[TheForge] Vapor/Gas (Was: Building a propane forge)
April and Bill Clemens
[email protected]
Wed Feb 18 11:00:01 2004
Liquefied petroleum gas LPG or LP Gas
At normal temperatures and atmospheric pressure, it exists as a vapor.
In its natural state, propane is an odorless, colorless gas.
In most systems, propane is vaporized to a gas...
Propane vapor disperses readily, as do all gases.
Propane has a narrow range of flammability. The propane/air mix must
contain from 2.2% to 9.6% propane vapor to ignite
Propane will not ignite when combined with air unless the source of
ignition reaches at least 940=B0 Fahrenheit.
The type of LPG used as a vehicle fuel is a liquid mixture
containing at least 90 percent propane, 2.5 percent butane
and higher hydrocarbons, and the balance ethane and
propylene. The mixture is commonly called =93propane.=94
Sources:
http://www.chesmontengineering.com/propanesys.htm
Liquefied petroleum gas (commonly called LPG or LP-gas) is a mixture of
several hydrocarbon gases. Propane and butane, used separately or in
mixtures, are the principal LP-gases. They are either extracted from
natural gas or produced as a result of processing crude oil at
refineries.
Propane is the LP-gas most widely used in the U.S. At normal
temperatures and atmospheric pressure, it exists as a vapor. Producers
convert propane to a liquid by a combination of moderate pressure and
cooling. This greatly reduces space requirements, since approximately
270 gallons of propane vapor can be converted to one gallon of liquid.
Moderate pressure holds the propane in liquid form until needed. A
specially designed pressure vessel is necessary to maintain this
pressure.
http://www.npga.org/i4a/pages/index.cfm?pageid=3D636
What Is Propane?
Propane is a hydrocarbon (C3H8) and is sometimes referred to as
liquefied petroleum gas, LP-gas or LPG. Propane is produced from both
natural gas processing and crude oil refining, in roughly equal amounts.
It is nontoxic, colorless and virtually odorless. As with natural gas, a
strong identifying odor is added so the gas can be readily detected.
http://www.greenbaygas.com/propane-safety.html
Properties of Propane=20
Propane is a liquefied petroleum gas and aromatic hydrocarbon that may
be utilized as a gaseous fuel. Propane's best known hydrocarbon
neighbors are methane (natural gas) and butane (disposable cigarette
lighters). Unlike methane vapor that is lighter than air, propane vapor
is heavier than air. Unlike liquid butane that will not vaporize at
temperatures less than 32 degrees Fahrenheit, liquid propane will
vaporize at any temperature above -44 degrees fahrenheit. A gallon of
liquid propane weighs 4.24 pounds and contains 91,650 BTU's. Propane,
and all other hydrocarbon based fuels, must be kept away from open
flame(s) and ignition sources. Propane must also be handled with care,
transported properly, and stored safely.
http://www.esmagazine.com/CDA/ArticleInformation/features/BNP__Features_
_Item/0,2503,18934,00.html
Commercial propane is one of several liquefied petroleum gases (LPGs)
derived from the processing of natural gas and crude oil. Stored as a
liquid under pressure, propane (C3H8) vaporizes easily to produce a gas.
As a gas, propane is heavier and has a higher energy density than
methane (CH4), the primary component of natural gas. Consequently, some
adjustment is almost always required to burn propane in equipment set up
for natural gas. Using technology similar to utility peak-shaving
plants, a consumer-owned, propane-air standby system avoids this
requirement by blending propane with air to produce a mixed gas with
burning characteristics similar to natural gas. This means gas energy
keeps flowing when the natural gas supply is shut off - with no
adjustments to combustion equipment.=20
http://www.easternpropane.com/PropaneSafety/whatispropane.htm
What is Propane
Propane is a liquid stored under pressure in tanks and cylinders. In
most systems, propane is vaporized to a gas before it leaves the tank or
cylinder and then is dispensed through a pressure regulator to your
appliance.
In its natural state, propane is an odorless, colorless gas. A chemical
odorant is added to propane to give it a distinctive smell so the
presence of propane can be detected. Propane is a convenient, versatile,
and economical fuel for vehicles and appliances (such as ranges, water
heaters, and furnaces).
Propane vapor disperses readily, as do all gases. The movement of
propane vapor, which is heavier than air, can be influenced by such
factors as air currents, relative temperatures, and air flow rates.
Propane vapor should be treated with the same caution as is applied to
other flammable gases.
http://www.blossmangas.com/safetyrecord.html
Propane Safety Facts=20
=95 Propane has a narrow range of flammability. The propane/air mix =
must
contain from 2.2% to 9.6% propane vapor to ignite. Any less that 2.2%
and the mixture is too lean to burn. Any more than 9.6% and the mixture
is too rich to burn.
=20
=95 Propane will not ignite when combined with air unless the source =
of
ignition reaches at least 940=B0 Fahrenheit. In contrast, gasoline will
ignite when the source of ignition reaches 430=B0 to 500=B0 Fahrenheit.=20
http://www.nesea.org/greencarclub/factsheets_liquified_petroleum.pdf
Liquefied petroleum gas (LPG) is a nonrenewable
gaseous fossil fuel, which turns to liquid under moderate
pressure. LPG, a by-product of natural gas processing and
oil refining, includes various mixtures of hydrocarbons.
The type of LPG used as a vehicle fuel is a liquid mixture
containing at least 90 percent propane, 2.5 percent butane
and higher hydrocarbons, and the balance ethane and
propylene. The mixture is commonly called =93propane.=94
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave Brown
Sent: Wednesday, February 18, 2004 10:22 AM
To: [email protected]
Subject: Re: [TheForge] Vapor/Gas (Was: Building a propane forge)
At 07:01 02/18/04, you wrote:
>LPG =3D Liquid Propane Gas ... now that SOUNDS like it is an
oxymoron.
I believe it's Liquefied Propane Gas
<oxymoron removed>
>Just grinning over my morning coffee ..
Yep.
Dave Brown
Heritage Smithing
Green Bay, WI
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