<\/span><\/h3>\nNh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, c\u00f3 ba nguy\u00ean li\u1ec7u th\u00f4 \u0111\u1ea7u ngu\u1ed3n ch\u00ednh cho m\u00e0ng PE cu\u1ed9n l\u1edbn \u1edf giai \u0111o\u1ea1n n\u00e0y, \u0111\u00f3 l\u00e0 d\u1ea7u th\u00f4, d\u1ea7u m\u1ecf v\u00e0 ethylene monome. Do \u0111\u00f3, gi\u00e1 c\u1ee7a ba lo\u1ea1i nguy\u00ean li\u1ec7u tr\u00ean \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a gi\u00e1 polyetylen, n\u00f3i chung, t\u00e1c \u0111\u1ed9ng c\u1ee7a gi\u00e1 nguy\u00ean li\u1ec7u \u0111\u1ea7u ngu\u1ed3n \u0111\u1ebfn gi\u00e1 c\u1ee7a PE v\u1ec1 c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: ng\u1eafn h\u1ea1n ho\u1eb7c d\u00e0i h\u1ea1n. <\/span><\/p>\nT\u00e1c \u0111\u1ed9ng ng\u1eafn h\u1ea1n l\u00e0 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a gi\u00e1 d\u1ea7u l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00e2m l\u00fd c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t nh\u1ef1a, d\u1eabn \u0111\u1ebfn vi\u1ec7c b\u00e1n h\u00e0ng \u1edf th\u01b0\u1ee3ng ngu\u1ed3n quy m\u00f4 l\u1edbn ho\u1eb7c mua \u1edf v\u00f9ng h\u1ea1 ngu\u1ed3n quy m\u00f4 l\u1edbn (kh\u00f4ng lo\u1ea1i tr\u1eeb nh\u1eefng ng\u01b0\u1eddi c\u00f3 \u00fd \u0111\u1ecbnh t\u0103ng gi\u00e1), g\u00e2y ra thi\u1ebfu k\u1ef3 h\u1ea1n bi\u1ebfn \u0111\u1ed9ng gi\u00e1 c\u1ea3 th\u1ecb tr\u01b0\u1eddng.<\/span><\/p>\n T\u00e1c \u0111\u1ed9ng l\u00e2u d\u00e0i l\u00e0 s\u1ef1 thay \u0111\u1ed5i gi\u00e1 d\u1ea7u th\u00f4, naphtha v\u00e0 ethylene monomer. T\u00e1c \u0111\u1ed9ng n\u00e0y \u0111\u1ebfn t\u1eeb s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a chi ph\u00ed nguy\u00ean v\u1eadt li\u1ec7u v\u00e0 l\u00e0 m\u1ed9t t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3. Gi\u00e1 d\u1ea7u th\u00f4 m\u00e0 ch\u00fang ta th\u1ea5y hi\u1ec7n nay l\u00e0 gi\u00e1 k\u1ef3 h\u1ea1n, v\u00e0 qu\u00e1 tr\u00ecnh ch\u1ebf bi\u1ebfn v\u00e0 s\u1ea3n xu\u1ea5t polyetylen c\u00f3 chu k\u1ef3 nh\u1ea5t \u0111\u1ecbnh, do \u0111\u00f3 s\u1ef1 l\u00ean xu\u1ed1ng c\u1ee7a gi\u00e1 d\u1ea7u th\u00f4 c\u00f3 th\u1eddi gian \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a gi\u00e1 polyetylen. T\u1eeb quan \u0111i\u1ec3m c\u1ee7a thi\u1ebft b\u1ecb polyethylene t\u00edch h\u1ee3p hi\u1ec7n nay, h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 m\u00e1y \u0111\u1ec1u s\u1eed d\u1ee5ng d\u1ea7u, do \u0111\u00f3, bi\u1ebfn \u0111\u1ed9ng gi\u00e1 d\u1ea7u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 l\u00ean xu\u1ed1ng c\u1ee7a gi\u00e1 polyethylene nhi\u1ec1u h\u01a1n s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a gi\u00e1 d\u1ea7u th\u00f4 v\u00e0 gi\u00e1 ethylene monomer.<\/span><\/p>\n<\/span>Cung v\u00e0 c\u1ea7u c\u1ee7a m\u00e0ng ch\u00edt b\u1ecdc h\u00e0ng<\/strong><\/span><\/span><\/h3>\nT\u00e1c \u0111\u1ed9ng c\u1ee7a cung v\u00e0 c\u1ea7u l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong s\u1ef1 bi\u1ebfn \u0111\u1ed9ng gi\u00e1 c\u1ee7a polyetylen, n\u1ebfu t\u1ed5ng cung PE trong n\u01b0\u1edbc l\u1edbn h\u01a1n t\u1ed5ng c\u1ea7u th\u1ecb tr\u01b0\u1eddng h\u1ea1 ngu\u1ed3n, th\u00ec d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ea1m ph\u00e1t, gi\u00e1 th\u1ecb tr\u01b0\u1eddng PE trong n\u01b0\u1edbc ph\u1ea3i suy y\u1ebfu. Ng\u01b0\u1ee3c l\u1ea1i, t\u1ed5ng cung m\u00e0ng PE cu\u1ed9n l\u1edbn trong n\u01b0\u1edbc nh\u1ecf h\u01a1n t\u1ed5ng c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng h\u1ea1 ngu\u1ed3n. Khi \u0111\u00f3, d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a gi\u1ea3m ph\u00e1t, gi\u00e1 th\u1ecb tr\u01b0\u1eddng PE trong n\u01b0\u1edbc s\u1ebd b\u1ecb suy y\u1ebfu.<\/span><\/p>\n<\/span>Ch\u00ednh s\u00e1ch v\u0129 m\u00f4<\/strong><\/span><\/span><\/h3>\nNh\u1eefng thay \u0111\u1ed5i v\u1ec1 ch\u00ednh s\u00e1ch nh\u1eadp kh\u1ea9u trong n\u01b0\u1edbc ch\u1eafc ch\u1eafn s\u1ebd tr\u1ef1c ti\u1ebfp l\u00e0m thay \u0111\u1ed5i l\u01b0\u1ee3ng PE nh\u1eadp kh\u1ea9u trong n\u01b0\u1edbc, d\u1eabn \u0111\u1ebfn thay \u0111\u1ed5i t\u1ed5ng cung PE trong n\u01b0\u1edbc, t\u1eeb \u0111\u00f3 g\u00e2y ra bi\u1ebfn \u0111\u1ed9ng gi\u00e1 PE.\u00a0<\/span><\/p>\n