Korea Institute of Industrial Technology

Tae U Yu

Dong Ho Park

Byung Moon Moon

Hyun Jin Koo

Sang Wook Lee

Chang Won Yang

Uen Do Lee

Jong Su Kim

Je Sik Shin

Byung Ryeul Bang

Gang June Kim

Eun Su Jang

Ho Moon Lee

The present invention relates to a combustor-independent fluidized bed indirect gasification system for technology for obtaining high quality synthetic gas through effective indirect gasification of low quality fuels, such as biomass/waste/coal, having various properties, and provides a combustor-independent fluidized bed indirect gasification system comprising: a pre-processor having a sorter; a gasifierto which a first fuel sorted in the pre-processor is supplied; a combustorto which a second fuel sorted in the pre-processor is supplied; and a riserconnecting the gasifierand the combustorand having functions of increasing the temperature of a bed material and transferring the bed material therein.

Combustor-independent fluidized bed indirect gasification system

In order to produce metallurgical grade silicon and solar cell grade polysilicon in batches, a method of the present invention comprises: a step of reduction in an arc furnace, consisting of removing C and CO in a silicon reduction atmosphere using silica stone and carbon black by an arc so as to produce metallurgical grade silicon; a step of refining by slag consisting of removing phosphorus (P) and boron (B) by slag; a step of refining by unidirectional solidification consisting of removing metal impurities (Fe, Al, Ti, Mn, etc.) by means of unidirectional solidification; and a step of steam plasma-electromagnetism continuous refining consisting of charging a furnace with the unidirectionally solidified silicon and removing boron (B) by a steam plasma torch.

Method for producing silicon for solar cells by metallurgical refining process

Disclosed is a system for refining UMG Si including a vacuum chamber, a cold crucible disposed within the vacuum chamber, a device disposed within the vacuum chamber to supply Si to the cold crucible, a steam plasma torch disposed above the cold crucible to apply steam plasma formed by introducing a reactive gas into plasma flame by an inert gas to the Si supplied to the cold crucible, and an impurity collector disposed above the cold crucible within the vacuum chamber to collect impurity gas generated in the cold crucible and discharge the collected impurity gas to the outside of the vacuum chamber.

System for refining UMG Si using steam plasma torch

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Seoul, South Korea

Tae U Yu