Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon
The flue gas mercury removal experiment was carried out on a 0.3MW pilot scale circulating fluidized bed test facility by injecting biomass based activated carbon which is originally derived from rice husk and then modified by halogenated ammonium. Effects of exit temperature of the SCR and flue gas...
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State Grid Energy Research Institute
2019-10-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201901022 |
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| author | Jun TAO Xiaobing GU Tianfang HUANG Shuai LIU Peng HU Lu DONG Yaji HUANG Yufeng DUAN |
| author_facet | Jun TAO Xiaobing GU Tianfang HUANG Shuai LIU Peng HU Lu DONG Yaji HUANG Yufeng DUAN |
| author_sort | Jun TAO |
| collection | DOAJ |
| description | The flue gas mercury removal experiment was carried out on a 0.3MW pilot scale circulating fluidized bed test facility by injecting biomass based activated carbon which is originally derived from rice husk and then modified by halogenated ammonium. Effects of exit temperature of the SCR and flue gas, concentration of SO2 and NO on the injection demercuration efficiency were discussed. The ASTM Standard D 6784-02 (OHM Ontario Method) was applied to measure the concentration of mercury from the coal-fired flue gas. The results showed that both the mercury removal efficiency and elemental mercury conversion efficiency go up with the elevated flue gas temperature; The existence of NO can enhance the mercury removal effect but SO2 will inhibit it on the other way. The mercury removal efficiency could reach about 90% with this modified type of activated carbon sprayed into flue gas under the conditions of SCR inlet temperature in the range of 351~370 °C , flue gas temperature in the range of 191~210 °C, SO2 volume fraction of (293~602)×10–6, NO volume fraction of (588~893)×10–6, activated carbon injection quantity of 0.5 kg/h, reaction space velocity of 4 000 h–1, and flue gas flow rate of 400~500 m3/h. |
| format | Article |
| id | doaj-art-28dce83ad8e24641b17b099a56b8cd5b |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2019-10-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-28dce83ad8e24641b17b099a56b8cd5b2025-08-20T02:52:34ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492019-10-01521015015410.11930/j.issn.1004-9649.201901022zgdl-52-8-taojunEffect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated CarbonJun TAO0Xiaobing GU1Tianfang HUANG2Shuai LIU3Peng HU4Lu DONG5Yaji HUANG6Yufeng DUAN7Datang Environment Industry Group Co., Ltd., Beijing 100097, ChinaDatang Environment Industry Group Co., Ltd., Beijing 100097, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, ChinaThe flue gas mercury removal experiment was carried out on a 0.3MW pilot scale circulating fluidized bed test facility by injecting biomass based activated carbon which is originally derived from rice husk and then modified by halogenated ammonium. Effects of exit temperature of the SCR and flue gas, concentration of SO2 and NO on the injection demercuration efficiency were discussed. The ASTM Standard D 6784-02 (OHM Ontario Method) was applied to measure the concentration of mercury from the coal-fired flue gas. The results showed that both the mercury removal efficiency and elemental mercury conversion efficiency go up with the elevated flue gas temperature; The existence of NO can enhance the mercury removal effect but SO2 will inhibit it on the other way. The mercury removal efficiency could reach about 90% with this modified type of activated carbon sprayed into flue gas under the conditions of SCR inlet temperature in the range of 351~370 °C , flue gas temperature in the range of 191~210 °C, SO2 volume fraction of (293~602)×10–6, NO volume fraction of (588~893)×10–6, activated carbon injection quantity of 0.5 kg/h, reaction space velocity of 4 000 h–1, and flue gas flow rate of 400~500 m3/h.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201901022coal fired flue gasinjection demercurationnh4br modificationrice husk-derived activated carbonflue gas composition |
| spellingShingle | Jun TAO Xiaobing GU Tianfang HUANG Shuai LIU Peng HU Lu DONG Yaji HUANG Yufeng DUAN Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon Zhongguo dianli coal fired flue gas injection demercuration nh4br modification rice husk-derived activated carbon flue gas composition |
| title | Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon |
| title_full | Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon |
| title_fullStr | Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon |
| title_full_unstemmed | Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon |
| title_short | Effect of Flue Gas Composition on Mercury Removal by Injecting Rice Husk-Derived Activated Carbon |
| title_sort | effect of flue gas composition on mercury removal by injecting rice husk derived activated carbon |
| topic | coal fired flue gas injection demercuration nh4br modification rice husk-derived activated carbon flue gas composition |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201901022 |
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