KR102271667B1 - EDTA-metal compound waste water processing apparatus - Google Patents

EDTA-metal compound waste water processing apparatus Download PDF

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KR102271667B1
KR102271667B1 KR1020210004167A KR20210004167A KR102271667B1 KR 102271667 B1 KR102271667 B1 KR 102271667B1 KR 1020210004167 A KR1020210004167 A KR 1020210004167A KR 20210004167 A KR20210004167 A KR 20210004167A KR 102271667 B1 KR102271667 B1 KR 102271667B1
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chemical cleaning
cleaning wastewater
edta
supercritical water
edta chemical
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KR1020210004167A
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Korean (ko)
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김기련
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주식회사 베스텍엔터프라이즈
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation

Abstract

The present invention relates to an EDTA chemical cleaning wastewater treatment device having a new structure which can effectively and environmentally treat EDTA chemical cleaning wastewater generated when a steam generator of a nuclear power plant is cleaned by a chemical method. The EDTA chemical cleaning wastewater treatment device, according to an embodiment of the present invention, heats and pressurizes EDTA chemical cleaning wastewater at high temperature and high pressure so that EDTA chemical cleaning wastewater is converted to a supercritical water state to remove metal components contained in EDTA chemical cleaning wastewater. After the EDTA chemical cleaning wastewater in supercritical water state is gasified, and the gasification is promoted in the atmosphere of the catalyst (43c), the organic components contained in the EDTA chemical cleaning wastewater are decomposed into by-product gas, and the liquid and gas are separated. Accordingly, clean treated water from which contaminants are removed is obtained. Therefore, EDTA chemical cleaning wastewater contaminated with metal components and organic components can be effectively purified and treated in an environmentally friendly manner so that pollutants such as dioxins are not generated.

Description

EDTA화학세정폐수 처리장치{EDTA-metal compound waste water processing apparatus}EDTA chemical cleaning waste water processing apparatus {EDTA-metal compound waste water processing apparatus}

본 발명은 원자력발전소의 증기발생기를 화학적인 방법으로 청소할 때 발생되는 EDTA화학세정폐수를 효과적이면서 친환경적으로 처리할 수 있도록 된 새로운 구조의 EDTA화학세정폐수 처리장치에 관한 것이다.The present invention relates to an EDTA chemical cleaning wastewater treatment device having a new structure that can effectively and environmentally treat EDTA chemical cleaning wastewater generated when a steam generator of a nuclear power plant is cleaned by a chemical method.

일반적으로 원자력발전소의 증기발생기는 장시간 가동할 경우, 금속산화물 스케일이 발생되어, 열효율이 저하된다.In general, when the steam generator of a nuclear power plant is operated for a long time, metal oxide scale is generated, and thermal efficiency is lowered.

따라서, 이러한 증기발생기는 일정한 주기로 화학세정을 하여 금속산화물 스케일을 제거함으로써, 열효율을 유지하도록 하고 있다.Therefore, these steam generators are chemically cleaned at regular intervals to remove metal oxide scale, thereby maintaining thermal efficiency.

한편, 이와 같이 증기발생기를 화학세정 하는 방법은, EDTA((ethylene diamine tetra acetic acid)용액을 투입하여 실시되는데, Fe2O4 + 8H+ + 3EDTA -> 2Fe(Ⅲ)EDTA + Fe(Ⅱ)EDTA + 4H2O(1)의 반응이 발생되어, 열교환기의 외벽에 발생된 금속산화물과 킬레이트를 제거하게 된다.On the other hand, this method of chemically cleaning the steam generator is carried out by adding EDTA ((ethylene diamine tetra acetic acid) solution, Fe2O4 + 8H+ + 3EDTA -> 2Fe(III)EDTA + Fe(II)EDTA + 4H2O( The reaction of 1) occurs to remove the metal oxide and chelate generated on the outer wall of the heat exchanger.

한편, 이러한 EDTA용액에는 세정능력을 높이기 위하여 환원제인 하이드라진(N2H4)과 중화제인 암모니아수(NH4OH)가 첨가되므로, 증기발생기를 세정할 때 발생되는 EDTA화학세정폐수는 무기물질과 유기물질이 혼합된 복잡한 성상의 난분해성 폐수가 된다.On the other hand, since hydrazine (N2H4) as a reducing agent and ammonia water (NH4OH) as a neutralizing agent are added to this EDTA solution to increase cleaning ability, the EDTA chemical cleaning wastewater generated when cleaning the steam generator is a complex mixture of inorganic and organic materials. It becomes a recalcitrant wastewater in nature.

따라서, 종래에는 이러한 EDTA화학세정폐수를 고주파유도를 이용한 소각방법이나 플라즈마소각방법을 이용하여 소각하여 처리하고 있으나, 이러한 경우, 다량의 다이옥신이 발생되는 문제점이 있었다.Therefore, conventionally, such EDTA chemical cleaning wastewater is incinerated and treated using an incineration method using high frequency induction or a plasma incineration method, but in this case, there is a problem in that a large amount of dioxin is generated.

따라서, 이러한 문제점을 해결할 수 있는 새로운 방법이 필요하게 되었다.Therefore, there is a need for a new method to solve these problems.

등록특허 10-0729039호,Registered Patent No. 10-0729039,

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 원자력발전소의 증기발생기를 화학적인 방법으로 청소할 때 발생되는 EDTA화학세정폐수를 효과적이면서 친환경적으로 처리할 수 있도록 된 새로운 구조의 EDTA화학세정폐수 처리장치를 제공함에 그 목적이 있다.In order to solve the above problems, the present invention provides an EDTA chemical cleaning wastewater treatment device of a new structure that can effectively and eco-friendlyly treat EDTA chemical cleaning wastewater generated when a steam generator of a nuclear power plant is cleaned by a chemical method. The purpose is to provide.

상기한 목적을 달성하기 위한 본 발명은, EDTA화학세정폐수가 저장되는 폐수저장탱크(10)와, 공급관(21)을 통해 상기 폐수저장탱크(10)에 연결되어 공급관(21)을 통해 공급된 EDTA화학세정폐수에 포함된 금속성분을 제거하는 초임계수전처리장치(20)와, 상기 공급관(21)에 구비되어 폐수저장탱크(10)에 저장된 EDTA화학세정폐수를 가압하여 상기 초임계수전처리장치(20)로 공급하는 고압슬러리펌프(30)와, 연결관(41)을 통해 상기 초임계수전처리장치(20)에 연결되며 상기 초임계수전처리장치(20)에서 1차 처리된 EDTA화학세정폐수에 포함된 유기성분을 무해한 가스성분으로 분해하는 촉매가스화반응장치(40)와, 배출관(51)을 통해 상기 촉매가스화반응장치(40)에 연결되며 촉매가스화반응장치(40)에서 배출된 EDTA화학세정폐수를 가스성분과 액체성분으로 분리하는 기액분리기(50)를 포함하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치가 제공된다.The present invention for achieving the above object is a wastewater storage tank 10 in which EDTA chemical cleaning wastewater is stored, and connected to the wastewater storage tank 10 through a supply pipe 21 and supplied through a supply pipe 21 The supercritical water pretreatment device 20 for removing metal components contained in EDTA chemical cleaning wastewater, and the supercritical water pretreatment device by pressurizing the EDTA chemical cleaning wastewater provided in the supply pipe 21 and stored in the wastewater storage tank 10 ( It is connected to the supercritical water pretreatment device 20 through the high pressure slurry pump 30 supplied to 20) and the connection pipe 41, and is included in the EDTA chemical cleaning wastewater primarily treated in the supercritical water pretreatment device 20 EDTA chemical cleaning wastewater discharged from the catalytic gasification reactor 40 connected to the catalytic gasification reactor 40 through a catalytic gasification reactor 40 that decomposes the organic components into harmless gas components and a discharge pipe 51 There is provided an EDTA chemical cleaning wastewater treatment apparatus comprising a gas-liquid separator 50 for separating the gas into a gas component and a liquid component.

본 발명의 다른 특징에 따르면, 상기 초임계수전처리반응장치(20)는 상하방향으로 상측에는 배기구(22a)가 형성된 외부케이스(22)와, 상기 외부케이스(22)의 내부에 상하방향으로 연장되도록 구비되며 내부에는 상하방향으로 연장된 유로(23b)가 형성된 초임계수전처리반응기(23)와, 상기 외부케이스(22)의 하부 일측에 구비되며 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수를 가열하여 EDTA화학세정폐수를 초임계수 상태로 변환시키는 제1 가스버너(24)와, 상기 초임계수전처리반응기(23)에 연결되어 EDTA화학세정폐수에서 분리된 금속성분을 수집하는 침전탱크(25)를 포함하고, 상기 초임계수전처리반응기(23)는 상하방향으로 연장되며 내부에 상기 유로(23b)가 형성되며 상단 일측에는 상기 공급관(21)이 연결되는 공급공(23e)이 형성되고 하단 일측에는 상기 연결관(41)이 연결되는 배출공(23f)이 형성된 반응기본체(23a)와, 상기 유로(23b)의 내부 하측에 구비되어 유로(23b)의 내부에서 초임계수 상태로 변화된 EDTA화학세정폐수에 포함된 금속성분을 걸러내는 금속스크린메쉬부재(23c)를 포함하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치가 제공된다.According to another feature of the present invention, the supercritical water pretreatment reaction device 20 includes an outer case 22 having an exhaust port 22a formed on the upper side in the vertical direction, and extending in the vertical direction inside the outer case 22 . The supercritical water pretreatment reactor 23 provided with a flow path 23b extending in the vertical direction therein, and EDTA provided at the lower side of the outer case 22 and supplied to the inside of the supercritical water pretreatment reactor 23 The first gas burner 24 for heating the chemical cleaning wastewater to convert the EDTA chemical cleaning wastewater into a supercritical water state, and the supercritical water pretreatment reactor 23 are connected to the precipitation to collect the metal components separated from the EDTA chemical cleaning wastewater Including a tank 25, the supercritical water pretreatment reactor 23 extends in the vertical direction, the flow path 23b is formed therein, and a supply hole 23e to which the supply pipe 21 is connected is formed at one upper end. and a reaction main body 23a having a discharge hole 23f to which the connection pipe 41 is connected is formed on one side of the lower end, and provided at an inner lower side of the flow path 23b to change to a supercritical water state inside the flow path 23b EDTA chemical cleaning wastewater treatment apparatus is provided, characterized in that it comprises a metal screen mesh member (23c) for filtering the metal components contained in the EDTA chemical cleaning wastewater.

본 발명의 또 다른 특징에 따르면, 상기 촉매가스화반응장치(40)는 상하방향으로 상측에는 배기구(42a)가 형성된 외부케이스(42)와, 상기 외부케이스(42)의 내부에 상하방향으로 연장되도록 구비되며 내부에는 상하방향으로 연장된 유로(43b)가 형성된 촉매가스화반응기(43)와, 상기 외부케이스(42)의 하부 일측에 구비되며 상기 촉매가스화반응기(43)의 내부로 공급된 EDTA화학세정폐수의 초임계수를 가스화가 되도록 2차 가열하는 제2 가스버너(44)를 포함하고, 상기 촉매가스화반응기(43)는 상하방향으로 연장되며 내부에 상기 유로(43b)가 형성되며 일측에는 상기 연결관(41)이 연결되는 공급공(43d)이 형성되고 타측에는 상기 배출관(51)이 연결되는 배출공(43e)이 형성된 반응기본체(43a)와, 상기 유로(43b)의 중간부에 충진되어 유로(43b)를 통과하는 EDTA화학세정폐수에 포함된 유기물질이 분해되도록 하는 촉매(43c)를 포함하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치가 제공된다.According to another feature of the present invention, the catalytic gasification reaction device 40 includes an outer case 42 having an exhaust port 42a formed on the upper side in the vertical direction, and extending in the vertical direction inside the outer case 42 . The catalytic gasification reactor 43 provided with a flow path 43b extending in the vertical direction therein, and the EDTA chemical cleaning provided at the lower side of the outer case 42 and supplied to the inside of the catalytic gasification reactor 43 and a second gas burner 44 for secondary heating to gasify the supercritical water of wastewater, wherein the catalytic gasification reactor 43 extends in the vertical direction, the flow path 43b is formed therein, and the connection A supply hole 43d to which the tube 41 is connected is formed, and the reaction main body 43a having an outlet hole 43e to which the discharge tube 51 is connected is formed on the other side, and the flow passage 43b is filled in the middle portion. There is provided an EDTA chemical cleaning wastewater treatment apparatus comprising a catalyst (43c) for decomposing organic materials contained in the EDTA chemical cleaning wastewater passing through the flow path (43b).

본 발명의 또 다른 특징에 따르면, 상기 공급관(21)의 중간부에 구비된 제1 및 제2 열교환기(61,62)를 더 포함하고, 상기 배출관(51)은 상기 제1 및 제2 열교환기(61,62)에 연결되어, 상기 초임계수전처리장치(20)와 촉매가스화반응장치(40)를 통과하면서 초임계수로 변화된 후 가스화되어 배출되는 고온의 EDTA화학세정폐수가, 상기 공급관(21)을 통해 상기 초임계수전처리장치(20)로 공급되는 EDTA화학세정폐수와 열교환하여 공정열을 회수하도록 된 것을 특징으로 하는 EDTA화학세정폐수 처리장치가 제공된다.According to another feature of the present invention, it further includes first and second heat exchangers 61 and 62 provided in the middle of the supply pipe 21 , and the discharge pipe 51 includes the first and second heat exchanges. The high-temperature EDTA chemical cleaning wastewater that is connected to the groups 61 and 62, is changed to supercritical water while passing through the supercritical water pretreatment device 20 and the catalytic gasification reaction device 40, is gasified and discharged, the supply pipe 21 ) through the EDTA chemical cleaning wastewater treatment device, characterized in that to recover the process heat by heat exchange with the EDTA chemical cleaning wastewater supplied to the supercritical water pretreatment device 20 is provided.

본 발명의 또 다른 특징에 따르면, 상기 고압슬러리펌프(30)는 상기 공급관(21)을 통해 초임계수전처리장치(20)로 공급되는 EDTA화학세정폐수를 250기압 이상으로 가압하도록 구성되고, 상기 제1 가스버너(24)는 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수를 400도 이상으로 가열하여, 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수가 초임계수상태로 변화되도록 하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치가 제공된다.According to another feature of the present invention, the high-pressure slurry pump 30 is configured to pressurize the EDTA chemical cleaning wastewater supplied to the supercritical water pretreatment device 20 through the supply pipe 21 to 250 atm or higher, and 1 gas burner 24 heats the EDTA chemical cleaning wastewater supplied to the inside of the supercritical water pretreatment reactor 23 to 400 degrees or more, and the EDTA chemical cleaning wastewater supplied into the supercritical water pretreatment reactor 23 is There is provided an EDTA chemical cleaning wastewater treatment device, characterized in that it is changed to a supercritical water state.

본 발명에 따른 EDTA화학세정폐수 처리장치는 EDTA화학세정폐수를 고온 및 고압으로 가열 및 가압하여, EDTA화학세정폐수를 초임계수상태로 변환시켜 EDTA화학세정폐수에 포함된 금속성분을 제거하고, 초임계수상태의 EDTA화학세정폐수는 가스화된 후 촉매(43c)분위기에서 가스화는 촉진되어 EDTA화학세정폐수에 포함된 유기성분을 부생 가스로 분해한 후, 액체와 가스를 분리함으로써, 오염물질이 제거된 깨끗한 처리수를 얻게 된다.The EDTA chemical cleaning wastewater treatment apparatus according to the present invention heats and pressurizes the EDTA chemical cleaning wastewater at high temperature and high pressure, converts the EDTA chemical cleaning wastewater into a supercritical water state, and removes the metal components contained in the EDTA chemical cleaning wastewater, superimposed After the EDTA chemical cleaning wastewater in the counting state is gasified, gasification is promoted in the atmosphere of the catalyst 43c, decomposing the organic components contained in the EDTA chemical cleaning wastewater into by-product gas, and separating the liquid and gas, thereby Clean treated water is obtained.

따라서, 금속성분과 유기성분으로 오염된 EDTA화학세정폐수를 효과적으로 정화처리할 수 있을 뿐 아니라, 다이옥신 등과 같은 오염물질이 발생되지 않도록 친환경적으로 처리할 수 있는 장점이 있다.Therefore, it is possible to effectively purify and treat EDTA chemical cleaning wastewater contaminated with metal components and organic components, and there is an advantage in that it can be treated in an environment-friendly manner so that contaminants such as dioxins are not generated.

도 1은 본 발명에 따른 EDTA화학세정폐수 처리장치를 도시한 구성도,
도 2는 본 발명에 따른 EDTA화학세정폐수 처리장치의 초임계수전처리장치와 촉매가스화반응장치를 도시한 구성도이다.1 is a configuration diagram showing an EDTA chemical cleaning wastewater treatment apparatus according to the present invention;
2 is a block diagram showing a supercritical water pretreatment device and a catalytic gasification reaction device of the EDTA chemical cleaning wastewater treatment device according to the present invention.

이하, 본 발명을 첨부된 예시도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail based on the accompanying illustrative drawings.

도 1 및 도 2는 본 발명에 따른 EDTA화학세정폐수 처리장치를 도시한 것으로, EDTA화학세정폐수가 저장되는 폐수저장탱크(10)와, 공급관(21)을 통해 상기 폐수저장탱크(10)에 연결되어 공급관(21)을 통해 공급된 EDTA화학세정폐수에 포함된 금속성분을 제거하는 초임계수전처리장치(20)와, 상기 공급관(21)에 구비되어 폐수저장탱크(10)에 저장된 EDTA화학세정폐수를 가압하여 상기 초임계수전처리장치(20)로 공급하는 고압슬러리펌프(30)와, 연결관(41)을 통해 상기 초임계수전처리장치(20)에 연결되며 상기 초임계수전처리장치(20)에서 1차 처리된 EDTA화학세정폐수에 포함된 유기성분을 무해한 가스성분으로 분해하는 촉매가스화반응장치(40)와, 배출관(51)을 통해 상기 촉매가스화반응장치(40)에 연결되며 촉매가스화반응장치(40)에서 배출된 EDTA화학세정폐수를 가스성분과 액체성분으로 분리하는 기액분리기(50)와, 상기 공급관(21)의 중간부에 구비된 제1 및 제2 열교환기(61,62)로 구성된다.1 and 2 show an EDTA chemical cleaning wastewater treatment apparatus according to the present invention, a wastewater storage tank 10 in which EDTA chemical cleaning wastewater is stored, and a supply pipe 21 to the wastewater storage tank 10 A supercritical water pretreatment device 20 for removing metal components included in the EDTA chemical cleaning wastewater connected and supplied through the supply pipe 21, and the EDTA chemical cleaning provided in the supply pipe 21 and stored in the wastewater storage tank 10 It is connected to the supercritical water pretreatment device 20 through a high-pressure slurry pump 30 that pressurizes wastewater and supplies it to the supercritical water pretreatment device 20, and the connection pipe 41, and in the supercritical water pretreatment device 20 A catalytic gasification reactor 40 for decomposing organic components contained in the primary treated EDTA chemical cleaning wastewater into harmless gas components, and a catalytic gasification reactor connected to the catalytic gasification reactor 40 through a discharge pipe 51 A gas-liquid separator 50 for separating the EDTA chemical cleaning wastewater discharged from (40) into a gas component and a liquid component, and the first and second heat exchangers 61 and 62 provided in the middle of the supply pipe 21 is composed

이때, 원자력발전소에 구비된 증기발생기의 전열관을 청소(랜싱)할 때 발생된 EDTA화학세정폐수는 저장소(1)에 임시로 저장되며, 상기 폐수저장탱크(10)는 배관(2)을 통해 상기 저장소(1)에 연결되어, 저장소(1)에 저장된 EDTA화학세정폐수가 폐수저장탱크(10)에 저장될 수 있도록 한다.At this time, the EDTA chemical cleaning wastewater generated when cleaning (lansing) the heat pipe of the steam generator provided in the nuclear power plant is temporarily stored in the storage 1, and the wastewater storage tank 10 is It is connected to the storage (1) so that the EDTA chemical cleaning wastewater stored in the storage (1) can be stored in the wastewater storage tank (10).

상기 초임계수전처리반응장치(20)는 도 2에 도시한 바와 같이, 상하방향으로 상측에는 배기구(22a)가 형성된 외부케이스(22)와, 상기 외부케이스(22)의 내부에 상하방향으로 연장되도록 구비되며 내부에는 상하방향으로 연장된 유로(23b)가 형성된 초임계수전처리반응기(23)와, 상기 외부케이스(22)의 하부 일측에 구비되며 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수를 가열하여 EDTA화학세정폐수를 초임계수상태로 변환시키는 제1 가스버너(24)와, 상기 초임계수전처리반응기(23)에 연결되어 EDTA화학세정폐수에서 분리된 금속성분을 수집하는 침전탱크(25)로 구성된다.As shown in FIG. 2, the supercritical water pretreatment reaction device 20 includes an outer case 22 having an exhaust port 22a formed on the upper side in the vertical direction, and extending in the vertical direction inside the outer case 22. The supercritical water pretreatment reactor 23 provided with a flow path 23b extending in the vertical direction therein, and EDTA provided at the lower side of the outer case 22 and supplied to the inside of the supercritical water pretreatment reactor 23 The first gas burner 24 for heating the chemical cleaning wastewater to convert the EDTA chemical cleaning wastewater into a supercritical water state, and the supercritical water pretreatment reactor 23 are connected to the precipitation to collect the metal components separated from the EDTA chemical cleaning wastewater It consists of a tank (25).

상기 외부케이스(22)는 내열성의 재질로 구성된다.The outer case 22 is made of a heat-resistant material.

상기 초임계수전처리반응기(23)는 상하방향으로 연장되며 내부에 상기 유로(23b)가 형성된 반응기본체(23a)와, 상기 유로(23b)의 내부 하측에 구비된 금속스크린메쉬부재(23c)로 구성된다.The supercritical water pretreatment reactor 23 includes a reaction main body 23a extending in the vertical direction and having the flow path 23b therein, and a metal screen mesh member 23c provided on the inner lower side of the flow path 23b. do.

상기 반응기본체(23a)는 고온, 고압용 내열 고강도 금속재로 구성된 것으로, 유로(23b)의 하단에는 내경이 확대된 확경부(23d)가 형성된다.The reaction body 23a is made of a high-temperature, high-pressure, heat-resistant high-strength metal material, and an enlarged diameter portion 23d with an enlarged inner diameter is formed at the lower end of the flow path 23b.

그리고, 상기 반응기본체(23a)의 상단 일측에는 상기 공급관(21)이 연결되는 공급공(23e)이 형성되고 하단 일측에는 상기 연결관(41)이 연결되는 배출공(23f)이 형성된다.In addition, a supply hole 23e to which the supply pipe 21 is connected is formed at one upper end of the reaction main body 23a, and a discharge hole 23f to which the connection pipe 41 is connected is formed at one lower end.

상기 배출공(23f)은 상기 확경부(23d)의 중간부에 형성된다.The discharge hole 23f is formed in the middle of the enlarged diameter portion 23d.

또한, 상기 반응기본체(23a)의 하단에는 상기 확경부(23d)에 연결되는 연장관(23g)이 구비된다.In addition, an extension pipe 23g connected to the enlarged diameter part 23d is provided at the lower end of the reaction main body 23a.

상기 금속스크린메쉬부재(23c)는 상하방향으로 연장된 원통형으로 구성되며 둘레면에는 다수개의 미세한 통공이 형성된 것으로, 상기 확경부(23d)에 유로(23b)와 연결되도록 구비된다.The metal screen mesh member 23c has a cylindrical shape extending in the vertical direction, a plurality of fine through holes are formed on the circumferential surface, and is provided to be connected to the flow path 23b in the enlarged diameter portion 23d.

따라서, 후술하는 바와 같이, 유로(23b)의 내부에서 초임계수상태로 변화된 EDTA화학세정폐수가 상기 금속스크린메쉬부재(23c)를 통과하여 상기 배출공(23f)으로 배출되면서, EDTA화학세정폐수에 포함된 이온화된 금속성분이 금속스크린메쉬부재(23c)에 의해 필터링되어 제거된다.Therefore, as will be described later, the EDTA chemical cleaning wastewater changed to the supercritical water state inside the flow path 23b passes through the metal screen mesh member 23c and is discharged to the discharge hole 23f. The contained ionized metal component is filtered and removed by the metal screen mesh member 23c.

상기 제1 가스버너(24)는 LPG를 연료로하는 LPG가스버너를 이용하며, 상기 초임계수전처리반응기(23)의 유로(23b)의 내부로 공급된 EDTA화학세정폐수를 400도 이상으로 가열하여, EDTA화학세정폐수를 초임계수상태로 변환시키는 기능을 한다.The first gas burner 24 uses an LPG gas burner using LPG as a fuel, and heats the EDTA chemical cleaning wastewater supplied into the flow path 23b of the supercritical water pretreatment reactor 23 to 400 degrees or more. , It functions to convert EDTA chemical cleaning wastewater into supercritical water state.

상기 침전탱크(25)는 상기 연장관(23g)의 하단에 구비된다.The settling tank 25 is provided at the lower end of the extension pipe 23g.

이때, 상기 연장관(23g)의 중간부에는 개폐밸브(23h)가 구비된다.At this time, an on/off valve 23h is provided in the middle portion of the extension pipe 23g.

상기 고압슬러리펌프(30)는 상기 폐수저장탱크(10)에 저장된 EDTA화학세정폐수를 250기압 이상으로 가압하여 상기 초임계수전처리장치(20)의 유로(23b)의 내부로 공급하도록 구성된다.The high-pressure slurry pump 30 is configured to pressurize the EDTA chemical cleaning wastewater stored in the wastewater storage tank 10 to 250 atm or higher and supply it into the flow path 23b of the supercritical water pretreatment device 20 .

상기 촉매가스화반응장치(40)는 도 2에 도시한 바와 같이, 상하방향으로 상측에는 배기구(42a)가 형성된 외부케이스(42)와, 상기 외부케이스(42)의 내부에 상하방향으로 연장되도록 구비되며 내부에는 상하방향으로 연장된 유로(43b)가 형성된 촉매가스화반응기(43)와, 상기 외부케이스(42)의 하부 일측에 구비되며 상기 촉매가스화반응기(43)의 내부로 공급된 EDTA화학세정폐수의 초임계수를 가스화가 되도록 2차 가열하는 제2 가스버너(44)로 구성된다.As shown in FIG. 2, the catalytic gasification reaction device 40 is provided with an outer case 42 having an exhaust port 42a formed on the upper side in the vertical direction, and extending in the vertical direction inside the outer case 42. EDTA chemical cleaning wastewater provided inside the catalytic gasification reactor 43 with a flow path 43b extending in the vertical direction formed therein, and at one lower side of the outer case 42 and supplied to the inside of the catalytic gasification reactor 43 It is composed of a second gas burner 44 for secondary heating to gasify the supercritical water of.

상기 외부케이스(42)는 내열성의 재질로 구성된다.The outer case 42 is made of a heat-resistant material.

상기 촉매가스화반응기(43)는 상하방향으로 연장되며 내부에 상기 유로(43b)가 형성된 반응기본체(43a)와, 상기 유로(43b)의 중간부에 충진되어 유로(43b)를 통과하는 EDTA화학세정폐수에 포함된 유기물질이 분해되도록 하는 촉매(43c)로 구성된다.The catalytic gasification reactor 43 extends in the vertical direction and is filled in the middle of the reaction main body 43a having the flow path 43b formed therein, and the flow path 43b and passes through the flow path 43b for chemical cleaning. It is composed of a catalyst 43c that decomposes organic substances contained in wastewater.

상기 반응기본체(43a)는 내열 고강도의 금속재로 구성된 것으로, 하부일측에는 상기 연결관(41)이 연결되는 공급공(43d)이 형성되고 상부일측에는 상기 배출관(51)이 연결되는 배출공(43e)이 형성된다.The reaction body 43a is made of a heat-resistant and high-strength metal material, and a supply hole 43d to which the connection pipe 41 is connected is formed on one lower side, and a discharge hole 43e to which the discharge pipe 51 is connected to the upper one side. ) is formed.

상기 촉매(43c)는 상기 유로(43b)의 내부로 공급된 EDTA화학세정폐수의 내부에 포함된 유기물질과 반응하여, 유기물질을 무해한 가스성분으로 분해하도록 구성된다.The catalyst 43c reacts with the organic material contained in the EDTA chemical cleaning wastewater supplied into the flow path 43b to decompose the organic material into harmless gas components.

이때, 상기 유로(43b)의 내부 하측에는 타공판(43f)이 구비되어, 타공판(43f)의 상측에 상기 촉매(43c)를 충전할 수 있도록 구성된다.At this time, a perforated plate 43f is provided on the lower inner side of the flow path 43b, and is configured to fill the catalyst 43c on the upper side of the perforated plate 43f.

이러한 촉매(43c)는 배기가스를 정화하는 배기가스정화장치 등에 일반적으로 사용되는 것임으로 이에 대한 더 이상 자세한 설명은 생략한다.Since the catalyst 43c is generally used in an exhaust gas purification device for purifying exhaust gas, a detailed description thereof will be omitted.

상기 제2 가스버너(44)는 LPG를 연료로하는 LPG가스버너를 이용하며, 상기 촉매가스반응기의 유로(43b)의 내부로 공급된 EDTA화학세정폐수를 650도에 이르도록 가열한다.The second gas burner 44 uses an LPG gas burner using LPG as a fuel, and heats the EDTA chemical cleaning wastewater supplied into the flow path 43b of the catalytic gas reactor to 650 degrees.

상기 배출관(51)은 중간부에 방열기(51a)가 구비되어, 상기 초임계수전처리장치(20)와 촉매가스반응장치를 통과하여 가열된 EDTA화학세정폐수를 정해진 온도로 냉각시키도록 구성된다.The discharge pipe 51 is provided with a radiator 51a in the middle portion, and is configured to cool the EDTA chemical cleaning wastewater heated through the supercritical water pretreatment device 20 and the catalytic gas reaction device to a predetermined temperature.

또한, 상기 배출관(51)은 상기 제1 및 제2 열교환기(61,62)에 연결되어, 상기 초임계수전처리장치(20)와 촉매가스화반응장치(40)를 통과하면서, 초임계수로 변화된 후 가스화되어 배출되는 고온의 EDTA화학세정폐수가, 상기 공급관(21)을 통해 상기 초임계수전처리장치(20)로 공급되는 EDTA화학세정폐수와 열교환하여 공정열을 회수하도록 구성된다.In addition, the discharge pipe 51 is connected to the first and second heat exchangers 61 and 62, passes through the supercritical water pretreatment device 20 and the catalytic gasification reactor 40, and is changed to supercritical water. The high-temperature EDTA chemical cleaning wastewater gasified and discharged is configured to recover process heat by exchanging heat with the EDTA chemical cleaning wastewater supplied to the supercritical water pretreatment device 20 through the supply pipe 21 .

상기 기액분리기(50)는 상부 일측에 가스가 배출되는 가스배출구(53)가 형성되고, 하측면에는 액체가 배출되는 액체배출구(54)가 형성된다.The gas-liquid separator 50 has a gas outlet 53 through which gas is discharged on one side of the upper side, and a liquid outlet 54 through which liquid is discharged is formed on the lower side.

그리고, 상기 액체배출구(54)의 하측에는 수집통(55)이 구비되고, 상기 수집통(55)에는 저장통(56)이 연결된다.In addition, a collecting trough 55 is provided at a lower side of the liquid outlet 54 , and a storage bin 56 is connected to the collecting trough 55 .

이와 같이 구성된 EDTA화학세정폐수 처리장치의 작용을 설명하면 다음과 같다.The operation of the EDTA chemical cleaning wastewater treatment device configured as described above will be described as follows.

우선, 상기 폐수저장탱크(10)에 저장된 EDTA화학세정폐수는 상기 고압슬러리펌프(30)에 의해 250기압 이상으로 가압된 후, 상기 공급관(21)을 통해 상기 초임계수전처리장치(20)에 구비된 초임계수전처리반응기(23)의 유로(23b)의 상단으로 공급된다.First, the EDTA chemical cleaning wastewater stored in the wastewater storage tank 10 is pressurized to 250 atm or higher by the high-pressure slurry pump 30, and then is provided in the supercritical water pretreatment device 20 through the supply pipe 21 It is supplied to the upper end of the flow path (23b) of the supercritical water pretreatment reactor (23).

그리고, 이와 같이 유로(23b)로 공급된 EDTA화학세정폐수는 상기 제1 가스버너(24)에 의해 400도 이상으로 가열되면서, 초임계수로 변환된다.And, the EDTA chemical cleaning wastewater supplied to the flow path 23b as described above is converted into supercritical water while being heated to 400 degrees or more by the first gas burner 24 .

상기 초임계수는 물을 374℃와 218기압 이상으로 가열, 가압하여, 물이 고체(얼음)나 액체(물) 또는 기체(수증기)가 아닌 제 4의 형태로 변환된 상태를 나타내는 것으로, 상기 EDTA화학세정폐수가 초임계수상태로 변환되면 EDTA화학세정폐수에 포함된 이온화된 금속성분이 EDTA화학세정폐수에서 석출된다.The supercritical water represents a state in which water is converted into a fourth form rather than solid (ice), liquid (water), or gas (water vapor) by heating and pressurizing water to 374 ° C. and 218 atmospheres or more, the EDTA When the chemical cleaning wastewater is converted to a supercritical water state, the ionized metal components contained in the EDTA chemical cleaning wastewater are precipitated from the EDTA chemical cleaning wastewater.

그리고, 이와 같이 초임계수로 변환된 EDTA화학세정폐수가 상기 금속스크린메쉬부재(23c)를 통과하면, EDTA화학세정폐수에서 석출된 금속성분이 필터링되고, 금속성분이 제거된 EDTA화학세정폐수가 상기 배출공(23f)과 연결관(41)을 통해 상기 촉매가스화반응장치(40)에 구비된 촉매가스화반응기(43)의 유로(43b)로 공급된다.And, when the EDTA chemical cleaning wastewater converted into supercritical water in this way passes through the metal screen mesh member 23c, the metal component deposited in the EDTA chemical cleaning wastewater is filtered, and the EDTA chemical cleaning wastewater from which the metal component is removed is the It is supplied to the flow path 43b of the catalytic gasification reactor 43 provided in the catalytic gasification reactor 40 through the discharge hole 23f and the connection pipe 41 .

이때, 상기 금속스크린메쉬부재(23c)에 의해 필터링된 금속성분은 상기 연장관(23g)을 통해 침전탱크(25)로 수집된다.At this time, the metal component filtered by the metal screen mesh member 23c is collected into the settling tank 25 through the extension pipe 23g.

그리고, 상기 촉매가스화반응기(43)의 유로(43b)로 공급된 EDTA화학세정폐수는 상기 제2 가스버너(44)에 의해 650도까지 가열되어 초임계수상태에서 가스화가 이루어지게 되며 이와 같이 가스화된 EDTA화학세정폐수는 상기 유로(43b)에 충진된 촉매(43c) 분위기에서 가스화는 촉진되어, EDTA화학세정폐수에 포함된 유기물질이 무해한 가스성분으로 분해된다.And, the EDTA chemical cleaning wastewater supplied to the flow path 43b of the catalytic gasification reactor 43 is heated to 650 degrees by the second gas burner 44 to be gasified in a supercritical water state. Gasification of the EDTA chemical cleaning wastewater is promoted in the atmosphere of the catalyst 43c filled in the flow path 43b, and organic substances contained in the EDTA chemical cleaning wastewater are decomposed into harmless gas components.

그리고, 이와 같이 촉매가스화반응장치(40)를 통과한 EDTA화학세정폐수는 배출관(51)을 통해 기액분리기(50)로 공급되어, EDTA화학세정폐수에 포함된 부생가스성분은 가스배출구(53)를 통해 외부로 배출되고, 금속성분과 유기물질이 제거되어 정화된 액체성분, 즉, 처리수는 하측의 액체배출구(54)를 통해 상기 수집통(55)으로 배출되어 수집된다.And, the EDTA chemical cleaning wastewater that has passed through the catalytic gasification reactor 40 as described above is supplied to the gas-liquid separator 50 through the discharge pipe 51, and the by-product gas component contained in the EDTA chemical cleaning wastewater is a gas outlet 53. The liquid component that is discharged to the outside through the , and the metal component and organic material are removed and purified, that is, the treated water is discharged to the collecting container 55 through the liquid outlet 54 at the lower side and collected.

한편, 상기 촉매가스화반응장치(40)에서 배출관(51)으로 배출된 고온의 EDTA화학세정폐수는 상기 제1 및 제2 열교환기(61,62)를 통과하면서 상기 공급관(21)을 통해 초임계수전처리장치(20)로 공급되는 EDTA화학세정폐수를 가열함으로써, 공정열을 회수하여 열효율이 향상되도록 한다.On the other hand, the high-temperature EDTA chemical cleaning wastewater discharged from the catalytic gasification reactor 40 to the discharge pipe 51 passes through the first and second heat exchangers 61 and 62 while passing through the supply pipe 21 to supercritical water. By heating the EDTA chemical cleaning wastewater supplied to the pretreatment device 20, process heat is recovered to improve thermal efficiency.

그리고, 상기 수집통(55)에 수집된 정화된 처리수는 상기 저장통(56)으로 공급되어 저장되며, 이와 같이 저장통(56)에 저장된 처리수는 별도의 처리과정을 통해 처리된다.In addition, the purified treated water collected in the collecting tank 55 is supplied to and stored in the storage tank 56 , and the treated water stored in the storage tank 56 in this way is treated through a separate treatment process.

이와 같이 구성된 EDTA화학세정폐수 처리장치는 EDTA화학세정폐수를 고온 및 고압으로 가열 및 가압하여, EDTA화학세정폐수를 초임계수상태로 변환시켜 EDTA화학세정폐수에 포함된 금속성분을 제거하고, 초임계수상태의 EDTA화학세정폐수는 가스화된 후 촉매(43c)분위기에서 가스화는 촉진되어 EDTA화학세정폐수에 포함된 유기성분을 부생 가스로 분해한 후, 액체와 가스를 분리함으로써, 오염물질이 제거된 깨끗한 처리수를 얻게 된다.The EDTA chemical cleaning wastewater treatment device configured as described above heats and pressurizes the EDTA chemical cleaning wastewater at high temperature and high pressure, converts the EDTA chemical cleaning wastewater into a supercritical water state, removes the metal components contained in the EDTA chemical cleaning wastewater, and removes the supercritical water. After the EDTA chemical cleaning wastewater in the state is gasified, gasification is promoted in the atmosphere of the catalyst 43c, decomposing the organic components contained in the EDTA chemical cleaning wastewater into by-product gas, and then separating the liquid from the gas. get treated water.

따라서, 금속성분과 유기성분으로 오염된 EDTA화학세정폐수를 효과적으로 정화처리할 수 있을 뿐 아니라, 다이옥신 등과 같은 오염물질이 발생되지 않도록 친환경적으로 처리할 수 있는 장점이 있다.Therefore, it is possible to effectively purify and treat EDTA chemical cleaning wastewater contaminated with metal components and organic components, and there is an advantage in that it can be treated in an environment-friendly manner so that contaminants such as dioxins are not generated.

또한, 상기 공급관(21)의 중간부에는 제1 및 제2 열교환기(61,62)가 구비되고, 상기 배출관(51)은 상기 제1 및 제2 열교환기(61,62)에 연결되어, 상기 초임계수전처리장치(20)와 촉매가스화반응장치(40)를 통과하면서 초임계수 및 가스화처리되고, 배출되는 고온의 EDTA화학세정폐수가 상기 공급관(21)을 통해 공급되는 EDTA화학세정폐수와 열교환하여 가열함으로써, 상기 제1 및 제2 가스버너(24,44)를 이용하여 EDTA화학세정폐수를 가열할 때 시설전력에 부담을 줄이고 열에너지 효율을 향상시킬 수 있는 장점이 있다.In addition, first and second heat exchangers 61 and 62 are provided in the middle of the supply pipe 21, and the discharge pipe 51 is connected to the first and second heat exchangers 61 and 62, While passing through the supercritical water pretreatment device 20 and the catalytic gasification reactor 40, the supercritical water and gasification treatment, and discharged high-temperature EDTA chemical cleaning wastewater exchanges heat with the EDTA chemical cleaning wastewater supplied through the supply pipe 21 By heating by using the first and second gas burners 24 and 44, there is an advantage in that it is possible to reduce the burden on facility power and improve thermal energy efficiency when heating the EDTA chemical cleaning wastewater.

10. 폐수저장탱크 20. 초임계수전처리장치
30. 고압슬러리펌프 40. 촉매가스화반응장치
50. 기액분리기 61,62. 제1 및 제2 열교환기10. Wastewater storage tank 20. Supercritical water pretreatment device
30. High-pressure slurry pump 40. Catalytic gasification reactor
50. Gas-liquid separator 61,62. first and second heat exchangers

Claims (5)

EDTA화학세정폐수가 저장되는 폐수저장탱크(10)와,
공급관(21)을 통해 상기 폐수저장탱크(10)에 연결되어 공급관(21)을 통해 공급된 EDTA화학세정폐수에 포함된 금속성분을 제거하는 초임계수전처리장치(20)와,
상기 공급관(21)에 구비되어 폐수저장탱크(10)에 저장된 EDTA화학세정폐수를 가압하여 상기 초임계수전처리장치(20)로 공급하는 고압슬러리펌프(30)와,
연결관(41)을 통해 상기 초임계수전처리장치(20)에 연결되며 상기 초임계수전처리장치(20)에서 1차 처리된 EDTA화학세정폐수에 포함된 유기성분을 무해한 가스성분으로 분해하는 촉매가스화반응장치(40)와,
배출관(51)을 통해 상기 촉매가스화반응장치(40)에 연결되며 촉매가스화반응장치(40)에서 배출된 EDTA화학세정폐수를 가스성분과 액체성분으로 분리하는 기액분리기(50)를 포함하고,
상기 초임계수전처리장치(20)는
상하방향으로 상측에는 배기구(22a)가 형성된 외부케이스(22)와,
상기 외부케이스(22)의 내부에 상하방향으로 연장되도록 구비되며 내부에는 상하방향으로 연장된 유로(23b)가 형성된 초임계수전처리반응기(23)와,
상기 외부케이스(22)의 하부 일측에 구비되며 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수를 가열하여 EDTA화학세정폐수를 초임계수 상태로 변환시키는 제1 가스버너(24)와,
상기 초임계수전처리반응기(23)에 연결되어 EDTA화학세정폐수에서 분리된 금속성분을 수집하는 침전탱크(25)를 포함하고,
상기 초임계수전처리반응기(23)는
상하방향으로 연장되며 내부에 상기 유로(23b)가 형성되며 상단 일측에는 상기 공급관(21)이 연결되는 공급공(23e)이 형성되고 하단 일측에는 상기 연결관(41)이 연결되는 배출공(23f)이 형성된 반응기본체(23a)와,
상기 유로(23b)의 내부 하측에 구비되어 유로(23b)의 내부에서 초임계수 상태로 변화된 EDTA화학세정폐수에 포함된 금속성분을 걸러내는 금속스크린메쉬부재(23c)를 포함하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치.
A wastewater storage tank 10 in which EDTA chemical cleaning wastewater is stored, and
A supercritical water pretreatment device 20 that is connected to the wastewater storage tank 10 through the supply pipe 21 and removes metal components contained in the EDTA chemical cleaning wastewater supplied through the supply pipe 21;
A high-pressure slurry pump 30 provided in the supply pipe 21 to pressurize the EDTA chemical cleaning wastewater stored in the wastewater storage tank 10 and supply it to the supercritical water pretreatment device 20;
Catalytic gasification reaction that is connected to the supercritical water pretreatment device 20 through a connection pipe 41 and decomposes organic components contained in the EDTA chemical cleaning wastewater primarily treated in the supercritical water pretreatment device 20 into harmless gas components device 40;
It is connected to the catalytic gasification reactor 40 through the discharge pipe 51 and includes a gas-liquid separator 50 that separates the EDTA chemical cleaning wastewater discharged from the catalytic gasification reactor 40 into a gas component and a liquid component,
The supercritical water pretreatment device 20 is
An outer case 22 having an exhaust port 22a formed on the upper side in the vertical direction,
A supercritical water pretreatment reactor 23 provided to extend in the vertical direction inside the outer case 22 and having a flow path 23b extending in the vertical direction therein;
A first gas burner (24) provided on the lower side of the outer case (22) and converting the EDTA chemical cleaning wastewater into a supercritical water state by heating the EDTA chemical cleaning wastewater supplied to the supercritical water pretreatment reactor (23) Wow,
and a precipitation tank 25 connected to the supercritical water pretreatment reactor 23 to collect the metal components separated from the EDTA chemical cleaning wastewater,
The supercritical water pretreatment reactor 23 is
It extends in the vertical direction, the flow path 23b is formed therein, a supply hole 23e to which the supply pipe 21 is connected is formed at one upper end, and a discharge hole 23f to which the connection pipe 41 is connected to one lower end. ) is formed with the reaction body (23a) and,
EDTA comprising a metal screen mesh member (23c) provided on the lower inner side of the flow path (23b) to filter the metal components contained in the EDTA chemical cleaning wastewater changed to a supercritical water state inside the flow path (23b) Chemical cleaning wastewater treatment equipment.
 삭제delete 제 1항에 있어서,
상기 촉매가스화반응장치(40)는
상하방향으로 상측에는 배기구(42a)가 형성된 외부케이스(42)와,
상기 외부케이스(42)의 내부에 상하방향으로 연장되도록 구비되며 내부에는 상하방향으로 연장된 유로(43b)가 형성된 촉매가스화반응기(43)와,
상기 외부케이스(42)의 하부 일측에 구비되며 상기 촉매가스화반응기(43)의 내부로 공급된 EDTA화학세정폐수의 초임계수를 가스화가 되도록 2차 가열하는 제2 가스버너(44)를 포함하고,
상기 촉매가스화반응기(43)는
상하방향으로 연장되며 내부에 상기 유로(43b)가 형성되며 일측에는 상기 연결관(41)이 연결되는 공급공(43d)이 형성되고 타측에는 상기 배출관(51)이 연결되는 배출공(43e)이 형성된 반응기본체(43a)와,
상기 유로(43b)의 중간부에 충진되어 유로(43b)를 통과하는 EDTA화학세정폐수에 포함된 유기물질이 분해되도록 하는 촉매(43c)를 포함하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치.
The method of claim 1,
The catalytic gasification reactor 40 is
An outer case 42 having an exhaust port 42a formed on the upper side in the vertical direction, and
A catalytic gasification reactor 43 provided to extend in the vertical direction inside the outer case 42 and having a flow path 43b extending in the vertical direction therein;
It is provided on one lower side of the outer case 42 and includes a second gas burner 44 for secondary heating to gasify the supercritical water of the EDTA chemical cleaning wastewater supplied to the inside of the catalytic gasification reactor 43,
The catalytic gasification reactor 43 is
It extends in the vertical direction, the flow path 43b is formed therein, a supply hole 43d to which the connection pipe 41 is connected is formed on one side, and a discharge hole 43e to which the discharge pipe 51 is connected to the other side is formed. The formed reaction body (43a) and,
EDTA chemical cleaning wastewater treatment apparatus, characterized in that it includes a catalyst (43c) that is filled in the middle of the flow path (43b) to decompose the organic material contained in the EDTA chemical cleaning wastewater passing through the flow path (43b).
 제 1항에 있어서,
상기 공급관(21)의 중간부에 구비된 제1 및 제2 열교환기(61,62)를 더 포함하고,
상기 배출관(51)은 상기 제1 및 제2 열교환기(61,62)에 연결되어,
상기 초임계수전처리장치(20)와 촉매가스화반응장치(40)를 통과하면서 초임계수로 변화된 후 가스화되어 배출되는 고온의 EDTA화학세정폐수가, 상기 공급관(21)을 통해 상기 초임계수전처리장치(20)로 공급되는 EDTA화학세정폐수와 열교환하여 공정열을 회수하도록 된 것을 특징으로 하는 EDTA화학세정폐수 처리장치.
The method of claim 1,
It further includes first and second heat exchangers 61 and 62 provided in the middle of the supply pipe 21,
The discharge pipe 51 is connected to the first and second heat exchangers 61 and 62,
The high-temperature EDTA chemical cleaning wastewater, which is changed to supercritical water and then gasified and discharged while passing through the supercritical water pretreatment device 20 and the catalytic gasification reactor 40, passes through the supply pipe 21, and the supercritical water pretreatment device 20 ), EDTA chemical cleaning wastewater treatment device, characterized in that heat exchange with EDTA chemical cleaning wastewater supplied to recover process heat.
 제 1항에 있어서,
상기 고압슬러리펌프(30)는 상기 공급관(21)을 통해 초임계수전처리장치(20)로 공급되는 EDTA화학세정폐수를 250기압 이상으로 가압하도록 구성되고,
상기 제1 가스버너(24)는 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수를 400도 이상으로 가열하여, 상기 초임계수전처리반응기(23)의 내부로 공급된 EDTA화학세정폐수가 초임계수상태로 변화되도록 하는 것을 특징으로 하는 EDTA화학세정폐수 처리장치.The method of claim 1,
The high-pressure slurry pump 30 is configured to pressurize the EDTA chemical cleaning wastewater supplied to the supercritical water pretreatment device 20 through the supply pipe 21 to 250 atmospheres or more,
The first gas burner 24 heats the EDTA chemical cleaning wastewater supplied to the inside of the supercritical water pretreatment reactor 23 to 400 degrees or more, and the EDTA chemical cleaning supplied to the inside of the supercritical water pretreatment reactor 23 EDTA chemical cleaning wastewater treatment device, characterized in that the wastewater is changed to a supercritical water state.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000254668A (en) * 1999-03-12 2000-09-19 Makoto Ogose Supercritical hydrooxidizing reaction treating method and device for waste liquor
KR100729039B1 (en) 2005-10-31 2007-06-14 한국전력공사 A Plasma Reactor and A Spraying Device for treating Steam Generator Chemical Cleaning Solutions in Nuclear Power Plants
JP2014189588A (en) * 2013-03-26 2014-10-06 Chugoku Electric Power Co Inc:The Biomass gasification system with supercritical water and its operation method
KR101549959B1 (en) * 2014-09-12 2015-09-03 한국에너지기술연구원 System and method for processing wast liquid using supercritical water

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000254668A (en) * 1999-03-12 2000-09-19 Makoto Ogose Supercritical hydrooxidizing reaction treating method and device for waste liquor
KR100729039B1 (en) 2005-10-31 2007-06-14 한국전력공사 A Plasma Reactor and A Spraying Device for treating Steam Generator Chemical Cleaning Solutions in Nuclear Power Plants
JP2014189588A (en) * 2013-03-26 2014-10-06 Chugoku Electric Power Co Inc:The Biomass gasification system with supercritical water and its operation method
KR101549959B1 (en) * 2014-09-12 2015-09-03 한국에너지기술연구원 System and method for processing wast liquid using supercritical water

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