{"id":2444,"date":"2023-05-29T10:36:22","date_gmt":"2023-05-29T10:36:22","guid":{"rendered":"https:\/\/heatmanage.com\/?p=2444"},"modified":"2023-05-31T10:39:56","modified_gmt":"2023-05-31T10:39:56","slug":"chiet-xuat-lignin","status":"publish","type":"post","link":"https:\/\/heatmanage.com\/vi\/recovery-boilers\/lignin-extraction\/","title":{"rendered":"T\u1ea1i sao vi\u1ec7c chi\u1ebft xu\u1ea5t lignin th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi m\u1ed9t \u0111\u00e1nh \u0111\u1ed5i\u00a0"},"content":{"rendered":"

Nhi\u1ec1u nh\u00e0 m\u00e1y b\u1ed9t gi\u1ea5y v\u00e0 gi\u1ea5y \u0111ang t\u00ecm ki\u1ebfm c\u00e1ch b\u00f9 \u0111\u1eafp t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng t\u1eeb ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ecd \u0111\u1ed3ng th\u1eddi \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng to\u00e0n c\u1ea7u v\u00e0 n\u1ed9i b\u1ed9. M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ph\u1ed5 bi\u1ebfn l\u00e0 t\u1ea1o kh\u1ea3 n\u0103ng thay th\u1ebf d\u1ea7u m\u1ecf b\u1eb1ng lignin l\u00e0m th\u00e0nh ph\u1ea7n c\u1ea5u th\u00e0nh trong vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 gi\u00e1 tr\u1ecb cao. L\u00e0 m\u1ed9t lo\u1ea1i s\u1ee3i t\u1ef1 nhi\u00ean c\u00f3 trong h\u1ea7u h\u1ebft m\u1ecdi lo\u1ea1i th\u1ef1c v\u1eadt s\u1ed1ng, lignin \u0111\u00f3ng vai tr\u00f2 l\u1edbn trong kh\u1ea3 n\u0103ng gi\u1eef g\u00ecn \u0111\u1ed9 c\u1ee9ng \u0111\u1eb7c tr\u01b0ng c\u1ee7a g\u1ed7 v\u00e0 t\u00ednh \u0111\u00e0n h\u1ed3i ch\u1ed1ng l\u1ea1i s\u1ef1 m\u1ee5c n\u00e1t.<\/span><\/p>\n

Kh\u00f4ng ch\u1ec9 mang l\u1ea1i nh\u1eefng c\u01a1 h\u1ed9i tuy\u1ec7t v\u1eddi \u0111\u1ec3 thay th\u1ebf v\u1eadt li\u1ec7u c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb nhi\u00ean li\u1ec7u h\u00f3a th\u1ea1ch b\u1eb1ng v\u1eadt li\u1ec7u t\u00e1i t\u1ea1o, lignin c\u00f2n c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m l\u01b0\u1ee3ng ph\u00e1t th\u1ea3i ch\u1ea5t \u00f4 nhi\u1ec5m. Tuy nhi\u00ean, vi\u1ec7c chi\u1ebft xu\u1ea5t lignin l\u1ea1i \u0111i k\u00e8m v\u1edbi m\u1ed9t c\u00e1i gi\u00e1 ph\u1ea3i tr\u1ea3.<\/span><\/p>\n

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Chi ph\u00ed cao v\u00e0 r\u1ee7i ro an to\u00e0n c\u1ee7a vi\u1ec7c chi\u1ebft xu\u1ea5t lignin\u00a0<\/b><\/h2>\n

Tr\u01b0\u1edbc khi lignin c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t kh\u1ed1i x\u00e2y d\u1ef1ng thay th\u1ebf, tr\u01b0\u1edbc ti\u00ean n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c chi\u1ebft xu\u1ea5t t\u1eeb m\u1ed9t s\u1ea3n ph\u1ea9m ph\u1ee5 c\u1ee7a qu\u00e1 tr\u00ecnh n\u1ea5u b\u1ed9t gi\u1ea5y Kraft c\u00f3 t\u00ean l\u00e0 H\u1eafc d\u1ecbch (Black Liquor). Ngo\u00e0i lignin, H\u1eafc d\u1ecbch c\u00f2n bao g\u1ed3m hemicellulose v\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t v\u00f4 c\u01a1. H\u1eafc d\u1ecbch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 cung c\u1ea5p b\u1ed9t gi\u1ea5y cho vi\u1ec7c s\u1ea3n xu\u1ea5t gi\u1ea5y v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c, v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ed1t trong m\u1ed9t l\u00f2 thu h\u1ed3i \u0111\u1ec3 t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng cho nh\u00e0 m\u00e1y b\u1ed9t gi\u1ea5y Kraft m\u1eb7c d\u00f9 ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a l\u00f2 l\u00e0 t\u00e1i ch\u1ebf h\u00f3a ch\u1ea5t.\u00a0<\/span><\/p>\n

Tuy nhi\u00ean, cho d\u00f9 m\u1ed9t nh\u00e0 m\u00e1y ch\u1ecdn chi\u1ebft xu\u1ea5t lignin th\u00f4ng qua k\u1ebft t\u1ee7a axit, x\u1eed l\u00fd b\u1eb1ng enzyme, l\u1ecdc m\u00e0ng, chi\u1ebft dung m\u00f4i hay ch\u01b0ng c\u1ea5t h\u01a1i n\u01b0\u1edbc, th\u00ec \u0111i\u1ec1u \u0111\u00f3 th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi nh\u1eefng h\u1ec7 l\u1ee5y v\u01b0\u1ee3t xa kho\u1ea3n \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u \u0111\u1ec3 cho ph\u00e9p qu\u00e1 tr\u00ecnh chi\u1ebft xu\u1ea5t di\u1ec5n ra.\u00a0<\/span><\/p>\n

Khi lignin \u0111\u01b0\u1ee3c t\u00e1ch ra kh\u1ecfi d\u1ecbch \u0111en, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a nhi\u00ean li\u1ec7u s\u1ebd gi\u1ea3m xu\u1ed1ng v\u00ec qu\u00e1 tr\u00ecnh chi\u1ebft t\u00e1ch c\u00f3 th\u1ec3 l\u00e0m t\u0103ng n\u1ed3ng \u0111\u1ed9 c\u00e1c h\u1ee3p ch\u1ea5t v\u00f4 c\u01a1 trong d\u1ecbch \u0111en nh\u01b0 natri, clo v\u00e0 l\u01b0u hu\u1ef3nh. \u0110i\u1ec1u n\u00e0y t\u1ea1o c\u01a1 h\u1ed9i cho t\u00ecnh tr\u1ea1ng b\u00e1m b\u1ea9n nghi\u00eam tr\u1ecdng x\u1ea3y ra do c\u00e1c nh\u00e0 m\u00e1y ph\u1ea3i n\u1ea1p nhi\u1ec1u nhi\u00ean li\u1ec7u h\u01a1n v\u00e0o l\u00f2 h\u01a1i thu h\u1ed3i \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho s\u1ef1 s\u1ee5t gi\u1ea3m nhi\u1ec7t tr\u1ecb. S\u1ef1 s\u1ee5t gi\u1ea3m \u0111\u00f3 \u0111\u1ed5i l\u1ea1i s\u1ebd l\u00e0m t\u0103ng chi ph\u00ed c\u1ee7a nh\u00e0 m\u00e1y trong vi\u1ec7c gi\u1eef cho l\u00f2 h\u01a1i s\u1ea1ch s\u1ebd b\u1eb1ng c\u00e1ch th\u1ed5i b\u1ed3 h\u00f3ng b\u1eb1ng h\u01a1i n\u01b0\u1edbc. T\u00ecnh tr\u1ea1ng b\u00e1m b\u1ea9n v\u00e0 \u0111\u00f3ng c\u1eb7n n\u1eb7ng th\u1eadm ch\u00ed c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 an to\u00e0n \u0111\u1ebfn m\u1ed9t m\u1ee9c \u0111\u1ed9 n\u00e0o \u0111\u00f3.\u00a0<\/span><\/p>\n

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H\u1ea1n ch\u1ebf nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a qu\u00e1 tr\u00ecnh chi\u1ebft xu\u1ea5t lignin b\u1eb1ng<\/b> H\u1ec7 th\u1ed1ng th\u1ed5i b\u1ed3 h\u00f3ng t\u00e1c \u0111\u1ed9ng cao (HISS)<\/b><\/a>\u2122<\/b>)<\/b><\/a> \u00a0<\/b><\/h2>\n

X\u00e9t \u0111\u1ebfn c\u00e1c r\u1ee7i ro li\u00ean quan \u0111\u1ebfn vi\u1ec7c chi\u1ebft xu\u1ea5t lignin, \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 m\u00e1y b\u1ed9t gi\u1ea5y v\u00e0 gi\u1ea5y l\u00e0 ph\u1ea3i c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u00e1c m\u1eb7t l\u1ee3i v\u00e0 m\u1eb7t h\u1ea1i tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u quy tr\u00ecnh. Vi\u1ec7c ph\u1ea3i t\u0103ng t\u1ea3i tr\u1ecdng l\u00f2 h\u01a1i \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho s\u1ef1 s\u1ee5t gi\u1ea3m s\u1ea3n l\u01b0\u1ee3ng th\u01b0\u1eddng \u0111\u1ee7 \u0111\u1ec3 ng\u0103n c\u1ea3n h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 m\u00e1y \u0111\u1ea7u t\u01b0. Nh\u01b0ng vi\u1ec7c gi\u1edbi thi\u1ec7u<\/span> HISS\u2122<\/span><\/a> \u0111\u1ed1i v\u1edbi quy tr\u00ecnh mang l\u1ea1i m\u1ed9t gi\u1ea3i ph\u00e1p h\u1ea5p d\u1eabn.\u00a0<\/span><\/p>\n

M\u1eb7c d\u00f9 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng hi\u1ec7n t\u1ea1i c\u1ee7a <\/span>HISS\u2122<\/span><\/a> s\u1eed d\u1ee5ng<\/span> v\u00ec c\u00e1c l\u00fd do kh\u00e1c nhau, h\u1ec7 th\u1ed1ng n\u00e0y c\u00f2n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m chi ph\u00ed th\u1ed5i mu\u1ed9i h\u01a1i n\u01b0\u1edbc c\u1ee7a nh\u00e0 m\u00e1y b\u1eb1ng c\u00e1ch gi\u1ea3m l\u01b0\u1ee3ng h\u01a1i n\u01b0\u1edbc s\u1eed d\u1ee5ng \u0111i 30-45%. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 vi\u1ec7c th\u1ed5i mu\u1ed9i c\u00f3 th\u1ec3 di\u1ec5n ra th\u01b0\u1eddng xuy\u00ean g\u1ea5p \u0111\u00f4i v\u1edbi c\u00f9ng m\u1ed9t l\u01b0\u1ee3ng h\u01a1i n\u01b0\u1edbc ho\u1eb7c l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u1ea3 hai. Do b\u1ea3n ch\u1ea5t c\u1ee7a<\/span> HISS\u2122<\/span><\/a>, n\u00f3 c\u0169ng k\u00e9o d\u00e0i th\u1eddi gian v\u1eadn h\u00e0nh c\u1ee7a l\u00f2 h\u01a1i b\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u nhu c\u1ea7u ph\u1ea3i d\u1eebng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 b\u1ea3o tr\u00ec. Tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau c\u0169ng \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i do l\u01b0\u1ee3ng n\u01b0\u1edbc ng\u01b0ng t\u1ee5 t\u1eeb h\u01a1i n\u01b0\u1edbc gi\u1ea3m xu\u1ed1ng.\u00a0<\/span><\/p>\n

Do \u0111\u00f3, b\u1ea5t c\u1ee9 khi n\u00e0o m\u1ed9t nh\u00e0 m\u00e1y \u0111ang c\u00e2n nh\u1eafc \u0111\u1ea7u t\u01b0 v\u00e0o nh\u00e0 m\u00e1y l\u1ecdc sinh h\u1ecdc, h\u1ecd n\u00ean \u0111\u1ea3m b\u1ea3o r\u1eb1ng vi\u1ec7c chi\u1ebft xu\u1ea5t lignin v\u00e0<\/span> HISS\u2122<\/span><\/a> \u0111i \u0111\u00f4i v\u1edbi nhau.\u00a0<\/span><\/p>\n

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HISS\u2122<\/b><\/a> Th\u1ed5i b\u1ed3 h\u00f3ng nhi\u1ec1u h\u01a1n, d\u00f9ng \u00edt h\u01a1i n\u01b0\u1edbc h\u01a1n.<\/b><\/h2>\n

H\u1ec7 th\u1ed1ng th\u1ed5i b\u1ed3 h\u00f3ng va \u0111\u1eadp m\u1ea1nh \u0111\u01b0\u1ee3c c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf (HISS\u2122) ph\u00e1 v\u1ee1 c\u00e1ch ti\u1ebfp c\u1eadn \u201ct\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay v\u1eabn l\u00e0m\u201d \u0111\u1ed1i v\u1edbi vi\u1ec7c th\u1ed5i b\u1ed3 h\u00f3ng b\u1eb1ng h\u01a1i n\u01b0\u1edbc t\u1ed1n nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng. B\u1eb1ng c\u00e1ch v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng th\u1ed5i b\u1ed3 h\u00f3ng b\u1eb1ng h\u01a1i n\u01b0\u1edbc hi\u1ec7n c\u00f3 theo c\u00e1ch th\u00f4ng minh h\u01a1n v\u00e0 \u00edt l\u00e3ng ph\u00ed h\u01a1n, c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m m\u1ed9t n\u1eeda l\u01b0\u1ee3ng h\u01a1i n\u01b0\u1edbc v\u00e0 m\u1ed9t n\u1eeda th\u1eddi gian. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u0103ng hi\u1ec7u su\u1ea5t, \u0111\u1ed9 s\u1eb5n s\u00e0ng v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a l\u00f2 h\u01a1i m\u00e0 kh\u00f4ng c\u1ea7n l\u1eafp \u0111\u1eb7t th\u00eam b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb th\u1ed5i b\u1ed3 h\u00f3ng m\u1edbi n\u00e0o ho\u1eb7c x\u00e2y d\u1ef1ng l\u1ea1i l\u00f2 h\u01a1i.<\/span><\/p>\n

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Many pulp and paper mills are looking for ways to compensate for the environmental impact of their operations while reaching global and internal sustainability goals. One common approach is enabling the possibility to replace oil as a building block in the production of high-value products with lignin. A natural fiber in almost every living plant, lignin plays a large role in wood\u2019s ability to retain its characteristic stiffness and resiliency against decay. Not only does lignin present amazing opportunities to replace fossil-based materials with renewable materials, but it can also decrease the discharge of pollutants. However, lignin extraction comes with a catch.   The high costs and safety risks of lignin extraction\u00a0 Before lignin can be put to use as an alternative building block, it must first be extracted from a by-product of the Kraft pulping process called Black Liquor. In addition to lignin, Black Liquor consists of hemicellulose and inorganic compounds. Black Liquor is used to supply pulp for […]<\/p>\n","protected":false},"author":8,"featured_media":2447,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[65,51],"tags":[],"class_list":["post-2444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recovery-boilers","category-optimized-steam-sootblowing-articles"],"_links":{"self":[{"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/posts\/2444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/comments?post=2444"}],"version-history":[{"count":5,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/posts\/2444\/revisions"}],"predecessor-version":[{"id":3846,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/posts\/2444\/revisions\/3846"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/media\/2447"}],"wp:attachment":[{"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/media?parent=2444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/categories?post=2444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/heatmanage.com\/vi\/wp-json\/wp\/v2\/tags?post=2444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}