Previous in Forum: Pump Department Manager   Next in Forum: Origin of Life
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
Page 2 of 2: « First < Prev 1 2 Last »
Rate Comments: Nested
HiTekRedNek
Guru

Join Date: Oct 2006
Location: 44.56024"N 15.307971E
Posts: 8277
Good Answers: 270

CO2 as an Inert Gas

07/04/2015 9:07 AM

A welder friend of mine was about to cut an old kerosene

drum with a oxycetylene torch.

I asked how he had cleaned the drum,and he replied that he had not cleaned it,

he had purged it with CO2 from his truck exhaust for about an hour,which,according

to him,made the contents safe to weld or cut.

I disagreed.He said the had done it many times with no problems.

I wished him luck and cleared that area.

I did not hear a KABOOM!.

He got away with it again.

I know that CO2,in the right conditions is explosive and felt this was very dangerous.

Anyone else agree or disagree?

__________________
 "A man never stands so tall as when he stoops to help a child." "Never argue with a stupid person.They will drag you down to their level and beat you with experience" "To create an apple pie from scratch, first you must create a universe"
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
JWthetech
Guru
Fans of Old Computers - ZX-81 - New Member

Join Date: Feb 2011
Location: 18N 65W o
Posts: 1003
Good Answers: 28
#101
In reply to #100
 Find in discussion

Re: CO2 as an Inert Gas

07/11/2015 5:23 PM

I think I stated that. The Carbon ends up as lamp black, the O2 combines with 2Mg forming 2MgO. "LEO the lion says GER."
Register to Reply
redfred
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15600
Good Answers: 981
#102
In reply to #101

Re: CO2 as an Inert Gas

07/11/2015 5:30 PM

Your first sentence is "CO2 in fact does burn." It doesn't it is the oxidizer in this reaction.

__________________
 "Don't disturb my circles." translation of Archimedes last words
Register to Reply
JWthetech
Guru
Fans of Old Computers - ZX-81 - New Member

Join Date: Feb 2011
Location: 18N 65W o
Posts: 1003
Good Answers: 28
#103
In reply to #102

Re: CO2 as an Inert Gas

07/11/2015 9:55 PM

Point taken, I should have stated consumed, and your still wrong, CO2 is not oxidized the O2 is the C is reduced to lamp black so there.
Register to Reply
redfred
Guru
Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15600
Good Answers: 981
#104
In reply to #103

Re: CO2 as an Inert Gas

07/11/2015 10:09 PM

Touché

__________________
 "Don't disturb my circles." translation of Archimedes last words
Register to Reply
Andy Germany
Guru
Popular Science - Weaponology - New Member Safety - ESD - New Member Hobbies - Fishing - New Member

Join Date: Sep 2006
Location: Near Frankfurt am Main, Germany. 50.390866N, 8.884827E
Posts: 17996
Good Answers: 200
#106
In reply to #103

Re: CO2 as an Inert Gas

07/12/2015 5:32 AM

That makes chemical "sense" even to me....thanks.

I remember doing the experiment in the Chem Lab in the late 50's, it crackles well!!!

Whereby using Oxygen it burned REALLY bright, but relatively quiet...in comparison!!

__________________
 "What others say about you reveals more about them, than it does you." Anon.
Register to Reply
phph001
Guru

Join Date: Oct 2009
Posts: 1460
Good Answers: 30
#105
In reply to #100
 Find in discussion

Re: CO2 as an Inert Gas

07/12/2015 3:40 AM

Burning is the combination of a fuel with oxygen. It is a process of oxidation, not reduction. The process of splitting the CO2 is not an oxidation either.
Register to Reply
Register to Reply
Have a Different Question?
Page 2 of 2: « First < Prev 1 2 Last »

Good Answers:

These comments received enough positive votes to make them "good answers".

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

4wsilver (1); adreasler (5); agua_doc (1); Andy Germany (18); BestInShow (1); bob c (12); Canary (5); dhayanandhan (1); energyconversion (1); enervac (1); Fredski (1); HiTekRedNek (6); JBTardis (1); jurie sa (2); JWthetech (3); Kevin LaPaire (2); Kulas (1); lyn (10); Nothing is Impossible (2); old salt (6); phph001 (5); Phys (2); redfred (11); roy hammy (1); SHOCKHISCAN (1); tcmtech (1); texasron (1); Tom_Consulting (2); Wal (2)

Previous in Forum: Pump Department Manager   Next in Forum: Origin of Life

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
General Discussion:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (58 right now)
Show Members
Advertisement