Oxygen high-purity

Oxygen. High purity oxygen for use in semiconductor device manufacture is produced in relatively small quantities compared to nitrogen. There are two different purification processes in general use for manufacturing the gas distillation and chemical conversion plus adsorption. 

Natural Gas Upgrading via Fischer-Tropsch. In the United States, as in other countries, scarcities from World War II revived interest in the synthesis of fuel substances. A study of the economics of Fischer synthesis led to the conclusion that the large-scale production of gasoline from natural gas offered hope for commercial utiHty. In the Hydrocol process (Hydrocarbon Research, Inc.) natural gas was treated with high purity oxygen to produce the synthesis gas which was converted in fluidized beds of kon catalysts (42). 

Other processes include deep tank aeration such as the Biohoch, the use of high purity oxygen, and the Deep Shaft process. 

J. R. Whirter, The Use of High Purity Oxygen in the Activated Sludge ProcesSs Vol. 1, CRC Press, Inc., West Palm Beach, Fla., 1978. 

Basic oxygen furnaces (BOFs) have largely replaced open hearth furnaces for steelmaking. A water-cooled oxygen lance is used to blow high-purity oxygen into the molten metal bath. This causes violent agitation and rapid oxidation of the carbon, impurities, and some of the iron. The reaction is exothermic, and an entire heat cycle requires only 30-50 min. The atmospheric emissions from the BOF process are listed in Table 30-16. 

Semiconductor device manufacture, high purity oxygen in, 13 459 Semiconductor doping, in ion implantation, 14 446-447... 

The three basic types of activated sludge systems are conventional, contact stabilization, and extended aeration systems [40]. Other types include high-purity oxygen systems and sequencing batch reactors, but these are not commonly used in refineries. 

Table 5.22 shows the MPG product stream composition that would be expected from the gasification of natural gas using high-purity oxygen (99.5%) and a small amount of shielding steam. High-pressure steam is produced at a rate of 2.1 kg/Nm3 of feed gas179. 

High Purity Oxygen Generation PSA Process by Using Carbon... 

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