15 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Baldwin, R. M."  
Results: 1 - 15
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment

Description: This report describes progress on research during the eleventh quarter of this contract dealing with applications of coal pretreatment techniques in coal/oil co-processing and direct hydroliquefaction. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal convers… more
Date: 1991-06~
Creator: Baldwin, R. M.; Gaur, S. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanisms and kinetics of coal hydrogenation. Quarterly progress report, October-December 1979

Description: Colorado School of Mines is conducting coal hydrogenation research with the following objectives and scope of work: (1) Comparison of the rates of coal hydrogenation in continuous flow stirred tank and tube flow reactors using pure hydrogen, catalyzed CO-STEAM, and syngas processing conditions; (2) Investigation of the influence of coal rank on the rate of hydrogenation of coal to preasphaltene, asphaltenes, and oil in batch reactors; (3) Batch evaluation of the effect of operating conditions (… more
Date: February 1, 1980
Creator: Gary, J. H.; Baldwin, R. M. & Bain, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment

Description: This report describes progress on research during the seventh quarter of this contract dealing with applications of coal pretreatment techniques in coal hydroliquefaction. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing low rank coals a… more
Date: 1990-09~
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment

Description: The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing low rank coals and low severity conditions (reaction temperatures generally less than 350{degrees}C) are the primary focus of the liquefaction experiments, as it is expected that the effec… more
Date: 1990-06~
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment

Description: This report describes progress on research during the 12th and final quarter of this contract dealing with applications of coal pretreatment techniques in coal/oil co-processing and direct hydroliquefaction. The overall objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions… more
Date: 1991-09~
Creator: Baldwin, R. M.; Gaur, S. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment

Description: This report describes progress on research during the fifth quarter of this contract dealing with applications of coal pretreatment techniques in coal hydroliquefaction by co-processing. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing l… more
Date: 1989-12~
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment

Description: The findings in the first phase were as follows: 1. Both reductive (non-selective) alkylation and selective oxygen alkylation brought about an increase in liquefaction reactivity for both coals. 2. Selective oxygen alkylation is more effective in enhancing the reactivity of low rank coals. In the second phase of studies, the major findings were as follows: 1. Liquefaction reactivity increases with increasing level of alkylation for both hydroliquefaction and co-processing reaction conditions. 2… more
Date: December 1991
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhancing low severity coal liquefaction reactivity using mild chemical pretreatment

Description: In this paper, we describe results from a study in which mild chemical pretreatment of coal has been used to enhance low severity liquefaction reactivity. We have found that ambient pretreatment of eight Argonne coals using methanol and a trace amount of hydrochloric acid improves THF-soluble conversions 24.5 wt% (maf basis) for Wyodak subbituminous coal and 28.4 wt% for Beulah-Zap lignite with an average increase of 14.9 wt% for liquefaction of the eight coals at 623 K (350{degree}C) reaction … more
Date: July 13, 1992
Creator: Shams, K. G.; Miller, R. L. & Baldwin, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vapor CdCl2-Optimization and Screening Experiments for an All Dry Chloride Treatment of CdS/CdTe Solar Cells

Description: A dry vapor treatment of CdCl2 is being developed as an alternative approach to the conventional solution CdCl2 treatment of CdS/CdTe devices. In this alternative process, the CdS/CdTe substrates are vapor treated in a close-spaced sublimation configuration. A 16-run Plackett-Burman screening experiment identified source temperature, substrate temperature, and treatment time as being the most significant parameters in the process. Subsequently, a 20-run Central Composite Design showed that a so… more
Date: October 1, 1998
Creator: Mahathongdy, Y.; Wolden, C. A.; Baldwin, R. M. & Albin, D. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment. Final technical report

Description: The findings in the first phase were as follows: 1. Both reductive (non-selective) alkylation and selective oxygen alkylation brought about an increase in liquefaction reactivity for both coals. 2. Selective oxygen alkylation is more effective in enhancing the reactivity of low rank coals. In the second phase of studies, the major findings were as follows: 1. Liquefaction reactivity increases with increasing level of alkylation for both hydroliquefaction and co-processing reaction conditions. 2… more
Date: December 1991
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment. Quarterly technical progress report, June--August 1991

Description: This report describes progress on research during the 12th and final quarter of this contract dealing with applications of coal pretreatment techniques in coal/oil co-processing and direct hydroliquefaction. The overall objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions… more
Date: 1991-09~
Creator: Baldwin, R. M.; Gaur, S. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment. Quarterly technical progress report, September--November 1989

Description: This report describes progress on research during the fifth quarter of this contract dealing with applications of coal pretreatment techniques in coal hydroliquefaction by co-processing. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing l… more
Date: 1989-12~
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment. Quarterly technical progress report, March--May 1990

Description: The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing low rank coals and low severity conditions (reaction temperatures generally less than 350{degrees}C) are the primary focus of the liquefaction experiments, as it is expected that the effec… more
Date: 1990-06~
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment. Quarterly technical progress report, June--August 1990

Description: This report describes progress on research during the seventh quarter of this contract dealing with applications of coal pretreatment techniques in coal hydroliquefaction. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing low rank coals a… more
Date: 1990-09~
Creator: Baldwin, R. M. & Miller, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhancing low severity coal liquefaction reactivity using mild chemical pretreatment. Quarterly technical progress report, December 1991--February 1992

Description: In this paper, we describe results from a study in which mild chemical pretreatment of coal has been used to enhance low severity liquefaction reactivity. We have found that ambient pretreatment of eight Argonne coals using methanol and a trace amount of hydrochloric acid improves THF-soluble conversions 24.5 wt% (maf basis) for Wyodak subbituminous coal and 28.4 wt% for Beulah-Zap lignite with an average increase of 14.9 wt% for liquefaction of the eight coals at 623 K (350{degree}C) reaction … more
Date: July 13, 1992
Creator: Shams, K. G.; Miller, R. L. & Baldwin, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen