Kedu ka esi emeziwanye mmepụta cellulose ether?

Ụgwọ nke ụlọ ọrụ Kima Chemical Co., Ltd ga-amasị ewebata nkwalite nke cellulose ether mmepụta usoro na akụrụngwa n'ime afọ iri gara aga, na-enyocha ihe dị iche iche e ji mara kneader na coulter reactor na cellulose ether mmepụta usoro. Site na mmepe ngwa ngwa nke ụlọ ọrụ ether cellulose, ikike mmepụta nke otu ihe eji eme ihe na-agbanwe site na ọtụtụ narị tọn ruo ọtụtụ puku tọn. Ọ bụ ihe a na-apụghị izere ezere maka akụrụngwa ọhụrụ iji dochie akụrụngwa ochie.

Isi okwu: cellulose ether; akụrụngwa mmepụta; igwakorita; onye na-ahụ maka ihe ọkụkụ

N'ileghachi anya azụ na afọ iri gara aga nke ụlọ ọrụ cellulose ether nke China, ọ bụ afọ iri dị ebube maka mmepe nke ụlọ ọrụ ether cellulose. Ike mmepụta nke cellulose ether erutela ihe karịrị tọn 250,000. Na 2007, mmepụta nke CMC bụ 122,000 tọn, na mmepụta nke cellulose ether na-abụghị ionic bụ 62,000 tọn. 10,000 tọn cellulose ether (na 1999, China'mkpokọta cellulose ether mmepụta bụ naanị tọn 25,660), na-aza ihe karịrị otu ụzọ n'ụzọ anọ nke ụwa.'s mmepụta; ọnụ ọgụgụ nke puku-ton-larịị ụlọ ọrụ abanyela nke ọma n'ọkwa nke ụlọ ọrụ 10,000-ton-level; Ụdị ngwaahịa dị iche iche abawanyela nke ukwuu, a na-emeziwanye àgwà ngwaahịa ahụ nke ọma; n'azụ ihe a niile bụ ntozu oke nke teknụzụ usoro na mmụba nke ọkwa akụrụngwa mmepụta. Tụnyere ọkwa dị elu nke mba ofesi, ebelatala ọdịiche ahụ nke ukwuu.

Isiokwu a na-ewebata ọhụrụ mmepe nke ụlọ cellulose ether mmepụta usoro na akụrụngwa mma na-adịbeghị anya, na-ewebata ọrụ nke Zhejiang Chemical Industry Research Institute mere na-eme nnyocha na-emepe emepe cellulose ether mmepụta ngwá dabeere na tiori na iche echiche nke green chemical ụlọ ọrụ. Ọrụ nyocha na cellulose ether alkalization etherification reactor.

1. Teknụzụ mmepụta na akụrụngwa nke cellulose ether CMC nke ụlọ na 1990s

Ebe ọ bụ na ụlọ ọrụ mmepụta ihe nke Shanghai Celluloid mepụtara usoro mmiri-ọkara na 1958, a na-eji usoro ihe mgbaze na-emepụta ihe na-emepụta ihe ndị ọzọ na-emepụta CMC. N'ime ụlọ, a na-eji kneaders eme ihe maka mmeghachi omume etherification. N'afọ ndị 1990, ikike mmepụta kwa afọ nke otu ụlọ ọrụ CMC nke ọtụtụ ndị na-emepụta ihe bụ tọn 200-500, na ụdị mmeghachi omume nke etherification bụ 1.5m.³ na 3m³ kneaders. Otú ọ dị, mgbe a na-eji kneader eme ihe dị ka ngwá ọrụ mmeghachi omume, n'ihi na ọ na-agba ọsọ ngwa ngwa nke ogwe aka ahụ, ogologo oge mmeghachi omume etherification, ọnụ ọgụgụ dị elu nke mmeghachi omume n'akụkụ, ọnụ ọgụgụ dị ala nke onye na-ahụ maka etherification na-adịghị mma na-adịghị mma. etherification mmeghachi omume substituent nkesa, isi mmeghachi omume ọnọdụ Ka ihe atụ, na controllability nke bath ruru, alkali ịta na igwakorita ogwe aka ọsọ bụ ogbenye, n'ihi ya, o siri ike ịghọta ihe dị nso homogeneity nke etherification mmeghachi omume, na ọ bụ ọbụna ihe siri ike na-eduzi uka nyefe. na nyocha permeation nke mmeghachi omume etherification miri emi. Ya mere, kneader nwere ụfọdụ njedebe dị ka akụrụngwa mmeghachi omume nke CMC, ọ bụkwa ihe mgbochi nke mmepe nke ụlọ ọrụ ether cellulose. Enwere ike ichikota ezughị oke nke ụdị isi nke mmeghachi omume etherification na 1990 n'ime okwu atọ: obere (obere mmepụta nke otu ngwaọrụ), obere (obere ojiji nke onye na-ahụ maka etherification), ogbenye (mmeghachi omume etherification na-anọchi anya otu nkesa nkesa isi. dara ogbenye). N'iburu n'uche ntụpọ dị na nhazi nke kneader, ọ dị mkpa ịmepụta ngwá ọrụ mmeghachi omume nke nwere ike ime ka mmeghachi omume etherification dị ngwa ngwa, na nkesa nke ihe ndị na-anọchi anya na mmeghachi omume etherification bụ ihe edo edo, nke mere na ọnụego ojiji. nke onye na-ahụ maka etherification dị elu. N'ọgwụgwụ 1990s, ọtụtụ ụlọ ọrụ cellulose ether ụlọ nwere olile anya na Zhejiang Research Institute of Chemical Industry ga-enyocha ma mepụta akụrụngwa mmepụta ngwa ngwa nke ụlọ ọrụ cellulose ether chọrọ. Zhejiang Research Institute of Chemical Industry malitere itinye aka na nyocha nke usoro ngwakọta ntụ ntụ na akụrụngwa na 1970s, guzobe otu R & D siri ike, wee nweta nsonaazụ na-enye afọ ojuju. Ọtụtụ teknụzụ na akụrụngwa enwetala onyinye site na Ministry of Chemical Industry na Zhejiang Science and Technology Progress Award. Na 1980s, anyị na Tianjin Fire Research Institute nke Ministry of Public Security na-arụkọ ọrụ iji mepụta ngwá ọrụ pụrụ iche maka imepụta ntụ ntụ, bụ nke meriri ihe nrite nke atọ nke Ministry of Public Security's Science and Technology Progress Award; na 1990s, anyị nyochara ma mepụta teknụzụ na akụrụngwa agwakọta mmiri siri ike. N'ịmara maka atụmanya mmepe ọdịnihu nke ụlọ ọrụ cellulose ether, ndị na-eme nchọpụta nke Zhejiang Provincial Research Institute of Chemical Industry malitere nyocha na ịmepụta ngwá ọrụ mmepụta pụrụ iche maka cellulose ether.

2. The mmepe usoro nke pụrụ iche reactor maka cellulose ether

2.1 Akụkụ nke igwekota coulter

Ụkpụrụ na-arụ ọrụ nke onye na-agwakọta coulter bụ na n'okpuru ọrụ nke onye na-eme ihe na-eme ka plowshare, ntụ ntụ dị na igwe ahụ na-agbagharị n'akụkụ mgbidi cylinder na ntụgharị okirikiri na radial n'otu aka, na-atụba ntụ ntụ n'akụkụ abụọ. nke ihe-ọkiké n'aka nke ọzọ. Usoro nke mmegharị ahụ na-agafe na-agafe ma na-ejikọta ibe ha, si otú a na-emepụta vortex na-eme mkpọtụ ma na-eme ka oghere oghere dị akụkụ atọ zuru ezu. N'ihi ụkọ mmiri na-adịghị mma nke akụrụngwa mmeghachi omume fibrous, ụdị ndị ọzọ enweghị ike ịnyagharị okirikiri, radial na axial nke cellulose na cylinder. Site na nyocha nke usoro mmepụta CMC na akụrụngwa nke ụlọ ọrụ cellulose ether n'ụlọ na ná mba ọzọ, na-eji afọ 30 nke nsonaazụ nyocha eme ihe n'ụzọ zuru ezu, a na-ahọrọ mixer coulter na 1980 dị ka ihe nlereanya bụ isi maka mmepe nke cellulose. akụrụngwa mmeghachi omume ether .

2.2 Development usoro nke coulter reactor

Site na ule nke obere igwe nnwale, ọ nwetala mmetụta dị mma karịa kneader. Otú ọ dị, mgbe a na-eji ha kpọmkwem na ụlọ ọrụ cellulose ether, a ka nwere nsogbu ndị a: 1) N'ime mmeghachi omume etherification, mmiri nke ihe ọkụkụ na-emepụta ihe na-adịghị mma, n'ihi ya, usoro nke coulter ya na mma na-efe efe adịghị adị. zuru ezu. Na-ebugharị cellulose ka ọ na-agagharị na gburugburu, radial na axial direction nke gbọmgbọm ahụ, ya mere ngwakọta nke reactants ezughị ezu, na-eme ka ojiji dị ala nke reactants na ngwaahịa ole na ole. 2) N'ihi nkwụsi ike na-adịghị mma nke isi ihe na-akwado site na ribs, ọ dị mfe ime ka eccentricity mgbe arụ ọrụ na nsogbu nke nkwụsị akara akara; ya mere, ikuku dị n'èzí na-abanye ngwa ngwa na cylinder site na akara akara ma na-emetụta ọrụ agụụ na cylinder, na-ebute ntụ ntụ na cylinder. Mgbapụ. 3) Ha na-agbapụta valves bụ flapper valves ma ọ bụ diski diski. Nke mbụ dị mfe ikuru ikuku n'èzí n'ihi arụmọrụ akara na-adịghị mma, ebe nke ikpeazụ dị mfe ijigide ihe na-eme ka ọnwụ nke reactants. Ya mere, a ga-edozi nsogbu ndị a otu otu.

Ndị na-eme nchọpụta emeziwanye nhazi nke coulter reactor ọtụtụ oge, ma nye ya ọtụtụ ụlọ ọrụ cellulose ether maka iji nnwale, ma jiri nwayọọ nwayọọ kwalite nhazi ahụ dịka nzaghachi si dị. Site na-agbanwe agbanwe ọdịdị ọdịdị nke coulters na staggered ndokwa nke abụọ n'akụkụ coulters n'akụkụ abụọ nke isi aro, na reactants n'okpuru edinam nke coulters bụghị nanị ọgba aghara na circumferential na radial ntụziaka tinyere n'ime mgbidi nke cylinder, ma. nakwa Splash tinyere nkịtị direction nke abụọ n'akụkụ nke coulter, otú ndị reactants na-n'ụzọ zuru ezu agwakọta, na alkalization na etherification mmeghachi omume dechara na ngwakọta usoro bụ nke ọma, itinye n'ọrụ ọnụego nke reactants dị elu, mmeghachi omume ọsọ bụ ngwa ngwa na ike oriri dị ala . Ọzọkwa, a na-edozi ihe mkpuchi mkpuchi na oche na-ebu na njedebe abụọ nke cylinder ahụ na njedebe njedebe nke nkwado ahụ site na flange iji mee ka ihe siri ike nke isi ihe dị elu, ya mere, ọrụ ahụ kwụsiri ike. N'otu oge ahụ, enwere ike ijide n'aka na a na-eme ka akara akara nke ogwe aka n'ihi na isi ihe na-eme ka ọkpụkpụ adịghị agbagọ ma gbanwee, na ntụ ntụ na cylinder adịghị agbapụ. Site n'ịgbanwe nhazi nke valvụ mgbapụta na ịgbasa dayameta nke tankị na-ekpochapụ, ọ bụghị nanị na ọ nwere ike igbochi njigide ihe ndị dị na valvụ mgbapụta ahụ, ma gbochie nkwụsị nke ntụ ntụ n'oge iyuzucha, si otú a na-ebelata nkwụsị nke mmeghachi omume n'ụzọ dị irè. ngwaahịa. Ọdịdị nke ọhụrụ reactor bụ ezi uche. Ọ nwere ike ọ bụghị nanị na-enye ebe nkwadebe kwụsiri ike na nke a pụrụ ịdabere na ya maka cellulose ether CMC, ma na-egbochikwa ntụ ntụ na cylinder ahụ nke ọma site n'ịkwalite ikuku nke mkpuchi mkpuchi na valvụ mgbapụta. Na gburugburu ebe obibi enyi na enyi, na-aghọta echiche imewe nke green chemical ụlọ ọrụ.

2.3 Mmepe nke coulter reactor

N'ihi ntụpọ nke obere obere, obere na ndị na-adịghị mma, onye na-arụ ọrụ coulter abanyela n'ọtụtụ ụlọ mmepụta CMC ụlọ, ngwaahịa ndị ahụ gụnyere ụdị isii nke 4m.³,6m³, 8m³, 10m³, 15m³na 26m³. Na 2007, coulter reactor meriri mba Utility nlereanya patent ikike (patent mbipụta nọmba: CN200957344). Mgbe 2007 gachara, e mepụtara ihe nrụpụta pụrụ iche maka ahịrị mmepụta ether na-abụghị ionic cellulose (dị ka MC/HPMC). Ka ọ dị ugbu a, mmepụta ụlọ nke CMC na-ejikarị usoro mgbaze.

Dị ka nzaghachi ugbu a sitere na ndị na-emepụta cellulose ether, iji ihe na-emepụta ihe na-emepụta ihe nwere ike ibelata ihe mgbaze site na 20% ruo 30%, na mmụba nke ngwá ọrụ mmepụta ihe, enwere ike inwekwu mbelata n'iji ihe mgbaze eme ihe. Ebe ọ bụ na coulter reactor nwere ike iru 15-26m³, Ịdị n'otu nke nkesa nnọchi na mmeghachi omume etherification dị mma karịa nke kneader.

3. Ngwá ọrụ mmepụta ndị ọzọ nke cellulose ether

N'ime afọ ndị na-adịbeghị anya, ka ị na-emepe emepe cellulose ether alkalization na etherification reactors, ụdị ndị ọzọ na-emepụtakwa.

Igwe elu (nọmba mbipụta patent: CN200955897). Na ihe mgbaze usoro CMC mmepụta usoro, na rake agụụ draya bụ tumadi na-eji na mgbaze mgbake na ihicha usoro n'oge gara aga, ma rake agụụ draya nwere ike na-arụ ọrụ intermittently, mgbe ikuku lifter nwere ike na-aghọta na-aga n'ihu ọrụ. Igwe na-ebufe ikuku na-echipịa ihe CMC site na ntụgharị ngwa ngwa nke coulters na mma na-efe efe na cylinder iji mee ka ikuku ọkụ na-ebufe elu, ma na-efesa uzuoku n'ime cylinder iji mee ka ethanol zuru oke site na ihe CMC ma kwado mgbake, si otú ahụ belata mmepụta ego nke. CMC ma chekwaa ihe onwunwe ethanol, ma mezue ọrụ nke cellulose ether ihicha usoro n'otu oge. Ngwaahịa ahụ nwere ụdị abụọ nke 6.2m³na 8m³.

Granulator (nọmba mbipụta patent: CN200957347). Na usoro nke mmepụta cellulose ether site mgbaze usoro, ejima-screw extrusion granulator bụ tumadi na-eji n'oge gara aga granulate sodium carboxymethyl cellulose ihe mgbe etherification mmeghachi omume, ịsa na ihicha. Ụdị ZLH cellulose ether granulator nwere ike ọ bụghị naanị granulate na-aga n'ihu dị ka granulator ejima-screw extrusion granulator dị ugbu a, kamakwa ọ nwere ike wepụ ihe ndị ahụ site na ịnye ikuku n'ime cylinder na mmiri jụrụ oyi n'ime jaket ahụ. Meghachi omume n'efu okpomọkụ, si otú imeziwanye àgwà nke granulation, na-azọpụta ọkụ eletrik, na ike dịkwuo ngwaahịa mmepụta ọnụego site na-amụba spindle ọsọ, na ike ịgbanwe elu nke ihe larịị dị ka usoro chọrọ. Ngwaahịa ahụ nwere ụdị abụọ nke 3.2m³na 4m³.

Ngwakọta ikuku ikuku (nọmba mbipụta patent: CN200939372). MQH ụdị ikuku igwekota na-eziga ikuku abịakọrọ n'ime ụlọ agwakọta site nozzle na agwakọta isi, na ihe onwunwe na-ebili spirally n'akụkụ cylinder mgbidi na abịakọrọ ikuku na-etolite a fluidized Ịgwakọta ala. Mgbe ọtụtụ usu ịfụ na kwụsịtụ etiti oge, The ngwa ngwa na edo Ịgwakọta ihe na zuru olu nwere ike ghọtara. A na-ejikọta ọdịiche dị n'etiti batches dị iche iche nke ngwaahịa site na ịgwakọta. Ugbu a, e nwere ụdị ngwaahịa ise: 15m³, 30m³,50m³, 80m³, na 100m³.

Ọ bụ ezie na ọdịiche dị n'etiti mba m nke cellulose ether na-emepụta ihe na ọkwa dị elu nke mba ọzọ na-emewanyewanyewanye, ọ ka dị mkpa iji mee ka usoro ahụ dịkwuo mma ma mee ka ọ dịkwuo mma iji dozie nsogbu ndị na-adabaghị na ngwá ọrụ mmepụta ihe ugbu a.

4. Outlook

Ụlọ ọrụ cellulose ether nke mba m na-arụsi ọrụ ike na-emepụta mmepụta na nhazi nke ngwá ọrụ ọhụrụ, na ijikọta njirimara nke ngwá ọrụ iji nọgide na-eme ka usoro ahụ dịkwuo mma. Ndị na-emepụta ihe na ndị na-emepụta ngwá ọrụ amalitela ijikọta ọnụ na itinye ngwa ọhụrụ. Ihe ndị a niile na-egosipụta ọganihu nke ụlọ ọrụ cellulose ether nke obodo m. , njikọ a ga-enwe mmetụta dị mkpa na mmepe nke ụlọ ọrụ ahụ. N'ime afọ ndị na-adịbeghị anya, ụlọ ọrụ cellulose ether nke obodo m, dabere na teknụzụ nwere njirimara ndị China, etinyela uche na ahụmịhe dị elu nke mba ụwa, webata ngwaọrụ mba ọzọ, ma ọ bụ jiri akụrụngwa ụlọ mee ihe n'ụzọ zuru oke iji mezue mgbanwe site na “unyi, adịghị mma, ogbenye” mbụ. na mmepụta ogbako na-arụsi ọrụ ike na Ntugharị nke mechanization na automation iji nweta nnukwu mmụba n'ikike mmepụta, ịdị mma na arụmọrụ na ụlọ ọrụ cellulose ether aghọwo ihe mgbaru ọsọ nkịtị nke ndị na-emepụta cellulose ether nke mba m.