Air Products has brought a large-scale, on-site ammonia (NH3) plant on-stream in China’s Anhui Province to supply ultra high-purity NH3 to Anhui Sanan OptoElectronics Co. Ltd, a subsidiary of Sanan OptoElectronics (Sanan).

The plant, located at Sanan’s new high brightness LED (light emitting diode) manufacturing facility in the Wuhu Economic and Technological Development Area, is the largest on-site high-purity NH3 facility in the world with a supply capacity of 2,000 metrics tons per year.

Sanan is the largest high quality LED manufacturer in China. To support Sanan’s expansion plan, Air Products is also building a second high-purity NH3 plant with the same capacity, which is expected to be onstream in the middle of 2012.

Large volumes of NH3 are needed to provide the nitrogen source for the gallium nitride layers used in the manufacture of LEDs.

“By working closely together, we successfully brought the world’s first and largest on-site facility onstream. It is a milestone for both Sanan and Air Products”

Steve Jones

A grand opening ceremony was held on 12th December at Sanan’s Wuhu facility to celebrate the milestone. Attendees included Steve Jones, Air Products’ China President and Senior Vice-President and General Manager of Global Tonnage Gases, Energy and Equipment; Joseph Stockunas, Director of electronics materials for Air Products; and representatives from Sanan.

“Air Products has a long and proven record of building large-scale, on-site industrial gas plants around the world. We are pleased Sanan OptoElectronics chose Air Products for their high-purity ammonia supply to support its increased LED production. By working closely together, we successfully brought the world’s first and largest on-site facility onstream. It is a milestone for both Sanan and Air Products,” said Jones.

“LED is an exciting market for Air Products. We will continue to leverage our leading technologies, excellent reliability and safety records to support the growing market needs.”

Air Products pioneered the on-site industrial gas supply mode in the 1940s. Since then, it has been building on-site facilities serving refining, chemicals, steel and glass-making industries around the world.

Increasing applications

LEDs are used in applications such as automotive and traffic signage, and are displacing conventional lighting alternatives based on their ability to operate at reduced power, lower temperature and with extended lifetimes.

LEDs are also increasingly finding use as backlighting for televisions and displays.