How do you make oxygen

This process quickly became the principal source of high quality oxygen, nitrogen, and argon. In , compressed oxygen gas was burned with acetylene gas in the first demonstration of oxy-acetylene welding. This technique became a common industrial method of welding and cutting metals. The first use of liquid rocket propellants came in when Robert Goddard of the United States developed a rocket engine using gasoline as the fuel and liquid oxygen as the oxidizer. In , he successfully flew a small liquid-fueled rocket a distance of ft 56 m at a speed of about 60 mph 97 kph.

After World War II, new technologies brought significant improvements to the air separation process used to produce oxygen. Production volumes and purity levels increased while costs decreased. In , over billion cubic feet Oxygen can be produced from a number of materials, using several different methods. The most common natural method is photo-synthesis, in which plants use sunlight convert carbon dioxide in the air into oxygen.

This offsets the respiration process, in which animals convert oxygen in the air back into carbon dioxide. The most common commercial method for producing oxygen is the separation of air using either a cryogenic distillation process or a vacuum swing adsorption process. Nitrogen and argon are also produced by separating them from air. Oxygen can also be produced as the result of a chemical reaction in which oxygen is freed from a chemical compound and becomes a gas.

This method is used to generate limited quantities of oxygen for life support on submarines, aircraft, and spacecraft. Hydrogen and oxygen can be generated by passing an electric current through water and collecting the two gases as they bubble off.

Hydrogen forms at the negative terminal and oxygen at the positive terminal. This method is called electrolysis and produces very pure hydrogen and oxygen. It uses a large amount of electrical energy, however, and is not economical for large-volume production. Most commercial oxygen is produced using a variation of the cryogenic distillation process originally developed in Here are the steps used to produce commercial-grade oxygen from air using the cryogenic distillation process.

Because this process utilizes an extremely cold cryogenic section to separate the air, all impurities that might solidify—such as water vapor, carbon dioxide, and certain heavy hydrocarbons—must first be removed to prevent them from freezing and plugging the cryogenic piping.

A test tube said to contain the last breath of Thomas Edison and given to Henry Ford, and ardent fan, as a keepsake by Edison's son Charles. It is said to contain the last breath of Thomas Alva Edison, the great inventor.

According to Edison's son Charles, a set of eight empty test tubes sat on the table next to Edison's deathbed in Immediately after Edison expired, his physician, put several of the tubes up to Edison's lips to catch the carbon dioxide from his deflating lungs.

Then, the physician carefully sealed each tube with paraffin and gave the tubes to Charles Edison. The museum acquired the tube after the death of both Henry and Clara Ford. There is some discussion among visitors just how much carbon dioxide and how much oxygen currently is contained in the tube.

Earlier in the pandemic there were similar scenes of long lines in countries such as Brazil, the Democratic Republic of Congo, Peru and Venezuela. Unitaid, a global initiative that helps low- and middle-income countries confront public health challenges, puts the lack of supplies of medical oxygen down to its cost, limited infrastructure and logistical difficulties.

Medical oxygen is key to treating people in respiratory distress, whether at home or in hospitals. According to the World Health Organization WHO , one person in five suffering from Covid needs medical oxygen to ensure that the level of oxygen in their blood is sufficient. In February, the WHO estimated that half a million people needed 1. It has identified some 20 countries facing the greatest difficulties with oxygen supplies, including Malawi, Nigeria and Afghanistan. Canisters that can travel with patients with one litre of compressed litres of oxygen contain about litres of normal oxygen.

The machines can be portable or larger to serve a hospital. Cooling to cryogenic temperatures is achieved by heat exchange with product gases as well as after-coolers and expanders.

The air then enters the "cold box," which contains a distillation column with many stages, and an argon column for additional oxygen purification. Oxygen and nitrogen products are warmed by heat exchange with the cold box feeds and pressurized by compressors to the final delivery pressure.

Alternatively, products may be pressurized by small boost compressors. Oxygen storage may be advisable to ensure steady gasifier operation through periods of high oxygen demand. An elevated-pressure nitrogen stream may be useful in integrating the ASU with the gasification plant.

It should be readily available if such an epidemic is raging—that too for two years," he said. I am working on something for serious patients. I have an idea on how to make a ventilator. And another one on pressurized oxygen system," Soni said. Parikh said. We have to prepare," said Baishnab. Government has to be mindful of it. Common citizens, too, must know how to produce oxygen.

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