What impact does bottled LPG bring convenience to life?

Bottled liquefied petroleum gas began to be used in China in the 60s, and it was developed after the reform and opening up in the 80s, and after entering 2000, it was basically popularized in China's cities. The main components of bottled LPG are propane and butane, which are liquefied and placed in specific storage tanks.

In the early days of reform and opening up, briquettes were widely used in China, which were fully mixed with coal powder and loess in a certain proportion, beaten out with special molds, and stored for long-term use after drying. However, it burns with too strong smoke smell, crude and backward production methods, pollutes the environment, and takes up a lot of space for storage, so it is gradually phased out after the production of bottled liquefied petroleum gas, a new fuel. Bottled liquefied petroleum gas corresponds to the briquettes used at that time, so we often say that it is gas, its use only needs to be equipped with gas stoves, pipe lines, open and use, can be closed at any time after use, the use cycle is long, and the storage does not occupy space, so it brings convenience to our lives.

There are pros and cons to everything, and bottled LPG also has great safety risks. In the news, there will be bottled liquefied petroleum gas ** events every year, because of its high storage requirements, so the normal service life of storage tanks is generally 15 years, and more than 15 years must be scrapped. Some of the reasons are that the gas canister is not replaced in time.

In addition, some tanks themselves have quality problems, which makes it easy to collide during transportation, and some are impure gases from individual "black gas stations", and there is air in them. At the same time, the aging of the pipeline or improper use of the valve is not closed, the valve leaks and other reasons will cause gas leakage, resulting in gas poisoning for residents, and in severe cases, death due to respiratory paralysis. Therefore, the use of gas cylinders also requires us to have relevant professional safety knowledge, and the relevant regulatory authorities should also increase the supervision of orange juice.

Modern China has begun to popularize a new fuel - natural gas, which is colorless, tasteless, and more importantly, non-toxic, more convenient to use and cheaper than bottled liquefied petroleum gas, science is advancing, and our quality of life is improving step by step.

There are potential safety hazards, the service life and use specifications of the bottle, the specification of the filling process, and the storage and transportation of bottled liquefied gas There are safety risks, and a little carelessness will cause serious accidents.

It is an indisputable fact that bottled liquefied petroleum gas brings a lot of convenience to life, but it will also have great safety risks. Because it is flammable, explosive and toxic, if you are not careful, it is easy to cause ** or poisoning accidents.

Liquefied petroleum gas is a flammable and explosive item, when its concentration in the air reaches a certain level, it is very easy to encounter an open flame, and it is easy to cause **.

Bottled liquefied petroleum gas has brought a lot of convenience to people's lives, some places can't get into the old nuclear gas, some families use bottled liquefied petroleum gas for cooking, and some also use bottled liquefied petroleum gas for hot water. However, although bottled LPG brings a lot of convenience to life, it will also be a great safety hazard.

1. Liquefied petroleum gas is flammable and explosive. Liquefied petroleum gas is a substance that is easy to burn, and when its concentration in the air reaches a certain level, it is extremely easy to cause open flames.

Second, the use of bottled liquefied petroleum gas is easy to cause ** and poisoning. Liquefied petroleum gas is a toxic gas, but this toxicity has certain conditions, only when the concentration of liquefied petroleum gas in the air reaches 10%, human absorption of air will cause a poisoning reaction.

Some people use bottled LPG, improper operation leads to LPG leakage, at this time, if you encounter a fire that is quickly lit by a piece of ants, it will cause **, which will blow up the entire house, or blow up the entire floor, and the consequences are unimaginable.

In addition, even if LPG does not encounter an open flame, it can cause poisoning when it reaches a certain concentration in the air. The symptom of poisoning is nausea, vomiting and even coma, which will cause great harm to the human body. And LPG is also easy to flow, and when LPG leaks out, it will spread inside the substance.

So LPG is a dangerous item.

Although liquefied petroleum gas has brought many benefits to our lives, it is also important to note that it is a flammable and explosive substance, and improper use can cause serious consequences. For example, to cause **, for example, to cause poisoning. Therefore, whether you can use this kind of thing or less in your life, after all, safety is the most important thing, after all, there is only one life.

Do you use LPG in your life?

Answer ba Hurry up and turn on the electric wheel rock tung lamp in the kitchen, turning on the light will produce electric sparks, which is easy to ignite the mixed gas, and it is dangerous, so it is wrong.

B immediately open all doors and windows for ventilation, which will make the indoor air convection, reduce the temperature of the gas and reduce the concentration of flammable gas, so that the mixed gas can not reach the ignition point and the limit, so B is right.

c The flammability of gas, the gas mixed with air is easy to fire or heat up, and it is easy to cause combustion when the gas stove leaks

d Calling the fire alarm with a mobile phone in time in the kitchen is also easy to cause**, so it is wrong.

In daily life, residents make the canned liquefied petroleum gas used for debate carry a good uproar, and in the production, the compressed volume, that is, the pressure liquefies the liquefied petroleum gas;

In use, liquid LPG socks are vaporized into gas;

Therefore, choose a and c

In daily life, the canned liquefied petroleum gas used by residents is produced by compressing the volume, that is, liquefiing the LPG under pressure;

In use, liquid petroleum gas is vaporized into gas;

Therefore, choose a and c

Answer B As a by-product in the petrochemical production process, liquefied gas is mainly composed of propane, butane, butene, and other hydrocarbons such as pentane and hexane with relatively large molecular weight, so a small amount of liquid will remain after use

These residual liquids are liquid hydrocarbons and will not be water

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Isolate kitchen knives from water and oxygen in the air (2 points).

Vitamin A B

Propane combustion can produce water and carbon dioxide, according to the principle of fire extinguishing, it can be known that after cooking, it is usually combustible to turn off the gas stove switch: (3) rice mainly contains sugar, steamed fish mainly contains protein, braised pork mainly contains protein and oil, tofu soup mainly contains protein, water and a small amount of inorganic salts, which lacks vitamins, can be supplemented by eating vegetables and fruits, excessive consumption of food containing sodium nitrite will cause cancer, formaldehyde is toxic, harmful to the body, and cannot be eaten; Formaldehyde can destroy the structure of proteins, which is not only harmful to the human body, but also changes the quality of foods mainly containing protein.