The PSA method and its process for making oxygen, purifying hydrogen, dryingair, refiningCO and CO 2, and its applicationiniron and steelindustry are introduced.
Taking this traditional idea of using air friction and refining it to control the speed of automatic winding, Urwerk has replaced the traditional rotating mechanisms of the past with miniature twin turbines that can be seen spinning on the back of the watch and are connected to the rotor.
Delta Air Lines is getting into the refining business, with the acquisition of a facility south of Philadelphia from ConocoPhillips spinoff Phillips 66.
As the heart of America's petrochemical and oil-refining industries, Texas puts more chemicals into the air than any other state, and by most rankings is the state with the worst toxin level in the atmosphere.