Pehea e hoʻomaikaʻi ai i ka Cellulose Ether Production?

Kima Chemical Co., Ltd makemake e hoʻolauna i ka hoʻomaikaʻi ʻana i ke kaʻina hana hana cellulose ether a me nā mea hana i nā makahiki he ʻumi i hala, a nānā i nā ʻano like ʻole o ka kneader a me ka coulter reactor i ke kaʻina hana cellulose ether. Me ka hoʻomohala wikiwiki ʻana o ka ʻoihana cellulose ether, ke hoʻololi nei ka mana hana o kahi hoʻonohonoho hoʻokahi o nā mea hana mai nā haneli haneli a i kekahi mau tausani tons. He ʻano hiki ʻole ia no nā mea hana hou e pani i nā mea kahiko.

Hua'ōlelo nui: cellulose ether; mea hana hana; kneader; colter reactor

Ke nānā nei i hope i nā makahiki he ʻumi i hala o ka ʻoihana cellulose ether o Kina, he ʻumi makahiki hanohano ia no ka hoʻomohala ʻana i ka ʻoihana cellulose ether. Ua hiki aku ka mana o ka cellulose ether ma mua o 250,000 tons. I ka makahiki 2007, he 122,000 tons ka puka o CMC, a he 62,000 tons ka puka o ka cellulose ether non-ionic. 10,000 tons cellulose ether (i ka makahiki 1999, Kina'He 25,660 tons ka nui o ka cellulose ether), no ka hapaha o ka honua.'s puka; ua komo maikaʻi kekahi mau ʻoihana kaukani-toni i ka pae o nā ʻoihana 10,000-ton-level; ua piʻi nui nā ʻano huahana , Ua hoʻomaikaʻi maikaʻi ʻia ka maikaʻi o ka huahana; Ma hope o nā mea a pau, ʻo ia ka ʻoi aʻe o ka ʻenehana kaʻina hana a me ka hoʻomaikaʻi hou ʻana i ka pae hana hana. Ke hoʻohālikelike ʻia me ka pae kiʻekiʻe o nā ʻāina ʻē, ua hōʻemi nui ʻia ka hakahaka.

Hōʻike kēia ʻatikala i ka hoʻomohala hou ʻana o ke kaʻina hana cellulose ether home a me ka hoʻomaikaʻi ʻana i nā mea hana i nā makahiki i hala iho nei, a hoʻolauna i ka hana i hana ʻia e Zhejiang Chemical Industry Research Institute i ka noiʻi ʻana a me ka hoʻomohala ʻana i nā lako hana cellulose ether e pili ana i ke kumumanaʻo a me ka noʻonoʻo o ka ʻoihana kemika ʻōmaʻomaʻo. Hana noiʻi ma cellulose ether alkalization etherification reactor.

1. Iecaianoaaiiuo hana a me nā lako o ka home cellulose ether CMC i ka 1990s

Mai ka Shanghai Celluloid Factory i hoʻomohala i ke kaʻina hana wai i ka makahiki 1958, ua hoʻohana ʻia ke kaʻina hana haʻahaʻa haʻahaʻa haʻahaʻa a me nā kaʻina hana ʻē aʻe e hana i ka CMC. Ma ka home, hoʻohana nui ʻia nā kneader no nā hopena etherification. I ka makahiki 1990, he 200-500 tons ka mana hana makahiki o ka mea kanu hoʻokahi CMC o ka hapa nui o nā mea hana, a ʻo nā kumu nui o ka hopena etherification he 1.5m.³ a me 3m³ nā kneader. Eia nō naʻe, ke hoʻohana ʻia ka kneader e like me nā mea hana pane, no ka wikiwiki o ka lima kneading, ka lōʻihi o ka etherification reaction time, ke kiʻekiʻe o nā ʻaoʻao ʻaoʻao, ka haʻahaʻa haʻahaʻa o ka hoʻohana ʻana o ka mea hoʻoheheʻe etherification, a me ka like ʻole o ka like ʻole. etherification reaction substituent distribution, the main reaction conditions. a me ka noiʻi permeation o ka hopena etherification hohonu. No laila, loaʻa i ka kneader kekahi mau palena e like me nā mea hana o ka CMC, a ʻo ia ka bottleneck o ka hoʻomohala ʻana o ka ʻoihana cellulose ether. Hiki ke hōʻuluʻulu ʻia nā hemahema o nā hiʻohiʻona nui o ka hopena etherification i nā makahiki 1990 i ʻekolu mau huaʻōlelo: liʻiliʻi (ka liʻiliʻi o ka mea hoʻokahi), haʻahaʻa (haʻahaʻa hoʻohana haʻahaʻa o ka etherification agent), ʻilihune (etherification reactions replaces ʻO ka like ʻole o ka māhele kumu. ʻilihune). I ka nānā ʻana i nā hemahema i ke ʻano o ka kneader, pono ia e hoʻomohala i kahi mea hana e hiki ai ke wikiwiki i ka hopena etherification o ka mea, a ʻoi aku ka like o ka hāʻawi ʻana i nā mea pani i ka hopena etherification, i ʻoi aku ka nui o ka hoʻohana. ʻoi aku ka kiʻekiʻe o ka etherification agent. I ka hopena o nā makahiki 1990, nui nā ʻoihana cellulose ether home i manaʻolana e noiʻi ʻo Zhejiang Research Institute of Chemical Industry a hoʻomohala i nā lako hana e koi koke ʻia e ka ʻoihana cellulose ether. Ua hoʻomaka ʻo Zhejiang Research Institute of Chemical Industry i ka noiʻi ʻana i ke kaʻina hana hui ʻana i ka pauka a me nā mea hana i ka makahiki 1970, ua hoʻokumu i kahi hui R&D ikaika, a loaʻa nā hopena hauʻoli. Nui nā ʻenehana a me nā mea hana i hāʻawi ʻia e ka Ministry of Chemical Industry a me Zhejiang Science and Technology Progress Award. I ka makahiki 1980, ua hui pū mākou me ka Tianjin Fire Research Institute o ka Ministry of Public Security e hoʻomohala i nā lako kūikawā no ka hana ʻana i ka pauka maloʻo, i lanakila ai ke kolu o ka makana o ka Ministry of Public Security's Science and Technology Progress Award; i ka makahiki 1990, ua noiʻi mākou a ua hoʻomohala i ka ʻenehana hoʻohuihui wai paʻa a me nā lako. Me ka ʻike i nā manaʻo hoʻomohala e hiki mai ana o ka ʻoihana cellulose ether, ua hoʻomaka nā mea noiʻi o ka Zhejiang Provincial Research Institute of Chemical Industry e noiʻi a hoʻomohala i nā lako hana kūikawā no ka cellulose ether.

2. ʻO ke kaʻina hana o ka reactor kūikawā no ka cellulose ether

2.1 Nā hiʻohiʻona o ka hui hui coulter

ʻO ke kumu hana o ka hui hui coulter ʻo ia ma lalo o ka hana o ka ploughshare-shaped agitator, ʻo ka pauka i loko o ka mīkini e haunaele ma ka paia cylinder ma nā ʻaoʻao circumferential a me radial ma ka lima hoʻokahi, a hoʻolei ʻia ka pauka ma nā ʻaoʻao ʻelua. o ka oopalau ma kekahi aoao. ʻO nā alahele o ka neʻe ʻana he kuʻekuʻe a hui pū kekahi me kekahi, no laila e hoʻoulu ai i kahi vortex haunaele a hoʻokumu i kahi ʻano holoʻokoʻa o ka neʻe ākea ʻekolu. Ma muli o ka maikaʻi ʻole o ka wai o ka fibrous reaction raw material, ʻaʻole hiki i nā kumu hoʻohālike ʻē aʻe ke hoʻokele i ka neʻe ʻana o ka circumferential, radial a me axial o ka cellulose i loko o ka cylinder. Ma o ka noiʻi ʻana i ke kaʻina hana CMC a me nā mea hana o ka ʻoihana cellulose ether ma ka home a ma waho, me ka hoʻohana piha ʻana i kāna mau makahiki 30 o nā hopena noiʻi, ua koho mua ʻia ka mixer coulter i nā makahiki 1980 e like me ke kumu kumu no ka hoʻomohala ʻana i ka cellulose. mea hana ether reaction .

2.2 Kaʻina hana hoʻomohala o ka reactor coulter

Ma o ka ho'āʻoʻana o kahi mīkini hoʻokolohua liʻiliʻi, ua loaʻa iā ia ka hopena maikaʻi ma mua o ka kneader. Eia nō naʻe, ke hoʻohana pono ʻia lākou i ka ʻoihana cellulose ether, aia nō nā pilikia penei: 1) I ka hopena etherification, ʻilihune ka wai o ka fibrous reaction raw material, no laila ʻaʻole ʻo ke ʻano o kāna coulter a me ka pahi lele. lawa. E hoʻoneʻe i ka cellulose e neʻe i ka circumferential, radial a me axial kuhikuhi o ka barela, no laila ʻaʻole lawa ka hui ʻana o nā reactants, e hopena i ka hoʻohana haʻahaʻa o nā reactants a me nā huahana liʻiliʻi. 2) Ma muli o ka rigidity maikaʻi ʻole o ke kumu nui i kākoʻo ʻia e nā iwi ʻaoʻao, ua maʻalahi ke kumu o ka eccentricity ma hope o ka hana a me ka pilikia o ka leakage seal; no laila, hoʻokomo maʻalahi ka ea o waho i ka cylinder ma o ka sila shaft a pili i ka hana ʻana i ka ʻawaʻawa i loko o ka cylinder, ka hopena i ka pauka i loko o ka cylinder. Pakele. 3) ʻO kā lākou mau kiwi hoʻokuʻu ʻia he mau kīwī flapper a i ʻole nā ​​​​kiwi disc. He maʻalahi ka mea mua i ka hanu ʻana i waho ma muli o ka maikaʻi ʻole o ka hoʻopaʻa ʻana, ʻoiai ʻo ka mea maʻalahi e mālama i nā mea a hoʻopau i nā reactants. No laila, pono e hoʻoponopono ʻia kēia mau pilikia.

Ua hoʻomaikaʻi ka poʻe noiʻi i ka hoʻolālā ʻana o ka coulter reactor i nā manawa he nui, a hāʻawi iā ia i kekahi mau ʻoihana cellulose ether no ka hoʻohana ʻana i ka hoʻāʻo, a hoʻomaikaʻi mālie i ka hoʻolālā e like me ka manaʻo. Ma ka hoʻololi ʻana i ke ʻano o ke ʻano o nā coulters a me ka hoʻonohonoho ʻana o nā coulters ʻelua e pili ana ma nā ʻaoʻao ʻelua o ke kumu nui, ʻo nā mea hoʻohālikelike ma lalo o ka hana a nā coulters ʻaʻole wale i ka turbulence i nā kuhikuhi circumferential a me radial ma ka paia o loko o ka cylinder, akā. ʻO Splash ma ka ʻaoʻao maʻamau o nā ʻaoʻao ʻelua o ka coulter, no laila ua hui pū ʻia nā reactants, a ʻo ka alkaliization a me ka etherification reactions i hoʻopau ʻia i ke kaʻina hui ʻana ua piha, ʻoi aku ka kiʻekiʻe o ka hoʻohana ʻana o nā reactants, wikiwiki ka wikiwiki a me ka emi ka ikehu . Eia kekahi, ua hoʻopaʻa ʻia nā sila a me nā noho halihali ma nā ʻaoʻao ʻelua o ka cylinder i ka pā hope o ka bracket ma o ka flange e hoʻonui ai i ka rigidity o ke kumu nui, no laila ua paʻa ka hana. I ka manawa like, hiki ke hōʻoia ʻia ka hopena sealing o ka shaft seal no ka mea ʻaʻole e kulou a deform ka pahu nui, a ʻaʻole e pakele ka pauka i loko o ka cylinder. Ma ka hoʻololiʻana i keʻano o ka pahu hoʻokuʻu a me ka hoʻonuiʻana i ke anawaena o ka pahu hoʻokuʻu,ʻaʻole hiki iā ia ke pale pono i ka paʻaʻana o nā mea i loko o ka pahu hoʻokuʻu, akā, e pale pū i ka nalowale o ka pauka i ka wā o ka pauʻana, no laila e ho'ēmi pono i ka nalowale o ka hopena. huahana. He kūpono ke ʻano o ka reactor hou. ʻAʻole hiki iā ia ke hāʻawi i kahi hoʻomākaukau paʻa a hilinaʻi hoʻi no ka cellulose ether CMC, akā pale maikaʻi hoʻi i ka pauka i loko o ka cylinder mai ka pakele ʻana ma o ka hoʻomaikaʻi ʻana i ka ea o ka sila a me ka pahu hoʻokuʻu. Pili kaiapuni, ʻike i ka manaʻo hoʻolālā o ka ʻoihana kemika ʻōmaʻomaʻo.

2.3 Hoʻomohala ʻana i ka reactor coulter

Ma muli o nā hemahema o nā kneader liʻiliʻi, haʻahaʻa, a maikaʻi ʻole, ua komo ka coulter reactor i nā mea kanu hana CMC home, a ʻo nā huahana he ʻeono mau hiʻohiʻona o 4m.³, 6m³, 8m³, 10m³, 15m³, a me 26m³. I ka makahiki 2007, ua lanakila ka coulter reactor i ka ʻae ʻia ʻana o ka hoʻohālike hoʻohālike aupuni (helu hoʻolaha patent: CN200957344). Ma hope o 2007, ua hoʻomohala ʻia kahi reactor kūikawā no ka non-ionic cellulose ether production line (e like me MC/HPMC). I kēia manawa, hoʻohana nui ka hana home o CMC i ke ʻano solvent.

Wahi a nā manaʻo o kēia manawa mai nā mea hana cellulose ether, hiki i ka hoʻohana ʻana i nā reactors coulter ke hōʻemi i ka hoʻohana ʻana i ka solvent e 20% a i 30%, a me ka hoʻonui ʻana i nā lako hana, hiki ke hōʻemi hou i ka hoʻohana ʻana i ka solvent. No ka mea hiki i ka coulter reactor ke hiki i 15-26m³, 'oi aku ka maika'i o ka ho'ohui like 'ana o ka pu'unaue pani i loko o ka hopena etherification ma mua o ko ka kneader.

3. Nā lako hana ʻē aʻe o cellulose ether

I kēia mau makahiki i hala iho nei, ʻoiai e hoʻomohala ana i ka cellulose ether alkalization a me ka etherification reactors, ke kūkulu ʻia nei nā ʻano hoʻohālike ʻē aʻe.

Mea hoʻokiʻekiʻe ea (helu hoʻolaha patent: CN200955897). Ma ke kaʻina hana hoʻoheheʻe CMC, ua hoʻohana nui ʻia ka rake vacuum dryer i ka hoʻihoʻi ʻana o ka solvent a me ka hoʻomaloʻo ʻana i ka wā ma mua, akā hiki ke hoʻohana wale ʻia ka rake vacuum dryer, ʻoiai e hiki ke hoʻomaopopo i ka hana hoʻomau. Hoʻopiʻi ka mea hoʻokiʻekiʻe ea i ka mea CMC ma o ka hoʻololi wikiwiki ʻana o nā coulters a me nā pahi lele i loko o ka cylinder e hoʻonui i ka ʻili o ka wela, a e hoʻoheheʻe i ka mahu i loko o ka cylinder e hoʻoheheʻe piha i ka ethanol mai ka mea CMC a hoʻomaʻamaʻa i ka hoʻihoʻi ʻana, a laila e hoʻemi i ke kumukūʻai hana. CMC a mālama i nā kumuwaiwai ethanol, a hoʻopau i ka hana o ka cellulose ether maloʻo kaʻina i ka manawa like. Loaʻa i ka huahana nā hiʻohiʻona ʻelua o 6.2m³a me 8m³.

Granulator (helu hoʻolaha patent: CN200957347). I ke kaʻina hana o ka cellulose ether ma ke ʻano solvent, ua hoʻohana nui ʻia ka twin-screw extrusion granulator i ka wā ma mua e granulate i ka mea sodium carboxymethyl cellulose ma hope o ka hopena etherification, holoi a maloʻo. ʻAʻole hiki i ka ZLH type cellulose ether granulator ke hoʻomau mau e like me ka twin-screw extrusion granulator i kēia manawa, akā hiki ke hoʻopau mau i nā mea ma ka hānai ʻana i ka ea i loko o ka cylinder a me ka wai hoʻoluʻu i loko o ka ʻaʻahu. E hoʻololi i ka wela wela, a laila e hoʻomaikaʻi ai i ka maikaʻi o ka granulation, a me ka mālama ʻana i ka uila, a hiki ke hoʻonui i ka helu huahana huahana ma ka hoʻonui ʻana i ka wikiwiki spindle, a hiki ke hoʻololi i ke kiʻekiʻe o ka pae waiwai e like me nā koi kaʻina. Loaʻa i ka huahana ʻelua mau hiʻohiʻona o 3.2m³a me 4m³.

Mea hui ea (helu hoʻolaha patent: CN200939372). Hoʻouna ʻo MQH type airflow mixer i ka ea i hoʻopaʻa ʻia i loko o ke keʻena hui ʻana ma o ka nozzle ma ke poʻo hui ʻana, a piʻi koke ka mea i ka spirally ma ka paia cylinder me ka ea i hoʻopili ʻia e hana i kahi ʻano hui ʻana. Ma hope o kekahi mau puʻupuʻu puʻupuʻu a hoʻomaha manawa, hiki ke ʻike ʻia ka hui ʻana o nā mea i loko o ka leo piha. Hoʻohui ʻia nā ʻokoʻa ma waena o nā ʻāpana like ʻole o ka huahana ma o ka hui ʻana. I kēia manawa, ʻelima ʻano huahana: 15m³, 30m³, 50m³, 80m³, a me 100m³.

ʻOiai ke hōʻemi hou ʻia nei ka ʻokoʻa ma waena o nā lako hana cellulose ether o koʻu ʻāina a me nā pae kiʻekiʻe o nā ʻāina ʻē, pono ia e hoʻomaikaʻi hou i ka pae kaʻina hana a hoʻomaikaʻi hou aku e hoʻoponopono i nā pilikia i kūpono ʻole me nā lako hana o kēia manawa.

4. Nānā

ʻO kaʻoihana cellulose ether o koʻu'āina e hoʻoikaika ikaika nei i ka hoʻolālā a me ka hanaʻana i nā mea hana hou, a me ka hoʻohuiʻana i nāʻano o nā mea hana e hoʻomau mau i ka hana. Ua hoʻomaka nā mea hana a me nā mea hana hana e hoʻomohala a hoʻohana i nā mea hana hou. Hōʻike kēia mau mea i ka holomua o ka ʻoihana cellulose ether o koʻu ʻāina. , he hopena koʻikoʻi kēia loulou i ka hoʻomohala ʻana i ka ʻoihana. I nā makahiki i hala iho nei, ʻo ka ʻoihana cellulose ether o koʻu ʻāina, e pili ana i ka ʻenehana me nā hiʻohiʻona Kina, ua komo i ka ʻike holomua honua, hoʻolauna i nā mea ʻē aʻe, a i ʻole hoʻohana piha i nā lako hale e hoʻopau ai i ka hoʻololi ʻana mai ka "palapala, palaka, ʻilihune" ʻO ka hoʻololi o ka mechanization a me ka automation e hoʻokō i kahi lele nui i ka hiki ke hana, ka maikaʻi a me ka pono i ka ʻoihana cellulose ether ua lilo i pahuhopu maʻamau o nā mea hana cellulose ether o koʻu ʻāina.