{"id":384,"date":"2020-09-16T15:10:04","date_gmt":"2020-09-16T08:10:04","guid":{"rendered":"https:\/\/sqvina.com\/?p=384"},"modified":"2020-09-17T10:29:30","modified_gmt":"2020-09-17T03:29:30","slug":"cac-cong-nghe-duc-pho-bien","status":"publish","type":"post","link":"https:\/\/sunqueenvina.com.vn\/?p=384","title":{"rendered":"C\u00e1c c\u00f4ng ngh\u1ec7 \u0111\u00fac ph\u1ed5 bi\u1ebfn"},"content":{"rendered":"\n

<\/p>\n\n\n\n

1. C\u00f4ng ngh\u1ec7 h\u1ed9p n\u00f3ng<\/strong><\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 lo\u1ea1i c\u00f4ng ngh\u1ec7 \u0111\u00e3 c\u00f3 l\u00e2u \u0111\u1eddi d\u00f9ng l\u00e0m l\u00f5i h\u00e0ng lo\u1ea1t. G\u1ed3m c\u00f3<\/p>\n\n\n\n

1.1<\/strong>     <\/strong>Hotbox<\/strong><\/strong><\/p>\n\n\n\n

Ch\u1ea5t k\u1ebft d\u00ednh l\u1ecfng d\u1ea1ng polyme g\u1ed1c phenol, ure v\u1edbi formaldehyde, ho\u00e0 tan trong n\u01b0\u1edbc v\u00e0 furfuyrlalcohol.<\/p>\n\n\n\n

Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng l\u00e0 m\u1ed9t dung d\u1ecbch mu\u1ed1i; th\u00ed d\u1ee5: ammoniunitrat.<\/p>\n\n\n\n

H\u1ed7n h\u1ee3p c\u00e1t Hotbox s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ed9p n\u00f3ng 2300<\/sup>C \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n

1.2<\/strong>     <\/strong>Warmbox<\/strong><\/strong><\/p>\n\n\n\n

D\u1ea1ng polyme g\u1ed1c m\u00ea v\u1edbi formaldehyde ho\u00e0 tan trong n\u01b0\u1edbc v\u00e0 furfurylalcohol.<\/p>\n\n\n\n

Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng l\u00e0 m\u1ed9t lo\u1ea1i axit \u0111\u1eb7c bi\u1ec7t (axit sulfuric ho\u1eb7c sulfon axit).<\/p>\n\n\n\n

H\u1ed7n h\u1ee3p c\u00e1t Warmbox s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ed9p n\u00f3ng 1800<\/sup>C \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n

Hai nh\u01b0\u1ee3c \u0111i\u1ec3m l\u1edbn c\u1ee7a Hotbox v\u00e0 Warboxx l\u00e0 t\u1ed1n k\u00e9m n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng l\u00f5i v\u00e0 sau l\u00e0 v\u1ea5n \u0111\u1ec1 m\u00f4i tr\u01b0\u1eddng: khi l\u00e0m l\u00f5i v\u00ec c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00ean c\u00e1c lo\u1ea1i kh\u00ed \u0111\u1ed9c s\u1ebd tho\u00e1t ra nh\u1ea5t l\u00e0 formaldehyde. Hi\u1ec7n nay, 2 c\u00f4ng ngh\u1ec7 n\u00e0y ch\u1ec9 c\u00f2n \u1ee9ng d\u1ee5ng kho\u1ea3ng 7% t\u1ea1i \u0110\u1ee9c.<\/p>\n\n\n\n

1.3<\/strong>     <\/strong>Shellmoulding: C\u00f4ng ngh\u1ec7 Croning<\/strong><\/strong><\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 Croning do ph\u00e1t minh c\u1ee7a C\u00f4ng ty Johannes Croning & CO., Hamburg \u2013 Altona, \u0110\u1ee9c.<\/p>\n\n\n\n

Shellmoulding hay Croning c\u00f9ng thu\u1ed9c lo\u1ea1i c\u00f4ng ngh\u1ec7 h\u1ed9p n\u00f3ng nh\u01b0 Hotbox v\u00ec l\u00f5i ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o l\u00e0m v\u1edbi nhi\u1ec7t \u0111\u1ed9 t\u1eeb 2000<\/sup>C \u2013 2300<\/sup>C.<\/p>\n\n\n\n

Kh\u00e1c v\u1edbi Hotbox, ch\u1ea5t k\u1ebft d\u00ednh Croning c\u00f3 d\u1ea1ng b\u1ed9t. \u0110\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i b\u1ed9t novolac g\u1ed1c phenol\/ formaldehyde. \u0110\u1ed9 ch\u1ea3y c\u1ee7a lo\u1ea1i b\u1ed9t n\u00e0y t\u1eeb 60 \u2013 1000<\/sup>C.<\/p>\n\n\n\n

C\u00e1t nh\u1ef1a<\/em><\/strong><\/em><\/p>\n\n\n\n

B\u1ed9t novalac (2 \u2013 5%) tr\u1ed9n v\u1edbi c\u00e1t silica \u1edf nhi\u1ec7t \u0111\u1ed9 1200<\/sup>C. Nhi\u1ec7t \u0111\u1ed9 sau \u0111\u00f3 gi\u1ea3m xu\u1ed1ng 1000<\/sup>C.<\/p>\n\n\n\n

Sau \u0111\u00f3 cho th\u00eam v\u00e0o 12% dung d\u1ecbch hexa (35% trong n\u01b0\u1edbc) v\u00e0 tr\u1ed9n cho \u0111\u1ec1u. Cu\u1ed1i c\u00f9ng cho 0,2% calciumstearat v\u00e0o tr\u1ed9n. Calciumstearat s\u1ebd l\u00e0m vi\u1ec7c l\u1ea5y l\u00f5i ra kh\u1ecfi khu\u00f4n d\u1ec5 d\u00e0ng.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 c\u00e1t nh\u1ef1a (shellmoulding, croning) v\u00ec s\u1eed d\u1ee5ng h\u1ed9p n\u00f3ng, t\u1ed1n k\u00e9m n\u0103ng l\u01b0\u1ee3ng, d\u1ee5ng c\u1ee5 l\u00e0m khu\u00f4n cho l\u00f5i ph\u1ea3i b\u1eb1ng kim lo\u1ea1i ch\u1ecbu nhi\u1ec7t v\u00e0 h\u01a1n n\u1eefa l\u00e0 \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng t\u1ed1t cho m\u00f4i tr\u01b0\u1eddng n\u00ean hi\u1ec7n nay ch\u1ec9 c\u00f2n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng kho\u1ea3ng 5% \u0111\u1ec3 l\u00e0m l\u00f5i.<\/p>\n\n\n\n

2. C\u00f4ng ngh\u1ec7 t\u1ef1 \u0111\u00f4ng c\u1ee9ng: no bake \u2013 process<\/strong><\/p>\n\n\n\n

Kh\u00e1c v\u1edbi c\u00e1c CN h\u1ed9p n\u00f3ng (ph\u1ea3i d\u00f9ng nhi\u1ec7t) v\u00e0 c\u00f3 h\u1ed9p ngu\u1ed9i (ph\u1ea3i d\u00f9ng kh\u00ed \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng h\u1ed7n h\u1ee3p c\u00e1t), CN t\u1ef1 \u0111\u1ed9ng c\u1ee9ng hay c\u00f2n g\u1ecdi l\u00e0 No Bake ch\u1ec9 c\u1ea7n m\u1ed9t ch\u1ea5t \u0111\u00f4ng c\u1ee9ng (hardener) ho\u1eb7c m\u1ed9t ch\u1ea5t x\u00fac t\u00e1c (catalyst) ho\u1eb7c c\u1ea3 hai, \u1edf d\u1ea1ng l\u1ecfng \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng h\u1ed7n h\u1ee3p.<\/p>\n\n\n\n

Nh\u1eefng c\u00f4ng ngh\u1ec7 t\u1ef1 \u0111\u00f4ng c\u1ee9ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng l\u00e0m khu\u00f4n, l\u00f5i l\u1edbn, \u0111\u01a1n chi\u1ebfc, th\u1ee7 c\u00f4ng, \u0111\u1ec3 \u0111\u00fac gang, th\u00e9p.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 t\u1ef1 \u0111\u00f4ng c\u1ee9ng quan tr\u1ecdng nh\u1ea5t hi\u1ec7n nay tr\u00ean th\u1ebf gi\u1edbi s\u1ebd \u0111\u01b0\u1ee3c n\u00eau d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n\n

2.1 Nh\u1ef1a furan (furan No Bake, FNB)<\/strong><\/strong><\/p>\n\n\n\n

Trong c\u00e1c c\u00f4ng ngh\u1ec7 t\u1ef1 \u0111\u00f4ng c\u1ee9ng, nh\u1ef1a furan \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng nh\u1ea5t hi\u1ec7n nay tr\u00ean th\u1ebf gi\u1edbi d\u00f9ng l\u00e0m khu\u00f4n v\u00e0 l\u00f5i \u0111\u1ec3 \u0111\u00fac c\u00e1c ph\u00f4i gang, gang c\u1ea7u, th\u00e9p c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng t\u1eeb 100 kg \u0111\u1ebfn tr\u00ean 100T.<\/p>\n\n\n\n

Nh\u1ef1a furan (furan resin) l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t polyme t\u1eeb furfurylalcohoi, ure, n\u01b0\u1edbc v\u00e0 formaldehyde v\u1edbi th\u00e0nh ph\u1ea7n nh\u01b0 sau (c\u00f4ng th\u1ee9c c\u1ee7a c\u00f4ng ty Huettenes \u2013 Albertus Germany):<\/p>\n\n\n\n

75% Furfulylalcohol<\/p>\n\n\n\n

11% Fonnaldehyde<\/p>\n\n\n\n

9% Ur\u00ea<\/p>\n\n\n\n

5% n\u01b0\u1edbc<\/p>\n\n\n\n

T\u1ec9 l\u1ec7 gi\u1eefa 2 th\u00e0nh ph\u1ea7n formaldehyde v\u00e0 ur\u00ea s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian \u0111\u00f4ng c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a h\u1ed7n h\u1ee3p furan. Th\u00e0nh ph\u1ea7n furfurylalcohol s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t ch\u1ecbu nhi\u1ec7t c\u1ee7a h\u1ed7n h\u1ee3p. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao, khi \u0111\u00fac th\u00e9p th\u00e0nh ph\u1ea7n FA nhi\u1ec1u khi ph\u1ea3i l\u00ean \u0111\u1ebfn 90% v\u00e0 nit\u01a1 kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 1%. Nhi\u1ec1u nit\u01a1 s\u1ebd g\u00e2y r\u1ed7 khi \u0111\u00fac th\u00e9p. \u0110\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng ph\u00f4i \u0111\u00fac th\u00e9p b\u1ecb r\u1ed7 kh\u00ed n\u00ean:<\/p>\n\n\n\n

– Gi\u1ea3m t\u1ed1i \u0111a th\u00e0nh ph\u1ea7n nit\u01a1 trong nh\u1ef1a furan<\/p>\n\n\n\n

– T\u0103ng nhi\u1ec7t \u0111\u1ed9 r\u00f3t l\u00ean kho\u1ea3ng (30 \u2013 500<\/sup>C).<\/p>\n\n\n\n

S\u1eed d\u1ee5ng ch\u1ea5t s\u01a1n kh\u00f4ng t\u1ed1t (c\u00f3 ch\u1ee9a Zircon)<\/p>\n\n\n\n

Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng (hardener): l\u00e0 m\u1ed9t lo\u1ea1i axit ho\u1eb7c h\u1ee3p ch\u1ea5t axit m\u1ea1nh \u0111\u00f4ng c\u1ee9ng theo ph\u1ea3n \u1ee9ng sau:<\/p>\n\n\n\n

Nh\u1ef1a furen (l\u1ecfng) + ch\u1ea5t \u0111\u00f4ng c\u1ee9ng \u2192 nh\u1ef1a \u0111\u00f4ng c\u1ee9ng + nhi\u1ec7t + n\u01b0\u1edbc<\/p>\n\n\n\n

Tu\u1ef3 theo \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft, kh\u00ed h\u1eadu \u0111\u1ed9 \u1ea9m cao\u2026 c\u1ea7n c\u00f3 nhi\u1ec1u ch\u1ea5t \u0111\u00f4ng c\u1ee9ng kh\u00e1c nhau \u0111\u1ec3 th\u00edch h\u1ee3p v\u1edbi th\u1eddi gian l\u00e0m vi\u1ec7c (tu\u1ed5i xu\u00e2n) c\u1ee7a h\u1ed7n h\u1ee3p c\u00e1t.<\/p>\n\n\n\n

Nh\u1eefng \u01b0u \u0111i\u1ec3m khi s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 furan:<\/p>\n\n\n\n

– \u0110\u00fac c\u00e1c ph\u00f4i gang, gang c\u1ea7u, th\u00e9p\u2026 tr\u00ean 200T.<\/p>\n\n\n\n

– Ch\u1ea5t l\u01b0\u1ee3ng ph\u00f4i r\u1ea5t t\u1ed1t, \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p>\n\n\n\n

– \u0110\u1ed9 h\u1ecfng \u00edt.<\/p>\n\n\n\n

– C\u00e1t t\u00e1i sinh 100% (l\u1ee3i kinh t\u1ebf, m\u00f4i tr\u01b0\u1eddng)<\/p>\n\n\n\n

– Kh\u00f4ng c\u1ea7n nhi\u1ec7t \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng khu\u00f4n v\u00e0 l\u00f5i.<\/p>\n\n\n\n

2.2 C\u00f4ng ngh\u1ec7 Phenol Resin + hardener (axit): khi thay Phenol cho FA<\/strong><\/strong><\/p>\n\n\n\n

Ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, kh\u00f4ng l\u00e0m h\u1ea1i m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n

2.3 C\u00f4ng ngh\u1ec7 Pepset: Pholyurethane<\/strong><\/strong><\/p>\n\n\n\n

Ch\u1ea5t k\u1ebft d\u00ednh h\u1eefu c\u01a1 g\u1ed3m 3 th\u00e0nh ph\u1ea7n:<\/p>\n\n\n\n

– Polyol (t\u00ean ho\u00e1 h\u1ecdc: polybenzylic ether phenol) l\u00e0 m\u1ed9t lo\u1ea1i polyme v\u1edbi phenol v\u00e0 formaldehyde + dung m\u00f4i.<\/p>\n\n\n\n

– Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng g\u1ed1c urethane (lolyisocyanate) + dung m\u00f4i.<\/p>\n\n\n\n

– Ch\u1ea5t x\u00fac t\u00e1c g\u1ed1c pyrindin (axit quan): l\u00e0m t\u0103ng nhanh t\u1ed1c \u0111\u1ed9 \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf t\u1ea1o h\u1ed7n h\u1ee3p Pepset: Th\u00ed d\u1ee5 c\u1ee7a C\u00f4ng ty Huettenes \u2013 Albertus Germany):<\/p>\n\n\n\n

Tr\u1ed9n s\u1eb5n 5% ch\u1ea5t x\u00fac t\u00e1c \u2013 pyridin v\u00e0o v\u1edbi ch\u1ea5t k\u1ebft d\u00ednh (1)<\/p>\n\n\n\n

– C\u00e2n 100 kg c\u00e1t silica<\/p>\n\n\n\n

– C\u00e2n 600 kg ch\u1ea5t k\u1ebft d\u00ednh \u0111\u00e3 c\u00f3 s\u1eb5n pyridin<\/p>\n\n\n\n

– C\u00e2n ch\u1ea5t \u0111\u00f4ng c\u1ee9ng (2)<\/p>\n\n\n\n

Tr\u1ed9n trong v\u00f2ng 60 gi\u00e2y.<\/p>\n\n\n\n

Nh\u01b0 th\u1ebf \u0111\u00e3 c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t h\u1ed7n h\u1ee3p pepset, sau \u0111\u00f3 s\u1ebd t\u00ednh th\u1eddi gian l\u00e0m vi\u1ec7c (tu\u1ed5i xu\u00e2n), th\u1eddi gian r\u00f3t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a h\u1ed7n h\u1ee3p sau 2h, 4h, 24h.<\/p>\n\n\n\n

Benzylether       Polyole             +          Polyisocyanate \u2192 (polyaddtion) polyurethane<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 Pepset (Polyurethane) d\u00f9ng l\u00e0m khu\u00f4n v\u00e0 l\u00f5i \u0111\u01a1n chi\u1ebfc \u0111\u1ec3 \u0111\u00fac h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i kim lo\u1ea1i: gang, th\u00e9p, nh\u00f4m.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m: \u00edt b\u1ea9n, \u00edt formlaldehyde, \u0111\u1ed9 ph\u00e1 khu\u00f4n t\u1ed1t.<\/p>\n\n\n\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m: \u0111\u1ed9c h\u1ea1i (isocyanate), ch\u1ea5t \u0111\u00f4ng c\u1ee9ng \u0111\u1eaft, tu\u1ed5i xu\u00e2n ng\u1eafn.<\/p>\n\n\n\n

2.4 C\u00f4ng ngh\u1ec7 Alphaset: Phenol Resol \u2013 Ester<\/em><\/strong><\/strong><\/p>\n\n\n\n

Ch\u1ea5t k\u1ebft d\u00ednh Alphaset d\u1ea1ng l\u1ecfng l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t polyme gi\u1eefa phenol v\u00e0 formaldehyde.<\/p>\n\n\n\n

Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng (hardener) l\u00e0 m\u1ed9t ester (Triacetin).<\/p>\n\n\n\n

Alphaset \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u0111\u1ec3 l\u00e0m khu\u00f4n v\u00e0 l\u00f5i l\u1ed1i th\u1ee7 c\u00f4ng \u0111\u1ec3 \u0111\u00fac gang, th\u00e9p.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m: kh\u00f4ng m\u00f9i (t\u1ed1t cho m\u00f4i tr\u01b0\u1eddng). Ch\u1ea5t l\u01b0\u1ee3ng ph\u00f4i t\u1ed1t, b\u1ec1 m\u1eb7t l\u00e1ng.<\/p>\n\n\n\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m: C\u00e1t t\u00e1i sinh kh\u00f4ng d\u1ec5 nh\u01b0 c\u1ee7a c\u00e1t furan. Ch\u1ea5t l\u01b0\u1ee3ng t\u00e1i sinh kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed1t. Tu\u1ed5i th\u1ecd ch\u1ea5t k\u1ebft d\u00ednh (ph\u1ea7n I) ng\u1eafn.<\/p>\n\n\n\n

2.5 C\u00f4ng ngh\u1ec7 n\u01b0\u1edbc thu\u1ef7 tinh = Ester<\/em><\/strong><\/strong><\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 n\u01b0\u1edbc thu\u1ef7 tinh \u0111\u00e3 c\u00f3 t\u1eeb r\u1ea5t l\u00e2u. Hi\u1ec7n nay c\u00f4ng ngh\u1ec7 n\u00e0y v\u1eabn c\u00f2n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m khu\u00f4n v\u00e0 l\u00f5i nhi\u1ec1u n\u01a1i tr\u00ean th\u1ebf gi\u1edbi, trong \u0111\u00f3 c\u00f3 Vi\u1ec7t Nam.<\/p>\n\n\n\n

Nh\u1eefng khu\u00f4n, l\u00f5i nh\u1ecf \u0111\u01b0\u1ee3c \u0111\u00f4ng c\u1ee9ng v\u1edbi kh\u00ed CO2. Nh\u1eefng khu\u00f4n, l\u00f5i l\u1edbn \u0111\u01b0\u1ee3c \u0111\u00f4ng c\u1ee9ng v\u1edbi Ester (d\u1ea1ng l\u1ecfng).<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m: T\u1ed1t cho m\u00f4i tr\u01b0\u1eddng (kh\u00f4ng m\u00f9i). Kinh t\u1ebf (r\u1ebb).<\/p>\n\n\n\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m: Ch\u1ea5t l\u01b0\u1ee3ng ph\u00f4i k\u00e9m (kh\u00f4ng ch\u00ednh x\u00e1c, b\u1ec1 m\u1eb7t ph\u00f4i kh\u00f4ng l\u00e1ng). \u0110\u1ed9 ph\u00e1 khu\u00f4n (\u0111\u1ed9 t\u01a1i) d\u1ee1. C\u00e1t kh\u00f4ng t\u00e1i sinh \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

C\u00f4ng ty Hueuenes Albertus Gennany c\u00f3 lo\u1ea1i ph\u1ee5 gia t\u00ean Rawo PHF tr\u1ed9n th\u00eam v\u00e0o h\u1ed7n h\u1ee3p c\u00e1t n\u01b0\u1edbc thu\u1ef7 tinh \u0111\u1ec3 t\u0103ng \u0111\u1ed9 ph\u00e1 khu\u00f4n (\u0111\u1ed9 t\u01a1i).<\/p>\n\n\n\n

3. C\u00f4ng ngh\u1ec7 h\u1ed9p ngu\u1ed9i: Cold box<\/strong><\/p>\n\n\n\n

Nh\u01b0 \u0111\u00e3 tr\u00ecnh b\u00e0y \u1edf tr\u00ean, nh\u1eefng c\u00f4ng ngh\u1ec7 h\u1ed9p n\u00f3ng d\u00f9ng l\u00e0m khu\u00f4n, l\u00f5i khi \u0111\u00fac h\u00e0ng lo\u1ea1t r\u1ea5t t\u1ed1n k\u00e9m n\u0103ng l\u01b0\u1ee3ng v\u00e0 g\u00e2y \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng. Nh\u1eefng c\u00f4ng ngh\u1ec7 t\u1ef1 \u0111\u00f4ng c\u1ee9ng th\u01b0\u1eddng d\u00f9ng l\u00e0m khu\u00f4n khi \u0111\u00fac c\u00e1c chi ti\u1ebft l\u1edbn, \u0111\u01a1n chi\u1ebfc. Lo\u1ea1i c\u00f4ng ngh\u1ec7 th\u1ee9 ba v\u00e0 c\u0169ng l\u00e0 lo\u1ea1i c\u00f4ng ngh\u1ec7 quan tr\u1ecdng nh\u1ea5t hi\u1ec7n nay d\u00f9ng cho c\u00e1c x\u01b0\u1edfng \u0111\u00fac h\u00e0ng lo\u1ea1t c\u00e1c b\u1ed9 ph\u1eadn \u00f4 t\u00f4 c\u00f3 t\u00ean l\u00e0 cold box (CN h\u1ed9p ngu\u1ed9i).<\/p>\n\n\n\n

Kh\u00e1c v\u1edbi CN h\u1ed9p n\u00f3ng d\u00f9ng nhi\u1ec1u CN t\u1ef1 \u0111\u00f4ng c\u1ee9ng (d\u00f9ng axit hay ester), CN Cold box d\u00f9ng kh\u00ed \u0111\u1ec3 \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n

C\u00f3 t\u1ea5t c\u1ea3 5 lo\u1ea1i Cold box quan tr\u1ecdng. Tu\u1ef3 theo lo\u1ea1i kh\u00ed \u0111\u00f4ng c\u1ee9ng m\u00e0 ch\u00fang c\u00f3 c\u00e1c lo\u1ea1i t\u00ean kh\u00e1c nhau sau \u0111\u00e2y:<\/p>\n\n\n\n

3.1 C\u00f4ng ngh\u1ec7 n\u01b0\u1edbc thu\u1ef7 tinh CO2<\/strong><\/strong><\/p>\n\n\n\n

\u0110\u00f4ng c\u1ee9ng theo c\u00f4ng th\u1ee9c: Na2SiO2 \u2192 Na2CO3<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u1ec3 l\u00e0m c\u00e1c lo\u1ea1i l\u00f5i nh\u1ecf h\u00e0ng lo\u1ea1t, r\u1ebb v\u00e0 t\u1ed1t cho m\u00f4i tr\u01b0\u1eddng \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u t\u1ea1i Vi\u1ec7t Nam.<\/p>\n\n\n\n

Ng\u01b0\u1ee3c l\u1ea1i c\u00f4ng ngh\u1ec7 n\u00e0y c\u00f3 qu\u00e1 nhi\u1ec1u nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/p>\n\n\n\n

– \u0110\u1ed9 b\u1ec1n h\u1ed7n h\u1ee3p r\u1ea5t th\u1ea5p<\/p>\n\n\n\n

– Ch\u1ea5t l\u01b0\u1ee3ng ph\u00f4i k\u00e9m<\/p>\n\n\n\n

– R\u1ea5t kh\u00f3 ph\u00e1 khu\u00f4n (\u0111\u1ed9 t\u01a1i k\u00e9m)<\/p>\n\n\n\n

– C\u00e1t kh\u00f4ng t\u00e1i sinh<\/p>\n\n\n\n

– Kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng s\u01a1n khu\u00f4n d\u1ea1ng n\u01b0\u1edbc.<\/p>\n\n\n\n

– Ch\u00f3ng h\u01b0.<\/p>\n\n\n\n

3.2 C\u1ed1ang ngh\u1ec7 Cold box \u2013 Methylformiat<\/strong><\/strong><\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 Methylformiat c\u00f2n c\u00f3 t\u00ean l\u00e0 Beta set.<\/p>\n\n\n\n

Kh\u00e1c v\u1edbi n\u01b0\u1edbc thu\u1ef7 tinh c\u00f3 g\u1ed1c v\u00f4 c\u01a1, beta set l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t polyme g\u1ed1c phenol v\u1edbi \u0111\u1ed9 Pa = 14.4<\/p>\n\n\n\n

Beta set g\u1ed3m 2 th\u00e0nh ph\u1ea7n: phenol resol v\u00e0 kh\u00ed methylformiat.<\/p>\n\n\n\n

S\u1ef1 \u0111\u00f4ng c\u1ee9ng h\u1ed7n h\u1ee3p d\u1ef1a tr\u00ean vi\u1ec7c gi\u1ea3m \u0111\u1ed9 Pa c\u1ee7a phenol resol.<\/p>\n\n\n\n

Th\u00ed d\u1ee5: cho 100 kg h\u1ed7n h\u1ee3p Beta set: 100 kg c\u00e1t, 2 kg phenol resol, 400 g methylformiat.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 Beta s\u00e9t r\u1ea5t t\u1ed1t cho m\u00f4i tr\u01b0\u1eddng, kh\u00f4ng m\u00f9i, \u0111\u1ed9 b\u1ec1n h\u1ed7n h\u1ee3p cao h\u01a1n c\u1ee7a CN n\u01b0\u1edbc thu\u1ef7 tinh v\u00e0 c\u00f3 th\u1ec3 d\u00f9ng s\u01a1n khu\u00f4n d\u1ea1ng n\u01b0\u1edbc.<\/p>\n\n\n\n

Nh\u01b0ng \u0111\u1ed9 b\u1ec1n c\u1ee7a h\u1ed7n h\u1ee3p beta set c\u0169ng kh\u00f4ng th\u1ec3 so s\u00e1nh \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c CN SO2 ho\u1eb7c Pu Cold box, n\u00ean hi\u1ec7n nay Beta r\u1ea5t \u00edt \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng t\u1ea1i \u0110\u1ee9c.<\/p>\n\n\n\n

3.3 C\u00f4ng ngh\u1ec7 Phenol Resol\/ CO2<\/strong><\/strong><\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 Phenol Resol\/ CO2 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u00e0o nh\u1eefng 1990 nh\u01b0 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn cho CN n\u01b0\u1edbc thu\u1ef7 tinh v\u00ec \u0111\u1ed9 b\u1ec1n cao h\u01a1n NTT.<\/p>\n\n\n\n

T\u01b0\u01a1ng t\u1ef1 nh\u01b0 Cold box M, ch\u1ea5t k\u1ebft d\u00ednh c\u0169ng l\u00e0 m\u1ed9t polyme g\u1ed1c phenol.<\/p>\n\n\n\n

T\u1ec9 l\u1ec7 tr\u1ed9n h\u1ed7n h\u1ee3p c\u0169ng l\u00e0 t\u1eeb 2% \u0111\u1ebfn 3,5% v\u1edbi c\u00e1t.<\/p>\n\n\n\n

Kh\u00e1c v\u1edbi Cold box M, CN n\u00e0y d\u00f9ng kh\u00ed CO2 \u0111\u1ec3 \u0111\u00f4ng c\u1ee9ng.<\/p>\n\n\n\n

Hi\u1ec7n nay CN n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng kho\u1ea3ng 6% \u0111\u1ec3 l\u00e0m l\u00f5i t\u1ea1i \u0110\u1ee9c.<\/p>\n\n\n\n

3.4 C\u00f4ng ngh\u1ec7 \u0111\u00f4ng c\u1ee9ng v\u1edbi SO2<\/strong><\/strong><\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 n\u00e0y g\u1ed3m 3 th\u00e0nh ph\u1ea7n:<\/p>\n\n\n\n

1- Ch\u1ea5t k\u1ebft d\u00ednh: g\u1ed1c nh\u1ef1a furan ho\u1eb7c nh\u1ef1a epoxy.<\/p>\n\n\n\n

2- Ch\u1ea5t t\u1ea1o oxy ho\u00e1 \u201cPeroxid\u201d<\/p>\n\n\n\n

3- Kh\u00ed CO2 l\u00e0m \u0111\u00f4ng c\u1ee9ng<\/p>\n\n\n\n

Tr\u1ed9n ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 peroxid v\u00e0o v\u1edbi c\u00e1t. Kh\u00ed CO2 s\u1ebd t\u00e1c \u0111\u1ed9ng v\u1edbi peroxid v\u00e0 n\u01b0\u1edbc \u0111\u1ec3 cho ra axit sunphuric v\u00e0 l\u00e0m c\u1ee9ng h\u1ed7n h\u1ee3p c\u00e1t.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 SO2 c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m sau:<\/p>\n\n\n\n

– L\u00f5i \u0111\u01b0\u1ee3c l\u00e0m r\u1ea5t nhanh<\/p>\n\n\n\n

– \u0110\u1ed9 b\u1ec1n l\u00f5i r\u1ea5t cao<\/p>\n\n\n\n

– L\u00f5i \u0111\u01b0\u1ee3c gi\u1eef r\u1ea5t l\u00e2u<\/p>\n\n\n\n

– L\u00f5i kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi \u0111\u1ed9 \u1ea9m<\/p>\n\n\n\n

– Ch\u1ea5t l\u01b0\u1ee3ng ph\u00f4i r\u1ea5t t\u1ed1t.<\/p>\n\n\n\n

– \u0110\u1ed9 t\u01a1i t\u1ed1t khi \u0111\u00fac nh\u00f4m<\/p>\n\n\n\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a CN n\u00e0y l\u00e0 v\u1ea5n \u0111\u1ec1 m\u00f4i tr\u01b0\u1eddng do kh\u00ed SO2 v\u00e0 hay l\u00e0m b\u1ea9n c\u00e1c khu\u00f4n l\u00e0m l\u00f5i n\u00ean hi\u1ec7n nay ch\u1ec9 c\u00f2n 2 x\u01b0\u1edfng \u0111\u00fac t\u1ea1i \u0110\u1ee9c \u00e1p d\u1ee5ng CN \u0111\u1ec3 \u0111\u00fac c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n

3.5 C\u00f4ng ngh\u1ec7 PUCB: Polyurethan Cold box<\/strong><\/strong><\/p>\n\n\n\n

PUCB l\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhi\u1ec1u nh\u1ea5t hi\u1ec7n nay tr\u00ean th\u1ebf gi\u1edbi l\u00e0m l\u00f5i \u0111\u00fac h\u00e0ng lo\u1ea1t c\u00e1c lo\u1ea1i ph\u00f4i gang, gang c\u1ea7u th\u00e9p, nh\u00f4m v\u00e0 c\u00e1c h\u1ee3p kim kh\u00e1c cho ng\u00e0nh \u00f4 t\u00f4. C\u00f4ng ty Eisenwerk Bruehl t\u1ea1i \u0110\u1ee9c \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u1ec3 \u0111\u00fac 15 ng\u00e0n block m\u00e1y trong v\u00f2ng 1 ng\u00e0y v\u1edbi s\u1ea3n l\u01b0\u1ee3ng l\u00e0 1000 t\/ ph\u00f4i\/ ng\u00e0y.<\/p>\n\n\n\n

Ng\u00e0y nay 75% c\u00e1c lo\u1ea1i l\u00f5i d\u00f9ng \u0111\u1ec3 \u0111\u00fac h\u00e0ng lo\u1ea1t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng CN PUCB.<\/p>\n\n\n\n

PUCB g\u1ed3m 3 th\u00e0nh ph\u1ea7n:<\/p>\n\n\n\n

– Polyol (Polybenzylic Ether Phenol)<\/p>\n\n\n\n

– Polyisocyanat<\/p>\n\n\n\n

– Kh\u00ed quan (TEA, DMEA\u2026)<\/p>\n\n\n\n

Th\u00ed d\u1ee5 l\u00e0m 100 kg h\u1ed7n h\u1ee3p PUCB c\u1ee7a C\u00f4ng ty Huettenes Albertus Germany:<\/p>\n\n\n\n

C\u00e2n: 100 kg c\u00e1t silica<\/p>\n\n\n\n

600 g Gasharz 5366 (Polyol + dung m\u00f4i) = 0,6%<\/p>\n\n\n\n

600 g Am 5333 (lsocyanat + dung m\u00f4i) = 0,6%<\/p>\n\n\n\n

H\u1ed7n h\u1ee3p c\u00e1t \u0111\u01b0\u1ee3c tr\u1ed9n 1 ph\u00fat, sau \u0111\u00f3 cho v\u00e0o m\u00e1y l\u00e0m l\u00f5i. D\u00f9ng \u00e1p su\u1ea5t \u0111\u1ec3 \u0111\u1ea9y h\u1ed7n h\u1ee3p c\u00e1t v\u00e0o khu\u00f4n l\u00e0m l\u00f5i. Kh\u00ed quan s\u1ebd \u0111\u01b0\u1ee3c b\u01a1m v\u00e0o \u0111\u1ec3 l\u00e0m \u0111\u00f4ng c\u1ee9ng l\u00f5i.<\/p>\n\n\n\n

L\u00f5i sau khi l\u00e0m xong c\u00f3 \u0111\u1ed9 b\u1ec1n r\u1ea5t cao v\u00e0 c\u00f3 th\u1ec3 \u0111\u00fac ngay.<\/p>\n\n\n\n

D\u00f9ng c\u00f4ng ngh\u1ec7 PUCB \u0111\u1ec3 c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c nh\u1eefng lo\u1ea1i l\u00f5i kh\u00f3 nh\u1ea5t, c\u00f3 th\u00e0nh m\u1ecfng nh\u1ea5t m\u00e0 kh\u00f4ng s\u1ee3 b\u1ecb g\u00e3y ho\u1eb7c v\u1ee1. L\u00f5i sau khi l\u00e0m xong c\u00f3 th\u1ec3 \u0111\u1ec3 h\u00e0ng tu\u1ea7n m\u00e0 kh\u00f4ng s\u1ee3 gi\u1ea3m m\u1ea5t \u0111\u1ed9 b\u1ec1n c\u0169ng nh\u01b0 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi kh\u00ed h\u1eadu, \u0111\u1ed9 \u1ea9m.<\/p>\n\n\n\n

Huettenes Albertus Dusseldorf (Germany) l\u00e0 c\u00f4ng ty ho\u00e1 ch\u1ea5t ng\u00e0nh \u0111\u00fac h\u00e0ng \u0111\u1ea7u th\u1ebf gi\u1edbi hi\u1ec7n nay trong vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i PUCB.<\/p>\n\n\n\n

V\u1ea5n \u0111\u1ec1 m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c HA \u0111\u01b0a l\u00ean h\u00e0ng \u0111\u1ea7u \u0111\u1ec3 gi\u1ea3m t\u1ea5t c\u1ea3 c\u00e1c ch\u1ea5t \u0111\u1ed9c h\u1ea1i nh\u01b0 phenol, formaldehyde trong c\u00e1c lo\u1ea1i PUCB hi\u1ec7n nay. C\u00e1c dung m\u00f4i g\u1ed1c d\u1ea7u ho\u1ea3 c\u0169ng \u0111\u01b0\u1ee3c thay th\u1ebf b\u1edfi c\u00e1c lo\u1ea1i d\u1ea7u th\u1ef1c v\u1eadt nh\u01b0 B\u00e9o Diesel v\u00e0 nh\u1eefng s\u1ea3n ph\u1ea9m m\u1edbi nh\u1ea5t hi\u1ec7n nay c\u1ee7a HA v\u1edbi TES (Tetraethylsilicat) \u0111\u00e3 lo\u1ea1i b\u1ecf nh\u1eefng m\u00f9i v\u00e0 kh\u00ed kh\u00f3 ch\u1ecbu khi l\u00e0m l\u00f5i c\u0169ng nh\u01b0 sau khi \u0111\u00fac:<\/p>\n\n\n\n

T\u00f3m l\u01b0\u1ee3c:<\/p>\n\n\n\n

Polyol (I) + Polyisocyanat (II) \u2192 polyurethan Cold box<\/p>\n\n\n\n

4. K\u1ebft lu\u1eadn<\/strong><\/p>\n\n\n\n

Tr\u00ean \u0111\u00e2y t\u01b0\u1eddng tr\u00ecnh t\u1ed5ng qu\u00e1t v\u1ec1 c\u00e1c c\u00f4ng ngh\u1ec7 l\u00e0m khu\u00f4n v\u00e0 l\u00f5i quan tr\u1ecdng nh\u1ea5t hi\u1ec7n nay tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n\n\n\n

Tu\u1ef3 theo s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh m\u00e0 c\u00e1c x\u01b0\u1edfng \u0111\u00fac n\u00ean l\u1ef1a ch\u1ecdn c\u00f4ng ngh\u1ec7 l\u00e0m khu\u00f4n v\u00e0 l\u00f5i cho th\u00edch h\u1ee3p (ch\u1ea5t l\u01b0\u1ee3ng, kinh t\u1ebf, m\u00f4i tr\u01b0\u1eddng).<\/p>\n\n\n\n

Khi ch\u1ecdn c\u00f4ng ngh\u1ec7 n\u00ean bi\u1ebft r\u00f5 l\u00e0 c\u00f4ng ngh\u1ec7 cho khu\u00f4n hay cho l\u00f5i hay cho c\u1ea3 hai. N\u00ean bi\u1ebft r\u00f5 c\u00f4ng ngh\u1ec7 n\u00e0o th\u00edch h\u1ee3p khi \u0111\u00fac \u0111\u01a1n chi\u1ebfc, chi ti\u1ebft l\u1edbn ho\u1eb7c CN khi \u0111\u00fac h\u00e0ng lo\u1ea1t, chi ti\u1ebft nh\u1ecf v\u00e0 v\u1eeba. Khi \u0111\u00fac gang x\u00e1m, gang c\u1ea7u, th\u00e9p ph\u1ea3i c\u1ea7n \u0111\u1ebfn c\u00e1c CN l\u00e0m khu\u00f4n v\u00e0 l\u00f5i c\u00f3 s\u1ee9c ch\u1ecbu nhi\u1ec7t cao c\u0169ng nh\u01b0 khi \u0111\u00fac nh\u00f4m ph\u1ea3i c\u1ea7n \u0111\u1ebfn CN l\u00e0m khu\u00f4n v\u00e0 l\u00f5i c\u00f3 \u0111\u1ed9 ph\u00e1 khu\u00f4n (\u0111\u1ed9 t\u01a1i) t\u1ed1t\u2026<\/p>\n\n\n\n

Ngo\u00e0i ra c\u00f2n nh\u1eefng y\u1ebfu t\u1ed1t r\u1ea5t quan tr\u1ecdng kh\u00e1c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng ph\u00f4i:<\/p>\n\n\n\n

1. Chuy\u00ean gia<\/p>\n\n\n\n

2. Nhi\u1ec7t luy\u1ec7n<\/p>\n\n\n\n

3. Ch\u1ea5t s\u01a1n khu\u00f4n<\/p>\n\n\n\n

4. B\u1ed9t ph\u00e1t nhi\u1ec7t (\u0111\u1ed9 ng\u00f3t)<\/p>\n\n\n\n

Y\u1ebfu t\u1ed1 con ng\u01b0\u1eddi v\u1eabn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng nh\u1ea5t. M\u1ed9t x\u01b0\u1edfng \u0111\u00fac, d\u00f9 \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ea7y \u0111\u1ee7 m\u00e1y m\u00f3c, thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i \u0111\u1ec3 \u00e1p d\u1ee5ng c\u00e1c lo\u1ea1i c\u00f4ng ngh\u1ec7 tr\u00ean, nh\u01b0ng n\u1ebfu y\u1ebfu t\u1ed1 con ng\u01b0\u1eddi k\u00e9m, kh\u00f4ng c\u00f3 chuy\u00ean gia v\u00e0 chuy\u00ean vi\u00ean gi\u1ecfi ng\u00e0nh \u0111\u00fac th\u00ec c\u0169ng s\u1ebd d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i nhanh ch\u00f3ng.<\/strong><\/p>\n\n\n\n

(S\u01b0u t\u1ea7m<\/strong>:Internet)<\/p>\n","protected":false},"excerpt":{"rendered":"

1. C\u00f4ng ngh\u1ec7 h\u1ed9p n\u00f3ng \u0110\u00e2y l\u00e0 lo\u1ea1i c\u00f4ng ngh\u1ec7 \u0111\u00e3 c\u00f3 l\u00e2u \u0111\u1eddi d\u00f9ng l\u00e0m l\u00f5i h\u00e0ng lo\u1ea1t. G\u1ed3m c\u00f3 1.1     Hotbox Ch\u1ea5t k\u1ebft d\u00ednh l\u1ecfng d\u1ea1ng polyme g\u1ed1c phenol, ure v\u1edbi formaldehyde, ho\u00e0 tan trong n\u01b0\u1edbc v\u00e0 furfuyrlalcohol. Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng l\u00e0 m\u1ed9t dung d\u1ecbch mu\u1ed1i; th\u00ed d\u1ee5: ammoniunitrat. H\u1ed7n h\u1ee3p c\u00e1t Hotbox s\u1ebd…<\/span><\/p>\n

Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[],"yoast_head":"\nC\u00e1c c\u00f4ng ngh\u1ec7 \u0111\u00fac ph\u1ed5 bi\u1ebfn - SUNQUEEN VINA<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1c c\u00f4ng ngh\u1ec7 \u0111\u00fac ph\u1ed5 bi\u1ebfn - SUNQUEEN VINA\" \/>\n<meta property=\"og:description\" content=\"1. C\u00f4ng ngh\u1ec7 h\u1ed9p n\u00f3ng \u0110\u00e2y l\u00e0 lo\u1ea1i c\u00f4ng ngh\u1ec7 \u0111\u00e3 c\u00f3 l\u00e2u \u0111\u1eddi d\u00f9ng l\u00e0m l\u00f5i h\u00e0ng lo\u1ea1t. G\u1ed3m c\u00f3 1.1     Hotbox Ch\u1ea5t k\u1ebft d\u00ednh l\u1ecfng d\u1ea1ng polyme g\u1ed1c phenol, ure v\u1edbi formaldehyde, ho\u00e0 tan trong n\u01b0\u1edbc v\u00e0 furfuyrlalcohol. Ch\u1ea5t \u0111\u00f4ng c\u1ee9ng l\u00e0 m\u1ed9t dung d\u1ecbch mu\u1ed1i; th\u00ed d\u1ee5: ammoniunitrat. H\u1ed7n h\u1ee3p c\u00e1t Hotbox s\u1ebd…Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sunqueenvina.com.vn\/?p=384\" \/>\n<meta property=\"og:site_name\" content=\"SUNQUEEN VINA\" \/>\n<meta property=\"article:published_time\" content=\"2020-09-16T08:10:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-09-17T03:29:30+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/sunqueenvina.com.vn\/#website\",\"url\":\"https:\/\/sunqueenvina.com.vn\/\",\"name\":\"SUNQUEEN VINA\",\"description\":\"OEM & Marine Equipments\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/sunqueenvina.com.vn\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/sunqueenvina.com.vn\/?p=384#webpage\",\"url\":\"https:\/\/sunqueenvina.com.vn\/?p=384\",\"name\":\"C\\u00e1c c\\u00f4ng ngh\\u1ec7 \\u0111\\u00fac ph\\u1ed5 bi\\u1ebfn - SUNQUEEN VINA\",\"isPartOf\":{\"@id\":\"https:\/\/sunqueenvina.com.vn\/#website\"},\"datePublished\":\"2020-09-16T08:10:04+00:00\",\"dateModified\":\"2020-09-17T03:29:30+00:00\",\"author\":{\"@id\":\"https:\/\/sunqueenvina.com.vn\/#\/schema\/person\/535917c9a3a25d35025adedd32b2f40f\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/sunqueenvina.com.vn\/?p=384\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/sunqueenvina.com.vn\/#\/schema\/person\/535917c9a3a25d35025adedd32b2f40f\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/sunqueenvina.com.vn\/#personlogo\",\"inLanguage\":\"vi\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/7677a2410469fb0065e3db1c67b521b2?s=96&d=mm&r=g\",\"caption\":\"admin\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=\/wp\/v2\/posts\/384"}],"collection":[{"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=384"}],"version-history":[{"count":3,"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=\/wp\/v2\/posts\/384\/revisions"}],"predecessor-version":[{"id":416,"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=\/wp\/v2\/posts\/384\/revisions\/416"}],"wp:attachment":[{"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sunqueenvina.com.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}