Ukukhethwa kwemishini yokugaya amalahle 1: isigayo samalahle esinesivinini esiphansi

Ummeleli ojwayelekile wesigayo samalahle esinesivinini esiphansi umshini wokugaya ibhola.Umgomo wokusebenza uthi: injini enamandla amakhulu edlula ku-gearbox ukuze ishayele lokhu kuzungezisa kwepuleti eliyindilinga elisindayo, ibhola lensimbi endaweni elula lizungeziswa libe ukuphakama okuthile bese liwela phansi, ngomthelela webhola lensimbi elahleni naphakathi. ibhola lensimbi, phakathi kwebhola lensimbi nepuleti lonogada, amalahle ayagaywa.Ilahle elimahhadla kakhulu elingafanelekile liyahlukaniswa uma ligeleza kusihlukanisi sempushana emahhadla ngemuva kwesigayo sebhola, bese sithunyelwa epuleti eliyindilinga lisuka eshubhu lempushana elibuyayo ukuze ligaywe kabusha.Ngaphezu kokuthutha impushana yamalahle, umoya oshisayo nawo udlala indima yokomisa amalahle.Ngakho-ke, umoya oshisayo ubizwa nangokuthi i-desiccant ohlelweni lwe-powder.Umkhiqizo unezici zesikhathi eside sokusebenza okuqhubekayo, ukugcinwa okulula, ukukhishwa okuzinzile nokuqina, umthamo omkhulu wokugcina, impendulo esheshayo, ukuguquguquka okukhulu kokusebenza, isilinganiso esiphansi somoya wamalahle, ukonga umshini wamalahle wokulondoloza, ububanzi obubanzi bokugaya amalahle nokunye.Isetshenziselwa ikakhulukazi amalahle aqinile naphakathi nendawo, ikakhulukazi amalahle anokuqukethwe okuguquguqukayo okuphezulu kanye nempahla egwazayo eqinile.Kodwa-ke, lesi sigayo sebhola esinejubane eliphansi sikhulu, sisebenzisa insimbi enkulu, sithatha indawo enkulu, futhi sinokutshalwa kwezimali okuphezulu kokuqala.Ngakho-ke isigayo sebhola sifanele ukusebenza komthwalo ogcwele.

Uhlobo 2 lwemishini yokugaya amalahle:isigayo samalahle esinesivinini esiphakathi 

Isigayo samalahle esinesivinini esimaphakathi saziwa nangokuthi isigayo samalahle esime mpo, esibonakala ngezingxenye zokugaya ezakhiwe ngamaqembu amabili okunyakaza okuhlobene komzimba wokugaya.Amalahle ayakhanywa futhi agaywe phakathi kwezindawo ezimbili zokugaya bese ayachotshozwa.Ngesikhathi esifanayo, umoya oshisayo odlula emshinini womisa amalahle futhi uthumela amalahle agaywe emshinini wokuhlukanisa engxenyeni engenhla yendawo yokugaya.Ngemva kokuhlukana, ilahle eligayiwe lobukhulu bezinhlayiyana ezithile likhishwa emshinini ngokugeleza komoya, futhi amalahle agaywe amalahle abuyiselwa endaweni yokugaya ukuze agaywe kabusha.Isigayo samalahle esinesivinini esimaphakathi sinezinzuzo zemishini ehlangene, unyawo oluncane, ukonga ukusetshenziswa kwamandla (cishe u-50% ~ 75% we-ball Mill), umsindo ophansi, ukulawulwa kokusebenza okulula nokuzwelayo.Kodwa akufanelekile ukugaya amalahle aqinile.

Ukukhethwa kwemishini yokugaya amalahle 3: isigayo samalahle esinesivinini esikhulu

Ijubane lesigayo samalahle esinesivinini esikhulu ngu-500~ 1500 r/min, elakhiwe ikakhulukazi i-rotor enesivinini esikhulu kanye negobolondo lokugaya.Ukugaya abalandeli okuvamile nokugaya isando nokunye.Esigayweni, amalahle achotshozwa ukungqubuzana phakathi kwesivinini esikhulu kanye negobolondo lokugaya kanye nokushayisana kwamalahle.Lolu hlobo lwesigayo samalahle kanye nesihlukanisi samalahle esigayiwe sakha lonke, isakhiwo silula, sihlangene, utshalomali lokuqala luphansi, lufaneleka ngokukhethekile ukugaya i-lignite yomswakama ophezulu kanye nokuqukethwe okuphezulu okuguquguqukayo, kulula ukugaya amalahle e-bituminous.Kodwa-ke, ngenxa yokuthi ipuleti lomthelela liguguleka ngokuqondile futhi ligqokwa ukugeleza komoya, impilo yalo yesevisi ngokuvamile iba ngu-1000h kuphela lapho kugaywa i-lignite, ukushintshwa njalo, futhi okuqukethwe kwamanzi amalahle aphansi akufanele kube phezulu kakhulu, ngokuvamile asetshenziselwa ama-boilers ashaywayo aqondile ezitshalweni zamandla, futhi akufanele asetshenziselwe imihlangano yokusebenzela yokujova isithando somlilo.

Izinhlobo ezintathu ezingenhla zokukhethwa kwemishini yokugaya amalahle zinezinzuzo kanye nokubi, ekukhethweni kwemishini yokugaya amalahle, kuyadingeka ukucabangela ukukhethwa okuphelele kwesistimu yokugaya.Uhlelo lwempushana lungahlukaniswa ngezigaba ezimbili: uhlobo olushayayo oluqondile kanye nohlobo lwesitoreji esimaphakathi (okubhekiselwa kulo njengohlobo lwesitoreji).Ohlelweni lokugobhoza okuqondile, amalahle agaywa abe amalahle agaywe ngomshini wamalahle abese ephephezelwa ngqo esithandweni ukuze ashiswe.Ohlelweni lokugcinwa kwe-pulverization, amalahle agxotshiwe agcinwa kuqala emgqonyeni wamalahle ohlutshiwe, bese ngokwezidingo zomthwalo webhayela, amalahle agxotshiwe athunyelwa emgqonyeni wamalahle agxotshiwe aye esithandweni ukuze ashiswe yi-pulverizer.Izinhlelo ezihlukene zokugaya amalahle nazo zifanelekile ezinhlotsheni ezahlukene zokukhetha imishini yokugaya amalahle.Ngokohlelo lokugaywa kwamalahle, sifinyeze isisekelo esilandelayo sokukhethwa kwesigayo samalahle:

(1) Isigayo sebhola lensimbi emgqonyeni wesitoreji ophakathi uhlobo lwesistimu yempushana yomoya oshisayo: ingasetshenziselwa i-anthracite (Vsr<9%) futhi igqoke okuqinile ngaphezu kwamalahle.

(2) Isitoreji esiphakathi kwe-ball mill exhaust gas powder delivery system: ikakhulukazi esetshenziselwa amalahle anokugqoka okuqinile nokuguquguquka okuphakathi (Var-19% ~ 27%) amalahle e-bituminous.

(3) I-double in double-out steelball out-out steel ball mill direct blowing system 22-241: for medium-high volatile (Vs.7-27% ~ 40%) amalahle e-bituminous.

(4) Isistimu yokuvuthela ngokuqondile yomshini wamalahle wesivinini esimaphakathi: ilungele ukugaya amalahle e-bituminous anokuqukethwe okuphezulu okuguquguqukayo (Vanr-27%~40%), umswakama ophezulu (umswakama wangaphandle Mp≤15%) nokuguga okuqinile, kanye namalahle ukulahlekelwa okungamanga okungaphansi kwamandla, ukusebenza kokuvutha kwamalahle kuyavutha, futhi ukucoliseka kwamalahle okugayiwe kuhlangabezana nezimfuneko zesigayo samalahle.

(5) Isistimu yokuvuthela eqondile yesigayo: ilungele ukuguguleka kwenkomba ye-lignite Ke≤3.5 kanye no-50 MW nangaphansi kukabhayela weyunithi yamalahle