1. Ubudahangarwa bw'inkongi
Utuzu twa FGDIkora ahantu hangiza cyane harimo okiside za sulfur, kloride, n'ibindi binyabutabire bikaze. Ceramic ya silicon carbide (SiC) igaragaza ubushobozi bwo kurwanya ingese ku buryo budasanzwe, ikaba ifite igihombo kiri munsi ya 0.1% mu bisubizo bya pH 1-14 (kuri ASTM C863). Ugereranyije n'icyuma kitagira umugese (PREN 18-25) na aloyi za nikeli (PREN 30-40), SiC igumana imiterere yayo idatera ingese cyangwa ngo itere ikibazo cyo kwangirika ndetse no mu bidukikije biri ku bushyuhe bwinshi.
2. Guhagarara neza mu bushyuhe bwinshi
Ubushyuhe bukoreshwa muri sisitemu yo gusohora imyuka itose muri rusange buri hagati ya 60-80°C aho imitsi irenga 120°C. SiC ceramic igumana 85% by'ubushyuhe bw'icyumba cyayo kuri 1400°C, irusha alumina ceramics (itakaza 50% by'ubushyuhe bwa 1000°C) n'ibyuma birwanya ubushyuhe. Ubushyuhe bwayo (120 W/m·K) butuma ubushyuhe bukwirakwira neza, bukarinda kwiyongera k'ubushyuhe.
3. Ubudahangarwa ku kwambara
Kubera ko Vickers ifite ubukana bwa 28 GPa n'ubukana bwo kuvunika bwa 4.6 MPa·m¹/², SiC igaragaza ubudahangarwa bukomeye bwo kurwanya isuri ku duce tw'ivu ry'umukungugu (Mohs 5-7). Ibizamini byakozwe mu murima bigaragaza ko imiyoboro ya SiC igumana ubusa <5% nyuma y'amasaha 20.000 yo gukora, ugereranije na 30-40% yo kwangirika mu miyoboro ya alumina ndetse no kwangirika burundu kw'ibyuma bitwikiriwe na polymer mu masaha 8.000.
4. Ibiranga imiterere y'umuvuduko w'amazi
Ubuso budatose bwa SiC ifite reaction-bond (inguni yo guhuza >100°) butuma habaho gukwirakwira kw'urubura neza hamwe n'agaciro ka CV <5%. Ubuso bwayo bworoshye cyane (Ra 0.2-0.4μm) bugabanya kugabanuka k'umuvuduko ho 15-20% ugereranije n'imiyoboro y'icyuma, mu gihe bugumana coefficients ihamye yo gusohora (±1%) mu gihe kirekire.
5. Uburyo bworoshye bwo kubungabunga
Ubusembwa bwa SiC butuma habaho uburyo bwo gusukura cyane burimo:
- Imodoka y'amazi ifite umuvuduko mwinshi (kugeza kuri bar 250)
- Gusukura hakoreshejwe uburyo bwa Ultrasonic hakoreshejwe imiti ya alkaline
- Gusukura umubiri hakoreshejwe umwuka ku bushyuhe bwa 150°C
Nta ngaruka zo kwangirika k'ubuso bikunze kugaragara mu minofuri y'icyuma irimo polymer cyangwa ipfundikiye.
6. Ubukungu bw'Ingengabihe y'Ubuzima
Nubwo ikiguzi cya mbere cy’imiyoboro ya SiC kiri hejuru ya 2-3× ugereranyije n’icyuma gisanzwe cya 316L, igihe cyacyo cyo gukora cy’imyaka 8-10 (ugereranyije n’imyaka 2-3 ku byuma) kigabanya inshuro zo gusimbuza ho 70%. Amafaranga yose y’ubwishingizi agaragaza ko azigamye 40-60% mu gihe cy’imyaka 10, nta gihe cyo gukora ku gusana aho hantu.
7. Guhuza ibidukikije
SiC igaragaza imikorere idasanzwe mu bihe bikomeye cyane:
- Ubudahangarwa bwo gusukura umunyu: 0% by'uburemere nyuma yo gupimwa amasaha 5000 ya ASTM B117
- Ikoreshwa ry'ikime cya aside: Ihangana n'umwuka wa H2SO4 wa 160°C
- Ubudahangarwa bw'ubushyuhe: Irakomeza imikorere yo kuzimya ubushyuhe bwa 1000°C →25°C
8. Imiterere yo kurwanya kwaguka
Imiterere ya atome ya SiC ikora ubuso butagira ingaruka ku buryo igipimo cyo gupima kiri munsi ya 80% ugereranije n’ubundi buryo bw’icyuma. Ubushakashatsi bwa crystallographic bugaragaza ko calcium na gypsum deposits bikora imigozi idakomeye (gufata <1 MPa) kuri SiC ugereranyije na >5 MPa ku byuma, bigatuma byoroha kubikuraho mu buryo bw’ikoranabuhanga.
Umwanzuro wa tekiniki
Ceramic ya silicon carbide igaragara nk'amahitamo meza y'ibikoresho byo gukoresha mu minofu ya FGD binyuze mu isuzuma ryimbitse ry'imikorere:
- Igihe cyo gukora kirenze 10× ugereranije n'ibindi bikoresho by'icyuma
- Kugabanuka kwa 92% mu kubungabunga ibintu bitateganijwe
- Kongera ubushobozi bwo gukuraho SO2 ku kigero cya 35% binyuze mu miterere ihoraho yo gutera imiti
- Kubahiriza byimazeyo amahame ngenderwaho ya EPA 40 CFR Igice cya 63 yo gusohora imyuka ihumanya ikirere
Bitewe n'ikoranabuhanga rigezweho mu gukora nk'imashini zitunganya amazi n'imashini zisiga CVD, imiyoboro ya SiC yo mu gisekuru gitaha irimo kugera ku buso bwa sub-micron ndetse n'imiterere y'ubuso igoye itari isanzwe iboneka muri za ceramic. Iri terambere ry'ikoranabuhanga rishyira silicon carbide nk'ibikoresho by'ingenzi mu gutunganya imyuka yo mu gisekuru gitaha.
Igihe cyo kohereza: Werurwe-20-2025