{"id":7244,"date":"2026-06-30T17:38:10","date_gmt":"2026-06-30T09:38:10","guid":{"rendered":"https:\/\/www.chinanhd.com\/?p=7244"},"modified":"2026-06-30T17:38:10","modified_gmt":"2026-06-30T09:38:10","slug":"5-common-filtration-challenges-in-wet-process-phosphoric-acid-plants","status":"publish","type":"post","link":"https:\/\/www.chinanhd.com\/vi\/5-common-filtration-challenges-in-wet-process-phosphoric-acid-plants\/","title":{"rendered":"5 Th\u00e1ch th\u1ee9c th\u01b0\u1eddng g\u1eb7p trong qu\u00e1 tr\u00ecnh l\u1ecdc t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t axit photphoric theo ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt"},"content":{"rendered":"

\"5<\/h1>\n

C\u00e1c nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t axit photphoric theo ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt th\u01b0\u1eddng m\u1ea5t \u1ed5n \u0111\u1ecbnh l\u1ecdc tr\u01b0\u1edbc khi v\u1ea5n \u0111\u1ec1 tr\u1edf th\u00e0nh s\u1ef1 c\u1ed1 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y. Hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f3ng c\u1eb7n th\u1ea1ch cao, r\u1eeda b\u00e1nh l\u1ecdc kh\u00f4ng \u1ed5n \u0111\u1ecbnh, \u0111\u1ed9 \u1ea9m cao h\u01a1n, t\u1eafc ngh\u1ebdn v\u1ea3i l\u1ecdc v\u00e0 di\u1ec7n t\u00edch l\u1ecdc h\u1ea1n ch\u1ebf \u0111\u1ec1u c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t thu h\u1ed3i axit, t\u0103ng t\u1ea7n su\u1ea5t v\u1ec7 sinh v\u00e0 l\u00e0m suy y\u1ebfu s\u1ea3n l\u01b0\u1ee3ng \u1edf c\u00e1c kh\u00e2u ti\u1ebfp theo.<\/p>\n

Qu\u00e1 tr\u00ecnh l\u1ecdc axit photphoric \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n m\u1ed9t quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean m\u1ed9t m\u00e1y m\u00f3c duy nh\u1ea5t. N\u00f3 c\u1ea7n k\u1ebft h\u1ee3p c\u00e1c \u0111i\u1ec1u ki\u1ec7n quy tr\u00ecnh v\u1edbi vi\u1ec7c r\u1eeda b\u00e3 l\u1ecdc, m\u1ee5c ti\u00eau \u0111\u1ed9 \u1ea9m, l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u, m\u1edf r\u1ed9ng c\u00f4ng su\u1ea5t, m\u1ee9c \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt t\u1eeb nh\u00e0 cung c\u1ea5p. \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n h\u00f3a ch\u1ea5t photphat, NHD<\/b><\/u><\/strong><\/a>\u00a0B\u1ed9 l\u1ecdc ch\u00e2n kh\u00f4ng b\u00e0n quay<\/b><\/u><\/strong><\/a>\u00a0C\u00f3 th\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 ph\u01b0\u01a1ng \u00e1n n\u00e0y nh\u01b0 m\u1ed9t l\u1ef1a ch\u1ecdn c\u1ed1t l\u00f5i \u0111\u1ec3 t\u00e1ch ch\u1ea5t r\u1eafn-l\u1ecfng v\u00ec n\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c nhi\u1ec7m v\u1ee5 l\u1ecdc trong nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t axit photphoric v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c d\u1ef1 \u00e1n PA quy m\u00f4 l\u1edbn.<\/p>\n

\u0110i\u1ec1u g\u00ec khi\u1ebfn qu\u00e1 tr\u00ecnh l\u1ecdc axit photphoric b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt tr\u1edf n\u00ean kh\u00f3 kh\u0103n?<\/b><\/strong><\/h2>\n

Qu\u00e1 tr\u00ecnh l\u1ecdc axit photphoric r\u1ea5t kh\u00f3 kh\u0103n v\u00ec b\u1ed9 l\u1ecdc ph\u1ea3i x\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi ch\u1ea5t l\u1ecfng \u0103n m\u00f2n, c\u1eb7n th\u1ea1ch cao, s\u1ef1 thay \u0111\u1ed5i h\u00e0nh vi c\u1ee7a b\u00f9n v\u00e0 \u00e1p su\u1ea5t s\u1ea3n xu\u1ea5t li\u00ean t\u1ee5c. M\u1ed9t nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 g\u1ecdi v\u1ea5n \u0111\u1ec1 n\u00e0y l\u00e0 \"l\u1ecdc k\u00e9m\", nh\u01b0ng nguy\u00ean nh\u00e2n th\u1ef1c s\u1ef1 th\u01b0\u1eddng n\u1eb1m \u1edf vi\u1ec7c \u0111\u00f3ng c\u1eb7n, r\u1eeda, t\u1ea3i tr\u1ecdng v\u1ea3i l\u1ecdc, c\u00f4ng su\u1ea5t ho\u1eb7c s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1eadt li\u1ec7u.<\/p>\n

B\u00f3c t\u00e1ch v\u00e0 t\u1ea1o kh\u1ed1i th\u1ea1ch cao<\/b><\/strong><\/h3>\n

Hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f3ng c\u1eb7n th\u1ea1ch cao th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb v\u1ea5n \u0111\u1ec1 v\u1ec7 sinh, sau \u0111\u00f3 tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 trong s\u1ea3n xu\u1ea5t. S\u1ef1 t\u00edch t\u1ee5 xung quanh c\u00e1c k\u00eanh d\u1eabn d\u00f2ng, khu v\u1ef1c v\u1ea3i l\u1ecdc ho\u1eb7c c\u00e1c ph\u1ea7n x\u1ea3 c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh tho\u00e1t n\u01b0\u1edbc, gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00fat v\u00e0 t\u0103ng t\u1ea7n su\u1ea5t v\u1ec7 sinh. Trong qu\u00e1 tr\u00ecnh l\u1ecdc axit photphoric \u01b0\u1edbt, vi\u1ec7c v\u1ec7 sinh th\u1ee7 c\u00f4ng nhi\u1ec1u h\u01a1n kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p th\u1ef1c s\u1ef1 n\u1ebfu thi\u1ebft k\u1ebf thi\u1ebft b\u1ecb v\u1eabn \u0111\u1ec3 l\u1ea1i nh\u1eefng n\u01a1i m\u00e0 th\u1ea1ch cao c\u00f3 th\u1ec3 l\u1eafng \u0111\u1ecdng v\u00e0 g\u00e2y t\u1eafc ngh\u1ebdn.<\/p>\n

S\u1ef1 b\u1ea5t \u1ed5n c\u1ee7a vi\u1ec7c r\u1eeda b\u00e1nh<\/b><\/strong><\/h3>\n

Vi\u1ec7c r\u1eeda b\u00e1nh l\u1ecdc \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng thu h\u1ed3i axit v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng ph\u1ed1t ph\u00e1t th\u1ea1ch cao. N\u1ebfu n\u01b0\u1edbc r\u1eeda kh\u00f4ng ch\u1ea3y \u0111\u1ec1u qua b\u00e1nh l\u1ecdc, m\u1ed9t ph\u1ea7n b\u00e1nh l\u1ecdc c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u ph\u1ed1t pho h\u00f2a tan h\u01a1n trong khi ph\u1ea7n kh\u00e1c b\u1ecb r\u1eeda qu\u00e1 m\u1ee9c. Thi\u1ebft k\u1ebf b\u1ed9 l\u1ecdc c\u1ea7n ph\u00e2n t\u00e1ch r\u00f5 r\u00e0ng c\u00e1c khu v\u1ef1c l\u1ecdc, r\u1eeda, h\u00fat, x\u1ea3 b\u00e1nh l\u1ecdc v\u00e0 t\u00e1i t\u1ea1o v\u1ea3i l\u1ecdc.<\/p>\n

T\u1ea3i tr\u1ecdng v\u1ea3i l\u1ecdc<\/b><\/strong><\/h3>\n

L\u1ecdc v\u1ea3i<\/b><\/u><\/strong><\/a>\u00a0C\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y l\u00e0m thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 l\u1ecdc, l\u01b0\u1ee3ng b\u00e3 l\u1ecdc c\u00f2n l\u1ea1i v\u00e0 t\u1ea7n su\u1ea5t l\u00e0m s\u1ea1ch. Trong qu\u00e1 tr\u00ecnh l\u1ecdc b\u1eb1ng axit photphoric, v\u1ea3i l\u1ecdc ph\u1ea3i ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c h\u1ea1t th\u1ea1ch cao, axit, qu\u00e1 tr\u00ecnh gi\u1eb7t r\u1eeda l\u1eb7p \u0111i l\u1eb7p l\u1ea1i v\u00e0 chuy\u1ec3n \u0111\u1ed9ng c\u01a1 h\u1ecdc. Khi v\u1ea3i l\u1ecdc ch\u1ecbu t\u1ea3i qu\u00e1 m\u1ee9c, nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i t\u00ecnh tr\u1ea1ng \u0111\u1ed9 \u1ea9m cao h\u01a1n, b\u00e3 l\u1ecdc c\u00f2n s\u00f3t l\u1ea1i ho\u1eb7c qu\u00e1 tr\u00ecnh x\u1ea3 th\u1ea3i kh\u00f4ng \u1ed5n \u0111\u1ecbnh sau m\u1ed7i chu k\u1ef3.<\/p>\n

\"R\u1eeda<\/p>\n

N\u00fat th\u1eaft c\u1ed5 chai v\u1ec1 n\u0103ng l\u1ef1c<\/b><\/strong><\/h3>\n

T\u00ecnh tr\u1ea1ng t\u1eafc ngh\u1ebdn c\u00f4ng su\u1ea5t th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n sau khi m\u1edf r\u1ed9ng s\u1ea3n xu\u1ea5t. C\u00e1c nh\u00e0 v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 r\u00fat ng\u1eafn th\u1eddi gian r\u1eeda ho\u1eb7c tr\u00ec ho\u00e3n vi\u1ec7c l\u00e0m s\u1ea1ch \u0111\u1ec3 duy tr\u00ec s\u1ea3n l\u01b0\u1ee3ng, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m suy y\u1ebfu qu\u00e1 tr\u00ecnh r\u1eeda b\u00e3 v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u1ea9m. \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n l\u1ecdc nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t axit photphoric quy m\u00f4 l\u1edbn, ng\u01b0\u1eddi mua n\u00ean ki\u1ec3m tra xem di\u1ec7n t\u00edch l\u1ecdc hi\u1ec7n c\u00f3 c\u00f3 c\u00f2n \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u r\u1eeda, s\u1ea5y kh\u00f4, x\u1ea3 th\u1ea3i v\u00e0 l\u00e0m s\u1ea1ch v\u1ea3i l\u1ecdc \u1edf m\u1ee5c ti\u00eau s\u1ea3n l\u01b0\u1ee3ng m\u1edbi hay kh\u00f4ng.<\/p>\n

\u0102n m\u00f2n v\u00e0 s\u1ef1 ph\u00f9 h\u1ee3p v\u1eadt li\u1ec7u<\/b><\/strong><\/h3>\n

\u1ee8ng d\u1ee5ng c\u1ee7a axit photphoric kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ea5n \u0111\u1ec1 l\u1ecdc. C\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac c\u00f3 th\u1ec3 ph\u1ea3i ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a axit, s\u1ef1 m\u00e0i m\u00f2n c\u1ee7a th\u1ea1ch cao, n\u01b0\u1edbc r\u1eeda v\u00e0 c\u00e1c quy tr\u00ecnh l\u00e0m s\u1ea1ch. N\u1ed3ng \u0111\u1ed9 axit, ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9, \u0111\u1eb7c t\u00ednh c\u1ee7a ch\u1ea5t r\u1eafn, ph\u01b0\u01a1ng ph\u00e1p l\u00e0m s\u1ea1ch v\u00e0 v\u1eadt li\u1ec7u c\u1ee7a b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac \u0111\u1ec1u c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn v\u1edbi nh\u00e0 cung c\u1ea5p tr\u01b0\u1edbc khi ho\u00e0n t\u1ea5t l\u1ef1a ch\u1ecdn. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn r\u00f2 r\u1ec9, m\u00e0i m\u00f2n c\u1ee5c b\u1ed9 ho\u1eb7c ph\u1ea3i s\u1eeda ch\u1eefa nhi\u1ec1u l\u1ea7n ngay c\u1ea3 khi di\u1ec7n t\u00edch l\u1ecdc \u0111\u1ee7 l\u1edbn.<\/p>\n

Nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/strong><\/h2>\n

Khi v\u1ea5n \u0111\u1ec1 l\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m r\u00f5, vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o t\u00ean trong catalog. Ng\u01b0\u1eddi mua c\u1ea7n ki\u1ec3m tra xem m\u1ed7i thi\u1ebft k\u1ebf x\u1eed l\u00fd di\u1ec7n t\u00edch l\u1ecdc, vi\u1ec7c r\u1eeda b\u00e3 l\u1ecdc, s\u1ea5y kh\u00f4, b\u1ea3o tr\u00ec, ti\u1ebfp x\u00fac v\u1edbi v\u1eadt li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai nh\u01b0 th\u1ebf n\u00e0o. N\u1ebfu nh\u1eefng \u0111i\u1ec3m n\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi d\u00e2y chuy\u1ec1n PA, m\u1ed9t m\u00e1y m\u00f3c l\u1edbn h\u01a1n v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c n\u00fat th\u1eaft c\u1ed5 chai th\u1ef1c s\u1ef1.<\/p>\n

Khu v\u1ef1c l\u1ecdc v\u00e0 khu v\u1ef1c ho\u1ea1t \u0111\u1ed9ng<\/b><\/strong><\/h3>\n

Di\u1ec7n t\u00edch l\u1ecdc c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra d\u1ef1a tr\u00ean c\u00f4ng su\u1ea5t m\u1ee5c ti\u00eau, ch\u1ee9 kh\u00f4ng ch\u1ec9 s\u1ea3n l\u01b0\u1ee3ng hi\u1ec7n t\u1ea1i. N\u1ebfu c\u00f4ng su\u1ea5t t\u0103ng, di\u1ec7n t\u00edch ho\u1ea1t \u0111\u1ed9ng v\u1eabn c\u1ea7n \u0111\u1ee7 th\u1eddi gian cho vi\u1ec7c r\u1eeda, s\u1ea5y kh\u00f4, x\u1ea3 b\u00e3 l\u1ecdc v\u00e0 t\u00e1i t\u1ea1o v\u1ea3i l\u1ecdc. Di\u1ec7n t\u00edch qu\u00e1 nh\u1ecf s\u1ebd khi\u1ebfn m\u1ed7i b\u01b0\u1edbc ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian ng\u1eafn h\u01a1n v\u00e0 l\u00e0m cho vi\u1ec7c duy tr\u00ec qu\u00e1 tr\u00ecnh l\u1ecdc axit photphoric \u1ed5n \u0111\u1ecbnh tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n.<\/p>\n

Khu v\u1ef1c r\u1eeda v\u00e0 s\u1ea5y b\u00e1nh<\/b><\/strong><\/h3>\n

B\u1ed9 l\u1ecdc PA c\u1ea7n c\u00f3 s\u1ef1 ph\u00e2n t\u00e1ch \u0111\u1ee7 gi\u1eefa c\u00e1c khu v\u1ef1c (l\u1ecdc, r\u1eeda, s\u1ea5y, x\u1ea3, l\u00e0m s\u1ea1ch) \u0111\u1ec3 tr\u00e1nh \u0111\u1ed9 \u1ea9m c\u1ee7a b\u00e3 l\u1ecdc kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 qu\u00e1 tr\u00ecnh r\u1eeda kh\u00f4ng ho\u00e0n to\u00e0n. V\u00ec v\u1eady, vi\u1ec7c \u0111\u00e1nh gi\u00e1 c\u1ea7n bao g\u1ed3m c\u1ea3 c\u1ea5u tr\u00fac b\u00e0n quay, ch\u1ee9 kh\u00f4ng ch\u1ec9 t\u1ed5ng di\u1ec7n t\u00edch l\u1ecdc.<\/p>\n

B\u1ea3o tr\u00ec v\u00e0 kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh<\/b><\/strong><\/h3>\n

Vi\u1ec7c b\u1ea3o tr\u00ec v\u00e0 kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh quy\u1ebft \u0111\u1ecbnh li\u1ec7u b\u1ed9 l\u1ecdc c\u00f3 duy tr\u00ec \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t sau nhi\u1ec1u th\u00e1ng s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf hay kh\u00f4ng. Vi\u1ec7c d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn v\u1ea3i l\u1ecdc, c\u00e1c khu v\u1ef1c c\u00f3 th\u1ec3 v\u1ec7 sinh, c\u00e1c \u0111i\u1ec3m hao m\u00f2n d\u1ec5 nh\u00ecn th\u1ea5y, k\u1ebf ho\u1ea1ch d\u1ef1 ph\u00f2ng v\u00e0 vi\u1ec7c ti\u1ebfp c\u1eadn b\u1ec7 \u0111\u1ee1 an to\u00e0n \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng. Nh\u00f3m d\u1ef1 \u00e1n n\u00ean chia s\u1ebb b\u1ea5t k\u1ef3 gi\u1edbi h\u1ea1n kh\u00f4ng gian n\u00e0o cho vi\u1ec7c c\u1ea3i t\u1ea1o tr\u01b0\u1edbc khi ho\u00e0n thi\u1ec7n b\u1ed1 c\u1ee5c cu\u1ed1i c\u00f9ng c\u1ee7a nh\u00e0 m\u00e1y hi\u1ec7n c\u00f3.<\/p>\n

L\u1ef1a ch\u1ecdn linh ki\u1ec7n v\u00e0 v\u1eadt li\u1ec7u<\/b><\/strong><\/h3>\n

C\u00e1c b\u1ed9 ph\u1eadn d\u1eabn d\u00f2ng c\u1ea7n ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a dung d\u1ecbch axit v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. S\u1ef1 m\u00e0i m\u00f2n th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n g\u1ea7n c\u00e1c k\u00eanh, v\u00f2i phun, kh\u00fac u\u1ed1n, khu v\u1ef1c x\u1ea3 v\u00e0 c\u00e1c \u0111i\u1ec3m \u0111\u1ee1 v\u1ea3i. Khi \u0111\u00e1nh gi\u00e1 thi\u1ebft b\u1ecb, ng\u01b0\u1eddi mua c\u1ea7n x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng nh\u1eefng khu v\u1ef1c n\u00e0o c\u1ea7n v\u1eadt li\u1ec7u ch\u1ed1ng \u0103n m\u00f2n ho\u1eb7c ch\u1ed1ng m\u00e0i m\u00f2n. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd, gi\u1ea3m t\u1ea7n su\u1ea5t b\u1ea3o tr\u00ec v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh ho\u1ea1t \u0111\u1ed9ng. V\u00ed d\u1ee5, th\u00e9p kh\u00f4ng g\u1ec9 316L c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi d\u1ecbch v\u1ee5 axit photphoric t\u01b0\u01a1ng \u0111\u1ed1i nh\u1eb9 ho\u1eb7c khu v\u1ef1c n\u01b0\u1edbc r\u1eeda, trong khi \u0111i\u1ec1u ki\u1ec7n dung d\u1ecbch axit \u0103n m\u00f2n h\u01a1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c v\u1eadt li\u1ec7u h\u1ee3p kim cao h\u01a1n nh\u01b0 904L, th\u00e9p song pha 2205. \u0110\u00e2y c\u0169ng l\u00e0 l\u00fac ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t, h\u00e0n, gia c\u00f4ng v\u00e0 ki\u1ec3m tra tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n c\u1ee7a quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb.<\/p>\n

Khi n\u00e0o ng\u01b0\u1eddi mua n\u00ean c\u00e2n nh\u1eafc n\u00e2ng c\u1ea5p b\u1ed9 l\u1ecdc ch\u00e2n kh\u00f4ng cho m\u00e1y h\u00fat b\u1ee5i b\u00e0n xoay?<\/b><\/strong><\/h2>\n

Vi\u1ec7c n\u00e2ng c\u1ea5p b\u1ed9 l\u1ecdc ch\u00e2n kh\u00f4ng b\u00e0n xoay tr\u1edf n\u00ean \u0111\u00e1ng c\u00e2n nh\u1eafc khi c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 l\u00e0m s\u1ea1ch, r\u1eeda, \u0111\u1ed9 \u1ea9m, c\u00f4ng su\u1ea5t ho\u1eb7c v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t b\u1eaft \u0111\u1ea7u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn to\u00e0n b\u1ed9 d\u00e2y chuy\u1ec1n PA. D\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 s\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c ho\u00e0n to\u00e0n. Th\u01b0\u1eddng th\u00ec, nh\u00e0 m\u00e1y m\u1ea5t kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a qu\u1eb7ng, s\u1ea3n l\u01b0\u1ee3ng cao h\u01a1n ho\u1eb7c c\u00e1c m\u1ee5c ti\u00eau r\u1eeda nghi\u00eam ng\u1eb7t h\u01a1n.<\/p>\n

\u0110i\u1ec3m ngh\u1ebdn trong khu v\u1ef1c l\u1ecdc hi\u1ec7n t\u1ea1i<\/b><\/strong><\/h3>\n

N\u1ebfu b\u1ed9 l\u1ecdc hi\u1ec7n t\u1ea1i kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c s\u1ea3n l\u01b0\u1ee3ng m\u1ee5c ti\u00eau m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea3m th\u1eddi gian r\u1eeda ho\u1eb7c s\u1ea5y, vi\u1ec7c s\u1eeda ch\u1eefa \u0111\u01a1n thu\u1ea7n c\u00f3 th\u1ec3 kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1. Nh\u00e0 m\u00e1y c\u1ea7n so s\u00e1nh di\u1ec7n t\u00edch l\u1ecdc hi\u1ec7n t\u1ea1i, s\u1ea3n l\u01b0\u1ee3ng m\u1ee5c ti\u00eau, y\u00eau c\u1ea7u r\u1eeda b\u00e3 l\u1ecdc v\u00e0 \u0111\u1ed9 \u1ea9m m\u1ee5c ti\u00eau tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh xem c\u00f3 c\u1ea7n n\u00e2ng c\u1ea5p hay kh\u00f4ng.<\/p>\n

Thay th\u1ebf \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n<\/b><\/strong><\/h3>\n

Vi\u1ec7c thay th\u1ebf m\u1ed9t thi\u1ebft b\u1ecb l\u1edbn h\u01a1n c\u1ea7n d\u1ef1a tr\u00ean vi\u1ec7c xem x\u00e9t quy tr\u00ecnh v\u00e0 ki\u1ec3m tra t\u1ea1i ch\u1ed7. M\u1ed9t b\u1ed9 l\u1ecdc ch\u00e2n kh\u00f4ng b\u00e0n quay m\u1edbi c\u00f3 th\u1ec3 c\u1ea7n thay \u0111\u1ed5i b\u01a1m, \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1eddng \u1ed1ng, kh\u1edbp b\u1ed9 t\u00e1ch, xem x\u00e9t k\u1ebft c\u1ea5u d\u00e2n d\u1ee5ng v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch l\u1eafp \u0111\u1eb7t. Vi\u1ec7c ch\u1ec9 coi \u0111\u00f3 l\u00e0 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c v\u1ea5n \u0111\u1ec1 s\u1eeda ch\u1eefa m\u1edbi sau khi \u0111\u1eb7t h\u00e0ng.<\/p>\n

C\u1ea3i t\u1ea1o kh\u00f4ng gian v\u00e0 c\u1ea5u tr\u00fac d\u00e2n d\u1ee5ng<\/b><\/strong><\/h3>\n

Nhi\u1ec1u nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t axit photphoric kh\u00f4ng ph\u1ea3i l\u00e0 d\u1ef1 \u00e1n x\u00e2y d\u1ef1ng m\u1edbi ho\u00e0n to\u00e0n. Thi\u1ebft b\u1ecb m\u1edbi ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t sao cho ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c k\u1ebft c\u1ea5u th\u00e9p, b\u1ec7 \u0111\u1ee1, \u0111\u01b0\u1eddng \u1ed1ng, m\u00e1y b\u01a1m v\u00e0 tuy\u1ebfn \u0111\u01b0\u1eddng b\u1ea3o tr\u00ec hi\u1ec7n c\u00f3. B\u1ea3n v\u1ebd m\u1eb7t b\u1eb1ng, k\u00edch th\u01b0\u1edbc thi\u1ebft b\u1ecb hi\u1ec7n t\u1ea1i, gi\u1edbi h\u1ea1n m\u00f3ng, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn c\u1ee7a c\u1ea7n c\u1ea9u v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng kh\u1ea3 d\u1ee5ng c\u1ea7n \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u th\u1ea3o lu\u1eadn v\u1edbi nh\u00e0 cung c\u1ea5p. Vi\u1ec7c ki\u1ec3m tra k\u1ebft c\u1ea5u d\u00e2n d\u1ee5ng c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m vi\u1ec7c ki\u1ec3m tra k\u00edch th\u01b0\u1edbc b\u1ed9 l\u1ecdc.<\/p>\n

Ki\u1ec3m th\u1eed v\u1eadn \u200b\u200bh\u00e0nh li\u00ean t\u1ee5c<\/b><\/strong><\/h3>\n

Th\u1eed nghi\u1ec7m v\u1eadn h\u00e0nh li\u00ean t\u1ee5c cung c\u1ea5p b\u1eb1ng ch\u1ee9ng t\u1ed1t h\u01a1n so v\u1edbi quan s\u00e1t kh\u1edfi \u0111\u1ed9ng ng\u1eafn h\u1ea1n. Ng\u01b0\u1eddi mua n\u00ean x\u00e1c \u0111\u1ecbnh r\u00f5 n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng th\u1ea1ch cao, k\u1ebft qu\u1ea3 r\u1eeda, m\u1ee5c ti\u00eau \u0111\u1ed9 \u1ea9m v\u00e0 th\u1eddi gian v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh tr\u01b0\u1edbc khi nghi\u1ec7m thu. N\u1ebfu kh\u00f4ng \u0111\u00e1p \u1ee9ng c\u00e1c m\u1ee5c ti\u00eau n\u00e0y, b\u1ed9 l\u1ecdc c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng trong khi r\u1ee7i ro c\u1ee7a quy tr\u00ecnh v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft.<\/p>\n

D\u1ef1 \u00e1n PA 300kt \/ m\u1ed9t cho INDORAMA ICS \u1edf Senegal<\/b><\/strong><\/h3>\n

C\u00e1c D\u1ef1 \u00e1n INDORAMA ICS c\u00f4ng su\u1ea5t 300kt\/n\u0103m t\u1ea1i Senegal <\/b><\/u><\/strong><\/a>H\u00ecnh \u1ea3nh minh h\u1ecda c\u00e1ch th\u1ee9c c\u00e1c \u0111i\u1ec3m ngh\u1ebdn v\u1ec1 c\u00f4ng su\u1ea5t v\u00e0 h\u1ea1n ch\u1ebf v\u1ec1 di\u1ec7n t\u00edch l\u1ecdc \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy\u1ebft \u0111\u1ecbnh n\u00e2ng c\u1ea5p c\u1ee5 th\u1ec3. NHD \u0111\u00e3 cung c\u1ea5p m\u1ed9t m\u00e1y l\u1ecdc ch\u00e2n kh\u00f4ng b\u00e0n xoay 100m\u00b2 \u0111\u1ec3 thay th\u1ebf m\u1ed9t thi\u1ebft b\u1ecb hi\u1ec7n c\u00f3 77m\u00b2, gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c kho\u1ea3ng c\u00e1ch v\u1ec1 n\u0103ng su\u1ea5t trong khi v\u1eabn gi\u1eef cho ph\u1ea1m vi c\u1ea3i t\u1ea1o t\u1ea1i ch\u1ed7 \u1edf m\u1ee9c h\u1ee3p l\u00fd. D\u1ef1 \u00e1n bao g\u1ed3m \u0111\u00e1nh gi\u00e1 t\u1ea1i ch\u1ed7, gia c\u1ed1 k\u1ebft c\u1ea5u d\u00e2n d\u1ee5ng, l\u1eadp k\u1ebf ho\u1ea1ch l\u1eafp \u0111\u1eb7t v\u00e0 th\u1eed nghi\u1ec7m v\u1eadn h\u00e0nh li\u00ean t\u1ee5c trong 72 gi\u1edd. Th\u1eed nghi\u1ec7m \u0111\u1ea1t c\u00f4ng su\u1ea5t 562 t\u1ea5n\/ng\u00e0y, cao h\u01a1n m\u1ee9c y\u00eau c\u1ea7u 558 t\u1ea5n\/24h, v\u00e0 h\u00e0m l\u01b0\u1ee3ng ph\u1ed1t pho h\u00f2a tan trong n\u01b0\u1edbc c\u1ee7a th\u1ea1ch cao \u0111\u1ea1t 0,47 so v\u1edbi m\u1ee5c ti\u00eau 0,5.<\/p>\n

\"D\u1ef1<\/p>\n

Ng\u01b0\u1eddi mua n\u00ean \u0111\u00e1nh gi\u00e1 nh\u00e0 cung c\u1ea5p nh\u01b0 th\u1ebf n\u00e0o v\u00e0 x\u00e2y d\u1ef1ng danh s\u00e1ch ki\u1ec3m tra quy tr\u00ecnh mua s\u1eafm ra sao?<\/b><\/strong><\/h2>\n

Vi\u1ec7c \u0111\u00e1nh gi\u00e1 nh\u00e0 cung c\u1ea5p c\u1ea7n k\u1ebft h\u1ee3p kinh nghi\u1ec7m v\u1ec1 quy tr\u00ecnh, b\u1eb1ng ch\u1ee9ng d\u1ef1 \u00e1n, n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t, \u0111\u00e1nh gi\u00e1 v\u1eadt li\u1ec7u v\u00e0 h\u1ed7 tr\u1ee3 d\u1ecbch v\u1ee5. Nh\u00e0 cung c\u1ea5p h\u1ec7 th\u1ed1ng l\u1ecdc PA c\u1ea7n hi\u1ec3u r\u00f5 quy tr\u00ecnh v\u00e0 th\u1ef1c t\u1ebf t\u1ea1i c\u00f4ng tr\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn vi\u1ec7c thay th\u1ebf, l\u1eafp \u0111\u1eb7t, v\u1eadn h\u00e0nh th\u1eed v\u00e0 b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n. H\u01b0\u1edbng d\u1eabn d\u01b0\u1edbi \u0111\u00e2y bi\u1ebfn qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 \u0111\u00f3 th\u00e0nh c\u00e1c \u0111i\u1ec3m ki\u1ec3m tra mua s\u1eafm th\u1ef1c ti\u1ec5n.<\/p>\n

\"H\u01b0\u1edbng<\/p>\n

Danh s\u00e1ch ki\u1ec3m tra cu\u1ed1i c\u00f9ng v\u1ec1 quy tr\u00ecnh mua s\u1eafm \u0111\u1ec3 li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/b><\/strong><\/h3>\n

Tr\u01b0\u1edbc khi g\u1eedi y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ) cho b\u1ed9 l\u1ecdc xoay b\u00e0n s\u1eed d\u1ee5ng axit photphoric, ng\u01b0\u1eddi mua c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c th\u00f4ng tin sau:<\/p>\n