Polyanionic cellulose (PAC)
Polyanionic cellulose (PAC) ke motsoako oa ether o qhibilihang ka metsing o lokisitsoeng ke phetoho ea lik'hemik'hale ea cellulose ea tlhaho.Ke cellulose ether ea bohlokoa e qhibilihang ka metsing.Hangata e sebelisoa e le letsoai la sodium 'me e sebelisoa haholo ha ho chekoa oli, haholo-holo liliba tsa metsi a letsoai le ho chekoa ha oli kantle ho leoatle.
PAC-Kopo Ka Petroleum
1. Mesebetsi ea PAC le CMC lebaleng la oli ke e latelang:
- Seretse se nang le PAC le CMC se ka etsa hore lebota la seliba le bopehe ka sebopeho se tšesaane le se thata sa sefene se nang le ho kenella ho tlase le ho fokotsa tahlehelo ea metsi;
- Ka mor'a ho kenya PAC le CMC seretseng, mochine oa ho cheka o ka fumana matla a tlaase a ho kuta, a etsa hore seretse se be bonolo ho lokolla khase e phuthetsoeng ka ho sona, 'me ka potlako e lahle litšila ka mokoting oa seretse;
- Joalo ka liphahlo tse ling tse emisitsoeng, seretse sa ho cheka se na le nako e itseng ea ho ba teng, e ka tsitsitseng le ho atolosoa ka ho eketsa PAC le CMC.
2. PAC le CMC li na le ts'ebetso e latelang e babatsehang ts'ebelisong ea sebaka sa oli:
- Boemo bo phahameng ba ho kenya sebaka, ho lumellana hantle ha ho kenya sebaka, viscosity e phahameng le tekanyo e tlaase, ho ntlafatsa ka katleho ts'ebetso ea litšebeletso tsa seretse;
- Ho hanyetsa mongobo o motle, ho hanyetsa letsoai le ho hanyetsa alkali, ho loketse metsi a hloekileng, metsi a leoatle le seretse se tletseng metsi a nang le metsi;
- Kaka ea seretse e entsoeng ke ea boleng bo botle le e tsitsitseng, e ka khonang ho tsitsisa sebopeho sa mobu o bonolo le ho thibela ho putlama ha lerako la shaft;
- E loketse lits'ebetso tsa seretse tse nang le taolo e thata e tiileng ea litaba le mefuta e mengata e fapaneng.
3. Litšobotsi tsa ts'ebeliso ea PAC le CMC ho cheka oli:
- E na le bokhoni bo phahameng ba ho laola tahlehelo ea metsi, haholo-holo se fokotsang tahlehelo ea metsi.Ka tekanyo e tlaase, e ka laola tahlehelo ea metsi ka tekanyo e phahameng ntle le ho ama thepa e meng ea seretse;
- E na le ho hanyetsa mocheso o motle le ho hanyetsa letsoai ka ho fetisisa.E ntse e ka ba le bokhoni bo botle ba ho fokotsa tahlehelo ea metsi le rheology e itseng tlas'a motsoako o itseng oa letsoai.The viscosity e batla e sa fetohe ka mor'a ho qhibiliha metsing a letsoai.E loketse ka ho khetheha bakeng sa ho cheka lebōpong la leoatle le liliba tse tebileng;
- E ka laola hantle rheology ea seretse mme e na le thixotropy e ntle.E loketse seretse sefe kapa sefe se nang le metsi ka metsing a hloekileng, metsi a leoatle le brine e tletseng metsi;
- Ho feta moo, PAC e sebelisoa e le mokelikeli o samenteng ho thibela mokelikeli ho kena ka masobeng le ho robeha;
- Mokelikeli oa mochini oa sefa o lokiselitsoeng ka PAC o na le khanyetso e ntle ho 2% ea tharollo ea KCl (e tlameha ho ekeletsoa ha ho lokisoa mokelikeli oa mochine oa khatiso), ho qhibiliha hantle, tšebeliso e bonolo, e ka lokisoa sebakeng sa sebaka, lebelo la ho etsa li-gel le matla a ho jara lehlabathe le matla.Ha e sebelisoa ka sebopeho se tlase sa permeability, phello ea eona ea khatiso ea filthara e ntle haholo.
Lintlha tsa Parameters
| Chelete e ekelitsoeng (%) | |
| Setsi sa tlhahiso ea oli | 0.4-0.6% |
| Moemeli oa phekolo ea ho cheka | 0.2-0.8% |
| Haeba o hloka ho itlhophisa, o ka fana ka foromo e qaqileng le ts'ebetso. | |
| Lipontšo | ||
| PAC-HV | PAC-LV | |
| Mmala | Bosehla bo bosoeu kapa bo bobebe | Phofo kapa likaroloana tse mosehla o mosoeu kapa o bobebe |
| metsi | 10.0% | 10.0% |
| PH | 6.0-8.5 | 6.0-8.5 |
| Boemo ba ho nka sebaka | 0.8 | 0.8 |
| sodium chloride | 5% | 2% |
| Bohloeki | 90% | 90% |
| Boholo ba likaroloana | 90% e feta 250 microns (60 mesh) | 90% e feta 250 microns (60 mesh) |
| Viscosity (b) 1% tharollo ea metsi | 3000-6000mPa.s | 10-100mPa.s |
| Ts'ebetso ea kopo | ||
| Mohlala | Index | |
| AV | FL | |
| PAC-ULV | ≤10 | ≤16 |
| PAC-LV1 | ≤30 | ≤16 |
| PAC-LV2 | ≤30 | ≤13 |
| PAC-LV3 | ≤30 | ≤13 |
| PAC-LV4 | ≤30 | ≤13 |
| PAC-HV1 | ≥50 | ≤23 |
| PAC-HV2 | ≥50 | ≤23 |
| PAC-HV3 | ≥55 | ≤20 |
| PAC-HV4 | ≥60 | ≤20 |
| PAC-UHV1 | ≥65 | ≤18 |
| PAC-UHV2 | ≥70 | ≤16 |
| PAC-UHV3 | ≥75 | ≤16 |