{"id":4497,"date":"2025-09-29T09:48:21","date_gmt":"2025-09-29T01:48:21","guid":{"rendered":"http:\/\/puxi2.wangluocloud.com\/?p=4497"},"modified":"2025-10-24T16:49:30","modified_gmt":"2025-10-24T08:49:30","slug":"application-of-psi-tfn-alkali-resistant-membranes-for-alkali-solution-and-hemicellulose-recovery-from-waste-alkali-in-the-chemical-fiber-industry","status":"publish","type":"post","link":"https:\/\/www.psimembrane.com\/de\/case\/application-of-psi-tfn-alkali-resistant-membranes-for-alkali-solution-and-hemicellulose-recovery-from-waste-alkali-in-the-chemical-fiber-industry\/","title":{"rendered":"Einsatz von alkaliresistenten PSI TFN-Membranen f\u00fcr die R\u00fcckgewinnung von Alkalil\u00f6sung und Hemizellulose aus Alkaliabf\u00e4llen in der chemischen Faserindustrie"},"content":{"rendered":"
\n

\u00dcberblick \u00fcber das Projekt<\/strong><\/h4>\n

Location: Tangshan City, Hebei Province
\nWater Source: Waste Alkali
\nKapazit\u00e4t: 5m\u00b3\/h
\nUser: Chemical Fiber Industry
\nPurpose: Recovery of Alkali Solution and Hemicellulose
\nDatum der Inbetriebnahme: Juni 2025<\/p>\n<\/div>\n

\n

Informationen zum Projekt<\/strong><\/h4>\n

In the production of viscose fiber, an alkali solution is used to dissolve hemicellulose from pulp. If the concentration of hemicellulose in the alkali solution becomes too high, it can adversely affect the quality of the viscose fiber products. To maintain the hemicellulose content in the impregnation alkali solution, the common practice is to discharge a portion of the impregnation alkali solution and supplement it with fresh alkali. The discharged impregnation alkali solution is referred to as waste alkali. The main components of waste alkali are sodium hydroxide and hemicellulose. PSI alkali-resistant membranes are employed to purify and recycle the alkali solution and recover hemicellulose.<\/p>\n<\/div>\n

\n

Main Parameters of Membrane<\/strong><\/h4>\n
\n\n\n\n\n\n\n\n
\n

Material Temperature<\/p>\n<\/td>\n

\n

45\uff5e55\u2103 (highest <70\u2103)<\/p>\n<\/td>\n

\n

 Arbeitsdruck<\/p>\n<\/td>\n

\n

1.5\uff5e3.5MPa<\/p>\n<\/td>\n<\/tr>\n

\n

Alkali Concentration<\/p>\n<\/td>\n

\n

220\uff5e225g\/L<\/p>\n<\/td>\n

\n

Hemicellulose Content<\/p>\n<\/td>\n

\n

35g\/L<\/p>\n<\/td>\n<\/tr>\n

\n

Net Alkali Quantity<\/p>\n<\/td>\n

\n

5m3\/h<\/p>\n<\/td>\n

\n

Net Alkali Recovery Rate<\/p>\n<\/td>\n

\n

\uff1e55%<\/p>\n<\/td>\n<\/tr>\n

\n

Hemicellulose Content in Net Alkali<\/p>\n<\/td>\n

\n

5.0g\/L (within two years)<\/p>\n<\/td>\n

\n

Black Liquor Hemicellulose Content<\/p>\n<\/td>\n

\n

80g\/L<\/p>\n<\/td>\n<\/tr>\n

\n

Modell der Membrane<\/p>\n<\/td>\n

\n

Pro-Base series<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Schaukasten<\/strong><\/h4>\n
\"Application<\/figure>","protected":false},"excerpt":{"rendered":"

Project Overview Location: Tangshan City, Hebei Province Water Source: Waste Alkali Capacity: 5m\u00b3\/h User: Chemical Fiber Industry Purpose: Recovery of Alkali Solution and Hemicellulose Commissioning Date: June 2025 Project Information In the production of viscose fiber, an alkali solution is used to dissolve hemicellulose from pulp. If the concentration of hemicellulose in the alkali solution becomes too high, it can […]<\/p>","protected":false},"author":1,"featured_media":4498,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[68],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/posts\/4497"}],"collection":[{"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/comments?post=4497"}],"version-history":[{"count":18,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/posts\/4497\/revisions"}],"predecessor-version":[{"id":5076,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/posts\/4497\/revisions\/5076"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/media\/4498"}],"wp:attachment":[{"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/media?parent=4497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/categories?post=4497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.psimembrane.com\/de\/wp-json\/wp\/v2\/tags?post=4497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}