KR20030060290A - rest throwing apparatus for solid radioactive waste - Google Patents
rest throwing apparatus for solid radioactive waste Download PDFInfo
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- KR20030060290A KR20030060290A KR1020020000918A KR20020000918A KR20030060290A KR 20030060290 A KR20030060290 A KR 20030060290A KR 1020020000918 A KR1020020000918 A KR 1020020000918A KR 20020000918 A KR20020000918 A KR 20020000918A KR 20030060290 A KR20030060290 A KR 20030060290A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
본 발명은 고무주름관 및 압력분산튜브를 이용하여 기밀성을 유지하여 방사성 폐기물의 투입과정 중에 발생할 수 있는 2차 오염을 방지하고 주변 압력기류에 의한 계량호퍼의 영향을 최소화하며, 수직 스크류에 의해 폐기물이 원할하게 가열로 내로 투입될 수 있도록 하는 고체 방사성폐기물 정량투입장치에 관한 것이다.The present invention maintains airtightness by using a rubber pleated tube and a pressure distribution tube to prevent secondary contamination that may occur during the input of radioactive waste and to minimize the influence of the metering hopper due to the ambient pressure airflow, and waste by the vertical screw It relates to a solid radioactive waste metering device that can be smoothly introduced into the furnace.
Description
본 발명은 고체 방사성폐기물 정량투입장치에 관한 것으로서, 더 자세하게는 고무주름관 및 압력분산튜브를 이용하여 기밀성을 유지하여 방사성 페기물의 투입과정 중에 발생할 수 있는 2차 오염을 방지하고 주변 압력기류에 의한 계량호퍼의 영향을 최소화하며, 수직 스크류에 의해 폐기물이 원할하게 가열로 내로 투입될 수 있도록 하는 고체 방사성폐기물 정량투입장치에 관한 것이다.The present invention relates to a device for quantitative input of a solid radioactive waste, and more particularly, to maintain airtightness by using a rubber pleating tube and a pressure dispersing tube to prevent secondary contamination that may occur during the process of adding radioactive waste and to measure by ambient pressure airflow. The present invention relates to a solid radioactive waste dosing device which minimizes the influence of the hopper and allows waste to be smoothly introduced into the furnace by a vertical screw.
일반 산업폐기물의 소각이나 용융, 열분해 처리의 경우와 달리 방사성 폐기물을 공급하는 경우에는 공급도중 발생되는 분진등에 의한 주변의 방사능 오염이 없도록, 공급장치와 연소장치가 모두 기밀이 유지되도록 설계되어야 한다. 또한 최종처리된 소각물 또는 용융물의 방사능 준위를 조절하기 위하여 가열로 내로 투입력을 정확하게 계량할 필요가 있다. 이를 위하여 계량호퍼 하부에 무게 측정소자(load cell)을 이용한 전자저울을 설치하고, 미분적분비례 제어(PID control: proportional integral differntial control)조절시스템을 적용하여 폐기물의 투입량을 1% 오차이내로 정확하게 조절한다.Unlike incineration, melting, or pyrolysis treatment of general industrial wastes, the supply of radioactive wastes should be designed so that both the supply and the combustion apparatus are kept airtight so that there is no radioactive contamination caused by dust generated during the supply. It is also necessary to accurately meter the input force into the furnace in order to control the radioactivity of the finished incineration or melt. To this end, an electronic scale using a load cell is installed at the bottom of the weighing hopper, and a PID control (proportional integral differntial control) control system is applied to precisely control the amount of waste input within 1%. .
폐기물의 소작 또는 용융을 돕기 위해 가열로 내에 공급되는 산소나 공기 등의 공급 또는 필터 표면의 분진제거를 위한 탈진 설비에 의해 압력 기류가 형성될 수 있다, 이러한 압력기류는 미세한 하중에도 반응하는 전자 저울의 투입량 조절에 영향을 주어 튜입율이 불규칙하도록 작용하는 문제점을 가지고 있다.Pressure airflow can be formed by a supply of oxygen or air, etc., supplied to the furnace to assist in the cauterization or melting of the waste, or by a dedusting facility for dedusting the filter surface. There is a problem in that the input ratio is irregular because it affects the dose adjustment of the.
본 발명은 이와 같은 종래의 제반 문제점을 해결하기 위한 것으로서 그 목적은 기밀성을 유지하되 압력분산수단을 장착하여 가열로 및 고온세라믹필터의 공기분사탈진기등의 압력기류로 인해 계량호퍼가 영향을 받아 불규칙한 폐기물 투입으로 인한 영향을 최소화하는 데 있다.The present invention is to solve such a conventional problem, the purpose is to maintain the airtightness, but the pressure hopper is affected by the pressure air flow, such as air blowing dust removal of the heating furnace and high-temperature ceramic filter by mounting pressure distribution means irregular To minimize the impact of waste input.
또한 본 발명의 또 다른 목적은 가열로 내 부압의 급격한 변화로 인하여 폐기물이 가열로 내로 빨려 들어가거나 저장호퍼 및 계량호퍼 내에 불길에 닿지 않도록 안전성을 고려 하는 데 있다.In addition, another object of the present invention is to consider safety so that waste is not sucked into the furnace due to a sudden change in the negative pressure in the furnace, or touch the flame in the storage hopper and the metering hopper.
또한, 본 발명의 또 다른 목적은 계량호퍼 아래에 설치된 수직스크류와 수직튜브를 통해 전달되는 폐기물이 가열로에 일정한 수량으로 균일하게 공급될 수 있도록 하는 데 있다.In addition, another object of the present invention is to ensure that the waste delivered through the vertical screw and the vertical tube installed under the metering hopper can be uniformly supplied to the heating furnace in a certain quantity.
1;저장호퍼2;계량호퍼1; storage hopper 2; weighing hopper
3;수직튜브4;압력분산튜브3; vertical tube 4; pressure distribution tube
5;안전밸브6;고무주름관5; safety valve 6; rubber pleated pipe
7;수직스크류8;질소공급기7; vertical screw 8; nitrogen feeder
9;가열로10;버블로9; furnace 10; bubble
11;고온세라믹필터12;공기분사탈진기11; high temperature ceramic filter 12; air spray deduster
13;체크밸브13; check valve
이하, 이 발명이 속하는 기술분야에서 통상의 지식을 갖는 자가 이 발명을 용이하게 실시할 수 있을 정도로 상세히 설명하기 위하여, 이 발명의 가장 바람직한 실시예를 첨부된 도면을 참조로 하여 상세히 설명하기로 한다. 이 발명의 목적, 작용효과를 포함하여 기타 다른 목적들, 특징점들, 그리고 동작상의 이점들이 바람직한 실시예의 설명에 의해 보다 명확해질 것이다.DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. . Other objects, features, and operational advantages, including the purpose, working effects, and the like of the present invention will become more apparent from the description of the preferred embodiment.
참고로 여기에서 개시되는 실시예는 여러가지 실시가능한 예중에서 당업자의 이해를 돕기 위하여 가장 바람직한 예를 선정하여 제시한 것일 뿐, 이 발명의 기술적 사상이 반드시 이 실시예만 의해서 한정되거나 제한되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위내에서 다양한 변화와 변경이 가능함은 물론, 균등한 타의 실시예가 가능함을 밝혀 둔다.For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only by this embodiment, Various changes and modifications are possible within the scope without departing from the technical spirit of the present invention, as well as other equivalent embodiments will be found.
본 발명은 고체방사성폐기물 유리고화설비의 정량 투입장치에 관한 것으로서, 첨부도면 도 1에 도시된 바와 같이 폐기물을 담아 두는 저장호퍼(1)와, 상기 저장호퍼(1)에 저장된 페기물을 공급받아 일정량의 폐기물량을 측정하는 계량호퍼(4)와, 상기 계량호퍼(4)에 일정량의 폐기물을 공급받아 용융하거나 소각하기 위한 가열로(9)와, 상기 가열로(9)에서 폐기물이 연소되면서 발생하는 분진을 포집하는 고온세라믹필터(11)와, 상기 고온세라믹필터(11) 표면의 분진을 털어내는공기분사탈진기(12)가 연결되는 구성을 갖는다.The present invention relates to a quantitative input device for a solid radioactive waste glass solidification facility, as shown in FIG. 1, a storage hopper 1 containing waste and wastes stored in the storage hopper 1. Weighing hopper (4) for measuring the amount of waste of the waste, a heating furnace (9) for melting or incineration by receiving a certain amount of waste to the metering hopper (4), the waste is generated by the combustion in the furnace (9) The high temperature ceramic filter 11 for collecting the dust and the air spray deduster 12 to shake off the dust on the surface of the high temperature ceramic filter 11 are connected.
상기 저장호퍼(1)는 가연성 잡고체 또는 이온교환수지등의 폐기물을 담아 저장할 수 있도록 내부에 일정한 공간이 형성되어 있다.The storage hopper 1 has a predetermined space formed therein to store and store the waste, such as flammable holding body or ion exchange resin.
상기 저장호퍼(1)는 폐기물의 안전한 유출과 외부의 불길 유입을 차단하기 위해 안전수단과, 가열로(9)에 폐기물이 원할하게 공급될 수 잇도록 회전동력을 이용하여 공급하는 폐기물공급수단이 연결되어 있다.The storage hopper (1) is a safety means for preventing the safe outflow of waste and inflow of external flames, and waste supply means for supplying using a rotating power so that the waste can be supplied to the heating furnace (9) smoothly It is connected.
상기 안전수단은 폐기물이 공급이 이루어질때 열리게 되고 그 외에는 닫힘으로써 부압으로 유지되는 가열로(9)의 압력이 급감할때 가열로(9)내로 불필요한 폐기물의 유입타단을 위한 안전밸브(2)와, 상기 안전밸브(2)로부터 배출되는 폐기물이 이송시 진동으로 인한 전자저울에의 영향을 최소화하도록 하는 고무재질의 주름관(3)이 연결되어 있다.The safety means is a safety valve (2) for the other end of the unnecessary waste flow into the heating furnace (9) when the pressure of the heating furnace (9) which is opened when the waste is supplied and closed elsewhere, the pressure of the heating furnace (9) is maintained at negative pressure The corrugated pipe 3 of rubber material is connected to minimize the influence of the waste discharged from the safety valve 2 on the electronic balance due to vibration during transportation.
상기 안전수단은 부압으로 유지되는 가열로(9)의 압력이 급증할때 가열로(9) 내의 불길이 역류하는 것을 차단할 수 있도록 계량호퍼(2)에 질소공급기(8)가 연결되는 구성을 갖는다.The safety means has a configuration in which the nitrogen supply 8 is connected to the metering hopper 2 so that the flame in the furnace 9 can be prevented from flowing back when the pressure of the furnace 9 maintained at a negative pressure increases rapidly. .
또한, 상기 안전수단은 가열로(9)에서부터 저장호퍼(1)까지 연결되어 가열로(9)에서부터 가해지는 압력이 저장호퍼(1)로 분산되면서 감압될 수 있도록 압력분산튜브(5)가 연결되며, 압력기류가 일방향으로만 흐를 수 있도록 체크밸브(13)가 연결되어 있다.In addition, the safety means is connected to the storage hopper (1) from the heating furnace (9) is connected to the pressure distribution tube (5) so that the pressure applied from the heating furnace (9) can be decompressed to the storage hopper (1) The check valve 13 is connected so that the pressure air flows only in one direction.
폐기물공급수단은 계량호퍼(4)에서부터 가열로(9)까지의 페기물 흐름의 상태가 원할하게 이루어질 수 있도록 구동모터(미도시)의 회전동력에 의해 회전하도록내측에 수직스크류(7)가 장착된 수직튜브(8)가 연결되어 있다.The waste supply means has a vertical screw 7 mounted therein to rotate by rotational power of a driving motor (not shown) so that the state of waste flow from the metering hopper 4 to the heating furnace 9 can be smoothly made. The vertical tube 8 is connected.
상기한 공기분사탈진기(12)는 필터 표면에 붙어 있는 분진을 제거할 수 있도록 가열로(9)와 연결되는 부위의 일정부위에 고온세라믹필터(11)가 연결되는 구성을 갖는다.The air spray deduster 12 has a configuration in which the high temperature ceramic filter 11 is connected to a predetermined portion of a portion connected to the heating furnace 9 so as to remove dust adhering to the filter surface.
이와 같이 구성하는 본 발명의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effects of the present invention configured in this way in detail as follows.
본 발명은 고체방사성폐기물 유리고화설비의 정량 투입장치에 관한 것으로서, 첨부도면 도 1에 도시된 바와 같이 폐기물이 저장된 저장호퍼(1)에서 계량호퍼(2)로 폐기물을 유출시키고 이어 폐기물을 가열로(9)에서 융용시킨 후 공기분사탈진기(12)를 통해 분진을 제거하게 되는 것이다.The present invention relates to a quantitative input device for a solid radioactive waste glass solidification plant, as shown in Figure 1, the waste is discharged from the storage hopper (1) in which the waste is stored to the metering hopper (2) and then the waste is heated to a furnace After melting in (9) is to remove the dust through the air spray dedusting machine (12).
본 발명은 방사성 폐기물의 공급에 따른 분진 등의 발생으로 인한 2차 오염방지를 위해 폐기물을 전달하는 각 공급장치를 전체적으로 밀폐시키고 있다.The present invention is to seal the entire supply device for delivering the waste to prevent secondary pollution due to the generation of dust and the like according to the supply of radioactive waste.
특히 계량호퍼(2)는 무게측정소자틀 이용하는 정밀측정장비인 전자거울을 포함하므로 외부의 사소한 충격에도 영향을 받는다.In particular, the metering hopper (2) includes an electronic mirror, which is a precision measuring device using a weighing device, so it is also affected by a slight external shock.
이 때문에 폐기물의 이송시에 저울로의 영향이 없도록 저장호퍼(1)와 계량호퍼(2), 계량호퍼(2)와 수직튜브(8)사이에는 고무재질의 주름관(6)이 연결되어 있다.For this reason, the corrugated pipe 6 of rubber material is connected between the storage hopper 1, the measuring hopper 2, the measuring hopper 2, and the vertical tube 8 so that there is no influence on the scale at the time of conveying waste.
통풍구가 따로 없는 상태에서 가열로(9) 또는 공기분사탈진기(12)는 고온세라믹필터(11)로부터 유입되는 압력기류에 의한 계량호퍼(2)의 영향을 최소화하기 위하여 수직튜브(3)의 질소공급기(8) 맞은 편의 압력분산튜브(4)가 생성된 압력기류를 저장호퍼(1)로 배출시키게 되므로 여유공간이 있는 저장호퍼(1)는 일종의 팽창탱크(expansion tank) 역할을 하면서 감압하게 된다.In the absence of a vent, the heating furnace 9 or the air-jet deduster 12 is a nitrogen of the vertical tube 3 in order to minimize the influence of the metering hopper 2 by the pressure air flowing from the high temperature ceramic filter 11. Since the pressure distribution tube 4 opposite the feeder 8 discharges the generated pressure air to the storage hopper 1, the storage hopper 1 having a free space acts as a kind of expansion tank to reduce the pressure. .
또한, 가열로(9) 및 후처리장치는 방사성 물질을 다루는 특성상 오염확산을 방지하기 위하여 계통내부를 부압(negative pressure)으로 유지된다. 부압상태에서 운전 중 필터계통 등이 막혀 가열로(9) 내부 부압이 급속히 내려가는 비상상황이 될 경우 저장호퍼(1) 및 계량호퍼(2) 내의 폐기물이 부압에 의해 가열로(9) 내로 보다 많은 양이 투입될 수 있다.In addition, the furnace 9 and the aftertreatment device are maintained at a negative pressure inside the system in order to prevent the spread of contamination due to the handling of radioactive material. When the filter system is clogged during operation under a negative pressure and the emergency pressure inside the furnace 9 rapidly decreases, the waste in the storage hopper 1 and the metering hopper 2 is caused to enter the furnace 9 due to the negative pressure. Amount can be committed.
반대로 부압을 유지하는 배기팬 계통 등의 이상으로 가열로(9) 내부가 양압으로 유지될 경우에는 내부 불길이 호퍼 내로 치솟아 폐기물을 태워버릴 수 있게 되는데, 이러한 상황을 방지하기 위하여 안전밸브(5) 및 질소공급기(8)는 폐기물의 가열로(9)내로의 불필요한 튜입 및 가열로(9) 내 불길을 차단시켜 안전사고를 방지하게 된다.On the contrary, when the inside of the furnace 9 is maintained at a positive pressure due to an abnormality of the exhaust fan system that maintains the negative pressure, the internal flames may soar into the hopper and burn the waste. ) And the nitrogen supply (8) to prevent unnecessary accidents by blocking unnecessary pipes into the furnace (9) and the flame in the furnace (9).
또한 압력분산튜브(5)는 계통내부의 부압변동으로 인하여 튜브를 통한 폐기물의 가열로(9) 내 유입이나 불길의 역류를 방지하기 위하여 체크밸브(13)를 설치하고 일정 중간부위를 나선형으로 비틀며 질소공급기(8)를 통한 질소의 분사로 압력분산튜브(4)를 통한 불필요한 폐기물의 유입이나 불길의 역류를 방지하게 된다.In addition, the pressure distribution tube (5) installs a check valve (13) and twists a certain intermediate portion in a spiral manner to prevent inflow of waste into the heating furnace (9) or backflow of the flame through the tube due to negative pressure fluctuations in the system. The injection of nitrogen through the nitrogen supplier 8 prevents unnecessary waste flow or backflow of the flame through the pressure distribution tube 4.
또한, 계량호퍼(2)는 통과한 폐기물이 수직 튜브(3)에서 가열로(9) 상부까지 뻗어 있는 수직스크류(7)의 주변 벽면에 달라 붙거나 뭉쳐서 떨어지지 않고 가열로(9) 내부에 원할하게 투입 되도록 수직스크류(7)가 구동모터에 의해 회전하게 되면서 내부의 스크류를 따라 폐기물이 하강하게 된다.In addition, the metering hopper (2) is desired to be stored inside the furnace (9) without passing waste from sticking or agglomeration to the peripheral wall of the vertical screw (7) extending from the vertical tube (3) to the upper portion of the furnace (9). The vertical screw 7 is rotated by the drive motor so that the waste is lowered along the inner screw.
따라서, 계량호퍼(2)와 저장호퍼(1)는 다른 종류의 폐기물이 동시에 투입되더라도 원할하게 폐기물을 가열로(9)까지 공급하게 되는 것이다.Therefore, the metering hopper 2 and the storage hopper 1 will smoothly supply the waste to the heating furnace 9 even if different kinds of waste are introduced at the same time.
이와 같이 작용하는 본 발명은 고무주름관 및 압력분산튜브를 이용하여 기밀성을 유지함으로서 방사성 페기물의 투입과정 중에 발생할 수 있는 2차 오염을 방지하고 주변 압력기류에 의해 계량호퍼의 영향을 최소함으로서 일정한 튜입율을 유지할 수 있으며 이러한 안정된 튜입율은 좋은 연소상태의 중요조건으로서 일산화탄소등의 생성을 줄이며, 가열로 및 후처리장치의 안정적인 운전(온도,압력등)에 도움이 될 뿐아니라 튜입한 폐기물의 정확한 계량을 할 수 있는 잇점이 있다.The present invention acting as described above maintains airtightness by using a rubber pleated tube and a pressure dispersing tube to prevent secondary contamination that may occur during the input of radioactive waste and to minimize the influence of the metering hopper by the ambient pressure airflow. This stable pumping rate reduces the production of carbon monoxide as an important condition of good combustion conditions, and helps the stable operation (temperature, pressure, etc.) of the furnace and aftertreatment equipment, as well as accurate metering of the injected waste. There is an advantage to doing this.
또한 본 발명은 안전밸브와 나선형 압력분산튜브 및 질소공급기를 통해 안전한 설비운영을 할 수 있으며, 또한 수직 스크류를 설치하여 파쇄된 폐기물이 서로 엉키지 않고 고르게 가열로 내로 투입될 수 있는 효과를 갖는다.In addition, the present invention can be safely operated through the safety valve and spiral pressure distribution tube and nitrogen supply, and also has the effect that the waste crushed by installing a vertical screw can be introduced into the furnace evenly without tangling each other.
Claims (7)
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| JPS62123399A (en) * | 1985-11-22 | 1987-06-04 | 日本碍子株式会社 | Method and device for melting and solidifying radioactive waste liquor |
| FR2659877B1 (en) * | 1990-03-23 | 1992-11-27 | Tanari Rene | PROCESS AND OVEN FOR TREATING INCINERABLE WASTE. |
| JPH04290999A (en) * | 1991-03-19 | 1992-10-15 | Ngk Insulators Ltd | Radioactive waste disposing method |
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