{"id":2824,"date":"2024-10-04T18:59:04","date_gmt":"2024-10-04T18:59:04","guid":{"rendered":"https:\/\/dongcobiogas.com\/?p=2824"},"modified":"2024-10-04T18:59:06","modified_gmt":"2024-10-04T18:59:06","slug":"dc-biogas-co-lon","status":"publish","type":"post","link":"https:\/\/dongcobiogas.com\/en\/dc-biogas-co-lon\/","title":{"rendered":"\u0110C biogas c\u1ee1 l\u1edbn"},"content":{"rendered":"\n

VAN CUNG C\u1ea4P BIOGAS CHO \u0110\u1ed8NG C\u01a0

NHI\u00caN LI\u1ec6U K\u00c9P BIOGAS\/DIESEL

NHI\u1ec0U XI LANH<\/strong><\/p>\n\n\n\n

 
           M\u1ee5c \u0111\u00edch c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a h\u1ec7 th\u1ed1ng cung c\u1ea5p biogas \u0111\u1ec3 c\u1ea3i t\u1ea1o c\u00e1c \u0111\u1ed9ng c\u01a1 Diesel nhi\u1ec1u xi lanh c\u1ee1 l\u1edbn sang ch\u1ea1y b\u1eb1ng hai nhi\u00ean li\u1ec7u. D\u1ef1a v\u00e0o ph\u00e2n t\u00edch \u00e1p su\u1ea5t tr\u00ean \u0111\u01b0\u1eddng n\u1ea1p \u0111\u1ed9ng c\u01a1, gi\u1ea3n \u0111\u1ed3 k\u00edch th\u01b0\u1edbc van cung c\u1ea5p biogas theo c\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 c\u1ee7a ngu\u1ed3n nhi\u00ean li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c l\u1eadp. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf m\u1ed9t van cung c\u1ea5p cho ph\u00e9p \u0111\u1ed9ng c\u01a1 t\u01b0\u01a1ng \u1ee9ng l\u00e0m vi\u1ec7c v\u1edbi ngu\u1ed3n biogas c\u00f3 ph\u1ea1m vi thay \u0111\u1ed5i r\u1ed9ng v\u1ec1 h\u00e0m l\u01b0\u1ee3ng CH4<\/sub> v\u00e0 \u00e1p su\u1ea5t. Nghi\u00ean c\u1ee9u c\u0169ng n\u00eau b\u1eadt s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 bi\u00ean d\u1ea1ng c\u1ee7a van cung c\u1ea5p biogas gi\u1eefa \u0111\u1ed9ng c\u01a1 nhi\u1ec1u xi lanh v\u00e0 \u0111\u1ed9ng c\u01a1 m\u1ed9t xi lanh.<\/p>\n\n\n\n

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1. Gi\u1edbi thi\u1ec7u<\/strong><\/p>\n\n\n\n

             N\u01b0\u1edbc ta c\u00f3 g\u1ea7n 80% d\u00e2n s\u1ed1 s\u1ed1ng \u1edf n\u00f4ng th\u00f4n. Ho\u1ea1t \u0111\u1ed9ng s\u1ea3n xu\u1ea5t v\u00e0 sinh ho\u1ea1t \u1edf khu v\u1ef1c n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng r\u1ea5t l\u1edbn. S\u1ef1 gia t\u0103ng gi\u00e1 x\u0103ng d\u1ea7u v\u00e0 gi\u00e1 \u0111i\u1ec7n trong th\u1eddi gian g\u1ea7n \u0111\u00e2y \u0111\u00e3 g\u00e2y r\u1ea5t nhi\u1ec1u kh\u00f3 kh\u0103n \u0111\u1ed1i v\u1edbi v\u00f9ng n\u00f4ng th\u00f4n. Nhu c\u1ea7u s\u1eed d\u1ee5ng ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng t\u1ea1i ch\u1ed7 \u0111\u1ec3 ph\u00e1t \u0111i\u1ec7n nh\u1eb1m gi\u1ea3m chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng \u0111\u00e3 tr\u1edf n\u00ean r\u1ea5t b\u1ee9c x\u00fac, \u0111\u1eb7c bi\u1ec7t \u1edf nh\u1eefng n\u01a1i s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p t\u1eadp trung, c\u00e1c tr\u1ea1i ch\u0103n nu\u00f4i c\u00f3 s\u1eb5n h\u1ea7m biogas.

            \u0110\u1ed9ng c\u01a1 chuy\u00ean d\u00f9ng ch\u1ea1y b\u1eb1ng biogas \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u00e0 th\u01b0\u01a1ng m\u1ea1i tr\u00ean th\u1ebf gi\u1edbi nh\u01b0 \u0111\u1ed9ng c\u01a1 c\u1ee7a H\u00e3ng GE Energy Jenbacher, \u00dac, c\u00f3 c\u00f4ng su\u1ea5t t\u1eeb 330kW \u0111\u1ebfn 3MW ho\u1eb7c \u0111\u1ed9ng c\u01a1 c\u1ee7a H\u00e3ng Jinan Diesel Engine Co., Ltd. Trung Qu\u1ed1c c\u00f3 c\u00f4ng su\u1ea5t t\u1eeb <\/strong>150-660kW. C\u00e1c \u0111\u1ed9ng c\u01a1 chuy\u00ean d\u00f9ng n\u00e0y th\u01b0\u1eddng c\u00f3 gi\u00e1 th\u00e0nh cao h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi \u0111\u1ed9ng c\u01a1 s\u1eed d\u1ee5ng x\u0103ng d\u1ea7u truy\u1ec1n th\u1ed1ng (th\u01b0\u1eddng \u0111\u1eaft h\u01a1n 3 l\u1ea7n [1], [2]). Nhi\u00ean li\u1ec7u biogas s\u1eed d\u1ee5ng cho \u0111\u1ed9ng c\u01a1 n\u00e0y ph\u1ea3i th\u1ecfa m\u00e3n m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u01b0 th\u00e0nh ph\u1ea7n nhi\u00ean li\u1ec7u, \u00e1p su\u1ea5t cung c\u1ea5p…. M\u1eb7t kh\u00e1c c\u00e1c \u0111\u1ed9ng c\u01a1 n\u00e0y c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m quan tr\u1ecdng l\u00e0 ch\u1ec9 ch\u1ea1y \u0111\u01b0\u1ee3c b\u1eb1ng biogas, kh\u00f4ng ch\u1ea1y \u0111\u01b0\u1ee3c b\u1eb1ng nhi\u00ean li\u1ec7u l\u1ecfng.

            C\u00e1c \u0111\u1ed9ng c\u01a1 biogas c\u00f3 m\u1eb7t tr\u00ean th\u1ecb tr\u01b0\u1eddng th\u1ebf gi\u1edbi nh\u01b0 tr\u00ean kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng \u1edf Vi\u1ec7t Nam. Th\u1eadt v\u1eady do ngu\u1ed3n \u0111i\u1ec7n cung c\u1ea5p kh\u00f4ng \u1ed5n \u0111\u1ecbnh n\u00ean t\u1ea5t c\u00e1c c\u00e1c \u0111\u01a1n v\u1ecb s\u1ea3n xu\u1ea5t \u0111\u1ec1u ph\u1ea3i trang b\u1ecb m\u00e1y ph\u00e1t \u0111i\u1ec7n d\u1ef1 ph\u00f2ng. Vi\u1ec7c \u0111\u1ea7u t\u01b0 th\u00eam m\u1ed9t m\u00e1y ph\u00e1t \u0111i\u1ec7n ch\u1ec9 ch\u1ea1y b\u1eb1ng biogas v\u1edbi gi\u00e1 cao h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi m\u00e1y ph\u00e1t \u0111i\u1ec7n ch\u1ea1y b\u1eb1ng diesel nh\u01b0 tr\u00ean \u0111\u00e3 tr\u00ecnh b\u00e0y l\u00e0 kh\u00f4ng kinh t\u1ebf. Y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng l\u00e0 l\u00e0m sao ch\u1ec9 m\u1ed9t m\u00e1y ph\u00e1t \u0111i\u1ec7n d\u1ef1 ph\u00f2ng c\u00f3 s\u1eb5n ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 m\u1ed9t m\u1eb7t, t\u1eadn d\u1ee5ng ngu\u1ed3n biogas \u0111\u1ec3 ph\u00e1t \u0111i\u1ec7n nh\u1eb1m ti\u1ebft ki\u1ec7m nhi\u00ean li\u1ec7u v\u00e0 m\u1eb7t kh\u00e1c, v\u1eabn c\u00f3 th\u1ec3 ch\u1ea1y b\u1eb1ng d\u1ea7u m\u1ecf khi h\u1ebft biogas v\u00e0 m\u1ea5t \u0111i\u1ec7n l\u01b0\u1edbi. V\u00ec v\u1eady \u0111\u1ed9ng c\u01a1 d\u1ef1 ph\u00f2ng n\u00e0y b\u1eaft bu\u1ed9c ph\u1ea3i ch\u1ea1y \u0111\u01b0\u1ee3c b\u1eb1ng biogas v\u00e0 d\u1ea7u m\u1ecf. Gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p cho v\u1ea5n \u0111\u1ec1 n\u00e0y l\u00e0 c\u1ea3i t\u1ea1o \u0111\u1ed9ng c\u01a1 diesel c\u00f3 s\u1eb5n th\u00e0nh nh\u1eefng \u0111\u1ed9ng c\u01a1 s\u1eed d\u1ee5ng hai nhi\u00ean li\u1ec7u biogas\/diesel.

            Trong nh\u1eefng c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y, ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p c\u00f4ng ngh\u1ec7 \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i \u0111\u1ed9ng c\u01a1 c\u1ee1 nh\u1ecf ch\u1ea1y b\u1eb1ng x\u0103ng hay diesel sang ch\u1ea1y b\u1eb1ng biogas. \u0110\u00e2y l\u00e0 nh\u1eefng \u0111\u1ed9ng c\u01a1 1 xi lanh c\u00f3 c\u00f4ng su\u1ea5t d\u01b0\u1edbi 10kW, ph\u00f9 h\u1ee3p v\u1edbi qui m\u00f4 ph\u00e1t \u0111i\u1ec7n ph\u1ee5c v\u1ee5 sinh ho\u1ea1t. \u0110\u1ed1i v\u1edbi c\u00e1c trang tr\u1ea1i s\u1ea3n xu\u1ea5t, nhu c\u1ea7u chuy\u1ec3n \u0111\u1ed5i \u0111\u1ed9ng c\u01a1 diesel c\u00f3 c\u00f4ng su\u1ea5t t\u1eeb v\u00e0i ch\u1ee5c \u0111\u1ebfn v\u00e0i tr\u0103m kW l\u00e0 r\u1ea5t l\u1edbn. Tr\u00ean c\u01a1 s\u1edf nguy\u00ean l\u00fd c\u1ee7a h\u1ec7 th\u1ed1ng cung c\u1ea5p biogas cho \u0111\u1ed9ng c\u01a1 c\u1ee1 nh\u1ecf \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u trong nh\u1eefng c\u00f4ng tr\u00ecnh tr\u01b0\u1edbc [3], [4], [5], trong b\u00e0i b\u00e1o n\u00e0y ch\u00fang t\u00f4i gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u l\u00fd thuy\u1ebft v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf \u0111\u1ed1i v\u1edbi c\u1ea3i t\u1ea1o \u0111\u1ed9ng c\u01a1 diesel c\u1ee1 l\u1edbn nhi\u1ec1u xi lanh sang ch\u1ea1y b\u1eb1ng biogas.<\/p>\n\n\n\n

2. Nghi\u00ean c\u1ee9u l\u00fd thuy\u1ebft<\/strong><\/p>\n\n\n\n

            B\u00e0i to\u00e1n \u0111\u1eb7t ra trong th\u1ef1c t\u1ebf l\u00e0 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a van cung c\u1ea5p biogas \u0111\u1ec3 c\u1ea3i t\u1ea1o \u0111\u1ed9ng c\u01a1 diesel nguy\u00ean th\u1ee7y c\u00f3 c\u00f4ng su\u1ea5t h\u1eefu \u00edch Pe(kW), s\u1ed1 xi lanh nxl<\/sub>, t\u1ed1c \u0111\u1ed9 n (v\u00f2ng\/ph\u00fat), \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng n\u1ea1p Dnap<\/sub>(mm) sang ch\u1ea1y b\u1eb1ng biogas\/diesel v\u1edbi ngu\u1ed3n biogas c\u00f3 h\u00e0m l\u01b0\u1ee3ng XCH4<\/sub>% methane v\u00e0 \u00e1p su\u1ea5t Pbiogas<\/sub>.
           
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3. K\u1ebft qu\u1ea3 t\u00ednh to\u00e1n<\/strong><\/p>\n\n\n\n

 
            K\u1ebft qu\u1ea3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed9ng c\u01a1 1,2, 4 v\u00e0 6 xi lanh. Gi\u1ea3 s\u1eed c\u00e1c xi lanh c\u00f3 c\u00f9ng dung t\u00edch v\u00e0 c\u00e1c \u0111\u1ed9ng c\u01a1 c\u00f3 c\u00f9ng t\u1ed1c \u0111\u1ed9 1500 v\u00f2ng\/ph\u00fat. C\u00f4ng su\u1ea5t c\u00f3 \u00edch c\u1ee7a m\u1ed7i xi lanh l\u00e0 10kW. Th\u00e0nh ph\u1ea7n CH4<\/sub> trong biogas s\u1eed d\u1ee5ng l\u00e0 60% v\u1edbi \u00e1p su\u1ea5t biogas l\u00e0 100Pa. Biogas phun v\u00e0o \u0111\u01b0\u1eddng n\u1ea1p \u0111\u1ed9ng c\u01a1 l\u00e0 do ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa ngu\u1ed3n cung c\u1ea5p v\u00e0 \u00e1p su\u1ea5t tr\u00ean \u0111\u01b0\u1eddng n\u1ea1p. Khi xi lanh th\u1ef1c hi\u1ec7n k\u1ef3 n\u1ea1p, \u0111\u1ed9 ch\u00e2n kh\u00f4ng tr\u00ean \u0111\u01b0\u1eddng n\u1ea1p t\u0103ng, t\u1ea1o ra xung v\u1eadn t\u1ed1c biogas. Trong ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a chu tr\u00ecnh, d\u00f9 kh\u00f4ng ph\u1ea3i l\u00e0 k\u1ef3 n\u1ea1p, biogas v\u1eabn \u0111\u01b0\u1ee3c cung c\u1ea5p do \u00e1p su\u1ea5t c\u1ee7a ngu\u1ed3n l\u1edbn h\u01a1n \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed. H\u00ecnh 2, 3, 4 v\u00e0 5 gi\u1edbi thi\u1ec7u di\u1ec5n bi\u1ebfn t\u1ed1c \u0111\u1ed9 phun biogas \u1ee9ng v\u1edbi c\u00e1c \u0111\u1ed9ng c\u01a1 1, 2, 4 v\u00e0 6 xi lanh. Khi s\u1ed1 xi lanh t\u0103ng l\u00ean th\u00ec m\u1ee9c \u0111\u1ed9 m\u1ea1ch \u0111\u1ed9ng c\u1ee7a v\u1eadn t\u1ed1c gi\u1ea3m v\u00ec c\u00f3 nh\u1eefng giai \u0111o\u1ea1n c\u1ea3 hai xi lanh c\u00f9ng th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh n\u1ea1p.

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            L\u01b0u l\u01b0\u1ee3ng biogas cung c\u1ea5p t\u1ec9 l\u1ec7 v\u1edbi c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1. Do \u0111\u00f3 c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1 c\u00f3 m\u1ed1i quan h\u1ec7 b\u1eadc 2 v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 cung c\u1ea5p biogas. C\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng, \u00e1p su\u1ea5t biogas v\u00e0 \u0111\u01b0\u1eddng k\u00ednh \u0111\u01b0\u1eddng \u1ed1ng n\u1ea1p, m\u1ed1i quan h\u1ec7 b\u1eadc 2 n\u00e0y \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n tr\u00ean h\u00ecnh 6 khi c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1 t\u1ec9 l\u1ec7 v\u1edbi s\u1ed1 xi lanh. V\u1edbi c\u00e1c \u0111\u1ed9ng c\u01a1 c\u00f3 s\u1ed1 xi lanh kh\u00e1c nhau nh\u01b0ng c\u00f9ng c\u00f4ng su\u1ea5t v\u00e0 \u0111\u01b0\u1eddng k\u00ednh \u0111\u01b0\u1eddng \u1ed1ng n\u1ea1p, \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 n\u1ea1p biogas c\u1ef1c \u0111\u1ea1i c\u0169ng kh\u00e1c nhau. \u0110\u1ed9ng c\u01a1 c\u00e0ng \u00edt xi lanh, \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 cung c\u1ea5p biogas c\u00e0ng b\u00e9 v\u00ec t\u1ed1c \u0111\u1ed9 biogas cung c\u1ea5p l\u1edbn h\u01a1n do \u0111\u1ed9 ch\u00e2n kh\u00f4ng tr\u00ean \u0111\u01b0\u1eddng n\u1ea1p t\u0103ng m\u1ea1nh trong qu\u00e1 tr\u00ecnh n\u1ea1p (h\u00ecnh 7).
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            Tr\u00ean c\u01a1 s\u1edf t\u00ednh to\u00e1n tr\u00ean \u0111\u00e2y, ch\u00fang ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 cung c\u1ea5p biogas c\u1ee5c \u0111\u1ea1i \u1ee9ng v\u1edbi c\u00e1c ki\u1ec3u v\u00e0 c\u1ee1 \u0111\u1ed9ng c\u01a1 kh\u00e1c nhau. H\u00ecnh 8 gi\u1edbi thi\u1ec7u\"\" bi\u1ec3u \u0111\u1ed3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng k\u00ednh l\u1ed7 n\u1ea1p biogas \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 6 xi lanh c\u00f3 \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng n\u1ea1p thay \u0111\u1ed5i t\u1eeb 40 \u0111\u1ebfn 80mm v\u00e0 \u00e1p su\u1ea5t biogas thay \u0111\u1ed5i t\u1eeb 100Pa \u0111\u1ebfn 200Pa.

            \u0110\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 dual fuel \u0111\u01b0\u1ee3c c\u1ea3i t\u1ea1o t\u1eeb \u0111\u1ed9ng c\u01a1 diesel, c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i l\u01b0\u1ee3ng biogas cung c\u1ea5p trong h\u00e0nh tr\u00ecnh n\u1ea1p. Do \u0111\u00f3 b\u1ed9 \u0111i\u1ec1u t\u1ed1c \u0111\u1ed9ng c\u01a1 ph\u1ea3i t\u00e1c \u0111\u1ed9ng l\u00e0m thay \u0111\u1ed5i v\u1ecb tr\u00ed c\u1ee7a kim c\u00f4n so v\u1edbi \u0111\u1ebf van biogas (h\u00ecnh 1). Bi\u00ean d\u1ea1ng c\u1ee7a kim c\u00f4n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n theo ti\u1ebft di\u1ec7n l\u01b0u th\u00f4ng c\u1ea7n thi\u1ebft c\u1ee7a van cung c\u1ea5p \u1ee9ng v\u1edbi m\u1ed7i gi\u00e1 tr\u1ecb c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1. H\u00ecnh 9 gi\u1edbi thi\u1ec7u bi\u00ean d\u1ea1ng c\u1ee7a kim c\u00f4n \u0111\u1ed9ng c\u01a1 1 xi lanh c\u00f4ng su\u1ea5t c\u1ef1c \u0111\u1ea1i 10kW \u1ee9ng v\u1edbi \u00e1p su\u1ea5t biogas cung c\u1ea5p thay \u0111\u1ed5i t\u1eeb 100 \u0111\u1ebfn 300Pa v\u00e0 h\u00ecnh 10 gi\u1edbi thi\u1ec7u bi\u00ean d\u1ea1ng kim c\u00f4n c\u1ee7a \u0111\u1ed9ng c\u01a1 6 xi lanh, c\u00f4ng su\u1ea5t c\u1ef1c \u0111\u1ea1i 60kW v\u1edbi \u00e1p su\u1ea5t biogas cung c\u1ea5p thay \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1. Ch\u00fang ta th\u1ea5y s\u1ef1 kh\u00e1c bi\u1ec7t r\u1ea5t r\u00f5 \u1edf \u0111\u00e2y l\u00e0 kim c\u00f4n \u0111\u1ed9ng c\u01a1 1 xi lanh c\u00f3 d\u1ea1ng l\u1ed3i, trong khi \u0111\u00f3 kim c\u00f4n c\u1ee7a \u0111\u1ed9ng c\u01a1 nhi\u1ec1u xi lanh c\u00f3 d\u1ea1ng l\u00f5m.
<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n



            Do ngu\u1ed3n biogas th\u01b0\u1eddng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4\"\"ng \u1ed5n \u0111\u1ecbnh n\u00ean khi t\u00ednh to\u00e1n van cung c\u1ea5p biogas ch\u00fang ta c\u1ea7n d\u1ef1 ki\u1ebfn kh\u1ea3 n\u0103ng l\u00e0m vi\u1ec7c c\u1ee7a n\u00f3 \u1edf c\u00e1c ngu\u1ed3n biogas c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1c nhau. H\u00ecnh 11 cho th\u1ea5y n\u1ebfu kim c\u00f4n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n v\u1edbi ngu\u1ed3n biogas t\u1ed1t (v\u00ed d\u1ee5 80% CH4<\/sub>) th\u00ec khi l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c ngu\u1ed3n biogas c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p h\u01a1n (nh\u01b0 60% hay 40% CH4<\/sub>) th\u00ec \u0111\u1ed9ng c\u01a1 kh\u00f4ng th\u1ec3 ph\u00e1t h\u1ebft c\u00f4ng su\u1ea5t. V\u00ec v\u1eady \u0111\u1ec3 c\u00f4ng c\u01a1 c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c v\u1edbi c\u00f4ng su\u1ea5t t\u1ed1i \u0111a \u1ee9ng v\u1edbi c\u00e1c ngu\u1ed3n biogas kh\u00e1c nhau, kim c\u00f4n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi ngu\u1ed3n biogas ngh\u00e8o nh\u1ea5t (v\u00ed d\u1ee5 40% CH4<\/sub>). Khi l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c ngu\u1ed3n biogas gi\u00e0u h\u01a1n, kim c\u00f4n ch\u1ec9 d\u1ecbch chuy\u1ec3n m\u1ed9t ph\u1ea7n h\u00e0nh tr\u00ecnh c\u1ee7a n\u00f3. Tuy nhi\u00ean khi \u0111\u00f3 \u0111\u1ed9 d\u1ed1c c\u1ee7a kim c\u00f4n t\u0103ng, kh\u1ea3 n\u0103ng gi\u1eef t\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng c\u01a1 \u1ed5n \u0111\u1ecbnh kh\u00f3 h\u01a1n.

 

            Gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y l\u00e0 thi\u1ebft k\u1ebf kim c\u00f4n \u1ee9ng v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng biogas trung b\u00ecnh (v\u00ed d\u1ee5 60% CH4<\/sub>). Khi l\u00e0m vi\u1ec7c v\u1edbi ngu\u1ed3n biogas ngh\u00e8o h\u01a1n, kim c\u00f4n \u0111\u01b0\u1ee3c k\u00e9o ra kh\u1ecfi \u0111\u1ebfn van. Khi \u0111\u00f3 ch\u00fang ta c\u1ea7n b\u1ed1 tr\u00ed th\u00eam van h\u1ea1n ch\u1ebf l\u01b0u l\u01b0\u1ee3ng biogas c\u1ef1c \u0111\u1ea1i \u1edf \u0111\u1ea7u ra c\u1ee7a van cung c\u1ea5p. Khi l\u00e0m vi\u1ec7c v\u1edbi biogas c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t h\u01a1n, h\u00e0nh tr\u00ecnh c\u1ee7a kim c\u00f4n ng\u1eafn h\u01a1n nh\u01b0ng \u0111\u1ed9 d\u1ed1c c\u1ee7a m\u1eb7t c\u00f4n kh\u00f4ng l\u1edbn l\u1eafm, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng duy tr\u00ec t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n\n\n\n

4. K\u1ebft qu\u1ea3 \u1ee9ng d\u1ee5ng<\/strong><\/p>\n\n\n\n

            K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u l\u00fd thuy\u1ebft tr\u00ean \u0111\u00e2y \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n van cung c\u1ea5p biogas cho \u0111\u1ed9ng c\u01a1 6 xi lanh, k\u00e9o m\u00e1y ph\u00e1t \u0111i\u1ec7n c\u00f4ng su\u1ea5t 60kW \u0111\u01b0\u1ee3c c\u1ea3i t\u1ea1o t\u1eeb \u0111\u1ed9ng c\u01a1 diesel t\u1ea1i Tr\u1ea1i ch\u0103n nu\u00f4i H\u00f2a Ph\u00fa, \u0110\u00e0 N\u1eb5ng. Kh\u00ed biogas t\u1eeb h\u1ea7m sinh kh\u00ed \u0111\u01b0\u1ee3c d\u1eabn t\u1edbi h\u1ea7m l\u1ecdc H2<\/sub>S tr\u01b0\u1edbc khi cung c\u1ea5p cho \u0111\u1ed9ng c\u01a1 (h\u00ecnh 12). H\u00e0m l\u01b0\u1ee3ng CH4<\/sub> trong biogas sau khi l\u1ecdc dao \u0111\u1ed9ng t\u1eeb 40 \u0111\u1ebfn 70%. Gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a h\u00e0m l\u01b0\u1ee3ng CH4<\/sub> trong biogas l\u00e0 60% \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u00ednh to\u00e1n kim c\u00f4n c\u1ee7a van cung c\u1ea5p (h\u00ecnh 13). Kim c\u00f4n c\u1ee7a van \u0111\u01b0\u1ee3c d\u1eabn \u0111\u1ed9ng b\u1edfi b\u1ed9 \u0111i\u1ec1u t\u1ed1c. Do kim c\u00f4n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n v\u1edbi gi\u00e1 tr\u1ecb trung gian c\u1ee7a ch\u1ea5t l\u01b0\u1ee3ng biogas n\u00ean \u0111\u1ec3 \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c v\u1edbi c\u00f4ng su\u1ea5t c\u1ef1c \u0111\u1ea1i khi h\u00e0m l\u01b0\u1ee3ng CH4<\/sub> trong biogas gi\u1ea3m, ch\u00fang ta b\u1ed1 tr\u00ed th\u00eam van h\u1ea1n ch\u1ebf l\u01b0u l\u01b0\u1ee3ng c\u1ef1c \u0111\u1ea1i biogas gi\u1eefa \u0111\u1ea7u ra c\u1ee7a van cung c\u1ea5p v\u00e0 \u0111\u01b0\u1eddng n\u1ea1p \u0111\u1ed9ng c\u01a1 (h\u00ecnh 14).<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n

 
            K\u1ebft qu\u1ea3 cho th\u1ea5y \u0111\u1ed9ng c\u01a1 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh khi ch\u1ebf \u0111\u1ed9 t\u1ea3i b\u00ean ngo\u00e0i t\u0103ng hay gi\u1ea3m \u0111\u1ed9t ng\u1ed9t. T\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c gi\u1eef \u1ed5n \u0111\u1ecbnh m\u1ed9t c\u00e1ch t\u1ef1 \u0111\u1ed9ng. Dao \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p c\u1ee7a m\u00e1y ph\u00e1t \u0111i\u1ec7n kh\u00f4ng qu\u00e1 5% \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c. 
<\/p>\n\n\n\n

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

            K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u tr\u00ean \u0111\u00e2y cho ph\u00e9p ch\u00fang ta r\u00fat ra \u0111\u01b0\u1ee3c nh\u1eefng k\u1ebft lu\u1eadn sau \u0111\u00e2y:

–        C\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1 c\u00f3 quan h\u1ec7 b\u1eadc 2 v\u1edbi \u0111\u01b0\u1eddng k\u00ednh c\u1ef1c \u0111\u1ea1i c\u1ee7a l\u1ed7 n\u1ea1p biogas. Khi hai \u0111\u1ed9ng c\u01a1 c\u00f3 c\u00f9ng c\u00f4ng su\u1ea5t v\u00e0 c\u00f9ng \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng n\u1ea1p, \u0111\u01b0\u1eddng k\u00ednh c\u1ef1c \u0111\u1ea1i c\u1ee7a l\u1ed7 n\u1ea1p biogas t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi s\u1ed1 xi lanh.
–        Bi\u00ean d\u1ea1ng kim c\u00f4n c\u1ee7a van cung c\u1ea5p biogas c\u00f3 d\u1ea1ng l\u1ed3i \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 1 xi lanh, chuy\u1ec3n sang d\u1ea1ng l\u00f5m \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 nhi\u1ec1u xi lanh.
–        C\u00f3 th\u1ec3 thi\u1ebft k\u1ebf van cung c\u1ea5p biogas \u1ee9ng v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng trung b\u00ecnh c\u1ee7a nhi\u00ean li\u1ec7u k\u00e8m theo van h\u1ea1n ch\u1ebf l\u01b0u l\u01b0\u1ee3ng biogas c\u1ef1c \u0111\u1ea1i \u0111\u1ec3 cho ph\u00e9p \u0111\u1ed9ng c\u01a1 l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c ngu\u1ed3n biogas c\u00f3 th\u00e0nh ph\u1ea7n CH4<\/sub> v\u00e0 \u00e1p su\u1ea5t thay \u0111\u1ed5i trong ph\u1ea1m vi r\u1ed9ng.<\/p>\n\n\n\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/strong><\/p>\n\n\n\n

    \n
  1. http:\/\/www.sdxsgs.com<\/li>\n\n\n\n
  2. http:\/\/www.vatgia.com<\/li>\n\n\n\n
  3. B\u00f9i V\u0103n Ga, Tr\u01b0\u01a1ng L\u00ea B\u00edch Tr\u00e2m, Tr\u01b0\u01a1ng Ho\u00e0ng Thi\u1ec7n, L\u00ea Minh Ti\u1ebfn:\u00a0H\u1ec7 th\u1ed1ng cung c\u1ea5p kh\u00ed biogas cho \u0111\u1ed9ng c\u01a1 c\u1ee1 nh\u1ecf<\/em>, Tuy\u1ec3n t\u1eadp H\u1ed9i Ngh\u1ecb C\u01a1 h\u1ecdc Th\u1ee7y kh\u00ed to\u00e0n qu\u1ed1c, Hu\u1ebf, 26-28\/7\/2007, pp. 159-168.<\/li>\n\n\n\n
  4. B\u00f9i V\u0103n Ga, Tr\u1ea7n V\u0103n Nam, Tr\u01b0\u01a1ng L\u00ea B\u00edch Tr\u00e2m:\u00a0Engines fueled by biogas: A contribution to energy saving and climate change mitigation,<\/em>\u00a0The 6th Seminar on Environment Science and Technology Issues Related to Climate Change Mitigation. Japan-Vietnam Core University Program, Osaka, Japan, 26-28 November 2008.<\/li>\n\n\n\n
  5. B\u00f9i V\u0103n Ga, Tr\u1ea7n V\u0103n Quang, Tr\u01b0\u01a1ng L\u00ea B\u00edch Tr\u00e2m: \u0110\u1ed9ng c\u01a1 t\u0129nh t\u1ea1i ch\u1ea1y b\u1eb1ng hai nhi\u00ean li\u1ec7u biogas-diesel.T\u1ea1p ch\u00ed Giao Th\u00f4ng V\u1eadn T\u1ea3i, pp 23-26, th\u00e1ng 12-2008<\/em><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    VAN CUNG C\u1ea4P BIOGAS CHO \u0110\u1ed8NG C\u01a0 NHI\u00caN LI\u1ec6U K\u00c9P BIOGAS\/DIESEL NHI\u1ec0U XI LANH             M\u1ee5c \u0111\u00edch c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a h\u1ec7 th\u1ed1ng cung c\u1ea5p biogas \u0111\u1ec3 c\u1ea3i t\u1ea1o c\u00e1c \u0111\u1ed9ng c\u01a1 Diesel nhi\u1ec1u xi lanh c\u1ee1 l\u1edbn sang ch\u1ea1y b\u1eb1ng hai nhi\u00ean li\u1ec7u. D\u1ef1a v\u00e0o ph\u00e2n t\u00edch \u00e1p […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55,56],"tags":[],"class_list":["post-2824","post","type-post","status-publish","format-standard","hentry","category-nghien-cuu-2","category-research"],"acf":[],"yoast_head":"\n\u0110C biogas c\u1ee1 l\u1edbn - \u0110\u1ed9ng c\u01a1 Biogas<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dongcobiogas.com\/en\/dc-biogas-co-lon\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110C biogas c\u1ee1 l\u1edbn - \u0110\u1ed9ng c\u01a1 Biogas\" \/>\n<meta property=\"og:description\" content=\"VAN CUNG C\u1ea4P BIOGAS CHO \u0110\u1ed8NG C\u01a0 NHI\u00caN LI\u1ec6U K\u00c9P BIOGAS\/DIESEL NHI\u1ec0U XI LANH             M\u1ee5c \u0111\u00edch c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a h\u1ec7 th\u1ed1ng cung c\u1ea5p biogas \u0111\u1ec3 c\u1ea3i t\u1ea1o c\u00e1c \u0111\u1ed9ng c\u01a1 Diesel nhi\u1ec1u xi lanh c\u1ee1 l\u1edbn sang ch\u1ea1y b\u1eb1ng hai nhi\u00ean li\u1ec7u. 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