WO2021128108A1 - Bag filter heating system for waste incineration power plant - Google Patents

Bag filter heating system for waste incineration power plant 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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pipe
bag filter
hot
air
shared
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PCT/CN2019/128481
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French (fr)
Chinese (zh)
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赵娜娜
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深圳市能源环保有限公司
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Priority to PCT/CN2019/128481 priority Critical patent/WO2021128108A1/en
Publication of WO2021128108A1 publication Critical patent/WO2021128108A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof

Abstract

A bag filter heating system for a waste incineration power plant, the bag filter heating system comprising bag filters (1A, 1B), induced draft systems (2A, 2B) and main heating circulation systems (3A, 3B), wherein the induced draft systems (2A, 2B) sequentially comprise, in an air flow direction, air intake pipes (2A21, 2B21), induced draft fans (2A1, 2B1), exhaust pipes (2A22, 2B22), silencers (2A3, 2B3) and induced draft system chimney-connecting pipes (2A4, 2B4), and the main heating circulation systems (3A, 3B) sequentially comprise, in the air flow direction, suction pipe interfaces (3A4, 3B4), hot-air blower suction pipes (3A21, 3B21), suction pipe valves (3A3, 3B3), hot-air blowers (3A1, 3B1) and hot-air blower exhaust pipes (3A22, 3B22). A shared hot-smoke system (4) is further provided. The shared hot-smoke system (4) comprises a shared communication pipe (4.1), wherein an inlet of the shared communication pipe (4.1) is connected to the exhaust pipes (2A22, 2B22) of the induced draft systems (2A, 2B) by means of output pipes (4A1, 4B1), and an outlet of the shared communication pipe (4.1) is respectively connected to the suction pipe interfaces (3A4, 3B4) by means of diverter pipes (4A3, 4B3). When main heaters of the bag filters (1A, 1B) often fail, the failed bag filters (1A, 1B) can be heated using the shared hot-smoke system (4) and using hot smoke of other induced draft systems (2A, 2B) that are in operation, ensuring that the failed bag filters (1A, 1B) can operate normally.

Description

一种垃圾焚烧发电厂袋式除尘器加热系统Heating system of bag filter in garbage incineration power plant 技术领域Technical field
本发明涉及烟气余热回收利用系统,尤其适涉及一种垃圾焚烧发电厂袋式除尘器加热系统。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.
背景技术Background technique
垃圾焚烧厂的烟气净化处理系统,设置了半干式反应塔、雾化器、布袋除尘器、活性炭、石灰浆等系统。其中布袋除尘器是垃圾焚烧发电厂烟气处理系统关键设备之一,布袋除尘器功能有两方面:第一,在进口处分离烟气中的灰尘和固体颗粒,然后在出口处将无尘的干净气体排出;第二,滤袋上粘附的粉尘中含有石灰浆和活性炭,因此可以延续中和反应和吸附粉尘中的有害物。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.
布袋除尘器的预热循环是它的重要部分组成,在设计中冷启动前是由布袋除尘器的主加热器对中箱体进行预热,使仓室内温度在8小时内自环境温度预热至140℃以上,布袋除尘器热风循环系统启动前烟气进口门、出口门处于关闭状态,布袋除尘器的箱体处于封闭热风自循环状态。只有满足此条件布袋除尘器中的滤袋对烟气的除尘方能达到最佳效果,同时防止热烟气和除尘器内的冷空气相遇结露后在喷吹的过程中对布袋除尘器造成伤害。但是在实际的运行中发现布袋除尘器的主加热器经常发生故障,致使仓室的温度无法满足要求。The preheating cycle of the bag filter is an important part of it. In the design, 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. Above 140℃, 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. However, in actual operation, it was found that the main heater of the bag filter often failed, causing the temperature of the warehouse to fail to meet the requirements.
发明内容Summary of the invention
为了克服现有技术问题,本发明提出一种垃圾焚烧发电厂袋式除尘器加热系统,通过设置共享热烟系统,并且所述共享热烟系统包括共享连通管,所述共享连通管的入口经各个引出管与各个引风系统的排风管连接,所述共享连通管的出口经各个分流管与各个袋式除尘器的热风自循环系统的吸风管接口连接。当布袋除尘器的主加热器经常发生故障,致使仓室的温度无法满足要求的情况下,可以通过共享热烟系统,利用正在运行的其它引风系统的热烟,向出现故障的袋式除尘器进行加热,确保发生故障的袋式除尘器可以正常运行。In order to overcome the problems of the prior art, 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. When the main heater of the bag filter often fails and the temperature of the warehouse cannot meet the requirements, 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.
本发明解决的技术问题所提出的技术方案是,一种垃圾焚烧发电厂袋式除尘器加热系统,包括布袋除尘器、引风系统及主加热循环系统,所述引风系统以气流方向依次包括进风管、引风机、排风管、消音器及引风系统接烟囱管,所述进风管与袋式除尘器连接,所述引风系统接烟囱管将烟气排至烟囱;所述主加热循环系统以气流方向依次包括吸风管接口、热风机吸风管、吸风管阀门、热风机、热风机排风管,所述热风系统吸风管与所述袋式除尘器的一个接口连接并从中吸气,所述热风机排风管与所述袋式除尘器的另一接口连接并向其提供热风,经所述热风机不断地向所述袋式除尘器循环提供热风,其特征是,还设置共享热烟系统,所述共享热烟系统包括共享连通管,所述共享连通管的入口经各个引出管与各个引风系统的排风管连接,所述共享连通管的出口经各个分流管与各个主加热循环系统的吸风管接口连接。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.
本发明的有益效果:一种垃圾焚烧发电厂袋式除尘器加热系统,通过设置共享热烟系统,并且所述共享热烟系统包括共享连通管,所述共享连通管的入口经各个引出管与各个引风系统的排风管连接,所述共 享连通管的出口经各个分流管与各个袋式除尘器的热风自循环系统的吸风管接口连接。当布袋除尘器的主加热器经常发生故障,致使仓室的温度无法满足要求的情况下,可以通过共享热烟系统,利用正在运行的其它引风系统的热烟,向出现故障的袋式除尘器进行加热,确保发生故障的袋式除尘器可以正常运行。The beneficial effects of the present invention: 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. When the main heater of the bag filter often fails and the temperature of the warehouse cannot meet the requirements, 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.
附图说明Description of the drawings
图1-图3为现有技术一个实施例的系统布置示意图。其中,图1为主视图,图2为俯视图,图3为局部结构放大示意图。Figures 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.
图4图6为本发明第一个实施例的系统布置示意图。其中,图4为主视图,图5为俯视图,图6为局部结构放大示意图。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.
图中:In the figure:
1A、1号布袋除尘器,1B、2号布袋除尘器,1A, No. 1 bag filter, 1B, No. 2 bag filter,
2A、1号引风系统;2B、2号引风系统;2A, No. 1 induced air system; 2B, No. 2 induced air system;
2A1、1号引风机;2B1、2号引风机;2A1, No. 1 induced draft fan; 2B1, No. 2 induced draft fan;
2A21、1号进风管,3A22、1号排风管;2B21、2号进风管,3B22、2号排风管;2A21, No. 1 intake pipe, 3A22, No. 1 exhaust pipe; 2B21, No. 2 intake pipe, 3B22, No. 2 exhaust pipe;
2A3、1号消音器;2B3、2号消音器;2A3, No. 1 silencer; 2B3, No. 2 silencer;
2A4、1号引风系统接烟囱管;2B4、2号引风系统接烟囱管;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、1号主加热循环系统;3B、2号主加热循环系统,3A, No. 1 main heating circulation system; 3B, No. 2 main heating circulation system,
3A1、1号热风机;3B1、2号热风机;3A1, No. 1 hot air blower; 3B1, No. 2 hot air blower;
3A21、1号热风机吸风管,3A22、1号热风机排风管;3B21、2号热风机吸风管,3B22、2号热风机排风管;3A21, No. 1 hot air blower suction pipe, 3A22, No. 1 hot air blower exhaust pipe; 3B21, No. 2 hot air blower suction pipe, 3B22, No. 2 hot air exhaust pipe;
3A3、1号吸风管阀门;3B3、2号吸风管阀门;3A3, No. 1 suction pipe valve; 3B3, No. 2 suction pipe valve;
3A4、1号吸风管接口;3B4、2号吸风管接口;3A4, No. 1 suction pipe connection; 3B4, No. 2 suction pipe connection;
4、共享热烟系统;4.1共享连通管;4. Sharing hot smoke system; 4.1 sharing connecting pipe;
4A1、1号引出管;4B1、2号引出管;4A1, No. 1 lead-out tube; 4B1, No. 2 lead-out tube;
4A2、1号引出管阀门;4B2、2号引出管阀门;4A2, No. 1 outlet pipe valve; 4B2, No. 2 outlet pipe valve;
4A3、1号分流管;4B3、2号分流管。4A3, No. 1 shunt pipe; 4B3, No. 2 shunt pipe.
具体实施方式Detailed ways
图1-图3为现有技术一个实施例的系统布置示意图。其中,图1为主视图,图2为俯视图,图3为局部结构放大示意图。图中显示,现有技术中,一种垃圾焚烧发电厂袋式除尘器加热系统,包括1号布袋除尘器1A、2号布袋除尘器2B,1号引风系统2A、2号引风系统2B,1号主加热循环系统3A、2号主加热循环系统3B。Figures 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. 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.
图中显示,1号引风系统2A以气流方向依次包括1号进风管2A21、1号引风机2A1、1号排风管2A22、 1号消音器2A3及1号引风系统接烟囱管2A4,所述进风管2A21与袋式除尘器连接,所述引风系统接烟囱管2A4将烟气排至烟囱。1号主加热循环系统3A以气流方向依次包括1号吸风管接口3A4、1号热风机吸风管3A21、1号吸风管阀门3A3、1号热风机3A1、1号热风机排风管3A22,所述1号热风系统吸风管3A21与所述1号袋式除尘器的一个接口连接并从中吸气,所述1号热风机排风管3A22与所述1号袋式除尘器的另一接口连接并向其提供热风,经所述1号热风机3A1不断地向所述1号袋式除尘器循环提供热风。As shown in the figure, 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.
图中显示,2号引风系统2B以气流方向依次包括2号进风管2B21、2号引风机2B1、2号排风管2B22、2号消音器2B3及2号引风系统接烟囱管2B4,所述进风管2B21与袋式除尘器连接,所述引风系统接烟囱管2B4将烟气排至烟囱。2号主加热循环系统3B以气流方向依次包括2号吸风管接口3B4、2号热风机吸风管3B21、2号吸风管阀门3B3、2号热风机3B1、2号热风机排风管3B22,所述2号热风系统吸风管3B21与所述2号袋式除尘器的一个接口连接并从中吸气,所述2号热风机排风管3B22与所述2号袋式除尘器的另一接口连接并向其提供热风,经所述2号热风机3B1不断地向所述2号袋式除尘器循环提供热风。As shown in the figure, 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. 2 hot air system suction pipe 3B21 is connected to an interface of the No. 2 bag filter and sucks air from it, and the No. 2 hot air blower exhaust pipe 3B22 is connected to the No. 2 bag filter. The other interface is connected to and provides hot air to it, and the hot air is continuously provided to the No. 2 bag filter via the No. 2 hot air blower 3B1.
图中显示,垃圾焚烧系统的各个袋式除尘器的主加热器系统是独立运行的。The figure shows that the main heater system of each bag filter of the garbage incineration system operates independently.
在实际运行过程中,在袋式除尘器热风循环系统启动前烟气进口门、出口门处于关闭状态,布袋除尘器的箱体处于封闭热风自循环状态。只有满足此条件布袋除尘器中的滤袋对烟气的除尘才能达到最佳效果,同时防止热烟气和除尘器内的冷空气相遇结露后在喷吹的过程中对布袋除尘器造成伤害。但是在实际的运行中发现袋式除尘器的主加热器经常发生故障,致使仓室的温度无法满足要求。本发明提示,本例中,仅显示两个袋式除尘器及其相关系统,而实际运行中,垃圾焚烧系统的袋式除尘器及其相关系统数量超过两个。In the actual operation process, 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. . However, in actual operation, it was found that 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.
图4-图6为本发明第一个实施例的系统布置示意图。其中,图4为主视图,图5为俯视图,图6为局部结构放大示意图。图中显示,与现有技术不同的是,本例中,一种垃圾焚烧发电厂袋式除尘器加热系统,还设置共享热烟系统4,所述共享热烟系统4包括共享连通管4.1,所述共享连通管4.1的入口经1号引出管4A1、2号引出管4B1分别与1号引风系统2A的排风管2A22、2号引风系统2B的排风管2B22连接,所述共享连通管4.1的出口经1号分流管4A3、4B3分别与1号吸风管接口3A4、2号吸风管接口3B4连接。Figures 4-6 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. 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.
图中显示,本例中,若某个布袋除尘器的主加热器经常发生故障,致使仓室的温度无法满足要求的情况下,可以通过共享热烟系统,利用正在运行的其它引风系统的热烟,向出现故障的袋式除尘器进行加热,确保出故障的袋式除尘器可以正常运行。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.

Claims (1)

  1. 一种垃圾焚烧发电厂袋式除尘器加热系统,包括布袋除尘器、引风系统及主加热循环系统,所述引风系统以气流方向依次包括进风管、引风机、排风管、消音器及引风系统接烟囱管,所述进风管与袋式除尘器连接,所述引风系统接烟囱管将烟气排至烟囱;所述主加热循环系统以气流方向依次包括吸风管接口、热风机吸风管、吸风管阀门、热风机、热风机排风管,所述热风系统吸风管与所述袋式除尘器的一个接口连接并从中吸气,所述热风机排风管与所述袋式除尘器的另一接口连接并向其提供热风,经所述热风机不断地向所述袋式除尘器循环提供热风,其特征是,还设置共享热烟系统,所述共享热烟系统包括共享连通管,所述共享连通管的入口经各个引出管与各个引风系统的排风管连接,所述共享连通管的出口经各个分流管与各个主加热循环系统的吸风管接口连接。A heating system for a bag filter in a garbage incineration power plant, comprising a bag filter, an induced air system and a main heating circulation system. The induced air system includes an air inlet pipe, an induced draft fan, an exhaust pipe, and a muffler in order of airflow direction. And the air induction system is connected to the chimney pipe, the air inlet pipe is connected to the bag filter, the air induction system is connected to the chimney pipe to discharge the flue gas to the chimney; the main heating circulation system sequentially includes the suction pipe interface in the airflow direction , Hot air blower suction pipe, suction pipe valve, hot air blower, hot air blower exhaust pipe, the hot air system suction pipe is connected to an interface of the bag filter and sucks air from it, the hot air blower exhausts The pipe is connected to the other interface of the bag filter and provides hot air to it, and the hot air is continuously provided to the bag filter through the hot air blower. The feature is that a shared hot smoke system is also provided. The shared hot smoke system includes a shared communicating pipe, the inlet of the shared communicating pipe is connected to the exhaust pipe of each induced air system through each outlet pipe, and the outlet of the shared communicating pipe is connected to each main heating circulation system through each branch pipe. Air duct interface connection.
PCT/CN2019/128481 2019-12-25 2019-12-25 Bag filter heating system for waste incineration power plant WO2021128108A1 (en)

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EP0146407A2 (en) * 1983-12-17 1985-06-26 Tilghman Wheelabrator Limited Apparatus for and a method of processing particulate gas and fumes
JPH08266834A (en) * 1995-03-29 1996-10-15 Hitachi Zosen Corp Bag filter device
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