The MAGSORB Process for Bulk Separation of Carbon Dioxide. Final Report PDF Download
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Languages : en
Pages : 93
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Book Description
The experimental work performed in this program has revealed the impact of formulation procedure on MAGSORB properties, and has shown that the sorbent has adequate potential as a CO2 sorbent for synthesis gas production. MAGSORB is a highly selective CO2 sorbent that does not react with other synthesis gas components (H2, CO, H2O, H2S, or NH3), nor is its performance adversely affected by these components. A technoeconomic analysis has shown that the integration of MAGSORB into a syngas conditioning train can result in significant capital and operating cost benefits when compared with conventional technology. Several areas of further development are still needed. The laboratory preparation method used in this program may not be optimal in terms of sorbent properties and practicality on a commercial scale. Alternative methods involving co-precipitation or co-crystallization of MgCO3 and K2CO3 should be investigated. The life-cycle tests have shown that the sorbent as make in this study loses reactivity after absorption/desorption cycling. A fundamental study of surface properties should be made to determine the cause of deactivation. Specific recommendations for future MAGSORB development activities are given.
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Languages : en
Pages : 93
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Book Description
The experimental work performed in this program has revealed the impact of formulation procedure on MAGSORB properties, and has shown that the sorbent has adequate potential as a CO2 sorbent for synthesis gas production. MAGSORB is a highly selective CO2 sorbent that does not react with other synthesis gas components (H2, CO, H2O, H2S, or NH3), nor is its performance adversely affected by these components. A technoeconomic analysis has shown that the integration of MAGSORB into a syngas conditioning train can result in significant capital and operating cost benefits when compared with conventional technology. Several areas of further development are still needed. The laboratory preparation method used in this program may not be optimal in terms of sorbent properties and practicality on a commercial scale. Alternative methods involving co-precipitation or co-crystallization of MgCO3 and K2CO3 should be investigated. The life-cycle tests have shown that the sorbent as make in this study loses reactivity after absorption/desorption cycling. A fundamental study of surface properties should be made to determine the cause of deactivation. Specific recommendations for future MAGSORB development activities are given.
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Languages : en
Pages : 11
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During the sixth quarter of this program, work continued on the preparation of homogeneous batches of sorbent. It had previously been found that there was not consistent agreement between the Mg/K ratios calculated from the amounts of reagents used and the ratios determined by chemical analysis using atomic absorption spectrometry. In our investigation of the causes of these inconsistencies, we also found that there was an unacceptably high variation in the Mg/K ratio among the individual sorbent pellets. This quarter, sorbent pellets that had shown excessive variation in the Mg/K ratio were ground and the powder mixed to produce a uniform material. This material was then pelletized with a compaction device and the pellets checked for composition and reactivity. Although this procedure produced pellets with consistent Mg/K ratios, thermobalance tests showed reduced reactivity.
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Languages : en
Pages : 13
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Objective was to investigate the removal of CO2 from fuel gas produced by a coal gasifier, with a K2CO3-modified MgO sorbent. During this period, 12 successful thermobalance tests were conducted. Results with a K-free MgO standard confirmed the role of K for effective CO2 absorption. The other tests were made with varying gas mixtures.
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Languages : en
Pages : 5
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Objective is to study the removal of CO2 from a fuel gas produced by a coal gasifier, with a K2CO3-modified MgO sorbent. During this period, the packed-bed reactor was completed. Three sorbent batches were prepared, six packed-bed tests were conducted, and thermobalance testing was completed. Betchel completed a cost estimate for the MAGSORB unit in a coal gasification/methanol synthesis plant. The use of MAGSORB offers three potential advantages over conventional processes: lower heat losses, simplified desulfurization, and potential integration with advanced hot gas desulfurization.
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Languages : en
Pages : 37
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Objective is to investigate the removal of CO2 from a fuel gas produced by a coal gasifier with a K2CO3-modified MgO sorbent. The work consists of measuring the capacity and rates of absorption of the sorbent vs T, P, and gaseous contaminants. Effects of repeated absorption/desorption cycling on sorbent properties will be studied. During this first quarter, the Test Plan was prepared and approved. The thermobalance was prepared, and the first sorbent batch was formulated and subjected to adsorption/desorption thermobalance tests (results showed CO2 absorption at 800 F above 400 psi).
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Languages : en
Pages : 11
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Book Description
During the sixth quarter of this program, work continued on the preparation of homogeneous batches of sorbent. It had previously been found that there was not consistent agreement between the Mg/K ratios calculated from the amounts of reagents used and the ratios determined by chemical analysis using atomic absorption spectrometry. In our investigation of the causes of these inconsistencies, we also found that there was an unacceptably high variation in the Mg/K ratio among the individual sorbent pellets. This quarter, sorbent pellets that had shown excessive variation in the Mg/K ratio were ground and the powder mixed to produce a uniform material. This material was then pelletized with a compaction device and the pellets checked for composition and reactivity. Although this procedure produced pellets with consistent Mg/K ratios, thermobalance tests showed reduced reactivity.
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Category : Power resources
Languages : en
Pages : 754
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Category : Research
Languages : en
Pages : 1190
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Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
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Category :
Languages : en
Pages :
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Category : Aeronautics
Languages : en
Pages : 814
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