{"id":6488,"date":"2025-12-25T11:50:51","date_gmt":"2025-12-25T03:50:51","guid":{"rendered":"https:\/\/www.chinanhd.com\/?p=6488"},"modified":"2025-12-26T17:47:03","modified_gmt":"2025-12-26T09:47:03","slug":"prevent-re-entrainment-in-fgd-systems-chevron-vane-demister-design-explained","status":"publish","type":"post","link":"https:\/\/www.chinanhd.com\/vi\/prevent-re-entrainment-in-fgd-systems-chevron-vane-demister-design-explained\/","title":{"rendered":"Ng\u0103n ch\u1eb7n t\u00e1i t\u1eadp luy\u1ec7n trong h\u1ec7 th\u1ed1ng FGD: Thi\u1ebft k\u1ebf Chevron Vane Demister \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch"},"content":{"rendered":"

\"\"V\u00e0o m\u1ed9t bu\u1ed5i s\u00e1ng s\u01b0\u01a1ng m\u00f9, kh\u00f4ng kh\u00ed d\u00e0y v\u1edbi \u0111\u1ed9 \u1ea9m, t\u1ea7m nh\u00ecn m\u1edd v\u00e0 l\u00e0m gi\u00e1n \u0111o\u1ea1n m\u1ecdi ng\u01b0\u1eddi ’ cu\u1ed9c s\u1ed1ng v\u00e0 du l\u1ecbch. C\u00f9ng lo\u1ea1i s\u01b0\u01a1ng m\u00f9 n\u00e0y xu\u1ea5t hi\u1ec7n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, nh\u01b0ng v\u1edbi c\u00e1c c\u1ed5 ph\u1ea7n l\u1edbn h\u01a1n nhi\u1ec1u. Trong c\u00e1c quy tr\u00ecnh nh\u01b0 kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i (FGD), n\u01a1i kh\u00ed tr\u1ed9n v\u1edbi ch\u1ea5t l\u1ecfng trong m\u00e1y t\u1ea9y ho\u1eb7c th\u00e1p h\u1ea5p th\u1ee5, c\u00e1c gi\u1ecdt nh\u1ecf c\u00f3 th\u1ec3 tho\u00e1t kh\u1ecfi v\u00e0 g\u00e2y h\u01b0 h\u1ea1i. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1eadp luy\u1ec7n l\u1ea1i, m\u1ed9t v\u1ea5n \u0111\u1ec1 \u1ea9n n\u00e1t trong \u0111\u00f3 c\u00e1c ch\u1ea5t l\u1ecfng b\u1ecb b\u1eaft \u0111\u01b0\u1ee3c k\u00e9o tr\u1edf l\u1ea1i d\u00f2ng kh\u00ed b\u1eb1ng kh\u00f4ng kh\u00ed di chuy\u1ec3n nhanh ch\u00f3ng. N\u00f3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3, t\u0103ng chi ph\u00ed v\u00e0 c\u00f3 nguy c\u01a1 h\u1ecfng thi\u1ebft b\u1ecb. L\u00e0 m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t demister v\u1edbi nhi\u1ec1u n\u0103m trong l\u0129nh v\u1ef1c, NHD gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y v\u1edbi demister c\u00e1nh chevron c\u1ee7a ch\u00fang t\u00f4i. M\u1ea3nh n\u00e0y ph\u00e1 v\u1ee1 v\u1ea5n \u0111\u1ec1 v\u00e0 cho th\u1ea5y c\u00e1ch th\u1ee9c lo\u1ea1i chevron c\u1ee7a ch\u00fang t\u00f4i n\u1ed5i b\u1eadt trong vi\u1ec7c t\u00e1ch kh\u00ed l\u1ecfng. N\u1ebfu b\u1ea1n’ re \u0111\u1ed1i ph\u00f3 v\u1edbi thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh ho\u1eb7c thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i, d\u00ednh xung quanh \u0111\u1ec3 xem l\u00e0m th\u1ebf n\u00e0o m\u1ed9t demister chevron th\u00f4ng minh c\u00f3 th\u1ec3 l\u00e0m s\u1ea1ch kh\u00f4ng kh\u00ed - theo ngh\u0129a \u0111en.<\/p>\n

M\u1ed1i \u0111e d\u1ecda \u1ea9n c\u1ee7a Re-entrainment<\/strong><\/h2>\n

Vi\u1ec7c t\u1eadp luy\u1ec7n l\u1ea1i c\u00f3 th\u1ec3 kh\u00f4ng thu h\u00fat ti\u00eau \u0111\u1ec1 trong ho\u1ea1t \u0111\u1ed9ng nh\u00e0 m\u00e1y, nh\u01b0ng n\u00f3 l\u1eb7ng l\u1ebd c\u1ea1n ngu\u1ed3n l\u1ef1c v\u00e0 c\u1ea3n tr\u1edf s\u1ea3n l\u01b0\u1ee3ng. Nhi\u1ec1u nh\u00e0 \u0111i\u1ec1u h\u00e0nh b\u1ecf qua n\u00f3 cho \u0111\u1ebfn khi c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u1ecf nh\u01b0 b\u00f3ng tuy\u1ebft tr\u1edf th\u00e0nh th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng l\u1edbn. Hi\u1ec3u m\u1ed1i \u0111e d\u1ecda n\u00e0y b\u1eaft \u0111\u1ea7u v\u1edbi vi\u1ec7c n\u1eafm b\u1eaft c\u01a1 ch\u1ebf c\u1ed1t l\u00f5i c\u1ee7a n\u00f3 v\u00e0 ph\u00e1t hi\u1ec7n n\u01a1i n\u00f3 t\u1ea5n c\u00f4ng kh\u00f3 nh\u1ea5t trong c\u00e1c h\u1ec7 th\u1ed1ng h\u00e0ng ng\u00e0y. Do \u0111\u00f3, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh r\u00f5 nh\u1eefng nghi ph\u1ea1m th\u00f4ng th\u01b0\u1eddng \u0111\u1eb1ng sau n\u00f3, gi\u00fap c\u00e1c nh\u00f3m x\u00e2y d\u1ef1ng ph\u00f2ng th\u1ee7 t\u1ed1t h\u01a1n trong qu\u00e1 tr\u00ecnh t\u00e1ch kh\u00ed l\u1ecfng c\u1ee7a h\u1ecd.<\/p>\n

Re-entrainment l\u00e0 g\u00ec?<\/strong><\/h3>\n

L\u01b0u t\u1eadp l\u1ea1i x\u1ea3y ra khi c\u00e1c gi\u1ecdt ch\u1ea5t l\u1ecfng, \u0111\u00e3 t\u00e1ch kh\u1ecfi m\u1ed9t d\u00f2ng kh\u00ed, b\u1ecb k\u00e9o tr\u1edf l\u1ea1i b\u1edfi c\u00e1c d\u00f2ng ch\u1ea3y bi\u1ebfn \u0111\u1ed9ng. Trong m\u1ed9t thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i, kh\u00ed ch\u1ea3y nhanh qua m\u1ed9t k\u00eanh cong, bu\u1ed9c c\u00e1c gi\u1ecdt v\u00e0o t\u01b0\u1eddng v\u00e0 t\u00edch l\u0169y. Nh\u01b0ng n\u1ebfu t\u1ed1c \u0111\u1ed9 t\u0103ng cao ho\u1eb7c thi\u1ebft k\u1ebf dao \u0111\u1ed9ng, nh\u1eefng gi\u1ecdt \u0111\u00f3 s\u1ebd b\u1ecb ph\u00e1 v\u1ee1 m\u1ed9t l\u1ea7n n\u1eefa. Chu k\u1ef3 n\u00e0y l\u00e3ng ph\u00ed n\u0103ng l\u01b0\u1ee3ng v\u00e0 g\u00e2y \u00f4 nhi\u1ec5m kh\u00ed s\u1ea1ch. Trong thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh, n\u00f3 th\u01b0\u1eddng xu\u1ea5t ph\u00e1t t\u1eeb c\u00e1c m\u00f4 h\u00ecnh d\u00f2ng ch\u1ea3y kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u. C\u00e1c gi\u1ecdt nh\u1ecf nh\u01b0 10 micron c\u00f3 th\u1ec3 tr\u1edf l\u1ea1i, tr\u1ed9n tr\u1edf l\u1ea1i v\u1edbi d\u00f2ng ch\u1ea3y v\u00e0 l\u00e0m gi\u1ea3m m\u1ee9c \u0111\u1ed9 tinh khi\u1ebft. C\u00e1c k\u1ef9 s\u01b0 th\u1ea5y \u0111i\u1ec1u n\u00e0y trong c\u00e1c khu v\u1ef1c \u00e1p su\u1ea5t cao n\u01a1i inertia m\u1ed9t m\u00ecnh c\u00f3 th\u1ec3’ T gi\u1eef ch\u00fang. M\u1ed9t demister ki\u1ec3u chevron r\u1eafn ch\u1ed1ng l\u1ea1i \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch h\u01b0\u1edbng d\u1eabn d\u00f2ng ch\u1ea3y nh\u1eb9 nh\u00e0ng h\u01a1n, nh\u01b0ng kh\u00f4ng c\u00f3 n\u00f3, vi\u1ec7c t\u1eadp luy\u1ec7n l\u1ea1i bi\u1ebfn m\u1ed9t ho\u1ea1t \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0 th\u00e0nh m\u1ed9t v\u00f2ng l\u1ed9n x\u1ed9n.<\/p>\n

T\u00e1i luy\u1ec7n kh\u00f4ng’ t ch\u1ec9 l\u00e0m phi\u1ec1n - n\u00f3 l\u00e0m gi\u00e1n \u0111o\u1ea1n s\u1ef1 c\u00e2n b\u1eb1ng trong c\u00e1c h\u1ec7 th\u1ed1ng quan tr\u1ecdng. H\u00e3y’ Nh\u00ecn k\u1ef9 h\u01a1n v\u00e0o c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, n\u01a1i t\u00e1c \u0111\u1ed9ng h\u1ea1i n\u1eb7ng nh\u1ea5t \u0111\u1ebfn n\u0103ng su\u1ea5t v\u00e0 an to\u00e0n.<\/p>\n

\"\"<\/p>\n

T\u1ea1i sao n\u00f3 l\u00e0m t\u1ed5n th\u01b0\u01a1ng qu\u00e1 tr\u00ecnh c\u1ee7a b\u1ea1n<\/strong><\/h3>\n

Trong c\u00e1c h\u1ec7 th\u1ed1ng kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i (FGD), vi\u1ec7c k\u00e9o l\u1ea1i cho ph\u00e9p c\u00e1c gi\u1ecdt ch\u1ee9a l\u01b0u hu\u1ef3nh tho\u00e1t ra, l\u00e0m \u00f4 nhi\u1ec5m thi\u1ebft b\u1ecb h\u1ea1 l\u01b0u v\u00e0 ph\u00e1t th\u1ea3i t\u0103ng cao. Nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi ph\u1ea1t ho\u1eb7c \u0111\u00f3ng c\u1eeda n\u1ebfu m\u1ee9c v\u01b0\u1ee3t qu\u00e1 quy \u0111\u1ecbnh. Ch\u1ea5t t\u1ea9y c\u0169ng b\u1ecb \u1ea3nh h\u01b0\u1edfng: ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c l\u00f4i l\u1ea1i l\u00e0m x\u00f3i m\u00f2n n\u1ed9i b\u1ed9, c\u1eaft gi\u1ea3m tu\u1ed5i th\u1ecd t\u1eeb nhi\u1ec1u n\u0103m \u0111\u1ebfn nhi\u1ec1u th\u00e1ng. M\u1ed9t tr\u01b0\u1eddng h\u1ee3p trong m\u1ed9t nh\u00e0 m\u00e1y \u0111\u1ed1t than cho th\u1ea5y hi\u1ec7u qu\u1ea3 gi\u1ea3m 15% do \u0111i\u1ec1u n\u00e0y, d\u1eabn \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng nhi\u00ean li\u1ec7u cao h\u01a1n. Th\u00e1p s\u1ea5y l\u00e0’ t mi\u1ec5n d\u1ecbch c\u0169ng v\u1eady. \u1ede \u0111\u00e2y, kh\u00f4ng kh\u00ed \u1ea9m l\u1ea5y l\u1ea1i n\u01b0\u1edbc, tr\u00ec ho\u00e3n s\u1ea5y kh\u00f4 s\u1ea3n ph\u1ea9m v\u00e0 g\u00e2y nguy c\u01a1 n\u1ea5m m\u1ed1c trong ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m. Tr\u00ean c\u00e1c thi\u1ebft b\u1ecb n\u00e0y, vi\u1ec7c t\u1eadp luy\u1ec7n l\u1ea1i l\u00e0m t\u0103ng chi ph\u00ed ho\u1ea1t \u0111\u1ed9ng 20-30% th\u00f4ng qua vi\u1ec7c l\u00e0m s\u1ea1ch v\u00e0 s\u1eeda ch\u1eefa b\u1ed5 sung.<\/p>\n

Ph\u00e1t hi\u1ec7n nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 s\u1eeda ch\u1eefa re-entrainment. C\u00e1c y\u1ebfu t\u1ed1 ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn l\u1ed7i thi\u1ebft k\u1ebf ho\u1eb7c b\u1ecf qua ho\u1ea1t \u0111\u1ed9ng, th\u01b0\u1eddng \u1ea9n trong t\u1ea7m nh\u00ecn r\u00f5 r\u00e0ng cho \u0111\u1ebfn khi ch\u00fang g\u00e2y ra r\u1eafc r\u1ed1i th\u1ef1c s\u1ef1.<\/p>\n

Nh\u1eefng t\u1ed9i ph\u1ea1m ph\u1ed5 bi\u1ebfn l\u00e0 g\u00ec?<\/strong><\/h3>\n

T\u1ed1c \u0111\u1ed9 kh\u00ed cao \u0111\u1ee9ng \u0111\u1ea7u danh s\u00e1ch - t\u1ed1c \u0111\u1ed9 kh\u00ed qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u1ecdt tr\u1edf l\u1ea1i ch\u01a1i. Kho\u1ea3ng c\u00e1ch c\u00e1nh tay k\u00e9m trong m\u1ed9t demister chevron cho ph\u00e9p s\u1ef1 bi\u1ebfn \u0111\u1ed9ng x\u00e2y d\u1ef1ng, trong khi s\u1ef1 t\u1eafc ngh\u1ebdn t\u1eeb ch\u1ea5t r\u1eafn khu\u1ebfch \u0111\u1ea1i v\u1ea5n \u0111\u1ec1. Trong thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh, t\u1ea3i ch\u1ea5t l\u1ecfng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u t\u1eeb phun t\u1ea1o ra c\u00e1c \u0111i\u1ec3m n\u00f3ng \u0111\u1ec3 t\u1eadp trung l\u1ea1i. H\u01a1n n\u1eefa, c\u00e1nh ti\u00eau chu\u1ea9n th\u01b0\u1eddng b\u1ecb m\u1ec7t m\u1ecfi v\u1eadt li\u1ec7u. B\u1ec1 m\u1eb7t b\u1ecb \u0103n m\u00f2n ho\u1eb7c th\u00f4 l\u00e0m gi\u00e1n \u0111o\u1ea1n phim ch\u1ea5t l\u1ecfng, d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1eadp trung l\u1ea1i - m\u1ed9t v\u1ea5n \u0111\u1ec1 m\u00e0 NHD gi\u1ea3i quy\u1ebft b\u1eb1ng k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c trong m\u00e1y gi\u1ea3i ph\u00f3ng lo\u1ea1i chevron c\u1ee7a ch\u00fang t\u00f4i, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u00e1ch ch\u1ea5t l\u1ecfng kh\u00ed m\u1ea1nh m\u1ebd.<\/p>\n

C\u00e1ch thi\u1ebft k\u1ebf ti\u00ean ti\u1ebfn ng\u0103n ch\u1eb7n t\u00e1i t\u1eadp luy\u1ec7n<\/strong><\/h2>\n

Nguy\u00ean t\u1eafc c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb ti\u00eau di\u1ec7t c\u00e1nh chevron l\u00e0 kh\u00ed ch\u1ea3y theo m\u1ed9t m\u00f4 h\u00ecnh zigzag trong c\u00e1nh, v\u00e0 c\u00e1c gi\u1ecdt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn b\u1ec1 m\u1eb7t do inertia v\u00e0 h\u1ea5p d\u1eabn. NHD’ M\u00f4 h\u00ecnh c\u1ee7a S t\u0103ng c\u01b0\u1eddng \u0111i\u1ec1u n\u00e0y v\u1edbi m\u1ed9t s\u1ef1 pha tr\u1ed9n c\u1ee7a c\u00e1c m\u1ee9c \u1ed1ng v\u00e0 s\u00f3ng, c\u1eaft gi\u1ea3m \u00e1p su\u1ea5t trong khi nixing \u0111i\u1ec3m ch\u1ebft. Thi\u1ebft k\u1ebf n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00e1ch kh\u00ed l\u1ecfng k\u1ef9 l\u01b0\u1ee1ng m\u00e0 kh\u00f4ng c\u00f3 b\u1eaby th\u00f4ng th\u01b0\u1eddng. B\u00e2y gi\u1edd, h\u00e3y’ Kh\u00e1m ph\u00e1 c\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf l\u00e0m cho \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3, t\u1eeb h\u00ecnh d\u1ea1ng c\u00e1nh \u0111\u1ec3 d\u1ec5 d\u00e0ng d\u00f2ng ch\u1ea3y \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng k\u00e9o ch\u1ea5t l\u1ecfng nhanh ch\u00f3ng.<\/p>\n

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H\u00ecnh h\u1ecdc Vane t\u1ed1i \u01b0u h\u00f3a cho d\u00f2ng ch\u1ea3y m\u1ecbn h\u01a1n<\/strong><\/h3>\n

C\u00e1c c\u00e1nh l\u01b0\u1ee1i h\u1ee3p l\u00fd trong m\u1ed9t lo\u1ea1i chevron demister h\u01b0\u1edbng d\u1eabn kh\u00ed m\u00e0 kh\u00f4ng c\u00f3 xoay quanh s\u1eafc n\u00e9t g\u00e2y r\u1eafc r\u1ed1i. NHD s\u1eed d\u1ee5ng l\u01b0\u1ee1i l\u01b0\u1ee1i h\u1ee3p l\u00fd. Thi\u1ebft k\u1ebf kh\u00ed \u0111\u1ed9ng h\u1ecdc n\u00e0y \u0111\u00e1ng k\u1ec3 gi\u1ea3m m\u1ea5t \u00e1p su\u1ea5t<\/b><\/strong>\u00a0so v\u1edbi c\u00e1c v\u1ecf truy\u1ec1n th\u1ed1ng. Kh\u00ed ch\u1ea3y \u1edf t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, gi\u1ea3m thi\u1ec3u c\u00e1c xo\u00e1y xo\u00e1y g\u00e2y ra s\u1ef1 t\u1eadp trung l\u1ea1i. Trong thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u00e1c gi\u1ecdt b\u00e1m v\u00e0o l\u01b0\u1ee1i l\u00e2u h\u01a1n, t\u00e1ch r\u1eddi s\u1ea1ch s\u1ebd. H\u00ecnh h\u1ecdc c\u0169ng lan r\u1ed9ng t\u1ea3i c\u00e2n b\u1eb1ng, ng\u0103n ch\u1eb7n qu\u00e1 t\u1ea3i \u1edf c\u00e1c \u0111i\u1ec3m.<\/p>\n

V\u1edbi d\u00f2ng ch\u1ea3y tr\u01a1n tru t\u1ea1i ch\u1ed7, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 x\u1eed l\u00fd ch\u1ea5t l\u1ecfng thu th\u1eadp. Vi\u1ec7c tho\u00e1t n\u01b0\u1edbc hi\u1ec7u qu\u1ea3 gi\u1eef cho b\u1ec1 m\u1eb7t r\u00f5 r\u00e0ng, ng\u0103n ch\u1eb7n s\u1ef1 t\u00edch t\u1ee5 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1eadp trung l\u1ea1i trong m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi.<\/p>\n

H\u1ec7 th\u1ed1ng tho\u00e1t n\u01b0\u1edbc t\u00edch h\u1ee3p \u0111\u1ec3 lo\u1ea1i b\u1ecf Swift<\/strong><\/h3>\n

NHD’ s chevron demister c\u00f3 m\u1ee9c \u1ed1ng t\u1ef1 l\u00e0m s\u1ea1ch k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ph\u1ea7n s\u00f3ng, t\u1ea5t c\u1ea3 \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi h\u1ec7 th\u1ed1ng r\u1eeda tr\u00ean v\u00e0 d\u01b0\u1edbi. Ch\u1ea5t l\u1ecfng tho\u00e1t th\u1eb3ng v\u00e0o b\u1ec3 d\u01b0\u1edbi tr\u1ecdng l\u1ef1c, kh\u00f4ng c\u00f3 g\u00f3c \u1ea9n \u0111\u1ec3 t\u00edch t\u1ee5. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o tho\u00e1t n\u01b0\u1edbc li\u00ean t\u1ee5c v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 t\u00edch t\u1ee5 r\u1eafn th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn t\u1eafc ngh\u1ebdn. V\u00e0 h\u1ec7 th\u1ed1ng c\u0169ng r\u1eeda c\u00e1c ch\u1ea5t r\u1eafn, gi\u1eef c\u00e1c con \u0111\u01b0\u1eddng m\u1edf. Lo\u1ea1i b\u1ecf nhanh c\u00f3 ngh\u0129a l\u00e0 \u00edt c\u01a1 h\u1ed9i cho c\u00e1c gi\u1ecdt nh\u1ea3y tr\u1edf l\u1ea1i, l\u00e0m cho lo\u1ea1i chevron demister m\u1ed9t l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady.<\/p>\n

X\u00e2y d\u1ef1ng m\u1ea1nh m\u1ebd cho hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh<\/strong><\/h3>\n

\u0110\u1eb7c bi\u1ec7t trong s\u1ed1 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t, t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn NHD l\u00e0 l\u1ea1nh h\u00ecnh th\u00e0nh b\u1edfi m\u1ed9t l\u1ea7n nh\u1ea5n<\/b><\/strong>\u00a0Kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 \u0111i\u1ec1u tr\u1ecb nhi\u1ec7t. Qu\u00e1 tr\u00ecnh n\u00e0y b\u1ea3o t\u1ed3n v\u1eadt li\u1ec7u’ S \u0111\u1eb7c t\u00ednh h\u00f3a h\u1ecdc v\u00e0 v\u1eadt l\u00fd ban \u0111\u1ea7u<\/b><\/strong>\u00a0v\u00e0 \u0111\u1ea3m b\u1ea3o C\u1ea5u tr\u00fac kim lo\u1ea1i v\u1eabn kh\u00f4ng thay \u0111\u1ed5i<\/b><\/strong>K\u1ebft qu\u1ea3 l\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac v\u01b0\u1ee3t tr\u1ed9i v\u00e0 ch\u1ed1ng \u0103n m\u00f2n, \u0111\u1ea3m b\u1ea3o demister v\u1eabn b\u1ec1n l\u00e2u d\u00e0i.<\/p>\n

Ch\u1ee5p ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ee7a c\u00e1c gi\u1ecdt l\u1edbn<\/strong><\/h2>\n

C\u00e1c gi\u1ecdt l\u1edbn \u0111\u00f3ng g\u00f3i nhi\u1ec1u kh\u1ed1i l\u01b0\u1ee3ng h\u01a1n, l\u00e0m cho ch\u00fang tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau ch\u00ednh \u0111\u1ec3 t\u00e1ch. Tuy nhi\u00ean, ch\u00fang th\u01b0\u1eddng tr\u01b0\u1ee3t qua n\u1ebfu c\u00e1c thi\u1ebft k\u1ebf b\u1ecf qua inertia c\u1ee7a ch\u00fang. NHD’ chevron demister xu\u1ea5t s\u1eafc \u1edf \u0111\u00e2y, s\u1eed d\u1ee5ng s\u00f3ng \u0111a c\u1ea5p \u0111\u1ec3 b\u1eaft ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u n\u00e0y t\u0103ng \u0111\u1ed9 tinh khi\u1ebft t\u1ed5ng th\u1ec3 trong thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i. Ch\u00fang t\u00f4i’ Ch\u00fang t\u00f4i s\u1ebd t\u00ecm hi\u1ec3u t\u1ea1i sao c\u00e1c gi\u1ecdt n\u00e0y \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00fa \u00fd, c\u00e1ch k\u1ef9 thu\u1eadt khai th\u00e1c c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 b\u1eb1ng ch\u1ee9ng t\u1eeb c\u00e1c cu\u1ed9c ch\u1ea1y th\u1ef1c t\u1ebf.<\/p>\n

\"\"<\/p>\n

T\u1ea1i sao gi\u1ecdt l\u1edbn quan tr\u1ecdng<\/strong><\/h3>\n

C\u00e1c gi\u1ecdt l\u1edbn, th\u01b0\u1eddng c\u00f3 trong h\u1ec7 th\u1ed1ng FGD \u01b0\u1edbt v\u00e0 m\u00e1y t\u1ea9y, mang m\u1ed9t t\u1ef7 l\u1ec7 kh\u00f4ng t\u01b0\u01a1ng x\u1ee9ng c\u1ee7a t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng trong d\u00f2ng kh\u00ed. Khi \u0111\u01b0\u1ee3c k\u00e9o l\u1ea1i, ch\u00fang c\u00f3 th\u1ec3 k\u00e9o c\u00e1c gi\u1ecdt s\u01b0\u01a1ng m\u1ecbn h\u01a1n, l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 s\u1ef1 chuy\u1ec3n ti\u1ebfp ch\u1ea5t l\u1ecfng t\u1ed5ng th\u1ec3.<\/p>\n

Trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 th\u00e1p s\u1ea5y, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u00e0m \u01b0\u1edbt s\u1ea3n ph\u1ea9m, gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng h\u1ea1 l\u01b0u kh\u00f4ng \u1ed5n \u0111\u1ecbnh. T\u1eeb quan \u0111i\u1ec3m t\u00e1ch kh\u00ed-l\u1ecfng, lo\u1ea1i b\u1ecf s\u1edbm v\u00e0 hi\u1ec7u qu\u1ea3 c\u00e1c gi\u1ecdt l\u1edbn l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00ec h\u00e0nh vi c\u1ee7a ch\u00fang c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn nh\u1ea5t \u0111\u1ebfn hi\u1ec7u qu\u1ea3 t\u00e1ch, \u1ed5n \u0111\u1ecbnh ho\u1ea1t \u0111\u1ed9ng v\u00e0 t\u1ed5ng chi ph\u00ed ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho t\u00e1ch qu\u00e1i l\u1ef1c cao<\/strong><\/h3>\n

Trong c\u00e1c thi\u1ebft b\u1ecb lo\u1ea1i b\u1ecf c\u00e1nh tay chevron, s\u1ef1 t\u00e1ch \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi c\u00e1c hi\u1ec7u \u1ee9ng inertia: trong khi d\u00f2ng kh\u00ed theo nh\u1eefng thay \u0111\u1ed5i h\u01b0\u1edbng do h\u00ecnh h\u1ecdc c\u00e1nh tay \u00e1p \u0111\u1eb7t, c\u00e1c gi\u1ecdt l\u1ecfng - do inertia cao h\u01a1n c\u1ee7a ch\u00fang - kh\u00f4ng th\u1ec3 theo c\u00f9ng m\u1ed9t con \u0111\u01b0\u1eddng v\u00e0 thay v\u00e0o \u0111\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn b\u1ec1 m\u1eb7t c\u00e1nh tay.<\/p>\n

C\u1ea5u h\u00ecnh l\u01b0\u1ee1i \u1ed1ng v\u00e0 lo\u1ea1i s\u00f3ng c\u1ee7a NHD t\u0103ng c\u01b0\u1eddng c\u01a1 ch\u1ebf n\u00e0y b\u1eb1ng c\u00e1ch gi\u1edbi thi\u1ec7u \u0111\u1ed9 cong ki\u1ec3m so\u00e1t v\u00e0 g\u00f3c xoay t\u1ed1i \u01b0u h\u00f3a, \u0111\u1ea3m b\u1ea3o t\u00e1c \u0111\u1ed9ng gi\u1ecdt hi\u1ec7u qu\u1ea3 ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n t\u1ed1c \u0111\u1ed9 kh\u00ed cao \u0111\u1eb7c tr\u01b0ng cho thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh. Thi\u1ebft k\u1ebf gi\u1ea3m thi\u1ec3u v\u01b0\u1ee3t qua kh\u00ed v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t t\u00e1ch \u1ed5n \u0111\u1ecbnh trong ch\u1ebf \u0111\u1ed9 d\u00f2ng ch\u1ea3y bi\u1ebfn \u0111\u1ed9ng, n\u01a1i t\u00e1ch qu\u00e1i l\u1ef1c l\u00e0 quan tr\u1ecdng nh\u1ea5t.<\/p>\n

Hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf<\/strong><\/h3>\n

D\u1eef li\u1ec7u hi\u1ec7u su\u1ea5t hi\u1ec7n tr\u01b0\u1eddng t\u1eeb c\u00e1c h\u1ec7 th\u1ed1ng kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i cho th\u1ea5y r\u1eb1ng m\u00e1y kh\u1eed l\u01b0u hu\u1ef3nh chevron c\u1ee7a NHD li\u00ean t\u1ee5c \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 thu h\u00fat h\u01a1n 95% cho c\u00e1c gi\u1ecdt <\/b><\/strong>\u2265<\/b><\/strong>\u00a0<\/b><\/strong>20<\/b><\/strong>\u00a0\u03bcm<\/b><\/strong>\u00a0trong \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng c\u00f4ng nghi\u1ec7p \u0111i\u1ec3n h\u00ecnh.<\/p>\n

Trong c\u00e1c \u1ee9ng d\u1ee5ng s\u1ea3n xu\u1ea5t \u0111i\u1ec7n v\u00e0 x\u1eed l\u00fd h\u00f3a ch\u1ea5t, m\u1ee9c \u0111\u1ed9 hi\u1ec7u qu\u1ea3 n\u00e0y \u0111\u01b0\u1ee3c duy tr\u00ec ngay c\u1ea3 d\u01b0\u1edbi t\u1ea3i tr\u1ecdng ch\u1ea5t l\u1ecfng cao, trong khi c\u1ea5u tr\u00fac c\u00e1nh chevron b\u1ea3o t\u1ed3n \u0111\u1eb7c \u0111i\u1ec3m gi\u1ea3m \u00e1p su\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p c\u1ee7a c\u00e1c ch\u1ea5t th\u1ea3i inertial. S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a hi\u1ec7u qu\u1ea3 t\u00e1ch \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u00e1ng d\u00f2ng ch\u1ea3y \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t l\u00e0m cho lo\u1ea1i demister chevron tr\u1edf th\u00e0nh m\u1ed9t gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady cho t\u00e1ch kh\u00ed-ch\u1ea5t l\u1ecfng l\u00e2u d\u00e0i trong thi\u1ebft b\u1ecb FGD.<\/p>\n

L\u1ee3i \u00edch c\u1ee7a NHD Chevron Vane Demister<\/strong><\/h2>\n

NHD’ thi\u1ebft k\u1ebf mang l\u1ea1i l\u1ee3i \u00edch h\u1eefu h\u00ecnh tr\u00ean c\u00e1c ho\u1ea1t \u0111\u1ed9ng. T\u1eeb m\u1ed9t c\u1ea5p \u1ed1ng \u0111\u1ebfn c\u00e1c ng\u0103n ch\u1ed3ng \u0111a s\u00f3ng, n\u00f3 l\u00e0m gi\u1ea3m gi\u1ecdt v\u00e0 l\u00e0m s\u1ea1ch c\u00e1c \u0111i\u1ec3m m\u00f9. Chevron vane demister n\u00e0y ph\u00f9 h\u1ee3p li\u1ec1n m\u1ea1ch v\u1edbi thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh. H\u01a1n n\u1eefa, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee7a b\u1ea1n.<\/p>\n

\"\"<\/p>\n

\u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 n\u0103ng su\u1ea5t<\/strong><\/h3>\n

C\u1ea5u h\u00ecnh c\u00e1nh h\u00ecnh \u1ed1ng v\u00e0 lo\u1ea1i s\u00f3ng trong b\u1ed9 di chuy\u1ec3n chevron c\u1ee7a NHD \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u1ea3m m\u1ea5t \u00e1p su\u1ea5t trong khi lo\u1ea1i b\u1ecf c\u00e1c v\u00f9ng ch\u1ebft r\u1eeda, \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac kh\u00ed-ch\u1ea5t l\u1ecfng \u0111\u1ed3ng nh\u1ea5t tr\u00ean to\u00e0n b\u1ed9 khu v\u1ef1c t\u00e1ch. Th\u00f4ng qua c\u00e1c thi\u1ebft k\u1ebf kh\u00f4ng ti\u00eau chu\u1ea9n, c\u1ee5 th\u1ec3 \u1ee9ng d\u1ee5ng, di\u1ec7n t\u00edch t\u00e1ch hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ed1i \u0111a h\u00f3a, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t t\u00e1ch kh\u00ed-ch\u1ea5t l\u1ecfng \u1ed5n \u0111\u1ecbnh v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c h\u01a1n.<\/p>\n

Trong h\u1ec7 th\u1ed1ng x\u1eed l\u00fd h\u00f3a ch\u1ea5t v\u00e0 FGD, s\u1ef1 \u1ed5n \u0111\u1ecbnh n\u00e0y chuy\u1ec3n th\u00e0nh c\u00e1c d\u00f2ng kh\u00ed s\u1ea1ch h\u01a1n, gi\u1ea3m l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng v\u00e0 tu\u00e2n th\u1ee7 nh\u1ea5t qu\u00e1n c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt s\u1ea3n ph\u1ea9m ho\u1eb7c kh\u00ed th\u1ea3i h\u1ea1 l\u01b0u. B\u1eb1ng c\u00e1ch duy tr\u00ec c\u00e1c \u0111i\u1ec1u ki\u1ec7n d\u00f2ng ch\u1ea3y \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 hi\u1ec7u qu\u1ea3 t\u00e1ch \u0111\u00e1ng tin c\u1eady, m\u00e1y ti\u00eau tan c\u00e1nh chevron h\u1ed7 tr\u1ee3 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m b\u1ec1n v\u1eefng v\u00e0 n\u0103ng su\u1ea5t quy tr\u00ecnh t\u1ed5ng th\u1ec3.<\/p>\n

Gi\u1ea3m b\u1ea3o tr\u00ec & amp; M\u1edf d\u00e0i tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb<\/strong><\/h3>\n

Chevron vane demister \u0111\u01b0\u1ee3c trang b\u1ecb h\u1ec7 th\u1ed1ng r\u1eeda tr\u00ean v\u00e0 d\u01b0\u1edbi hi\u1ec7u qu\u1ea3 li\u00ean t\u1ee5c lo\u1ea1i b\u1ecf ch\u1ea5t l\u1ecfng v\u00e0 ch\u1ea5t r\u1eafn t\u00edch l\u0169y, gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 t\u1eafc ngh\u1ebdn trong ho\u1ea1t \u0111\u1ed9ng l\u00e2u d\u00e0i. Kh\u1ea3 n\u0103ng t\u1ef1 l\u00e0m s\u1ea1ch n\u00e0y \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb trong m\u00f4i tr\u01b0\u1eddng FGD v\u1edbi t\u1ea3i tr\u1ecdng ch\u1ea5t l\u1ecfng cao v\u00e0 ch\u1ea5t r\u1eafn treo.<\/p>\n

T\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n demister \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c quy tr\u00ecnh h\u00ecnh th\u00e0nh l\u1ea1nh m\u00e0 kh\u00f4ng c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ed9 cao, b\u1ea3o t\u1ed3n \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc ban \u0111\u1ea7u v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u. K\u1ebft qu\u1ea3 l\u00e0, demister duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian s\u1eed d\u1ee5ng k\u00e9o d\u00e0i, d\u1eabn \u0111\u1ebfn t\u1ea7n s\u1ed1 b\u1ea3o tr\u00ec gi\u1ea3m, t\u1eaft kh\u00f4ng c\u00f3 k\u1ebf ho\u1ea1ch \u00edt h\u01a1n v\u00e0 tu\u1ed5i th\u1ecd ho\u1ea1t \u0111\u1ed9ng l\u00e2u h\u01a1n trong c\u00e1c h\u1ec7 th\u1ed1ng kh\u1eed l\u01b0u hu\u1ef3nh kh\u00ed kh\u00f3i.<\/p>\n

T\u00f9y ch\u1ec9nh<\/strong>h\u1ea1ng<\/strong>\u00a0cho \u0110\u01b0\u1eddng k\u00ednh th\u00e1p, T\u1ed1c \u0111\u1ed9 kh\u00ed & T\u1ea3i tr\u1ecdng ch\u1ea5t l\u1ecfng<\/strong><\/h3>\n

S\u1ea3n ph\u1ea9m n\u00e0y l\u00e0 m\u1ed9t thi\u1ebft k\u1ebf kh\u00f4ng ti\u00eau chu\u1ea9n v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. C\u00e1c v\u1eadt li\u1ec7u kim lo\u1ea1i kh\u00e1c nhau c\u00f3 s\u1eb5n, c\u0169ng nh\u01b0 v\u1eadt li\u1ec7u polypropylene t\u0103ng c\u01b0\u1eddng ch\u1ed1ng nhi\u1ec7t \u0111\u1ed9 cao nh\u1eadp kh\u1ea9u, c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 l\u00ean \u0111\u1ebfn 100 \u2103. V\u00e0 n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t ngang ho\u1eb7c d\u1ecdc, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau. \u0110i\u1ec1u ch\u1ec9nh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n cho t\u1ef7 l\u1ec7 d\u00f2ng ch\u1ea3y v\u00e0 t\u1ea3i kh\u00e1c nhau. Do \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t demister c\u1ee7a ch\u00fang t\u00f4i ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb kh\u1eed l\u01b0u hu\u1ef3nh kh\u00e1c nhau, c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u qu\u1ea3 t\u00e1ch kh\u00ed-ch\u1ea5t l\u1ecfng.<\/p>\n