Yini iScraped Surface Heat Exchanger?

Yini iScraped Surface Heat Exchanger?

I-Scraped Surface heat exchanger: Isimiso, isicelo kanye nentuthuko yesikhathi esizayo

I-scraped surface heat exchanger iwuhlobo lwemishini esebenza kahle yokushintshanisa ukushisa, edlala indima ebalulekile ezimbonini zokudla, zamakhemikhali, ezemithi nezinye. Ngesakhiwo esiyingqayizivele somshini kanye nemodi yokusebenza, lolu hlobo lwesishintshi sokushisa luxazulula inkinga yesishintshi sokushisa esivamile ekubhekaneni ne-viscosity ephezulu kanye nezinto ezilula zokukala. Leli phepha lizohlaziya kabanzi isishintshisi sokushisa se-scraper, okokusebenza okubalulekile kwezimboni, kusukela ezicini zesimiso sokusebenza, izici zesakhiwo, izinkambu zokufaka isicelo kanye nezitayela zentuthuko zesikhathi esizayo.

 Okokuqala, isimiso sokusebenza kanye nesakhiwo sesishintshi sokushisa esiklwetshiwe

Umgomo oyinhloko wokusebenza kwesishintshi sokushisa esigxotshiwe wukukhuhla ngokuqhubekayo indawo yokushintshanisa ukushisa ngokuzungezisa isikrufu ukuze kuzuzwe ukudluliswa kokushisa okusebenzayo. Isakhiwo esiyisisekelo sihlanganisa umzimba we-cylindrical heat exchanger, shaft ejikelezayo, ukuhlanganiswa kwe-scraper, idivayisi yokushayela kanye nesistimu yokuvala. Umzimba wesishintshi sokushisa uvamise ukuba yisakhiwo esinezendlalelo ezimbili, kanti indawo yokushisisa noma yokupholisa idluliselwa phakathi nendawo. I-shaft ejikelezayo ifakwe ubuningi be-scrapers, eseduze nodonga lwangaphakathi lwesilinda ngaphansi kwesenzo samandla we-centrifugal futhi iqhube ngokuqhubekayo indawo yokudlulisa ukushisa ngokujikeleza kwe-shaft.

 Ngesikhathi senqubo yokusebenza, izinto ezizophathwa zingena endaweni yokushisa zisuka engxenyeni engenhla bese zigeleza phansi odongeni lwangaphakathi lwesilinda ngaphansi kwesenzo sobunzima. I-scraper ejikelezayo ayidlali nje indima yokuxuba, kodwa okubaluleke nakakhulu, ivuselela njalo ifilimu yezinto ezibonakalayo endaweni yokudlulisa ukushisa ukuze ivimbele izinto ekuphekeni noma ezilinganisweni endaweni yokushisa ephezulu. Le ndlela yokuvuselela ifilimu eguquguqukayo ivumela izishintshi zokushisa eziklwetshiwe ukuthi zifinyelele ukusebenza kahle kokudlulisa ukushisa, ngokuvamile kufika izikhathi ezi-3-5 kunezishintshisi zokushisa ezivamile.

 Ingxenye eyinhloko ye-scraped surface heat exchanger yisistimu ye-scraper, umklamo wayo othinta ngokuqondile ukusebenza kwemishini. Izishintshi zokushisa zesimanje eziklwetshiwe ngokuvamile zisebenzisa i-scraper eguquguqukayo, ngokusebenzisa amandla entwasahlobo noma e-centrifugal ukulungisa ingcindezi yokuxhumana phakathi kwe-scraper nodonga lwesilinda, hhayi kuphela ukuqinisekisa umphumela omuhle wokukhuhla, kodwa futhi nokugwema ukuguga ngokweqile. Uhlelo lokubeka uphawu luyingxenye ebalulekile, kokubili ukuvimbela ukuvuza kwezinto ezibonakalayo, kodwa futhi nokuqinisekisa ukusebenza kahle kwe-shaft ejikelezayo.

 

Okwesibili, izinzuzo zobuchwepheshe kanye nemikhawulo yokushintshisana kokushisa okukhutshiwe

Inzuzo ebaluleke kakhulu yomshini wokushisa we-scraper yikhono layo lokuphatha izinto ezibucayi kakhulu, ezizwela ukushisa. Emkhakheni wokucubungula ukudla, njengokukhiqizwa kwe-puff pastry margarine, ushokoledi, ujamu, ushizi neminye imikhiqizo, umshini wokushisa wendabuko kunzima ukuhlangabezana nezidingo zenqubo, futhi i-scraper heat exchanger ingakwazi ukuxazulula lezi zinkinga ngokuphelele. I-coefficient yayo yokudlulisa ukushisa ingafinyelela ku-2000-5000W/(m²·K), ephakeme kakhulu kunegobolondo elivamile nesishintshi sokushisa seshubhu.

 

Uma usebenzisana nezinto ezilula ukukala, izinzuzo ze-scraper heat exchanger zisobala kakhulu. Embonini ye-petrochemical, uwoyela osindayo, i-asphalt nezinye izinto kulula ukupheka endaweni yokudlulisa ukushisa ngesikhathi sokushisa, futhi abashintshi bokushisa bendabuko badinga isikhathi sokuphumula esivamile sokuhlanza. Umshini wokushisa we-scraper ngokusebenzisa umphumela wokugaya oqhubekayo, ukuvimbela ngokuphumelelayo ukwenzeka kwe-coking, ukwandisa kakhulu isikhathi sokugijima esiqhubekayo.

 

Kodwa-ke, ama-exchanger okushisa aklwetshiwe nawo anemikhawulo ethile. Eyokuqala yizindleko eziphezulu zemishini, ngenxa yesakhiwo sayo esiyinkimbinkimbi kanye nezidingo zokucubungula ukunemba, ukutshalwa kwezimali kokuqala kukhulu kakhulu kunokushintshanisa ukushisa okujwayelekile. Okwesibili, izindleko zokulungisa ziphakeme, futhi i-scraper ne-seal izingxenye ezisengozini futhi zidinga ukushintshwa njalo. Ngaphezu kwalokho, lapho usebenza ngezinto eziphansi ze-viscosity, izinzuzo zayo azibonakali, kodwa zingase zikhulise ukusetshenziswa kwamandla ngenxa yokuxuba kwemishini.

 

Okwesithathu, inkambu yokufaka isicelo kanye nokuthuthukiswa kwesikhathi esizayo kwesishintshi sokushisa esigxotshiwe

Embonini yokudla, izishintshi zokushisa ezikhuhliwe zisetshenziswa kakhulu ekwenzeni ushokoledi, ukuvala inzalo yejamu, i-crystallization yebhotela nezinye izinqubo. Isibonelo, ekukhiqizeni ushokoledi, izinto ezibonakalayo zidinga ukulawulwa ngokunembile phakathi kwebanga elithile lokushisa lokwelashwa kokulawula izinga lokushisa, futhi isishintshi sokushisa se-scraper singafinyelela ukulawulwa okunembile kwezinga lokushisa kanye nokushintshaniswa kokushisa okufanayo ukuze kuqinisekiswe ikhwalithi yomkhiqizo.

 

Emkhakheni wezimboni zamakhemikhali, izishintshi zokushisa ezikhuhliwe zisetshenziswa kakhulu ekukhiqizeni i-polymer, ukushisa kwamafutha anzima nezinye izinqubo. Ekukhiqizeni i-polymer, i-viscosity yezinto ezibonakalayo iyashintsha ngenqubo yokusabela, okunzima ukuzivumelanisa nomshini wokushisa wendabuko, kodwa umshini wokushisa we-scraper ungahlala ugcina ukudluliswa kokushisa okuphumelelayo. Enkambweni yokuhlanza i-petroleum, i-scraper heat exchanger isetshenziselwa ukushisa amafutha anzima, i-asphalt nezinye izinto, ezixazulula inkinga yokupheka.

 

Ngokuzayo, ukuthuthukiswa kwezishintshi zokushisa ezikhuhliwe kuzothuthuka ngendlela yobuhlakani, ukusebenza kahle okuphezulu kanye nemisebenzi eminingi. Ngokuphathelene nobuhlakani, izinzwa ezengeziwe nezinhlelo zokulawula zizohlanganiswa ukuze kuzuzwe ukuqapha kwesikhathi sangempela nokulungiswa okuzenzakalelayo kwemingcele yokusebenza. Ukuthuthukiswa kwesayensi yezinto zokwakha kuzoletha izinto ezintsha ezingagugi futhi zimelana nokugqwala futhi kwandise impilo yesevisi yemishini. Ngaphezu kwalokho, ukuklama kwe-modular kuzoba umkhuba wokusiza ukugcinwa nokuthuthukiswa kwemishini.

 

Njengohlobo lwemishini yokushintshanisa ukushisa esebenzayo, isishintshi sokushisa se-scraper sidlala indima engenakushintshwa ekukhiqizeni kwezimboni zanamuhla. Ngokuqhubeka okuqhubekayo kobuchwepheshe, inkambu yohlelo lwayo izonwetshwa ngokwengeziwe, futhi ukusebenza kwayo kuzoqhubeka nokuba ngcono. Ngokuzayo, i-scraper heat exchanger izokwenza iminikelo emikhulu ekongeni amandla kanye nokunciphisa ukukhishwa kwe-emission, ithuthukise ukusebenza kahle kokukhiqiza, futhi inikeze ukwesekwa okuqinile kokuthuthukiswa okuqhubekayo kokukhiqizwa kwezimboni.