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KR-20260063564-A - Dust Removal System for Melting Furnace Exhaust Gas

KR20260063564AKR 20260063564 AKR20260063564 AKR 20260063564AKR-20260063564-A

Abstract

The present invention relates to a dust treatment system for exhaust gas discharged from a melting furnace, comprising: a discharge pipe for discharging the exhaust gas discharged from the melting furnace; and a dust removal unit comprising a screw moving within the discharge pipe and removing dust accumulated inside the discharge pipe.

Inventors

  • 김득만
  • 윤지수
  • 정정수

Assignees

  • 한국수력원자력 주식회사

Dates

Publication Date
20260507
Application Date
20241030

Claims (10)

  1. In a system for treating dust in exhaust gas discharged from a melting furnace, A discharge pipe for discharging exhaust gas discharged from the above-mentioned melting furnace; and A dust treatment system for exhaust gas comprising: a dust removal unit that removes dust accumulated inside the exhaust pipe, including a screw that moves within the exhaust pipe.
  2. In paragraph 1, The above discharge pipe is, A second part extending long in the first direction; A first part connecting one end of the second part and the melting furnace; and A dust treatment system in exhaust gas comprising a third part connected to the other end of the second part above.
  3. In paragraph 2, The above first direction is a horizontal direction, and The first part above is a dust treatment system in exhaust gas that is bent downward toward the melting furnace.
  4. In paragraph 2, The above third part is, A first sub-part extending in the first direction from the second part above; A second sub-part extended upward from the first sub-part above; and It includes a third sub-part extending downward from the first sub-part above, and A dust treatment system for exhaust gas in which the exhaust gas is discharged to the outside through the above second sub-part.
  5. In paragraph 2, The above screw is, A dust treatment system in exhaust gas that reciprocates along the first direction in at least a portion of the third part and the second part.
  6. In paragraph 5, The above screw is, A dust treatment system in exhaust gas that introduces dust accumulated in the second part into the melting furnace when moving in a first movement direction toward the first part.
  7. In paragraph 6, The above screw is, A dust treatment system for exhaust gas that moves dust accumulated by the rear end of the screw to the third sub-part by gravity when moving in a second movement direction opposite to the first movement direction.
  8. In paragraph 5, The above screw is a dust treatment system in exhaust gas located at the second moving direction end of the first sub-part when not in operation.
  9. In paragraph 5, The above screw is, The vertical cross-section in the extension direction of the second part is formed in a shape corresponding to the cross-section of the second part, and A plurality of through holes are formed along the extension direction of the second part above, and A dust treatment system in exhaust gas having an outer diameter of 95 to 99% of the inner diameter of the second part.
  10. In paragraph 5, The dust removal unit above is, A motor that operates the above screw; and A dust treatment system in exhaust gas further comprising a support connecting the motor and the screw and enabling the reciprocating movement of the screw.

Description

Dust Removal System for Melting Furnace Exhaust Gas The present invention relates to a system for treating dust in exhaust gas discharged from a melting furnace. During the operation of nuclear facilities, low- and intermediate-level radioactive waste contaminated with radioactive materials, such as work clothes and shoes, is generated, and the safe and efficient disposal of such waste is essential. Vitrification technology is a technique that melts low- and intermediate-level radioactive waste at high temperatures to form a glass-like solid, offering advantages such as reduced waste volume, lower disposal costs, and prevention of radioactive material leakage. However, exhaust gases are generated during the vitrification process, and dust within these gases accumulates inside the pipes, causing blockages and reducing exhaust gas treatment efficiency. Furthermore, the accumulation of dust within the pipes leads to increased internal pressure, hindering the stable operation of the system. FIG. 1 shows a system for treating dust in exhaust gas discharged from a melting furnace according to an embodiment of the present invention, and FIG. 2 shows a screw of a system for treating dust in exhaust gas discharged from a melting furnace according to an embodiment of the present invention, and FIGS. 3 and 4 illustrate the operation of a system for treating dust in exhaust gas discharged from a melting furnace according to an embodiment of the present invention. The present invention will be described in more detail below with reference to the drawings. The attached drawings are merely examples illustrated to further explain the technical concept of the present invention, and therefore the concept of the present invention is not limited to the attached drawings. Additionally, the sizes and spacing, etc., in the attached drawings may be exaggerated from reality to explain the relationships between the components. Referring to FIGS. 1 and 2, a system for treating dust in exhaust gas discharged from a melting furnace according to an embodiment of the present invention (hereinafter referred to as the “dust treatment system”) will be described. FIG. 1 shows a system for treating dust in exhaust gas discharged from a melting furnace according to an embodiment of the present invention, and FIG. 2 shows a screw of a system for treating dust in exhaust gas discharged from a melting furnace according to an embodiment of the present invention. A dust treatment system (10) according to one embodiment of the present invention treats dust in exhaust gas emitted when treating low- and intermediate-level radioactive waste in a melting furnace within a vitrification facility operated at a high temperature, and includes an exhaust pipe (100) and a dust removal unit (200). Referring to FIG. 1, the melting furnace is shown in a combined form of an upper chamber and a lower chamber, but is not limited thereto. The discharge pipe (100) includes a first part (110), a second part (120) and a third part (130), and The first part (110) is a part that connects one end of the second part (120) to the melting furnace, and is installed by bending downward toward the melting furnace. Referring to FIG. 1, the first part (110) is connected to the upper chamber of the melting furnace, and exhaust gas generated in the melting furnace is discharged through the first part (110). The second part (120) is extended in the first direction, where the first direction means the horizontal direction. The third part (130) is connected to the other end of the second part (120) and includes a first sub-part (131), a second sub-part (132), and a third sub-part (133). The first sub-part (131) is extended in the first direction from the second part (120). The second sub-part (132) is an upward extension from the first sub-part (131), through which exhaust gas discharged from the melting furnace is discharged to the outside. Here, the upward extension is a vertical extension in the direction of exhaust gas discharged to the outside from the first sub-part (131). In one embodiment of the present invention, the end of the first sub-part (131) is shown as being vertical, but is not limited thereto. In other embodiments, the end of the first sub-part (131) may be curved. The third sub-part (133) is a downward extension from the first sub-part (131) and stores dust accumulated by the movement of the screw (210) within the dust removal unit (200), which will be described later, to the first sub-part (131). Here, the downward extension is of the first sub-part (131). In one embodiment of the present invention, a hopper capable of storing dust accumulated by the movement of the screw (210) may be installed in the third sub-part (133), but is not limited thereto. Additionally, the third sub-part (133) may be used to check the amount of dust in real time after processing through the dust processing system (10). Referring to FIGS. 1 and FIGS. 2, a dust removal unit (200) in a dus