Theknoloji ea Cellulose Ether bakeng sa Phekolo ea Metsi a Litšila ea Organic

Matlakalametsi indastering ea cellulose ether haholo ke lihlapolli tsa tlhaho tse kang toluene, oliticol, isopate, le acetone. Ho fokotsa lihlapolli tsa tlhaho tlhahisong le ho fokotsa ho ntšoa ha khabone ke tlhokahalo e ke keng ea qojoa bakeng sa tlhahiso e hloekileng. Joalo ka khoebo e nang le boikarabelo, ho fokotsa ho tsoa ha mosi le hona ke litlhoko tsa ts'ireletso ea tikoloho 'me li lokela ho phethahala. Lipatlisiso mabapi le tahlehelo ea solvent le recycled indastering ea cellulose ether ke sehlooho se nang le moelelo. Mongoli o hlahlobile tlhahlobo e itseng ea tahlehelo ea solvent le ho tsosolosa tlhahiso ea fibrin ether, 'me o fumane liphello tse ntle mosebetsing oa sebele.

Mantsoe a sehlooho: cellulose ether: recycle ea solvent: khase ea mouoane; polokeho

Li-solvents ke liindasteri tse nang le indasteri e mengata ea lik'hemik'hale tsa oli, lik'hemik'hale tsa meriana, tsa meriana le liindasteri tse ling. Li-solvents ka kakaretso ha li amehe karabelo nakong ea ts'ebetsomokhoa oa tlhahiso ea cellulose ether. Nakong ea ts'ebetso ea ts'ebeliso, li-solvents nakong ea ts'ebetso ea ts'ebetso ea lik'hemik'hale ka sesebelisoa sa ho nchafatsa li ka sebelisoa ho fihlela phokotso. Sehlahisoa se tšeloa sepakapakeng ka mokhoa oa khase e tsoang (ka kakaretso e bitsoa VOC). VOC e baka tšenyo e tobileng maphelong a batho, e thibelang lihlapolli tsena hore li se ke tsa senyeha nakong ea ts'ebeliso, li etsa hore maemo a boele a sebelisoe ho fihlela tlhahiso e hloekileng ea khabone le tikoloho.

1. Mokhoa o kotsi le o tloaelehileng oa ho sebelisa li-solvents tsa manyolo

1.1 Kotsi ea lihlapolli tse sebelisoang hangata

Li-solvents tse ka sehloohong tsa tlhahiso ea cellulose ether li kenyelletsa toluene, isopropanol, olite, acetone, joalo-joalo tse ka holimo ke li-solvents tse chefo, tse kang dermopine. Ho kopana ha nako e telele ho ka etsahala ho neurasthenia syndrome, hepatoblasty, le ho se tloaelehe ha basebetsi ba basali ba ho ilela khoeli. Ho bonolo ho baka letlalo le omeletseng, ho phatloha, dermatitis. E halefisa letlalo le lera la mucous, 'me e na le anesthesia bakeng sa tsamaiso ea methapo e bohareng. Mouoane oa isopropanol o na le phello e kholo ea anesthesia, e nang le phello e susumetsang ho mucosa ea leihlo le pampiri ea ho hema, 'me e ka senya retina le methapo ea optic. Phello ea anesthesia ea acetone tsamaisong ea methapo e bohareng e na le mokhathala, ho nyekeloa ke pelo le ho tsekela. Maemong a matla, ho hlatsa, spasm, esita le koma. E tena mahlo, linko le 'metso. Ho kopana nako e telele le ho tsekela, ho chesa maikutlo, pharyngitis, bronchitis, mokhathala le thabo.

1.2 Mekhoa e tloahelehileng ea ho sebelisa lintho tse hlapollang ka tlhaho e ntša khase

Tsela e molemo ka ho fetisisa ea ho phekola khase ea mokelikeli oa solvent ke ho fokotsa ho tsoa ha metsoako e tsoang mohloling. Tahlehelo e ke keng ea qojoa e ka fumanoa feela ka lihlapolli tse ka bang teng. Hona joale, mokhoa oa ho tsosolosa lik'hemik'hale tsa lik'hemik'hale o hōlile ebile o ka tšeptjoa. Metsoako ea hona joale e sebelisoang hangata ka har'a khase ea litšila ke: Mokhoa oa Concretion, mokhoa oa ho monya, mokhoa oa adsorption.

Mokhoa oa condensation ke theknoloji e bonolo ka ho fetisisa ea ho tsosolosa. Molao-motheo oa motheo ke ho pholisa khase ea mouoane ho etsa hore mocheso o be tlase ho feta mocheso oa phoka oa lintho tse phelang, ho kokobetsa lintho tse phelang hore e be marotholi, a arohaneng ka ho toba le khase ea mouoane, ebe o e sebelisa hape.

Mokhoa oa ho monya ke oa ho sebelisa mokelikeli oa mokelikeli ho ikopanya ka kotloloho le khase ea ho tsoa ho tlosa lintho tse phelang ho tsoa khase. Ho monya ho arotsoe ka ho monya 'meleng le ho monya lik'hemik'hale. Solvent recovery ke ho monya 'mele, 'me lintho tse monyang tse sebelisoang hangata ke metsi, diesel, parafine kapa lihlapolli tse ling. Ntho leha e le efe ea lintho tse phelang e qhibilihang ka har'a mokelikeli e ka fetisoa ho tloha karolong ea khase ho ea karolong ea mokelikeli, 'me mokelikeli o monyang o ka phekoloa hape. Hangata, distillation e hloekisitsoeng e sebelisetsoa ho hloekisa motsoako.

Mokhoa oa adsorption hajoale o sebelisa theknoloji e pharalletseng ea ho hlaphoheloa ha solvent. Molao-motheo ke ho hapa lintho tse phelang ka har'a khase ea mouoane ka ho sebelisa sebopeho sa porous sa carbon e sebetsang kapa faeba e entsoeng ka carbon. Ha khase ea ho qeta e khabisoa ke bethe ea adsorption, lintho tse phelang li adsorbed betheng, 'me khase ea ho qeta e hloekisoa. Ha adsorbent adsorption e fihla ka botlalo, mouoane oa metsi (kapa moea o chesang) o fetisetsoa ho futhumatsa bethe e monyang, ho tsosolosa adsorbent, ntho ea tlhaho e fefoloa ebe e lokolloa, 'me motsoako oa mouoane o thehoa ka mouoane oa metsi (kapa moea o chesang. ). Essence Folisa motsoako oa mouoane ka condenser ho o kopanya hore e be mokelikeli. Li-solvents li aroloa ka tšebeliso ea distillation ea kelello kapa li-separators ho ea ka tharollo ea metsi.

2. Ho hlahisa le ho sebelisoa hape ha khase e tsoang ka har'a mokelikeli tlhahisong ea cellulose ether.

2.1 Ho hlahisa khase ea mokelikeli oa lintho tse phelang

Tahlehelo ea solvent tlhahiso ea cellulose ether e bakoa haholo ke mofuta oa metsi a litšila le khase e litšila. Masala a tiileng a fokotsehile, 'me tahlehelo ea karolo ea metsi haholo-holo ke sekhechana sa metsi a litšila. Li-solvents tsa ntlha tse tlaase li bonolo haholo ho lahleheloa ke metsi, empa tahlehelo ea li-solvents tsa ntlha e tlaase ka kakaretso e lokela ho thehoa holim'a khase ea khase. Haholo-holo tahlehelo ea matla ke decompression distillation, reaction, centrifugal, vacuum, joalo-joalo lintlha tse latelang:

(1) The solvent e baka tahlehelo ea "phefumoloho" ha e bolokiloe ka tanka ea polokelo.

(2) Li-solvents tse belang tse tlase li na le tahlehelo e kholo nakong ea vacuum, ha sekoti se phahame, ha nako e ntse e feta, tahlehelo e kholoanyane; tšebeliso ea lipompo tsa metsi, lipompo tsa vacuum tsa mofuta oa W kapa li-ring ring system li tla baka tšenyo e kholo ka lebaka la khase ea vacuum exhaust.

(3) Litahlehelo nakong ea centrifugation, palo e kholo ea khase ea mokelikeli e kenang tikolohong nakong ea karohano ea filthara ea centrifugal.

(4) Litahlehelo tse bakoang ke ho fokotsa decompression distillation.

(5) Tabeng ea mokelikeli o setseng kapa o tsepamisitsoe ho khomarela haholo, lihlahisoa tse ling tse ka har'a masalla a distillation ha li sebelisoe hape.

(6) Pholiso e sa lekaneng ea tlhōrō ea khase e bakoang ke tšebeliso e fosahetseng ea mekhoa ea ho tsosolosa.

2.2 Mokhoa oa ho sebelisa hape oa khase e tsoang ka har'a mokelikeli

(1) Mokelikeli o kang litanka tsa polokelo ea litanka. Nka se bolokang mocheso ho fokotsa phefumoloho, 'me u kopanye litiiso tsa naetrojene ka mokelikeli o tšoanang ho qoba tahlehelo ea tanka. Ka mor'a hore condensation ea khase ea mohatla e kene tsamaisong ea ho tsosolosa ka mor'a hore e fokotsehe, e qoba ka katleho tahlehelo nakong ea polokelo ea solvent e phahameng.

(2) Vacuum system cyclic aeration le ho tsosolosa khase ea litšila tsamaisong ea vacuum. Vacuum exhaust e sebelisoa hape ke condenser ebe e khutlisoa ke li-recyclers tse tharo.

(3) Ts'ebetsong ea tlhahiso ea lik'hemik'hale, solvent e koetsoeng ho fokotsa ts'ebetso ha e na tlhahiso ea lisele. Metsi a litšila a nang le metsi a litšila a batlang a le holimo a nang le metsi a litšila a mangata a tšeloa 'me a sebelisoa hape ka khase ea ho ntša metsi. Sehlahisoa sa phomolo.

(4) Taolo e tiileng ea maemo a ts'ebetso ea ts'ebetso, kapa ho amohela moralo oa tanka ea bobeli ea adsorption ho qoba tahlehelo e phahameng ea khase.

2.3 Kenyelletso ea khase e tsoang ka har'a khabone ea mokelikeli o tlase oa concentration

Khase e boletsoeng ka holimo ea mohatla le liphaephe tsa mohatla o fokolang oa khase ea meridian li qala ho kenngoa ka har'a bethe ea k'habone ka mor'a ho kenya pele. The solvent e khomaretsoe ka carbon activated, 'me khase e hloekisitsoeng e ntšoa ka tlaase ho bethe ea adsorption. The carbon bed with adsorption saturation e etsoa ka mouoane oa khatello e tlase. Mouoane o kena ka tlase ho bethe. Ho tšela carbon activated, adsorbent solvent e khomaretsoe 'me e ntšoa ka betheng ea carbon hore e kene ka condenser: ka har'a condenser, motsoako oa solvent le metsi a metsi a qhibiliha ebe o phalla ka tanka ea polokelo. Khatiso e ka ba 25 o / O ho 50%, ka mor'a hore distillation kapa karohano e arohane. Ka mor'a hore bethe ea mashala e kopane 'me e tsosolosoe ka ho omisa, boemo ba adsorption bo fetohang bo sebelisetsoa ho phethahatsa potoloho ea ts'ebetso. Ts'ebetso eohle e tsoela pele. E le ho ntlafatsa sekhahla sa ho hlaphoheloa, makotikoti a mararo a tandem ea boemo ba bobeli a ka sebelisoa.

2.4 Melao ea Tšireletseho ea ho sebelisoa hape ha khase ea exhaust

(1) Moralo, tlhahiso le ts'ebeliso ea sehokelo sa khabone se kentsoeng le sekontiri sa tube se nang le mouoane se lokela ho kopana le lipehelo tse nepahetseng tsa GBL50. Bokaholimo ba sets'oants'o sa khabone se sebetsang se lokela ho hlophisoa ka sekala sa khatello, sesebelisoa sa ho tsoa ka polokeho (valve ea polokeho kapa matlapa a phatlohang Sesebelisoa). Moralo, tlhahiso, ts'ebetso, le tlhahlobo ea sesebelisoa sa ts'ireletso e lutlang li tla tsamaellana le lipehelo tsa "moralo le palo ea lipalo tsa moralo oa moralo le lipalo tsa sephutheloana sa ts'ireletso le moralo oa li-valve tse hlano tsa ts'ireletso le letlapa la ho phatloha. ” ea melaoana ea taolo ea tekheniki ea sekepe sa khatello. “

(2) Sesebelisoa sa ho ipholisa ka boiketsetso se lokela ho fanoa ka har'a sehokelo se monyang khabone se kentsoeng. Mohaho o kentsoeng oa khase o kentsoeng le ho romelloa kantle ho naha le adsorbent e lokela ho ba le lintlha tse ngata tsa tekanyo ea mocheso le selaoli se bonts'ang mocheso, se bonts'ang mocheso ka nako efe kapa efe. Ha mocheso o feta boemo ba mocheso o phahameng ka ho fetisisa, hang-hang ntša lets'oao la alamo 'me u bulele sesebelisoa sa ho pholisa hang-hang. I'HJPE ea lintlha tse peli tsa tlhahlobo ea mocheso ha e fete 1 m, 'me sebaka se pakeng tsa ntlha ea teko le lerako le ka ntle la sesebelisoa se lokela ho ba kholo ho feta 60 cm.

(3) Sesebelisoa sa mahloriso sa khase sa khase e khomaretsoeng ea khase e kentsoeng se lokela ho hlophisoa ho bona khase ea khase khafetsa. Ha bongata ba khase e tsoang kantle ho naha bo feta boleng bo holimo bo behiloeng, bo lokela ho emisoa: adsorption le ho hlolla. Ha mouoane o e-na le metsero, phala ea ho ntša metsi ka tšireletso e lokela ho behoa holim'a lisebelisoa tse kang condenser, separator sa metsi a khase le tanka ea polokelo ea metsi. Activated carbon absorbers e lokela ho behoa holim'a kotopo ea moea monyako le ho romela thepa ea khase le ho romela kantle ho naha ho fumana hore na ho na le khanyetso ea phallo ea moea (khatello e theoha) ea adsorbent ho thibela khoele ea khase ea khase ho tsoa moeeng o fokolang.

(4) The solvents lokela ho hlaseloa ke phala moea le moea-phase mahloriso alamo ka phala ea moea moeeng. Matlakala a activated carbon e alafshoa ho latela litšila tse kotsi. Motlakase le lisebelisoa li ntša moralo oa bopaki ba ho phatloha.

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(6) Sehlapolli se khutlisa liphaephe tsa phaephe e 'ngoe le e 'ngoe ho fihlella khase ea mouoane ea mokelikeli o fokolang haholo ka hohle kamoo ho ka khonehang ho qoba phihlello e tobileng ea khase ea moholi o phahameng.

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3. Qetello

Ka bokhutšoanyane, ho fokotsa tahlehelo ea mosi oa solvent tlhahisong ea cellulose ether nama ea khomo ke phokotso ea litšenyehelo, hape ke mohato o hlokahalang ho sebeletsa sepheo sa sechaba sa ts'ireletso ea tikoloho le ho boloka bophelo bo botle ba basebetsi mosebetsing. Ka ho hloekisa tlhahlobo ea tlhahlobo ea tlhahiso ea lihlahisoa tsa solvent, mehato e ts'oanang ea ho eketsa tlhahiso ea solvent; joale ts'ebetso ea ts'ebetso ea ts'ebetso ea ho hlaphoheloa e ntlafatsoa ka ho ntlafatsa moralo oa sesebelisoa sa ho tsosolosa carbon: Kotsi ea Tšireletso. E le ho eketsa melemo motheong oa tšireletso.