{"id":21406,"date":"2022-09-19T09:38:23","date_gmt":"2022-09-19T01:38:23","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=21406"},"modified":"2022-09-19T09:39:36","modified_gmt":"2022-09-19T01:39:36","slug":"4-key-points-you-may-need-to-know-about-cryogenic-treatment-process","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/4-key-point-you-can-need-to-know-about-cryogenic-treatment-process\/","title":{"rendered":"4 \u0110i\u1ec3m ch\u00ednh b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n bi\u1ebft v\u1ec1 Quy tr\u00ecnh x\u1eed l\u00fd b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh"},"content":{"rendered":"
X\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh th\u01b0\u1eddng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p l\u00e0m m\u00e1t b\u1eb1ng nit\u01a1 l\u1ecfng, c\u00f3 th\u1ec3 l\u00e0m m\u00e1t ph\u00f4i xu\u1ed1ng d\u01b0\u1edbi -190oC. C\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd thay \u0111\u1ed5i \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. X\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c Li\u00ean X\u00f4 c\u0169 \u0111\u1ec1 xu\u1ea5t v\u00e0o n\u0103m 1939. Ph\u1ea3i \u0111\u1ebfn nh\u1eefng n\u0103m 1960, Hoa K\u1ef3 m\u1edbi \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh v\u00e0o ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu trong l\u0129nh v\u1ef1c h\u00e0ng kh\u00f4ng. V\u00e0o nh\u1eefng n\u0103m 1970, n\u00f3 m\u1edf r\u1ed9ng sang l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t m\u00e1y m\u00f3c.<\/p>\n\n\n\n
Theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p l\u00e0m l\u1ea1nh kh\u00e1c nhau, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p l\u1ecfng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p kh\u00ed. Ph\u01b0\u01a1ng ph\u00e1p l\u1ecfng c\u00f3 ngh\u0129a l\u00e0 v\u1eadt li\u1ec7u ho\u1eb7c ph\u00f4i \u0111\u01b0\u1ee3c nh\u00fang tr\u1ef1c ti\u1ebfp v\u00e0o nit\u01a1 l\u1ecfng \u0111\u1ec3 l\u00e0m ngu\u1ed9i ph\u00f4i \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 nit\u01a1 l\u1ecfng, v\u00e0 ph\u00f4i \u0111\u01b0\u1ee3c gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 n\u00e0y trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a ra ngo\u00e0i v\u00e0 nung n\u00f3ng \u0111\u1ebfn m\u1ed9t nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh. . R\u1ea5t kh\u00f3 \u0111\u1ec3 ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 t\u0103ng v\u00e0 gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 theo c\u00e1ch n\u00e0y, \u0111i\u1ec1u n\u00e0y c\u00f3 t\u00e1c \u0111\u1ed9ng nhi\u1ec7t l\u1edbn \u0111\u1ebfn ph\u00f4i v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c cho l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y h\u01b0 h\u1ecfng cho ph\u00f4i. Thi\u1ebft b\u1ecb \u0111\u00f4ng l\u1ea1nh t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00ecnh nit\u01a1 l\u1ecfng.<\/p>\n\n\n\n
Nguy\u00ean l\u00fd kh\u00ed l\u00e0 l\u00e0m m\u00e1t b\u1eb1ng nhi\u1ec7t \u1ea9n kh\u00ed h\u00f3a c\u1ee7a nit\u01a1 l\u1ecfng (kho\u1ea3ng 199,54kJ\/kg) v\u00e0 s\u1ef1 h\u1ea5p th\u1ee5 nhi\u1ec7t c\u1ee7a nit\u01a1 \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Ph\u01b0\u01a1ng ph\u00e1p kh\u00ed c\u00f3 th\u1ec3 l\u00e0m cho nhi\u1ec7t \u0111\u1ed9 \u0111\u00f4ng l\u1ea1nh \u0111\u1ea1t t\u1edbi - 190oC, do \u0111\u00f3 nit\u01a1 \u0111\u00f4ng l\u1ea1nh c\u00f3 th\u1ec3 ti\u1ebfp x\u00fac v\u1edbi v\u1eadt li\u1ec7u. Th\u00f4ng qua trao \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed1i l\u01b0u, nit\u01a1 c\u00f3 th\u1ec3 bay h\u01a1i trong h\u1ed9p \u0111\u00f4ng l\u1ea1nh sau khi \u0111\u01b0\u1ee3c \u0111\u1ea9y ra kh\u1ecfi v\u00f2i phun. Ph\u00f4i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m m\u00e1t b\u1eb1ng nhi\u1ec7t \u1ea9n c\u1ee7a qu\u00e1 tr\u00ecnh kh\u00ed h\u00f3a v\u00e0 s\u1ef1 h\u1ea5p th\u1ee5 nhi\u1ec7t c\u1ee7a nit\u01a1 \u0111\u00f4ng l\u1ea1nh. B\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t \u0111\u1ea7u v\u00e0o c\u1ee7a nit\u01a1 l\u1ecfng \u0111\u1ec3 ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t, nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh t\u1ef1 \u0111\u1ed9ng v\u00e0 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c, hi\u1ec7u \u1ee9ng s\u1ed1c nhi\u1ec7t nh\u1ecf n\u00ean kh\u1ea3 n\u0103ng b\u1ecb n\u1ee9t c\u0169ng nh\u1ecf.<\/p>\n\n\n\n
Hi\u1ec7n nay, ph\u01b0\u01a1ng ph\u00e1p kh\u00ed \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f4ng nh\u1eadn r\u1ed9ng r\u00e3i trong \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3, v\u00e0 thi\u1ebft b\u1ecb l\u00e0m m\u00e1t c\u1ee7a n\u00f3 ch\u1ee7 y\u1ebfu l\u00e0 h\u1ed9p l\u1ea1nh c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh v\u1edbi nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. X\u1eed l\u00fd b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 tu\u1ed5i th\u1ecd, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a kim lo\u1ea1i \u0111en, kim lo\u1ea1i m\u00e0u, h\u1ee3p kim kim lo\u1ea1i v\u00e0 c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c, mang l\u1ea1i l\u1ee3i \u00edch kinh t\u1ebf \u0111\u00e1ng k\u1ec3 v\u00e0 tri\u1ec3n v\u1ecdng th\u1ecb tr\u01b0\u1eddng.<\/p>\n\n\n\n
C\u00f4ng ngh\u1ec7 \u0111\u00f4ng l\u1ea1nh c\u1ee7a cacbua xi m\u0103ng l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o v\u00e0o nh\u1eefng n\u0103m 1980 v\u00e0 1990. C\u00f4ng ngh\u1ec7 c\u01a1 kh\u00ed<\/em> c\u1ee7a Nh\u1eadt B\u1ea3n n\u0103m 1981 v\u00e0 C\u1eeda h\u00e0ng m\u00e1y hi\u1ec7n \u0111\u1ea1i<\/em> c\u1ee7a Hoa K\u1ef3 v\u00e0o n\u0103m 1992 b\u00e1o c\u00e1o r\u1eb1ng hi\u1ec7u su\u1ea5t c\u1ee7a cacbua xi m\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 sau khi x\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh. T\u1eeb nh\u1eefng n\u0103m 1970, c\u00f4ng vi\u1ec7c nghi\u00ean c\u1ee9u v\u1ec1 x\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh \u1edf n\u01b0\u1edbc ngo\u00e0i \u0111\u00e3 c\u00f3 k\u1ebft qu\u1ea3. Li\u00ean X\u00f4 c\u0169, Hoa K\u1ef3, Nh\u1eadt B\u1ea3n v\u00e0 c\u00e1c n\u01b0\u1edbc kh\u00e1c \u0111\u00e3 s\u1eed d\u1ee5ng th\u00e0nh c\u00f4ng ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd \u0111\u00f4ng l\u1ea1nh \u0111\u1ec3 c\u1ea3i thi\u1ec7n tu\u1ed5i th\u1ecd c\u1ee7a d\u1ee5ng c\u1ee5 v\u00e0 khu\u00f4n, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a ph\u00f4i v\u00e0 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc.<\/p>\n\n\n\n