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公开(公告)号：US20210158982A1
公开(公告)日：2021-05-27
申请号：US17048317
申请日：2019-04-18
发明人： Seok-Ju HWANG , Hyun-Je CHO , Ji-Hoon LEE , Cheon-Woo KIM
摘要： A method for decommissioning a nuclear facility includes: separating a nuclear reactor pressure vessel from biodegradable concrete; decommissioning a concrete structure; covering the biodegradable concrete; and decommissioning the biodegradable concrete.
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公开(公告)号：US20180363982A1
公开(公告)日：2018-12-20
申请号：US15750278
申请日：2015-08-18
发明人： Hyun-Je CHO , Cheon-Woo KIM , Sang-Woo LEE , Sang-Woon SHIN
摘要： The present invention relates to a plasma furnace capable of separating and discharging different kinds of molten material, which comprises a furnace body 110; and a heating portion 140 for heating the lateral discharge gate 120, 130, wherein the furnace body comprises a melt discharge portion formed through a lower portion of the melting chamber 101 provided for accommodating molten material; and at least two lateral discharge gates 120, 130 provided at different heights capable of discharging molten material.
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公开(公告)号：US20180261347A1
公开(公告)日：2018-09-13
申请号：US15750272
申请日：2015-09-17
发明人： Hyun-Je CHO , Cheon-Woo KIM , Young-Il KIM , Young-Hwan HWANG , Sang-Woon SHIN
CPC分类号： G21F9/308 , F23G5/085 , F23G5/444 , F23G5/448 , F23G2209/18 , F27B3/045 , F27B17/00 , F27D3/003 , F27D3/14 , F27D11/08 , F27D2099/0031 , G21F9/30
摘要： The present invention relates to a plasma furnace which can efficiently treat various types of waste in large amounts. The plasma furnace comprises a melting chamber 101 for accommodating a melt, an upper surface forming the upper portion of the melting chamber 101 with a horizontal upper surface 111 and an inclined upper surface 112 having a slope with respect to the horizontal upper surface 111, a melt discharge portion 130 formed through a bottom surface of the melting chamber for discharging molten material therethrough, and an input apparatus 120 having a slope for inputting waste into the melting chamber 101, and the mixed type plasma torch 191, 192 provided on the inclined upper surface 112 with a slope for generating melting heat in the melting chamber 101.
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公开(公告)号：US20200314992A1
公开(公告)日：2020-10-01
申请号：US16765582
申请日：2018-10-31
发明人： Hyun-Je CHO , Cheon-Woo KIM , Sung-Hoon HONG , Mi-Hyun LEE
IPC分类号： H05H1/34
摘要： A plasma torch has a multi-electrode front electrode and a button-type rear electrode. The plasma torch allows initial discharge to be easily performed by using the button-type rear electrode and an auxiliary electrode for discharge. Initial ignition of a high-output arc plasma torch is performed easily by naturally forming an arc column between the rear electrode and the front electrode, even in the absence of efficient discharge between the rear electrode and the auxiliary electrode for initial discharge.
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5.发明申请公开(公告)号：US20180049303A1
公开(公告)日：2018-02-15
申请号：US15559588
申请日：2015-09-17
发明人： Sang-Woon SHIN , Cheon-Woo KIM , Hyun-Je CHO , Young-Hwan HWANG , Seokju HWANG
摘要： Disclosed is a plasma torch with a structure capable of performing reversed polarity/straight polarity operation, wherein the plasma torch is coupled to a melter and melts a waste material such as radioactive waste or industrial waste by generating and sustaining a plasma arc between electrodes, the plasma torch including: a rear electrode provided inside a torch pipe and electrically connected to become one of an anode and a cathode; and a front electrode provided at a front end of the torch pipe at a position adjacent to a front end of the rear electrode and electrically connected to become a remaining one of the anode and the cathode, wherein electrical connections of the rear and front electrodes are switchable with each other so that the plasma torch operates as a reversed polarity plasma torch or a straight polarity plasma torch.
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