Pall, a global company known for its purification, separation and filtration products, has declared that it will display its latest silane gas purification system and other pollution control products for use in solar PV production business at Intersolar North America in San Francisco.
Refinement of silane gas used in solar cell manufacture is important to improve the conversion efficiency and yield of solar cells. The Gaskleen PG44000 purification system from Pall is specially formulated for the elimination of trace metal dopants, siloxanes and moisture to sub-ppb levels from bulk volume of silane gas. The system includes a filter to assist removal of particles efficiently. It can work at 27.5 MPa / 3,000 psi and can be made to manage up to 4,000 L/min, thus allowing it to be fit for use in silicon and polysilicon manufacturing. To assist amorphous silicon PV cell production, the company provides smaller sized point-of-use silane purifiers utilizing the same SIP medium AresKleen.
The company will showcase its Gaskleen purifier kits with AresKleen HCLP medium that has proven efficiency to remove trace moisture to < 15 parts per billion (ppb) from HCl gas, which is utilized in the development of trichlorosilane, a key product in the manufacture of polysilicon.
It’s fully automatic Water Reclaim System to be displayed in the expo will retrieve more than 90% of deionized water utilized in the silicon ingot shaping process. The system without utilizing any chemical additives cost- effectively gets rid of the secondary silicon fines thus making the water particle-free for recycling. Pall is also planning to exhibit its Blowback Filtration Systems used in the guarding of CZ ingot puller vacuum pumps. These systems will feature efficient, porous stainless steel filters for argon recycling.
Source: http://www.pall.com/