A Calcium Oxide Sorbent Process for Bulk Separation of Carbon Dioxide. Quarterly Progress Report 11, April 1992--June 1992 PDF Download
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Languages : en
Pages : 10
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This research project is investigating the technical feasibility of a high-temperature, high-pressure (HTHP) process for the bulk separation of CO2 from coal-derived gas. Phase I research, which utilized an electrobalance reactor, was completed during the previous quarter and final experimental results have been reported. Phase II research involves a switch from the electrobalance reactor to a laboratory-scale fixed-bed reactor having feed and product gas analysis capability. Initial effort during Phase II has been limited to project planning including the design and construction of the fixed-bed reactor, developing specifications for gas analysis, and ordering the gas chromatograph system. These activities are described in the present report.
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Languages : en
Pages : 10
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Book Description
This research project is investigating the technical feasibility of a high-temperature, high-pressure (HTHP) process for the bulk separation of CO2 from coal-derived gas. Phase I research, which utilized an electrobalance reactor, was completed during the previous quarter and final experimental results have been reported. Phase II research involves a switch from the electrobalance reactor to a laboratory-scale fixed-bed reactor having feed and product gas analysis capability. Initial effort during Phase II has been limited to project planning including the design and construction of the fixed-bed reactor, developing specifications for gas analysis, and ordering the gas chromatograph system. These activities are described in the present report.
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Category : Power resources
Languages : en
Pages : 654
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Category :
Languages : en
Pages : 25
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Phase I research, in which an electrobalance reactor was used to establish the technical feasibility of the regenerable sorbent process, was completed in March 1992 and results have been fully described in earlier quarterly reports. In Phase I, the calcination and carbonation characteristics of three calcium sorbents were studied as a function of calcination and carbonation temperature and pressure, mol fraction CO2 in the carbonation gas, and carbonation background gas composition. Desirable reaction conditions required for high reactivity and good sorbent durability were determined. Multicycle tests consisting of as many as ten complete calcination and carbonation cycles were completed. Indirect evidence which suggested that the water-gas shift reaction occurred simultaneously with CO2 removal was found. Occurrence of the simultaneous reactions created the possibility of a direct one-step process for the manufacture of hydrogen from coal-gas while at the same time separating a concentrated stream of CO2. The concentrated CO2 stream could be quite significant if, in the future, environmental regulations restrict atmospheric CO2 emissions.
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Category :
Languages : en
Pages : 1190
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Category :
Languages : en
Pages :
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Category : Science
Languages : en
Pages : 1168
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Category :
Languages : en
Pages :
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Category :
Languages : en
Pages :
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Category :
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).
