Polyacrylamidechiwedzerwa chinoshandiswa zvakanyanya muindasitiri yemapepa. Polyacrylamide (PAM), sepolymer inonyungudika nemvura, ine yakanakisa flocculation, kukora, kupararira uye zvimwe zvinhu. Ichaiswa kune akati wandei maitiro ane akasiyana mabasa. Muindasitiri yekugadzira mapepa, PAM inoita basa rinokosha. Izvo zvakaunza zvakakosha zvehupfumi kuindasitiri yekugadzira mapepa nekuvandudza zvimiro zvepulp uye kuwedzera kushanda zvakanaka kwemichina yemapepa. Ichi chinyorwa chichakurukura zvakadzama mashandisirwo epolyacrylamide mukugadzira mapepa uye nemhedzisiro yaro pakuvandudza kugadzirwa kwehunyanzvi.
Basic zvivakwa uye mabasa polyacrylamide
Polyacrylamide ndeye yakakwira molecular polymer iyo inogona kukamurwa kuita nonionic, anionic, cationic uye amphoteric mhando zvichienderana nekuchaja kwayo. Kana PAM inonyungudika mumvura, uye chimiro chayo chakareba-cheni yemamorekuru inoita kuti ive nemabasa akanakisa senge flocculation, kukora, rubatsiro rwekuchengetedza, uye rubatsiro rwekusefa. Muindasitiri yemapepa, polyacrylamide inonyanya kushandiswa mune zvinotevera zvinhu:
1. Rubatsiro rwekuchengeta:
PAM mamorekuru ane refu cheni chimiro uye anogona adsorbed pamusoro pamusoro faibha uye fillers kuita mabhiriji. Nekudaro nekunatsiridza mwero wekuchengeta kwemafirita nemafibhi pawebhu pepa. Deredza kurasikirwa kwefiber mumvura chena uye kuderedza kurasikirwa kwezvinhu. Nekuwedzera mwero wekuchengeta kwemafirita nemafibhi, zvimiro zvebepa zvakaita sekutsvedzerera, kudhindwa, uye simba zvinogona kuvandudzwa.
2. Rubatsiro rwesefa:
Kuvandudza mashandiro ekubvisa mvura yepulp, mhanyisa maitiro ekusefa kwemvura uye kuderedza kushandiswa kwesimba.
3. Flocculant:
Kurumidza kupera kwemvura mumatope: PAM inogona kunyatso fambisa mafiber madiki, mafirita uye zvimwe zvakamiswa zvinhu mu pulp kuti zviumbe mahombe particles, kukurumidza kugadzirisa madhaka uye kupera simba kwemvura, uye kuderedza mari yekurapa madhaka.
Kuvandudza hutano hwemvura: PAM inogona kunyatsobvisa zvakasimbiswa zvakasimbiswa uye organic matter mumvura yakasvibiswa, kuderedza BOD neCOD mumvura yakasvibiswa, kunatsiridza mvura, uye kuderedza kusvibiswa kwezvakatipoteredza.
4. Disperant:
Dzivirira fiber agglomeration: PAM inogona kudzivirira zvinobudirira fiber agglomeration mu pulp, kunatsiridza kufanana kwe pulp, uye kunatsiridza kunaka kwepepa.
Kushandiswa kwepolyacrylamide mukugadzira mapepa tekinoroji
1. Pulp kugadzirira danho
Munguva yekugadzira pulp maitiro, mafiber akanaka uye mafirita anorasika nyore nemvura yetsvina, zvichikonzera tsvina yezviwanikwa uye kusvibiswa kwezvakatipoteredza. Kushandisa cationic polyacrylamide sechiyamuro chekuchengetedza chinogona kunyatso kubata nekugadzirisa diki diki uye mafirita mu pulp kuburikidza nechaji neutralization uye bhiriji. Izvi hazvingodzikisi kurasikirwa kwefibers, asiwo zvinoderedza kurodha kwekugadziriswa kwetsvina.
2. Paper machine wet end system
Mumuchina wepepa wet end system, kukurumidza kupera mvura mumuviri ndiyo kiyi yekuvandudza kugadzirwa kwakanaka. Anionic kana nonionic polyacrylamide inogona kushandiswa sefa yekubatsira kuti zvive nyore kuti mvura ibude kubva kune fiber network chimiro nekuvandudza flocculation pakati pe fiber. Iyi nzira inonyanya kupfupisa nguva yekubvisa mvura panguva yekudzikisa simba rekushandisa panguva yekuomeswa kwechikamu.
3. Papermaking stage
Se dispersant, polyacrylamide inogona kudzivirira zvinobudirira fiber flocculation uye kugadzirisa kufanana uye kutsetseka kwepamusoro kwepepa. Nekunyatsosarudza huremu hwemamorekuru uye kubhadharisa density yePAM, zvimiro zvepepa rakapedzwa, senge simba rekusimba uye kubvarura simba, zvinogona zvakare kuvandudzwa. Uye zvakare, polyacrylamide inogona zvakare kuvandudza iyo yekubikirira kwebepa rakavharwa uye kuita kuti kudhinda kwebepa kuve nani.
Iwo akakosha mabhenefiti epolyacrylamide mukuvandudza kugadzirwa kwakanaka
1. Deredza kurasikirwa kwezvinhu
Iko kushandiswa kwezvibatsiro zvekuchengeta kunonatsiridza zvakanyanya mwero wekuchengeta wemafibhi akanaka uye mafirita mu pulp, inoderedza kushandiswa kwezvinhu zvakabikwa, uye inochengetedza zvakananga mutengo wekugadzira.
2. Kurumidza kukurumidza kupera mvura mumuviri
Kuunzwa kwemasefa aids kunoita kuti nzira yekubvisa mvura inyatsoita, nekudaro ichiwedzera kumhanya kwemuchina wepepa uye nekupfupisa kutenderera kwekugadzira. Izvi hazvisi kungowedzera kumira-yega kugadzirwa kwesimba, asiwo kunoderedza kushandiswa kwesimba.
3. Deredza kudzvinyirira kwemvura yakasviba
Nokuvandudza flocculation mhedzisiro, polyacrylamide inogona zvinobudirira kuderedza zviri yakaturikwa yakaoma mumvura tsvina, kuderedza kurodha kwetsvina kurapwa nzvimbo kubva kunobva uye kuderedza kwezvakatipoteredza kuchengetedzwa mari dzemabhizinesi.
4. Kuvandudza kunaka kwepepa
Kushandiswa kwemadisperants kunoita kuti kugoverwa kwefiber kwepepa kuve kwakafanana, kunonatsiridza zvakanyanya muviri uye kuona zvimiro zvebepa, uye kunosimudzira kukwikwidza kwemusika kwechigadzirwa.
Zvinhu zvinokanganisa kushandiswa kwekushandiswa kwepolyacrylamide
Kuti upe kutamba kwakazara kuita kwepolyacrylamide, zvinotevera zvinhu zvinofanirwa kutariswa pa:
1. PAM kusarudzwa kwemuenzaniso
Akasiyana-siyana ekugadzira mapepa uye marudzi emapepa ane zvakasiyana zvinodiwa kune molecular uremu uye kubhadharisa density yePAM. Yakakwira molecular uremu PAM inokodzera flocculation uye sefa rubatsiro, nepo yakaderera molecular uremu PAM inonyanya kukodzera kupararira.
2. Kuwedzera huwandu uye nzira yekuwedzera
Huwandu hwePAM hwakawedzerwa hunofanira kunyatsodzorwa. Huwandu hwakawandisa hunogona kukonzera mhedzisiro yakaipa, sekukanganisa kushaya mvura mumuviri kana kuwedzera mitengo yekugadzira. Panguva imwecheteyo, nzira yekuwedzera yakapararira inofanirwa kushandiswa kudzivirira kuunganidzwa kwenzvimbo kunokanganisa mhedzisiro.
3. Maitiro ekugadzirisa
Tembiricha, pH uye mamiriro emvura zvese zvinokanganisa PAM kuita. Semuenzaniso, cationic PAM inoshanda zvakanyanya mukusarerekera kune zvishoma acidic mamiriro, nepo anionic PAM yakakodzera kune alkaline nharaunda.
Seyakawanda-inoshanda yekuwedzera muindasitiri yekugadzira mapepa, polyacrylamide inoita basa rakakosha mukuvandudza kugona kwekugadzira, kudzikisa mutengo wekugadzira uye kuvandudza mhando yechigadzirwa nekunaka kwayo kuyerera, kuchengetedza, kusefa uye kuparadzira zvivakwa. Mumashandisirwo anoshanda, makambani anofanirwa kusarudza zvine musoro nekugadzirisa mamiriro ekushandisa ePAM zvichienderana nemaitiro avo ekuita uye zvinodiwa kuti vawane zvakanakisa zvehupfumi uye zvakatipoteredza.
Nguva yekutumira: Nov-28-2024
