Help me find common sense about oxygen production safety

The simplest method of oxygen production is as follows:

1. Add hydrogen peroxide to the Erlenmeyer flask first, and then use a small medicine spoon to take a small amount of manganese dioxide from the manganese dioxide medicine bottle and add it to the Erlenmeyer flask, and immediately collect oxygen with the installed gas collection device.

2. Mix potassium chlorate and manganese dioxide into the test tube for heating (pay attention to preheating), and then collect the gas from the installed gas collection device.

3. Potassium permanganate is directly added to the test tube and heated with an alcohol lamp (the same as above, it should be preheated before heating), and then the oxygen is collected with the installed gas collection device.

4. Air refrigeration separation method: the main components in the air are oxygen and nitrogen. The preparation of oxygen from air using the different boiling points of oxygen and nitrogen is called air separation.

The air is pre-cooled and purified (removing a small amount of moisture, carbon dioxide, acetylene, hydrocarbons and other gases and impurities such as dust from the air), and then compressed and cooled to become liquid air.

Then, taking advantage of the difference in the boiling points of oxygen and nitrogen, the liquid air high chain gas is evaporated and condensed several times in the distillation column to separate oxygen and nitrogen to obtain pure oxygen (purity) and pure nitrogen (purity.

5. Molecular sieve oxygen method (adsorption method): using the characteristics that nitrogen molecules are larger than oxygen molecules, special molecular sieves are used to separate oxygen in the air. First, the compressor forces the dry air to enter the vacuum adsorber through the molecular sieve, so that the nitrogen molecules in the air are adsorbed by the molecular sieve, and the oxygen enters the adsorber.

When the oxygen in the adsorber reaches a certain amount (the pressure reaches a certain level), the oxygen outlet valve can be opened to release the oxygen.

Oxygen is a gas that is inseparable from life activities. We all know that oxygen in the air is produced by the photosynthesis of green plants and algae, and the proportion of oxygen in the air is about 21% of grandchildren.

The simple way to produce oxygen in life is to go to the pharmacy to buy disinfectant potion, that is, hydrogen peroxide, and then use fresh pig liver (or red brick powder) as a catalyst to make O2.

The reaction equation is: 2H2O2 = catalyst = 2H2O+O2.

Oxygen test. Test Method:

Inspection: Use a wooden strip with sparks to reach into the gas collection cylinder, if the wooden strip rekindles, it proves to be O2.

Full: Place a wooden strip with sparks on the mouth of the gas collector bottle, if the strip rekindles, it proves that the O2 is full.

Oxygen is a strong oxidizing agent, flammable and explosive. However, it is still safe to use it correctly according to the regulations, especially when opening the last valve with oxygen for the first time.

Before the installation of the oxygen pipeline, it should be cleaned with carbon tetrachloride, the pipeline has good tightness, the strength test is qualified, and it should be fully cleaned with N2 or dry, oil-free compressed air.

Charge N2 Suihua, before opening the oxygen valve, charge N2 first, then open the valve, after the oxygen is turned on, close the N2 valve in time.

Open the oxygen valve slowly, and the last valve should be done at a distance.

The environment should be clean, and the tools used and the work clothes worn must be oil-free. Tools should be made of copper or chrome.

Oxygen production method: 1. Heating potassium permanganate: potassium permanganate generates potassium manganate, manganese dioxide and oxygen under heating conditions.

2. Separation of liquid air method.

Pressurized at low temperatures, the air is transformed into a liquid state, and then evaporated, because the boiling point of liquid nitrogen is 196, which is lower than the boiling point of liquid oxygen (183), so nitrogen first evaporates from liquid air, and the main thing that remains is liquid oxygen.

3. Membrane separation technology.

Membrane separation technology has developed rapidly. Using this technology, oxygen-rich air with a high oxygen content can be obtained by passing air through a membrane with oxygen-enriching function at a certain pressure. Using this membrane for multi-stage separation, oxygen-rich air with more than 90% oxygen can be obtained.

4. Molecular sieve oxygen production method (adsorption method).

Taking advantage of the fact that nitrogen molecules are larger than oxygen molecules, special molecular sieves are used to separate oxygen from the air.

First of all, the compressor is used to force the dry air to enter the adsorber of the vacuum through the molecular sieve, the nitrogen molecules in the air are adsorbed by the molecular sieve, and the oxygen enters the adsorbber, and when the oxygen in the adsorber reaches a certain amount (the pressure reaches a certain level), the oxygen valve can be opened to release the oxygen.

5. Catalytic decomposition of hydrogen peroxide solution: generation of water and oxygen.

The oxygen production method has zeolite air separation method, and the following is the principle, equipment, advantages and application of zeolite air separation method.

1. The principle of the silver bench of zeolite air separation method: zeolite is a porous mineral with many tiny voids inside, which can adsorb and separate oxygen and nitrogen in the air. When high-temperature and high-pressure air flows through the zeolite, the oxygen in the air will enter the zeolite through the voids of the zeolite, and the nitrogen will be expelled.

2. Equipment for zeolite air separation method: Zeolite air separation equipment mainly includes heating system, cooling system, vacuum system and adsorption system. The heating system is used to provide air at high temperature and pressure; The cooling system is used to reduce the temperature of the air; A vacuum system is used to extract nitrogen from the air so that the oxygen inside the zeolite can be purified.

3. Advantages of zeolite air separation method: Zeolite air separation method is a very simple and effective oxygen production method, which has low equipment cost, easy operation, and no need to consume electricity or fuel. In addition, the zeolite air separation method can also achieve continuous production with high production efficiency.

4. Application of zeolite air separation method: The oxygen obtained by zeolite air separation method is widely used in medical, industrial, agricultural and other fields. In the medical field, oxygen is used as a variety of ** means; In the industrial sector, oxygen is used as an incendiary agent, oxidizing agent, etc.; In the Consular Territory of Agriculture, oxygen is used as a gas fertilizer to promote the growth of crops.

The oxygen production method has a physical oxygen production method, which mainly uses the different boiling points of various gases in the air to separate the oxygen in the air through heating and cooling. The specific steps are as follows:

1. First of all, pass the air through the pretreatment equipment to remove moisture, carbon dioxide and other impurities.

2. Then, the pretreated air is introduced into a large pressure vessel.

3. In the pressure vessel, some components in it reach the boiling point and evaporate by heating or cooling the air.

4. Finally, the evaporated gas is cooled through the condenser to condense it into a liquid state, and then converted into solid oxygen through the process of compression and expansion.

One of the simplest ways to produce oxygen is by breaking down hydrogen peroxide (also known as aqueous hydrogen peroxide solution or hydrogen peroxide). Hydrogen peroxide can be quietly broken down into oxygen and water, and the oxygen produced can be used for oxygen needs.

The steps for oxygen production are as follows:

1.Prepare an aqueous solution of hydrogen peroxide for nuclear fibrillation: purchase or prepare an appropriate amount of aqueous hydrogen peroxide. Please note that hydrogen peroxide is a strong oxidizing agent and needs to be handled with care and safe handling followed.

2.Pour into an appropriate container: Pour the aqueous solution of hydrogen peroxide into one container.

3.Pyrolysis: By heating an aqueous solution of hydrogen peroxide, its decomposition reaction can be accelerated. Heating can be done using a heater or a fire source, but the temperature needs to be carefully controlled to avoid overheating and creating hazards.

4.Collecting oxygen: When hydrogen peroxide breaks down, oxygen is released. Use an appropriate device, such as a balloon or gas collection cylinder, to collect the oxygen produced.

It is important to note that this simple method of oxygen production is not suitable for producing large quantities or high purity oxygen. In applications that require large amounts of oxygen, oxygen generation is usually carried out using a specialized oxygen generator or oxygen concentration equipment for the slag. In addition, any oxygen generation process should follow safe operations and relevant regulations to ensure the safety of operators and the environment.