ʻO ka Petroleum coke kahi huahana ʻaila paʻa paʻa paʻa paʻa ʻeleʻele a hina ʻeleʻele paha me ka luster metala a he porous.

ʻO nā ʻāpana coke Petroleum he hydrocarbons, he 90-97% carbon, 1.5-8% hydrogen, nitrogen, chlorine, sulfur a me nā mea metala kaumaha.ʻO ka Petroleum coke kahi huahana o ka pyrolysis o ka ʻaila feedstock i nā ʻāpana coking lohi i nā wela kiʻekiʻe e hana i nā huahana aila māmā.ʻO ka huahana o ka petroleum coke ma kahi o 25-30% o ka aila maka.ʻO kona haʻahaʻa haʻahaʻa calorific e pili ana i ka 1.5-2 mau manawa o ka lanahu, ʻaʻole i ʻoi aku ka nui o ka lehu ma mua o 0.5%, ʻo ka mea volatile e pili ana i 11%, a ua kokoke ka maikaʻi i ka anthracite.E like me ke ʻano a me ke ʻano o ka coke petroleum, hiki ke hoʻokaʻawale ʻia nā huahana coke petroleum i 4 mau ʻano: coke needle, sponge coke, projectile coke a me ka pauka coke:

(1) Needle coke, me ka ʻike pono like me ka nila a me ka fiber texture, ua hoʻohana nui ʻia e like me nā electrodes graphite kiʻekiʻe a kiʻekiʻe-kiʻekiʻe i ka hana kila.No ka mea he koʻikoʻi koʻikoʻi nā koi o ka coke koʻikoʻi e pili ana i ka ʻike sulfur, ka ʻona lehu, ka mea volatile a me ka paʻa maoli, aia nā koi kūikawā no ka ʻenehana hana coke a me nā mea maka.

(2) Sponge coke, me ke kiʻekiʻe kemika reactivity a me ka haʻahaʻa haumia maʻiʻo, ua nui hoʻohana 'ia i loko o ka alumini hooheheeia oihana a me carbon.

(3) Projectile coke a spherical coke: He spherical ma ke ʻano a he 0.6-30mm ke anawaena.Hana ʻia ia mai ka aila koena kiʻekiʻe-sulfur a kiʻekiʻe-asphaltene a hiki ke hoʻohana wale ʻia e like me nā wahie ʻoihana e like me ka hana mana a me ka sima.

(4) Powder coke: Ua hanaʻia e ka fluidized coking process, me nā'āpana maikaʻi (0.1-0.4mm i ke anawaena), kiʻekiʻe volatile content a me ke kiʻekiʻe thermal expansion coefficient, no lailaʻaʻole hiki ke hoʻohana ponoʻia i ka hoʻomākaukau electrode a me kaʻoihana kalapona.

Wahi a nā ʻano sulfur ʻokoʻa, hiki ke hoʻokaʻawale ʻia i ka coke sulfur kiʻekiʻe (ma luna o 3%) a me ka coke haʻahaʻa-sulfur (ma lalo o 3%).Hiki ke hoʻohana ʻia ka coke haʻahaʻa-sulfur e like me ka anode paste a me nā anodes prebaked no nā mea kanu alumini a me nā electrodes graphite no nā mea kanu kila.Ma waena o lākou, hiki ke hoʻohana ʻia ka coke haʻahaʻa haʻahaʻa haʻahaʻa kiʻekiʻe (ma lalo o 0.5%) e hana i nā electrodes graphite a me nā mea hoʻonui kalapona.Hoʻohana pinepine ʻia ka coke sulfur haʻahaʻa o ka maikaʻi maʻamau (ma lalo o 1.5% sulfur) e hana i nā anodes prebaked.Hoʻohana nui ʻia ka coke petroleum haʻahaʻa haʻahaʻa no ka hoʻoheheʻe ʻana i ka silika ʻoihana a me ka hana ʻana i ka anode paste.Hoʻohana mau ʻia ka coke kiʻekiʻe-sulfur ma ke ʻano he wahie i nā mea kanu sima a me nā mea kanu mana.

Calcined Petroleum Coke:

I ka hihia o nā electrodes graphite no ka hana kila a i ʻole anode pastes (melting electrodes) no ka hana alumini a me ka magnesium, i mea e hoʻololi ai i ka petroleum coke (green coke) i nā koi, pono e calcined ka coke ʻōmaʻomaʻo.ʻO ka mahana calcination ma kahi o 1300 ° C, ʻo ke kumu e hoʻoneʻe i nā ʻāpana volatile o ka petroleum coke e like me ka hiki.Ma kēia ala, hiki ke hoʻemi ʻia ka maʻi hydrogen o ka coke petroleum recycled, a hiki ke hoʻomaikaʻi ʻia ke degere graphitization o ka coke petroleum, a laila e hoʻomaikaʻi ai i ka ikaika wela kiʻekiʻe a me ka pale wela o ka electrode graphite, a me ka hoʻomaikaʻi ʻana i ka conductivity uila o ka graphite. electrode.Hoʻohana nui ʻia ka coke calcined i ka hana ʻana i nā electrodes graphite, nā huahana carbon paste, ke one daimana, ka ʻoihana phosphorus meaʻai, ka ʻoihana metallurgical a me ka calcium carbide, i waena o nā electrodes graphite i hoʻohana nui ʻia.Hiki ke hoʻohana pololei ʻia ka coke ʻōmaʻomaʻo no ka calcium carbide e like me ka mea nui o ka calcium carbide me ka ʻole o ka calcination, a e hana i ka silicon carbide a me ka boron carbide e like me nā mea abrasive.Hiki ke hoʻohana pololei ʻia e like me ka coke no ka umu ahi i loko o ka ʻoihana metallurgical a i ʻole carbon brick no ka uhi ʻana i ka paia o ka umu ahi, a hiki ke hoʻohana ʻia e like me ka coke paʻa no ka hoʻolei ʻana.