{"id":4588,"date":"2026-08-24T09:57:26","date_gmt":"2026-08-24T02:57:26","guid":{"rendered":"https:\/\/aktc.com.vn\/?p=4588"},"modified":"2026-08-24T09:57:26","modified_gmt":"2026-08-24T02:57:26","slug":"cach-phan-tan-hec-dung-cach-trong-son-nuoc-co-che-nguyen-nhan-von-cuc-va-giai-phap","status":"publish","type":"post","link":"https:\/\/aktc.com.vn\/en\/cach-phan-tan-hec-dung-cach-trong-son-nuoc-co-che-nguyen-nhan-von-cuc-va-giai-phap\/","title":{"rendered":"C\u00c1CH PH\u00c2N T\u00c1N HEC \u0110\u00daNG C\u00c1CH TRONG S\u01a0N N\u01af\u1edaC: C\u01a0 CH\u1ebe, NGUY\u00caN NH\u00c2N V\u00d3N C\u1ee4C V\u00c0 GI\u1ea2I PH\u00c1P"},"content":{"rendered":"

Hydroxyethyl Cellulose (HEC)<\/strong> l\u00e0 ch\u1ea5t l\u00e0m \u0111\u1eb7c kh\u00f4ng ion \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong s\u01a1n n\u01b0\u1edbc nh\u1edd kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 nh\u1edbt, ki\u1ec3m so\u00e1t t\u00ednh l\u01b0u bi\u1ebfn v\u00e0 h\u1ed7 tr\u1ee3 \u1ed5n \u0111\u1ecbnh h\u1ec7 s\u01a1n. Tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, HEC c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng v\u00f3n c\u1ee5c, t\u1ea1o \u201cm\u1eaft c\u00e1\u201d (fish-eye), hydrat h\u00f3a kh\u00f4ng ho\u00e0n to\u00e0n ho\u1eb7c \u0111\u1ed9 nh\u1edbt ph\u00e1t tri\u1ec3n kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong>.<\/p>\n

Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y kh\u00f4ng nh\u1ea5t thi\u1ebft xu\u1ea5t ph\u00e1t t\u1eeb ch\u1ea5t l\u01b0\u1ee3ng HEC. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, nguy\u00ean nh\u00e2n li\u00ean quan \u0111\u1ebfn c\u00e1ch ph\u00e2n t\u00e1n, t\u1ed1c \u0111\u1ed9 hydrat h\u00f3a, \u0111i\u1ec1u ki\u1ec7n khu\u1ea5y v\u00e0 t\u01b0\u01a1ng t\u00e1c gi\u1eefa HEC v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c trong c\u00f4ng th\u1ee9c<\/strong>.<\/p>\n

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  1. HEC t\u1ea1o \u0111\u1ed9 nh\u1edbt cho s\u01a1n n\u01b0\u1edbc nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/li>\n<\/ol>\n

    HEC l\u00e0 polymer cellulose bi\u1ebfn t\u00ednh c\u00f3 kh\u1ea3 n\u0103ng h\u00f2a tan v\u00e0 hydrat h\u00f3a trong n\u01b0\u1edbc. Khi ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc, c\u00e1c nh\u00f3m \u01b0a n\u01b0\u1edbc tr\u00ean m\u1ea1ch polymer t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u01b0\u1edbc, khi\u1ebfn c\u00e1c h\u1ea1t HEC d\u1ea7n th\u1ea5m \u01b0\u1edbt, hydrat h\u00f3a v\u00e0 tr\u01b0\u01a1ng n\u1edf<\/strong>.<\/p>\n

    C\u00f3 th\u1ec3 h\u00ecnh dung qu\u00e1 tr\u00ecnh n\u00e0y theo c\u00e1c b\u01b0\u1edbc:<\/p>\n

    Th\u1ea5m \u01b0\u1edbt \u2192 Hydrat h\u00f3a \u2192 Tr\u01b0\u01a1ng n\u1edf \u2192 M\u1edf r\u1ed9ng chu\u1ed7i polymer \u2192 Ph\u00e1t tri\u1ec3n \u0111\u1ed9 nh\u1edbt<\/strong><\/p>\n

    Khi \u0111\u01b0\u1ee3c hydrat h\u00f3a \u0111\u1ea7y \u0111\u1ee7, c\u00e1c chu\u1ed7i polymer ph\u00e2n b\u1ed1 trong pha n\u01b0\u1edbc v\u00e0 l\u00e0m t\u0103ng l\u1ef1c c\u1ea3n \u0111\u1ed1i v\u1edbi s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a h\u1ec7, t\u1eeb \u0111\u00f3 t\u1ea1o hi\u1ec7u \u1ee9ng t\u0103ng \u0111\u1ed9 nh\u1edbt.<\/p>\n

    \u0110i\u1ec3m quan tr\u1ecdng l\u00e0 qu\u00e1 tr\u00ecnh hydrat h\u00f3a kh\u00f4ng x\u1ea3y ra \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 h\u1ea1t HEC. N\u1ebfu l\u1edbp b\u00ean ngo\u00e0i c\u1ee7a h\u1ea1t hydrat h\u00f3a qu\u00e1 nhanh, m\u1ed9t l\u1edbp polymer c\u00f3 \u0111\u1ed9 nh\u1edbt cao c\u00f3 th\u1ec3 h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t v\u00e0 l\u00e0m h\u1ea1n ch\u1ebf s\u1ef1 th\u00e2m nh\u1eadp c\u1ee7a n\u01b0\u1edbc v\u00e0o ph\u1ea7n b\u00ean trong.<\/p>\n

    \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng c\u01a1 ch\u1ebf c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng v\u00f3n c\u1ee5c ho\u1eb7c \u201cm\u1eaft c\u00e1\u201d<\/strong>.<\/p>\n

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    1. V\u00ec sao HEC b\u1ecb v\u00f3n c\u1ee5c ho\u1eb7c t\u1ea1o \u201cm\u1eaft c\u00e1\u201d?<\/strong><\/li>\n<\/ol>\n

      Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi ph\u00e2n t\u00e1n v\u00e0 hydrat h\u00f3a kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1ed1t<\/strong>.<\/p>\n

      M\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p:<\/p>\n

      B\u1ed5 sung HEC qu\u00e1 nhanh<\/strong><\/p>\n

      Khi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn HEC \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed trong th\u1eddi gian ng\u1eafn, c\u00e1c h\u1ea1t polymer c\u00f3 th\u1ec3 ti\u1ebfp x\u00fac v\u1edbi nhau tr\u01b0\u1edbc khi \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n ri\u00eang bi\u1ec7t.<\/p>\n

      B\u1ec1 m\u1eb7t h\u1ea1t nhanh ch\u00f3ng h\u00fat n\u01b0\u1edbc v\u00e0 tr\u01b0\u01a1ng n\u1edf, trong khi ph\u1ea7n b\u00ean trong ch\u01b0a \u0111\u01b0\u1ee3c hydrat h\u00f3a \u0111\u1ea7y \u0111\u1ee7. C\u00e1c h\u1ea1t c\u00f3 th\u1ec3 k\u1ebft d\u00ednh th\u00e0nh nh\u1eefng c\u1ee5m l\u1edbn v\u00e0 r\u1ea5t kh\u00f3 ph\u00e1 v\u1ee1 v\u1ec1 sau.<\/p>\n

      Kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n kh\u00f4ng \u0111\u1ee7<\/strong><\/p>\n

      N\u1ebfu h\u1ec7 khu\u1ea5y kh\u00f4ng t\u1ea1o \u0111\u01b0\u1ee3c s\u1ef1 tu\u1ea7n ho\u00e0n v\u00e0 ph\u00e2n t\u00e1n ph\u00f9 h\u1ee3p, HEC c\u00f3 th\u1ec3 t\u1eadp trung t\u1ea1i m\u1ed9t v\u00f9ng trong b\u1ed3n thay v\u00ec ph\u00e2n b\u1ed1 \u0111\u1ec1u trong pha n\u01b0\u1edbc.<\/p>\n

      Do \u0111\u00f3, kh\u00f4ng n\u00ean ch\u1ec9 quan t\u00e2m \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 quay c\u1ee7a m\u00e1y khu\u1ea5y. Hi\u1ec7u qu\u1ea3 ph\u00e2n t\u00e1n c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i c\u00e1nh khu\u1ea5y, k\u00edch th\u01b0\u1edbc b\u1ed3n, v\u1ecb tr\u00ed c\u00e1nh, th\u1ec3 t\u00edch m\u1ebb v\u00e0 c\u00e1ch b\u1ed5 sung nguy\u00ean li\u1ec7u<\/strong>.<\/p>\n

      Hydrat h\u00f3a x\u1ea3y ra tr\u01b0\u1edbc khi HEC \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n ho\u00e0n to\u00e0n<\/strong><\/p>\n

      \u0110\u00e2y l\u00e0 \u0111i\u1ec3m quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd HEC.<\/p>\n

      M\u1ee5c ti\u00eau kh\u00f4ng \u0111\u01a1n gi\u1ea3n l\u00e0 \u201ccho HEC v\u00e0o n\u01b0\u1edbc\u201d, m\u00e0 l\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 c\u00e1c h\u1ea1t \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n t\u1ed1t tr\u01b0\u1edbc khi ch\u00fang ph\u00e1t tri\u1ec3n \u0111\u1ed9 nh\u1edbt m\u1ea1nh<\/strong>.<\/p>\n

      V\u00ec v\u1eady, c\u00f3 th\u1ec3 xem nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n l\u00e0:<\/p>\n

      Ph\u00e2n t\u00e1n t\u1ed1t tr\u01b0\u1edbc \u2013 hydrat h\u00f3a \u0111\u1ea7y \u0111\u1ee7 sau.<\/strong><\/p>\n

        \n
      1. Quy tr\u00ecnh ph\u00e2n t\u00e1n HEC trong s\u01a1n n\u01b0\u1edbc<\/strong><\/li>\n<\/ol>\n

        Quy tr\u00ecnh c\u1ee5 th\u1ec3 c\u1ea7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh theo t\u1eebng lo\u1ea1i HEC, c\u00f4ng th\u1ee9c s\u01a1n v\u00e0 thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t. Tuy nhi\u00ean, m\u1ed9t quy tr\u00ecnh c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

        \"\"<\/a><\/p>\n

        B\u01b0\u1edbc 1: Chu\u1ea9n b\u1ecb pha n\u01b0\u1edbc<\/strong><\/p>\n

        \u0110\u01b0a l\u01b0\u1ee3ng n\u01b0\u1edbc th\u00edch h\u1ee3p v\u00e0o b\u1ed3n v\u00e0 b\u1eaft \u0111\u1ea7u khu\u1ea5y tr\u01b0\u1edbc khi b\u1ed5 sung HEC.<\/p>\n

        M\u1ee5c ti\u00eau l\u00e0 t\u1ea1o \u0111\u1ee7 chuy\u1ec3n \u0111\u1ed9ng trong pha n\u01b0\u1edbc \u0111\u1ec3 khi HEC \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o, c\u00e1c h\u1ea1t c\u00f3 th\u1ec3 nhanh ch\u00f3ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n thay v\u00ec t\u1eadp trung th\u00e0nh m\u1ed9t v\u00f9ng.<\/p>\n

        B\u01b0\u1edbc 2: B\u1ed5 sung HEC t\u1eeb t\u1eeb v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u<\/strong><\/p>\n

        Kh\u00f4ng n\u00ean \u0111\u1ed5 to\u00e0n b\u1ed9 HEC v\u00e0o c\u00f9ng m\u1ed9t \u0111i\u1ec3m trong th\u1eddi gian r\u1ea5t ng\u1eafn.<\/p>\n

        C\u1ea7n ki\u1ec3m so\u00e1t:<\/p>\n