D of Golden, Colorado. The upgraded char is then combined with iron ore and tested for pig iron production under an AMAX subcontract to Pellet Technology Corporation of Marquette, Michigan. In addition to the test program, process development and scaleup information is being developed for a 1 ton/hr pilot plant unit. Plans for Tasks 2 and 3, equipment modifications, and report. Results include: char analysis, condensable analysis, waste water analysis, and gas analysis.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report April June 1995 written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research and development effort was to develop an advanced, continuous ''mild gasification'' process. The relative quantities and properties of the products are appropriate for making the concept economically and environmentally viable. In ''mild gasification, '' coal is converted under relatively mild conditions of temperature and pressure in the absence of air into products which include a high heating value gas, high aromatic condensibles, char and coke all with physical and chemical properties suitable for the anticipated end uses. Two tons of CTC/DOE continuous coke of 6 in. x 5 in. x 4 in. size was produced in the Pilot Demonstration Unit. This coke was tested under actual foundry conditions in a 96 in. diameter commercial cupola. The test was run on the first shift on April 19, 1995. The coke sample was used as a direct replacement for 25 percent of the coke charge. A total of 51 scrap iron charges were run with the CTC/DOE continuous coke. Results of the test were excellent. The two main indicators improved., Tap temperature increased from an average of 2846°F to 2890°F. Carbon pickup improved from 3.49 percent C to 3.59 percent C when the CTC coke, hit the bed. These results are very meaningful because they cannot be measured in the lab. ChemChar Research, Inc. in Columbia, Missouri, is evaluating CTC chars as potential agents for removing pollutants from gas streams. Composite CTC char treated with the ChemChar activation process resulted in promising results. A 11.8 percent toluene adsorption and 13.4 percent monochlorobenzene adsorption were achieved with CTC char after activation.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Progress Report July September 1995 written by and published by . This book was released on 1995 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eight tons of CTC/DOE formed coke of 6 inches x 5 inches x 4 inches size were produced in the PDU. This coke will be tested at 100 percent formed coke charge in a commercial size foundry. A scheduled test run was postponed due to production requirements at the foundry. Foundry coke was produced from weakly coking Colorado coal. Blending of this coal with 40 percent of stronger caking, higher rank coals was required. Western coal from the Rosebud seam was pyrolyzed to upgrade this low rank, high moisture coal. The objective is to improve the coal as a fuel and to determine if an acceptable char or coke can be produced from this coal.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1995 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report October 1 1992 December 31 1992 written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 70-pound continuous coke sample was prepared for testing by a major conventional coke producer. Test results were encouraging, but a suggestion was made to produce larger briquettes. Work is underway to produce 6in. x 5in. x 3.75in. briquettes with plans to crush these briquettes to plus 2-inch x minus 3-inch irregular shaped coke. Work continued to provide a coke reactivity test instrument at CTC. A new vessel was fabricated of Haynes HR-160 which will withstand temperatures up to 2300°F. A total of 11 CMGU test runs were completed. Coal feed rates of over 1000 pounds per hour for short periods were obtained. Average feed rates of over 800 pounds per hour were reached for two test runs. The jet burners heating the insides of the screws' shafts made these higher rates possible. Three test runs were made using 28 x 100 mesh Penelec filter cake with the objective of upgrading this coal processing byproduct to coke. Improvements to the PDU continued with two condensers' modifications and improved packing gland seals.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report January 2 1992 March 31 1992 written by and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seventeen continuous coke tests were completed. Efforts to produce coke from lower rank non-coking coal resulted in a coke with 1/3 less crush strength. This lower quality coke made from cheaper coal may have value as a partial charge in a blast furnace. A coke strength increase of 80% was obtained by curing the coke at 850°F for one hour prior to the normal cure of 1 1/2 hours at 1832°F. Sixteen CMGU test runs were made using 13 different coals. A test run of 12 hours without problems was included. Design of the gas heaters for the screws was completed and the heaters will be shipped near the end of May 1992. Operations of the CMGU condensers were improved by preheating to above 212°F before starting a coal feed. Installation of the screw heaters and improved condenser performance will permit operating the CMGU at the design capacity of 1000 lbs coal/hour.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report October 30 1991 January 2 1992 written by and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this quarter the work on Task 3, char upgrading, was in two areas; upgrading Penelec char made from Penelec filter cake to blast furnace formed coke, and evaluating various bituminous pitch binders. The formed coke from Penelec filter cake was of good quality with a high crush strength of 3000 pounds. The reactivity was not equal to that of conventional coke but it is felt that it could be made to equal conventional coke with further study, specifically by adding binder coal to the raw material recipe. The work evaluating bituminous pitch binders confirmed earlier thinking that will be valuable to a commercial scale-up. Asphalt binders are compatible with coal tar binders and produce a coke of equal quality. Hence asphalt binders can be used to supply deficiencies of tar production in units employing coals with insufficient volatile matter to supply enough tar for the coking process. Asphalt binders have about a 50% savings from coal tar pitch. During the 4th Quarter of 1991, a total of 15 Continuous Mild Gasification Unit (CMGU) test runs were made. Efforts continued to determine the optimum forward/reverse ratio to maximize coal feed rate. The success of these efforts has been limited with a maximum coal feed rate of 400 lbs/hr obtainable with a caking coal. The handicap of not having screw shaft heaters cannot be overcome by adjustment of the forward/reverse ratio.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report January March 1996 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report July 1 1992 September 30 1992 written by and published by . This book was released on 1992 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The coke reactivity test furnace was installed and checked. Design of a long lasting reaction vessel is underway with emphasis on material of construction for elevated temperatures. Development of a formed coke formula is continuing in preparation of a 70 pound sample for evaluation by a major conventional coke producer. Ten CMGU test runs were made. Most of the quarter was used to replace the pyrolyzer screws, check-out the screws' pulse burners, and replace the screws' stub shafts. The objective of the determination of the pyrolyzer maximum capacity with the internal screws' heaters should be achieved in October 1992.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on mild gasification is discussed. The report is divided into three sections: literature survey of mild gasification processes; literature survey of char, condensibles, and gas upgrading and utilization methods; and industrial market assessment of products of mild gasification. Recommendations are included in each section. (CBS) 248 refs., 58 figs., 62 tabs.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report October December 1993 written by and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formed coke experiments to select suitable binder coals were completed. Of five different candidates, a metallurgical coal blend from Koppers and a Sewell Seam coal were found to be good binder coals. Petrographic analysis of the binder coals were used in making the sections. Design of a 1000 pounds per hour continuous formed coke pilot plant is under way. Used equipment will be used wherever possible to lower the cost. Six pyrolyzer test runs were completed. Plugging of the shell and tube light oils condenser occurred for long test runs. A new spray contact condenser is being installed on the pyrolyzer using the original tar trap. Circulating coal liquids should dissolve tars and prevent plugging.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products written by and published by . This book was released on 1990 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research continued on the production of co-products from mild gasification. This quarter, 10 mild gasification tests were conducted in the 8-inch-I.D. process research unit (PRU). Modifications to the PRU were made during this period to improve mixing and to overcome the caking tendency of the Illinois No. 6 coal. Six of the tests resulted in satisfactory operation at steady conditions for 2.25 to 3.25 hours. Samples of char, gas, water, and organic condensables were collected over a one-hour period from each of these successful tests and analyzed. The effects of process temperature over the range of 1025° to 1390° was studied during this quarter. Compositional effects on the oils and tars observed with increased temperature are increased light oil content, decreased pitch content, decreased oxygen content, increased nitrogen and sulfur content, and increasing aromaticity. Char upgrading studies continued during the quarter. Briquettes made in a laboratory press, using either a pitch binder or Illinois No. 6 coal to provide an in-situ binder, were calcined and tested for diametral compression strength. Char was also subjected to steam activation at a variety of conditions to determine the potential for use as a low-cost absorbent for water treatment. 2 refs., 15 figs., 11 tabs.
Download or read book Development of an Advanced Continuous Mild Gasification Process for the Production of Co products Quarterly Report October December 1995 written by and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efforts continued to obtain financing for a commercial continuous formed coke plant. Discussions were held with two steel companies that are interested in producing coke for their use in steel production and foundry operations. Planning for production of 40 tons of foundry formed coke is underway. This coke will be used in two 20-ton tests at General Motors' foundries. During this production, it is planned to determine if a tunnel kiln can be used as a coking furnace as an alternative for a rotary hearth. A rotary hearth is about three times more costly than a competitive-sized tunnel kiln. Work continued on using Western non-caking coals to produce formed coke. Successful tests were made by using Eastern caking coals and other binders to permit using up to 50% of the cheaper Western non-caking coals in formed coke production. The primary objective of this project is to develop an advanced continuous mild gasification process and product upgrading processes which will be capable of eventual commercialization.
