{"id":163582,"date":"2026-08-25T12:09:39","date_gmt":"2026-08-25T10:09:39","guid":{"rendered":"https:\/\/www.immo-invest.ch\/beton-bekommt-einen-ausweg\/"},"modified":"2026-08-25T13:40:33","modified_gmt":"2026-08-25T11:40:33","slug":"beton-bekommt-einen-ausweg","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/beton-bekommt-einen-ausweg\/","title":{"rendered":"Le b\u00e9ton trouve une issue"},"content":{"rendered":"\n\n<p class=\"wp-block-paragraph\">Le 21 ao\u00fbt, Holcim a mis en service une installation exp\u00e9rimentale de captage du CO\u2082 bas\u00e9e sur une membrane dans la cimenterie de H\u00f6ver, pr\u00e8s de Hanovre. Cette technologie a \u00e9t\u00e9 d\u00e9velopp\u00e9e au Centre Helmholtz Hereon. C\u2019est Cool Planet Technologies qui l\u2019a amen\u00e9e au stade de la commercialisation. L\u2019installation devrait permettre de s\u00e9parer jusqu\u2019\u00e0 90 % du CO\u2082 pr\u00e9sent dans le flux de gaz d\u2019\u00e9chappement.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Ce proc\u00e9d\u00e9 intervient \u00e0 un moment crucial. Lors de la combustion des mati\u00e8res premi\u00e8res, de grandes quantit\u00e9s de CO\u2082 sont directement produites \u00e0 partir du calcaire. Ces \u00e9missions inh\u00e9rentes au processus persistent m\u00eame lorsque les \u00e9nergies renouvelables remplacent les combustibles fossiles. Pour l\u2019industrie du ciment, le captage devient donc un levier essentiel sur la voie de la r\u00e9duction des \u00e9missions.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>De l\u2019essai \u00e0 l\u2019infrastructure<br><\/strong>L\u2019installation pilote devrait capter jusqu\u2019\u00e0 10 000 tonnes de CO\u2082 par an. Selon les m\u00e9dias, la cimenterie de H\u00f6ver \u00e9met environ 600 000 tonnes de CO\u2082 par an. L\u2019exploitation actuelle constitue donc un test en milieu industriel, mais n\u2019est pas encore une solution globale. Holcim \u00e9tudie la mise en place, pour le d\u00e9but des ann\u00e9es 2030, d\u2019une installation d\u2019une capacit\u00e9 pouvant atteindre 200 000 tonnes par an.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Cette technologie repose sur des membranes polym\u00e8res sp\u00e9ciales. Celles-ci laissent passer le CO\u2082 plus rapidement que l\u2019azote et l\u2019oxyg\u00e8ne. Le flux plus riche en CO\u2082 est capt\u00e9 et trait\u00e9. Le flux de gaz d\u2019\u00e9chappement restant est r\u00e9inject\u00e9 dans l\u2019usine avec une teneur en CO\u2082 nettement r\u00e9duite. L\u2019installation peut \u00eatre int\u00e9gr\u00e9e en aval du processus de fabrication existant. C\u2019est pr\u00e9cis\u00e9ment cette possibilit\u00e9 de mise \u00e0 niveau qui rend cette approche int\u00e9ressante pour les cimenteries existantes.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le CO\u2082 devient une mati\u00e8re premi\u00e8re<br><\/strong>Le gaz capt\u00e9 doit \u00eatre r\u00e9utilis\u00e9 dans des industries partenaires. Des applications dans les secteurs des produits chimiques, des biocarburants et des mat\u00e9riaux d\u2019emballage sont \u00e0 l\u2019\u00e9tude. Selon la cha\u00eene NDR, un premier transport de CO\u2082 trait\u00e9 vers des partenaires industriels est pr\u00e9vu pour mars 2027.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Cela ouvre la voie \u00e0 de nouvelles cha\u00eenes de valeur. Mais le projet ne sera rentable que si le captage s&rsquo;av\u00e8re efficace sur le plan \u00e9nerg\u00e9tique, s&rsquo;il existe suffisamment de clients et si des solutions de transport et de stockage sont disponibles pour les quantit\u00e9s restantes.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Plus qu\u2019un simple filtre<br><\/strong>Le ciment est responsable d\u2019environ 8 % des \u00e9missions mondiales de CO\u2082. L\u2019installation de H\u00f6ver constitue donc une \u00e9tape importante. Elle ne remplace toutefois pas une strat\u00e9gie rigoureuse en mati\u00e8re de mat\u00e9riaux. La r\u00e9duction de la consommation de clinker, l\u2019utilisation de mat\u00e9riaux de construction recycl\u00e9s, l\u2019allongement des cycles d\u2019utilisation et la r\u00e9utilisation des b\u00e2timents existants restent tout aussi essentiels.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Pour le secteur immobilier, la transition dans l\u2019utilisation du ciment commence bien avant le premier coulage de b\u00e9ton. Elle commence par se demander si une nouvelle construction est n\u00e9cessaire, quel type de construction r\u00e9duit l\u2019utilisation de mat\u00e9riaux et quelles \u00e9missions un mat\u00e9riau de construction g\u00e9n\u00e8re tout au long de son cycle de vie. Le projet pilote de Holcim pr\u00e9sente une nouvelle option technique. Il s\u2019agit d\u00e9sormais d\u2019en faire une norme \u00e9conomiquement viable.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Le ciment est \u00e0 la base des villes, des ponts et des b\u00e2timents. Mais sa fabrication compte parmi les principales sources industrielles de CO\u2082 au monde. Le probl\u00e8me r\u00e9side au c\u0153ur m\u00eame du processus de combustion et ne peut gu\u00e8re \u00eatre r\u00e9solu par le seul recours \u00e0 l&rsquo;\u00e9lectricit\u00e9 verte. Une nouvelle installation pilote de Holcim Allemagne montre d\u00e9sormais une voie possible pour sortir de ce dilemme.<\/p>\n","protected":false},"author":2,"featured_media":163583,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[22699,8747,22696,22357,56027],"tags":[5675,58459,3046,872,3931,1822,47159,2002,61365,7300],"class_list":["post-163582","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-energie","category-entreprise","category-industrie-du-batiment","category-planification-developpement","tag-baustoffe-fr","tag-co2-abscheidung","tag-holcim-fr","tag-immoinvest-fr","tag-immonews-fr","tag-klimaschutz-fr","tag-klinker-fr","tag-news-fr","tag-pilotanlage","tag-zement-fr"],"acf":{"bild_mit_ki_erstellt_worden":["Ja"],"lead":"Le ciment est \u00e0 la base des villes, des ponts et des b\u00e2timents. Mais sa fabrication compte parmi les principales sources industrielles de CO\u2082 au monde. Le probl\u00e8me r\u00e9side au c\u0153ur m\u00eame du processus de combustion et ne peut gu\u00e8re \u00eatre r\u00e9solu par le seul recours \u00e0 l'\u00e9lectricit\u00e9 verte. Une nouvelle installation pilote de Holcim Allemagne montre d\u00e9sormais une voie possible pour sortir de ce dilemme.","autor":"","ort":"","bildunterschrift":"","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":"3803"},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Le ciment est \u00e0 la base des villes, des ponts et des b\u00e2timents. Mais sa fabrication compte parmi les principales sources industrielles de CO\u2082 au monde. Le probl\u00e8me r\u00e9side au c\u0153ur m\u00eame du processus de combustion et ne peut gu\u00e8re \u00eatre r\u00e9solu par le seul recours \u00e0 l&#039;\u00e9lectricit\u00e9 verte. 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