Korea Hydro Nuclear Power Co., Ltd.

Hyun-Je Cho

Cheon-Woo Kim

Sang-Woon Shin

Young-Hwan Hwang

Sang-Woo Lee

Seok-Ju Hwang

Ji-Hoon Lee

Young-II Kim

Young-Il Kim

Seokju Hwang

A plasma torch has a torch body provided with a plurality of stacked torch body segments disposed between a rear electrode unit and a front electrode unit. The torch body forms a circular channel through which gas flows in an axial direction. Each torch body segment has a circular disc shape in which a central circular through-hole is formed to form the channel. Each segment includes gas supply ports defining a spiral-shaped flow path along the through hole on a first side of the segment so as to introduce a reactive gas, a cooling flow path, a cooling water supply flow path, a cooling water discharge flow path, a gas supply flow path, a gas branch flow path, a cooling water supply branch flow path, and a cooling water discharge branch flow path.

Plasma torch

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.

Method for decommissioning nuclear facilities

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.

Plasma torch with structure capable of performing reversed polarity/straight polarity operation

The present invention relates to a plasma furnace capable of separating and discharging different kinds of molten material, which comprises a furnace body; and a heating portionfor heating the lateral discharge gate, wherein the furnace body comprises a melt discharge portion formed through a lower portion of the melting chamberprovided for accommodating molten material; and at least two lateral discharge gatesprovided at different heights capable of discharging molten material.

Plasma furnace having lateral discharge gates

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 chamberfor accommodating a melt, an upper surface forming the upper portion of the melting chamberwith a horizontal upper surfaceand an inclined upper surfacehaving a slope with respect to the horizontal upper surface, a melt discharge portionformed through a bottom surface of the melting chamber for discharging molten material therethrough, and an input apparatushaving a slope for inputting waste into the melting chamber, and the mixed type plasma torchprovided on the inclined upper surfacewith a slope for generating melting heat in the melting chamber

Growing community of inventors

Daejeon, South Korea

Hyun-Je Cho