The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed
The article presents the effects of mechanical and thermal modification on the surface area of sodium bicarbonate and its ability to remove SO2 and HCl from exhaust fumes. The mechanical modification consisted of grinding in an impact mill. The thermal modification consisted...
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| Format: | Article |
| Language: | English |
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Croatian Society of Chemical Engineers
2017-10-01
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| Series: | Chemical and Biochemical Engineering Quarterly |
| Subjects: | |
| Online Access: | http://silverstripe.fkit.hr/cabeq/assets/Uploads/08-3-17.pdf |
| _version_ | 1819142487939219456 |
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| author | A. Pajdak B. Walawska A. Szymanek |
| author_facet | A. Pajdak B. Walawska A. Szymanek |
| author_sort | A. Pajdak |
| collection | DOAJ |
| description | The article presents the effects of mechanical and thermal modification on the surface area of sodium bicarbonate and its ability to remove SO2 and HCl from exhaust fumes.
The mechanical modification consisted of grinding in an impact mill. The thermal modification consisted of heating in the temperature range from 373 K to 673 K. The applied modifications caused a change in the grain structure of sodium bicarbonate and parameters such as specific surface area and the pore size. The parameters were determined by low-pressure nitrogen adsorption (LPNA) and mercury porosimetry (MIP) methods. The largest development of the active surface, which was up to 6 m2 g–1 (LPNA), was achieved after crushing and heating in the temperature range of 423–523 K.
The efficiency of a simultaneous purification of fumes from SO2
and HCl on a continuous-combustion installation with a circular fluidised bed CFB was determined. The samples were fed into the installation in three different molar ratios 2Na/S (0.5; 1.0; 2.1)
in a gas jet of 573 K. It was shown that the removal of SO2 and HCl took place simultaneously and mainly on the grain surface. The average efficiency of SO2 purification was between 17 % and 89 %, and it depended on the comminution degree and the amount of the sorbent. The efficiency of HCl removal was between 54 and 78 %. |
| first_indexed | 2024-12-22T12:11:08Z |
| format | Article |
| id | doaj.art-cc4f0cc05aa14b6083cf74a933abc0af |
| institution | Directory Open Access Journal |
| issn | 0352-9568 1846-5153 |
| language | English |
| last_indexed | 2024-12-22T12:11:08Z |
| publishDate | 2017-10-01 |
| publisher | Croatian Society of Chemical Engineers |
| record_format | Article |
| series | Chemical and Biochemical Engineering Quarterly |
| spelling | doaj.art-cc4f0cc05aa14b6083cf74a933abc0af2022-12-21T18:26:18ZengCroatian Society of Chemical EngineersChemical and Biochemical Engineering Quarterly0352-95681846-51532017-10-0131326127310.15255/CABEQ.2015.2305The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised BedA. Pajdak0B. Walawska1A. Szymanek2The Strata Mechanics Research Institute of the Polish Academy of Sciences, Reymonta 27, 30-059 Krakow, PolandInorganic Chemistry Division “IChN” in Gliwice, New Chemical Syntheses Institute, Sowińskiego 11, 44-101 Gliwice, PolandInstitute of Thermal Machinery, Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Dąbrowskiego 69, 42-200 Czestochowa, PolandThe article presents the effects of mechanical and thermal modification on the surface area of sodium bicarbonate and its ability to remove SO2 and HCl from exhaust fumes. The mechanical modification consisted of grinding in an impact mill. The thermal modification consisted of heating in the temperature range from 373 K to 673 K. The applied modifications caused a change in the grain structure of sodium bicarbonate and parameters such as specific surface area and the pore size. The parameters were determined by low-pressure nitrogen adsorption (LPNA) and mercury porosimetry (MIP) methods. The largest development of the active surface, which was up to 6 m2 g–1 (LPNA), was achieved after crushing and heating in the temperature range of 423–523 K. The efficiency of a simultaneous purification of fumes from SO2 and HCl on a continuous-combustion installation with a circular fluidised bed CFB was determined. The samples were fed into the installation in three different molar ratios 2Na/S (0.5; 1.0; 2.1) in a gas jet of 573 K. It was shown that the removal of SO2 and HCl took place simultaneously and mainly on the grain surface. The average efficiency of SO2 purification was between 17 % and 89 %, and it depended on the comminution degree and the amount of the sorbent. The efficiency of HCl removal was between 54 and 78 %.http://silverstripe.fkit.hr/cabeq/assets/Uploads/08-3-17.pdfsodium bicarbonatepurification of fumesremoval of SO 2 and HCl |
| spellingShingle | A. Pajdak B. Walawska A. Szymanek The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed Chemical and Biochemical Engineering Quarterly sodium bicarbonate purification of fumes removal of SO 2 and HCl |
| title | The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed |
| title_full | The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed |
| title_fullStr | The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed |
| title_full_unstemmed | The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed |
| title_short | The Effect of Structure Modification of Sodium Compounds on the SO 2 and HCl Removal Efficiency from Fumes in the Conditions of Circulating Fluidised Bed |
| title_sort | effect of structure modification of sodium compounds on the so 2 and hcl removal efficiency from fumes in the conditions of circulating fluidised bed |
| topic | sodium bicarbonate purification of fumes removal of SO 2 and HCl |
| url | http://silverstripe.fkit.hr/cabeq/assets/Uploads/08-3-17.pdf |
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