{"id":8835,"date":"2026-04-30T10:39:58","date_gmt":"2026-04-30T02:39:58","guid":{"rendered":"https:\/\/www.recycle-plant.com\/?post_type=info&p=8835"},"modified":"2026-05-27T18:27:23","modified_gmt":"2026-05-27T10:27:23","slug":"fiber-grade-rpet-flakes","status":"publish","type":"info","link":"https:\/\/www.recycle-plant.com\/vi\/fiber-grade-rpet-flakes.html","title":{"rendered":"\u0110i\u1ec1u G\u00ec X\u00e1c \u0110\u1ecbnh Ch\u1ea5t L\u01b0\u1ee3ng T\u1ea5m V\u1ea3y rPET?"},"content":{"rendered":"

Trong th\u1ecb tr\u01b0\u1eddng h\u00e0ng h\u00f3a nh\u1ef1a t\u00e1i ch\u1ebf, kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c m\u1ea3nh PET \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111\u1ecbnh gi\u00e1 nh\u01b0 nhau. C\u00e1ch x\u1ebfp h\u1ea1ng gi\u00e1 \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh nghi\u00eam ng\u1eb7t b\u1edfi y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng \u1edf ph\u00eda sau. \u1ede m\u1ee9c cao nh\u1ea5t c\u1ee7a t\u00e1i ch\u1ebf c\u01a1 kh\u00ed l\u00e0 s\u1ea3n xu\u1ea5t fiber grade rPET flakes<\/strong>. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y kh\u00f4ng d\u00e0nh cho b\u0103ng d\u1ea3i \u0111\u00f3ng g\u00f3i c\u1ea5p th\u1ea5p hay \u00e9p nh\u1ef1a d\u00e0y; ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho qu\u00e1 tr\u00ecnh h\u00f3a h\u1ecdc k\u00e9o s\u1ee3i Polyester Staple Fiber (PSF) ho\u1eb7c s\u1ee3i li\u00ean t\u1ee5c.<\/p>

Khi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t d\u1ec7t k\u00e9o nh\u1ef1a polymer qua c\u00e1c l\u1ed7 kim spinneret vi m\u00f4 (th\u01b0\u1eddng d\u01b0\u1edbi 0,3 mm \u0111\u01b0\u1eddng k\u00ednh), \u0111\u1ed9 dung sai v\u1ec1 v\u1eadt ch\u1ea5t v\u00e0 h\u00f3a h\u1ecdc h\u1ea7u nh\u01b0 b\u1eb1ng kh\u00f4ng. B\u1ea5t k\u1ef3 sai l\u1ec7ch n\u00e0o trong t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a polymer s\u1ebd d\u1eabn \u0111\u1ebfn \u0111\u1ee9t s\u1ee3i, t\u1eafc ngh\u1ebdn nhanh c\u1ee7a b\u1ed9 l\u1ecdc ch\u1ea3y, v\u00e0 th\u1eddi gian ng\u1eebng s\u1ea3n xu\u1ea5t \u0111\u1eaft \u0111\u1ecf. V\u00ec v\u1eady, ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a m\u1ea3nh rPET c\u1ea5p s\u1ee3i kh\u00f4ng mang t\u00ednh ch\u1ee7 quan; n\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi gi\u1edbi h\u1ea1n \u0111o l\u01b0\u1eddng ch\u1eb7t ch\u1ebd v\u1ec1 c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m c\u1ee5 th\u1ec3.<\/p>

Ba ch\u1ec9 s\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng b\u1ea5t di b\u1ea5t d\u1ecbch<\/h2>

\u0110\u1ec3 \u0111\u01b0\u1ee3c x\u1ebfp lo\u1ea1i l\u00e0 fiber grade rPET flakes<\/strong>, k\u1ebft qu\u1ea3 t\u1eeb m\u1ed9t d\u00e2y chuy\u1ec1n r\u1eeda x\u00e9t nghi\u1ec7m nghi\u00eam ng\u1eb7t t\u1ea1i ph\u00f2ng th\u00ed nghi\u1ec7m t\u1eadp trung v\u00e0o ba \u0111i\u1ec3m l\u1ed7i ch\u00ednh:<\/p>

1. Th\u00e1ch th\u1ee9c nhi\u1ec7t: \u00d4 nhi\u1ec5m PVC (< 50 PPM)<\/strong> Polyvinyl Chloride (PVC) l\u00e0 k\u1ebb th\u00f9 tuy\u1ec7t \u0111\u1ed1i c\u1ee7a qu\u00e1 tr\u00ecnh quay s\u1ee3i polyester. V\u00ec PVC v\u00e0 PET c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng h\u1ed3 s\u01a1 ph\u00e2n h\u1ee7y nhi\u1ec7t kh\u00e1c bi\u1ec7t r\u1ea5t l\u1edbn, b\u1ea5t k\u1ef3 PVC n\u00e0o c\u00f3 m\u1eb7t trong khu\u00f4n extruder s\u1ebd b\u1ecb ch\u00e1y v\u00e0 gi\u1ea3i ph\u00f3ng axit clohydric. Axit n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ch\u1ea5t x\u00fac t\u00e1c, ph\u00e2n h\u1ee7y m\u1ea1nh chu\u1ed7i ph\u00e2n t\u1eed PET, l\u00e0m tan ch\u1ea3y chuy\u1ec3n sang m\u00e0u n\u00e2u v\u00e0 l\u00e0m gi\u1ea3m \u0111\u1ed9 nh\u1edbt n\u1ed9i t\u1ea1i (IV) c\u1ee7a n\u00f3. Vi\u1ec7c ki\u1ec3m so\u00e1t PVC content in PET flakes<\/code> \u0111\u00f2i h\u1ecfi can thi\u1ec7p t\u1eeb upstream. N\u00f3 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c r\u1eeda tr\u00f4i; n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf m\u1ed9t c\u00e1ch v\u1eadt l\u00fd th\u00f4ng qua s\u00e0ng l\u1ecdc th\u1ee7 c\u00f4ng ho\u1eb7c t\u00e1ch quang h\u1ecdc tr\u01b0\u1edbc khi ch\u1ea5t li\u1ec7u v\u00e0o heavy-duty PET crusher<\/a><\/strong>.<\/p>

2. Ch\u1ea5t d\u01b0 h\u00f3a h\u1ecdc: M\u1ee9c pH (< 8)<\/strong> Vi\u1ec7c l\u00e0m s\u1ea1ch n\u1eb7ng \u0111\u00f2i h\u1ecfi qu\u00e1 tr\u00ecnh x\u00e0 ph\u00f2ng h\u00f3a m\u1ea1nh. C\u00e1c d\u00e2y chuy\u1ec1n t\u00e1i ch\u1ebf c\u00f3 c\u00f4ng su\u1ea5t l\u1edbn s\u1eed d\u1ee5ng caustic soda (NaOH) trong m\u1ed9t hot wash PET line<\/strong> <\/a> \u0111\u1ec3 h\u00f2a tan c\u00e1c d\u1ea7u h\u1eefu c\u01a1 v\u00e0 keo d\u00e1n b\u00e1m c\u1ee9ng. Tuy nhi\u00ean, n\u1ebfu dung d\u1ecbch ki\u1ec1m m\u1ea1nh n\u00e0y v\u1eabn c\u00f2n tr\u00ean nh\u1ef1a, n\u00f3 s\u1ebd g\u00e2y th\u1ee7y ph\u00e2n h\u00f3a h\u1ecdc trong qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y \u1edf ph\u1ea7n sau. \u0110\u1ec3 \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ea5p s\u1ee3i, gi\u00e1 tr\u1ecb pH c\u1ee7a m\u1ea3nh rPET cu\u1ed1i c\u00f9ng ph\u1ea3i \u0111\u01b0\u1ee3c trung h\u00f2a xu\u1ed1ng d\u01b0\u1edbi 8. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch ch\u00e0 r\u1eeda m\u1ea1nh b\u00ean trong c\u00e1c m\u00e1y gi\u1eb7t ma s\u00e1t t\u1ed1c \u0111\u1ed9 cao, ti\u1ebfp theo l\u00e0 c\u00e1c b\u1ec3 r\u1eeda ng\u00e2m n\u01b0\u1edbc nhi\u1ec1u giai \u0111o\u1ea1n l\u00e0m lo\u00e3ng v\u00e0 c\u00f4 l\u1eadp d\u00f2ng ch\u1ea5t mang theo.<\/p>

3. R\u00e0o c\u1ea3n v\u1eadt l\u00fd: H\u00e0m l\u01b0\u1ee3ng \u0111\u1ed9 \u1ea9m (< 1%)<\/strong> PET l\u00e0 v\u1eadt li\u1ec7u h\u00fat \u1ea9m, c\u00f3 ngh\u0129a l\u00e0 n\u00f3 h\u1ea5p th\u1ee5 n\u01b0\u1edbc. N\u1ebfu h\u00e0m l\u01b0\u1ee3ng \u0111\u1ed9 \u1ea9m v\u01b0\u1ee3t qu\u00e1 1% (ho\u1eb7c th\u1eadm ch\u00ed 0,5% \u0111\u1ed1i v\u1edbi s\u1ee3i si\u00eau m\u1ecbn), c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc s\u1ebd ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c chu\u1ed7i polymer PET \u1edf nhi\u1ec7t \u0111\u1ed9 extruder (kho\u1ea3ng 280\u00b0C). Th\u1ee7y ph\u00e2n nhi\u1ec7t l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed, khi\u1ebfn s\u1ee3i tr\u1edf n\u00ean gi\u00f2n v\u00e0 \u0111\u1ee9t khi ch\u1ecbu k\u00e9o.<\/p>

C\u1ea5u h\u00ecnh c\u01a1 h\u1ecdc cho ki\u1ec3m so\u00e1t \u0111\u1ed9 \u1ea9m<\/h3>

Vi\u1ec7c \u0111\u01b0a \u0111\u1ed9 \u1ea9m xu\u1ed1ng t\u1eeb qu\u00e1 tr\u00ecnh r\u1eeda ho\u00e0n to\u00e0n ng\u00e2m xu\u1ed1ng d\u01b0\u1edbi 1% \u0111\u00f2i h\u1ecfi c\u01a1 s\u1edf s\u1ea5y chuy\u00ean d\u1ee5ng. Ph\u01a1i t\u1ef1 nhi\u00ean \u1edf m\u00f4i tr\u01b0\u1eddng l\u00e0 kh\u00f4ng th\u1ec3 trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p.<\/p>

D\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh k\u1ef9 thu\u1eadt c\u1ee7a Shuliy Group, giai \u0111o\u1ea1n \u0111\u1ea7u s\u1eed d\u1ee5ng m\u1ed9t centrifugal dryer<\/strong> (ho\u1ea1t \u0111\u1ed9ng v\u1edbi \u0111\u1ed9ng c\u01a1 37kw cho c\u00f4ng su\u1ea5t 3000kg\/h). L\u1ef1c G \u0111\u1eb7c tr\u01b0ng do rotor t\u1ea1o ra lo\u1ea1i b\u1ecf l\u00ean t\u1edbi 98% n\u01b0\u1edbc b\u1ec1 m\u1eb7t. Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tham s\u1ed1 nghi\u00eam ng\u1eb7t y\u00eau c\u1ea7u cho fiber grade rPET flakes<\/strong>, v\u1eadt li\u1ec7u sau \u0111\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n qua m\u1ed9t \u0111\u01b0\u1eddng \u1ed1ng s\u1ea5y nhi\u1ec7t. Th\u1ed5i kh\u00ed n\u00f3ng (th\u01b0\u1eddng qua h\u1ec7 th\u1ed1ng \u1ed1ng d\u00e0i 15\u201320 m\u00e9t) bay h\u01a1i l\u01b0\u1ee3ng \u0111\u1ed9 \u1ea9m vi m\u00f4 c\u00f2n l\u1ea1i b\u1ecb m\u1eafc trong c\u00e1c n\u1ebfp g\u1ea5p c\u1ee7a mi\u1ebfng v\u1ee1:**<\/p>

Cu\u1ed1i c\u00f9ng, s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u c\u1ea5p s\u1ee3i kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ec9 c\u00f3 washing machines<\/a> \u0111\u1ec3 l\u00e0m s\u1ea1ch nh\u1ef1a. N\u00f3 l\u00e0 vi\u1ec7c v\u1eadn h\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng ho\u00e1 h\u1ecdc v\u00e0 c\u01a1 h\u1ecdc \u0111\u1ed3ng b\u1ed9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t c\u00e1c ph\u1ea7n c\u1ee7a PVC, trung h\u00f2a pH v\u00e0 lo\u1ea1i b\u1ecf \u0111\u1ed9 \u1ea9m.<\/p>","protected":false},"excerpt":{"rendered":"

C\u00e1c m\u1ea3nh rPET c\u1ea5p s\u1ee3i \u0111\u00f2i h\u1ecfi ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t \u00f4 nhi\u1ec5m PVC, m\u1ee9c pH v\u00e0 \u0111\u1ed9 \u1ea9m \u0111\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u00e9o s\u1ee3i polyester. B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch t\u1ea1i sao c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y quan tr\u1ecdng, c\u00e1ch ch\u1ea5t \u00f4 nhi\u1ec5m l\u00e0m h\u1ecfng PET trong qu\u00e1 tr\u00ecnh \u00e9p \u0111\u00f9n, v\u00e0 c\u00e1ch c\u00e1c h\u1ec7 th\u1ed1ng washing, rinsing, centrifugal drying v\u00e0 thermal drying ti\u00ean ti\u1ebfn gi\u00fap s\u1ea3n xu\u1ea5t PET t\u00e1i ch\u1ebf ch\u1ea5t l\u01b0\u1ee3ng cao cho s\u1ea3n xu\u1ea5t PSF v\u00e0 s\u1ee3i d\u1ec7t li\u00ean t\u1ee5c.<\/p>","protected":false},"author":1,"featured_media":8836,"parent":0,"template":"","tags":[],"info-type":[3],"class_list":["post-8835","info","type-info","status-publish","has-post-thumbnail","hentry","info-type-knowledge-base"],"taxonomy_info":{"info-type":[{"value":3,"label":"Knowledge Base"}]},"featured_image_src_large":["https:\/\/www.recycle-plant.com\/wp-content\/uploads\/2026\/04\/Fiber-Grade-rPET-Flakes_\u7ed3\u679c.webp",720,540,false],"author_info":{"display_name":"Ella","author_link":"https:\/\/www.recycle-plant.com\/vi\/author\/admin\/"},"comment_info":"","_links":{"self":[{"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/info\/8835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/info"}],"about":[{"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/types\/info"}],"author":[{"embeddable":true,"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/media\/8836"}],"wp:attachment":[{"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/media?parent=8835"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/tags?post=8835"},{"taxonomy":"info-type","embeddable":true,"href":"https:\/\/www.recycle-plant.com\/vi\/wp-json\/wp\/v2\/info-type?post=8835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}