Thiết kế hệ thống sản xuất chưng cất sản xuất cồn 90o từ hỗn hợp rượu etylic nước bằng tháp đệm với năng suất sản phẩm 400kgh, nhập liệu chứa 30% thể tích cồn, sản phẩm đáy chứa 90% thể tích nước

ĐỒ ÁN HỌC PHẦN
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 !"#
$%"
&'%()
*()+
,! %/
!0.12
345567895:5:;4;<6;=8>?@ABBCD5:5;E5:5:?5;8<F<5::<GBD>H5FI55J5895:
5:;34G8K65LH8B65<3C3M5:N?8OB;I:3H35<38;P5:QRNS7TO5UPVB8W8;<68;VB8X5:
5;L8W85:P7M5>34PB35;Y;3IB8;D5:?5;5?7FZT[N?F65:8<T\8;]B>H5F^G;_;`G
NH3aP7BCR5;TO5UPVB;675;P8bPTcde5:8K68D55:Lf3Q
2gW5;=8G;b5PWCR5;N?;3IBh<6=8>?@95;=8Bi5:;`GN?N98_5:8b5
B;3IBFj3NH3@ABYkTL;<6;=8BLl5:>635<:3]GB6mLH8FbP>?@aPn5NH3N348Bo5;
BDW5B;3IBYI@ABB;3IBmh8<7MP8bP8eB;^Y;95:5;E5::3O3aPIBNV5FJNJ895:5:;4
@?8p5NJYIB8VPF3JPY345NS5;?5;N?:3WB;?5;8K6@ABB;3IBmh;<6;=8BqN348NS5
de5:Y3I5B;\88K65;3JP@95;=8N?D:3O3aP7IB5;E5:NV5FJYkB;PSBBCD5:B;r8BIQ
;r8BCs5:;3455678;DB;V7Ct5:5;P8bPTcde5:;<68;VBB35;Y;3IBCVB>H58W8
G;Ll5:G;WGFL`8Tcde5:F^5u5:86DFAB35;Y;3IB5;LBCo8;>78;L5:8VB89Fv8;VG
B;PQQQ_7B;nDFv8Bo5;7MP8bP8K6TO5G;w@@?B68<Tr>r68;=5G;Ll5:G;WGB;o8;
;`GQ.ABBCD5:5;E5:G;Ll5:G;WG8<B;^FWG\5:@ABG;b57MP8bPF<>?8;L5:8VB
xG;Ll5:G;WGd_5:F^BW8;8W8;y5;`G8;VB>z5:8X5:5;L8W8;y5;`GY;o>z5:B;?5;
8W88VPBcC3M5:m34Bdr6N?D5;34BFAm67;l3Y;W85;6P8K68W88VPBcBCD5:;y5;`GQ
2j3NH3;4{B65D>|LH8>?8VPBcB65>}5;D?5BD?5N?D5;6PB6G;O3d_5:G;Ll5:
G;WG8;L5:8VBF^5u5:86DFAB35;Y;3IB8K6{B65D>QNhiệm vụ đồ án;3IBYI;4B;j5:
TO5UPVB8;L5:8VBTO5UPVB8g5~•
D
Bq;y5;`GCL`P{B7>38|LH8mt5:B;WGF4@NH3
5€5:TPVBTO5G;w@$••%:•;5;SG>34P8;\6•‚B;^Bo8;8g5TO5G;w@FW78;\6~•‚
B;^Bo8;5LH8Q

{@U358;u5B;?5;8O@l58W8B;b789Y;D6.W7|;3IBhFZ;LH5:d}5n@>?@FgW5
5?7QP75;3M5BCD5:aPWBCR5;>?@FgW58X5:Y;95:B;^BCW5;Y;z35;E5:T63T<B5M5CVB
@D5:8W8B;b789F<5::<GƒY3I5N?8;„d}5B;M@F^FgW55?7FL`8;D?5B;345;l5Q
.+!+
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•!ƒB;P7IBNJ8;L5:8VB
Khái niệm8;L5:>?G;Ll5:G;WGd_5:F^BW8;8W8;y5;`G8;VB>z5:8X5:5;L8W8;y5
;`GY;o>z5:B;?5;8W88VPBcC3M5:m34Bdr6N?D5;34BFAm67;l3Y;W85;6P8K68W88VP
BcBCD5:;y5;`Gx5:;…6>?Y;3†8_5:@AB5;34BFAWGTPVB;l38K68W88VPBcY;W8
5;6P‡Q;67NRFL6N?DBCD5:;y5;`G@ABG;6@H3F^BsD5M5TrB3IGU]8:3E6;63G;6
5;LBCD5:aPWBCR5;;VGB;P;Dv85;OY;oBCD5:aPWBCR5;8;L5:8VBG;6@H3FL`8BsD5M5
mt5:Trmj8;l3;Dv85:L5:BeQCD5:BCLf5:;`GFl5:3O55;VB8;L5:8VBN?89Fv8
Y;W8:R5;6PBP75;3M5:3E6;63aPWBCR5;5?78<@ABC65;:3H38lmO5>?BCD5:aPWBCR5;
8;L5:8VBdP5:@93N?8;VBB65FJPm67;l3x5:;…6>?8W88VPBcFJP;345d345BCD5:8O
;63G;65;L5:NH3Bˆ>4Y;W85;6P‡8p5BCD5:aPWBCR5;89Fv8B;R8;„8<dP5:@93m67
;l38p58;VBB65Y;95:m67;l3Q‰ŠBC65:*‹
%;38;L5:8VBB6B;PFL`85;3JPTO5G;w@N?B;Lf5:B;Rm6D5;3MP8VPBcT[B;PFL`8
mV75;3MPTO5G;w@Q1Fu7B68;„UŒBFI5BCLf5:;`G;y5;`G:g@;638VPBcY;3F<aPW
BCR5;8;L5:8VBT[8;D
 •O5G;w@F„5;8;K7IP:g@8VPBc8<FAm67;l3>H5N?@ABG;b5CVBoB8VPBc8<
FAm67;l3mŒQ
 •O@G;w@FW78;K7IP:g@8VPBc8<FAm67;l3mŒN?@ABG;b5CVBoB8VPBc8<
FAm67;l3>H5Q
Các phương pháp chưng cất được phân loại theo:
GTPVB>?@N3488;L5:8VB†WGTPVBB;VGWGTPVBB;Lf5:N?WGTPVB86DQ:P7M5BŽ8
>?@N3488K6G;Ll5:G;WG5?7>?dr6N?D5;34BFAT938K68W88VPBc5IP5;34BFAT93
8K68W88VPBcaPW86DB;RB6:3O@WGTPVB>?@N348F^BqF<8<B;^:3?@5;34BFAT938K6
8W88VPBcBCD5:;4Q
:P7M5>ƒ>?@N3488;L5::3W5FDs5x8;L5:Fl5:3O5‡N?8;L5:>3M5Be8
 ;L5:8VB:3W5FDs5x:3W5FDs5‡G;Ll5:G;WG5?7FL`8d_5:F^BW8;8W8;y5

;`G:g@8W88VPBc8<FAm67;l3CVBY;W85;6PQ;Lf5:d_5:F^BW8;TlmAN?
>?@Ts8;8W88VPBcY;z3BsG8;VB
 ;L5:8VB>3M5Be8>?aPWBCR5;FL`8B;r8;345>3M5Be85:;h8;dp5:N?5;3JP
FDs5
;L5:mt5:;l35LH8BCr8B3IGd_5:F^BW8;;j5;`G:g@8W88;VBY;<m67;l3N?BsG
8;VBY;95:m67;l3B;Lf5:FL`8\5:de5:BCD5:BCLf5:;`G8;VBFL`8BW8;Y;95:B65
BCD5:5LH8Q
<@>s3NH3;4{B65D>|LH8B68;=5G;Ll5:G;WG8;L5:8VB>3M5Be8
Thiết bị chưng cất:
CD5:TO5UPVBB;Lf5:Tcde5:CVB5;3JP>Ds3B;WG5;L5:8;]5:FJP8<@AB7MP8bP8l
mO5>?d345Bo8;mJ@vBB3IGU]8G;6G;O3>H5F3JP5?7G;eB;PA8N?DFAG;u5BW58K6>LP
8;VB5?7N?D>LP8;VBY36Q
;WG8;L5:8VBCVBG;D5:G;]NJYo8;8•N?\5:de5:Q%o8;B;LH88K6B;WGFLf5:Yo5;
N?8;3JP86DB_7B;PA8TPVB>L`5:G;6>z5:G;6Y;o8K6B;WGN?FAB35;Y;3IB8K6TO5
G;w@QY;WDTWB>Ds3B;WGB;Lf5:d_5:>?B;WGF4@N?B;WG@u@Q
;WGF4@B;WG;R5;BCe:g@5;3JPFDs55j3NH35;6Pmt5:@vBmo8;;67;?5QSB8;M@
FL`88;DN?DB;WGB;nD@ABBCD5:;63G;Ll5:G;WGUIG5:}P5;3M5;67B;nDB;\Br
;WG@u@B;u5B;WG;R5;BCeB;•5:F\5:G;o6BCD5:8<:Ž58W8@u@8<8VPBsDY;W8
5;6PF^8;36B;u5B;WGB;?5;5;E5:FDs5mt5:5;6PBCM5@u@G;6>z5:N?G;6;l3FL`8
B3IGU]8NH35;6PQ_7B;nD8VPBsD8K6F…6B68<
;WG@u@8;<GBCM5@u@mjBCo8<8;<Gds5:BCp5UPG6G8;ET‘
;WG@u@UP7M5>yBCM5@u@mjBCo8W8>y8<FLf5:Yo5;|@@
"P5;L`8F3^@8K6B;WGF4@BP78VPBsDFl5:3O5BC†>r8B;VG5;L5:;34PUPVBB;VGFA
i5Fh5;YŒ@N?B;3IBmhY;W5v5:
•3H3B;34PTlmANJ5:P7M5>34P
Nguyên liệu là hỗn hợp rượu Etylic-Nước
1 . Etylic :x8p5FL`8:=3>?{B65D>;678g5‡Q
95:B;\88VPBsD

|


|Y;j3>L`5:G;u5Bc$*FNQ!?8;VBz5:8<@_3
Fv8BCL5:Y;95:FA8B655;3JPBCD5:5LH8Q.ABTjBo5;8;VBNSB>ƒ8K6nB65D>
’;34BFAT93†‹*•x@@:‡‹“Q
D
Q
’Y;j3>L`5:C3M5:d
$
•
”“•x%:•@

‡Q
o5;8;VB;<6;=8
• VB8O8W8G;O5\5:;<6;=8UO7C68K65;<@;7dCDU7>x|‡8K6{B65D>B;^;345
>?Bo5;8;VB;<6;=88K65<
;O5\5:8K6;7dCDBCD5:5;<@;7dCDU7>


|

|

|

|
|
’
’
t5:TjG;u5>78K6nB65D>
“

•

−
−−
=
OHCHCH
K
8;D5M5{B65D>>?8;VBBCP5:Bo5;Q
o5;683d8K6{B65D>B;^;345aP6G;O5\5:NH3Y3@>Ds3Y3J@6BC3;7dCP6x6‡6BC3
6@3dx6

‡


|

|’6

|

|6’

6BC3nB7>6B
•D
$
•

−
−−
=<

OHOHCHCH
KK
Bo5;683d8K6CL`P5;z;l5Bo5;683d8K65LH85M5Y;3
@Pj36BC3nB7>6BB65BCD5:5LH8T[mhB;K7G;u5B;?5;CL`PBC†>s3
!6–5;
’
->
BD
•$
—&•D
•$
—&•D
P
••|••D
W8de5:NH3683dBsDnTBnCCL`PnB65D>8<Bo5;m6˜lBLl5:FLl5:NH35LH8Q%;3CL`P
BW8de5:NH3683dN98l

•
$


N?683d;EP8lBsD5M5C6nTBnCQ


|

|’|•

|


|

|•

|’




|

|’||



||


&
’


™;O5\5:BCM55;<@;7dCDU7>
’W8de5:NH3š

|

|’š

|


|š’


’W8de5:NH3C38>D;DBG;D


|

|’>



|

|>’>’>
’W8de5:NH3



|

|’




&
|


’


’;O5\5:BsD{TBnCN?BW8;>Ds35LH8


|

|x

|

‡

’




|

|

”

’


™;O5\5:;7dCDN?DU7;<6



|

|

|’


2. Nước (CTCT: H
2
O)
CD5:F3JPY345mR5;B;Lf5:5LH8>?8;VB>z5:Y;95:@?PY;95:@_3Y;95:NhQ
%;3;<6CŽ55<8<B;^Bg5Bs3†&ds5:B35;B;^Y;W85;6P
%;j3>L`5:G;u5Bc“:•@D>
%;j3>L`5:C3M5:d
$
•
:•@>
;34BFA5<5:8;O7•
•

;34BFAT93••
•

LH8>?;`G8;VB8;3I@G;b5>H5BCM5CW32VBx•$d345Bo8;BCW3FVB>?5LH8‡N?
5<CVB8b5B;3IB8;DTrTj5:Q
LH8>?dP5:@93G;u58r8@s5;8<Y;O5€5:;p6B655;3JP8;VBN?D>?dP5:@93CVB
aP65BC=5:BCD5:YkB;PSB;<6;=8Q
Ứng dụng của Etanol:
 !?5:P7M5>34PF^TO5UPVB86DTPBi5:;`GQ

 L`P{B7>38d_5:F^F3JP8;I@ABTj;`G8;VB;EP8l5;L683d6UnB38d3nB7>nBn
N?nB7>6UnB6B‘
 •D5<8<Y;O5€5:;p6B65BjB@ABTj8;VB;EP8l5M5CL`PnB7>38d_5:F^G;6
Nn853dL`8G;w@N?5LH8;D6‘
 %;38;W7Bz65;3JP5;34B5M5CL`PnB7>388p5FL`8d_5:>?@5;3M5>34PQ

••lFg;4B;j5:B;3IBmh8;L5:8VB
•;P7IB@35;aP7BCR5;895:5:;4
y5;`G8g5•
D
†‹
D
‘‘‘Q
 !"#
•Cân bằng vật chất
•W8B;95:Tjm65FbP
€5:TPVBTO5G;w@F„5;
hkgD •$••
=
;SG>34P8g5•
D
•O5G;w@F„5;8g5~•
D
•O5G;w@FW7~•‚B;^Bo8;5LH8
%;j3>L`5:G;u5Bc8K6{B65D>N?5LH8.
{
”$*.

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;=55;34BFA5;SG>34PB

›
”‹
D

;=55;34BFATO5G;w@F„5;T6PY;3>?@5:PA3B
•
”&
D

;=55;34BFATO5G;w@F„5;T6PY;3BC6DFi35;34BB
œ
”&
D

Cs5:B;W35;SG>34P>z5:T93Q
Đổi độ cồn ra phần molBC6Y;j3>L`5:C3M5:8K68g5xO5:QBC65:~•‰ŠNO5LH8
xO5:Q$~BC65:••‰Š†F3JPY345WGTPVBY;oaP7^5”6B
-•
N
NE
E
EE
E
EE
M
V
M
V
M
V

x
ρ
ρ
ρ
‡Q‚••x
Q‚
Q‚
−
+
=
;SG>34P8g5•
D
†‹
D
8<
ž
{
”~$‹“Y:•@

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
”~~*$Y:•@

‹*•
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$~~*‡Q•••x
$*
“~$‹Q•
$*

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Q‚
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=
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N
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E
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E
EE
F
M
V
M
V
M
V
x
ρ
ρ
ρ
•O5G;w@F„5;8g5~•
D

†&
D
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~~$‡Q~•••x
$*
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Q‚
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=
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NE
E
EE
E
EE
D
M
V
M
V
M
V
x
ρ
ρ
ρ
•O5G;w@FW78g5•
D
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‡Q‚••x
Q‚
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M
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%;j3>L`5:@D>BCP5:mR5;
‹&*““‡Qx$*Q =−+=
DDD
xxM
“&““‡Qx$*Q
=−+=
FFF
xxM
&*~“‡Qx$*Q =−+=
WWW
xxM
!LP>L`5:TO5G;w@F„5;Bo5;B;nDY@D>•;
hkmol
M
D
D
D
•~•
‹&*“
$••
===
;Ll5:BCR5;8u5mt5:NSB>34P8;DBD?5B;WG
WFWDF
+=⇔+=
~•
x‡

;Ll5:BCR5;8u5mt5:NSB>3MPN3IB8;D8VPBc5;Ÿ
•$•Q‹$••Q~•‹*•QQQQ WFxWxDxF
WDF
+=⇔+=
x‡
cx‡N?x‡B68<



=
=
hkmolW
hkmolF
•&*‹**$
•“~*‹‹$
;LNS7B68<mO5:Bi5:YIBB;?5;G;b5TO5G;w@5;LT6P
;b5@D> !LP>L`5:@D>
Y@D>•;
;b5Y;j3
>L`5:
!LP>Ll5:Y;j3
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===
πωπ
S7F^B3458;DN348Bo5;BDW5N?>r68;D58W8B;95:TjB68;=5FLf5:Yo5;BCD5:BCP5:
mR5;8K6B;WG8;L5:8VB>?•
B
”•&x@‡
II/ Chiều cao tháp
Gde5:895:B;\8šQ&•BC65:*“•‰Š
‡“•xQ ÷+=
tdLT
hNH
CD5:F<
!
>?TjF…6>ƒB;P7IBxTjmS8B;67Fi35g5:FA‡
;
Bd
8;3JP86DBLl5:FLl5:8K6mS8B;67Fi35g5:FAFL`8Bo5;mt5:895:
B;\8
x
y
x
f
x
y
e
y
x
d

x
y
c
d
b
d
a
y
tby
td
G
Gy
m
Gm
G
G
G
Vkh
−

































=

Q
>:
Q
Q
µ
µ
ρ

ρ
σ
µ
ωρ
x
y
x
x
y
y
x
x
y
dd
y
tby
td
G
Gy
m
Gm
G
G
G
Vh
−

































=
−


Q
>:
Q
Q$‹*
•“•
~•
$•

•
µ
µ
ρ
ρ
σ
µ
ωρ
H3@>?:3WBChB65:<85:;3M5:8K6FLf5:8u5mt5:NH3@vBG;•5:5:65:
S7B68<
n
x
y
m
∑
∆
∆
==
α
B65
Chiều cao đoạn cất:

68<@”•$*“
sm•
=
ω

•&“•“&*“~$ mkgmkg
yx
==
ρρ
hkgGhkgG
yx
••&*‹~•~&•‹
==

••Q&‹~• mNs
x
−
=
µ
¥
7
FL`8UW8Fh5;B;nD895:B;\8
N
Ntb
E
Etb
hh
hh
MyMyM
µµµ

‡x −
+=
H3
*~•

‹‹&•$“•

=
+
=
+
=
DF
tb
yy
y
*&‡Qx =−+=⇒
NtbEtbhh
MyMyM
2A5;HB8K6CL`PN?5LH8†““
D






==
==
−

−


••Q$“‹•$“‹•
••Q&“*&•&“*&•
mNscp
mNscp
N
E
µ
µ
;IN?DB6Bo5;FL`8

••Q&• mNs
yhh
−
==
µµ
m
h
td
*&*•
~&•‹
•&*‹~Q$*“•

•&*‹~Q$*“•
~&•‹
>:
&‹~•
&•

&“
“&*“~$
~&•‹
•&*‹~
‹&•~&
•Q&•
Q&“
Q$‹*
•“•~•$•

•

=
−



























=
−
−
mhH
td
“*&*•Q&Q& ===⇒
Chiều cao đoạn chưng:
68<@”“&*
sm •$~
=
ω

•~‹$••$•~&* mkgmkg
yx
==
ρρ
hkgGhkgG
yx
•‹“‹‹*“•“‹‹•$‹
==


••Q“• mNs
x
−
=
µ
¥
7
FL`8UW8Fh5;B;nD895:B;\8
N
Ntb
E
Etb
hh
hh
MyMyM
µµµ
‡x −
+=
H3
“&&•

““•$“•

=
+
=
+
=
WF

tb
yy
y
‹~$“‡Qx =−+=⇒
NtbEtbhh
MyMyM
2A5;HB8K6CL`PN?5LH8†““&
D






==
==
−
−


••Q••
••Q$&*$•$&*$•
mNscp
mNscp
N
E
µ
µ
;IN?DB6Bo5;FL`8


••Q~~• mNs
yhh
−
==
µµ
m
h
td
&*
“‹‹•$‹
‹“‹‹*“Q“&*

‹“‹‹*“Q“&*
“‹‹•$‹
>:
“•
~~•
~‹$•
$•~&*
“‹‹•$‹
‹“‹‹*“
‹&•~&
•Q~~•
$~Q~‹$•
Q$‹*
•“•~•$•

•

=

−


























=
−
−

mhH
td
*&*QQ ===⇒
Vậy ta có tổng chiều dài của tháp chưng cất:
mhNH
tdLT
•*‹~Q•*“‡“•xQ =++=÷+=
III/ Tính toán trở lực của tháp
-•šQ“BC65:“~•‰Š

•&•
&•
•$&•
•$“ mN
G
G
PP
y
x
x
y
y
x
ku

































+∆=∆
µ
µ
ρ

ρ
2Lf5:Yo5;BLl5:FLl5:
•&$•
~&
‹&•Q$
$
===
d
d
td
V
d
σ
;Pw5Tjn5D7
dy
ytdy
y
V
d
µ
ρω
=n
1/ Đối với đoạn cất
$•$*•
‹&•Q•Q&•
&“Q•&$•Q$$
n

>===
−

dy
ytdy
y
V
d
µ
ρω
5M5B68<;4Tj
•&‹
n
*
¦
•
==
y
λ
k
P∆
FL`8UW8Fh5;B;nD895:B;\8šQ~BC65:“~•‰Š
*~$&

&“Q$$
‹&•
~&Q“
Q
$
•&‹

Q
Q

Q
Q
$
¦


===∆
y
y
d
d
k
V
H
P
ρω
σ
λ
;678W8B;95:TjBCM5N?D895:B;\8x™‡

•&•&••$&•
•$*‹$‹
&•
$“•
“&*“~$
&“
•&*‹~
~&•‹
$“*~$& mNP
u

=


























+=∆
2/ Đối với đoạn chưng
$•$~‹

‹&•Q•Q~~•
~‹$•Q•&$•Q$&
n

>===
−
dy
ytdy
y
V
d
µ
ρω
5M5B68<;4Tj
‹‹$&*
n
*
¦
•
==
y
λ
k
P∆
FL`8UW8Fh5;B;nD895:B;\8šQ~BC65:“~•‰Š
&‹•$

~‹$“•Q$&
‹&•
~&Q&*

Q
$
‹‹$&*

Q
Q
Q
Q
$
¦


===∆
y
y
d
d
k
V
H
P
ρω
σ
λ
;678W8B;95:TjBCM5N?D895:B;\8x™‡

•&•&••$&•
•&&~“$
~~•
•

$•~&*
~‹$•
‹“‹‹*“
“‹‹•$‹
$“&‹•$ mNP
u
=



























+=∆
S7Bi5:BC†>r8BCM5BD?5B;WG

••“*&‹&&~“$$*‹$‹ mNP
u
=+=∆
PHẦN 5: TÍNH TOÁN CƠ KHÍ THIẾT BỊ CHÍNH
•Jd?7B;u5B;WG
°5:TPVB8;DG;ŒG8K6B;WGFL`8Bo5;B;nD895:B;\8šBC65:&*


• mN
n
b
t
k
k
η
σ
σ
=


• mN
n
c
t

c
k
η
σ
σ
=
RB;WG8;L5:8VB;DsBFA5:†WGTPVBB;Lf5:5M5B6B;3IBYIB;u5;R5;BCemt5:G;Ll5:
G;WG;?5:3WG@j3xG;Ll5:G;WG;gaP65:‡Q;u5B;WGFL`8:;ŒGNH35;6Pmt5:8W8@j3
:;ŒGmo8;Q
2^FO@mOD8;VB>L`5:8K6TO5G;w@N?Y;O5€5:€5@p58K6CL`PFj3NH3B;3IBmh
B68;=5NSB>34P8;IBsDB;u5B;WG>?B;ŒGY;95::„@Zš“•Q
Áp suất tính toán :
;WG>?@N348†WGTPVBY;oaP7^55M5B68;=5WGTPVBBo5;BDW5

BB
”
8>
’∑;
B>
’••*x•@@

‡
H3
8>
WGTPVBB;K7B…5;dD8;VB>z5:†FW7x•@@

‡Q
;=5WGTPVBBo5;BDW5T6D8;DB;WG;DsBFA5:†F3JPY3455:P7;3^@5;VB@?N}5
65BD?55M5


•&***$•*‹Q“~Q

$•~&*“&*“~$
Q

mNHggH
chungxcatx
xcl
=
+
=
+
==
ρρ
ρρ

@B
”
YY
”•*“•@

†6B@
•P7C6
BB
”**$&*’*&‹•“’•*“”‹“*‹x•@

‡±•‹$x•@@

‡Q
Nhiệt độ tính toán :

;=55;34BFABo5;BDW5B
BB
”B
œ
”~*
D
Q
C6B?3>34PB;6@Y;OD‰$Š\5:TPVBB3MP8;Pw5Fj3NH3B;ŒGš“•
‰σŠ
™
”$x•@@

‡Q
2j3NH3CL`P;4Tj;34P8;„5;η”
S7\5:TPVB8;DG;ŒG‰σŠ”ηQ‰σŠ
™
”$x•@@

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Chọn đáy và nắp có dạng là ellipise tiêu chuẩn, có gờ bằng thép X18H10T.
Chiều dày đáy-nắp thiết bị:

b
t
hk
t
h
D
Pk
PD
S
Q
Q
QŠQQ‰“Q
Q
¦
−
=
ϕσ
CT XIII.47 trang 385_[3]
ϕ

h
=0,9 : hệ số bền mối hàn
Các kích thước của đáy và nắp ellipise tiêu chuẩn, có gờ(tài liệu tham khảo §1
trang 381_[3]:
+ Đường kính trong: D
t
= 500 (mm).
+ chiều cao phần lồi của đáy h
b
=0,25D
t
=125(mm).(bảng XIII trang 382_[3])
+ Chiều cao gờ: h
gờ
= h = 40 (mm).
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F
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+Diện tích bề mặt trong: F
đáy
= 0,33 (m
2
).

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Vậy ta chọn bề dày chung cho thiết bị là 3mm
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Bảng: Kích thước của bích ghép thân, đáy nắp
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Vị trí nhập liệu :
•PVB>L`5:5;SG>34P
›
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F
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x

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FF
=⇒−+=
ρρ
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Bảng: Các thông số của bích ghép ống dẫn nhập liệu
•
B
•
m
•
5
• •

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m
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chọn chiều dài đoạn ống nối để ghép mặt bích: l
F
= 110 (mm). Bảng XIII.32
trang434_[3]
 Ống hơi ở đỉnh tháp:
•PVB>L`5:;l3†F„5;B;WG:
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yy
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DD
h
=
+
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