OXYGEN FROM WATER-POWERPOINT

OXYGEN FROM WATER-POWERPOINT - Water to Breathe? A new...

Info iconThis preview shows pages 1–18. Sign up to view the full content.

View Full Document Right Arrow Icon
Water to Breathe? A new technology may make it possible…
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Oxygen From Water Group 7 Anh Nguyen Juste Tchandja Dustin Duke Justin Brown Jorge Arias Keith Orendorff May 2, 2003
Background image of page 2
New Technology • A recently discovered technology uses the compound [H 2 O(terpy)Mn(O) 2 Mn(terpy)OH 2 ](NO 3 ) 3 (oxygen evolving complex OEC) to catalyze the evolution of oxygen from water.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Project Objective • To develop and design a profitable process that uses the OEC to produce oxygen from water.
Background image of page 4
Proposal • We propose a process that will use the OEC with a series of multifunction reactors, a hydrogen oxygen separator and solar power to provide life-supporting oxygen on manned space exploration missions. • As a basis for comparison we examine oxygen production to support a five man crew.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Space Exploration • Currently, water electrolysis provides oxygen for the International Space Station and Mir. • Also electrolysis is proposed for Mars exploration. • Our task is to see if we can offer advantages over electrolysis.
Background image of page 6
Presentation Outline How the Chemistry Works Process Design / Technical Details Mars Logistics Economic Justification Conclusion
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemistry • Process utilizes 2 sets of reactions. – Oxygen Production/Catalyst Regeneration – Sulfuric Acid Regeneration/O 2 Recovery • 2 reactors involved – 1 CSTR and 1 PFTR • After several revisions to original design
Background image of page 8
Main Catalyst •C 30 H 22 Mn 2 N 6 O 2 • In the process, the hydrated from is used. 30 H 26 Mn 2 N 6 O 4 • This has an additional water molecule attached to the Mn atom. Mn Mn O O N N NN N N
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Overview of Chemistry • Oxygen Production/Catalyst Regeneration 17H 2 O + H 2 SO 4 17H 2 + 8O 2 + H 2 SO 5 • Sulfuric Acid Regeneration/O 2 Recovery H 2 SO 5 H 2 SO 4 + ½O 2 • Overall – 17H 2 O 17H 2 + 8.5O 2 – Daily: 2400H 2 O 2400H 2 + 1200O 2
Background image of page 10
Chemistry: In the Beginning • Original Design was based on a direct scale up from the chemistry – Everything added to a beaker was poured into a batch reactor – Very Complicated Design
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Problems: In the Beginning •H 2 SO 4 regenerated NO/NO 2 reaction – Air contamination • Many reactors – Complicated PFD
Background image of page 12
The Beginning… ugly R1 R2 R4 C 1 P 1 P 2 R3 S1 S2 C 2
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Middle Ages • We get wiser, eliminate NO/NO 2 – Equipment Eliminated • 1 Reactor • 1 Separator •2 Pump s – Healthier solution regenerates with MnO 2 catalyst • No new chemicals added
Background image of page 14
Still in the Dark • Problem: Perpetual Acid Dilution • Still complicated PFD
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Not so Bright PFD R1 R2 C1 P1 R3 S1 17 H2O 17 H2O 3 H2 3 H2 7 H2SO4 1 H2SO5 6 H2SO4 1 H2SO5 6 H2SO4 0.5 O2 17 H2 8.5 O2
Background image of page 16
Chemistry Conquered: Bright Ideas • Realize catalyst regeneration and O 2 production can occur simultaneously – Allows for continuous process • Possible because – Catalyst not affected by pH –O 2 production is the Rate Limiting Step
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 18
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/31/2011 for the course CHE 4273 taught by Professor Staff during the Spring '10 term at Oklahoma State.

Page1 / 62

OXYGEN FROM WATER-POWERPOINT - Water to Breathe? A new...

This preview shows document pages 1 - 18. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online