{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,7,25]],"date-time":"2024-07-25T09:14:24Z","timestamp":1721898864137},"reference-count":55,"publisher":"IntechOpen","isbn-type":[{"value":"9781839685101","type":"print"},{"value":"9781839685118","type":"electronic"}],"license":[{"start":{"date-parts":[[2021,1,7]],"date-time":"2021-01-07T00:00:00Z","timestamp":1609977600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/legalcode"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>The chapter presents the issue of reducing mercury and nitrogen oxides emissions from the flue gas of coal-fired boilers. The issue is particularly relevant due to the stricter regulations regarding exhaust gas purity. A brief review of the methods for reducing Hg and NOx emissions has been made, pointing out their pros and cons. Against this background, the results of the authors\u2019 own research on the injection of selected oxidants into flue gases to remove both of these pollutants are presented. The injection of sodium chlorite solution into the flue gas (400 MWe lignite fired unit) upstream the wet flue gas desulphurization (WFGD) absorber contributed to the oxidation of both metallic mercury and nitric oxide and enhanced their removal efficiency. The results of tests on lignite and hard coal flue gases indicate that in order to reduce the unfavorable phenomenon of mercury re-emission from WFGD absorbers, in some cases, it is necessary to add selected chemical compounds (e.g., sulfides) to the desulfurization system. The results of field tests for flue gas from lignite (400 MWe unit) and hard coal-fired boilers (195 and 220 MWe units) confirmed the usefulness of oxidizer injection technology to reduce mercury emissions below the level required by BAT conclusions.<\/jats:p>","DOI":"10.5772\/intechopen.92342","type":"book-chapter","created":{"date-parts":[[2020,5,28]],"date-time":"2020-05-28T09:48:56Z","timestamp":1590659336000},"source":"Crossref","is-referenced-by-count":1,"title":["Methods to Reduce Mercury and Nitrogen Oxides Emissions from Coal Combustion Processes"],"prefix":"10.5772","author":[{"given":"Maria","family":"J\u0119drusik","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dariusz","family":"\u0141uszkiewicz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arkadiusz","family":"\u015awierczok","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"3774","published-online":{"date-parts":[[2021,1,7]]},"reference":[{"key":"ref=1","unstructured":"Global Mercury Assessment. 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