ʻO nā umu ahi Bell-type

Overview:
Hoʻohana nui ʻia nā umu Bell-type no ka hoʻopili annealing a me ka mālama ʻana i ka wela, no laila he mau ʻāpana mahana wela like ʻole. Noho ka mahana ma waena o 650 a 1100 ℃ ka hapanui, a hoʻololi ʻia e ka manawa i kuhikuhi ʻia i ka ʻōnaehana hoʻomehana. Ma muli o ka hoʻouka ʻana o nā umu kani-bele, aia ʻelua mau ʻano: ka umu ahi ʻano bele a me ka umu bele a puni. ʻO nā kumu wela o nā umu ahi bele ka hapanui, a ukali ʻia e ka uila a me ka aila māmā. ʻO ka maʻamau, ʻo nā umu ʻano bele he ʻekolu mau ʻāpana: kahi uhi waho, kahi uhi o loko, a me kahi kapuahi. Hoʻonohonoho pinepine ʻia ka mea kuni i ka uhi o waho i insulated me kahi papa mahana, ʻoiai e kau ʻia nā mea hana i ka uhi o loko no ka hoʻomehana a me ke anuanu.

ʻO nā kapuahi ʻano Bell he ea paʻa maikaʻi, hoʻohaʻahaʻa wela wela, a me ka pono hoʻomehana wela kiʻekiʻe. Eia kekahi, ʻaʻole lākou e pono i kahi puka umu a me kahi ʻano hāpai a me nā ʻano hoʻoili mīkini like ʻole.
ʻElua mau koi koʻikoʻi no nā mea e uhi ana ka umu ahi he māmā māmā a me ka maikaʻi o ka ikehu o nā uhi hoʻomehana.

Nā pilikia maʻamau me ka refacto māmā māmāry pōhaku lepo a i ʻole lightweight castable structures nā:

1. ʻO nā mea hana hoʻopili me kahi umekaumaha kikoʻī nui (ʻo ka nui o nā pōhaku uila māmā maʻamau he 600KG / m3 a ʻoi paha; ʻoi aku ka 1000 KG / m3 a ʻoi aku paha i ka lightweight) e koi i kahi ukana nui ma ka hao kila o ka uhi umu ahi, no laila ʻo ka ʻai ʻana o ka hana kila a me ka hoʻokomo kālā i ka hoʻonui ʻana i ka umu ahi e hoʻonui.

2. Hoʻopili ka uhi waho nui i ka hiki ke hāpai a me ka papahele o nā papa hana.

3. Hoʻohana ʻia ka umu ahi bele ma nā mahana wela like ʻole, a ʻo nā pōhaku uila a i ʻole ka light lightable hiki ke loaʻa i kahi wela wela nui, kahi conductivity wela kiʻekiʻe, a me ka hoʻohana nui ʻana o ka ikehu.

Eia nō naʻe, loaʻa i nā huahana pulupulu refractory CCEWOOL kahi haʻahaʻa o ka conductivity thermal, hoʻahu haʻahaʻa wela, a me ka haʻahaʻa haʻahaʻa haʻahaʻa, ʻo ia nā kumu nui no kā lākou noi ākea i nā uhi hoʻomehana. Penei nā ʻano:

1. ʻO kahi ākea o ka mahana hana a me nā ʻano noi like ʻole
Me ka hoʻomohala ʻana o ka hana ʻana a me ka ʻenehana CCEWOOL, hana nā huahana CCEWOOL pālolo i ka serialization a me ka hoʻohana ʻana. I ke ʻano o ka mahana, hiki i nā huahana ke hoʻokō i nā koina o nā mahana like ʻole mai 600 ℃ a 1500 ℃. E pili ana i ka morphology, ua hoʻomohala iki nā huahana i nā ʻano hana ʻelua a i ʻole nā ​​huahana hana hohonu mai nā pulupulu kuʻuna, nā kapa moe, nā huahana i nā modula fiber, nā papa, nā ʻāpana ʻano kūikawā, ka pepa, nā lole lole a pēlā aku. Hiki iā lākou ke hoʻokō piha i nā koina o nā umu ʻenehana no nā huahana puluniu pālolo i nā ʻoihana like ʻole.
2. Ka liʻiliʻi liʻiliʻi:
ʻO ka nui o nā huahana puluniu pālolo he 96 ~ 160kg / m3, kahi e pili ana i 1/3 o nā pōhaku uila māmā a me 1/5 o ka castable refractory lightable castable. No ka umu ahi hou i hoʻolālā ʻia, ʻaʻole hiki i ka hoʻohana ʻana i nā huahana puluniu ke hoʻōla kila wale nō, akā e hana maʻalahi hoʻi i ka hoʻouka ʻana / hoʻoiho a me ka halihali ʻana, e hoʻoikaika ana i ka holomua o ka ʻenehana ʻenehana umu.
3. Ka liʻiliʻi o ka wela a me ka mālama wela:
Hoʻohālikelike ʻia me nā pōhaku lepo paʻa a me nā pōhaku hoʻoluʻu, ʻoi aku ka haʻahaʻa o ka huahana puluniu pālolo, ma kahi o 1 / 14-1 / 13 o nā pōhaku uila paʻa a me 1 / 7-1 / 6 o nā pōhaku hoʻohaunaele. No ka umu ahi bele e hana ʻia e intermittently, hiki ke mālama ʻia kahi nui o nā wahie pili ʻole i ka hana.
4. Kūkulu maʻalahi, wā pōkole
E like me nā pale momona a me nā modula i ka lahilahi maikaʻi, hiki ke wānana ʻia ka nui o ka compression, a ʻaʻohe pono e haʻalele i nā hui hoʻonui i ka wā o ke kūkulu. ʻO ka hopena, maʻalahi a maʻalahi ka hana, hiki ke hoʻopau ʻia e nā limahana mākaukau maʻamau.
5. ʻO ka hana me ka ʻole o ka umu
Ma ka ʻae ʻana i ka uhi piha piha i ka fiber, hiki ke wela koke nā umu i ke ana wela inā ʻaʻole i kaupalena ʻia e nā mea hao ʻē aʻe, kahi e hoʻomaikaʻi maikaʻi ai i ka hoʻohana pono ʻana o nā kapuahi ʻoihana a hoʻemi i ka hoʻohana ʻole ʻana o ka wahie e pili ana i ka hana.
6. Haʻaha wai wela haʻahaʻa loa
ʻO ka fiber Ceramic kahi hui pū o nā olonā me ke anawaena o 3-5um, no laila he haʻahaʻa haʻahaʻa haʻahaʻa. ʻO kahi laʻana, ke hiki i kahi pale momona alumini kiʻekiʻe me kahi kiʻekiʻena 128kg / m3 a hiki i 1000 ℃ ma kahi wela, ʻo 0.22 (W / MK) wale nō ke kōpena hoʻoliʻiliʻi wela.
7. ʻO ke kūpaʻa kemika maikaʻi a me ke kūpaʻa i ke kahe ʻana o ka airflow:
Hiki ke hoʻopau wale ʻia ka pulupulu keramika i ka waikawa phosphoric, ka waikawa hydrofluoric, a me ka alkali wela, a kūpaʻa ia i nā pāpāho ʻino. Hoʻohui ʻia, hana ʻia nā modula o ka pālolo pālolo e ka pelu mau ʻana i nā kapa pālolo pālolo ma kekahi lākiō compression. Ma hope o ka mālama ʻia ʻana o ka ʻilikai, hiki ke piʻi i ka makani erosion 30m / s.