{"id":9911,"date":"2022-01-27T10:53:00","date_gmt":"2022-01-27T02:53:00","guid":{"rendered":"https:\/\/www.zonelenviro.com\/les-polluants-atmospheriques-issus-de-la-production-de-ciment-et-les-solutions-appropriees\/"},"modified":"2026-04-21T13:59:07","modified_gmt":"2026-04-21T05:59:07","slug":"les-polluants-atmospheriques-issus-de-la-production-de-ciment-et-les-solutions-appropriees","status":"publish","type":"post","link":"https:\/\/www.zonelenviro.com\/fr\/les-polluants-atmospheriques-issus-de-la-production-de-ciment-et-les-solutions-appropriees\/","title":{"rendered":"Les polluants atmosph\u00e9riques issus de la production de ciment et les solutions appropri\u00e9es"},"content":{"rendered":"<p><b>Les polluants atmosph\u00e9riques issus de la production de ciment et les solutions correspondantes.<\/b><b><br \/><\/b><span style=\"font-weight: 400;\">Les polluants atmosph\u00e9riques issus de la production de ciment sont principalement des poussi\u00e8res et des gaz de combustion.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">La poussi\u00e8re provient principalement des proc\u00e9d\u00e9s suivants\u00a0:<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">1. Pr\u00e9paration des mati\u00e8res premi\u00e8res<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">A. \u00c9crasement de CaCO3.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">B. S\u00e9chage de l&#8217;argile<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">C. Broyage et alimentation du charbon.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">D. Broyage des aliments crus.<\/span><\/p>\n<ol start=\"2\">\n<li><span style=\"font-weight: 400;\"> Le syst\u00e8me de combustion du clinker va \u00e9vacuer une grande quantit\u00e9 d&#8217;air poussi\u00e9reux.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> Le processus de production final :<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">A. Les cimenteries<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">B. Le garnissage en ciment<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">C. Le transport du ciment en vrac.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Pour la pr\u00e9paration des mati\u00e8res premi\u00e8res A, C, D et le processus de production final, l&#8217;air poussi\u00e9reux arrive \u00e0 une temp\u00e9rature plus basse, mais pour la pr\u00e9paration des mati\u00e8res premi\u00e8res B, l&#8217;air poussi\u00e9reux \u00e9vacu\u00e9 de la t\u00eate et de la queue du four est toujours \u00e0 une temp\u00e9rature plus \u00e9lev\u00e9e.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les particules pr\u00e9sentes dans l&#8217;air poussi\u00e9reux sont principalement compos\u00e9es de CaCO3, CaO, SiO2, Fe2O3, Al2O3, MgO, Na2O, K2O, etc.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les gaz de combustion issus de la production de ciment sont principalement compos\u00e9s de SO2, NOx, CO2, HF, etc., provenant de la d\u00e9composition du CaCO3 et de la combustion du combustible.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le SO2 provient des tourteaux crus (poudre de tourteau cru noir ou semi-noir pour four vertical), de la combustion du combustible ;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Les NOx proviennent de la r\u00e9action entre le N2 et l&#8217;oxyg\u00e8ne \u00e0 haute temp\u00e9rature ;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Le HF provient de la composition fluor\u00e9e issue de la d\u00e9composition du repas cru lors du processus d&#8217;incin\u00e9ration, par exemple m\u00e9lang\u00e9 \u00e0 de la fluorite comme min\u00e9ralisateur dans le four vertical.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le CO2 provient principalement de la d\u00e9composition du CaCO3, de la combustion du carburant, etc.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Solutions :<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">1. Pour le contr\u00f4le de l&#8217;air et de la poussi\u00e8re<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Zonel Filtech propose des d\u00e9poussi\u00e9reurs \u00e0 sacs filtrants pour purifier l&#8217;air et fournit \u00e9galement les accessoires n\u00e9cessaires en fonction des besoins du client.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Les filtres \u00e0 sacs de Zonel Filtech offrent une efficacit\u00e9 de filtration \u00e9lev\u00e9e, m\u00eame pour les particules de 0,5 micron, l&#8217;efficacit\u00e9 de filtration pouvant atteindre 99,99 %, et les filtres ont toujours des performances stables et sont tr\u00e8s faciles \u00e0 entretenir.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Le filtre \u00e0 sacs de marque Zonel peut collecter les poussi\u00e8res que le filtre Cottrell ne peut pas capturer, comme les poussi\u00e8res ayant une conductivit\u00e9 tr\u00e8s bonne ou tr\u00e8s mauvaise.<\/span><\/p>\n<ol start=\"2\">\n<li><span style=\"font-weight: 400;\"> Pour le contr\u00f4le des gaz de combustion<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">CO2\u00a0: am\u00e9liorer la qualit\u00e9 du clinker\u00a0; r\u00e9duire la consommation de clinker, par exemple en d\u00e9veloppant des mat\u00e9riaux de m\u00e9lange aux propri\u00e9t\u00e9s similaires \u00e0 celles du ciment, en utilisant des substituts de ciment \u00e9cologiques pour r\u00e9duire la consommation de ciment\u00a0; d\u00e9velopper de meilleurs syst\u00e8mes de valorisation de la chaleur r\u00e9siduelle, par exemple en utilisant cette chaleur pour s\u00e9cher les mati\u00e8res premi\u00e8res, pour produire de l\u2019\u00e9lectricit\u00e9, etc.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">SO2 :<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Changer la mati\u00e8re premi\u00e8re pour une meilleure qualit\u00e9, r\u00e9duire la teneur en soufre ;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Absorption au niveau des broyeurs de mati\u00e8res premi\u00e8res\u00a0: l\u2019air poussi\u00e9reux provenant de la sortie du four est achemin\u00e9 vers les broyeurs de mati\u00e8res premi\u00e8res\u00a0; la r\u00e9action est la suivante\u00a0:<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">CaCO3 + SO2 = CaSO3 + CO2<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">2 CaCO3 + 2 SO2 + O2 = 2 CaSO4 + 2 CO2<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">M\u00e9langer du Ca(OH)2 ;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">\u00c9quiper la colonne de douche ;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Et la solution la plus efficace consiste \u00e0 choisir une proportion appropri\u00e9e de soufre et d&#8217;alcali\u00a0;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Dans le m\u00eame temps, \u00e0 la sortie du four, \u00e9quipez le d\u00e9poussi\u00e9reur \u00e0 sacs filtrants ; le Na2O et le K2O pr\u00e9sents \u00e0 la surface des sacs filtrants r\u00e9agiront avec le SO2 et le NO2, et la teneur en acide de l&#8217;air pourra \u00eatre r\u00e9duite de 30 \u00e0 60 %.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NOx :<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Maintenir une temp\u00e9rature ad\u00e9quate, contr\u00f4ler le volume d&#8217;air ;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Utilisez un gaz r\u00e9ducteur, tel que CO, H2, etc., et m\u00e9langez du Fe2O3 et de l&#8217;Al2O3 aux aliments crus, ce qui peut r\u00e9duire les NOx en N2.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">2NO + 2CO = N2 + CO2;<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">2NO + 2H2 = N2 + 2H2O<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">2NO2 + 4CO = N2 + 4 CO2<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">2NO2 + 4H2 = N2 + 4H2O<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Conform\u00e9ment \u00e0 cette proc\u00e9dure, il faut donc contr\u00f4ler soigneusement la teneur en O2 au niveau du four.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">La r\u00e9duction catalytique s\u00e9lective peut \u00e9galement contribuer \u00e0 r\u00e9duire les \u00e9missions de NOx ; cette solution consiste \u00e0 ins\u00e9rer des r\u00e9ducteurs s\u00e9lectifs, tels que le nitrure d&#8217;hydrog\u00e8ne ou l&#8217;ur\u00e9e\u00a0:<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">8NH3 + 6NO2 -&gt; 7N2 + 12H2O<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">6NO + 4NH3 \u2192 5N2 + 6H2O<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">4NH3 + 3O2 \u2192 2N2 + 6H2O<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c9dit\u00e9 par ZONEL FILTECH<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polluants atmosph\u00e9riques issus de la production de ciment et solutions associ\u00e9es.<\/p>\n<p>Les principaux polluants atmosph\u00e9riques issus de la production de ciment sont les poussi\u00e8res et les gaz de combustion.<\/p>\n<p>Les poussi\u00e8res proviennent principalement des \u00e9tapes suivantes\u00a0:<\/p>\n<p>1. Pr\u00e9paration des mati\u00e8res premi\u00e8res\u00a0:<\/p>\n<p>A. Broyage du CaCO\u2083.<\/p>\n<p>B. S\u00e9chage de l\u2019argile.<\/p>\n<p>C. Broyage et alimentation du charbon.<\/p>\n<p>D. Broyage des farines crues.<\/p>\n","protected":false},"author":1,"featured_media":9912,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[123],"tags":[],"class_list":["post-9911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-du-secteur"],"_links":{"self":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts\/9911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/comments?post=9911"}],"version-history":[{"count":2,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts\/9911\/revisions"}],"predecessor-version":[{"id":9967,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts\/9911\/revisions\/9967"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/media\/9912"}],"wp:attachment":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/media?parent=9911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/categories?post=9911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/tags?post=9911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}