{"id":1017,"date":"2025-09-17T10:25:31","date_gmt":"2025-09-17T08:25:31","guid":{"rendered":"https:\/\/w-platform.fr\/?p=1017"},"modified":"2025-09-18T09:29:17","modified_gmt":"2025-09-18T07:29:17","slug":"loxy-combustion-quand-bruler-a-loxygene-ouvre-la-voie-au-co2-valorisable","status":"publish","type":"post","link":"https:\/\/w-platform.fr\/en\/2025\/09\/17\/loxy-combustion-quand-bruler-a-loxygene-ouvre-la-voie-au-co2-valorisable\/","title":{"rendered":"Oxy-combustion: when burning with oxygen opens the way to recoverable CO2"},"content":{"rendered":"

A new way to burn <\/strong>
In power plants or cement factories, fuels are usually burned with air. But air is mostly nitrogen (nearly 80 %!). Result: the fumes contain little CO\u2082 (only 10 to 15 %).<\/p>\n\n\n\n

Combustion in the presence of N2 produces nitrogen oxides, which are the source of acid pollution. <\/p>\n\n\n\n

Oxy-combustion changes this pattern: instead of air, quasi-pure oxygen (95-99 %), produced in an air separation unit, is used. To prevent the flame from becoming too hot, part of the fumes already rich in CO\u2082 and water vapor is recycled.<\/p>\n\n\n\n

As summarized by Lockwood<\/strong> and his colleagues in ACS Omega (2023)<\/strong>this principle \"generates a much simpler gas stream to process, dominated by CO\u2082 and water vapor\", notably without NOx.<\/p>\n\n\n\n

The benefits of oxy-fuel combustion<\/strong> <\/p>\n\n\n\n

    \n
  1. An almost nitrogen-free flue gas stream<\/strong> 
    Removing nitrogen from the equation yields gases where CO\u2082 accounts for 70 to 90 % of the volume (after water condensation). <\/li>\n\n\n\n
  2. Simplified capture<\/strong> 
    In conventional combustion, heavy processes are needed to separate the diluted CO\u2082. Here, as Toftegaard et al. in <\/strong>Fuel<\/em><\/strong> (2010)<\/strong>purification is much easier, which reduces the energy costs of capture\". <\/li>\n\n\n\n
  3. Multi-fuel compatibility<\/strong> 
    Oxy-combustion has been tested with coal, natural gas, biomass and even cement. According to aIEA Bioenergy (2022)<\/strong>It is particularly promising in sectors that are difficult to decarbonize, such as cement and steel. <\/li>\n<\/ol>\n\n\n\n

    Opening the way to CO2 recovery  <\/strong> <\/p>\n\n\n\n

    If oxy-combustion is attracting so much interest, it's not just for capturing CO\u2082, but also for the reuse<\/strong>. <\/p>\n\n\n\n

    A concentrated and relatively pure CO\u2082 stream opens the door to numerous pathways for valuation<\/strong> These include methanol production, the manufacture of synthetic fuels, mineral carbonation and even the feeding of microalgae cultures. As underlined by Artz et al. in <\/strong>Chemical Reviews<\/em><\/strong> (2018)<\/strong>CO\u2082 is not just a gas to be eliminated, it's a chemical resource that we need to learn how to exploit\". <\/p>\n\n\n\n

    In other words, oxy-combustion doesn't just make capture simpler: it could become a springboard to a circular carbon economy<\/strong>where yesterday's CO\u2082 becomes tomorrow's raw material. <\/p>\n\n\n\n

    With this in mind, W Platform<\/strong> has contributed to the development of oxy-combustion by proposing an innovative solution that accelerates its industrial integration. <\/p>\n\n\n\n

    Read more<\/a><\/em><\/p>\n\n\n\n

    \"\"<\/figure>","protected":false},"excerpt":{"rendered":"

    A new way to burn In power plants or cement factories, fuels are usually burned with air. But air is mostly nitrogen (nearly 80 %!). As a result, the fumes contain little CO\u2082 (only 10 to 15 %). Nitrogen is used as a heat transfer agent, and is therefore not [...]<\/p>","protected":false},"author":1,"featured_media":948,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-1017","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classe-fr"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/posts\/1017","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/comments?post=1017"}],"version-history":[{"count":2,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/posts\/1017\/revisions"}],"predecessor-version":[{"id":1027,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/posts\/1017\/revisions\/1027"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/media\/948"}],"wp:attachment":[{"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/media?parent=1017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/categories?post=1017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w-platform.fr\/en\/wp-json\/wp\/v2\/tags?post=1017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}