So2 + H2 = H2S + H2O

     
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Abstract

The theoretical & experimental investigation of the mechanism of SO2 & H2S removal by CaCO3 -based sorbents (limestones and dolomites) in pressurized uidized-bed coal combustors (PFBC) và high pressure gasi ers, respectively, is the main objective of this study. It is planned to carry out reactivity evolution experiments under simulated high pressure conditions or in high pressure thermogravimetric and, if needed, uidized- bed reactor (high pressure) arrangements. The pore structure of fresh, heat-treated, và half-calcined solids (dolomites) will be analyzed using a variety of methods. Our work will focus on limestones và dolomites whose reaction with SO2 or H2S under atmospheric conditions has been studied by us or other research groups in past studies. Several theoret- ical tools will be employed khổng lồ analyze the obtained experimental data including a variable di usivity shrinking-core model and models for di usion, reaction, và structure evolution in chemically reacting porous solids. During the six months of this reporting period, work was primarily done on the study of the behavior of the sul dation of limestones under sequential calcination conditions in the presence of small amounts of oxygen và the development of a stochastic simulation code for determining the extent of pore volume trappingmore» (formation of inaccessible pore space) in gas-solid reactions accompanied by pore volume reduction such as the sulfation and sul dation of calcined limestones & dolomites. The incentive for carrying out sul dation experiments in the presence of oxygen was provided by the observation that some sul dation experiments that were conducted as oxygen was accidentally leaking into the feed mixture of the reactor showed completely di erent behavior from that obtained in the absence of oxygen. Experiments were carried out in the thermogravimetric analysis system that we developed for studying gas-solid reactions at atmospheric or subambient pressures. The two CaCO3 solids (Greer limestone và Iceland spar) that we employed in our previous experiments were used in the sulfidation.«less


Authors: Sotirchos, Stratis V Publication Date: Sun Feb 01 00:00:00 EST 1998 Research Org.: Federal Energy công nghệ Center, Morgantown, WV, and Pittsburgh, page authority (United States) Sponsoring Org.: USDOE thuphikhongdung.vn Identifier: 2297 Report Number(s): DE-FG22-95PC95217-05 ON: DE00002297 DOE Contract Number: FG22-95PC95217 Resource Type: Technical Report Country of Publication: United States Language: English Subject: 01 COAL, LIGNITE, & PEAT; Hydrogen Sulfides; Sulfur Dioxide; Removal
Sotirchos, Stratis V. Removal of H2S and SO2 by CaCO3-Based Sorbents at High Pressure. United States: N. P., 1998. Web. Doi:10.2172/2297.


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Sotirchos, Stratis V. Removal of H2S và SO2 by CaCO3-Based Sorbents at High Pressure. United States. Https://doi.org/10.2172/2297
Sotirchos, Stratis V. 1998. "Removal of H2S and SO2 by CaCO3-Based Sorbents at High Pressure". United States. Https://doi.org/10.2172/2297. Https://www.thuphikhongdung.vn/servlets/purl/2297.


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articlethuphikhongdung.vn_2297, title = Removal of H2S and SO2 by CaCO3-Based Sorbents at High Pressure, author = Sotirchos, Stratis V, abstractNote = The theoretical và experimental investigation of the mechanism of SO2 & H2S removal by CaCO3 -based sorbents (limestones và dolomites) in pressurized uidized-bed coal combustors (PFBC) & high pressure gasi ers, respectively, is the main objective of this study. It is planned to carry out reactivity evolution experiments under simulated high pressure conditions or in high pressure thermogravimetric and, if needed, uidized- bed reactor (high pressure) arrangements. The pore structure of fresh, heat-treated, và half-calcined solids (dolomites) will be analyzed using a variety of methods. Our work will focus on limestones & dolomites whose reaction with SO2 or H2S under atmospheric conditions has been studied by us or other research groups in past studies. Several theoret- ical tools will be employed to lớn analyze the obtained experimental data including a variable di usivity shrinking-core mã sản phẩm and models for di usion, reaction, & structure evolution in chemically reacting porous solids. During the six months of this reporting period, work was primarily done on the study of the behavior of the sul dation of limestones under sequential calcination conditions in the presence of small amounts of oxygen và the development of a stochastic simulation code for determining the extent of pore volume trapping (formation of inaccessible pore space) in gas-solid reactions accompanied by pore volume reduction such as the sulfation & sul dation of calcined limestones and dolomites. The incentive for carrying out sul dation experiments in the presence of oxygen was provided by the observation that some sul dation experiments that were conducted as oxygen was accidentally leaking into the feed mixture of the reactor showed completely di erent behavior from that obtained in the absence of oxygen. Experiments were carried out in the thermogravimetric analysis system that we developed for studying gas-solid reactions at atmospheric or subambient pressures. The two CaCO3 solids (Greer limestone and Iceland spar) that we employed in our previous experiments were used in the sulfidation., doi = 10.2172/2297, url = https://www.thuphikhongdung.vn/biblio/2297, journal = ,number = , volume = , place = United States, year = Sun Feb 01 00:00:00 EST 1998, month = Sun Feb 01 00:00:00 EST 1998