真空脱气膜MDPPT课件

PP材质膜壁 水分子
向方流水
各种气体分子
膜 孔 0.03um 只 能 通 过各种气体分子, Strip gas & Vacuum 水分子则不能通过
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MD的运转模型
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除气膜的制作
300 µm
200 µm
0.03 µm Pore
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MD的使用模式设计
15
25
35
45
75 Two Contactor in Series
15
25
35
45
Temperature 20ºC
Water Flow Rate (m3/hr)
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压降曲线：
Pressure Drop (psig) Pressure Drop (psig) Pressure Drop (psig)
MD的用途
可除去以下气体： 水中溶解的O2 水中溶解的CO2 水中溶解的N2等其他气体 水中由O3转化而来的O2（消毒杀菌尾声）
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MD的工作原理
Henry’s Law DO=H *Po2 液体中所溶解的气体量跟此气体在液气 界面上气体空间的分压成正比关系。
Dalton’s Law Ptotal=PH2o +PN2 + PO2+………. 混合气体的总压力等于各种气体分压的 总和。
Liquid Outlet
Parallel Configuratio n for Flow
Liquid Outlet
Liquid Inlet
Series Configuratio n for Efficiency
Liquid Inlet
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GSMC ＵPW系统一段MD设计模式
48 Contactor
Water Flow Rate
(gal/min)
0 5 10 15 20 25 30 16
14
1
12 .75
10
8
Shellside
.50
6
4
.25
2
0 0 20 40 60 80 100 110
Water Flow Rate (liter/min)
1028 Contactor
Water Flow Rate (gal/min)
50
100
150
200
250
8
6
4
Shellside
2
0 15
25
35
45
55
Water Flow Rate (m3/h)
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产品系列
2.5 x 8-inch Contactor
Single Unit Capacity: 0.5 gpm – 3 gpm (0.1 – 0.7 m3/h)
POU
Liqui-Cel
Liqui-Cel
UV
N2 , O2 Removal
Total Gas Control
and Final Polishing 13
of O2
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纯水系统中MD使用点
Pretreatmen t
No.2RO
Ion Exchange
DI Tank
Recycle
Liqui-Cel Liqui-Cel
Membrane Degasify Introduction
Extra-Flow Membrane Contactor Technology
for Gas Transfer
MD
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概要
MD的用途 MD的工作原理介绍 MD的使用 MD产品的相关信息
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DRAIN
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纯水系统中可能使用MD 之POU
Liqui-Cel
Pretreatmen t
RO
Vacuum Tower
RO Tank
Reclaim
O2 and CRtBLooaOeRmoc2kpeocivynactlloe
Liqui-Cel Liqui-Cel
DI Tank
Ion Exchang
进水
234
1
5
出水
进０.７Mp N2
共五组并联，每组２个串联
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MD串联系统架构
N2 FEED
PI FI
FI
PRODUCT WATER
SAMPLE
CONTACTOR
CONTACTOR
FEED WATER
PI
PI VAC EXHAUST
CHECK
DRAIN
VALVE VENT/
90 110 130 150 170 190 100
Combo
90
50 mm Hg
90 110 130 150 170 190 100
Combo 95 50 mm Hg
90
Oxygen Removal (%) Oxygen Removal (%)
80
100 mm Hg
85 100 mm Hg
80
70 One Contactor
UPW Tank
Polisher No.1
Polisher No.2
UV No.2
UV No.1
CfoOr 2IoRnemBeodvaLlife Extension
Final Filter POU
N2 , O2 Removal
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MD 之性能曲线
Water Flow Rate (gpm)
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Henry&Dalton定律的运用
Henry’s Law DOo2= H1 *Po2
Po2=H2* Ptotal
Vacuum
Dalton’s Law Ptotal=PH2o + PN2 + PO2+……
Gas strip
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MD操作模式的发展
Strip gas
WaterTo Vacuum outlet
Water Strip gas outlet
Water outlet
Strip gas
A
To Vacuum
Water
ຫໍສະໝຸດ Baiduinlet
B
目前，一般采用C模式
To Vacuum
Water inlet
C
Water inlet
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MD工作原理剖析图
Strip gas 高压N2分子
Membrane Area: 15.1 ft2 (1.4 m2) All Polyolefin Contactor
4 x 28-inch Contactor Single Unit Capacity: 5 gpm – 30 gpm (1.1–6.8 m3/h) Membrane Area: 210 ft2 (19.5 m2) Vessel: Polypropylene, Stainless Steel or PVDF
e
Process O2 Removal. Hybrid or Stand Alone
System
Liqui-Cel
UV
UV
ERCexremcaeotsevsdaOlfr2om O3 CfoOr 2IoRnemBeodvaLlife Extension Conversion
Polisher
Final Filter