{"id":98776,"date":"2021-07-05T13:39:10","date_gmt":"2021-07-05T05:39:10","guid":{"rendered":"https:\/\/www.alpapowder.com\/etude-de-cas\/desulfuration-des-fumees\/"},"modified":"2022-05-12T16:19:01","modified_gmt":"2022-05-12T08:19:01","slug":"desulfuration-des-fumees","status":"publish","type":"page","link":"https:\/\/www.alpapowder.com\/fr\/etude-de-cas\/desulfuration-des-fumees\/","title":{"rendered":"D\u00e9sulfuration des fum\u00e9es"},"content":{"rendered":"

[vc_row unlock_row_content=\u00a0\u00bbyes\u00a0\u00bb row_height_percent=\u00a0\u00bb80″ override_padding=\u00a0\u00bbyes\u00a0\u00bb h_padding=\u00a0\u00bb0″ top_padding=\u00a0\u00bb0″ bottom_padding=\u00a0\u00bb0″ overlay_alpha=\u00a0\u00bb50″ equal_height=\u00a0\u00bbyes\u00a0\u00bb gutter_size=\u00a0\u00bb0″ column_width_percent=\u00a0\u00bb100″ shift_y=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″][vc_column column_width_percent=\u00a0\u00bb100″ position_vertical=\u00a0\u00bbmiddle\u00a0\u00bb gutter_size=\u00a0\u00bb3″ override_padding=\u00a0\u00bbyes\u00a0\u00bb column_padding=\u00a0\u00bb4″ style=\u00a0\u00bbdark\u00a0\u00bb back_color=\u00a0\u00bbaccent\u00a0\u00bb overlay_alpha=\u00a0\u00bb80″ shift_x=\u00a0\u00bb0″ shift_y=\u00a0\u00bb0″ shift_y_down=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″ medium_width=\u00a0\u00bb0″ mobile_width=\u00a0\u00bb0″ width=\u00a0\u00bb1\/2″][vc_custom_heading heading_semantic=\u00a0\u00bbh1″ text_size=\u00a0\u00bbh1″]Principe fondamental du bicarbonate de soude (bicarbonate de sodium) utilis\u00e9 pour la d\u00e9sulfuration des fum\u00e9es[\/vc_custom_heading][vc_column_text]Le bicarbonate de sodium (bicarbonate de soude, NaHCO3<\/sub>) peut \u00eatre utilis\u00e9 comme adsorbant pour la d\u00e9sulfuration des fum\u00e9es. Il \u00e9limine les polluants acides contenus dans les fum\u00e9es par adsorption chimique, tout en \u00e9liminant certaines substances traces inorganiques et organiques par adsorption physique. La fine poudre de bicarbonate de sodium est pulv\u00e9ris\u00e9e directement dans les gaz de combustion \u00e0 haute temp\u00e9rature, et le bicarbonate de sodium est d\u00e9compos\u00e9 \u00e0 haute temp\u00e9rature pour produire du carbonate de sodium Na2<\/sub>CO3<\/sub>, H2<\/sub>O et\u00a0CO2<\/sub>.<\/p>\n

NaHCO3<\/sub>\u00a0+ HCl \u2192 NaCl + H2<\/sub>O + CO2<\/sub>
\n2NaHCO3<\/sub>\u00a0+ SO2<\/sub>\u00a0+ \u00bd O2<\/sub>\u00a0\u2192 Na2<\/sub>SO4<\/sub>\u00a0+ H2<\/sub>O + 2CO2<\/sub>
\nNaHCO3<\/sub>\u00a0+ HF \u2192 NaF + H2<\/sub>O + CO2<\/sub><\/p>\n

G\u00e9n\u00e9ralement, la temp\u00e9rature des fum\u00e9es est comprise entre 140 et 250 \u00b0C. En raison de la forte activit\u00e9 des adsorbants de bicarbonate de sodium, un l\u00e9ger exc\u00e8s de bicarbonate de sodium (avec un facteur stoechiom\u00e9trique compris entre 1,1 et 1,3) est g\u00e9n\u00e9ralement suffisant.<\/p>\n

Pour des raisons de transport et de stockage, les mati\u00e8res premi\u00e8res de bicarbonate de sodium sont g\u00e9n\u00e9ralement des particules grossi\u00e8res (la valeur D50 est d’environ 200 microns). Pour atteindre une plus grande r\u00e9activit\u00e9, l’adsorbant doit avoir une surface sp\u00e9cifique plus importante, c’est pourquoi le bicarbonate de sodium doit \u00eatre broy\u00e9 \u00e0 une certaine finesse avant d’\u00eatre inject\u00e9 dans le conduit de fum\u00e9es. Par exemple, pour \u00e9liminer le SO2<\/sub>, la finesse du bicarbonate de sodium doit atteindre D90 <20\u03bcm ; et pour \u00e9liminer le HCl, seul D90 <35\u03bcm est n\u00e9cessaire. Si le syst\u00e8me fonctionne correctement, il peut \u00e9liminer plus de 95 % de SO2<\/sub>, le taux d’\u00e9limination de HCl peut m\u00eame atteindre 99 %.[\/vc_column_text][\/vc_column][vc_column column_width_percent=\u00a0\u00bb100″ position_vertical=\u00a0\u00bbmiddle\u00a0\u00bb align_horizontal=\u00a0\u00bbalign_center\u00a0\u00bb gutter_size=\u00a0\u00bb3″ override_padding=\u00a0\u00bbyes\u00a0\u00bb column_padding=\u00a0\u00bb0″ back_color=\u00a0\u00bbcolor-jevc\u00a0\u00bb back_image=\u00a0\u00bb116253″ overlay_color=\u00a0\u00bbcolor-jevc\u00a0\u00bb overlay_alpha=\u00a0\u00bb50″ shift_x=\u00a0\u00bb0″ shift_y=\u00a0\u00bb0″ shift_y_down=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″ align_medium=\u00a0\u00bbalign_center_tablet\u00a0\u00bb medium_width=\u00a0\u00bb0″ align_mobile=\u00a0\u00bbalign_center_mobile\u00a0\u00bb mobile_width=\u00a0\u00bb0″ width=\u00a0\u00bb1\/2″ uncode_shortcode_id=\u00a0\u00bb191615″ back_color_type=\u00a0\u00bbuncode-palette\u00a0\u00bb 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inside_column=\u00a0\u00bbyes\u00a0\u00bb][uncode_index el_id=\u00a0\u00bbindex-1041816597″ isotope_mode=\u00a0\u00bbfitRows\u00a0\u00bb loop=\u00a0\u00bbsize:30|order_by:date|post_type:project|tax_query:106|taxonomy_count:10″ gutter_size=\u00a0\u00bb3″ post_items=\u00a0\u00bbmedia|featured|onpost|poster,title,text|excerpt|75″ product_items=\u00a0\u00bbtitle,price,media|featured|onpost|original\u00a0\u00bb portfolio_items=\u00a0\u00bbtitle,media|featured|onpost|original\u00a0\u00bb project_items=\u00a0\u00bbtitle,media|media|onpost|original,text|excerpt,icon|sm,acf-field_607e48db91dd6,spacer|half\u00a0\u00bb screen_lg=\u00a0\u00bb1000″ screen_md=\u00a0\u00bb600″ screen_sm=\u00a0\u00bb300″ single_width=\u00a0\u00bb6″ images_size=\u00a0\u00bbsixteen-nine\u00a0\u00bb single_overlay_color=\u00a0\u00bbcolor-jevc\u00a0\u00bb single_overlay_opacity=\u00a0\u00bb50″ single_text_anim_type=\u00a0\u00bbbtt\u00a0\u00bb single_padding=\u00a0\u00bb1″ single_title_dimension=\u00a0\u00bbh5″ 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shift_y=\u00a0\u00bb0″ shift_y_down=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″ medium_width=\u00a0\u00bb0″ mobile_width=\u00a0\u00bb0″ css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb sticky=\u00a0\u00bbyes\u00a0\u00bb width=\u00a0\u00bb1\/2″][uncode_index el_id=\u00a0\u00bbindex-131707″ loop=\u00a0\u00bbsize:10|order_by:date|post_type:portfolio|by_id:96126|taxonomy_count:10″ gutter_size=\u00a0\u00bb3″ portfolio_items=\u00a0\u00bbtitle,media|featured|onpost|original,acf-field_608bc5c592a93,spacer|half,link|default-shape|small_size|Apprendre encore plus\u00a0\u00bb screen_lg=\u00a0\u00bb1000″ screen_md=\u00a0\u00bb600″ screen_sm=\u00a0\u00bb480″ single_text=\u00a0\u00bboverlay\u00a0\u00bb single_width=\u00a0\u00bb12″ single_style=\u00a0\u00bbdark\u00a0\u00bb single_overlay_opacity=\u00a0\u00bb50″ single_overlay_anim=\u00a0\u00bbno\u00a0\u00bb single_h_align=\u00a0\u00bbright\u00a0\u00bb single_padding=\u00a0\u00bb2″ single_title_dimension=\u00a0\u00bbh4″ single_border=\u00a0\u00bbyes\u00a0\u00bb][\/vc_column][vc_column column_width_percent=\u00a0\u00bb100″ position_vertical=\u00a0\u00bbmiddle\u00a0\u00bb gutter_size=\u00a0\u00bb2″ override_padding=\u00a0\u00bbyes\u00a0\u00bb column_padding=\u00a0\u00bb4″ style=\u00a0\u00bbdark\u00a0\u00bb back_color=\u00a0\u00bbaccent\u00a0\u00bb overlay_alpha=\u00a0\u00bb50″ shift_x=\u00a0\u00bb0″ shift_y=\u00a0\u00bb0″ shift_y_down=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″ medium_width=\u00a0\u00bb0″ mobile_width=\u00a0\u00bb0″ css_animation=\u00a0\u00bbbottom-t-top\u00a0\u00bb animation_delay=\u00a0\u00bb200″ width=\u00a0\u00bb1\/2″][uncode_block id=\u00a0\u00bb85796″ inside_column=\u00a0\u00bbyes\u00a0\u00bb][vc_empty_space empty_h=\u00a0\u00bb2″][vc_column_text]Faible taux d’\u00e9chec et fonctionnement stable
\n<\/strong>Il convient pour un fonctionnement continu, avec une dur\u00e9e de fonctionnement annuelle de plus de 8000 heures.[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Ajustement automatique de la quantit\u00e9 d’injection de d\u00e9sulfurateur
\n<\/strong>Il peut surveiller la fluctuation de la concentration de substances nocives dans les fum\u00e9es en temps r\u00e9el et ajuster automatiquement la quantit\u00e9 d’agent de d\u00e9sulfuration inject\u00e9e.[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Conception d’admission \u00e0 grand volume d’air
\n<\/strong>La temp\u00e9rature de broyage peut \u00eatre abaiss\u00e9e. S’il y a une exigence de temp\u00e9rature plus \u00e9lev\u00e9e, un dispositif d’air froid peut \u00eatre s\u00e9lectionn\u00e9.[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Propre et respectueux de l’environnement
\n<\/strong>L’ensemble du syst\u00e8me est scell\u00e9 et \u00e9cras\u00e9, avec moins de poussi\u00e8re, un faible bruit et le processus de production est propre et respectueux de l’environnement..[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Non-irritant, non-toxique
\n<\/strong>Les additifs (bicarbonate de sodium) et les r\u00e9sidus sont non irritants et non toxiques.<\/p>\n

[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Facile \u00e0 d\u00e9monter et \u00e0 laver
\n<\/strong>La structure est compacte et le moulin et le ventilateur sont faciles \u00e0 d\u00e9monter et \u00e0 laver. Le nettoyage en ligne peut \u00eatre s\u00e9lectionn\u00e9 pour \u00e9viter le collage et le blocage du mat\u00e9riau et r\u00e9duire les temps d’arr\u00eat.[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Syst\u00e8me de contr\u00f4le intelligent
\n<\/strong>\u00c0 l’aide de l’op\u00e9ration \u00e0 une touche, vous pouvez surveiller en ligne des param\u00e8tres cl\u00e9s tels que la concentration de dioxyde de soufre, le volume d’air du syst\u00e8me, le volume d’alimentation, la temp\u00e9rature de broyage, etc.[\/vc_column_text][vc_separator sep_color=\u00a0\u00bbcolor-146634″][vc_column_text]Conception int\u00e9gr\u00e9e du concassage et de la classification
\n<\/strong>Vous pouvez obtenir la granulom\u00e9trie id\u00e9ale du produit en ajustant la vitesse de la roue de calibrage.<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"

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