{"id":2230,"date":"2023-10-19T13:23:24","date_gmt":"2023-10-19T05:23:24","guid":{"rendered":"http:\/\/www3.laiko.net\/all\/regeneration-principle-of-molecular-sieve-in-psa-air-separation-plant\/"},"modified":"2023-10-19T13:27:56","modified_gmt":"2023-10-19T05:27:56","slug":"regeneration-principle-of-molecular-sieve-in-psa-air-separation-plant","status":"publish","type":"post","link":"https:\/\/www.laiko.net\/fr\/principe-de-regeneration-du-tamis-moleculaire-dans-linstallation-de-separation-dair-psa\/","title":{"rendered":"Principe de r\u00e9g\u00e9n\u00e9ration du tamis mol\u00e9culaire dans une installation de s\u00e9paration d'air PSA"},"content":{"rendered":"<div class=\"flexbox smcenter other_page richtext\">\n<div class=\"flex-right\">\n<h1>Principe de r\u00e9g\u00e9n\u00e9ration du tamis mol\u00e9culaire dans une installation de s\u00e9paration d'air PSA<\/h1>\n<p><\/p>\n<div class=\"inner_box\">\n<p>Pour l'installation de s\u00e9paration d'air par tamis mol\u00e9culaire PSA, le tamis mol\u00e9culaire est sans aucun doute l'\u00e9l\u00e9ment central du syst\u00e8me ; seul l'air comprim\u00e9 propre est continuellement adsorb\u00e9 et r\u00e9g\u00e9n\u00e9r\u00e9 par le tamis mol\u00e9culaire, afin de produire en continu l'azote ou l'oxyg\u00e8ne dont nous avons besoin.<\/p>\n<p><\/p>\n<p>La r\u00e9g\u00e9n\u00e9ration peut \u00eatre consid\u00e9r\u00e9e comme le processus inverse de l'adsorption ; en effet, une fois que le tamis mol\u00e9culaire a termin\u00e9 une adsorption satur\u00e9e, il ne peut plus continuer \u00e0 adsorber le gaz et doit \"r\u00e9cup\u00e9rer\" sa capacit\u00e9 d'adsorption, ce que nous appelons la \"r\u00e9g\u00e9n\u00e9ration\".<\/p>\n<p><\/p>\n<p>La r\u00e9g\u00e9n\u00e9ration du tamis mol\u00e9culaire peut aider le tamis mol\u00e9culaire \u00e0 durer le plus longtemps possible et \u00e0 conserver de bonnes performances. Les tamis mol\u00e9culaires correctement r\u00e9g\u00e9n\u00e9r\u00e9s pr\u00e9sentent une tr\u00e8s faible att\u00e9nuation et un vieillissement des propri\u00e9t\u00e9s d'adsorption et des propri\u00e9t\u00e9s m\u00e9caniques. Il existe deux m\u00e9thodes de r\u00e9g\u00e9n\u00e9ration des tamis mol\u00e9culaires.<\/p>\n<p><\/p>\n<h2>1. Modifier la temp\u00e9rature du tamis mol\u00e9culaire PSA<\/h2>\n<p><\/p>\n<p>Il chauffe le tamis mol\u00e9culaire, \u00e9limine les ions m\u00e9talliques et l'eau combin\u00e9e dans le tamis mol\u00e9culaire \u00e0 faible co\u00fbt d'\u00e9lectricit\u00e9 et \u00e0 grand rayon ionique, et le ram\u00e8ne \u00e0 l'\u00e9tat de cavit\u00e9 ; dans la production industrielle, il sera chauff\u00e9 avec du gaz de r\u00e9g\u00e9n\u00e9ration pr\u00e9chauff\u00e9, pour purger le tamis mol\u00e9culaire et \u00e9liminer l'adsorbat d\u00e9sorb\u00e9. D'une mani\u00e8re g\u00e9n\u00e9rale, la temp\u00e9rature de r\u00e9g\u00e9n\u00e9ration du tamis mol\u00e9culaire est recommand\u00e9e entre 200 et 250 degr\u00e9s. Si la temp\u00e9rature est trop \u00e9lev\u00e9e, les pores du tamis mol\u00e9culaire seront bloqu\u00e9s de mani\u00e8re permanente et le tamis mol\u00e9culaire tombera en panne.<\/p>\n<p><\/p>\n<h2>2. Modifier la pression relative du tamis mol\u00e9culaire PSA<\/h2>\n<p><\/p>\n<p>G\u00e9n\u00e9ralement utilis\u00e9 dans le processus d'adsorption en phase gazeuse. La m\u00e9thode de base consiste \u00e0 maintenir la temp\u00e9rature de l'adsorbant constante et \u00e0 \u00e9liminer l'adsorbat en r\u00e9duisant la pression et en effectuant un rin\u00e7age \u00e0 contre-courant avec un gaz inerte.<\/p>\n<p><\/p>\n<p>La r\u00e9g\u00e9n\u00e9ration est g\u00e9n\u00e9ralement effectu\u00e9e en sens inverse de l'adsorption. La majeure partie de l'adsorbat contenu \u00e0 l'entr\u00e9e du lit d'adsorption n'a pas besoin de traverser tout le lit, ce qui r\u00e9duit efficacement le contact entre le tamis mol\u00e9culaire et le gaz chaud et humide, et am\u00e9liore la dur\u00e9e de vie du tamis mol\u00e9culaire PSA. Bien entendu, le gaz de r\u00e9g\u00e9n\u00e9ration doit \u00eatre aussi sec que possible, sinon l'efficacit\u00e9 de l'adsorption en sera affect\u00e9e.<\/p>\n<p><\/p>\n<p>Quant \u00e0 savoir si la r\u00e9g\u00e9n\u00e9ration est qualifi\u00e9e ou non, la fa\u00e7on habituelle de juger est d'examiner l'instrument. Le temps de r\u00e9g\u00e9n\u00e9ration et la courbe de temp\u00e9rature de la m\u00eame tour enregistr\u00e9s par l'instrument restent normaux, et la valeur de fluctuation est stable ; la concentration de gaz (puret\u00e9) du produit \u00e9chantillonn\u00e9 lorsque la m\u00eame tour est remise en adsorption se situe dans la plage qualifi\u00e9e. Si la plage de variation est tr\u00e8s faible, cela signifie que la r\u00e9g\u00e9n\u00e9ration est termin\u00e9e.<\/p>\n<\/p><\/div>\n<div class=\"pro_detail\"><\/div>\n<p><\/p>\n<p class=\"linkh2\">\n<p><\/p>\n<div class=\"more_art_list\"><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"other_page\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Regeneration Principle of Molecular Sieve in PSA Air Separation Plant For the PSA molecular sieve air separation plant, the molecular sieve is undoubtedly the core component of the system; only the clean compressed air is continuously adsorbed and regenerated through the molecular sieve, in order to continuously produce the nitrogen or oxygen we need. Regeneration [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_joinchat":[],"footnotes":""},"categories":[1,54],"tags":[],"class_list":["post-2230","post","type-post","status-publish","format-standard","hentry","category-all","category-blog"],"blocksy_meta":"","featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":"","trp-custom-language-flag":"","woocommerce_thumbnail":"","woocommerce_single":"","woocommerce_gallery_thumbnail":""},"post_excerpt_stackable":"<p>Regeneration Principle of Molecular Sieve in PSA Air Separation Plant For the PSA molecular sieve air separation plant, the molecular sieve is undoubtedly the core component of the system; only the clean compressed air is continuously adsorbed and regenerated through the molecular sieve, in order to continuously produce the nitrogen or oxygen we need. Regeneration can be understood as the reverse process of adsorption; because after the molecular sieve completes a saturated adsorption, it cannot continue to adsorb gas, and it needs to &#8220;recover&#8221; its adsorption capacity, which is what we call &#8220;regeneration&#8221;. Molecular sieve regeneration can help the molecular\u2026<\/p>\n","category_list":"<a href=\"https:\/\/www.laiko.net\/fr\/category\/tous\/\" rel=\"category tag\">All<\/a>, <a href=\"https:\/\/www.laiko.net\/fr\/category\/blog\/\" rel=\"category tag\">Blog<\/a>","author_info":{"name":"adminn","url":"https:\/\/www.laiko.net\/fr\/author\/adminn\/"},"comments_num":"0 commentaire","_links":{"self":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts\/2230","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/comments?post=2230"}],"version-history":[{"count":1,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts\/2230\/revisions"}],"predecessor-version":[{"id":2469,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts\/2230\/revisions\/2469"}],"wp:attachment":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/media?parent=2230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/categories?post=2230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/tags?post=2230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}