1. Corrosion Resistance
FGD nozzlesinoshanda munzvimbo dzinoparadza zvakanyanya dzine sulfur oxides, chlorides, uye mamwe makemikari ane hukasha. Silicon carbide (SiC) ceramic inoratidza kusarudzika kushora kushomeka neisingasviki 0.1% kurasikirwa kukuru mupH 1-14 mhinduro (pa ASTM C863 bvunzo). Kuenzaniswa nesimbi isina tsvina (PREN 18-25) uye nickel alloys (PREN 30-40), SiC inochengetedza kutendeseka kwechimiro pasina pitting kana kushungurudza corrosion kuputika kunyange mu concentrated acids pane yakakwirira tembiricha.
2. High-Temperature Kugadzikana
Kushanda tembiricha mune wet flue gasi desulfurization masisitimu anowanzo siyana 60-80°C nemaspikes anodarika 120°C. SiC ceramic inochengetedza 85% yekamuri-tembiricha simba pa 1400 ° C, inodarika alumina ceramics (kurasikirwa ne50% simba ne1000 ° C) uye simbi isingapise kupisa. Thermal conductivity yayo (120 W/m·K) inogonesa kudzima kupisa kwakanaka, kudzivirira kupisa kwekushushikana kwemhepo.
3. Pfeka Resistance
Iine kuomarara kweVickers kwe28 GPa uye kuomarara kwekutsemuka kwe4.6 MPa·m¹/², SiC inorakidza kusakura kwekukukurwa kwematombo enhunzi (Mohs 5-7). Maedzo emumunda anoratidza maSiC nozzles anochengetedza <5% kupfeka mushure memaawa makumi maviri,000 ebasa, zvichienzaniswa ne30-40% kupfeka mualuminium nozzles uye kutadza kuzere kwesimbi yakavharwa nepolymer mukati memaawa masere.
4. Flow Characteristics
Iyo isiri-kunyorova pamusoro pe reaction-yakasungirirwa SiC (contact angle> 100 °) inogonesa chaiyo slurry dispersion neCV kukosha <5%. Its Ultra-smooth surface (Ra 0.2-0.4μm) inoderedza kudzvinyirirwa kudonha ne15-20% kana ichienzaniswa nesimbi nozzles, apo ichichengetedza yakagadzikana yekubudisa coefficients (± 1%) pamusoro pekushanda kwenguva refu.
5. Maintenance Nyore
SiC's makemikari inertness inobvumira hukasha kuchenesa nzira dzinosanganisira:
- Yakakwira-kumanikidza mvura jet (kusvika 250 bar)
- Ultrasonic kuchenesa nealkaline mhinduro
- Steam sterilization pa150°C
Pasina njodzi yekushatiswa kwepasi kwakajairika mupolymer-lined kana yakavharwa simbi nozzles.
6. Lifecycle Economics
Nepo mitengo yekutanga yeSiC nozzles iri 2-3 × yakakwira kupfuura yakajairwa 316L simbi isina tsvina, hupenyu hwavo hwesevhisi makore 8-10 (vs 2-3 makore emasimbi) inoderedza kutsiva frequency ne70%. Mari yese yevaridzi inoratidza 40-60% yekuchengetedza mukati memakore gumi-nguva, ine zero downtime ye-in-situ kugadzirisa.
7. Kugarisana Kwezvakatipoteredza
SiC inoratidza kuita kusingaenzaniswi mumamiriro akanyanya:
- Munyu wekupfapfaidza kuramba: 0% shanduko yakakura mushure me5000hr ASTM B117 kuyedzwa
- Acid dew point operation: Inomira 160°C H2SO4 mhute
- Thermal shock resistance: inopona 1000°C → 25°C kudzima matenderera
8. Anti-scaling Properties
Iyo covalent atomic chimiro cheSiC inogadzira isingaite-reactive pamusoro ine scaling mazinga 80% yakaderera pane dzimwe simbi dzimwe nzira. Zvidzidzo zveCrystallographic zvinoratidza kuti calcite uye gypsum deposits inoumba mabhondi asina simba (adhesion <1 MPa) paSiC versus> 5 MPa pamasimbi, zvichiita kuti zvive nyore kubviswa kwemuchina.
Technical Mhedziso
Silicon carbide ceramic inobuda seyakanyanya kunaka sarudzo yeFGD nozzles kuburikidza neyakaomesesa mashandiro ekuongorora:
- 10 × hurefu hwehupenyu hwesevhisi pane dzimwe nzira dzesimbi
- 92% kuderedza mukugadzirisa kusina kurongwa
- 35% kuvandudzwa muSO2 yekubvisa kunyatsoita kuburikidza neyakafanana yekupfapfaidza mapatani
-Kutevedzera kwakazara neEPA 40 CFR Chikamu 63 emissions zviyero
Nekufambira mberi hunyanzvi hwekugadzira senge mvura-chikamu sintering uye CVD coating, inotevera-chizvarwa SiC nozzles iri kuwana sub-micron pamusoro pekupedzisira uye yakaoma geometries yaimbove isingawanikwe mumakeramiki. Iyi tekinoroji shanduko inoisa silicon carbide sechinhu chesarudzo chechizvarwa chinotevera flue yekuchenesa gasi masisitimu.
Nguva yekutumira: Mar-20-2025