【Daily Question】Advanced Processing 20160806 Short Answer: What are the basic properties of liquefied gas?

Liquefied gas is colorless, odorless, and gaseous at normal temperature and pressure. Usually, an additive with a strong odor is added to it, so that people can detect a leak of liquefied gas. Liquefied gas is colorless and odorless in a gaseous state at normal temperature and pressure; it can be converted into a liquid state by cooling or increasing pressure, and it is turned back into a gaseous state by reducing pressure or raising temperature before use. When it transitions from a liquid to a gas, its volume expands by about 250-300 times. Liquefied gas in liquid form is lighter than water, usually weighing 0.5-0.6 times as much as water. Gaseous liquefied gas is heavier than air, being about 1.5 to 2 times as heavy as air. The volume expansion capacity of liquefied gas in its liquid state is about 10–16 times that of the gas phase. In a container filled with liquid liquefied gas, the pressure inside increases sharply for every 1-degree rise in temperature. Gaseous liquefied gas has a relatively high density, 1.5–2.0 times that of air; once it leaks, it tends to accumulate in low-lying areas and does not spread easily. Liquefied petroleum gas is a high-calorific-value, pollution-free energy source. Its fully burned products are carbon dioxide and water; its flame temperature reaches up to 2000 degrees Celsius, and its calorific value is three times that of natural gas and five times that of artificial gas. 8. When the concentration of liquefied petroleum gas in the air reaches a certain level, it can cause dizziness and nausea in people; in severe cases, it can be fatal. 9. Gaseous liquefied petroleum gas has a relatively low ignition temperature, ranging from 360 degrees Celsius to 460 degrees Celsius. It can explode when exposed to an open flame at concentrations of 1.5% to 9.5%. Leaks of liquefied petroleum gas can lead to serious hazards; therefore, it is a flammable, explosive, and combustible gas. 10. The main hazards of liquefied petroleum gas are three: flammability and explosiveness, frostbite, and toxicity. 11. Liquefied petroleum gas is classified as a Class A hazardous material.

Liquefied gas is colorless, odorless, and gaseous at normal temperature and pressure. Usually, an additive with a strong odor is added to it, so that people can detect a leak of liquefied gas. Liquefied gas is colorless and odorless in a gaseous state at normal temperature and pressure; it can be converted into a liquid state by cooling or increasing pressure, and it is turned back into a gaseous state by reducing pressure or raising temperature before use. When it transitions from a liquid to a gas, its volume expands by about 250-300 times. Liquefied gas in liquid form is lighter than water, usually weighing 0.5-0.6 times as much as water. Gaseous liquefied petroleum gas is heavier than air, being about 1.5 to 2 times as heavy as air. The volume expansion capacity of liquefied gas in its liquid state is about 10–16 times that of water. In a container filled with liquid liquefied petroleum gas, the pressure inside increases sharply for every 1-degree rise in temperature. Gaseous liquefied petroleum gas has a relatively high density, 1.5–2.0 times that of air; once it leaks, it tends to accumulate in low-lying areas and does not spread easily. Liquefied gas is a high-calorific-value, pollution-free energy source. Its fully burned products are carbon dioxide and water; its flame temperature reaches up to 2000 degrees Celsius, and its calorific value is three times that of natural gas and five times that of artificial gas. When the concentration of liquefied gas in the air reaches a certain level, it can cause dizziness and nausea in people, and in severe cases, it can be fatal. Liquefied gas in gaseous form has a relatively low ignition temperature, ranging from 360 degrees Celsius to 460 degrees Celsius. It can explode when exposed to an open flame when its concentration is between 1.5% and 9.5%. Leaks of liquefied gas can lead to serious dangers, which is why it is considered a flammable, explosive, and combustible gas. The main hazards of liquefied gas are three: flammability and explosiveness, frostbite, and toxicity. Liquefied gas is classified as a Class A hazardous material.

Liquid, a gas at normal temperature and pressure

As the name implies, a gas that can be liquefied. Liquefied gas is a mixture of C4 hydrocarbons, which can be completely liquefied at room temperature under a pressure of 5 kilograms. Civilian liquefied gas contains trace amounts of sulfur compounds.

It is a mixed gas whose main components are propane, propylene, butane, and butylene; it is in gaseous state at normal temperature and pressure. When the pressure increases or the temperature decreases, it easily turns into a liquid state, which makes it convenient for storage and transportation.

Its main components are C3 and C4, which are in liquid state at certain pressures and temperatures. Due to their low boiling points, they are in gaseous state at normal temperature and pressure; in this gaseous state, they are 1.5–2.0 times denser than air. The saturated vapor pressure of liquefied gas increases sharply as the temperature rises, and its coefficient of thermal expansion is also high, generally more than 10 times that of water. Liquefied gas has a low flash point, below 0 degrees Celsius.

The main components of liquefied gas are C3 and C4; they are in a liquid state at certain pressures and temperatures. Due to their low boiling points, they are in a gaseous state at normal temperature and pressure. In their gaseous state, they are 1.5–2.0 times denser than air. The saturated vapor pressure of liquefied gas increases sharply as the temperature rises

Flammable and explosive, causes frostbite, denser than air, tends to accumulate in low-lying areas!

The main components are propane, butane, propylene, and butylene. Status: It is gaseous at normal temperature and pressure; when stored in specialized cylinders, it exists in both liquid and gas phases. When in use, it volatilizes into a gas about 250 times its volume. It is flammable and explosive, and can easily explode when exposed to open flames or sparks. Within a certain range, when the concentration of liquefied petroleum gas in the air is between 1.5% and 9.5%, it can explode upon contact with an open flame or spark. The specific gravity of liquefied petroleum gas is 1.52; once it leaks, it will settle in low-lying areas and not disperse easily. Odorized liquefied petroleum gas contains a special odor, making it easy to detect in the event of a leak. Liquefied petroleum gas has a mild anesthetic effect; excessive inhalation can cause oxygen deficiency and lead to death by asphyxiation. Liquefied petroleum gas can soften and deteriorate ordinary rubber, so special rubber hoses must be used. The normal color of a flame is blue, with no black smoke. If liquefied petroleum gas burns incompletely, large amounts of carbon monoxide are produced, and inhaling it can easily lead to poisoning and even death. When liquefied petroleum gas burns completely, the amount of air required is approximately 25 times that of the gas itself. Therefore, good ventilation in the kitchen, bathroom, and around cooking appliances should be maintained.