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Advanced Direct Liquefaction Concepts For Petc Generic Units Quarterly Technical Progress Report October 1992 December 1992
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Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, October 1992--December 1992 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, October 1992--December 1992 written by and published by . This book was released on 1993 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reactivity of the THF insoluble fraction of the ashy resid component of Wilsonville recycle oil (WRO) during liquefaction of Black Thunder coal in tetralin was determined at 415°C and 60 minutes. The liquefaction runs were made by combining this material with Black Thunder coal at the same ratio used in the WRO coal runs. THF conversion and product distribution from liquefaction in tetralin in the presence of the THF insoluble fraction of the ashy resid were similar to results from liquefaction in WRO. THF conversion was greater than loot with an oil yield that was somewhat higher than in WRO. Differences in HC gas yield and H2 consumption were slight, while conversion and product distribution from liquefaction of Black Thunder coal in tetralin or in the WRO distillate were quite different. In both these solvents the 85--86% THF conversions were less than for runs in which the THF insoluble fraction of the ashy resid was present. This establishes that the THF insoluble fraction of the ashy resid is the reactive fraction of the WRO.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, April 1992--June 1992 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, April 1992--June 1992 written by and published by . This book was released on 1992 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: CAER/UK: Detail coal and starting solvents from Wilsonville were analyzed to develop the data necessary to conduct process studies in the CO Pretreatment and Catalyst Evaluation segment of this program. A comparison of the solvent separation analysis with the distillation/separation used at Wilsonville showed that the residual solvent components contained a large amount of residual pentane soluble products. The ashy resid contained 3% iron and 400 ppM molybdenum. Although the iron content in the distillate and deashed resid was much less, namely about 200 ppM., the molybdenum concentrations in these fractions were not significantly reduced over the concentration in the ashy resid, i.e., 200 ppM in each. The pretreatment of coal with CO/H2O in the presence of NaOH and Na2CO3 has been shown to give a product which is lower in oxygen content and higher in hydrogen content compared to the raw coal. The atomic H/C ratios of the H2O-insolubles, THF insolubles and the PA+A fractions of the products-together with the hydrogen consumption data suggested that the raw coal has been substantially depolymerized and hydrogenated via the WGS reaction during the pretreatment process. The extensive amount of molecular reconstruction that has occurred in the solid product was evident from the ease of solubilization of the product into pyridine. The result of the pretreatment process is a product which is highly reactive under hydroliquefaction conditions at 400°C. Reaction rates seem to be much faster than the raw coal, especially at shorter reaction times, providing the opportunity for major reductions in plant vessel sizes, and preliminary data has led us to believe that better efficiency in hydrogen utilization is achieved.
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, January--March 1992 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, January--March 1992 written by and published by . This book was released on 1992 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Advance Coal Liquefaction Concept Proposal (ACLCP) carbon monoxide (CO) and water have been proposed as the primary reagents in the pretreatment process. The main objective of this project is to develop a methodology for pretreating coal under mild conditions based on a combination of existing processes which have shown great promise in liquefaction, extraction and pyrolysis studies. The aim of this pretreatment process is to partially depolymerise the coal, eliminate oxygen and diminish the propensity for retograde reactions during subsequent liquefaction. The desirable outcome of the CO pretreatment step should be: (1) enhanced liquefaction activity and/or selectivity toward products of higher quality due to chemical modification of the coal structure; (2) cleaner downstream products; (3) overall improvement in operability and process economics.
Book Synopsis Intervention de la délégation française dans la discussion sur la déclaration de principes de l'A.I.T au congrès de TOULOUSE de l'A.I.T (mai 1951) by :
Download or read book Intervention de la délégation française dans la discussion sur la déclaration de principes de l'A.I.T au congrès de TOULOUSE de l'A.I.T (mai 1951) written by and published by . This book was released on 1951 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units written by and published by . This book was released on 1995 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress during this quarter on a number of tasks is described. Task 2.3.1, Iron-based dispersed catalysts, investigated impregnated catalysts and the interactions of Fe, Ni, and Mo in coal liquefaction, as well as particulate catalysts. Work is also reported for Task 1.2, Laboratory support, which involves testing coals for liquefaction activity; Task 2.1.2.1, Pretreatment work--Dewaxing, which is investigating a solvent extraction method for dewaxing the Wilsonville heavy distillate; and Task 2.4.2, Solids separation, which involves deashing Wilsonville resid fractions.
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, April 1993--June 1993 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, April 1993--June 1993 written by and published by . This book was released on 1993 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Section 1 contains a report of the progress by the University of Kentucky Center for Applied Energy Research on the following tasks: laboratory support (liquefaction in dewaxed and hydrotreated dewaxed solvent); CO pretreatment (effect of process variables on CO pretreatment, CO-pretreated product characterization, and liquefaction results); and iron based dispersed catalysts (production, characterization and testing of sulfated hematites and reaction model development). Section 2 contains a progress report by CONSOL, Inc. on the following tasks: laboratory support; pretreatment work on dewaxing; pretreatment work on agglomeration; and economic evaluation. Progress by Sandia National Laboratories is reported in Section 3 on the following: laboratory support (TGA methods) and solvent pretreatment (coker tar hydrogenation and coal liquefaction results). Section 4 gives a preliminary technical assessment by LDP Associates on the following: baseline economic assessment; assessment of improved coal conversion; and fluid coking.
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, April 1994-June 1994 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Technical Progress Report, April 1994-June 1994 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 Advanced Direct Liquefaction Concepts for PETC Generic Units, Phase 2. Quarterly Technical Progress Report for Period October--December 1995 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units, Phase 2. Quarterly Technical Progress Report for Period October--December 1995 written by and published by . This book was released on 1996 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress reports are presented for: Task 1 management plan; Task 2.1 laboratory support (University of Kentucky/Center for Applied Energy Research); Task 3 continuous operations/parametric studies (Hydrocarbon Technologies, Inc.); Task 4.1 process modeling; and Task 4.4 preliminary technical assessment (LDP Associates). Some of the high points for this period are: the activity of the base catalyst prepared by pressure filtration of the Wilsonville Run 262E V-1082 ashy resid was determined and compared with the conversion of coal in the absence of any added catalyst; this material was found to contain 740 mg Mo/kg; in the catalyst screening test, the pressure filtered solids that had been added to the reaction mixture to a level equivalent to the solids contained in Wilsonville Run 263J gave coal conversion of 98.2% with a resid conversion of 24%; and the effect of presulfiding conditions on activating a Mo-impregnated coal with different H2S/H2 mixtures at different temperatures and reaction times was investigated.
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units written by and published by . This book was released on 1996 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Direct Liquefaction Concepts Program sponsored by the DOE Pittsburgh Energy Technology Center was initiated in 1991 with the objective of promoting the development of new and emerging technology that has the potential for reducing the cost of producing liquid fuels by direct coal liquefaction. The laboratory research program (Phase I) was completed in 1995 by UK/CAER, CONSOL, Sandia National Laboratories and LDP Associates. A three year extension was subsequently awarded in October 1995 to further develop several promising concepts derived from the laboratory program. During Phase II, four continuous bench scale runs will be conducted at Hydrocarbon Technologies, Inc. using a 2 kg/hr continuous bench scale unit located at their facility in Lawrenceville, NJ. The first run in this program (ALC-1), conducted between April 19 and May 14, 1996, consisted of five test conditions to evaluate the affect of coal cleaning and recycle solvent modification. A detailed discussion of this run is included in Section Two of this report. Results obtained during this reporting period for all participants in this program are summarized.
Book Synopsis ... Nacionalna naučno-techničeska Konferencija po metaloznanie i termoobrabotka by :
Download or read book ... Nacionalna naučno-techničeska Konferencija po metaloznanie i termoobrabotka written by and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units, Phase 2. Quarterly Technical Progress Report, January--March 1996 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units, Phase 2. Quarterly Technical Progress Report, January--March 1996 written by and published by . This book was released on 1996 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aims of this research program are to advance to bench-scale testing, concepts that have the potential for making net reductions in direct coal liquefaction process costs. The research involves a teaming arrangement between the University of Kentucky Center for Applied Energy Research (CAER), Consolidation Coal Company (CONSOL), Sandia National Laboratories (SNL), and LDP Associates. Progress reports are presented for: Task 2.1.1 development of a catalyst screening test (UK/CAER); Task 2.1.2 activation of impregnated catalysts (UK/CAER); Task 2.2 laboratory support (CONSOL); Task 3 continuous operations/parametric studies (Hydrocarbon Technologies, Inc.) and; Task 4.4 conceptual design, preliminary technical assessment (LDP Associates).
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units Phase II. Quarterly Technical Progress Report, April--June 1996 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units Phase II. Quarterly Technical Progress Report, April--June 1996 written by and published by . This book was released on 1996 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: A catalyst screening test (CST) was developed to evaluate the activity of various catalyst precursors for their liquefaction activity in a solvent comprising the solids-free components of a recycle solvent generated at Wilsonville, namely a ROSE SR V-130 deashed resid from period A and V-1074 heavy distillate from period B. Since the deashed resid has an elemental composition very nearly the same distillate from period B. Since the deashed resid has an elemental composition very nearly the same as in the solids-free fraction of the recycle solvent, the reactivity of these two resid and dry coal are nearly the same as in Run 263J, the overall composition should approximate the feed stream used in the Wilsonville pilot plant except for the absence of the solids component. Removing the solids from the reaction mixture should simplify the interpretation of the results since normally a considerable amount or recycled catalyst is contained in this fraction.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1996-07 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Report, October 1991--December 1991 by :
Download or read book Advanced Direct Liquefaction Concepts for PETC Generic Units. Quarterly Report, October 1991--December 1991 written by and published by . This book was released on 1991 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laser pyrolysis technique has been used to produce ultrafine particles of iron carbide with diameters ranging from 2 to 20 nm. Catalysis using iron carbide was investigated in the liquefaction of Wyodak subbituminous coal; yields were determined. A study was carried out to examine the possibility of using an ultrasonic extraction technique as a rapid method of product work-up of samples following pretreatment or liquefaction experiments. A similar study had shown that extraction of coal-derived products by an ultrasonic method was rapid and gave yields and product distributions comparable to those obtained by Soxhlet extraction. On another project, three different types of supported catalysts were used to test activity for the combined water-gas shift hydrogenation of a synthetic donor solvent. The three catalysts tested were: (1) Alumina supported NiMo catalyst-Shell 324m; (2) Bulk hydrous TiO NiMo catalyst; (3) Thin film hydrous TiO catalyst supported on silica beads.
Book Synopsis Advanced Direct Coal Liquefaction Concepts. Quarterly Report, October 1, 1992--December 31, 1992 by :
Download or read book Advanced Direct Coal Liquefaction Concepts. Quarterly Report, October 1, 1992--December 31, 1992 written by and published by . This book was released on 1992 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the first quarter of FY 1993, the Project proceeded close to the Project Plan. The analysis of the feed material has been completed as far as possible. Some unplanned distillation was needed to correct the boiling range of the Black Thunder solvent used during the autoclave tests. Additional distillation will be required if the same solvent is to be used for the bench unit tests. A decision on this is still outstanding. The solvent to be used with Illinois No. 6 coal has not yet been defined. As a result, the procurement of the feed and the feed analysis is somewhat behind schedule. Agglomeration tests with Black Thunder coal indicates that small agglomerates can be formed. However, the ash removal is quite low (about 10%), which is not surprising in view of the low ash content of the coal. The first series of autoclave tests with Black Thunder coal was completed as planned. Also, additional runs are in progress as repeats of previous runs or at different operating conditions based on the data obtained so far. The results are promising indicating that almost complete solubilization (close to 90%) of Black Thunder coal can be achieved in a CO/H2O environment at our anticipated process conditions. The design of the bench unit has been completed. In contrast to the originally planned modifications, the bench unit is now designed based on a computerized control and data acquisition system. All major items of equipment have been received, and prefabrication of assemblies and control panels is proceeding on schedule. Despite a slight delay in the erection of the structural steel, it is anticipated that the bench unit will be operational at the beginning of April 1993.
