WO2023231069A1 - 一种锅炉废气处理设备 - Google Patents

一种锅炉废气处理设备 Download PDF

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WO2023231069A1
WO2023231069A1 PCT/CN2022/098002 CN2022098002W WO2023231069A1 WO 2023231069 A1 WO2023231069 A1 WO 2023231069A1 CN 2022098002 W CN2022098002 W CN 2022098002W WO 2023231069 A1 WO2023231069 A1 WO 2023231069A1
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box
heat
heat collecting
air
treatment equipment
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PCT/CN2022/098002
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English (en)
French (fr)
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蓝兰
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天津大学滨海工业研究院有限公司
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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
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters

Definitions

  • the invention belongs to the technical field of waste gas treatment and reuse equipment, and in particular relates to a boiler waste gas treatment equipment.
  • the hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's lives. It can also be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator.
  • waste gas will be produced.
  • Boiler exhaust gas contains dust, nitrogen oxides, sulfur dioxide and other gases. At the same time, the exhaust gas also contains a large amount of heat. Direct emission of boiler exhaust gas not only causes pollution, but also causes a waste of energy. Therefore, it is necessary to design a device that can treat exhaust gas and recover heat energy.
  • the present invention aims to overcome the defects in the prior art and propose a boiler exhaust gas treatment equipment.
  • a boiler waste gas treatment equipment including a heat collecting box and a treatment box fixed in the heat collecting box; the gas collecting box is provided with a medium inlet and a medium outlet;
  • An air pipe is installed on the treatment box, and an exhaust port is provided at one end of the air pipe extending out of the heat collecting box.
  • the air inlet on the heat collecting box is connected with the treatment box, and a filter assembly is installed in the treatment box;
  • the part of the air pipe located inside the heat collecting box is provided with multiple sets of heat collecting assemblies;
  • the heat collecting box includes a main box and an air inlet box on one side of the main box, and the air inlet is provided on the air inlet box; the open end of the processing box faces the air inlet box side.
  • the open end of the box is provided with an outward bend;
  • the first flange connection part on the main box and the second flange connection part on the air inlet box are fixed through connectors, and at the same time, the bent part of the processing box is fixed between the first flange connection part and the air inlet box. between the second flange connection parts.
  • the heat collecting assembly includes two heat collecting plates arranged in parallel, and a heat conducting pipe is fixed between the two heat collecting plates.
  • the upper and lower ends of the heat conducting pipe respectively extend out of the air pipe, and the heat conducting pipe and the air passing pipe are sealed. ;
  • the heat collecting plates on both sides of the heat conducting tube are close to the heat conducting tube.
  • the sum of the area of each air hole on the heat collecting plate is less than 1/3 of the surface area of the heat collecting plate.
  • the sum of the area of each air hole is It is 1/5-1/3 of the surface area of the heat collecting plate.
  • the two heat collecting plates in the heat collecting assembly are connected through an array of screws arranged symmetrically.
  • the outer side of the heat collecting box is covered with a thermal insulation layer.
  • the insulation layer adopts an asbestos layer or a polyurethane insulation material layer.
  • the filter assembly includes a filter screen, a first filter element and a second filter element arranged in sequence from the air intake side to the exhaust side.
  • both the first filter element and the second filter element adopt plate and frame type dust removal filter elements.
  • the invention has the following advantages:
  • the invention has a compact structure and reasonable design.
  • the processing box is arranged inside the heat collecting box, which can reduce heat damage during the exhaust gas filtration process.
  • the gas purified by the filter assembly will enter the air pipe and be processed by an array provided at the air pipe.
  • the heat collecting component collects the heat in the exhaust gas and conducts the heat to the middle of the heat collecting box, where it is absorbed by the medium in the heat collecting box to achieve the purpose of waste heat recovery, which is energy-saving and environmentally friendly.
  • Figure 1 is a schematic structural diagram created by the present invention
  • Figure 2 is a schematic diagram of the treatment box and the air pipe part in the creative embodiment of the present invention.
  • Figure 3 is a schematic diagram of the main box in an embodiment of the present invention.
  • Figure 4 is a schematic diagram of the air intake box in an embodiment of the present invention.
  • Figure 5 is a schematic diagram of a heat collecting assembly in an embodiment of the present invention.
  • Figure 6 is a schematic diagram of Figure 5 with the heat pipe removed.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • Detachable connection, or integral connection can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • Detachable connection, or integral connection can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • a boiler waste gas treatment equipment as shown in Figures 1 to 6, includes a heat collection box 1 and a treatment box 2 fixed in the heat collection box.
  • the gas collection box is provided with a medium inlet 3 and a medium outlet 4;
  • An air pipe 5 is installed on the treatment box.
  • One end of the air pipe extending out of the heat collecting box is provided with an exhaust port 6.
  • the air inlet 7 on the heat collecting box is connected with the treatment box.
  • a filter is installed in the treatment box.
  • Component 8; the part of the air pipe inside the heat collecting box is provided with multiple sets of heat collecting components 9;
  • the heat collecting box includes a main box 10 and an air inlet box 11 on one side of the main box.
  • the air inlet is provided on the air inlet box.
  • a stop valve can be installed at the air inlet. When maintenance is required (such as cleaning the filter components), the stop valve can be closed to prevent exhaust gas from being directly discharged into the air.
  • the open end of the treatment box faces one side of the air inlet box, and an outward bending portion 12 is provided at the open end of the treatment box.
  • the first flange connection part 13 on the main box and the second flange connection part 14 on the air inlet box are fixed by connecting parts (such as bolts).
  • the bent part of the processing box is fixed on the third flange connection part 13 of the main box. between a flange connection part and a second flange connection part.
  • the above-mentioned heat collecting assembly includes two heat collecting plates 15 arranged in parallel.
  • a heat conducting pipe 16 is fixed between the two heat collecting plates.
  • the upper and lower ends of the heat conducting pipe respectively extend out of the air pipe, and the heat conducting pipe and the air pipe are sealed, that is, The air pipe is not connected to the heat collecting box.
  • the sum of the areas of each air hole on the above-mentioned heat collecting plate is less than 1/3 of the surface area of the heat collecting plate.
  • the sum of the area of each air hole is It is 1/5-1/3 of the surface area of the heat collecting plate.
  • the two heat collecting plates in the above heat collecting assembly are connected and fixed by an array of screws arranged symmetrically.
  • the heat exchange medium can be water or air.
  • the heat exchange medium will absorb the heat from the heat pipe, increase the temperature of the medium, and the heated medium will be discharged from the medium outlet.
  • the outside of the heat collecting box is covered with an insulation layer 18 .
  • the above insulation layer uses an asbestos layer or a polyurethane insulation material layer.
  • those skilled in the art can also use other insulation materials as the insulation layer, which will not be described again here.
  • the filter assembly includes a filter screen 19, a first filter element 20 and a second filter element 21 arranged in sequence from the intake side to the exhaust side.
  • first filter element and the second filter element referred to here can be the same filter element, or filter elements with different functions or filtering effects can be set as needed.
  • the two filter elements can achieve a two-stage filtration effect and improve the exhaust gas purification treatment capacity.
  • the above-mentioned first filter element and the second filter element both adopt plate and frame dust removal filter elements.
  • the filter screen plays the role of primary filtration.
  • the double-layer filter element effectively improves the filtration effect of harmful substances in the exhaust gas.
  • the invention has a compact structure and reasonable design.
  • the processing box is arranged inside the heat collecting box, which can reduce heat damage during the exhaust gas filtration process.
  • the gas purified by the filter assembly will enter the air pipe and be processed by an array provided at the air pipe.
  • the heat collecting component collects the heat in the exhaust gas and conducts the heat to the middle of the heat collecting box, where it is absorbed by the medium in the heat collecting box to achieve the purpose of waste heat recovery, which is energy-saving and environmentally friendly.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

一种锅炉废气处理设备，包括集热箱（1）以及固定在集热箱（1）内的处理箱（2）；集热箱（1）上设有介质进口（3）和介质出口（4）；处理箱（2）上安装有过气管（5），该过气管（5）外伸出集热箱（1）的一端设有排气口（6），集热箱（1）上的进气口（7）与处理箱（2）相通，在处理箱（2）内安装有过滤组件（8）；过气管（5）处于集热箱（1）以内的部分设有多组集热组件（9）；集热箱（1）包括主箱体（10）和主箱体（10）一侧的进气箱体（11），进气口（7）设置在进气箱体（11）上。处理箱（2）布置在集热箱（1）内部，减少了废气过滤处理过程中热量损坏，经过滤组件（8）净化处理后的气体进入过气管（5），并由过气管（5）处设置的数组集热组件（9）对废气中的热量进行收集，并将热量传导至集热箱（1）的换热介质中，由集热箱（1）内的介质吸收，达到余热回收的目的。

Description

一种锅炉废气处理设备 技术领域
本发明创造属于废气处理及再利用设备技术领域，尤其是涉及一种锅炉废气处理设备。
背景技术
锅炉中产生的热水或蒸汽可直接为工业生产和人民生活提供所需热能，也可通过蒸汽动力装置转换为机械能，或再通过发电机将机械能转换为电能，锅炉在使用时会产生废气，锅炉的废气中含有粉尘、氮氧化物、二氧化硫等气体，同时，废气中也有大量的热量，锅炉废气直接排放，不仅造成污染，还造成了能源的浪费。因此，需要设计一种能够处理废气并对热能进行回收的装置。
发明内容
有鉴于此，本发明创造旨在克服现有技术中的缺陷，提出一种锅炉废气处理设备。
为达到上述目的，本发明创造的技术方案是这样实现的：
一种锅炉废气处理设备，包括集热箱以及固定在集热箱内的处理箱；所述集气箱上设有介质进口和介质出口；
所述处理箱上安装有过气管，该过气管外伸出集热箱的一端设有排气口，集热箱上的进气口与处理箱相通，在处理箱内安装有过滤组件；所述过气管处于集热箱以内的部分设有多组集热组件；
所述集热箱包括主箱体和主箱体一侧的进气箱体，所述进气口设 置在进气箱体上；所述处理箱开口端朝向进气箱体一侧，在处理箱开口端设有向外的弯折部；
所述主箱体上的第一法兰连接部与进气箱体上的第二法兰连接部通过连接件固定，同时，将处理箱体的弯折部固定在第一法兰连接部与第二法兰连接部之间。
进一步，所述集热组件包括平行布置的两块集热板，在两集热板间固定有导热管，所述导热管上下两端分别伸出过气管，且导热管与过气管间密封处理；相邻两导热管间留有过气间隙，在集热板上对应过气间隙均设有若干过气孔。
进一步，所述导热管两侧的集热板均紧贴导热管。
进一步，所述集热板上各个的过气孔面积之和小于集热板表面积的1/3，为保证较佳的集热效果，同时，又保证废气排出顺畅，一般各个的过气孔面积之和为集热板表面积的1/5-1/3。
进一步，集热组件中两集热板通过对称布置的数组螺杆连接。
进一步，所述集热箱外侧包覆有保温层。
进一步，所述保温层采用石棉层或聚氨酯保温材料层。
进一步，所述过滤组件包括由进气侧向排气侧依次布置的过滤网、第一滤芯和第二滤芯。
进一步，第一滤芯包括和第二滤芯均采用板框式的除尘滤芯。
相对于现有技术，本发明创造具有以下优势：
本发明创造结构紧凑，设计合理，处理箱布置在集热箱内部，好减少了废气过滤处理过程中热量损坏，经过滤组件净化处理后的气体 会进入过气管，并由过气管处设置的数组集热组件对废气中的热量进行收集，并将热量传导至集热箱的中，由集热箱内的介质吸收，达到余热回收的目的，节能环保性好。
附图说明
构成本发明创造的一部分的附图用来提供对本发明创造的进一步理解，本发明创造的示意性实施例及其说明用于解释本发明创造，并不构成对本发明创造的不当限定。在附图中：
图1为本发明创造的结构示意图；
图2为本发明创造实施例中处理箱及过气管部分的示意图；
图3为本发明创造实施例中主箱体的示意图；
图4为本发明创造实施例中进气箱体的示意图；
图5为本发明创造实施例中集热组件的示意图；
图6为图5中去掉导热管后的示意图。
附图标记说明：
1-集热箱；2-处理箱；3-介质进口；4-介质出口；5-过气管；6-排气口；7-进气口；8-过滤组件；9-集热组件；10-主箱体；11-进气箱体；12-弯折部；13-第一法兰连接部；14-第二法兰连接部；15-集热板；16-导热管；17-过气孔；18-保温层；19-过滤网；20-第一滤芯；21-第二滤芯。
具体实施方式
需要说明的是，在不冲突的情况下，本发明创造中的实施例及实施例中的特征可以相互组合。
在本发明创造的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明创造和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明创造的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明创造的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明创造的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以通过具体情况理解上述术语在本发明创造中的具体含义。
下面将参考附图并结合实施例来详细说明本发明创造。
一种锅炉废气处理设备，如图1至6所示，包括集热箱1以及固定在集热箱内的处理箱2，集气箱上设有介质进口3和介质出口4；
所述处理箱上安装有过气管5，该过气管外伸出集热箱的一端设有排气口6，集热箱上的进气口7与处理箱相通，在处理箱内安装有 过滤组件8；所述过气管处于集热箱以内的部分设有多组集热组件9；
所述集热箱包括主箱体10和主箱体一侧的进气箱体11，所述进气口设置在进气箱体上，通常，可在进气口处安装有截止阀，当需要检修维护(如清理过滤组件)时，可以关闭截止阀，防止废气直接排入到空气中。所述处理箱开口端朝向进气箱体一侧，在处理箱开口端设有向外的弯折部12。
所述主箱体上的第一法兰连接部13与进气箱体上的第二法兰连接部14通过连接件(如螺栓)固定，同时，将处理箱体的弯折部固定在第一法兰连接部与第二法兰连接部之间。
上述集热组件包括平行布置的两块集热板15，在两集热板间固定有导热管16，导热管上下两端分别伸出过气管，且导热管与过气管间密封处理，即，过气管与集热箱不连通。相邻两导热管间留有过气间隙，在集热板上对应每一处的过气间隙均设有若干过气孔17。为了保证换热效果，导热管两侧的集热板均紧贴导热管。
优选的，上述集热板上各个的过气孔面积之和小于集热板表面积的1/3，为保证较佳的集热效果，同时，又保证废气排出顺畅，一般各个的过气孔面积之和为集热板表面积的1/5-1/3。作为举例，上述集热组件中两集热板通过对称布置的数组螺杆连接固定。
通过介质进口向集热箱内加入换热介质。作为举例，换热介质可以为水、空气。换热介质会吸收导热管的热量，提高介质温度，升温后的介质从介质出口排出。
在一个可选的实施例中，在集热箱外侧包覆有保温层18。作为 举例，上述保温层采用石棉层或聚氨酯保温材料层，当然，本领域技术人员采用其它保温材料作为保温层也是可行的，在此不再赘述。
在一个可选的实施例中，过滤组件包括由进气侧向排气侧依次布置的过滤网19、第一滤芯20和第二滤芯21。需要说明的是，这里所指的第一滤芯和第二滤芯可以为相同的滤芯，也可以根据需要，设置不同功能或过滤效果的滤芯，本领域技术人员根据需要进行选择即可，所设置的两道滤芯可起到双级过滤效果，提高了废气净化处理能力。作为举例，上述第一滤芯包括和第二滤芯均采用板框式的除尘滤芯，过滤网起到初级过滤的作用，所设置的双层滤芯，有效提高了废气中有害物质的过滤效果。
本发明创造结构紧凑，设计合理，处理箱布置在集热箱内部，好减少了废气过滤处理过程中热量损坏，经过滤组件净化处理后的气体会进入过气管，并由过气管处设置的数组集热组件对废气中的热量进行收集，并将热量传导至集热箱的中，由集热箱内的介质吸收，达到余热回收的目的，节能环保性好。
以上所述仅为本发明创造的较佳实施例而已，并不用以限制本发明创造，凡在本发明创造的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明创造的保护范围之内。

Claims (9)

  1. 一种锅炉废气处理设备，其特征在于：包括集热箱以及固定在集热箱内的处理箱；所述集气箱上设有介质进口和介质出口；
    所述处理箱上安装有过气管，该过气管外伸出集热箱的一端设有排气口，集热箱上的进气口与处理箱相通，在处理箱内安装有过滤组件；所述过气管处于集热箱以内的部分设有多组集热组件；
    所述集热箱包括主箱体和主箱体一侧的进气箱体，所述进气口设置在进气箱体上；所述处理箱开口端朝向进气箱体一侧，在处理箱开口端设有向外的弯折部；
    所述主箱体上的第一法兰连接部与进气箱体上的第二法兰连接部通过连接件固定，同时，将处理箱体的弯折部固定在第一法兰连接部与第二法兰连接部之间。
  2. 根据权利要求1所述的一种锅炉废气处理设备，其特征在于：所述集热组件包括平行布置的两块集热板，在两集热板间固定有导热管，所述导热管上下两端分别伸出过气管，且导热管与过气管间密封处理；相邻两导热管间留有过气间隙，在集热板上对应过气间隙均设有若干过气孔。
  3. 根据权利要求2所述的一种锅炉废气处理设备，其特征在于：所述导热管两侧的集热板均紧贴导热管。
  4. 根据权利要求2所述的一种锅炉废气处理设备，其特征在于：所述集热板上各个的过气孔面积之和小于集热板表面积的1/3。
  5. 根据权利要求2所述的一种锅炉废气处理设备，其特征在于：所述集热组件中两集热板通过对称布置的数组螺杆连接固定。
  6. 根据权利要求1所述的一种锅炉废气处理设备，其特征在于：所述集热箱外侧包覆有保温层。
  7. 根据权利要求6所述的一种锅炉废气处理设备，其特征在于：所述保温层采用石棉层或聚氨酯保温材料层。
  8. 根据权利要求1所述的一种锅炉废气处理设备，其特征在于：所述过滤组件包括由进气侧向排气侧依次布置的过滤网、第一滤芯和第二滤芯。
  9. 根据权利要求8所述的一种锅炉废气处理设备，其特征在于：所述第一滤芯包括和第二滤芯均采用板框式的除尘滤芯。
PCT/CN2022/098002 2022-06-01 2022-06-10 一种锅炉废气处理设备 WO2023231069A1 (zh)

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