KHOA HOC CbNG N G H | IXIGHIEIM Ciiu cdiVG I M G H £ S A Y D U O I V G T H L ) CdlVG TREIV IVIAY SAV THUIVIG QUAY Nguy&n Tin ThinhS Tdn Thdt Minh^ T6M TAT Say ducmg dcing vai tro quan trcMig san xu;il ducmg Nghidn ciiu cAng ngb^ s£iy duong tr^n may say thiing quay Goai tiiiet bi thich hrrji s.iy duini^j; cr quy mo nho va vua) nhciin muc dich tim mpt ch€' dc) say thich hcri) cho inot san pliAni co ch.it knmg cao, tieu thu it nang lucTug va thcri gian say la ngan nhat Cac thong s("i chinh anh hucing don cjua tnnh say va mirc anh hurmg cua chiing sir dung nghien ciiu la: Nhiet tac nhAn say i'\ CC)(7() 80°-9() ); tc)c dp tac nhan sfiy V On/s) (1-2-3) va tdc d Xit „ = -0.25 Viy nhidt tdi uu T = To + A-rXit.^ Trong dd Aj li chdnh lech nhidt tii gii tri tim den gii tri bidn trdn vi ducri (Ax = lO^C) =>T= 80+(-0.25) 10 = 77.50c + ) Y ^ =-0.21-0.37.2x2,^ = => X2tu = -0,3 Viy tdc tic nhin say tdi uu : V = Vo + Av X2t„ Trong dd Ay li dd chdnh lech tdc tic nhin say tii gii tri tim den gii tri bidn trdn vi dudi (Ay = m/s) =>V=2+(-0,3).l = l , m / s Tdc tic nhin say: V = 1.7m/s Tdc vdng quay cua thiing: n = vg/ph VcM thdi gian say t = 16.78 phiit IV KET LUAN Nghien ciiu eong nghd say dudng trdn miy say tilling quay d i cho ket qua sau diy: Di nghidn ciiu, chd tao dugc 01 thidt hi say thiing quay dd nghidn ciiu eong nghd say dudng (Cic tinh toin khong trinh biy d day) Thidt bj cd the didu chinh tiiay ddi cic thong sd mgt cich chinh xic cho qui trinh nghidn ciiu nhu t"„ Y^J"^', n^^^ Thidt bi cd thd ling dung vao san xuat vcM ning suat 200-300 kg dudng/h Da xiy dung dugc mo hinh toan hgc cho qua trinh say: Y = 16,73 - 0,19xi - 0,21x2 - 0,37x1^ - 0,34x2^ - 0,21x3^ Vi tli phuong trinh toin hgc hdi quy thuc nghidm niy di xic dinh dugc cic thong sd tdi uu co ban ciia qui trinh li: Nhidt tic nhin sdy: T = 77,5*'C; tdc tic nhin say: V = l,7m/s; tdc vdng quay ciia thiing: n = vg/ph Thdi gian say (Him muc tieu ciia qui trinh) ung vcM cac thong sd tdi uu trdn li x = 16,78 phiit cho sin pham tring, dep, toi vi cd am w = 0,061% Thiet bi say thiing quay li thiet bi thich hcyp de say dudng thu eong cung nhu say ducing d cic co sd sin xuat quy mo nhd vi vira, ngoii thiet hi cdn cd the sdy duoe nhieu loai sin pham khic nginh eong nghd thuc pham vi sin pham cua cic nginh khic +)Y,3 = -2.0,21x3t„ = => X3H, = Viy gii tri tdi uu cua thong sd X3 chinh li gii tri sd vdng quay eua thiing tai tim ciia thi nghidm (n = vdng/phiit) Tir cic gii trdn ta xic dinh dugc thdi gian sdy tdi uu l i y = 16,78 (phiit) Nhu viy, tir mo hinh cua q u i trinh sdy li phuong trinh hdi quy bic hai: Y = 16,73 - 0,19xi - 0,21x2 - 0,37xi2 - 0,34x2^ - 0,21x3^ D i xic dinh dugc ehe sdy dudng tdi uu ti'dn miy sdy thung quay vdi cic thdng sd cdng nghd: Nhidt tie nhin sdy: T = 77,5"C T A I UEU THAM KHAO Nguydn Vin May, 2002 Ky thuat siy ndng sin tiiucph^ NXB Khoa hgc - Ky tiiuit HN Nguydn Minh Tuyen Quy hoach tiiuc nghidm Nhi xudt ban Khoa hgc Ky thuat Arum Mujumdar, Marcel Decker Publications Handbook of Drying Technologies Perry Chemical Engineering Handbook K Rastikian, R Capart and J Benchimol Modelling pf suger drying in countercurrent cascading rotary dryer from stationary protiles of temperature and moisture NONG NGHIEP VA PHAT TRIEN NONG THON - KY - THANG 2/2012 59 KHOA HQC CbNG N G H £ RESEARCH ON SUGAR DRYING TECHNOLOGY ON DRYER DRUM Nguen Tan Thanh, Ton That Minh Summary Drying sugar plays an important role in sugar producUon, research sugar drying technology on dryer drum (appropriate equipment di-ycr in small and medium iiroducUon) purpose of finding an appropriate drying regime for a high quality product, less energy consumption and the shortest drying time The main parametei-s affecting the diying process and llic^ impact of their use in research is: temperature drying agent t", (°C) (70°- 80°-90°); speed diying agent V (m/s) (1-2-3) and speed of rotation of dmm n (rpm) (2-4-6) By the experimental method to find opUmal, has built quadratic regression mathematical equations Y = 16.73- 0.19X1-0.21X3- 0.37X,^- 0.34X0^- 0.21X:,' detennined the optimal parameters of the process is t", = 77.5°C; V = 1.7 m/s; n = rpm product quality and high economic efficiency with drying time is T = 16.78 minutes On the other, this topic has designed and built a complete dnim dryer capable of deploying to production Equiment suitable for sugar producUon base of small and medium scale and can drying many different types of products as tea coffee, tobacco, food grains and other pharmaceutical products, etc Keywords: Sugar drying, rotary drum drier, small scale Ngudi phan bi^n: GS.TSKH Ph^un Vin Lang 60 NONG NGHIEP VA PHAT TRIEN NONG THON - KY - THANG 2/201J ... tic nhin say: V = 1.7m/s Tdc vdng quay cua thiing: n = vg/ph VcM thdi gian say t = 16.78 phiit IV KET LUAN Nghien ciiu eong nghd say dudng trdn miy say tilling quay d i cho ket qua sau diy: Di... nhin Ra khdi thiing say sin pham dugc cho vio bao huge kin vi dua di xic dinh am cudi Say thiing quay li qui trinh lien tue, vide lay mau ndn lay lam lan eho mdt me say de dam bao ehinh xic xic... xic dinh am Cic ket qui thi nghidm: Nhidt tic nhin say (t",-°C) tdc ciia tie nhin say (V-m/s) tdc quay ciia thiing (n-v/p), thdi gian say (x) dd am dau vi am cudi cua vit hdu nhung thay ddi Bing