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Suskystintas dujas (SND)

Liquefied petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.

It is increasingly used as an aerosol propellant and a refrigerant, replacing chlorofluorocarbons in an effort to reduce damage to the ozone layer. When specifically used as a vehicle fuel it is often referred to as autogas.

Varieties of LPG bought and sold include mixes that are primarily propane, primarily butane and, most commonly, mixes including both propane and butane. In winter, the mixes contain more propane, while in summer, they contain more butane.

LPG is prepared by refining petroleum or "wet" natural gas, and is almost entirely derived from fossil fuel sources, being manufactured during the refining of petroleum (crude oil), or extracted from petroleum or natural gas streams as they emerge from the ground. It was first produced in 1910 by Dr. Walter Snelling, and the first commercial products appeared in 1912. It currently provides about 3% of all energy consumed, and burns relatively cleanly with no soot and very few sulfur emissions. As it is a gas, it does not pose ground or water pollution hazards, but it can cause air pollution. LPG has a typical specific calorific value of 46.1 MJ/kg compared with 42.5 MJ/kg for fuel oil and 43.5 MJ/kg for premium grade petrol (gasoline).[6] However, its energy density per volume unit of 26 MJ/L is lower than either that of petrol or fuel oil, as its relative density is lower (about 0.5–0.58 kg/L, compared to 0.71–0.77 kg/L for gasoline).

We produce following types of gases:
SPBT – mixture of propane and butane
BT – commercial butane
PBA – motor propane-butane

MAIN TECHNICAL PARAMETERS

DESCRIPTION

TYPES

GOST 20448-90

GOST 27578-87

SPBT

BT

PBA

Components content, w.%:

Total methane, ethane and ethylene
Total methane and ethane

n/a


n/a

Total propane and propylene, min.
Total propane, min.

n/a

n/a


50 ± 10

Total butane and butylenes,
max.
min.
Total hydrocarbons С4 and higher


60



60




n/a

Liquid residue
at +20°C, vol.%, max.
at +40°C


1,6


1,8



none

Hydrogen sulphide and sour sulphur content, w.%, max.

0,013

0,013

0,01

including hydrogen sulphide, % max.

0,003

0,003

0,003