WO2021128108A1 - Système de chauffage de filtre à manches pour centrale électrique d'incinération de déchets - Google Patents

Système de chauffage de filtre à manches pour centrale électrique d'incinération de déchets Download PDF

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Publication number
WO2021128108A1
WO2021128108A1 PCT/CN2019/128481 CN2019128481W WO2021128108A1 WO 2021128108 A1 WO2021128108 A1 WO 2021128108A1 CN 2019128481 W CN2019128481 W CN 2019128481W WO 2021128108 A1 WO2021128108 A1 WO 2021128108A1
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WO
WIPO (PCT)
Prior art keywords
pipe
bag filter
hot
air
shared
Prior art date
Application number
PCT/CN2019/128481
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English (en)
Chinese (zh)
Inventor
赵娜娜
Original Assignee
深圳市能源环保有限公司
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 深圳市能源环保有限公司 filed Critical 深圳市能源环保有限公司
Priority to PCT/CN2019/128481 priority Critical patent/WO2021128108A1/fr
Publication of WO2021128108A1 publication Critical patent/WO2021128108A1/fr

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    • 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
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof

Definitions

  • the invention relates to a flue gas waste heat recovery and utilization system, in particular to a heating system for a bag filter in a garbage incineration power plant.
  • the flue gas purification treatment system of the waste incineration plant is equipped with a semi-dry reaction tower, atomizer, bag filter, activated carbon, lime slurry and other systems.
  • the bag filter is one of the key equipment in the flue gas treatment system of waste incineration power plants.
  • the function of the bag filter has two aspects: First, it separates the dust and solid particles in the flue gas at the inlet, and then removes the dust at the outlet. Clean gas is discharged; secondly, the dust adhering to the filter bag contains lime slurry and activated carbon, so it can continue the neutralization reaction and absorb harmful substances in the dust.
  • the preheating cycle of the bag filter is an important part of it.
  • the main heater of the bag filter will preheat the middle box before the cold start, so that the temperature in the warehouse will be preheated from the ambient temperature within 8 hours.
  • the flue gas inlet and outlet doors are closed before the hot air circulation system of the bag filter is started, and the box of the bag filter is in a closed hot air self-circulation state. Only when this condition is met, the filter bag in the bag filter can achieve the best effect on the dust removal of the flue gas. At the same time, it can prevent the hot flue gas and the cold air in the dust collector from meeting and dew on the bag filter during the blowing process. hurt.
  • the main heater of the bag filter often failed, causing the temperature of the warehouse to fail to meet the requirements.
  • the present invention proposes a bag filter heating system for waste incineration power plants.
  • a shared hot smoke system is provided, and the shared hot smoke system includes a shared connecting pipe, and the inlet of the shared connecting pipe is passed through
  • Each outlet pipe is connected to the exhaust pipe of each air induction system, and the outlet of the shared communication pipe is connected to the suction pipe interface of the hot air self-circulation system of each bag filter through each branch pipe.
  • the hot smoke can be shared by the hot smoke system and the hot smoke of other air induction systems that are running can be used to remove the faulty bag dust.
  • the filter is heated to ensure that the malfunctioning bag filter can operate normally.
  • the technical solution proposed by the present invention is to provide a bag filter heating system for waste incineration power plants, including a bag filter, an induced air system, and a main heating circulation system.
  • the induced air system sequentially includes the airflow direction
  • the air inlet pipe, the induced draft fan, the exhaust pipe, the muffler and the induced air system are connected to the chimney pipe, the inlet pipe is connected to the bag filter, and the induced air system is connected to the chimney pipe to exhaust the flue gas to the chimney;
  • the main heating circulation system includes the suction pipe interface, the hot air suction pipe, the suction pipe valve, the hot air blower, the hot air exhaust pipe, the hot air system suction pipe and the one of the bag filter in the order of the airflow direction.
  • the interface is connected and air is sucked from it.
  • the hot air blower exhaust pipe is connected to the other interface of the bag filter and provides hot air to it.
  • the hot air blower continuously supplies hot air to the bag filter, It is characterized in that a shared hot smoke system is also provided, the shared hot smoke system includes a shared communication pipe, and the inlet of the shared communication pipe is connected to the exhaust pipes of each induced air system through each outlet pipe. The outlet is connected to the suction pipe interface of each main heating circulation system through each branch pipe.
  • a bag filter heating system for waste incineration power plants by setting a shared hot smoke system, and the shared hot smoke system includes a shared connecting pipe, the inlet of the shared connecting pipe is connected to each other through each outlet pipe The exhaust pipes of each induced air system are connected, and the outlet of the shared connecting pipe is connected to the suction pipe interface of the hot air self-circulation system of each bag filter through each branch pipe.
  • the hot smoke can be shared by the hot smoke system and the hot smoke of other air induction systems that are running can be used to remove the faulty bag dust.
  • the filter is heated to ensure that the malfunctioning bag filter can operate normally.
  • FIG. 1 to 3 are schematic diagrams of the system layout of an embodiment of the prior art. Among them, FIG. 1 is a front view, FIG. 2 is a top view, and FIG. 3 is an enlarged schematic diagram of a partial structure.
  • FIG. 4 and Fig. 6 are schematic diagrams of the system layout of the first embodiment of the present invention. Among them, FIG. 4 is a front view, FIG. 5 is a top view, and FIG. 6 is an enlarged schematic view of a partial structure.
  • 2A4 and No. 1 induced air systems are connected to the chimney pipe; 2B4 and No. 2 induced air systems are connected to the chimney pipe;
  • 3A No. 1 main heating circulation system
  • 3B No. 2 main heating circulation system
  • 3A No. 1 hot air blower
  • 3B No. 2 hot air blower
  • FIG. 1 to 3 are schematic diagrams of the system layout of an embodiment of the prior art.
  • FIG. 1 is a front view
  • FIG. 2 is a top view
  • FIG. 3 is an enlarged schematic diagram of a partial structure.
  • the figure shows that in the prior art, a bag filter heating system for waste incineration power plants includes No. 1 bag filter 1A, No. 2 bag filter 2B, No. 1 air induction system 2A, and No. 2 air induction system 2B , No. 1 main heating circulation system 3A, No. 2 main heating circulation system 3B.
  • No. 1 induced air system 2A includes No. 1 intake pipe 2A21, No. 1 induced draft fan 2A1, No. 1 exhaust pipe 2A22, No. 1 silencer 2A3, and No. 1 induced air system connected to chimney pipe 2A4 in order of airflow direction.
  • the air inlet pipe 2A21 is connected to the bag filter, and the air induction system is connected to the chimney pipe 2A4 to discharge the flue gas to the chimney.
  • the No. 1 main heating circulation system 3A includes No. 1 suction pipe interface 3A4, No. 1 hot air blower suction pipe 3A21, No. 1 suction pipe valve 3A3, No. 1 hot air blower 3A1, No. 1 hot air blower exhaust pipe in order of airflow direction 3A22, the No.
  • 1 hot air system suction pipe 3A21 is connected to an interface of the No. 1 bag filter and sucks air from it, and the No. 1 hot air blower exhaust pipe 3A22 is connected to the No. 1 bag filter.
  • the other interface is connected to and provides hot air to it, and the hot air is continuously supplied to the No. 1 bag filter via the No. 1 hot air blower 3A1.
  • No. 2 induced air system 2B includes No. 2 air inlet pipe 2B21, No. 2 induced draft fan 2B1, No. 2 exhaust pipe 2B22, No. 2 silencer 2B3, and No. 2 induced air system connected to chimney pipe 2B4 in order of airflow direction.
  • the air inlet pipe 2B21 is connected to the bag filter, and the air induction system is connected to the chimney pipe 2B4 to exhaust the flue gas to the chimney.
  • No. 2 main heating circulation system 3B includes No. 2 suction pipe interface 3B4, No. 2 hot air fan suction pipe 3B21, No. 2 suction pipe valve 3B3, No. 2 hot air fan 3B1, and No. 2 hot air exhaust pipe in order of airflow direction. 3B22, the No.
  • the figure shows that the main heater system of each bag filter of the garbage incineration system operates independently.
  • the flue gas inlet and outlet doors are closed before the hot air circulation system of the bag filter is started, and the box of the bag filter is in a closed hot air self-circulation state. Only when this condition is met, the filter bag in the bag filter can achieve the best effect on the dust removal of the flue gas, and at the same time, prevent the hot flue gas and the cold air in the dust collector from meeting and condensing to cause damage to the bag filter during the blowing process. .
  • the main heater of the bag filter often failed, causing the temperature of the warehouse to fail to meet the requirements.
  • the present invention suggests that in this example, only two bag filters and related systems are displayed, but in actual operation, the number of bag filters and related systems of the garbage incineration system exceeds two.
  • FIG. 4 is a front view
  • FIG. 5 is a top view
  • FIG. 6 is an enlarged schematic view of a partial structure.
  • the figure shows that, unlike the prior art, in this example, a bag filter heating system for waste incineration power plants is also provided with a shared hot smoke system 4, which includes a shared connecting pipe 4.1,
  • the inlet of the shared connecting pipe 4.1 is connected to the exhaust pipe 2A22 of the No. 1 induced air system 2A and the exhaust pipe 2B22 of the No. 2 induced air system 2B through the No. 1 outlet pipes 4A1 and the No. 2 outlet pipe 4B1, respectively.
  • the outlet of the connecting pipe 4.1 is connected to the No. 1 suction pipe interface 3A4 and the No. 2 suction pipe interface 3B4 via the No. 1 shunt pipes 4A3 and 4B3, respectively.
  • the figure shows that in this example, if the main heater of a certain bag filter often fails and the temperature of the warehouse cannot meet the requirements, the shared hot smoke system can be used to use other air induction systems that are running. The hot smoke heats the malfunctioning bag filter to ensure that the malfunctioning bag filter can operate normally.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chimneys And Flues (AREA)

Abstract

L'invention concerne un système de chauffage de filtre à manches pour une centrale électrique d'incinération de déchets, le système de chauffage de filtre à manches comprenant des filtres à manches (1A, 1B), des systèmes à tirage induit (2A, 2B) et des systèmes de circulation de chauffage principal (3A, 3B), les systèmes de tirage induit (2A, 2B) comprennent séquentiellement, dans une direction d'écoulement d'air, des tuyaux d'admission d'air (2A21, 2B21), des ventilateurs à tirage induit (2A1, 2B1), des tuyaux d'échappement (2A22, 2B22), des silenceurs (2A3, 2B3) et des tuyaux de raccordement de cheminée de système de tirage induit (2A4, 2B4), et les systèmes de circulation de chauffage principal (3A, 3B) comprennent séquentiellement, dans la direction d'écoulement d'air, des interfaces de tuyau d'aspiration (3A4, 3B4), des tuyaux d'aspiration de soufflante d'air chaud (3A21, 3B21), des soupapes de tuyau d'aspiration (3A3, 3B3), des soufflantes à air chaud (3A1, 3B1) et des tuyaux d'échappement de soufflante d'air chaud (3A22, 3B22). L'invention concerne un système de fumée chaude partagée. Le système de fumée chaude partagée (4) comprend un tuyau de communication partagé (4.1), une entrée du tuyau de communication partagée (4.1) est relié aux tuyaux d'échappement (2A22, 2B22)) des systèmes de tirage induit (2A, 2B) au moyen de tuyaux de sortie (4A1, 4B1), et une sortie du tuyau de communication partagée (4.1) est reliée respectivement aux interfaces de tuyau d'aspiration (3A4, 3B4) au moyen de tuyaux de dérivation (4A3, 4B3). Lorsque les éléments chauffants principaux des filtres à manches sont montés (1A, 1B) souvent en panne, les filtres à manches défaillants (1A, 1B) peut être chauffé à l'aide du système de fumée chaude partagée (4) et à l'aide de fumée chaude d'autres systèmes de tirage induit (2A, 2B) qui sont en fonctionnement, garantissant que les filtres à manches défaillants (1A, 1B) peuvent fonctionner normalement.
PCT/CN2019/128481 2019-12-25 2019-12-25 Système de chauffage de filtre à manches pour centrale électrique d'incinération de déchets WO2021128108A1 (fr)

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PCT/CN2019/128481 WO2021128108A1 (fr) 2019-12-25 2019-12-25 Système de chauffage de filtre à manches pour centrale électrique d'incinération de déchets

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146407A2 (fr) * 1983-12-17 1985-06-26 Tilghman Wheelabrator Limited Dispositif et procédé de traitement de particules, de gaz et de fumée
JPH08266834A (ja) * 1995-03-29 1996-10-15 Hitachi Zosen Corp バグフィルター設備
CN102085440A (zh) * 2010-12-30 2011-06-08 广西科穗环境科技有限公司 复合肥袋式除尘防结露的方法和设备
CN202289724U (zh) * 2011-10-11 2012-07-04 中建材(北京)环保工程发展有限公司 空气预热式袋除尘器
CN206837686U (zh) * 2017-04-27 2018-01-05 安徽新力电业高技术有限责任公司 一种布袋除尘器烟气循环加热系统
CN207562532U (zh) * 2017-09-05 2018-07-03 上海超惠通风环保设备有限公司 一种多介质高浓度亚微米废气处理系统中的布袋除尘器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146407A2 (fr) * 1983-12-17 1985-06-26 Tilghman Wheelabrator Limited Dispositif et procédé de traitement de particules, de gaz et de fumée
JPH08266834A (ja) * 1995-03-29 1996-10-15 Hitachi Zosen Corp バグフィルター設備
CN102085440A (zh) * 2010-12-30 2011-06-08 广西科穗环境科技有限公司 复合肥袋式除尘防结露的方法和设备
CN202289724U (zh) * 2011-10-11 2012-07-04 中建材(北京)环保工程发展有限公司 空气预热式袋除尘器
CN206837686U (zh) * 2017-04-27 2018-01-05 安徽新力电业高技术有限责任公司 一种布袋除尘器烟气循环加热系统
CN207562532U (zh) * 2017-09-05 2018-07-03 上海超惠通风环保设备有限公司 一种多介质高浓度亚微米废气处理系统中的布袋除尘器

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