ʻO BDO, ka mea i ʻike ʻia ʻo 1,4-butanediol, he mea koʻikoʻi koʻikoʻi a me nā mea kemika maikaʻi. Hiki ke hoʻomākaukau ʻia ka BDO ma o ke ʻano acetylene aldehyde, maleic anhydride method, propylene alcohol method, a me butadiene method. ʻO ke ala acetylene aldehyde ke ʻano hana ʻoihana nui no ka hoʻomākaukau ʻana i ka BDO ma muli o kāna kumukūʻai a me nā pono hana. Hoʻopili mua ʻia ka Acetylene a me ka formaldehyde e hana i ka 1,4-butynediol (BYD), kahi i hoʻohui ʻia i ka hydrogen e loaʻa ai ka BDO.
Ma lalo o ke kaomi kiʻekiʻe (13.8 ~ 27.6 MPa) a me nā kūlana o 250 ~ 350 ℃, hana ka acetylene me ka formaldehyde i ke alo o kahi catalyst (ʻo ia ka cuprous acetylene a me ka bismuth ma ke kākoʻo silica), a laila hydrogenated ka 1,4-butynediol waena. i BDO me ka hoʻohana ʻana i kahi mea hoʻoheheʻe nickel Raney. ʻO ke ʻano o ke ʻano maʻamau ʻaʻole pono e hoʻokaʻawale ʻia ka catalyst a me ka huahana, a haʻahaʻa ke kumukūʻai hana. Eia nō naʻe, loaʻa i ka acetylene kahi kaomi hapa kiʻekiʻe a me ka pilikia o ka pahū. ʻO ke kumu palekana o ka hoʻolālā reactor he kiʻekiʻe e like me 12-20 mau manawa, a he nui a he kumukūʻai nā mea hana, e hopena i ka hoʻolimalima kiʻekiʻe; E polymerize ʻo Acetylene e hana i ka polyacetylene, ka mea e hoʻopau ai i ka catalyst a poloka i ka pipeline, e hopena i ka pōkole hana a hoʻemi ʻia ka puka.
I ka pane ʻana i nā hemahema a me nā hemahema o nā ʻano kuʻuna, ua hoʻomaikaʻi ʻia nā mea hana a me nā catalysts o ka ʻōnaehana hopena e hōʻemi i ke kaomi hapa o ka acetylene i loko o ka ʻōnaehana hopena. Ua hoʻohana nui ʻia kēia ʻano hana ma ka home a ma ka honua. I ka manawa like, lawe ʻia ka synthesis o BYD me ka hoʻohana ʻana i kahi moena sludge a i ʻole kahi moena hoʻomaha. ʻO ke ʻano acetylene aldehyde BYD hydrogenation e hana i ka BDO, a i kēia manawa ʻo nā kaʻina ISP a me INVISTA ka mea i hoʻohana nui ʻia ma Kina.
① Hoʻohui i ka butynediol mai ka acetylene a me ka formaldehyde me ka hoʻohana ʻana i ka copper carbonate catalyst
Hoʻohana ʻia i ka ʻāpana kemika acetylene o ke kaʻina BDO ma INVIDIA, hoʻopili ka formaldehyde me ka acetylene e hana ai i ka 1,4-butynediol ma lalo o ka hana a ka copper carbonate catalyst. ʻO ka mahana hopena he 83-94 ℃, a ʻo ke kaomi ʻana he 25-40 kPa. He ʻano ʻōmaʻomaʻo ko ka catalyst.
② Catalyst no ka hydrogenation o butynediol i BDO
ʻO ka pauku hydrogenation o ke kaʻina hana ʻelua kiʻekiʻe-press paʻa moe reactors i hoʻohui ʻia i ka moʻo, me 99% o ka hydrogenation reactions i hoʻopau ʻia i ka reactor mua. ʻO ka mua a me ka lua hydrogenation catalysts ua ho'ā 'ia nickel alumini alumini.
ʻO kahi moe paʻa Renee nickel he nickel aluminum alloy block me ka nui o nā ʻāpana mai ka 2-10mm, ka ikaika kiʻekiʻe, ke kūpaʻa ʻaʻahu maikaʻi, ka ʻāpana kikoʻī nui, ka paʻa catalyst maikaʻi, a me ke ola lawelawe lōʻihi.
He keʻokeʻo keʻokeʻo keʻokeʻo ʻo Raney nickel i hoʻopaʻa ʻole ʻia, a ma hope o ka hoʻopaʻa ʻana o ka leaching alkali wai, lilo lākou i ʻeleʻele a ʻeleʻele hina paha, i hoʻohana nui ʻia i nā reactors moe.
① Kākoʻo ʻia ke keleawe no ka synthesis o butynediol mai acetylene a me formaldehyde
Ma lalo o ka hana a ka copper bismuth catalyst i kākoʻo ʻia, hana ʻia ka formaldehyde me ka acetylene e hoʻohua ai i ka 1,4-butynediol, ma kahi mahana hopena o 92-100 ℃ a me ke kaomi o 85-106 kPa. Hōʻike ʻia ka catalyst me he pauka ʻeleʻele.
② Catalyst no ka hydrogenation o butynediol i BDO
Hoʻohana ke kaʻina hana ISP i ʻelua mau pae o ka hydrogenation. ʻO ka hana mua e hoʻohana ana i ka pauka nickel alumini alumini e like me ka catalyst, a me ka hydrogenation haʻahaʻa haʻahaʻa e hoʻohuli iā BYD i BED a me BDO. Ma hope o ka hoʻokaʻawale ʻana, ʻo ka hana ʻelua ka hydrogenation kiʻekiʻe me ka hoʻohana ʻana i ka nickel i hoʻouka ʻia ma ke ʻano he catalyst e hoʻohuli i ka BED i BDO.
ʻO ka mea hoʻoheheʻe hydrogenation kumu mua: ka mea hoʻoheheʻe nickel Raney
ʻO ka mea hoʻoheheʻe hydrogenation mua: ʻO ka pauka Raney nickel catalyst. Hoʻohana nui ʻia kēia catalyst ma ka ʻāpana hydrogenation haʻahaʻa haʻahaʻa o ke kaʻina ISP, no ka hoʻomākaukau ʻana i nā huahana BDO. Loaʻa iā ia nā hiʻohiʻona o ka hana kiʻekiʻe, ke koho maikaʻi, ka helu hoʻololi, a me ka wikiwiki hoʻonohonoho. ʻO nā mea nui he nickel, aluminika, a me molybdenum.
ʻO ka mea hoʻoheheʻe hydrogenation kumu mua: ka pauka nickel aluminum alloy hydrogenation catalyst
Pono ka catalyst i ka hana kiʻekiʻe, ikaika kiʻekiʻe, kiʻekiʻe o ka hoʻololi ʻana o 1,4-butynediol, a me ka liʻiliʻi o nā huahana.
ʻO ka lua hydrogenation catalyst
He mea kākoʻo kākoʻo ia me ka alumina e like me ka mea lawe a me ka nickel a me ke keleawe e like me nā mea hana. Mālama ʻia ka mokuʻāina i hoʻemi ʻia i ka wai. ʻO ka catalyst ka ikaika mechanical kiʻekiʻe, haʻahaʻa haʻahaʻa haʻahaʻa, paʻa kemika maikaʻi, a maʻalahi ke hoʻoikaika. Nā ʻāpana ʻeleʻele me ke ʻano o ka clover.
Noi hihia o Catalysts
Hoʻohana ʻia no BYD e hana i ka BDO ma o ka hydrogenation catalyst, i hoʻopili ʻia i kahi ʻāpana BDO 100000 tons. ʻElua pūʻulu o nā reactors moe paʻa e hana like ana, ʻo JHG-20308 kekahi, a ʻo ka catalyst lawe ʻia mai kekahi.
Nānā: I ka wā o ka nānā ʻana i ka pauka maikaʻi, ua ʻike ʻia ʻo ka JHG-20308 paʻa moena hoʻoheheʻe i hoʻohua mai i ka pauka liʻiliʻi ma mua o ka catalyst i lawe ʻia mai.
Hoʻoulu: Catalyst Activation Ka Manaʻo: Ua like nā kūlana hoʻoulu o nā mea hoʻoheheʻe ʻelua. Mai ka ʻikepili, ʻo ka helu dealumination, ka ʻokoʻa wela o ka inlet a me ka puka waho, a me ka hoʻoulu ʻana i ka hoʻokuʻu ʻana i ka wela o ka huila i kēlā me kēia pae o ka hoʻāla ʻana.
Mahana: ʻAʻole ʻokoʻa ka ʻokoʻa o ka mahana hopena o JHG-20308 catalyst mai ka catalyst i lawe ʻia mai, akā e like me nā helu ana wela, ʻoi aku ka maikaʻi o ka hana ʻana o JHG-20308 catalyst ma mua o ka catalyst i lawe ʻia mai.
ʻO nā haumia: Mai ka ʻike ʻike o ka hoʻonā BDO crude i ka wā mua o ka hopena, ua emi iki ka JHG-20308 i nā haumia i loko o ka huahana i hoʻohālikelike ʻia me nā catalysts i lawe ʻia, ʻike nui ʻia i loko o ka ʻike o ka n-butanol a me HBA.
Ma ke ʻano holoʻokoʻa, paʻa ka hana a JHG-20308 catalyst, me ka ʻike ʻole o nā huahana kiʻekiʻe, a ʻoi aku ka like o kāna hana ma mua o nā catalysts i lawe ʻia mai.
Iecaianoaaiiuo kaʻina hana o ka moe paʻa nickel alumina catalyst
(1) Hoʻoheheʻe ʻia: Hoʻoheheʻe ʻia ka nickel alumini alloy i ka wela kiʻekiʻe a laila hoʻolei ʻia i ke ʻano.
(2) Hoʻopiʻi: Hoʻopiʻiʻia nā'āpana'āpana i loko o nā'āpana liʻiliʻi ma o nā mea hana.
(3) Nānā: Ke nānā ʻana i nā ʻāpana me ka nui o nā ʻāpana kūpono.
(4) Hoʻoulu: E hoʻomalu i kahi ʻike a me ka kahe kahe o ka wai alkali e hoʻāla i nā ʻāpana i ka hale kiaʻi.
(5) Nā hōʻailona nānā: ka ʻike metala, ka puʻupuʻu nui o ka ʻāpana, ka ikaika compressive crushing, bulk density, etc.
Ka manawa hoʻouna: Sep-11-2023
