WO2011036940A1 - 蓄熱燃焼式排ガス浄化システムおよびその運転方法 - Google Patents

蓄熱燃焼式排ガス浄化システムおよびその運転方法 Download PDF

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Publication number
WO2011036940A1
WO2011036940A1 PCT/JP2010/062504 JP2010062504W WO2011036940A1 WO 2011036940 A1 WO2011036940 A1 WO 2011036940A1 JP 2010062504 W JP2010062504 W JP 2010062504W WO 2011036940 A1 WO2011036940 A1 WO 2011036940A1
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WO
WIPO (PCT)
Prior art keywords
exhaust gas
heat storage
damper
duct
gas purification
Prior art date
Application number
PCT/JP2010/062504
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English (en)
French (fr)
Japanese (ja)
Inventor
智弘 鳥田
Original Assignee
新東工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 新東工業株式会社 filed Critical 新東工業株式会社
Priority to JP2011532933A priority Critical patent/JP5344043B2/ja
Priority to CN201080041817.3A priority patent/CN102498345B/zh
Publication of WO2011036940A1 publication Critical patent/WO2011036940A1/ja

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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
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
    • 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
    • F23G2900/70601—Temporary storage means, e.g. buffers for accumulating fumes or gases, between treatment stages

Definitions

  • the present invention relates to a regenerative thermal exhaust gas purification device (hereinafter abbreviated as RTO) and a regenerative thermal exhaust gas purification system comprising a suction duct device for reducing static pressure fluctuations corresponding to air flow fluctuations during operation, and It relates to the driving method. More specifically, the exhaust fan connected to the gas exhaust production facility and the regenerative combustion exhaust gas purification device RTO so as not to affect the production facility that is the source of exhaust gas when the static pressure fluctuation of the suction duct when switching the damper of the RTO is given.
  • RTO regenerative thermal exhaust gas purification device
  • the present invention relates to a regenerative combustion exhaust gas purification system including a suction duct device that can reduce the influence of pressure fluctuations and can be adapted to fluctuations in exhaust airflow of production facilities, and an operation method thereof.
  • the present invention also relates to a heat storage combustion exhaust gas purification system further including an exhaust gas supply / discharge device that prevents a decrease in pressure loss due to RTO, and an operation method thereof.
  • the present invention relates to a heat storage combustion exhaust gas purification system further comprising an exhaust gas supply / discharge device for reducing the thermal load of the RTO and preventing damage to the heat storage body.
  • VOC volatile organic compounds
  • a duct for introducing air may be disposed in the exhaust gas flow path from the production facility to the RTO.
  • a damper for blocking the introduction of exhaust gas and a damper for blocking open air for example, open air damper
  • An air release duct for reducing static pressure fluctuation that occurs when switching an RTO damper, an exhaust fan connected to a gas exhaust production facility, and a regenerative exhaust gas purification system Based on the static pressure data from the differential pressure transmitter of the suction duct connecting between the production facility and the RTO, installed between the air opening duct installed in the suction duct connecting the device RTO blower and the RTO blower. Adjust the air inflow from the open air duct installed in the suction duct by opening the control damper or operating the RTO blower operation inverter, and operate the RTO with an appropriate air flow even if the exhaust gas flow from the production facility changes. It is an object of the present invention to provide a heat storage combustion type exhaust gas purification system that can be used and an operation method thereof.
  • a regenerative combustion exhaust gas purification system and an operation method thereof provide an exhaust duct that connects an open air duct that reduces static pressure fluctuations that occur when switching an RTO damper to an exhaust gas production facility.
  • Installed in the suction duct that connects the blower and the RTO blower for the regenerative exhaust gas purification device RTO and is equipped with a differential pressure transmitter that controls the control damper or the blower inverter for suction to adjust the static pressure of the open air duct to a constant level.
  • the RTO is operated with a suction air flow appropriate for the air flow.
  • the present invention provides a differential pressure transmission for controlling a control damper or a suction blower inverter by installing an air release duct in a suction duct connecting a blower for exhaust connected to a gas emission production facility and a blower for an RTO exhaust gas purification apparatus RTO.
  • RTO exhaust gas purification apparatus
  • FIG. 1 is a schematic configuration diagram of an exhaust gas treatment device showing an embodiment of an RTO and an exhaust gas supply / exhaust device according to the present invention. It is a block diagram (the 1) of the heat storage combustion type exhaust gas purification system by the conventional system provided with the open air damper. It is a block diagram (the 2) of the thermal storage combustion type exhaust gas purification system by the conventional system provided with the open air damper.
  • the control dampers 5 and 25 are fully opened to adjust the suction airflow as a whole, thereby minimizing the pressure loss of the suction duct.
  • the static pressure in the air opening ducts 2 and 22 of each line is measured by the differential pressure transmitters 3 and 23, and the static pressure value is -0.05 to ⁇ 0.00 kPa (setting) with respect to the change in the air volume of the exhaust gas. Automatically adjusted by the control dampers 5 and 25 so as to become (value). From the above, it is possible to mitigate the influence of the static pressure fluctuation caused by the RTO damper on the production equipment.
  • the inside of the suction duct is adjusted to a negative pressure. This can prevent emission of exhaust gas to the atmosphere.
  • the inside of the suction duct is controlled to a negative pressure, there is an introduction of outside air from the atmosphere opening part, so the exhaust gas concentration is reduced, but the effect is slight, and compared with the problem that the exhaust gas is released to the atmosphere, Some dilution is considered acceptable.
  • an air opening duct that is always open to the atmosphere on the secondary exhaust side of the exhaust fan 1. 2 is installed.
  • the frequency of the RTO blower 4 is automatically adjusted by the inverter 6 so that the static pressure value becomes ⁇ 0.05 to ⁇ 0.00 kPa (set value) with respect to the change in the air volume of the exhaust gas from the production facility A.
  • an exhaust gas supply / discharge device that communicates the suction duct device and the RTO and exhausts the treated exhaust gas from the RTO will be described.
  • RTO that has a plurality of heat storage chambers and burns exhaust gas containing flammable harmful components such as volatile organic compounds
  • An exhaust gas supply / discharge device having a plurality of poppet type dampers is provided at each of the outlets from the outlet, and the exhaust gas is supplied and discharged by opening and closing the poppet type dampers.
  • the poppet damper on the supply side and the poppet damper on the discharge side are in an “open” state at the same time, but instantaneously.
  • the pressure loss due to the RTO decreases and the amount of exhaust gas supplied to the RTO increases, and as a result, the regenerative combustion including ducts for supplying exhaust gas to the RTO and RTO, and exhaust gas exhausting from the RTO, etc. May cause a static pressure fluctuation in the exhaust gas purification system. This static pressure fluctuation can affect production equipment.
  • the exhaust gas recirculation means 33 is provided in the supply / discharge means 32.
  • the supply / discharge means 32 supplies and discharges the exhaust gas to / from the RTO by opening and closing a plurality of poppet type dampers 37, 38, 39, and 40 provided on the exhaust gas supply side and the discharge side of the RTO, respectively.
  • the exhaust gas recirculation means 33 is configured to detect the discharge side poppet damper 39 when the pressure loss due to RTO is reduced by opening at least two poppet dampers among the plurality of poppet dampers 37, 38, 39, 40 almost simultaneously. , 40, a part of the treated exhaust gas is sent to the suction side of the RTO blower 4 disposed on the RTO exhaust gas supply side.
  • the suction port of the RTO blower 4 is connected to the tip of the suction duct 34 communicating with the exhaust gas generators A1 and A2 (see FIG. 1) that generate exhaust gas.
  • One end of the untreated exhaust gas supply duct 36 is connected to the discharge port of the blower 4.
  • the other end of the untreated exhaust gas supply duct 36 is connected to an RTO exhaust gas supply port via two poppet dampers 37 and 38, respectively, and two poppet dampers are connected to the treated exhaust gas exhaust port of the RTO.
  • Exhaust ducts 42 are connected via 39 and 40 and the treated exhaust gas exhaust duct 41.
  • the suction duct 34 is equipped with a pressure transmitter 43, and the untreated exhaust gas supply duct 36 is fitted with an orifice flow meter 51 having a differential pressure transmitter 44, and the electric motor of the RTO blower 4.
  • the inverter 46 mounted on 45, the pressure transmitter 43 and the differential pressure transmitter 44 are electrically connected to each other via a controller 47.
  • a duct 49 provided with a flow rate adjusting damper 48 is connected in communication between the suction duct 34 and the treated exhaust gas exhaust duct 41, and the positioner 50 of the flow rate adjusting damper 48 is electrically connected to the controller 47. Connected.
  • untreated exhaust gas is guided to the suction duct 34, pressurized by the RTO blower 4 and sent to the untreated exhaust gas supply duct 36, and a plurality of poppet dampers 37 to 40 are interlocked.
  • the exhaust gas is supplied to and discharged from the RTO and a predetermined process is performed. Then, based on the pressure in the suction duct 34 measured by the pressure transmitter 43 and the differential pressure of the orifice flow meter 51 measured by the differential pressure transmitter 44, the opening degree of the flow rate adjustment damper 48 is adjusted via the controller 47.
  • Table 1 shows the processing air volume: 100 m 3 / min (at 0 ° C., 101.3 kPa), toluene concentration: 0,500, 1500, 3000, 5000 ppm (toluene spontaneous combustion start concentration: 500 ppm), apparatus inlet gas temperature: In the case of 20 degreeC, the result of having calculated the combustion chamber temperature and the RTO exit gas temperature is shown. According to Table 1, it can be seen that the higher the toluene concentration, the more combustion heat is generated and the combustion chamber temperature and the RTO outlet gas temperature increase.
  • the heat storage body When the heat storage body is exposed to an excessively high temperature, the heat load applied to the heat storage body increases as described above, and the heat storage body may be cracked or cracked.
  • FIG. 4 shows another embodiment of the RTO and the exhaust gas supply / exhaust device.
  • the RTO shown in FIG. 4 includes heat storage chambers 61 a, 62 a, and 63 a disposed therein and parallelly configured heat storage chambers 61, 62, and 63, and the upper portions of the heat storage chambers 61, 62, and 63 are common.
  • the combustion chamber 64 is connected in communication.
  • the downward direction of the thermal storage body 61a, 62a, 63a, each inlet (supply side) damper 65, 66, 67, and each outlet (discharge side) damper 68, 69, 70 are connected in communication, respectively.
  • each of the inlet dampers 65, 66, 67 is connected to the untreated exhaust gas supply duct 36
  • each of the outlet dampers 68, 69, 70 is connected to the treated exhaust gas exhaust duct 41.
  • a fresh air introduction damper 71 is connected to the upstream position of the inlet damper 65 in the untreated exhaust gas supply duct 36 and the upstream position of the inlet damper 65 in the untreated exhaust gas supply duct 36 and the combustion chamber. 64 is connected in communication via a cold bypass damper 72.
  • the connection position of the cold bypass damper 72 is between the connection position of the inlet damper 65 and the connection position of the fresh air introduction damper 71 in the untreated exhaust gas supply duct 36.
  • the connection position of the cold bypass damper 72 is not limited to this, and may be upstream of the connection position of the fresh air introduction damper 71.
  • the fresh air in the present invention refers to, for example, the atmosphere in the outdoors or in the factory, and includes the above-mentioned atmosphere through a coarse dust filter or the like.
  • the cold bypass damper refers to a damper for introducing exhaust gas directly into the combustion chamber without passing through the heat storage chamber.
  • any of the dampers shown in FIG. 4 may be a poppet type damper.
  • a burner 74 is installed as a combustion chamber temperature maintaining means used for maintaining the temperature of the combustion chamber 64.
  • the hot bypass damper refers to a damper for exhausting the treated exhaust gas that has been decomposed by combustion from the combustion chamber and discarding the excess heat amount without storing heat in the heat storage body.
  • the burner 74 keeps the temperature of the combustion chamber 64 at a temperature required for decomposition of the target component (a temperature 200 to 300 ° C. higher than the target component ignition point temperature), and the fresh air introduction damper 71, the core The cold bypass damper 72 and the hot bypass damper 73 are all closed.
  • the exhaust gas containing a component such as a volatile organic compound supplied from the untreated exhaust gas supply duct 36 is “inlet damper 65 is opened, outlet damper 69 is opened, other inlet dampers 66 and 67 and outlet dampers 68 and 70 are closed. ”Is introduced into the heat storage chamber 61 through the inlet damper 65, preheated when passing through the heat storage body 61 a, and burned and decomposed in the combustion chamber 64. The exhaust gas purified by the combustion decomposition is subjected to heat exchange when passing through the heat storage body 62 a of the heat storage chamber 62, and then exhausted from the treated exhaust gas exhaust duct 41 through the outlet damper 69.
  • the state is switched to a state of “opening inlet damper 66, opening outlet damper 70, closing other inlet dampers 65 and 67 and outlet dampers 68 and 69”.
  • the exhaust gas passes through the inlet damper 66 and the outlet damper 70 and is processed and exhausted in the same manner as described above.
  • the state is switched to the state of “opening inlet damper 67, opening outlet damper 68, closing other inlet dampers 65, 66 and outlet dampers 69, 70”.
  • the exhaust gas passes through the inlet damper 67 and the outlet damper 68 and is processed and exhausted in the same manner as described above.
  • the state is switched to the first "inlet damper 65 open, outlet damper 69 open, other inlet dampers 66 and 67 and outlet dampers 68 and 70 closed", and the above operation is repeated.
  • the temperature in the combustion chamber 64 is maintained at the holding temperature (200 to 300 ° C. from the target component ignition point temperature). Expected to be higher).
  • the burner 74 is first stopped during the operation of the apparatus. Then, the hot bypass damper 73 is opened, and a part of the purified exhaust gas is exhausted from the combustion chamber 64 to discard the surplus heat amount without accumulating heat in the heat accumulators 61a, 62a, 63a, and the fresh air-introducing damper 71 is disposed. Then, the component concentration in the supplied exhaust gas is diluted with fresh air so that the temperature in the combustion chamber 64 does not rise too much. Usually, the heat load applied to the heat storage elements 61a, 62a, and 63a is reduced in this way.
  • the burner 74 is stopped and the hot bypass damper 73 and the fresh air introduction damper 71 are opened to burn.
  • the temperature in the chamber 64 may exceed the heat resistance temperature of the heat storage bodies 61a, 62a, 63a.
  • the cold bypass damper 72 is opened, and a part of the exhaust gas is directly passed through the heat storage chambers 61, 62, 63.
  • the hot bypass damper 73 is opened, and a portion of the purified exhaust gas is exhausted from the combustion chamber 64 to discard excess heat.
  • the fresh air introduction damper 71 is closed in principle. This is because the exhaust gas treatment amount is not reduced. However, if priority should be given to further lowering the temperature in the combustion chamber 64, the fresh air introduction damper 71 may be opened to dilute the component concentration in the supplied exhaust gas with fresh air. . Further, the direct introduction of the exhaust gas into the combustion chamber 64 may not be a part of the exhaust gas but the total amount of the exhaust gas. In this case, all of the inlet dampers 65, 66, and 67 are closed.
  • a part of the exhaust gas purified from the combustion chamber 64 is exhausted by opening the hot bypass damper 73. Good.
  • the exit dampers 68, 69, 70 are all closed.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Treating Waste Gases (AREA)
PCT/JP2010/062504 2009-09-22 2010-07-26 蓄熱燃焼式排ガス浄化システムおよびその運転方法 WO2011036940A1 (ja)

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Application Number Priority Date Filing Date Title
JP2011532933A JP5344043B2 (ja) 2009-09-22 2010-07-26 蓄熱燃焼式排ガス浄化システムおよびその運転方法
CN201080041817.3A CN102498345B (zh) 2009-09-22 2010-07-26 蓄热燃烧式废气净化系统及其运转方法

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JP2009218251 2009-09-22
JP2009-218251 2009-09-22

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JPWO2013077079A1 (ja) * 2011-11-25 2015-04-27 新東工業株式会社 蓄熱式排ガス浄化装置
JP5946550B1 (ja) * 2015-02-10 2016-07-06 中外炉工業株式会社 蓄熱式ガス処理設備及び蓄熱式ガス処理設備の改良方法
CN106955568A (zh) * 2017-03-23 2017-07-18 苏州华光宝利印刷版材有限公司 一种ps版烘干生产线有机废气处理系统及处理工艺
JP2019027735A (ja) * 2017-08-02 2019-02-21 啓治 古川 排気装置の排気ガスを有害物除去装置へ送る通気配管
CN111895425A (zh) * 2020-08-01 2020-11-06 山东齐鲁增塑剂股份有限公司 Rto异味集中回收处理系统
CN112303652A (zh) * 2020-06-28 2021-02-02 东莞智源彩印有限公司 凹印车间废气减风处理系统及处理方法
CN115111594A (zh) * 2022-07-08 2022-09-27 浙江大学 一种蓄热式热力氧化炉智能调控系统及方法
CN115388414A (zh) * 2022-08-26 2022-11-25 上海环境保护有限公司 一种蓄热式焚烧炉补新风系统及其控制方法
EP4249803A1 (en) * 2022-03-24 2023-09-27 John Zink KEU GmbH Regenerative thermal oxidizer, system comprising a regenerative thermal oxidizer and method of operating a regenerative thermal oxidizer

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CN103429960B (zh) * 2012-03-30 2016-01-06 新东工业株式会社 排气净化装置
CN104470620B (zh) * 2012-08-29 2017-02-22 新东工业株式会社 废气净化设备及其运转控制方法
CN104487153B (zh) * 2012-08-29 2017-02-22 新东工业株式会社 废气净化设备及其运转控制方法
JP6194950B2 (ja) 2013-03-25 2017-09-13 新東工業株式会社 蓄熱式排ガス浄化装置
CN106731280A (zh) * 2017-03-09 2017-05-31 上海兰宝环保科技有限公司 适合多工况的节能型废气氧化处理系统
KR101785486B1 (ko) * 2017-08-10 2017-10-17 (주)케이에스지기술환경 실린더 구동식 축열연소 산화처리장치
CN108916895B (zh) * 2018-07-20 2020-01-10 江苏鸿捷环保设备有限公司 一种rto余热回收储蓄设备
CN109731880A (zh) * 2019-01-18 2019-05-10 力同环保机械（上海）有限公司 用于铝涂装生产线排风至rto的自动控制装置及方法

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JPWO2013077079A1 (ja) * 2011-11-25 2015-04-27 新東工業株式会社 蓄熱式排ガス浄化装置
JP5946550B1 (ja) * 2015-02-10 2016-07-06 中外炉工業株式会社 蓄熱式ガス処理設備及び蓄熱式ガス処理設備の改良方法
CN106955568A (zh) * 2017-03-23 2017-07-18 苏州华光宝利印刷版材有限公司 一种ps版烘干生产线有机废气处理系统及处理工艺
JP2019027735A (ja) * 2017-08-02 2019-02-21 啓治 古川 排気装置の排気ガスを有害物除去装置へ送る通気配管
CN112303652A (zh) * 2020-06-28 2021-02-02 东莞智源彩印有限公司 凹印车间废气减风处理系统及处理方法
CN111895425A (zh) * 2020-08-01 2020-11-06 山东齐鲁增塑剂股份有限公司 Rto异味集中回收处理系统
EP4249803A1 (en) * 2022-03-24 2023-09-27 John Zink KEU GmbH Regenerative thermal oxidizer, system comprising a regenerative thermal oxidizer and method of operating a regenerative thermal oxidizer
WO2023180820A1 (en) * 2022-03-24 2023-09-28 John Zink KEU GmbH Regenerative thermal oxidizer, system comprising a regenerative thermal oxidizer and method of operating a regenerative thermal oxidizer
CN115111594A (zh) * 2022-07-08 2022-09-27 浙江大学 一种蓄热式热力氧化炉智能调控系统及方法
CN115111594B (zh) * 2022-07-08 2024-05-14 浙江大学 一种蓄热式热力氧化炉智能调控系统及方法
CN115388414A (zh) * 2022-08-26 2022-11-25 上海环境保护有限公司 一种蓄热式焚烧炉补新风系统及其控制方法

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