CHNG CT HAI CU T
CHNG CT HAI CU T
NHM 2CBHD: GV. Hong Ngc HThnh vin:
Hunh Quang NhtNg Trn Hong DngTrn Vn Mongon c MinhTrng Khc Ph
CngNguyn c TrungTrn Th nh
Trn Th Kim XuynL Th KiuNguyn Anh HuyNguyn Minh HongNg Hng
NhungNg Anh Qunng oan Tng
Nhm 2Khoa KTHHNi dungTnh tonChng ct hai cu tGii thiu chungThit b
chng ctGii thiu chungChng ct l qu trnh tch hn hp lng thnh cc cu t
ring bit bng cch un si hn hp, tch hi to thnh ngng t.
C s qu trnh - Cng p sut: cu t no c nhit si thp hn th d bay hi
hn. - Cng nhit : cu t no c p sut hi ln hn th d bay hi hn.Chng ct c
dng nhiu trong nhiu nganh cng nghip.
Chng ct hai cu t Gi nh v cn bng pha Gi nh v nguyn l v iu kin hot
ng
Gi nh v cn bng phaH thng chng ct hai cu t c xem nh co h s bay hi
tng i khng i trong toan ct va gia cac mm ly thuyt . thi cn bng pha
h nc_axit aceticGi nh v nguyn l & iu kin hot ngNhp liu trang
thai long bao hoa ia th N vi tc la F (mol/phut)
Gi nh v nguyn l & iu kin hot ng nh thp va TBHL2.
y thp3.Gi nh v nguyn l & iu kin hot ngGi nh rng lng hi tch t
c th c b qua trong ton h 4.
Gi nh v nguyn l & iu kin hot ngKhi o, nhng ng lm vic trn gin
McCabe - Thiele quen thuc l nhng ng thng.Gia inh rng : rA = rB5. V
= V1 = V2 = V3 = = VNT
Gi nh v nguyn l & iu kin hot ngFL=3.33Lw(how)1.5Tc lng trong
ton b ct s khng ging nhau v mt ng lc hc. Cng thc thng c s dng lin h
gia lng lng tch t trn mm (M) vi tc dng lng ri khi mm (Ln): 6. Gi nh
v nguyn l & iu kin hot ngng lc hc ca thit b ngng t v thit b un
si s c b qua.7.
Xet mt quan h hm s n gin gia lng lng tch t v tc lng : Mn = f(Ln)
8. Thit b chng ct
S lu thng dng lng v hi trong ct chng ct
Thit b chng ctCc loi a thng c s dnga van
C th hn th xem file thit b chng ct km theo16TNH TON
Cc phng trnh lin tcC th hn th xem file thit b chng ct km
theo17Cc phng trnh lin tcTh nguyn quy c: [mol/thi gian]
1. Thit b ngng t v b hi lu
2. Mm nh (n=NT)
van
TNH TONC th hn th xem file thit b chng ct km theo183. Mm lin trc
mm nh (n=NT-1) 4. Mm th n
van
van
Cc phng trnh lin tcTh nguyn quy c: [mol/thi gian]
TNH TONC th hn th xem file thit b chng ct km theo195. Mm nhp liu
(n=NF) 6. Mm th nht (n=1)
van
Cc phng trnh lin tcTh nguyn quy c: [mol/thi gian]
TNH TONC th hn th xem file thit b chng ct km theo207. Thit b un
si v phn y ct chng 8. Thit b iu khin mc lng trn phn y ct v b hi lua
D=f1(MD) B=f2(MB) van
Cc phng trnh lin tcTh nguyn quy c: [mol/thi gian]
TNH TONC th hn th xem file thit b chng ct km theo21Hai n s c th
c iu chnh: dng hi lu R v dng hi si V (hoc nhit c a vo thit b un si
li). R= f1(xD) V=f2(xB) Cc phng trnh lin tcTh nguyn quy c: [mol/thi
gian]
TNH TONC th hn th xem file thit b chng ct km theo22Ti liu tham
kho
Luyben_ W. L. - Process Modeling_ Simulation and Control for
Chemical Engineers (1989)
V B Minh - K thut phn ng NXB i hc quc gia TPHCM
Trnh Vn Dng - Bi ging Truyn khi - i hc Bch Khoa TPHCM
Thank You !
C th hn th xem file thit b chng ct km theo24
