1. Kuramba Kuora
Maburi eFGDinoshanda munzvimbo dzine ngura yakawanda dzine ma sulphur oxides, chlorides, uye mamwe makemikari ane hukasha. Silicon carbide (SiC) ceramic inoratidza ngura yakasimba nekurasikirwa ne pH 1-14 (pakuyedzwa kweASTM C863). Zvichienzaniswa nesimbi isina ngura (PREN 18-25) uye nickel alloys (PREN 30-40), SiC inochengetedza chimiro chayo isina gomba kana kupwanya ngura kunyangwe mu acids dzakasimba pakupisa kwakakwira.
2. Kugadzikana Kwekupisa Kwakakwirira
Tembiricha dzinoshanda mumasisitimu ekubvisa sulfurization egasi remvura inonyorova dzinowanzova pakati pe60-80°C nemaspikes anodarika 120°C. SiC ceramic inochengetedza 85% yesimba rayo rekupisa-mukamuri pa1400°C, ichikunda alumina ceramics (inorasikirwa nesimba re50% ne1000°C) uye simbi dzisingapisi. Kufambisa kwayo kupisa (120 W/m·K) kunoita kuti kupisa kuparare zvakanaka, zvichidzivirira kuunganidzwa kwekupisa.
3. Kuramba Kupfeka
Nekuomarara kweVickers kwe28 GPa uye kuomarara kwekutyoka kwe4.6 MPa·m¹/², SiC inoratidza kusimba kwakanyanya kwekukukurwa kwevhu pakurwisa nhunzi dzemadota (Mohs 5-7). Miedzo yemumunda inoratidza kuti ma nozzles eSiC anoramba achisakara <5% mushure memaawa ekushanda e20,000, zvichienzaniswa nekusakara kwe30-40% muma nozzles ealumina uye kutadza zvachose kwesimbi dzakaputirwa nepolymer mukati memaawa 8,000.
4. Hunhu hweKuyerera
Nzvimbo isina kunyorovesa yeSiC ine reaction-bonded (contact angle >100°) inoita kuti slurry dispersion inyatsojeka ine CV values <5%. Nzvimbo yayo yakapfava zvakanyanya (Ra 0.2-0.4μm) inoderedza kuderera kwepressure ne15-20% zvichienzaniswa nesimbi, ukuwo ichichengetedza stable discharge coefficients (±1%) panguva yekushanda kwenguva refu.
5. Kugadzirisa Zviri Nyore
Kusashanda kwemakemikari kweSiC kunobvumira nzira dzekuchenesa zvine simba dzinosanganisira:
- Jeti yemvura ine simba guru (kusvika kumabhawa 250)
- Kuchenesa kweUltrasonic nemhinduro dzealkaline
- Kuchenesa nemhepo inopisa pa150°C
Pasina njodzi yekuora kwepamusoro inowanikwa mumapombi esimbi ane polymer kana kuti akaputirwa.
6. Hupfumi hweHupenyu
Kunyange hazvo mitengo yekutanga yeSiC nozzles yakakwira ne2-3× kupfuura simbi isingatsvedzeri ye316L, hupenyu hwayo hwekushanda kwemakore 8-10 (zvichienzaniswa nemakore 2-3 esimbi) inoderedza kuwanda kwekutsiva ne70%. Mari yese yekuva muridzi inoratidza kuchengetedza kwe40-60% mumakore gumi, pasina nguva yekushanda kwekugadzirisa mukati meimba.
7. Kuenderana Kwenzvimbo
SiC inoratidza kushanda kusingaenzaniswi mumamiriro ezvinhu akaipisisa:
- Kudzivirira munyu kupfapfaidza: 0% shanduko yehukuru mushure mekuyedzwa kweASTM B117 kwemaawa 5000
- Kushanda kwenzvimbo yedova ine acid: Inotsungirira 160°C H2SO4 vapors
- Kudzivirira kupisa: Inopona 1000°C→25°C quench cycles
8. Hunhu Hwekudzivirira Kukura
Maumbirwo eatomu eSiC anogadzira nzvimbo isingashande zvakanaka ine mwero wekuyera wakaderera ne80% pane dzimwe nzira dzesimbi. Zvidzidzo zveCrystallographic zvinoratidza kuti calcite ne gypsum deposits zvinoumba zvisungo zvisina kusimba (kunamatira <1 MPa) paSiC zvichienzaniswa ne >5 MPa pasimbi, zvichiita kuti kubviswa kwesimbi kuve nyore.
Mhedziso yehunyanzvi
Silicon carbide ceramic ndiyo sarudzo yakanakisisa yezvinhu zveFGD nozzles kuburikidza nekuongorora kwakazara mashandiro:
- Nguva yekushanda yakareba 10× kupfuura dzimwe nzira dzesimbi
- Kuderedzwa kwe92% mukugadzirisa kusina kurongwa
- Kuvandudzika kwe35% mukushanda zvakanaka kwekubvisa SO2 kuburikidza nemapatani ekupfapfaidza anogara achiitwa.
- Kutevedzera zvizere mitemo yeEPA 40 CFR Chikamu 63 yekubudisa utsi
Nekufambira mberi kwehunyanzvi hwekugadzira senge liquid-phase sintering uye CVD coating, ma nozzles eSiC echizvarwa chinotevera ari kuwana magumo epamusoro pe micron uye ma geometries akaomarara aisambowanikwa mu ceramics. Kushanduka uku kwetekinoroji kunoisa silicon carbide sechinhu chinosarudzwa kune masisitimu ekuchenesa gasi echizvarwa chinotevera.
Nguva yekutumira: Kurume-20-2025