ʻO ka Petroleum coke kahi huahana paʻa paʻa i loaʻa mai ke koena ʻaila a me ka asphalt petroleum ma ka coking. He ʻeleʻele a porous ka waihoʻoluʻu, ʻo ke kalapona ka mea nui, a he haʻahaʻa loa ka ʻike lehu, ma lalo o 0.5%. ʻO ka Petroleum coke kahi ʻano kalapona graphitized maʻalahi, ʻo ka petroleum coke ka nui o ka hoʻohana ʻana i ka ʻoihana kemika, metallurgy a me nā ʻoihana ʻē aʻe, a ʻo ia ka mea kumu nui no ka hana ʻana i nā huahana graphite artificial a me nā huahana carbon carbon electrolytic.
Wahi a ka wela wela, hiki ke hoʻokaʻawale ʻia ka petroleum coke i ʻelua ʻano: coke maka a me ka coke calcined. ʻO ka coke petroleum mua i loaʻa mai ka coking hoʻopaneʻe i loaʻa i ka nui o nā mea maʻamau a he haʻahaʻa ka ikaika mechanical. Loaʻa ka coke calcined ma ka calcination. ʻO ka hapa nui o nā hale hoʻoheheʻe ma Kina e hana wale i ka coke maka, a ʻo ka hapa nui o nā hana calcination e hana ʻia ma nā mea kanu kalapona.
Hiki ke hoʻokaʻawale ʻia ka ʻaila coke i ka coke sulfur kiʻekiʻe (ʻoi aku ma mua o 1.5% sulfur), coke sulfur medium (loaʻa ka 0.5% -1.5% sulfur), a me ka coke sulfur haʻahaʻa (ʻoi aku ka liʻiliʻi o ka 0.5% sulfur) ʻekolu ʻano, graphite electrodes a me nā huahana graphite graphite ʻē aʻe e hoʻohana haʻahaʻa.
ʻO Needle coke kahi ʻano coke kūlana kiʻekiʻe me ka ʻike fibrous kikokikona, ʻoi aku ka haʻahaʻa haʻahaʻa haʻahaʻa hoʻonui hoʻonui a me ka maʻalahi graphitization. I ka wā e haki ai ka poloka coke, hiki ke hoʻokaʻawale ʻia i loko o nā ʻāpana liʻiliʻi e like me ke ʻano (ʻoi aku ka nui o ka ratio ma luna o 1.75), a hiki ke ʻike ʻia ke ʻano fibrous anisotropic ma lalo o ka microscope māmā polarized, no laila ua kapa ʻia ʻo needle coke.
ʻO ke kino a me ka mechanical anisotropy o ka nila coke he mea maopopo loa, a he maikaʻi ka uila a me ka thermal conductivity e like me ke axis lōʻihi o nā ʻāpana, a he haʻahaʻa ka helu hoʻonui wela. I ka wā hoʻoheheʻe extrusion, ua hoʻonohonoho ʻia ka axis lōʻihi o ka hapa nui o nā ʻāpana e like me ke kuhikuhi extrusion. No laila, ʻo ka nila coke ke kī kumu no ka hana ʻana i nā electrodes graphite kiʻekiʻe a i ʻole ultra-kiʻekiʻe, he haʻahaʻa resistivity, liʻiliʻi coefficient o ka hoʻonui wela a me ke kūpaʻa haʻalulu maikaʻi.
Hoʻokaʻawale ʻia ʻo Needle coke i loko o ka coke nilala aila i hana ʻia mai ke koena o ka ʻaila a me ka coke needle lanahu i hana ʻia mai ka asphalt lanahu hoʻomaʻemaʻe.
ʻO ke kola tar pitch kekahi o nā huahana nui o ka hana ʻana i ka hohonu. He hui ia o nā ʻano hydrocarbons, ʻeleʻele kiʻekiʻe viscosity semi-solid a paʻa paha i ka lumi wela, me ka ʻole o ka hoʻoheheʻe paʻa, hoʻoheheʻe ʻia ma hope o ka wela, a laila hoʻoheheʻe ʻia, me ka density o 1.25-1.35g/cm3. E like me kona softening wahi i maheleia i haʻahaʻa wela, haʻahaʻa a me ke kiʻekiʻe wela asphalt ekolu ano. ʻO ka hua o ka asphalt wela waena he 54-56% o ka pā lanahu. He paʻakikī loa ka hoʻohui ʻana o ka lanahu pitch, e pili ana i ka waiwai o ka coal tar a me ka ʻike o nā heteroatoms, a pili pū kekahi i ka ʻōnaehana coking process a me nā kūlana hana o ka coal tar. Nui nā ʻōlelo kuhikuhi e hōʻike i nā waiwai o ka pitch lanahu, e like me ka asphalt softening point, toluene insoluble (TI), quinoline insoluble (QI), coking value a me nā waiwai rheological o ka lanahu pitch.
Hoʻohana ʻia ka lanahu pitch ma ke ʻano he binder a impregnating agent i ka ʻoihana kalapona, a he mana nui kona mau waiwai i ke kaʻina hana a me ka maikaʻi o ka huahana o nā huahana kalapona. Hoʻohana maʻamau ʻo Binder asphalt i ka wela maʻamau a i ʻole ka wela wela i hoʻololi ʻia me ka wahi palupalu haʻahaʻa, ka waiwai coking kiʻekiʻe a me ka resin beta kiʻekiʻe, a pono e hoʻohana ka mea hana impregnation i ka asphalt wela waena me kahi haʻahaʻa haʻahaʻa, QI haʻahaʻa a me ka rheology maikaʻi.
Ka manawa hoʻouna: Feb-07-2025