Comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on flue gas of boiler
The invention discloses a comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on the flue gas of a boiler. Sodium hypochlorite which is low in price serves as an oxidation absorbent for purifying flue gas pollutants; SO2, NOx and Hg in the flue...
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| creator | SHI DAZHONG CHEN RONGLING QU YANNAN LIN HAIBO SHI DENGYU PEI YUFENG WU ZONG |
| description | The invention discloses a comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on the flue gas of a boiler. Sodium hypochlorite which is low in price serves as an oxidation absorbent for purifying flue gas pollutants; SO2, NOx and Hg in the flue gas are oxidized by virtue of a wet oxidization process; oxidation products and part of CO2 in the flue gas are converted into ammonium bicarbonate, ammonium sulfate, ammonium nitrate and mercuric sulfide products with certain economical values; a reduction product of the sodium hypochlorite, namely sodium chloride, is reused as a production raw material of the sodium hypochlorite, and the method is a green process for purification treatment on the flue gas of the boiler. The removal rate of SO2 in the flue gas treated by virtue of the method exceeds 99 percent, the removal rate of NOx exceeds 90 percent, the removal rate of Hg exceeds 95 percent, and the obtained products such as ammonium bicarbonate, ammonium sulfate, ammonium nitrate and HgS are industrial first-grade products, so that recycling is realized. |
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Sodium hypochlorite which is low in price serves as an oxidation absorbent for purifying flue gas pollutants; SO2, NOx and Hg in the flue gas are oxidized by virtue of a wet oxidization process; oxidation products and part of CO2 in the flue gas are converted into ammonium bicarbonate, ammonium sulfate, ammonium nitrate and mercuric sulfide products with certain economical values; a reduction product of the sodium hypochlorite, namely sodium chloride, is reused as a production raw material of the sodium hypochlorite, and the method is a green process for purification treatment on the flue gas of the boiler. The removal rate of SO2 in the flue gas treated by virtue of the method exceeds 99 percent, the removal rate of NOx exceeds 90 percent, the removal rate of Hg exceeds 95 percent, and the obtained products such as ammonium bicarbonate, ammonium sulfate, ammonium nitrate and HgS are industrial first-grade products, so that recycling is realized.</description><language>eng</language><subject>AMMONIA ; CHEMISTRY ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; COMPOUNDS THEREOF ; CYANOGEN ; INORGANIC CHEMISTRY ; METALLURGY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; TRANSPORTING</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150107&DB=EPODOC&CC=CN&NR=104258711A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150107&DB=EPODOC&CC=CN&NR=104258711A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SHI DAZHONG</creatorcontrib><creatorcontrib>CHEN RONGLING</creatorcontrib><creatorcontrib>QU YANNAN</creatorcontrib><creatorcontrib>LIN HAIBO</creatorcontrib><creatorcontrib>SHI DENGYU</creatorcontrib><creatorcontrib>PEI YUFENG</creatorcontrib><creatorcontrib>WU ZONG</creatorcontrib><title>Comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on flue gas of boiler</title><description>The invention discloses a comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on the flue gas of a boiler. Sodium hypochlorite which is low in price serves as an oxidation absorbent for purifying flue gas pollutants; SO2, NOx and Hg in the flue gas are oxidized by virtue of a wet oxidization process; oxidation products and part of CO2 in the flue gas are converted into ammonium bicarbonate, ammonium sulfate, ammonium nitrate and mercuric sulfide products with certain economical values; a reduction product of the sodium hypochlorite, namely sodium chloride, is reused as a production raw material of the sodium hypochlorite, and the method is a green process for purification treatment on the flue gas of the boiler. The removal rate of SO2 in the flue gas treated by virtue of the method exceeds 99 percent, the removal rate of NOx exceeds 90 percent, the removal rate of Hg exceeds 95 percent, and the obtained products such as ammonium bicarbonate, ammonium sulfate, ammonium nitrate and HgS are industrial first-grade products, so that recycling is realized.</description><subject>AMMONIA</subject><subject>CHEMISTRY</subject><subject>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</subject><subject>COMPOUNDS THEREOF</subject><subject>CYANOGEN</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2015</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi70KwkAQhNNYiPoOa69g_EFbCYqVlb2sl73k4G437N0FYuebK-IDWM18wzfj4lVJ6JRa4uh6gqSEKRAnCJRaqcGKgkHVwXEDkhPUFLO3Wd0TkxNefAZ2SX8QSE3WAZSC9OgBuf50Mxj__TNYnwkajCAWHuI86bQYWfSRZr-cFPPz6VZdltTJnWKHhpjSvbqWq-16d9iX5XHzj_MGP5BKdA</recordid><startdate>20150107</startdate><enddate>20150107</enddate><creator>SHI DAZHONG</creator><creator>CHEN RONGLING</creator><creator>QU YANNAN</creator><creator>LIN HAIBO</creator><creator>SHI DENGYU</creator><creator>PEI YUFENG</creator><creator>WU ZONG</creator><scope>EVB</scope></search><sort><creationdate>20150107</creationdate><title>Comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on flue gas of boiler</title><author>SHI DAZHONG ; CHEN RONGLING ; QU YANNAN ; LIN HAIBO ; SHI DENGYU ; PEI YUFENG ; WU ZONG</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN104258711A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2015</creationdate><topic>AMMONIA</topic><topic>CHEMISTRY</topic><topic>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</topic><topic>COMPOUNDS THEREOF</topic><topic>CYANOGEN</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>SHI DAZHONG</creatorcontrib><creatorcontrib>CHEN RONGLING</creatorcontrib><creatorcontrib>QU YANNAN</creatorcontrib><creatorcontrib>LIN HAIBO</creatorcontrib><creatorcontrib>SHI DENGYU</creatorcontrib><creatorcontrib>PEI YUFENG</creatorcontrib><creatorcontrib>WU ZONG</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SHI DAZHONG</au><au>CHEN RONGLING</au><au>QU YANNAN</au><au>LIN HAIBO</au><au>SHI DENGYU</au><au>PEI YUFENG</au><au>WU ZONG</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on flue gas of boiler</title><date>2015-01-07</date><risdate>2015</risdate><abstract>The invention discloses a comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on the flue gas of a boiler. Sodium hypochlorite which is low in price serves as an oxidation absorbent for purifying flue gas pollutants; SO2, NOx and Hg in the flue gas are oxidized by virtue of a wet oxidization process; oxidation products and part of CO2 in the flue gas are converted into ammonium bicarbonate, ammonium sulfate, ammonium nitrate and mercuric sulfide products with certain economical values; a reduction product of the sodium hypochlorite, namely sodium chloride, is reused as a production raw material of the sodium hypochlorite, and the method is a green process for purification treatment on the flue gas of the boiler. The removal rate of SO2 in the flue gas treated by virtue of the method exceeds 99 percent, the removal rate of NOx exceeds 90 percent, the removal rate of Hg exceeds 95 percent, and the obtained products such as ammonium bicarbonate, ammonium sulfate, ammonium nitrate and HgS are industrial first-grade products, so that recycling is realized.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AMMONIA CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM COMPOUNDS THEREOF CYANOGEN INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING |
| title | Comprehensive treatment method for carrying out desulfurization, denitration, mercury removal and recycling on flue gas of boiler |
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