{"id":875,"date":"2026-10-09T09:10:58","date_gmt":"2026-10-09T01:10:58","guid":{"rendered":"https:\/\/anchor-filter.com\/catalytic-ceramic-filter-vs-scr\/"},"modified":"2026-10-10T13:07:34","modified_gmt":"2026-10-10T05:07:34","slug":"bo-loc-gom-xuc-tac-so-voi-scr","status":"publish","type":"post","link":"https:\/\/anchor-filter.com\/vi\/catalytic-ceramic-filter-vs-scr\/","title":{"rendered":"So s\u00e1nh B\u1ed9 l\u1ecdc G\u1ed1m X\u00fac t\u00e1c v\u1edbi SCR: Chi ph\u00ed \u0111\u1ea7u t\u01b0, Chi ph\u00ed v\u1eadn h\u00e0nh v\u00e0 Di\u1ec7n t\u00edch"},"content":{"rendered":"

Cu\u1ed9c tranh lu\u1eadn gi\u1eefa b\u1ed9 l\u1ecdc g\u1ed1m x\u00fac t\u00e1c v\u00e0 SCR th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t trong khu\u00f4n kh\u1ed5 m\u1ed9t cu\u1ed9c thi c\u00f4ng ngh\u1ec7, nh\u01b0ng trong m\u1ed9t d\u1ef1 \u00e1n th\u1ef1c t\u1ebf, n\u00f3 h\u1ea7u nh\u01b0 lu\u00f4n l\u00e0 c\u00e2u h\u1ecfi v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb. C\u1ea3 hai ph\u01b0\u01a1ng \u00e1n \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ea1t c\u00f9ng m\u1ed9t ch\u1ec9 s\u1ed1 NOx t\u1ea1i \u1ed1ng kh\u00f3i; \u0111i\u1ec1u kh\u00e1c bi\u1ec7t l\u00e0 c\u1ea7n bao nhi\u00eau thi\u1ebft b\u1ecb, bao nhi\u00eau di\u1ec7n t\u00edch m\u1eb7t b\u1eb1ng v\u00e0 bao nhi\u00eau c\u00f4ng s\u1ee9c v\u1eadn h\u00e0nh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3. M\u1ed9t d\u00e2y chuy\u1ec1n th\u00f4ng th\u01b0\u1eddng \u0111\u1eb7t t\u00fai l\u1ecdc ho\u1eb7c b\u1ed9 l\u1ecdc t\u0129nh \u0111i\u1ec7n, th\u00e1p r\u1eeda \u01b0\u1edbt ho\u1eb7c b\u00e1n kh\u00f4 v\u00e0 l\u00f2 ph\u1ea3n \u1ee9ng SCR n\u1ed1i ti\u1ebfp nhau, m\u1ed7i thi\u1ebft b\u1ecb c\u00f3 b\u00ecnh ch\u1ee9a, h\u1ec7 th\u1ed1ng \u1ed1ng d\u1eabn, t\u1ea3i qu\u1ea1t v\u00e0 tri\u1ebft l\u00fd \u0111i\u1ec1u khi\u1ec3n ri\u00eang. B\u1ed9 l\u1ecdc g\u1ed1m x\u00fac t\u00e1c g\u1ed9p vi\u1ec7c lo\u1ea1i b\u1ecf h\u1ea1t, kh\u1eed l\u01b0u hu\u1ef3nh, kh\u1eed NOx v\u00e0 ph\u00e2n h\u1ee7y dioxin v\u00e0o m\u1ed9t v\u1ecf thi\u1ebft b\u1ecb. B\u00e0i vi\u1ebft n\u00e0y so s\u00e1nh hai ph\u01b0\u01a1ng \u00e1n v\u1ec1 chi ph\u00ed \u0111\u1ea7u t\u01b0, chi ph\u00ed v\u1eadn h\u00e0nh, di\u1ec7n t\u00edch chi\u1ebfm ch\u1ed7 v\u00e0 r\u1ee7i ro, bao g\u1ed3m c\u1ea3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p SCR v\u1eabn l\u00e0 gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt t\u1ed1t h\u01a1n.<\/p>\n

\"D\u00e2y<\/figure>\n

D\u00e2y chuy\u1ec1n th\u00f4ng th\u01b0\u1eddng: Ba h\u1ec7 th\u1ed1ng n\u1ed1i ti\u1ebfp<\/h2>\n

C\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n cho l\u00f2 \u0111\u1ed1t r\u00e1c, l\u00f2 nung xi m\u0103ng ho\u1eb7c l\u00f2 h\u01a1i sinh kh\u1ed1i h\u1ea7u nh\u01b0 kh\u00f4ng thay \u0111\u1ed5i trong hai m\u01b0\u01a1i n\u0103m. H\u1ea1t \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf tr\u01b0\u1edbc ti\u00ean, trong t\u00fai l\u1ecdc ho\u1eb7c b\u1ed9 l\u1ecdc t\u0129nh \u0111i\u1ec7n, v\u00ec m\u1ecdi th\u1ee9 ph\u00eda sau ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n v\u1edbi kh\u00ed s\u1ea1ch. Kh\u00ed axit sau \u0111\u00f3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd trong th\u00e1p r\u1eeda \u01b0\u1edbt ho\u1eb7c th\u00e1p phun h\u1ea5p th\u1ee5 b\u00e1n kh\u00f4, \u0111\u00e2y l\u00e0 n\u01a1i ph\u00e1t sinh ph\u1ea7n l\u1edbn l\u01b0\u1ee3ng n\u01b0\u1edbc ti\u00eau th\u1ee5 v\u00e0 d\u00f2ng n\u01b0\u1edbc th\u1ea3i. Cu\u1ed1i c\u00f9ng, kh\u00ed \u0111\u01b0\u1ee3c gia nhi\u1ec7t l\u1ea1i v\u00e0 cho qua l\u00f2 ph\u1ea3n \u1ee9ng SCR \u0111\u1ec3 kh\u1eed NOx, v\u00ec x\u00fac t\u00e1c c\u1ea7n m\u1ed9t kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 m\u00e0 \u0111\u1ea7u ra c\u1ee7a th\u00e1p r\u1eeda kh\u00f4ng th\u1ec3 t\u1ef1 \u0111\u00e1p \u1ee9ng.<\/p>\n

M\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u \u0111\u01b0\u1ee3c hi\u1ec3u r\u00f5 v\u00e0 t\u1ed1i \u01b0u ri\u00eang l\u1ebb, \u0111\u00f3 ch\u00ednh l\u00e0 l\u00fd do c\u1ea5u h\u00ecnh n\u00e0y v\u1eabn t\u1ed3n t\u1ea1i. \u0110i\u1ec3m y\u1ebfu l\u00e0 s\u1ef1 t\u00edch t\u1ee5: ba ngu\u1ed3n g\u00e2y t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t n\u1ed1i ti\u1ebfp, ba h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n, ba b\u1ed9 ph\u1ee5 t\u00f9ng thay th\u1ebf, ba ph\u1ea1m vi nh\u00e0 cung c\u1ea5p v\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 gia nhi\u1ec7t l\u1ea1i \u0111\u01b0\u1ee3c ch\u00e8n gi\u1eefa b\u01b0\u1edbc hai v\u00e0 b\u01b0\u1edbc ba ch\u1ec9 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng x\u00fac t\u00e1c. Khi b\u1ea1n c\u1ed9ng l\u1ea1i c\u00e1c \u1ed1ng d\u1eabn, c\u00e1c kh\u1edbp gi\u00e3n n\u1edf v\u00e0 c\u00e1c s\u00e0n thao t\u00e1c, chi\u1ec1u d\u00e0i v\u1eadt l\u00fd c\u1ee7a d\u00e2y chuy\u1ec1n th\u01b0\u1eddng v\u01b0\u1ee3t qu\u00e1 kh\u00f4ng gian c\u00f3 s\u1eb5n t\u1ea1i m\u1ed9t \u0111\u1ecba \u0111i\u1ec3m c\u1ea3i t\u1ea1o t\u1eeb r\u1ea5t l\u00e2u tr\u01b0\u1edbc khi thi\u1ebft k\u1ebf quy tr\u00ecnh ho\u00e0n t\u1ea5t.<\/p>\n

Gi\u1ea3i ph\u00e1p t\u00edch h\u1ee3p: M\u1ed9t b\u00ecnh ch\u1ee9a, b\u1ed1n ch\u1ee9c n\u0103ng<\/h2>\n

Ph\u1ea7n t\u1eed l\u1ecdc g\u1ed1m x\u00fac t\u00e1c l\u00e0 m\u1ed9t \u1ed1ng n\u1ebfn c\u1ee9ng v\u1edbi x\u00fac t\u00e1c \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 xuy\u00ean qua th\u00e0nh thay v\u00ec ph\u1ee7 l\u00ean b\u00ean ngo\u00e0i. Kh\u00ed ch\u1ea3y t\u1eeb ph\u00eda b\u1ea9n v\u00e0o trong, h\u1ea1t \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t ngo\u00e0i v\u1edbi hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n 99,9%, v\u00e0 kh\u00ed sau \u0111\u00f3 \u0111i qua m\u1ed9t l\u1edbp x\u00fac t\u00e1c ho\u1ea1t \u0111\u1ed9ng d\u00e0y 20 mm tr\u01b0\u1edbc khi \u0111\u1ebfn khoang kh\u00ed s\u1ea1ch. N\u1ebfu amoniac \u0111\u01b0\u1ee3c phun v\u00e0o ph\u00eda tr\u01b0\u1edbc, qu\u00e1 tr\u00ecnh kh\u1eed NOx di\u1ec5n ra trong c\u00f9ng th\u00e0nh \u0111\u00f3; n\u1ebfu nhi\u1ec7t \u0111\u1ed9 n\u1eb1m trong d\u1ea3i 170\u2013300 \u00b0C v\u1edbi t\u1ed1i \u01b0u \u1edf 220\u2013260 \u00b0C, dioxin \u0111\u1ed3ng th\u1eddi b\u1ecb oxy h\u00f3a th\u00e0nh CO\u2082, H\u2082O v\u00e0 HCl.<\/p>\n

\"Thi\u1ebft<\/figure>\n

Hi\u1ec7u su\u1ea5t kh\u1eed NOx tu\u00e2n theo c\u00f9ng \u0111\u01b0\u1eddng cong nh\u01b0 b\u1ea5t k\u1ef3 x\u00fac t\u00e1c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p n\u00e0o: kho\u1ea3ng 90% \u1edf 200 \u00b0C t\u0103ng l\u00ean 98% \u1edf 280 \u00b0C, v\u1edbi m\u1ee9c ph\u00e2n h\u1ee7y dioxin \u0111\u1ea1t t\u1edbi 99,5% (TEQ) trong d\u1ea3i t\u1ed1i \u01b0u. Kh\u1eed l\u01b0u hu\u1ef3nh \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1ch phun b\u1ed9t ki\u1ec1m kh\u00f4 v\u00e0o \u1ed1ng d\u1eabn ph\u00eda tr\u01b0\u1edbc b\u00ecnh ch\u1ee9a; s\u1ea3n ph\u1ea9m ph\u1ea3n \u1ee9ng h\u00f2a v\u00e0o b\u00e1nh b\u1ee5i v\u00e0 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf b\u1eb1ng c\u00f9ng h\u1ec7 th\u1ed1ng phun xung. Kh\u00f4ng c\u00f3 th\u00e1p r\u1eeda, kh\u00f4ng c\u00f3 b\u01a1m tu\u1ea7n ho\u00e0n, kh\u00f4ng c\u00f3 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i. C\u00e1c t\u00f9y ch\u1ecdn thi c\u00f4ng \u0111\u1ea7y \u0111\u1ee7 v\u00e0 n\u1ea1p x\u00fac t\u00e1c \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 tr\u00ean trang b\u1ed9 l\u1ecdc s\u1ee3i g\u1ed1m x\u00fac t\u00e1c<\/a> c\u1ee7a ch\u00fang t\u00f4i, v\u00e0 nguy\u00ean l\u00fd v\u1eadn h\u00e0nh \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch t\u1eebng b\u01b0\u1edbc t\u1ea1i nguy\u00ean l\u00fd<\/a>.<\/p>\n

Chi ph\u00ed \u0111\u1ea7u t\u01b0: Ti\u1ec1n th\u1ef1c s\u1ef1 \u0111i \u0111\u00e2u<\/h2>\n

Kh\u00f4ng c\u00f3 c\u00e1ch trung th\u1ef1c n\u00e0o \u0111\u1ec3 \u0111\u01b0a ra m\u1ed9t t\u1ef7 l\u1ec7 chi ph\u00ed \u0111\u1ea7u t\u01b0 ph\u1ed5 qu\u00e1t, v\u00ec n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o l\u01b0u l\u01b0\u1ee3ng kh\u00ed, h\u00e0m l\u01b0\u1ee3ng l\u01b0u hu\u1ef3nh, gi\u1edbi h\u1ea1n gi\u1ea5y ph\u00e9p v\u00e0 m\u1ee9c \u0111\u1ed9 c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng m\u00e0 \u0111\u1ecba \u0111i\u1ec3m c\u1ea7n. \u0110i\u1ec1u c\u00f3 th\u1ec3 so s\u00e1nh l\u00e0 s\u1ed1 l\u01b0\u1ee3ng trung t\u00e2m chi ph\u00ed. D\u00e2y chuy\u1ec1n th\u00f4ng th\u01b0\u1eddng bao g\u1ed3m b\u1ed9 l\u1ecdc t\u0129nh \u0111i\u1ec7n ho\u1eb7c t\u00fai l\u1ecdc, th\u00e1p r\u1eeda v\u1edbi h\u1ec7 th\u1ed1ng tu\u1ea7n ho\u00e0n v\u00e0 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i, giai \u0111o\u1ea1n gia nhi\u1ec7t l\u1ea1i, l\u00f2 ph\u1ea3n \u1ee9ng SCR v\u1edbi l\u01b0\u1edbi phun amoniac v\u00e0 k\u1ebft c\u1ea5u th\u00e9p ri\u00eang, c\u1ed9ng v\u1edbi h\u1ec7 th\u1ed1ng \u1ed1ng d\u1eabn k\u1ebft n\u1ed1i gi\u1eefa t\u1ea5t c\u1ea3 ch\u00fang. Gi\u1ea3i ph\u00e1p t\u00edch h\u1ee3p bao g\u1ed3m m\u1ed9t b\u00ecnh ch\u1ee9a, m\u1ed9t h\u1ec7 th\u1ed1ng lo\u1ea1i b\u1ecf b\u1ee5i, m\u1ed9t skid phun ch\u1ea5t h\u1ea5p th\u1ee5 v\u00e0 m\u1ed9t skid amoniac.<\/p>\n

B\u1ea3n th\u00e2n ph\u1ea7n t\u1eed \u0111\u1eaft h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch l\u1ecdc so v\u1edbi t\u00fai l\u1ecdc, \u0111i\u1ec1u n\u00e0y g\u00e2y ng\u1ea1c nhi\u00ean cho ng\u01b0\u1eddi mua ch\u1ec9 so s\u00e1nh gi\u00e1 v\u1eadt li\u1ec7u l\u1ecdc. So s\u00e1nh \u0111\u00f3 g\u00e2y hi\u1ec3u l\u1ea7m: ph\u1ea7n t\u1eed x\u00fac t\u00e1c thay th\u1ebf v\u1eadt li\u1ec7u l\u1ecdc, x\u00fac t\u00e1c SCR v\u00e0 m\u1ed9t ph\u1ea7n th\u00e1p r\u1eeda trong m\u1ed9t l\u1ea7n mua. N\u01a1i kinh t\u1ebf th\u01b0\u1eddng chuy\u1ec3n bi\u1ebfn quy\u1ebft \u0111\u1ecbnh l\u00e0 ph\u1ea7n c\u00e2n b\u1eb1ng nh\u00e0 m\u00e1y \u2014 m\u00f3ng x\u00e2y d\u1ef1ng, k\u1ebft c\u1ea5u th\u00e9p, \u1ed1ng d\u1eabn, c\u00e1ch nhi\u1ec7t, c\u00e1p v\u00e0 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng \u2014 m\u00e0 \u0111\u1ed1i v\u1edbi d\u00e2y chuy\u1ec1n ba b\u00ecnh ch\u1ee9a c\u00f3 th\u1ec3 b\u1eb1ng ho\u1eb7c v\u01b0\u1ee3t chi ph\u00ed thi\u1ebft b\u1ecb quy tr\u00ecnh.<\/p>\n

Chi ph\u00ed v\u1eadn h\u00e0nh: N\u0103ng l\u01b0\u1ee3ng, n\u01b0\u1edbc v\u00e0 amoniac<\/h2>\n\n\n\n\n\n\n\n
Y\u1ebfu t\u1ed1 chi ph\u00ed<\/th>\nD\u00e2y chuy\u1ec1n th\u00f4ng th\u01b0\u1eddng (ESP\/t\u00fai l\u1ecdc + th\u00e1p r\u1eeda + SCR)<\/th>\nB\u1ed9 l\u1ecdc g\u1ed1m x\u00fac t\u00e1c t\u00edch h\u1ee3p<\/th>\n<\/tr>\n
Nhi\u1ec7m v\u1ee5 gia nhi\u1ec7t l\u1ea1i<\/td>\nKh\u00ed ph\u1ea3i \u0111\u01b0\u1ee3c gia nhi\u1ec7t l\u1ea1i sau khi r\u1eeda \u01b0\u1edbt ho\u1eb7c b\u00e1n kh\u00f4 \u0111\u1ec3 \u0111\u1ea1t d\u1ea3i SCR, th\u01b0\u1eddng b\u1eb1ng kh\u00ed, h\u01a1i n\u01b0\u1edbc ho\u1eb7c b\u1ed9 trao \u0111\u1ed5i kh\u00ed-kh\u00ed<\/td>\nKh\u00f4ng; d\u1ea3i x\u00fac t\u00e1c 170\u2013300 \u00b0C \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u00e0 kh\u00f4ng c\u1ea7n gia nhi\u1ec7t l\u1ea1i<\/td>\n<\/tr>\n
N\u01b0\u1edbc v\u00e0 n\u01b0\u1edbc th\u1ea3i<\/td>\nN\u01b0\u1edbc b\u1ed5 sung cho th\u00e1p r\u1eeda c\u1ed9ng v\u1edbi ngh\u0129a v\u1ee5 x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i<\/td>\nCh\u1ec9 ch\u1ea5t h\u1ea5p th\u1ee5 kh\u00f4; kh\u00f4ng c\u00f3 n\u01b0\u1edbc th\u1ea3i l\u1ecfng<\/td>\n<\/tr>\n
T\u1ed5n th\u1ea5t \u00e1p su\u1ea5t<\/td>\nBa l\u1ef1c c\u1ea3n n\u1ed1i ti\u1ebfp c\u1ed9ng v\u1edbi b\u1ed9 trao \u0111\u1ed5i gia nhi\u1ec7t l\u1ea1i<\/td>\nPh\u1ea7n t\u1eed s\u1ea1ch 300 Pa \u1edf v\u1eadn t\u1ed1c m\u1eb7t 1 m\/ph\u00fat; s\u1ee9c c\u1ea3n h\u1ec7 th\u1ed1ng 900\u20131.500 Pa<\/td>\n<\/tr>\n
Ti\u00eau th\u1ee5 amoniac<\/td>\nStoichiometric \u1edf 300\u2013400 \u00b0C v\u1edbi khu\u1ea5y tr\u1ed9n t\u1ed1t<\/td>\nT\u1ef7 l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u1ef1; \u0111\u1ed9 tr\u01b0\u1ee3t ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd c\u1ea9n th\u1eadn h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p<\/td>\n<\/tr>\n
V\u1eadt t\u01b0 ti\u00eau hao<\/td>\nT\u00fai ho\u1eb7c \u0111i\u1ec7n c\u1ef1c, h\u00f3a ch\u1ea5t th\u00e1p r\u1eeda, thay th\u1ebf x\u00fac t\u00e1c SCR<\/td>\nC\u00e1c ph\u1ea7n t\u1eed theo chu k\u1ef3 nhi\u1ec1u n\u0103m, ch\u1ea5t h\u1ea5p ph\u1ee5 kh\u00f4<\/td>\n<\/tr>\n<\/table>\n

Kho\u1ea3n chi ph\u00ed v\u1eadn h\u00e0nh l\u1edbn nh\u1ea5t bi\u1ebfn m\u1ea5t trong tuy\u1ebfn t\u00edch h\u1ee3p l\u00e0 gia nhi\u1ec7t l\u1ea1i. Vi\u1ec7c n\u00e2ng v\u00e0i tr\u0103m ngh\u00ecn m\u00e9t kh\u1ed1i kh\u00ed \u0111\u00e3 qua r\u1eeda m\u1ed7i gi\u1edd l\u00ean 60\u2013100 K l\u00e0 m\u1ed9t h\u00f3a \u0111\u01a1n nhi\u00ean li\u1ec7u ho\u1eb7c h\u01a1i n\u01b0\u1edbc th\u01b0\u1eddng tr\u1ef1c kh\u00f4ng bao gi\u1edd xu\u1ea5t hi\u1ec7n trong m\u1ee5c chi ph\u00ed th\u00e1p r\u1eeda, \u0111\u00f3 l\u00e0 l\u00fd do n\u00f3 th\u01b0\u1eddng b\u1ecb \u0111\u00e1nh gi\u00e1 th\u1ea5p trong c\u00e1c so s\u00e1nh. N\u01b0\u1edbc l\u00e0 kho\u1ea3n th\u1ee9 hai, v\u00e0 n\u00f3 \u0111i k\u00e8m v\u1edbi g\u00e1nh n\u1eb7ng v\u1ec1 c\u1ea5p ph\u00e9p v\u00e0 x\u1eed l\u00fd ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 chi ph\u00ed ti\u1ec7n \u00edch.<\/p>\n

Di\u1ec7n t\u00edch v\u00e0 Kh\u1ea3 n\u0103ng Th\u00edch \u1ee9ng C\u1ea3i t\u1ea1o<\/h2>\n

Di\u1ec7n t\u00edch l\u00e0 n\u01a1i hai tuy\u1ebfn kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t nh\u1ea5t. M\u1ed9t c\u1ee5m ba thi\u1ebft b\u1ecb c\u1ea7n chi\u1ec1u d\u00e0i tuy\u1ebfn t\u00ednh: kh\u00ed v\u00e0o \u1edf m\u1ed9t \u0111\u1ea7u v\u00e0 \u0111i qua c\u00e1c giai \u0111o\u1ea1n, v\u00e0 m\u1ed7i chuy\u1ec3n ti\u1ebfp \u0111\u00f2i h\u1ecfi \u1ed1ng d\u1eabn v\u1edbi k\u1ebft c\u1ea5u th\u00e9p \u0111\u1ee1 v\u00e0 l\u1ed1i ti\u1ebfp c\u1eadn ri\u00eang. M\u1ed9t thi\u1ebft b\u1ecb t\u00edch h\u1ee3p l\u00e0 m\u1ed9t v\u1ecf duy nh\u1ea5t th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean di\u1ec7n t\u00edch c\u1ee7a m\u1ed9t t\u00fai l\u1ecdc hi\u1ec7n h\u1eefu, \u0111\u00f3 l\u00e0 l\u00fd do vi\u1ec7c c\u1ea3i t\u1ea1o th\u01b0\u1eddng kh\u1ea3 thi t\u1ea1i c\u00e1c c\u01a1 s\u1edf m\u00e0 vi\u1ec7c th\u00eam m\u1ed9t l\u00f2 ph\u1ea3n \u1ee9ng SCR th\u00ec kh\u00f4ng.<\/p>\n

C\u00e1c ph\u1ea7n t\u1eed c\u00f3 k\u00edch th\u01b0\u1edbc \u03c6150 \u00d7 \u03c6110 \u00d7 3.000 mm v\u1edbi \u0111\u1ed9 d\u00e0y th\u00e0nh 20 mm, dung sai \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i \u00b12 mm \/ chi\u1ec1u d\u00e0i \u00b120 mm v\u00e0 >80%, v\u00e0 ch\u00fang \u0111\u01b0\u1ee3c treo t\u1eeb m\u1ed9t t\u1ea5m \u1ed1ng th\u00f4ng th\u01b0\u1eddng. V\u1eadn t\u1ed1c l\u1ecdc thi\u1ebft k\u1ebf l\u00e0 2\u20135 cm\/s (\u22481,2\u20133,0 m\u00b3\/ph\u00fat tr\u00ean m\u00b2). C\u00e1c \u1ed1ng g\u00f3p phun xung hi\u1ec7n h\u1eefu th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng v\u1edbi vi\u1ec7c thay v\u00f2i phun, l\u00e0m s\u1ea1ch \u1edf 0,4\u20130,7 MPa trong 0,1\u20130,15 gi\u00e2y theo k\u00edch ho\u1ea1t ch\u00eanh \u00e1p, v\u00e0 hi\u1ec7u su\u1ea5t lo\u1ea1i b\u1ecf h\u1ea1t v\u1eabn >99,9% trong to\u00e0n b\u1ed9 d\u1ea3i \u0111\u00f3. Hai ki\u1ec3m tra quy\u1ebft \u0111\u1ecbnh li\u1ec7u vi\u1ec7c c\u1ea3i t\u1ea1o c\u00f3 \u0111\u01a1n gi\u1ea3n hay kh\u00f4ng l\u00e0 bi\u00ean \u0111\u1ed9 qu\u1ea1t so v\u1edbi 900\u20131.500 Pa tr\u1edf l\u1ef1c h\u1ec7 th\u1ed1ng, v\u00e0 li\u1ec7u bi\u00ean d\u1ea1ng nhi\u1ec7t \u0111\u1ed9 kh\u00ed c\u00f3 \u0111\u01b0a thi\u1ebft b\u1ecb v\u00e0o d\u1ea3i x\u00fac t\u00e1c trong ph\u1ea7n l\u1edbn s\u1ed1 gi\u1edd v\u1eadn h\u00e0nh hay kh\u00f4ng.<\/p>\n

Ng\u1ed9 \u0111\u1ed9c X\u00fac t\u00e1c, T\u1eafc ngh\u1ebdn v\u00e0 Amoni Bisulfat<\/h2>\n

M\u1ecdi x\u00fac t\u00e1c \u0111\u1ec1u suy gi\u1ea3m; c\u00e2u h\u1ecfi l\u00e0 nhanh \u0111\u1ebfn m\u1ee9c n\u00e0o v\u00e0 c\u00f3 th\u1ec3 ph\u1ee5c h\u1ed3i \u0111\u1ebfn \u0111\u00e2u. C\u1ea3 hai tuy\u1ebfn \u0111\u1ec1u d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng b\u1edfi kim lo\u1ea1i ki\u1ec1m (natri v\u00e0 kali), kim lo\u1ea1i n\u1eb7ng nh\u01b0 ch\u00ec v\u00e0 k\u1ebdm, v\u00e0 b\u1edfi c\u00e1c ranh gi\u1edbi h\u00f3a h\u1ecdc \u00e1p d\u1ee5ng cho h\u1ec7 g\u1ed1m n\u00f3i chung \u2014 hydro florua tr\u00ean 5 ppm, s\u01b0\u01a1ng axit photphoric, v\u00e0 c\u00e1c oxit ki\u1ec1m khi kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t h\u1ea5p ph\u1ee5 ki\u1ec1m. S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf m\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac. Trong m\u1ed9t c\u1ee5m th\u00f4ng th\u01b0\u1eddng, x\u00fac t\u00e1c SCR n\u1eb1m ph\u00eda sau th\u00e1p r\u1eeda v\u00e0 thi\u1ebft b\u1ecb ki\u1ec3m so\u00e1t h\u1ea1t, n\u00ean n\u00f3 ti\u1ebfp x\u00fac v\u1edbi kh\u00ed t\u01b0\u01a1ng \u0111\u1ed1i s\u1ea1ch, \u0111\u00e3 kh\u1eed l\u01b0u hu\u1ef3nh. Trong m\u1ed9t thi\u1ebft b\u1ecb t\u00edch h\u1ee3p, x\u00fac t\u00e1c ti\u1ebfp x\u00fac v\u1edbi t\u1ea3i b\u1ee5i th\u00f4, \u0111\u00f3 l\u00e0 l\u00fd do hi\u1ec7u su\u1ea5t l\u1ecdc tr\u00ean 99,9% v\u00e0 l\u1edbp b\u00e1nh b\u1ee5i \u1ed5n \u0111\u1ecbnh l\u1ea1i quan tr\u1ecdng \u0111\u1ebfn v\u1eady \u0111\u1ed1i v\u1edbi tu\u1ed5i th\u1ecd x\u00fac t\u00e1c.<\/p>\n

R\u1ee7i ro chung kh\u00e1c l\u00e0 amoni bisulfat. D\u01b0\u1edbi kho\u1ea3ng 300 \u00b0C, SO\u2083, amoniac d\u01b0 v\u00e0 n\u01b0\u1edbc k\u1ebft h\u1ee3p th\u00e0nh m\u1ed9t gel d\u00ednh ng\u01b0ng t\u1ee5 trong c\u00e1c l\u1ed7 x\u1ed1p v\u00e0 tr\u00ean c\u00e1c t\u00e2m ho\u1ea1t \u0111\u1ed9ng, l\u00e0m t\u0103ng ch\u00eanh \u00e1p v\u00e0 gi\u1ea3m hi\u1ec7u su\u1ea5t DeNOx. V\u1eadn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p ch\u00ednh l\u00e0 nguy\u00ean nh\u00e2n t\u1ea1o ra r\u1ee7i ro, n\u00ean m\u1ed9t thi\u1ebft b\u1ecb t\u00edch h\u1ee3p ch\u1ea1y \u1edf 220\u2013260 \u00b0C c\u1ea7n ki\u1ec3m so\u00e1t amoniac nghi\u00eam ng\u1eb7t \u2014 t\u1ef7 l\u1ec7 mol amoniac tr\u00ean NOx l\u00e0 0,9\u20131,1 \u2014 v\u00e0, t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y c\u00f3 SO\u2083 \u0111\u00e1ng k\u1ec3, c\u1ea7n ng\u00e2m nhi\u1ec7t \u0111\u1ecbnh k\u1ef3 tr\u00ean 350 \u00b0C \u0111\u1ec3 ph\u00e2n h\u1ee7y nh\u1eefng g\u00ec \u0111\u00e3 h\u00ecnh th\u00e0nh. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd \u0111\u01b0\u1ee3c, nh\u01b0ng \u0111\u00f3 l\u00e0 m\u1ed9t k\u1ef7 lu\u1eadt v\u1eadn h\u00e0nh th\u1ef1c s\u1ef1 v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c ghi v\u00e0o s\u1ed5 tay v\u1eadn h\u00e0nh thay v\u00ec ph\u00e1t hi\u1ec7n sau n\u00e0y.<\/p>\n

Kh\u1ed1i l\u01b0\u1ee3ng B\u1ea3o tr\u00ec v\u00e0 Tu\u1ed5i th\u1ecd B\u1ed9 l\u1ecdc<\/h2>\n

B\u1ea3o tr\u00ec d\u1ec5 b\u1ecb \u0111\u00e1nh gi\u00e1 th\u1ea5p h\u01a1n chi ph\u00ed v\u1ed1n v\u00ec n\u00f3 tr\u1ea3i d\u00e0i qua nhi\u1ec1u n\u0103m. C\u1ee5m th\u00f4ng th\u01b0\u1eddng c\u00f3 thay t\u00fai ho\u1eb7c \u0111i\u1ec7n c\u1ef1c theo chu k\u1ef3 hai \u0111\u1ebfn b\u1ed1n n\u0103m, b\u1ea3o tr\u00ec b\u01a1m v\u00e0 v\u00f2i phun th\u00e1p r\u1eeda, l\u00e0m s\u1ea1ch b\u1ed9 trao \u0111\u1ed5i gia nhi\u1ec7t l\u1ea1i, v\u00e0 s\u00e0ng l\u1ecdc ho\u1eb7c thay th\u1ebf x\u00fac t\u00e1c SCR. M\u1ed7i ho\u1ea1t \u0111\u1ed9ng thu\u1ed9c m\u1ed9t chuy\u00ean ng\u00e0nh kh\u00e1c nhau v\u00e0 th\u01b0\u1eddng l\u00e0 m\u1ed9t nh\u00e0 th\u1ea7u kh\u00e1c nhau.<\/p>\n

Thi\u1ebft b\u1ecb t\u00edch h\u1ee3p t\u1eadp trung c\u00f4ng vi\u1ec7c \u0111\u00f3 v\u00e0o m\u1ed9t t\u00e0i s\u1ea3n. Tu\u1ed5i th\u1ecd ph\u1ea7n t\u1eed l\u00e0 h\u01a1n 5 n\u0103m trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng v\u00e0 \u0111i k\u00e8m b\u1ea3o h\u00e0nh b\u1eb1ng v\u0103n b\u1ea3n 5 n\u0103m, v\u00e0 ph\u1ea7n t\u1eed \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u01a1 h\u1ecdc cho v\u1eadn h\u00e0nh li\u00ean t\u1ee5c \u1edf 1100 \u00b0C v\u1edbi c\u00e1c dao \u0111\u1ed9ng ng\u1eafn h\u1ea1n \u0111\u1ebfn 1300 \u00b0C kh\u00f4ng qu\u00e1 30 ph\u00fat, \u0111i\u1ec1u n\u00e0y lo\u1ea1i b\u1ecf r\u1ee7i ro dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 v\u1ed1n ph\u00e1 h\u1ee7y t\u00fai l\u1ecdc. C\u00f4ng vi\u1ec7c h\u00e0ng ng\u00e0y ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf ki\u1ec3m tra h\u1ec7 th\u1ed1ng phun xung, c\u1ea5p ch\u1ea5t h\u1ea5p ph\u1ee5 v\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng amoniac. D\u1eef li\u1ec7u hi\u1ec7u su\u1ea5t \u0111o \u0111\u01b0\u1ee3c tr\u00ean to\u00e0n b\u1ed9 ph\u1ea1m vi v\u1eadn h\u00e0nh \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean hi\u1ec7u su\u1ea5t<\/a> trang.<\/p>\n

Khi n\u00e0o SCR v\u1eabn l\u00e0 C\u00e2u tr\u1ea3 l\u1eddi T\u1ed1t h\u01a1n<\/h2>\n

S\u1ebd l\u00e0 kh\u00f4ng trung th\u1ef1c n\u1ebfu tr\u00ecnh b\u00e0y b\u1ed9 l\u1ecdc t\u00edch h\u1ee3p l\u00e0 v\u01b0\u1ee3t tr\u1ed9i m\u1ed9t c\u00e1ch ph\u1ed5 qu\u00e1t. SCR th\u00f4ng th\u01b0\u1eddng v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n trong m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng:<\/p>\n