I-Silicon carbide (SiC) Burner nozzles

Ezinqubweni zokushisa okuphezulu lapho ukulawulwa kwamanzi, ukumelana nokuguguleka, nokuzinza kokushisa kubaluleke kakhulu,i-silicon carbide (SiC) imibhobhogqama njengesimangaliso sobunjiniyela. Ngokungafani nemibhobho ye-ceramic ejwayelekile noma yensimbi, izici ezihlukile ze-SiC zibhekana nezinselele ekushiseni, ekuqhubekiseni, nasezinhlelweni zokufafaza zezimboni. Lesi sihloko sihlola ukuthi kungani izimboni zanda zamukela imibhobho ye-SiC ukuze ziguqule ukusebenza ezinhlelweni ezifunwa kakhulu.

1. Iklanyelwe Imvelo Enoketshezi Oluningi

Imibhobho ye-SiC ihamba phambili ekulawuleni isivinini esikhulu, uketshezi olunezinga lokushisa eliphezulu namagesi:

(1) Ukumelana nokuguguleka: Ukumelana nezinhlayiya ezilimazayo kuma-injection amalahle e-slurry, amasistimu we-sandblasting, noma ama-rocket propellants ngaphandle kokuguqulwa okugugile.

(2) Ukusinda Kwe-Thermal Shock: Umjikelezo osheshayo phakathi kwamazinga okushisa adlulele (isb. umjovo kaphethiloli ezithandweni zensimbi) ngaphandle kokuqhekeka, ngenxa yokwanda okuphansi kwezinga lokushisa kwe-SiC.

(3) Ukungangeni Kwekhemikhali: Melana nokugqwala okuvela kuzifutho ezine-acidic/alkaline, usawoti oncibilikisiwe, noma amalangabi akhipha i-oxidizing, qinisekisa ukuthi i-orifice geometry ingaguquki.

2. Ukulawula Ukugeleza Okunembayo Kwezinqubo Ezibucayi

Kuzinhlelo zokusebenza ezifuna ukunemba kwezinga le-micron, imibhobho ye-SiC iletha ukwethembeka okungenakuqhathaniswa:

(1) Ijiyomethri ye-Orifice Ezinzile: Gcina izinga lokugeleza elinembile namaphethini wokufafaza ngisho nangemva kokuchayeka isikhathi eside ku-1500°C+ izindawo, ngokungafani nezinsimbi ezijikayo noma izitsha zobumba eziwohlokayo.

(2) Ukuvala Okuncishisiwe: Ukuqedwa kwendawo ebushelelezi kakhulu kunciphisa ukwakheka kwezinto kuma-injection kaphethiloli noma amasistimu wokufuthwa kwamakhemikhali.

(3) Ukubekezelela Ukucindezela Okuphezulu: Ukumelana nezingcindezi ze-hydraulic ezingaphezu kuka-500 MPa, ilungele ukusika i-waterjet noma i-aerospace propulsion.

3. Ukunika amandla amandla okushisa aphezulu

Imibhobho ye-SiC ibalulekile ekuthuthukiseni amasistimu omlilo asebenzisa amandla amaningi:

(1) Ukuzinza Kwelangabi: Idizayini ekwazi ukumelana nokushisa iqinisekisa ukuxutshwa okufanayo komoya kaphethiloli kumaturbine egesi noma izishisi zezimboni, kunciphisa izindawo ezishisayo kanye nokukhishwa kwe-NOx.

(2) Ukuguquguquka kwesibaseli: Ihambisana ne-hydrogen, ama-biofuels, noma amafutha asindayo, asekela ukushintshela emithonjeni yamandla esimeme.

(3) Ukusebenza kahle Kokushisa: Nciphisa ukulahlekelwa ukushisa ngezindonga ngenxa ye-thermal conductivity ephezulu ye-SiC, uthuthukise ukusebenza kahle kwegumbi elivuthayo ngokufika ku-15%.

I-Shandong Zhongpeng Special Ceramics Co., Ltd ingesinye sezixazululo ezintsha ze-silicon carbide zobumba eChina. I-ceramic yobuchwepheshe ye-SiC: Ubulukhuni be-Moh buyi-9 (ukuqina kwe-Moh entsha yi-13), enokumelana okuhle nokuguguleka nokugqwala, ukuhuzuka okuhle kakhulu – ukumelana ne-oxidation. Impilo yesevisi yomkhiqizo we-SiC iyinde izikhathi ezi-4 kuya kwezi-5 kune-alumina material engu-92%. I-MOR ye-RBSiC izikhathi ezi-5 kuye kweziyi-7 kune-SNBSC, ingasetshenziselwa izimo eziyinkimbinkimbi. Inqubo yekhotheshini iyashesha, ukulethwa kunjengoba kuthenjisiwe futhi ikhwalithi ingeyesibili. Sihlala siphikelela ekuphonseni inselelo imigomo yethu futhi sibuyisele izinhliziyo zethu emphakathini.