Umhlahlandlela wokukhethwa kwezinto ezibonakalayo we-FGD nozzles: kungani i-welicon carbiider ceramic ivelele

1. Ukumelana nokugqwala

FGD nozzlesSebenza ezindaweni ezihlanzeke kakhulu eziqukethe ama-sulfur oxides, ama-chlorides, namanye amakhemikhali anolaka. I-Alicon Carbide (Sic) Ceramic ibonisa ukumelana nokugqwayiza okuhlukile ngokulahleka kwesisindo esingaphansi kwe-0.1% kuzixazululo ze-Ph 1-14 (ngokuhlolwa kwe-ASTM C863). Uma kuqhathaniswa nensimbi engenacala (pren 18-25) kanye nama-alloys we-nickel (pren 30-40), i-sic igcina ubuqotho obuhlelekile noma ukugcwala kokugqwala okuhlanganisiwe ngisho nase-acidratures eguquguqukayo emazingeni okushisa avuthana nawo.

2. Ukuqina okuphezulu kokushisa

Amazinga okushisa okusebenza ezinhlelweni ezimanzi ze-flue gesi deselfurization ngokuvamile ibanga 60-80 ° C nge-spikes edlula 120 ° C. I-Sic Ceramic igcina ama-85% wamandla okushisa egumbini lokushisa egumbini lokushisa egumbini lokushisa ku-1400 ° C, ama-alumina ceramics (alahlekelwe ngama-50% amandla ngo-1000 ° C) kanye nensimbi engasho lutho. Ukusebenza kwayo okushisayo (120 W / m · k) kunika amandla ukudicilela phansi okusebenzayo kokushisa, ukuvimbela ukwakheka kwengcindezi okushisayo.

3. Gqoka ukumelana

Ngobulukhuni bama-vicklers abangama-28 GPA kanye nobunzima be-fracture of 4.6 Mpa · ¹ / ², i-sic ibonisa ukumelana nokuguguleka okuphezulu ngokumelene nezinhlanzi ezi-ash eziphakeme (Mohs 5-7). Ukuhlolwa kwensimu kukhombisa ukulondolozwa kwe-SIC nozzles

4. Izici zokugeleza

Ingaphezulu elingewona elimanzi lokuphendula elihlanganisiwe (i-angle yokuxhumana> I-100 °) inika amandla ukuhanjiswa okuqondile okuqondile ngamanani we-CV <5%. Indawo yayo ye-Ultra-bushelelezi (i-RA 0.2-0.4μM) yehlisa ingcindezi yehla ngo-15-20% uma iqhathaniswa nama-nozzles wensimbi, ngenkathi ugcina ama-coefficients ezinzile (± 1%) ngokuhlinzwa isikhathi eside.

5. Ukulungiswa Kweseluleko

Ukungena kwamakhemikhali kwe-Sic kuvumela izindlela zokuhlanza ezinolaka kufaka phakathi:

- I-Jet Ephakeme Yezingcindezi (Kufika ku-250 Bar)

- Ukuhlanza kwe-Ultrasonic nge-Alkaline Solutions

- inzalo ye-Steam ku-150 ° C

Ngaphandle kwengozi yokuwohloka komhlaba okuvamile okuvamile kuma-polymer-lided noma ama-nozzles wensimbi ahlanganisiwe.

I-6

Ngenkathi izindleko zokuqala zama-nozzles ze-spic × Izindleko zobunikazi eziphelele zibonisa ukonga ama-40-60%

7. Ukuvumelana kwezemvelo

I-Sic ikhombisa ukusebenza okungenakuqhathaniswa ezimweni ezimbi kakhulu:

- Ukumelana nosawoti

- Ukusebenza kwe-Acid Dew Point: Ukumelana nama-160 ° C H2SO4 Vapors

- Ukumelana nokushaqeka okushisayo: Kusinda ku-1000 ° C → 25 ° C Quent imijikelezo

8. Izakhiwo zokulwa nokulwa nokulwa

Ukwakheka kwe-athomu okumangazayo kwe-SIC kudala indawo engasebenzi nge-countaive nge amanani okukala 80% aphansi kunezenzo zensimbi. Izifundo ze-Crystalgraphic ziveza ukuthi ama-calcite ne-gypsum deposits afaka amabhondi abuthakathaka (adhesion <1 MPA) ku-sic versus> 5 MPA ngezinsimbi, enika amandla ukususwa okulula kwemishini.

Isiphetho Sezobuchwepheshe

I-Silicon Carbide Ceramic ivela njengokukhethwa okuhle kwezinto ezibonakalayo ze-FGD nozzles ngokusebenzisa ukuhlolwa kokusebenza okuphelele:

- Impilo eyi-10 × impilo ende yenkonzo kunezinye izindlela zensimbi

- Ukuncishiswa kwama-92% ekunakekelweni okungahleliwe

- Ukuthuthuka okungu-35% ekusebenzeni kahle kwe-SO2 ngamaphethini wokufafaza angaguquki

- Ukuhambisana ngokuphelele ne-EPA 40 CFR ingxenye yamazinga okuphuma angama-63

Ngamasu wokukhiqiza athuthukayo anjengesono esilinganiselwe se-CVD, ukuhlanganiswa kwe-CVD, ama-nozzles esizukulwane esilandelayo afinyelela endaweni engaphansi kwe-micron kuqeda futhi ama-geometries ayinkimbinkimbi ayengatholakali kuma-ceramics. Lokhu kuvela kwezobuchwepheshe kubeka i-Silicon Carbito njengento yokuzikhethela ezinhlelweni ezilandelayo zokuhlanza igesi.