Download - OXYGEN trapping in science & industry
![Page 1: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/1.jpg)
![Page 2: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/2.jpg)
OXYGEN TRAPPING IN SCIENCE
& INDUSTRY
Presented by :niloofar sadat fasih
Superwizer:Dr.Ghazi asgar
![Page 3: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/3.jpg)
•Introduction of oxygen and its properties:
1
•Why O2 Trapping is important in science ??
2
•Reasons to remove O2 in industries??
3
Today’s Overview
•What is OXYGEN Trapping ??4
•Important examples of oxygen trap
5
•References6
![Page 4: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/4.jpg)
Introduction of oxygen and its properties: • Landfill gas
contains O2 which enters the landfill as the landfill gas is withdrawn. • O2 may get added
or introduced in the process of being used in gas dryers.
![Page 5: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/5.jpg)
Why O2 Trapping is important in science??
![Page 6: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/6.jpg)
Oxygen is a column killer .• in UHP gases, leaks allow O2
to influx against the osmotic gradient. • O2 can enter a gas line at any
fitting.
![Page 7: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/7.jpg)
GC needs pure N2 gas
![Page 8: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/8.jpg)
O2 trap should be installed before the gas line enters the Gc.
![Page 9: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/9.jpg)
Reasons to
remove O2 in
industries??
![Page 10: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/10.jpg)
Types of oxygen contaminated natural gas streams
Vacuum
system
• landfills• Vacuum oil
recovery systems
• Coal mine (gob gas) methane
Traditional
pipeline
systems
• May contain only 100 ppm of oxygen
Natural gas
streams :
![Page 11: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/11.jpg)
(LPG(& )LNG )contain some amount of O2• LPG blending processing with air to reduce its calorific value and achieve air balancing.
• Many pipeline specifications require natural gas to contain less than 10 ppm of O2 .
![Page 12: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/12.jpg)
O2 is difficult to separate from natural gas.
• Technology not available and developed • High cost of such a removal project
![Page 13: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/13.jpg)
increase corrosion in pipelines exceed pipeline specifications
![Page 14: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/14.jpg)
2 H2S + 3 O2 2 H20 + 2 SO2
1) O2 reacts with H2S to form sulfur.
2) O2 creates salt in acid gas removal systems and affect the purge streams.
![Page 15: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/15.jpg)
3) O2 cause corrosion in the steel by handling glycol solvents used in drying plants
--
![Page 16: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/16.jpg)
Benefits of using O2 trap in purification natural gas
Prevent degradation of process Chemicals
decrease corrosion
in pipelinesviable Profitable
![Page 17: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/17.jpg)
O2 removal sys are rarely employed& usually abandoned or blended to meet pipeline specifications
Lack of O2
removal system
High capital costs
Lack of industr
ial experti
se
Limited O2
removal range
![Page 18: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/18.jpg)
What is OXYGEN Trappin
g ??
![Page 19: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/19.jpg)
Oxygen removal catalyst is :
A chemical used in a reaction or process to remove O2 from gas streams like :N2, H2, ArSaturated hydrocarbonsEthylenePropyleneAnd more.
![Page 20: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/20.jpg)
Removal of oxygen from gas streams. used for the purification of N2, Ar,CO2.
Adsorbents for O2 Removal
Metal catalysts
Mixed-metal catalysts
![Page 21: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/21.jpg)
Types of O2 trappers catalysts:
Transition metal based deoxidizer (OX-RM)
Hydro deoxygenation catalyst (OX-HR)
Nickel based deoxidizer (OX-RN)
![Page 22: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/22.jpg)
Important
examples of
oxygen trap
![Page 23: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/23.jpg)
Transition Metal Based Deoxidizer OX-RM:
• Takes transition metal oxides as the promoter.• Designed for gas without
hydrogenation directly• The ineffective deoxidizer can
be used through regeneration.
![Page 24: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/24.jpg)
OX-RM Properties: • O2-removal active : Min15 ml O2/g
deoxidizer • Remaining O2 :Max.0.5ppmOperation Conditions (with N2-H2 mixed gas reduction activation before usage) :• Temperature : 200℃• Pressure : 0-6.0MPa• Feedstock gas inlet O2 content :
Max4000ppm• Space velocity :0.5-3.0 hr
![Page 25: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/25.jpg)
EX : Cu-0226 SA copper oxide on a high surface area
alumina sphere catalyst.
Can be restored by regeneration
Removing trace quantities of O2 in
inert gases at 25 ℃.( Up
to 90 % )
Contain
Recovery
Application
![Page 26: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/26.jpg)
Hydro deoxygenation Catalyst OX-HR:
• Chemical composition :Pd-Al2O3• Removing O2 from nitrogen,
hydrogen, and others.
![Page 27: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/27.jpg)
Process conditions:
• Pressure: 0.1-10MPa • Temperature :100-210 ℃ • Space velocity : 1000-2000
hr-1 • Hydrogen/ Oxygen : >2 V/V• Raw material :Nitrogen
oxygen• Activity index :O2 < 10ppm.
![Page 28: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/28.jpg)
EX : ( Puristar R0-20)
Robust , Pd on an alumina carrier.
Removal of O2 and/or
H2 from gas streams. Purification
of N2, Ar , and CO2.
Contain
Deoxo cat
Application
![Page 29: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/29.jpg)
Nickel Based Deoxidizer OX-RN:
• Gases without hydrogenation directly.
• Use at ambient temperature.• Deoxidation activity : ≥20
mlO2/g deoxidizer • Remaining O2 :≤0.5 ppm
![Page 30: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/30.jpg)
Operation (with N2-H2 mixed gas reduction activation before usage):
• Temperature : Room temperature to 200℃• Pressure :MPa 0~2.0• Feedstock gas inlet O2 content :
Max.4000ppm• Feedstock gas inlet dew point :
Max.-60℃• Space velocity :100-300(gas),0.5-
3.0(liquid) hr-1
![Page 31: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/31.jpg)
CuO catalyst tablet regenerate removal of O2, CO,
H2, and other industrial gases and liquids.
Regenerator
DeOxo Removal of O2 and/or H2 from
gas streams. The by-products generated
at H2O and CO2.
![Page 32: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/32.jpg)
Reduce the O2 in N2 streams to 1 ppn
chromatographic suitableNon catalytic properties enable to be packed directly
into columns.
Manganese (II) oxide supported on Celite
![Page 33: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/33.jpg)
![Page 34: OXYGEN trapping in science & industry](https://reader036.vdocuments.site/reader036/viewer/2022062502/5681674f550346895ddc00a1/html5/thumbnails/34.jpg)