Lahu wai lanahu
I. Na Mea Kino a me na Hana
ʻO ka slurry-water slurry he slurry i hana ʻia me ka lanahu, ka wai a me kahi liʻiliʻi o nā mea hoʻohui kemika. E like me ke kumu, ua maheleia ka lanahu-wai slurry i kiʻekiʻe-concentration lanahu-wai slurry wahie a me ka lanahu-wai slurry no Texaco kapuahi gasification. Hiki ke hoʻomoʻi ʻia ka slurry-wai lanahu, hoʻomoʻi ʻia, mālama ʻia a puhi ʻia a puhi ʻia i kahi kūlana paʻa. Ma kahi o 2 tons o ka lanahu-wai slurry hiki ke pani i 1 tona o ka aila wahie.
ʻO ka slurry wai lanahu no ka puhi ʻana i ka hana ʻoi aku ka maikaʻi o ka puhi ahi, mālama i ka ikehu a me nā pōmaikaʻi kaiapuni, kahi mea nui o ka ʻenehana lanahu maʻemaʻe. Hiki ke lawe ʻia ka slurry wai lanahu ma kahi lōʻihi e ka lawe ʻana i ka pipeline me ka haʻahaʻa haʻahaʻa a me nā kumu hana haʻahaʻa. Hiki ke puhi pono ʻia me ka wai ʻole ma hope o ka hōʻea ʻana i ka terminal, a paʻa piha ka mālama ʻana a me ke kaʻina hana.
E lilo ka wai i ka wela a ʻaʻole hiki ke hana i ka wela ma ke kaʻina puhi. No laila, pono e piʻi ka ʻona o ka lanahu i kahi kiʻekiʻe kiʻekiʻe - 65 ~ 70% ma ka laulā. ʻO nā hoʻohui kemika ma kahi o 1%. ʻO ka lilo ʻana o ka wela e ka wai ma kahi o 4% o ka waiwai calorific o ka slurry wai lanahu. ʻO ka wai he mea hiki ʻole ke ʻalo ʻia i ka gasification. Mai kēia manaʻo, hiki ke hoʻohaʻahaʻa ʻia ka neʻe o ka lanahu i 62% ~ 65%, hiki ke hoʻonui i ka hoʻonui ʻana i ka oxygen.
I mea e hoʻomaʻamaʻa ai i ka hoʻopau ʻana a me ka hoʻoulu ʻana i ke kinoea, loaʻa i ka slurry lanahu-wai kekahi mau koi no ka fineness lanahu. ʻO ka palena kiʻekiʻe o ka nui o ka nui o ka slurry lanahu-wai no ka wahie (ʻo ka nui o ka nui me ka nui o ka hele ʻana ma lalo o 98%) he 300μm, a ʻo ka maʻiʻo o ka liʻiliʻi ma mua o 74μm (200 mesh) ʻaʻole i emi iho ma mua o 75%. ʻOi aku ka liʻiliʻi o ka maikaʻi o ka slurry wai lanahu no ke kinoea ma mua o ka slurry wai lanahu no ka wahie. ʻO ka palena kiʻekiʻe o ka nui o ka ʻāpana i ʻae ʻia e hiki i 1410μm (14 mesh), a ʻo ka ʻike ma lalo o 74μm (200 mesh) ʻo 32% a 60%. I mea e maʻalahi ai ka slurry lanahu-wai e paʻi a hoʻokahe ʻia, loaʻa i ka slurry ka wai lanahu nā koi no ka fluidity.
Ma ka lumi wela a me ka nui o ka shear o 100s, ʻaʻole ʻoi aku ka kiʻekiʻe o ka viscosity ma mua o 1000-1500mPas. ʻO ka slurry wai lanahu i hoʻohana ʻia i ka lawe ʻana i ka pipeline lōʻihi e koi i ka viscosity ʻaʻole i ʻoi aku ma mua o 800mPa·s ma lalo o ka wela haʻahaʻa (ʻo ka mahana haʻahaʻa o ka makahiki no nā paipu kanu ʻia ma lalo o ka honua) a me ka nui o ka shear rate o 10s-1. Eia kekahi, koi ʻia ka slurry wai lanahu i ka viscosity haʻahaʻa i ka wā e kahe ana, kahi kūpono no ka hoʻohana ʻana; i ka wā e pau ai ke kahe ʻana a i loko o kahi kūlana paʻa, hiki iā ia ke hōʻike i ka viscosity kiʻekiʻe no ka mālama maʻalahi.
He mea koʻikoʻi ka paʻa ʻana o ka slurry lanahu-wai i ka wā o ka mālama ʻana a me ka lawe ʻana, no ka mea, ʻo ka slurry lanahu-wai ka hui ʻana o nā pae paʻa a me ka wai, a maʻalahi ka hoʻokaʻawale ʻana i ka paʻa a me ka wai, no laila e koi ʻia ʻaʻohe "ua paʻakikī" i hana ʻia i ka wā mālama a me ka lawe ʻana. ʻO ka mea i kapa ʻia ʻo "hard precipitation" e pili ana i ka ua hiki ʻole ke hoʻihoʻi ʻia i kona kūlana mua ma ka hoʻoulu ʻana i ka slurry wai lanahu. ʻO ka hiki o ka slurry wai lanahu e mālama i ka hana o ka hana ʻole ʻana i ka ua paʻakikī i kapa ʻia ʻo ka "paʻa" o ka slurry wai lanahu. ʻO ka slurry wai lanahu me ke kūpaʻa maikaʻi ʻole e hoʻopilikia koʻikoʻi i ka hana ʻana ke hiki mai ka ua i ka wā o ka mālama ʻana a me ka lawe ʻana.
II. Nānā o ka ʻenehana hoʻomākaukau ʻana i ka wai lanahu
Pono ka slurry-wai lanahu kiʻekiʻe ke koʻikoʻi o ka lanahu, ka nui o ka nui, ka wai maikaʻi, a me ke kūpaʻa maikaʻi e pale aku i ka ua paʻakikī. He mea paʻakikī ke hoʻokō i nā waiwai a pau i luna i ka manawa like, no ka mea, ua kaupalena ʻia kekahi o lākou. No ka laʻana, ʻo ka hoʻonui ʻana i ka ʻike e hoʻonui ai ka viscosity a me ka hoʻohaʻahaʻa ʻana i ka wai. ʻO ka wai maikaʻi a me ka viscosity haʻahaʻa e hōʻino i ka paʻa. No laila, pono e nānā i ka manaʻo i ka manawa maoli. ʻO kaLonnmetermīkini paʻa lima limaLoaʻa ka pololei a hiki i ka 0.003 g / ml, hiki ke hoʻokō i ke ana pono kūpono a hoʻomalu pono i ka nui o ka slurry.
1. E koho pololei i ka Lahu Maka no ka Pulping
Ma waho aʻe o ka hoʻokō ʻana i nā koi o nā mea hoʻohana i lalo, pono e hoʻolohe ka maikaʻi o ka lanahu no ka pulping i kāna mau waiwai pulping - ka paʻakikī o ka pulping. He mea maʻalahi kekahi mau lanahu e hana i ka slurry lanahu-wai kiʻekiʻe ma lalo o nā kūlana maʻamau. No nā lanahu ʻē aʻe, paʻakikī a koi ʻia paha i kahi kaʻina pulping paʻakikī a me ke kumu kūʻai kiʻekiʻe e hana ai i ka slurry lanahu-wai kiʻekiʻe. ʻO nā waiwai pulping o nā mea maka no ka pulping he hopena nui i ka hoʻopukapuka kālā, ke kumukūʻai hana a me ka maikaʻi o ka slurry wai lanahu o ka mea kanu pulping. No laila, pono e hoʻopaʻa ʻia ke kānāwai o ka lanahu pulping waiwai, a ʻo ka lanahu maka no ka pulping pono e koho ʻia e like me nā pono maoli a me nā loina o ka ʻenehana kūpono a me ka hoʻokele waiwai.
2. Ka helu ana
ʻAʻole pono ka slurry lanahu-wai wale i ka nui o ka lanahu e hiki aku ai i ka fineness i ʻōlelo ʻia, akā pono nō hoʻi i kahi puʻupuʻu nui o ka lanahu, i hiki i nā ʻāpana lanahu o nā ʻano like ʻole ke hoʻopiha i kekahi i kekahi, e hōʻemi i nā āpau ma waena o nā ʻāpana lanahu, a hoʻokō i kahi kiʻekiʻe "stacking efficiency". Hiki ke emi i ka nui o ka wai i ho'ohana 'ia, a he mea ma'alahi ka hana 'ana i ka slurry lanahu-wai nui. ʻO kēia ʻenehana i kekahi manawa i kapa ʻia ʻo "grading".
3. Kaʻina hana pulupulu a me nā mea hana
Ma lalo o ka hāʻawi ʻia ʻana o nā hiʻohiʻona nui o ka lanahu a me nā kūlana grindability, pehea e hana ai i ka hāʻawi ʻana i ka nui o ka nui o ka huahana hope o ka slurry lanahu-wai e hoʻokō ai i kahi kiʻekiʻe "stacking efficiency" pono i kahi koho kūpono o nā lako wili a me ka hana pulping.
4. Ke koho ʻana i nā mea hoʻohui hoʻokō
I mea e hiki ai i ka slurry lanahu-wai ke kiʻekiʻe, haʻahaʻa viscosity, a me ka rheology maikaʻi a me ke kūpaʻa, pono e hoʻohana ʻia kahi liʻiliʻi o nā mea kemika, i kapa ʻia ʻo "additives". ʻO nā molekala o ka mea hoʻohui e hana i ka pilina ma waena o nā ʻāpana lanahu a me ka wai, hiki ke hōʻemi i ka viscosity, hoʻomaikaʻi i ka hoʻopuehu ʻana o nā ʻāpana lanahu i ka wai, a hoʻomaikaʻi i ke kūpaʻa o ka slurry wai lanahu. ʻO ka nui o nā mea hoʻohui he 0.5% a 1% o ka nui o ka lanahu. Nui nā ʻano mea hoʻohui, a ʻaʻole paʻa ke kumu a pono e hoʻoholo ʻia ma o ka noiʻi hoʻokolohua.
Ka manawa hoʻouna: Feb-13-2025
