KR101329000B1 - Waste gas treating method of bolier and its apparatus - Google Patents

Waste gas treating method of bolier and its apparatus Download PDF

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KR101329000B1
KR101329000B1 KR1020110005633A KR20110005633A KR101329000B1 KR 101329000 B1 KR101329000 B1 KR 101329000B1 KR 1020110005633 A KR1020110005633 A KR 1020110005633A KR 20110005633 A KR20110005633 A KR 20110005633A KR 101329000 B1 KR101329000 B1 KR 101329000B1
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boiler
filter
exhaust gas
combustion
slaked lime
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KR1020110005633A
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Korean (ko)
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KR20120084225A (en
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김형태
홍성길
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에이치투더블유티이 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/55—Controlling; Monitoring or measuring
    • F23G2900/55006—Measuring material flow rates

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

본 발명은 효율적인 보일러 연소가스 처리방법 및 장치에 관한 것으로 그 주요 구성은, 보일러(110)의 연소 가스를 여과집진기(120) 및 습식세정탑(121)을 거쳐 배기 처리하는 보일러 배기가스 처리 방법에 있어서, 보일러(110)에서의 연소시 연소연도는 섭씨 850 내지 1200도가 되게하고, 가스의 체류시간은 전체 2초 이상이 되게 하여 완전 연소가 되게 하며, 보일러(110) 내 연소시 일산화탄소 농도는 50PPM 이하가 되도록 운전하기 위하여는 산소 농도가 12% 되게 운전하며, 여과집진기(120)에서의 여과속도는 유량으로는 0.8 내지 0.5m3/m2·min 가 되게 하고, 유속은 0.8 내지 0.5m/sec 로 하여 미스트 제거 효과를 높이며, 그리고 여과집진기(120)의 하부호퍼(161)에서 소석회와 염산가스의 반응으로 염화칼슘의 융착이 없도록 섭씨 130도 이상의 온도 조건에서 운전하여 습식세정탑(121) 입구에서 SOx 의 농도가 100ppm 이 넘지 않토록 처리하고, 습식세정탑(121)의 입구온도를 섭씨 40-50 도 내외로 급냉시켜, 감습 영역까지 냉각시켜 습도를 제거하도록 하는 것을 특징으로 하며, 보일러(110) 배기 가스 출구에는 냉각장치(127)에 의한 냉각수단을 구비하여 배기가스를 급냉시켜 배출하여, 다이옥신 등의 오염물질의 재합성을 최소화하고 보일러 전열면에서의 분진 부착을 억제하도록 한 것을 특징으로 하며, 본 발명에 따른 장치 구성은, 보일러(110)와, 보일러의 연소 가스 처리를 위한 여과집진기(120)와, 상기한 여과집진기(120)로 활성탄과 소석회를 공급하기 위하여 설치하는 활성탄공급팬(128) 및 활성탄저장조(122) 그리고 소석회공급팬(129) 및 소석회저장조(125)와, 여과집진기를 거쳐 나온 배가스를 세정 공급수(123)에 의한 세정으로 습식처리하는 습식세정탑(121)과, 습식세정탑에 설치되고, 세정수를 순환시키는 습식세정탑순환펌프(124)를 포함하되, 상기한 여과집진기(120)에는 여과포(167)가 원통상으로 설치되어, 여과포 외주에서 내부로 배기가스가 통과하여 여과되도록 구성하고, 보일러(110)와 여과집진기(120) 사이에 설치되는 보일러배관(164)에는 상기한 소석회저장조(125)에서의 소석회 공급을 위한 노즐(162)이 설치되어, 분사에 의하여 소석회분말을 공급하도록 구성하고, 상기한 소석회와 활성탄의 투입량 조절은 굴뚝에서 대기로 배기되는 최종 배출 가스의 오염물질의 농도를 실시간으로 측정하는 TMS에서 정보를 받아 자동 조절되게 구성하고, 또한 습식세정탑(121)에는 PH분석기(126)를 설치하여, 이와 연동하여 가성소다 투입량을 자동조절하도록 구성한 것을 특징으로 한다The present invention relates to a method and apparatus for treating an efficient boiler flue gas, the main configuration of which is an exhaust gas treatment method for exhausting the combustion gas of the boiler (110) through a bag filter (120) and a wet scrubber (121). In this case, the combustion year during combustion in the boiler 110 is to be 850 to 1200 degrees Celsius, the residence time of the gas is more than 2 seconds to be a complete combustion, the carbon monoxide concentration during combustion in the boiler 110 is 50PPM In order to operate to be less than or equal to the oxygen concentration is driven to 12%, the filtration rate in the bag filter 120 is 0.8 to 0.5m 3 / m 2 · min as the flow rate, the flow rate is 0.8 to 0.5m / sec to increase mist elimination effect, and operate at a temperature of 130 degrees Celsius or higher so that calcium chloride is not fused by the reaction of slaked lime and hydrochloric acid in the lower hopper 161 of the bag filter 120. Treating the concentration of SOx at the inlet of the washing tower 121 not to exceed 100ppm, and rapidly cooling the inlet temperature of the wet washing tower 121 to about 40-50 degrees Celsius, cooling it to a humidity zone to remove humidity. In the exhaust gas outlet of the boiler 110, a cooling means by the cooling device 127 is provided to quench and exhaust the exhaust gas, thereby minimizing the resynthesis of contaminants such as dioxins and attaching dust on the heat transfer surface of the boiler. Characterized in that the apparatus, according to the present invention, the boiler 110, the filter dust collector 120 for treating the combustion gas of the boiler, and the activated dust and lime supplied to the filter dust filter 120 Activated carbon supply fan 128 and activated carbon storage tank 122 and the slaked lime supply fan 129 and the slaked lime storage tank 125, which are installed in order to clean the exhaust gas from the filter dust collector, are cleaned by the supply water 123. It includes a wet washing tower 121 for the food treatment, and a wet washing tower circulation pump 124 installed in the wet washing tower, circulating the washing water, the filter bag 120 is cylindrical in the filter bag 120 It is installed so that the exhaust gas is passed through the filter cloth from the outer periphery to the inside, and the boiler pipe 164 installed between the boiler 110 and the bag filter 120, the slaked lime supply from the slaked lime storage tank 125 described above Nozzle 162 for the installation is configured to supply the hydrated lime powder by spraying, the adjustment of the input amount of the hydrated lime and activated carbon is TMS for measuring in real time the concentration of pollutants in the final exhaust gas exhausted from the chimney to the atmosphere It is configured to automatically adjust to receive the information, and also installed in the wet washing tower 121 PH analyzer 126, characterized in that configured to automatically adjust the amount of caustic soda in conjunction with this.

Figure R1020110005633
Figure R1020110005633

Description

보일러 연소가스 처리방법 및 장치{WASTE GAS TREATING METHOD OF BOLIER AND ITS APPARATUS} WASTE GAS TREATING METHOD OF BOLIER AND ITS APPARATUS}

본 발명은 보일러 연소가스 처리방법 및 그에 따른 장치에 관한 것으로, 특히 하수슬러지, 폐유기물 등을 보일러에서 연소시켜 나오는 폐가스의 오염물질을 효율적으로 제거하기 위한 보일러 배기가스 처리 장치에 및 그에 의한 처리방법에 관한 것이다The present invention relates to a method for treating a boiler flue gas and a device therefor, and to a boiler exhaust gas treating device for efficiently removing contaminants of waste gas from combustion of sewage sludge, waste organic matter, etc. in a boiler, and a method for treating the same. Is about

일반적으로 폐기물을 연소 처리시 발생되는 폐배기 가스에는 많은 오염물질이 혼합되어 있다. 특히 폐유기물등에는 다이옥신을 포함한 대기 오염에 심각한 영악영향을 미치는 물질이 많이 함유되어 있는 바, 본 발명은 종래의 흔히 있는 배기가스 처리 설비들에서 효과적이고 효율적인 배가스 처리를 위한 운전 방법과 그에 따른 부수적인 처리 장치들의 조합을 발명한 것이다.
In general, a lot of pollutants are mixed in the waste exhaust gas generated from the combustion of waste. In particular, the waste organic matter contains a lot of substances that have a serious adverse effect on the air pollution, including dioxin, the present invention is an operation method for the effective and efficient flue gas treatment in conventional exhaust gas treatment facilities and the accompanying incident A combination of phosphorus processing devices is invented.

본 발명에서는 보일러를 포함한 집진기 및 세정탑 등에서의 처리 효율을 최적화 할 수 있는 운전 조건들을 발명하였으며, 아울러 그에 수반되는 효율적인 처리를 위한 설비 전체의 시스템을 개발하였다The present invention invented the operating conditions to optimize the treatment efficiency in the dust collector and washing tower including the boiler, and also developed the system of the entire facility for the efficient treatment accompanying

본 발명의 주요 구성은, 보일러(110)의 연소 가스를 여과집진기(120) 및 습식세정탑(121)을 거쳐 배기 처리하는 보일러 배기가스 처리 방법에 있어서, 보일러(110)에서의 연소시 연소연도는 섭씨 850 내지 1200도가 되게하고, 가스의 체류시간은 전체 2초 이상이 되게 하여 완전 연소가 되게 하며, 보일러(110) 내 연소시 일산화탄소 농도는 50PPM 이하가 되도록 운전하기 위하여는 산소 농도가 12% 되게 운전하며, 보일러 배기가스의 출구 온도는 섭씨 180도 내지 200도가 되게 하고, 여과집진기(120)에서의 여과속도는 유량으로는 0.8 내지 0.5m3/m2·min 가 되게 하고, 유속은 0.8 내지 0.5m/sec 로 하여 미스트 제거 효과를 높이며, 그리고 여과집진기(120)의 하부호퍼(161)에서 소석회와 염산가스의 반응으로 염화칼슘의 융착이 없도록 섭씨 130도 이상의 온도 조건에서 운전하여 습식세정탑(121) 입구에서 SOx 의 농도가 100ppm 이 넘지 않토록 처리하고, 습식세정탑(121)의 입구온도를 섭씨 40-50 도 내외로 급냉시켜, 감습 영역까지 냉각시켜 습도를 제거하도록 하는 것을 특징으로 하며, 보일러(110) 배기 가스 출구에는 냉각장치(127)에 의한 냉각수단을 구비하여 배기가스를 급냉시켜 배출하여, 다이옥신 등의 오염물질의 재합성을 최소화하고 보일러 전열면에서의 분진 부착을 억제하도록 한 것을 특징으로 하며, 본 발명에 따른 장치 구성은, 보일러(110)와, 보일러의 연소 가스 처리를 위한 여과집진기(120)와, 상기한 여과집진기(120)로 활성탄과 소석회를 공급하기 위하여 설치하는 활성탄공급팬(128) 및 활성탄저장조(122) 그리고 소석회공급팬(129) 및 소석회저장조(125)와, 여과집진기를 거쳐 나온 배가스를 세정 공급수(123)에 의한 세정으로 습식처리하는 습식세정탑(121)과, 습식세정탑에 설치되고, 세정수를 순환시키는 습식세정탑순환펌프(124)를 포함하되, 상기한 여과집진기(120)에는 여과포(167)가 원통상으로 설치되어, 여과포 외주에서 내부로 배기가스가 통과하여 여과되도록 구성하고, 보일러(110)와 여과집진기(120) 사이에 설치되는 보일러배관(164)에는 상기한 소석회저장조(125)에서의 소석회 공급을 위한 노즐(162)이 설치되어, 분사에 의하여 소석회분말을 공급하도록 구성하고, 상기한 소석회와 활성탄의 투입량 조절은 굴뚝에서 대기로 배기되는 최종 배출 가스의 오염물질의 농도를 실시간으로 측정하는 TMS에서 정보를 받아 자동 조절되게 구성하고, 또한 습식세정탑(121)에는 PH분석기(126)를 설치하여, 이와 연동하여 가성소다 투입량을 자동조절하도록 구성한 것을 특징으로 한다
The main configuration of the present invention, in the boiler exhaust gas treatment method for exhausting the combustion gas of the boiler 110 through the bag filter 120 and the wet cleaning tower 121, the combustion year at the time of combustion in the boiler 110 Is 850 to 1200 degrees Celsius, and the residence time of the gas is more than 2 seconds to make a complete combustion, the oxygen concentration is 12% to operate so that the carbon monoxide concentration during combustion in the boiler 110 is less than 50PPM. The temperature of the outlet of the boiler exhaust gas is 180 degrees to 200 degrees Celsius, and the filtration rate in the bag filter 120 is 0.8 to 0.5 m 3 / m 2 · min as the flow rate, and the flow rate is 0.8 To 0.5m / sec to increase the mist removal effect, and in the lower hopper 161 of the bag filter 120 to operate at a temperature condition of 130 degrees Celsius or more so as not to fuse the calcium chloride by the reaction of slaked lime and hydrochloric acid gas At the inlet of the wet scrubber 121, the concentration of SOx is treated not to exceed 100 ppm, and the inlet temperature of the wet scrubber 121 is quenched to around 40-50 degrees Celsius, cooling to a humidity zone to remove humidity. In the exhaust gas outlet of the boiler 110, a cooling means by the cooling device 127 is provided to quench the exhaust gas and discharge it, thereby minimizing the resynthesis of contaminants such as dioxins and dust on the boiler surface. Characterized in that the adhesion is suppressed, the apparatus configuration according to the present invention, the boiler 110, the filter dust collector 120 for treating the combustion gas of the boiler, and the filter dust collector 120 to the activated carbon and slaked lime Activated carbon supply pan 128 and activated carbon storage tank 122 and the slaked lime supply pan 129 and the slaked lime storage tank 125, which are installed to supply, and the exhaust gas passing through the bag filter, are washed by the supply water 123. Wet cleaning tower 121 for the wet treatment, and a wet washing tower circulation pump 124 is installed in the wet washing tower, circulating the washing water, the filter bag 120, the filter cloth 167 is cylindrical It is installed so that the exhaust gas is passed through the filter cloth from the outer periphery to the inside, and the boiler pipe 164 installed between the boiler 110 and the bag filter 120, the slaked lime supply from the slaked lime storage tank 125 described above Nozzle 162 for the installation is configured to supply the hydrated lime powder by spraying, the adjustment of the input amount of the hydrated lime and activated carbon is TMS for measuring in real time the concentration of pollutants in the final exhaust gas exhausted from the chimney to the atmosphere It is configured to automatically adjust to receive the information, and also installed in the wet washing tower 121 PH analyzer 126, characterized in that configured to automatically adjust the amount of caustic soda in conjunction with this.

본 발명에 의하면, 보일러의 연소 조건을 조절하여 발생 오염물이 최소화되게 하였으며, 그리고 여과집진기(120)의 하부호퍼(161)에서 소석회와 염산가스의 반응으로 염화칼슘의 융착이 없도록 섭씨 130도 이상의 온도 조건에서 운전하여 습식세정탑(121) 입구에서 SOx 의 농도가 100ppm 이 넘지 않토록 처리하고, 습식세정탑(121)의 입구온도를 섭씨 40-50 도 내외로 급냉시켜, 감습 영역까지 냉각시켜 습도를 제거하도록 하고, 굴뚝에서 대기로 배기되는 최종 배출 가스의 오염물질의 농도를 실시간으로 측정하는 TMS에서 정보를 받아 자동 조절되게 구성하고, 또한 습식세정탑(121)에는 PH분석기(126)를 설치하여, 이와 연동하여 가성소다 투입량을 자동조절하도록 구성 등등의로 인해 배기가스의 효과적이고 효율적인 처리로 대기오염 방지에 기여할 수 있다According to the present invention, by controlling the combustion conditions of the boiler to minimize the generation of contaminants, and in the lower hopper 161 of the bag filter 120, the temperature condition of 130 degrees Celsius or more so that the calcium chloride is not fused by the reaction of slaked lime and hydrochloric acid gas The wet cleaning tower 121 is treated at the inlet of the wet cleaning tower 121 so that the concentration of SOx does not exceed 100 ppm, and the inlet temperature of the wet washing tower 121 is rapidly cooled to around 40-50 degrees Celsius, and the humidity is cooled to a humidity zone. To remove, and configured to automatically adjust the information received from the TMS to measure the concentration of the pollutant of the final exhaust gas discharged from the chimney to the atmosphere in real time, and also installed the PH analyzer 126 in the wet washing tower 121 In addition, it is possible to contribute to the prevention of air pollution through effective and efficient treatment of the exhaust gas due to the automatic control of caustic soda input in conjunction with this.

도 1 은 본 발명에 따른 장치 시스템에 대한 구성도
도 2 는 여과집진기(120) 내에 설치되는 여과포(167)의 구성에 대한 것을 설명하기 위한 도면1 is a block diagram of an apparatus system according to the present invention;
2 is a view for explaining the configuration of the filter cloth 167 installed in the bag filter 120

이하, 본 발명을 첨부 도면에 의가 추가로 상술한다Hereinafter, the present invention will be further described in detail with the accompanying drawings.

본 발명은 도 1 에서 보듯이, 보일러(110)에서 나오는 배기가스는 여과집진기(120)를 거쳐 습식세정탑(121)으로 들어가 세정 처리 후 배기되는데, 습식세정탑(121) 입구에서 SOx 의 농도가 100ppm 이 넘지 않토록 하고, 여과집진기(120)에서의 여과속도는 유량으로는 0.8m3/m2·min 이하, 바람직하기로는 0.8 내지 0.5m3/m2·min 정도 되게 하고, 유속으로는 0.8m/sec 이하로, 바람직하기로는 0.8 내지 0.5m/sec 하여 미스트 제거 효과를 극대화한다. 상기한 범위 이상이 되면 뿌연 미스트가 발생하고 지나치제 유속이 느리면 배기가스 처리 효율이 떨어지고 응결이 발생할 수 있다In the present invention, as shown in Figure 1, the exhaust gas from the boiler 110 enters the wet washing tower 121 through the bag filter 120, and is exhausted after the cleaning process, the concentration of SOx at the inlet of the wet washing tower 121 Is not more than 100 ppm, and the filtration speed in the bag filter 120 is 0.8 m 3 / m 2 · min or less in flow rate, preferably 0.8 to 0.5 m 3 / m 2 · min, and at a flow rate Is 0.8 m / sec or less, preferably 0.8 to 0.5 m / sec to maximize the mist removal effect. If it is more than the above-mentioned range, cloudy mist is generated, and if the excess flow rate is slow, the exhaust gas treatment efficiency may decrease and condensation may occur.

습식세정탑(121)에서의 SOx 의 농도 조절은 습식세정탑(121)에 설치되는 TMS에 의하여 조절 가능하다. 즉 TMS의 배기가스 오염 정도의 측정에 따라 이와 연계하여 활성탄 및 소석회의 투입량 조절이 가능하기 때문이다The concentration control of SOx in the wet washing tower 121 can be adjusted by TMS installed in the wet washing tower 121. In other words, it is possible to adjust the amount of activated carbon and slaked lime in connection with the measurement of the pollution level of exhaust gas of TMS.

보일러(110)에서의 연소시 연소연도는 섭씨 850 이상 바람직하게는 섭씨 850 내지 1200도 정도까지 되게 하고 가스의 체류시간은 전체 2초 이상이 되게 하여 독성물질의 완전 연소가 되게 한다. 그리고 보일러 내 연소시 일산화탄소 농도는 50PPM 이하가 되도록 운전하기 위하여는 산소 농도가 12% 정도 되게 안정되게 운전하여야 한다The combustion year during combustion in the boiler 110 is at least 850 degrees Celsius, preferably 850 to 1200 degrees Celsius, and the residence time of the gas is at least 2 seconds in total to allow complete combustion of toxic substances. In order to operate the carbon monoxide concentration below 50PPM during combustion in the boiler, the oxygen concentration should be operated stably with 12% oxygen concentration.

보일러(110) 배기 가스 출구에는 냉각장치(127)에 의한 냉각수단을 구비하여 배기가스를 섭씨 200도 이하로, 예를 들어 섭씨 180도 내지 200도 정도로 급냉시킴과 아울러 신속히 배출시켜서 다이옥신 등의 오염물질의 재합성을 최소화하고 보일러 전열면에서의 분진 부착을 억제한다The exhaust gas outlet of the boiler 110 is equipped with cooling means by the cooling device 127 to rapidly cool the exhaust gas to 200 degrees Celsius or less, for example, 180 to 200 degrees Celsius, and quickly discharge it to contaminate dioxin and the like. Minimizes resynthesis of materials and suppresses dust adhesion on the boiler's heat transfer surfaces

여과집진기(120)에는 활성탄저장조(122)에서 활성탄공급팬(128)에 의하여 활성탄이 공급되어 보일러의 배기가스에 잔류하는 다이옥신을 제거한다The filter dust collector 120 is supplied with activated carbon by the activated carbon supply fan 128 from the activated carbon storage tank 122 to remove dioxins remaining in the exhaust gas of the boiler.

그리고 여과집진기(120)는 도 2 에서 보듯이, 원통형의 여과집진기(120)의 형상으로 둥글게 말아진 여과포(167)가 설치되어 있어 배기가스가 둥글게 감아진 여과포(167) 안으로 통과하면서 여과포(167) 외주에 중금속과 먼지가 제거된다. 여과포(167) 외면에는 활성탄저장조(122)에서 투입된 활성탄(165)과 소석회저장조(125)에서 공급된 소석회(166)가 먼지(169) 및 중금속(170)과 엉켜붙어 여과포 케이크층(168)이 형성된다. 상기 여과포(167)는 교체 가능하며, 재질은 글라스 파이버와 PTFE 멤브레인 구성의 재질로 구성되어 고온에 대한 내열성, 내알카리, 내산성이 우수하다As shown in FIG. 2, the filter bag 120 is provided with a filter cloth 167 that is rolled up in the shape of a cylindrical filter bag 120, and passes through the filter cloth 167 in which the exhaust gas is rolled up. ) Heavy metals and dust are removed on the outer circumference. On the outer surface of the filter cloth 167, the activated carbon 165 introduced from the activated carbon storage tank 122 and the slaked lime 166 supplied from the slaked lime storage tank 125 are entangled with the dust 169 and the heavy metal 170 so that the filter cloth cake layer 168 is formed. Is formed. The filter cloth 167 is replaceable, the material is made of a glass fiber and PTFE membrane material is excellent in heat resistance, alkali resistance, acid resistance to high temperature

그 외 불소화합물, 브롬화합물 염소 등도 소석회의 투입에 의해 여과집진기에서 제거 가능하고 2차로 여과집진기(120) 외표면에 형성된 비산 먼지(169), 소석회(166), 활성탄(165) 여과층에 의하여 흡착 및 포집제거된다In addition, fluorine compounds, bromine compounds, chlorine, and the like can also be removed from the bag filter by the introduction of slaked lime, and are formed by the filtration layer scattering dust (169), slaked lime (166), and activated carbon (165) formed on the outer surface of the bag filter (120). Adsorption and desorption

한편 시안화합물이나 벤젠화합물 그리로 페놀, 암모니아는 보일러(110)의 연소실에서 섭씨 850도 이상에서 분해 제거되고 2 차로 습식세정탑(121)에서 제거된다. 그리고 납, 카드늄, 수은 등의 중금속은 보일러(110)의 연소 과정에서 분리되며 연소 가스 중에 포함된 기체 상태의 중금속은 섭씨 195도로 냉각 응축시 포집처리된다Meanwhile, cyanide compounds, benzene compounds, phenols, and ammonia are decomposed and removed at 850 degrees Celsius or more in the combustion chamber of the boiler 110 and are secondly removed from the wet washing tower 121. In addition, heavy metals such as lead, cadmium, and mercury are separated during the combustion process of the boiler 110, and the heavy metals in the gas state contained in the combustion gas are collected during cooling and condensation at 195 degrees Celsius.

그리고 비응축 기체상태의 중금속은 다공성의 활성탄에 의해 흡착 제거된 후 건식 반응 여과집진기(120)에서 포집되어 제거되며, 기체성 수은을 제외한 중금속은 여과집진기(120)에서 99.99% 이상 활성탄 흡착에 의해 제거되며 나머지는 그 뒤에 설치된 습식세정탑(121)에서 제거된다The heavy metal in the non-condensable gas state is adsorbed and removed by the porous activated carbon and then collected and removed in the dry reaction filter dust collector 120, and the heavy metals except gaseous mercury are absorbed by the activated carbon adsorption in the filter dust collector 120 by 99.99% or more. The rest is removed from the wet washing tower 121 installed behind it.

그리고 여과집진기(120)의 하부호퍼(161)에서 소석회와 염산가스의 반응으로 염화칼슘의 융착이 없도록 섭씨 130도 이상 바람직하기로는 섭씨 130 내지 200도 정도의 온도 조건에서 운전하여야 한다In addition, the lower hopper 161 of the bag filter 120 should be operated at a temperature of 130 degrees Celsius or more, preferably 130 to 200 degrees Celsius, so that calcium chloride is not fused by the reaction of slaked lime and hydrochloric acid gas.

그리고 소석회혼합은 건식 소석회 혼합기를 설치하여 소석회공급팬(129)의 작동으로 소석회가 공급되며, 소석회 투입 노즐(162)이 보일러배관(164)에 구성되어 소석회를 분말로 비산시켜주어 반응 효율을 높이도록 한다. 즉, 보일러(110)의 배기 가스 배출 방향으로 노즐(162)을 향하게 하여 분사시킨다
And the hydrated lime mixture is installed by the dry hydrated lime mixer, the hydrated lime is supplied by the operation of the hydrated lime feed fan 129, the hydrated lime injection nozzle 162 is configured in the boiler pipe 164 to increase the efficiency of the reaction by scattering the hydrated lime into powder To do that. That is, the nozzle 110 is injected toward the nozzle 162 in the exhaust gas discharge direction of the boiler 110.

상기한 소석회와 활성탄의 투입량 조절은 굴뚝에서 대기로 배기되는 최종 배출 가스의 오염물질의 농도를 실시간으로 측정하는 TMS(이하, 티엠에스라 한다)에서 정보를 받아 자동 조절되게 구성한다The input amount of slaked lime and activated carbon is automatically controlled by receiving information from TMS (hereinafter referred to as TMS) which measures the concentration of pollutants in the final exhaust gas discharged from the chimney to the atmosphere in real time.

티엠에스의 염산가스 분석기와 연동하여 소석회 투입량을 조절하여 배기가스 오염농도 배출치를 일정하게 제어하며, 또한 습식세정탑(121)에는 PH분석기를 설치하여 이와 연동하여 가성소다 투입량을 자동조절한다In conjunction with TMS hydrochloric acid gas analyzer to adjust the input amount of slaked lime to constantly control the exhaust gas pollutant concentration emission value, and also installed the PH analyzer in the wet washing tower 121 to automatically adjust the caustic soda input in conjunction with this.

그리고 습식세정탑(121)의 입구온도는 섭씨 168 내지 188(적정온도는 178도) 정도의 연소가스를 섭씨 40 내지 50도 바람직하기로는 45도 내외로 급냉시켜, 즉 감습 영역까지 냉각시켜 습도를 제거하도록 한다. 이를 위하여 습식세정탑(121)의 하부에 세정수 순환펌프(124)를 습식세정탑 하부에 설치하여 세정수를 순환시켜 냉각 효율과 배기가스의 세정 효율을 높이도록 한다In addition, the inlet temperature of the wet scrubber 121 is about 168 to 188 degrees Celsius (suitable temperature is 178 degrees) to cool the combustion gas to about 40 to 50 degrees Celsius, preferably around 45 degrees, that is, to the humidity zone by cooling the humidity. Remove it. To this end, the washing water circulation pump 124 is installed at the lower portion of the wet washing tower 121 to circulate the washing water to increase the cooling efficiency and the cleaning efficiency of the exhaust gas.

이상과 같은 처리 방법과 시스템에 의하면 매우 효율적인 배기가스 처리가 가능하다
According to the above treatment methods and systems, highly efficient exhaust gas treatment is possible.

110 보일러 120 여과집진기
121 습식세정탑 122 활성탄저장조
125 소석회저장조 126 PH분석기
127 냉각장치 164 보일러 배관
167 여과포
110 boiler 120 filter dust collector
121 Wet Cleaning Tower 122 Activated Carbon Storage Tank
125 Slaked lime storage tank 126 PH analyzer
127 Chiller 164 Boiler Tubing
167 filter cloth

Claims (3)

보일러(110)의 연소 가스를 여과집진기(120) 및 습식세정탑(121)을 거쳐 배기 처리하는 보일러 배기가스 처리 방법에 있어서,
보일러(110)에서의 연소시 연소연도는 섭씨 850 내지 1200도가 되게하고, 가스의 체류시간은 전체 2초 이상이 되게 하여 완전 연소가 되게 하며,
보일러(110) 내 연소시 일산화탄소 농도는 50PPM 이하가 되도록 운전하기 위하여는 산소 농도가 12% 되게 운전하며 보일러 배기가스 출구 온도는 섭씨 180도 내지 200도가 되게 하고,
여과집진기(120)에서의 여과속도는 유량으로는 0.8 내지 0.5m3/m2·min 가 되게 하고, 유속은 0.8 내지 0.5m/sec 로 하여 미스트 제거 효과를 높이며,
그리고 여과집진기(120)의 하부호퍼(161)에서 소석회와 염산가스의 반응으로 염화칼슘의 융착이 없도록 섭씨 130도 내지 200도 온도 조건에서 운전하고,
습식세정탑(121) 입구에서 온도를 섭씨 40-50 도 내외로 급냉시켜, 감습 영역까지 냉각시켜 습도를 제거하도록 하는 것을 특징으로 하는 보일러 연소가스 처리 방법In the boiler exhaust gas treatment method for exhausting the combustion gas of the boiler 110 through the bag filter 120 and the wet cleaning tower 121,
The combustion year during combustion in the boiler 110 is to be 850 to 1200 degrees Celsius, the residence time of the gas is to be at least 2 seconds in total to be a complete combustion,
In order to operate the carbon monoxide concentration during combustion in the boiler 110 to be less than 50PPM, the oxygen concentration is driven to 12% and the boiler exhaust gas outlet temperature is 180 to 200 degrees Celsius,
The filtration rate in the bag filter 120 is 0.8 to 0.5 m 3 / m 2 · min as the flow rate, the flow rate is 0.8 to 0.5 m / sec to increase the mist removal effect,
And in the lower hopper 161 of the bag filter 120 to operate at a temperature of 130 degrees Celsius to 200 degrees Celsius so that there is no fusion of calcium chloride by the reaction of slaked lime and hydrochloric acid gas,
Boiler flue gas treatment method characterized in that to cool the temperature around 40-50 degrees Celsius at the inlet of the wet washing tower 121, to cool to the humidity zone to remove the humidity 제 1 항에 있어서,
보일러(110) 배기 가스 출구에는 냉각장치(127)에 의한 냉각수단을 구비하여 배기가스를 급냉시켜 배출하여, 다이옥신 등의 오염물질의 재합성을 최소화하고 보일러 전열면에서의 분진 부착을 억제하도록 한 것을 특징으로 하는 보일러 연소가스 처리방법The method of claim 1,
The exhaust gas outlet of the boiler 110 is provided with a cooling means by the cooling device 127 to quench and exhaust the exhaust gas, thereby minimizing resynthesis of contaminants such as dioxins and suppressing dust adhesion on the boiler heat transfer surface. Boiler combustion gas treatment method characterized in that 보일러(110)와, 보일러의 연소 가스 처리를 위한 여과집진기(120)와, 상기한 여과집진기(120)로 활성탄과 소석회를 공급하기 위하여 설치하는 활성탄공급팬(128) 및 활성탄저장조(122) 그리고 소석회공급팬(129) 및 소석회저장조(125)와, 여과집진기를 거쳐 나온 배가스를 세정 공급수(123)에 의한 세정으로 습식처리하는 습식세정탑(121)과, 습식세정탑에 설치되고, 세정수를 순환시키는 습식세정탑순환펌프(124)를 포함하며,
상기한 여과집진기(120)에는 여과포(167)가 원통상으로 설치되어, 여과포 외주에서 내부로 배기가스가 통과하여 여과되도록 구성하고,
보일러(110)와 여과집진기(120) 사이에 설치되는 보일러배관(164)에는 상기한 소석회저장조(125)에서의 소석회 공급을 위한 노즐(162)이 설치되어, 분사에 의하여 소석회분말을 공급하도록 구성하고,
상기한 소석회와 활성탄의 투입량 조절은 굴뚝에서 대기로 배기되는 최종 배출 가스의 오염물질의 농도를 실시간으로 측정하는 TMS에서 정보를 받아 자동 조절되게 구성하고,
또한 습식세정탑(121)에는 PH분석기(126)를 설치하여, 이와 연동하여 가성소다 투입량을 자동조절하도록 구성한 것을 특징으로 하는 보일러 연소가스 처리 장치. Boiler 110, the filter dust collector 120 for treating the combustion gas of the boiler, the activated carbon supply fan 128 and activated carbon storage tank 122 is installed to supply activated carbon and slaked lime to the filter dust collector 120 and It is installed in a wet cleaning tower (129) and a lime cleaning tank (125), a wet washing tower (121) for wet-processing the exhaust gas passing through the bag filter by washing with the supply water (123), and a wet cleaning tower. A wet scrubber circulating pump 124 for circulating water,
In the filter bag 120, a filter cloth 167 is provided in a cylindrical shape, and configured to filter the exhaust gas through the filter circumference from the outer circumference.
The boiler pipe 164 installed between the boiler 110 and the bag filter 120 is provided with a nozzle 162 for supplying slaked lime from the slaked lime storage tank 125 to supply the slaked lime powder by spraying. and,
The input amount of slaked lime and activated carbon is controlled to be automatically adjusted by receiving information from TMS which measures the concentration of pollutants in the final exhaust gas discharged from the chimney to the atmosphere in real time.
In addition, the wet scrubber tower 121 is equipped with a PH analyzer 126, the boiler combustion gas treatment device, characterized in that configured to automatically adjust the amount of caustic soda in conjunction with this.
KR1020110005633A 2011-01-19 2011-01-19 Waste gas treating method of bolier and its apparatus KR101329000B1 (en)

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KR100341187B1 (en) 1996-12-06 2002-08-22 닛폰 고칸 가부시키가이샤 Burning apparatus and method for restricting the occurrence of dioxins
JP2003126654A (en) 2001-10-19 2003-05-07 Sumitomo Heavy Ind Ltd Flue gas treatment apparatus
KR200423884Y1 (en) 2006-05-22 2006-08-11 지이큐솔루션 주식회사 Processing system for exhaust gas of incinerator
JP2010221150A (en) 2009-03-24 2010-10-07 Kurita Water Ind Ltd Method and apparatus for treatment of combustion exhaust gas

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Publication number Priority date Publication date Assignee Title
KR100341187B1 (en) 1996-12-06 2002-08-22 닛폰 고칸 가부시키가이샤 Burning apparatus and method for restricting the occurrence of dioxins
JP2003126654A (en) 2001-10-19 2003-05-07 Sumitomo Heavy Ind Ltd Flue gas treatment apparatus
KR200423884Y1 (en) 2006-05-22 2006-08-11 지이큐솔루션 주식회사 Processing system for exhaust gas of incinerator
JP2010221150A (en) 2009-03-24 2010-10-07 Kurita Water Ind Ltd Method and apparatus for treatment of combustion exhaust gas

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