design co treatment by nitro liquid
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8/3/2019 design CO treatment by nitro liquid
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 1
NHM 16_LP K43KTM01
Ch n cn nhiu sai xt
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 2
Phn I. TNG QUAN
I. M u.
- Trong cng nghip ho cht c rt nhiu nguyn liu dng kh c dng,
cng nh nhiu sn phm thu c dng kh. Mun tip tc gia cng ch bin
cc hn hp kh, ta phi tch chng thnh tng cu t. V d nh sau khi ho than
ta thu c hn hp kh gm N2, H2, H2S, CO, CO2mun s dng hn hp kh
ny vo mc ch tng hp NH3 sn xut ure, ta phi tch ring tng cu t.
- Hp th l qu trnh ht kh bng cht lng. kh c ht gi l cht b hp
th, cht lng ht gi l dung mi (hay cht hp th), kh khng b hp th gi l
kh tr. Qu trnh hp th c dng :
+ Thu hi cc cu t qu .
+ Lm sch kh.
+ Tch hn hp kh thnh cc cu t ring bit.
- Qu trnh th nht v th ba, bt buc ta phi tin hnh nh sau khi hp th
tch cu t hp th c ra khi dung mi. i vi cc trng hp khc, qu
trnh nh l khng cn thit, tr khi phi dng li dung mi(dung mi qu).
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 3
II. Tnh cht ho l v tc hi ca kh cn x l.
II.1 Tnh cht ho l ca cacbon monooxit.
- Cng thc phn t :CO.
- Phn t lng :44.
- Cng thc cu to :C=O
- Nhit si :-191.5oC.
- Gii hn chy trong khng kh :12 75% th tch
- Trng lng ring:1.25g/l 00C, 1 atm. :1.145g/l 250C, 1 atm.
- T trng so vi khng kh l :0.967
- L cht kh khng mu, khng mi, khng v, nh hn khng kh.
- D chy trong khng kh vi ngn la mu xanh sng.
- Ho tan trong nc :
00c ,1atm..3.54ml/100ml.250c ,1atm2.14ml/100ml.
370c ,1atm.1.83ml/100ml.
- Ho tan trong mt s dung mi hu c : ethyl acetate, methyl chloride, acetic
acid, ho tan trong methanol gp 7 ln trong nc.CO l mt kh c.
II.2 Tc hi ca kh CO
a)Tc hi ca kh CO i vi mi trng:
- Gp phn tng hiu ng nh knh CO2 v :CO + 1/2O2 = CO2
CO l mt kh c, nh hng n sc khe cho sinh vt v con ngi.
b) Tc hi ca kh CO ln sc kho con ngi:
- CO l mt kh rt c.
- N phnng (c i lc) rt mnh vi hng cu trong mu to ra cacboxy
Hemoglobin (COHb):
Hb + CO HbCO + O2
- Hn hp HbCO lm gim lng oxy trong mu , ngn cn hp th v vn
chuyn oxy nui c th.
- Hm lng COHb trong mu t 2 5% bt u c du hiu nh hng n
h thn kinh trung ng. Khi hm lng COHb trong mu tng n 10 20% cc
chc nng hot ng ca c quan khc trong c th b tn thng. Nu hm
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 5
Bng 1: Triu chng ca c th ng vi nng Cacboxy Hemoglobin trong
mu.
TT Triu chng %COHb trong mu
1 Khng c du hiu g < 1.0 %
2 Mt vi trng thi bnh thng trong thi
ng x.
1.0 2.0 %
3 nh hng n h thn kinh trung ng, gim
kh nng phn bit v khong cch, km nhy
cm gic quan km phn bit sng v mt
vi chc nng tm l khc
2.0 5.0 %
4 Chc nng tim phi b nh hng 5.0 10.0 %
5 au u nh, gin mch mu ngoi vi 10.0 20.0 %
6 au u, mp my thi dng 20.0 30.0 %
7 au u nhiu, mt mi, hoa mt chng mt,
bun nn, nn ma v suy sp
30.0 40.0 %
8 Suy sp, ngt, mch p v nhp th chm
dn
40.0 50.0 %
9 Ngt, gim mch p v nhp th, hn m v
co git tng cn
50.0 60.0 %
10 Hn m, co git tng cn, tim mch suy gimv nguy c t vong
60.0 70.0 %
11 Mch yu, th chm v yu dn v tt th sau
vi gi.
70.0 80.0 %
12 Cht trong vng < 1 ting ng h 80.0 90.0 %
13 Cht trong vng vi pht >90.0 %
(Ngun: Ti liu [1])
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 6
III. Cc phng php x l hin nay.
III.1 Phng php t:
- nguyn tc : CO + O2 CO2
- phn ng xy ra gn 10000C c th tn dng nhit do phn ng sinh ra .
- Phn ng c xc tc cha Cu v cc kim loi khc.
- Khi hm lng CO thp O2cao kh c t trong bung t ni hi.
- Khi c xc tc nhit gn 5000C phnng gia CO v nc nh sau:
CO + H2O CO2 + H2 + 9.5 kcal
- C th s dng xc tc l hn hp cc oxt ca st v Crom(87 % Fe2O3 v
65 % Cr2O3) vi cc cht MgO v K2O c chc nng kch thch phn ng.
u im:
+ C th tn dng nhit do phn ng sinh ra.
Nhc im:+ Trong dng kh thi thng c nhiu kh khc c th l cht
c xc tc lm qu trnh x l hiu qu khng cao.
III.2 Phng php hp th:
- s dng phng php hp th, s dng mt trong cc dung dch hp th.
+ Nit lng.
+ Dung dch [Cu(NH3)m(H2O)n]+.
+ Dung dch Clorua ng nhm CuAlCl4.III.2.1 Hp th bng dung dch[Cu(NH3)m(H2O)n]
+.
[Cu(NH3)m(H2O)n]+ + xNH3 + YCO [Cu(NH3)m+n(CO)y(H2O)n]
+ + Q
- Tu theo tng nng ca phc, tng p sut ca CO, gim nhit , th
kh nng hp th tng.
u im:
+ Hp th ha hc Vn tc hp th nhanh.
Nhc im:
+ Xy ra hp th ha hc sinh ra cc ha cht th cp c th l
cc cht nhim th cp.
+ hp th ho hc kh nh hp th.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 7
III.2.2 Hp th bng clorua ng nhm CuAlCl4 (20 50 %) v (80 90 %)
toluen.
CuCl + AlCl3 +2C6H5Cl3 (CuAlCl4)(C6H5CH3)2
Sau :
(CuAlCl4)(C6H5CH3)2 + 2CO (CuAlCl4).2CO + 2C6H5CH3
- Cc kh CO2 , O2 , N2 , H2 khng tham gia phn ng vi phc CuAlCl4
nhng hi nc li phn ng:
CuAlCl4 + H2O 2HCl + CuCl + CuAlCl4.CuOCl
V vy, trc khi hp th kh phi c sy kh.
u im:
+ Hp th ha hc vn tc hp th nhanh.
Nhc im:
+ Qu trnh hp th ha hc phc tp, sinh ra cc ha cht thcp c th l cc cht nhim th cp.
+ Kh phi c sy kh trc khi cho vo x l.
+ hp th ho hc Kh nh hp th.
III.2.3 Hp th bng Nit lng.
- Trong cng nghip nit c sn xut bng cch chng ct phn
on khng kh lng. Trong kh quynnit chim 78% theo th tch (hay 75.5%
theo trng lng ) ca khng kh.u im:
+ C hiu sut cao c bit vi cc kh c kh nng ho tan tt.
+ C th x l kh c nhit thp lu lng ln.
+ Dung mi hp th d kim c th hon nguyn.
+ Mt s sn phm ca qu trnh hp th c th c s dng.
+ C th kt hp x l kh vi vic tch bi v lm lnh.
Nhc im:
+ Chi ph hon nguyn dung mi hp th cao.
+ Thit b cng knh chim nhiu din tch.
+ Tn nng lng.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 8
III.3 Hp ph bng than hot tnh.
- Dng kh thi c dn vo y thp, i qua lp vt liu hp ph bng
than hot tnh, cht nhim CO c gi li trong cc khe rng ca than v
trn b mt than. Cn khng kh sch thot ra ngoi nh thp.
- Khi than bo ho, ngi ta nh hp ph thu hi cht nhim v
than c th hp ph tr li.
u im:
+C th x l kh nhim c nng nh v lu lng ln.
+ Hiu xut x l cao >80 %.
+ Cht hp ph r d kim.
+ Vn hnh n gin t tn nng lng.
+ Lm vic n nh.
Nhc im:+ Khng thch hp x l kh nhim c nng ln.
+ Thit b cng knh chim nhiu khng gian, thit b hp ph v
thit b hon nguyn ni song song.
+ Cn c thit b lc bi trc khi vo h thng hp ph.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 9
IV. La chn phng php x l, s dy truyn cng ngh ca h
thng, thuyt minh cng ngh.
IV.1 La chn phng php x l.
- Da vo u nhc im ca cc phng php x l ta la chn phng
php hp th, vi dung mi hp th l Nit lng.
IV.2 S dy truyn cng ngh ca h thng.
IV.3 Thuyt minh cng ngh.
- h thng hp th CO lm vic n nh v t nng sut cao th kh thi
chaCO trc khi vo thp hp th (2) s c lm lnh bi hai thit b trao
i nhit kh - kh (1). Hai thit b ny s tn dng ngun lnh ca kh sau khi
i ra khi thp hp th (2) ti lnh cho kh thi cha COi vo h thng.
- Kh thi qua hai thit b trao i nhit (1) kh thi c dn vo thp hp th
(2) vi p sut l 1 at.- Trong thp hp (2). Nit lng chy t trn xung phn b u trn mt m,
CO i t di ln phn tn trong pha lng. CO s c hp th bi Nit
lng qua cc bc thay i nng phn kh tr ra khi thp s c dn n
hai thit b truyn nhit (1) ti lnh.
- Nit lngban u c bm (5) bm nit lng t bn cha (4) bm ln bn
cao v (6) cung cp nit lng cho thp (2), nit lng sau khi hp th CO
chy xung y thp v i ra ngoi n thit b nh hp th (3) tch CO,dung mi nit sau khi nh hp th s c hi lu tr li bn cha (4)
cung cp dung mi cho thp hp th (2).
- Bn cha (4) s cha nit lng sau khi nh hp th,nit lng trn t bn cao
vv nit lng cung cp vo h thng.
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n mn hc GV hng dn: Mc Duy HngPhn II. TNH TON THIT B.
I. Tnh ton cc thng s vo ra ca h thng.
Nng sut vo h thng: 8500m3/h
Chn iu kin lm vic ca thp hp th;
Hn hp kh x l gm CO, N2, v khng kh.
P = 1 at.
t0C = -1950C (780K).
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 11
Tnh Gy;
Gy= y.V
Ta c y = 1 . v1 + 1 . v2 + ;
Trong v1 , v2 - nng phn th tch ca cc cu t trong hn hp.
1 , 2 - khi lng ring ca cc cu t, kg/m3.
- Khi lng ring 00C (2730K),1at ca cc cu t l:
o, N2 = 1,2507 kg/m3.
o,CO = 1,2501 kg/m3.
o,kk = 1,2928 kg/m3.
0,y = (1,2507.0,04+1,2501.0,06+1,2928.0,9) = 1,2886 kg/m3.
- Khi lng ring 300C (3030K), 1at ca cc cu t l:
PP
T
T
PM
T
P
00
0
0 .
.273.
4,22.
..
kg/m3. [2]
trong :M - Khi lng mol ca kh, kg/kmol;
T - Nhit tuyt i ca kh, 0K;
4,220M
- Khilng ring ca kh k tiu chun (0oC v 760mmHg), kg/m3;
P, Po p sut ca kh iu kin lm vic v iu kin tiu chuno bng
cng mt n v;
- Khi lng phn t ca cc cu t; kg/kmolMN2 = 28 kg/kmol ;
MCO = 28 kg/kmol ;
Mkk = 29 kg/kmol ;
1262,11.303
1.273.
4,22
282
N
kg/m3
1262,11.303
1.273.
4,22
28
COkg/m3
1665,11.303
1.273.
4,22
29
kkkg/m3
y = 1,1262.0,04+1,1262.0,06+1,1665.0,9=1,1625 kg/m3;
Gy = 1,1625.8500 = 9881,2500 kg/h.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 12
Tnh Yd ;
khi lng CO trong th tch kh ban u l:
GCO=CO.VCO= CO.0,06.Vy= 1,1262.0,06.8500=574,3620 kg/h
Gtr,d =Gy GCO = 9881,2500-574,3620=9306,8880kg/h
0617,08880,9306
3620,574
, GG
Y dtrCO
d kgCO/kgtr.
Tnh Gtr;
- lng kh tr c tnh theo cng thc l;
0076,93070617,01
12500,98811
1
1.
yG
YGG dY
d
Ytrkg/h.
Tnh Yc;
- Theo tcvn 5939 1995 ct B
500,
,
V
GC
thai
cCO
tcCOmg/m3=500.E-6 kg/m3
- Khi lng CO trong kh thi l :
CO
CO
YYtcCOthaitcCOCO
GVVCVCG 04,0.9,0.. ,,
CO
tcCO
YY
tcCOcCO C
VV
CG ,,, 1
.04,0.9,0
.
9968,3
1262,1
6.5001
8500.04,08500.9,0.6.500
,
EEG cCO kg/h
0004,08880,9306
9968,3
,
GG
Ydtr
CO
CkgCO/kgtr.
Tnh Xd- Ta c ; Xd = 0;
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 13
Phng trnh ng cn bng ca qu trnh hp th l:
xP
y
*
- Trong : l h s Henry c th nguyn l p sut.
x l nng phn mol ca kh trong lng.
P l p sut chung ca hn hp.
TT
C0
298
11exp.
Trong 298 l h s Henry 2980K.
i vi CO th C = 13000K.
4273,199298
1
78
11300exp.6.44
E mmHg.
2624,0 at.
xxy 2624,01
2624,0*
X
XY
7376,01
.2624,0
Y
YX
7376,02624,0
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 14
II.Tnh lng dung mi (pha lng).
Tnh Gx:
Gx = 1,2.Gx,min
XX
YYGG
ddcb
cd
trX
,
min,; [3]
Da vo phng trnh cn bng ta c
2845,00617,0.7376,02624,0
0617,0,
X dcb kgCO/kg,tr
3412,20052845,0
0004,00617,0.0076,9307
min,
GX kgN2
Ta c Gx = 1,2 Gx,min => Gx = 1,2.2005,3412 = 2406,4094 kgN2.
Tnh Xc
Da vo phng trnh cn bng vt liu ta c :
Gtr(Yd - Yc) = Gx(Xc - Xd)
2517,00004,00617,0.2406,4094
9881,2500. YY
GG
X CdX
Y
CkgCO/kgtr
Ta c ng nng lm vic ca qu trnh l ;
XGG
YGG
d
tr
X
c
tr
X XY ..
0004,02586,0 XY .
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 15
III. Tnh ton thit b (thp) hp th.
Chn m rasig bng s.
-Kch thc m (25*25*3).
-B mt ring = 195 m2/m3
-Th tch t do cam Vtd = 0,75 m3/m3
-s m trong 1m3 l 46.E3
- Khi lng ring xp = 600 kg/m3
Tnh ng knh thp.
ng knh thit b c tnh theo cng thc sau:
785,0
VYD m. [3]
Trong : VY ; lu lng pha kh, m3/s;
; vn tc lm vic trong thp kh, m/s.
=(0,8-0,9) dp
- Khi lng ring -1950C (780K), 1 at ca cc cu t l:
3750,41.78
1.273.
4,22
282
N
kg/m3
3750,41.78
1.273.
4,22
28
COkg/m3
5313,41.78
1.273.
4,22
29
kkkg/m3
y = 4,3750.0,04+4,3750.0,06+4,5313.0,9=4,5157 kg/m3;
8082
Nkg/m3
6078,05157,4.3600
2500,9881
.3600
Y
YGV m3/s.
- Tnh dp9,08,0 ?
n
X
FgY
X
Y
td
dp
16,0
3
2
...
.[3]
vi g=9,81m/s2
l b mt ring ca m,m2/m3.
Ftd l tit din t do ca m,m2/m2. c tr s l th tch t do ca m.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 16
nl nht ca nc 200C c tr s 3.79,1 E
n N.s/m2
x nht ca nit lng 780K; vi C=104.
2
3
0 273.
273.
T
CT
C
t N.s/m2
6.2198,5273
78.10478
104273.7.1652
3
EE
t N.s/m2
eX
Y4
2,1
8/14/1
.
X
Y
Y
X
GG
X [3]
3673,0808
5157,4.
2500,9881
4094,24068/14/1
X
2761,0.2,13673,0.4
eY
16,0
3
2
)3.79,1
6.2198,5.(
808
5157,4.
75,0.81,9
195.2761,0
E
Edp
6686,22dp
6336,1dp m/s
3069,16336,1.8,0 m/s
7697,03069,1.785,0
0,6078D m.
- chnng knh theo tiu chun l 800 mm.
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n mn hc GV hng dn: Mc Duy HngTnh chiu cao thp.
Chiu cao lp m H=h.mTrong :H l chiu cao lp m (m).
h l chiu cao tng ng ca mt n v thay i nng (m).m l s bc thay i nng .
- S bc thay i nng ;
da vo th ca ng cn bng v ng lm vic ta c s bc thay i nng
.
23m
- Chiu cao ca mt bc thay i nng ;Theo Kafarov neski th:
4,0
2,11
.200
Ftdh (m). [3]
Trong : ; vn tc lm vic trong thp, m/s.; l b mt ring ca m m2/m3.
2273,01.195
75,02003069,1
4,0
2,1
h m.
=> 2279,52273.23,0 H m.- chn chiu cao lp m l 5 m.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 18
IV. Tnh tr lc thp.- Tr lc c tnh theo cng thc.
2
...
2
0
dtdY
Hp
N/m2. [3]
Trong :-h s ma st;d
td- ng knh tng ng ,m;
H - chiu cao lp m,m;0 - vn tc kh trong lp m,m;
Vtd
0
vi l vn tc lm vic ca kh trong thp,m/sthay 0 qua ta c :
Vtd
YH
p3
2...
.8
,N/m2 [3]
h s ma st c tnh da vo chun s Re
YRe
140 vi
.
..4ReY
Y
Trong ;- l b mt ring ca m,m2/m3- l nht ca dung mi, Ns/m2
0403,231926.2198,5.195
5157,4.3069,1.4ReY
E
0060,00403,23192
140
3688,1375,0
5157,4.195.3069,1.5
.8
0060,03
2
p N/m2
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8/3/2019 design CO treatment by nitro liquid
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 19
V. Tnh ton cc thit b ph tr.
ng dn kh.
Da vo lu lng ca dng kh l;
6078,05157,4.3600
2500,9881
.3600
Y
Y
Y
GV m
3/s =607,833 l/s
-Ta chn ng knh ng dk = 250 mm . [4]
- dy chn s = 5mm.
ng dn lng.
Da vo lu lng ca dung mi l;
0008,0808.3600
4094,2406
2
N
X
X
GV m
3/s =0,8273 l/s.
- Ta chn ng knh ng dn lng dl = 40 mm. [4]
- dy chn s = 5mm.
Tnh li m. [5]
-ng knh li d = 785 mm.
-Chiu dy ca li l 30 mm.
-Chiu dy ca thanh l 5 mm.
-Chiu rng ca bc b = 22 mm.
Tnh a phn phi lng. [5]
-Chn a phn phi loi 1; Dd = 500 mm.chiu cao a phn phi lng l hd=100 mm.
-S ng dn cht lng l 37 ng.
-ng dn cht lng dxs 44,5x2,5 mm.
-Bc t = 70.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 20
VI. Tnh b dy, chn vt liu ch to thn thp, y, np thit b v bch ni
cc phn ca thit b.
- Chn vt liu ch to thn thp l thp CT3.
- B dy thit b c tnh theo cng thc
Cpp
SDt
..2
.
,m. [5]
trong :Dtl ng knh trong ca thp, m.
l h s bn ca thnh hnh tr theo phng dc.
C l s b xung do n mn(bo mn v dung sai v chiu dy),m.
p l p sut trong thit b,N/m2.
l ng sut cho php khi nn.
6.1601.5,1E6.240
EnC
tC
,N/m
2
[5]
t
C=240.E6 N/m2 l gii hn bn.
nC=1,5 l h s an ton theo gii hn bn.
95,05
25.05
L
dL
Trong L- l chiu di ca thn hnh tr,m.
d l tng s ln nht ca ng knh cc l trn mt ng sinh,m.
C = C1 + C2 + C3 ,m.
Trong C1 l s b xung do n mn thit bn va C1 = 1mm.
C2 l s b xung do hao mn (thit b ho cht nn b qua).
C3 l s b xung do dung sai ca chiu dy,C3=0,8mm.
C=(1+0,8).E-3=1,8.E-3 m.
=>p sut thu tnh phny thit b do dung mi gy ra:
4000,396325.808.81,9.. HgXXP
=> p sut kh trong thp l: Pk=1.98100=98100 N/m2
=> p sut trong thp l: P=Pl+Pk=39632,4000+98100=137732,4000 N/m2
0022,03.8,14000,13773295,0.6.160.2
4000,137732.8,0
E
ES m.
chn chiu dy S=0,003m=3mm.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 21
- Kim tra ng sut ca thnh theo p sut th.
p sut th tnh ton P0 xc nh theo bng XIII.5
Pth=1,5P=1,5.137732,4000=206598,6000 N/m2
Xc nhng sut ca thn thit b theo p sut th tnh ton dng cng thc
(XIII.26)
6.5995,7295,0.3.8,13.2
6,206598.3.8,138,0
2
.)(0 E
E
E
CS
CS
h
t PD
N/m2 kim tra iu kin tho mn ;=> chiu dy thn thp l 3mm.
Tnh y v np thp.
- chny v np thp dng elip c g.
ht=200 mm.
h=50 mm.- tnh chiu dy y v np theo cng thc:
C
Pk
PS
hDD
b
t
hk
t
.2
....8,3
.
, m. [5]
hb l chiu cao phn li ca elp.
H s 9688,08,0
025,011
D
t
dk
306060,97595,0.9688,0.4000,1377326.146.. Ek
P h => nn c th b qua P mu.
CECE
S 3.4,02,0.2
8,0.
95,0.9688,0.6.146.8,3
8,0.4000,137732, m.
-
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 22
Tnh bch ni cc phn thit b.
chn bch lin loi 1 vi p sut kh Py=0,3.E6 N/m2 [5]
PY.E-6
N/m
2
Dt
Kch thc ni
hD Db DI D0 Bu lng
db zMm ci mm
0,3 800 930 880 850 811 M20 24 22
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 23
VII. Tnh chn v tay treo thp.
Trng lng ton thp: [5]
- Trng lngm:
294305.8,0.600.81,9.. VgM demdemdem N.
- Trng lng dung mi:380475.8,0.808.81,9..
2 VM dmoiNdmoi g N.
- Trng lng thn thp:
0586,0.4
220,6.14,3
4
.000,2003,2
2222
DD tn
HV m3
6981,451281,9.3.85,7.0586,0..3
EgCTthanthan VM N.
- Trng lngy v np:
Theo bng XIII.11 th miy c khi lng l 283 kg:5240,5922,30.81,9.2
2M day N.
- Trng lng 2a phn phi lng 2 lim:
8,78420.81,9.422
M Ld N.
- Trng lng ton thp
MM day LdMthanMdmoiMdemM
2 22
7336878559345133804729430 M N.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 24
Chn chn .
Vi trng lng ca ton thp 4.5,7 EM ,N chn chn c 3 chn.
Ti
trng/1chn
G.10-4, N
B mt
F.104,
m2
ti trng
cho php
trn b
mt
q.10-6,
N/m2
L B B1 B2 H H S L d
2,5 444 0,56 250 180 215 290 350 185 16 90 27
Chn 3 tai treo.
Vi trng lng ca ton thp 4.5,7 EM ,N chn tai treo c cc thng s sau.
Ti trng
cho
php/1tai
treo
G.10-4,N
b mt
F.104,m2
Ti trng
cho php
ln b
mt
q.10-6
,N/m2
L B B1 H S L a d khi
lng 1
tai treo,
kg
2,5 173 1,45 150 120 130 215 8 60 20 30 3,48
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 25
V.III Tnh khi lng ton b thp.
9399,743881.9
72976
g
MGthap kg.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 26
IX. Chn bm kh v lng.
Da vo lu lng dung mi cn cp.
Q = 0,6684 kg/s = 0,8273 l/s. = 0,0008 m3/s.
Thp cao 7m b vo tn tht dcng tn tht cc b do ngng, ct
ni chn H = 10mH2O.
Cng sut bm :
.1000
... HQgN (kw).
chn hiu sut bm 7,0
95,07,0.1000
10.0008273,0.81,9.808N (kw) =1,3(HP).
Do chn h s an ton cng sut =1,2Cng sut bm yu cu 14,12,1.95,0. N
YC (kw) = 1,6(HP).
chn 2 bm, mt ci hotng mt ci d phng mi ci c:
Q=3m
3
/h.H=10mH2O.
N=1,6HP.
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 27
PHN III.TNH TON KINH T.
- Chi ph cho h thng x l :
st
t
Vt liu loi quy
cch
n
v
s
lng
Gi/1v
(ng)
Thnh tin
(ng)
1 Thp lm
thn
Thp tm
CT3-3mm
kg 460 12700 5,842,000
2 Thp y-
np
Thp tm
CT3-5mm
Kg 60,4 12700 767,080
3 Thp lm
bch
Thp
CT3-10mm
kg 150 12700 1,905,000
4 Thp lm
li
Thp
CT3-30mm
Kg 40 13500 540,000
5 Thp a pp
lng
Thp
CT3-5mm
Kg 40 12700 508,000
6 Bu long Thp Ci 72 2000 144,000
7 Tai treo
+ chn
Thp
CT3-16mm
Kg 80 13200 1,056,000
8 Bm Q=3m3/h.
H=10mH2O.
N=1,6HP
ci 2 2000000 4,000,000
9 m s
(25*25*5)
ci 288880 3500 1,011,080,000
Tng 1,025,842,080
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 28
PHN IV.KT LUN.
- Hin nay tri tang ng trc rt nhiu mie do nh sng thn, ng
t, l lt hn hn,hin tng sng khi, hiung nh knh, thng tng
zn Nhng mie do cng bt ngun t chnh loi ngi bi s gia
tng mt lng kh thing k t cc hotng cng nghip.
khc phc v gim thiu nhng hu qu cc quc gia cna gia
cc chnh sch v tiu chun thi hp l trnh nhng ri do do kh thi gy ra
png tiu chun thi kh thi ra mi trng th da trn nhng nguyn
tc v tnh cht kh thi ngi ta nghin cu ra cc bin php x l va mang
li li ch kinh t va hi ho vi mi trng.trong nhng nm gny cng
ngh x l kh thi c rt nhiu cng ngh mi v a vo ng dng phi
kn chnh l cng ngh x l kh thi hp th bng nit lng vi hiu sut hp
th tt cc kh thic hi .Thng qua mt ti v hp th monocacbon oxit bng dung mi nit lng
cng phn no cho chng ta bit v x l kh bng dung mi nit lng c
nhngu im nh dung mi sn c thit b nh gn chi ph u t khng cao
hiu sut x l cao.
Tuy nhin bt c phng php no cng khng th thiu nhng nhcim
nh thit b lm viciu kin khc nghit(-1950C c th hu hoi lm cht t
bo ngay lp tc) bi vy trong khi ch to thit b cn ch cc thng s anton trnh nguy him .
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8/3/2019 design CO treatment by nitro liquid
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n mn hc GV hng dn: Mc Duy Hng
Nhm 16 Lp k43ktm01 I HC K THUT CNG NGHIP 29
TI LIU THAM KHO:
[1] nhim khng kh v x l kh thi tp 1-GS Trn Ngc chn - nh xut bn
khoa hc k thut.
[2] s tay qu trnh v thit b cng ngh ho cht tp 1.
[3] Cc qu trnh thit b trong cng ngh ho cht v thc phm tp 4.
[4] Thu lci cng- GS.TS Nguyn Ti-PTS Phm Ngc Cu.
[5] s tay qu trnh v thit b cng ngh ho cht tp 2.
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n mn hc GV hng dn: Mc Duy HngMC LC
trang
Phn I: TNG QUAN.
I.Mu. 1
II. Tnh cht ho l v tc hi ca kh cn x l. 2
III. Cc phng php x l hin nay c p dng. 6
IV. La chn phng php x l . S cng ngh ca h thng. Thuyt
minh cng ngh. 9
IV.1 La chn phng php x l. 9
IV.2 S dy truyn cng ngh ca h thng. 9
IV.3 Thuyt minh cng ngh. 9
Phn II. TNH TON THIT B. 10I. Tnh ton cc thng su vo - ra ca h thng. 10
II. Tnh lng dung mi (pha lng). 14
III. Tnh ton thit b thp hp th. 15
IV. Tnh tr lc thp. 18
V. Tnh ton cc thit b ph tr. 19
VI. Tnh b dy, chn vt liu ch to thn thp, y, np thit b v bch ni
cc phn ca thit b. 20VII. Tnh chn v tai treo ca thp. 23
VIII. Tnh khi lng ton thp. 25
IX. Chn bm kh v lng. 26
Phn III.TNH TON KINH T. 27
Phn IV. KT LUN. 28
TI LIU THAM KHO. 29
MC LC 30
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