Les tuyaux en PE peuvent-ils résister à l'acide sulfurique?

2025-08-19

Dans le domaine de la production industrielle et du transport de produits chimiques, l'acide sulfurique, en tant que milieu corrosif fort commun, impose des exigences extrêmement élevées en matière de résistance à la corrosion des matériaux de pipeline. Le tuyau en PE (tuyau en polyéthylène) est souvent utilisé dans divers scénarios de transport de fluides en raison de son excellente stabilité chimique et de ses performances en termes de coûts. Cependant, pour savoir si le tuyau en PE peut résister à la corrosion par l'acide sulfurique, il faut une analyse complète de la concentration en acide sulfurique, de la température et des caractéristiques du matériau PE. Le matériau

PE lui-même a une bonne inertie chimique, sa structure moléculaire est stable et il présente une forte résistance à la corrosion à la plupart des solutions acides, alcalines et salines à température ambiante. Mais la corrosivité de l'acide sulfurique est étroitement liée à sa concentration : pour l'acide sulfurique concentré à concentration plus élevée (se réfère généralement à plus de 98 %), dans des conditions de température normales, le tuyau en PE a une certaine résistance à la corrosion, car sa forte propriété oxydante formera un film de passivation sur la surface du PE, ralentissant le processus de corrosion. Cependant, pour l'acide sulfurique dilué ou l'augmentation de la température, la résistance à la corrosion du tuyau en PE sera considérablement réduite et la pénétration des ions hydrogène peut provoquer le vieillissement du matériau, la fissuration et affecter la durée de vie du pipeline.

Dans les applications pratiques, lors du choix d'un tuyau en PE pour transporter l'acide sulfurique, il est nécessaire de clarifier la concentration, la température et les conditions de fonctionnement de l'acide sulfurique. Il est recommandé de se référer au tableau des données de résistance des matériaux professionnels ou de consulter le support technique. En tant que fabricant de tuyaux professionnel, ses tuyaux en PE sont produits en stricte conformité avec les normes nationales. Des paramètres détaillés de résistance à la corrosion chimique seront fournis dans le manuel du produit pour aider les utilisateurs à choisir le type raisonnablement en fonction des conditions de travail spécifiques afin d'assurer le fonctionnement sûr et stable du système.

En résumé, la résistance à la corrosion des tuyaux en PE à l'acide sulfurique n'est pas absolue et doit être évaluée scientifiquement en fonction des conditions de travail réelles. Dans le processus de sélection, des facteurs clés tels que la concentration et la température sont pleinement pris en compte, et le support technique de marques régulières telles que AD Pipe peut être utilisé pour assurer la sécurité et l'efficacité du transport de l'acide sulfurique.


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