CN106377961A - Wet type grading dust removal device and application - Google Patents
Wet type grading dust removal device and application Download PDFInfo
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Abstract
本发明涉及一种湿式分级除尘装置，所述装置包括装置外壳、一级粗除尘装置、二级精除尘装置、喷淋系统、除雾系统、出气口和水箱系统，所述一级粗除尘装置设置于装置外壳的底部，所述出气口设置于装置外壳的顶部，所述二级精除尘装置、除雾系统由下至上依次间隔设置于一级粗除尘装置和出气口之间的装置外壳上，所述喷淋系统能够向二级精除尘装置喷淋，所述水箱系统设置于装置外壳外且与一级粗除尘装置相连接设置。本发明结构紧凑、阻力小、投资成本较低、通过二级除尘，除尘效率增加，该装置能够保证出口烟尘的排放浓度为5mg/Nm3以下，达到国家环保要求排放的标准。
The invention relates to a wet-type classification dedusting device, which comprises a device shell, a first-stage coarse dedusting device, a second-stage fine dedusting device, a spray system, a demisting system, an air outlet and a water tank system, and the first-stage coarse dedusting device Set at the bottom of the device shell, the air outlet is set on the top of the device shell, and the secondary fine dust removal device and demisting system are sequentially arranged on the device shell between the first-level coarse dust removal device and the air outlet from bottom to top , the spray system can spray to the secondary fine dust removal device, and the water tank system is arranged outside the device shell and connected to the first stage coarse dust removal device. The invention has the advantages of compact structure, small resistance, low investment cost, and increased dust removal efficiency through secondary dust removal. The device can ensure that the discharge concentration of smoke at the outlet is below 5 mg/Nm 3 , which meets the discharge standard required by the national environmental protection.
Description
技术领域technical field
本发明属于环保技术领域，尤其是一种湿式分级除尘装置和应用，该装置可用于含尘烟气的处理中。The invention belongs to the technical field of environmental protection, in particular to a wet classification dedusting device and its application. The device can be used in the treatment of dusty flue gas.
背景技术Background technique
近来年，湿式除尘器以其结构简单、设备投资低、除尘效率高在燃煤锅炉、化工制药、食品加工、冶金、铸造等行业得到了广泛地应用。湿式除尘器在去除粉尘粒子的同时，还可以去除气体中的气态污染物，既起到除尘的作用、又起到净化的作用。与静电除尘器和袋式除尘器相比，湿式除尘器可以处理高温、高湿气流以及易燃和易爆的含尘气体。但是，传统单一的湿式除尘器除尘效率较低，不能满足国家环保要求排放的标准。In recent years, wet dust collectors have been widely used in coal-fired boilers, chemical pharmaceuticals, food processing, metallurgy, casting and other industries due to their simple structure, low equipment investment, and high dust removal efficiency. While removing dust particles, the wet dust collector can also remove gaseous pollutants in the gas, which not only plays the role of dust removal, but also plays the role of purification. Compared with electrostatic precipitators and bag filters, wet precipitators can handle high-temperature, high-humidity airflows, and flammable and explosive dust-laden gases. However, the traditional single wet dust collector has low dust removal efficiency and cannot meet the emission standards required by the national environmental protection requirements.
通过检索，发现如下一篇与本专利申请相关的专利公开文献：Through searching, the following patent publication related to this patent application was found:
转炉一次烟气湿式分级除尘装置（CN103276141A），包括依次连接的一级粗除尘装置、二级精除尘装置、三级精除尘装置、风机和循环水系统，所述一级粗除尘装置设有喷淋装置Ⅰ和污泥排放阀Ⅰ，所述二级精除尘装置设有喷淋装置Ⅱ和污泥排放阀Ⅱ，所述循环水系统包括污水处理装置和循环泵，所述污泥排放阀Ⅰ和污泥排放阀Ⅱ分别与污水处理装置入口连接，所述污水处理装置出口通过循环泵分别与喷淋装置Ⅰ和喷淋装置Ⅱ连接。本发明结构简单，运行稳定可靠，投资较小，运行维护成本低。通过三级除尘，提高了除尘效率，保证了净化后排放的烟气含尘浓度≤10mg/m3，低于现有的干法除尘技术和湿法除尘技术水平，其排放标准达到国际环保标准。Converter primary flue gas wet classification dust removal device (CN103276141A), including a first-level coarse dust removal device, a second-level fine dust removal device, a third-level fine dust removal device, a fan and a circulating water system connected in sequence. Spraying device I and sludge discharge valve I, the secondary fine dust removal device is equipped with spraying device II and sludge discharge valve II, the circulating water system includes sewage treatment equipment and a circulating pump, and the sludge discharge valve I and the sludge discharge valve II are respectively connected to the inlet of the sewage treatment device, and the outlet of the sewage treatment device is respectively connected to the spray device I and the spray device II through a circulation pump. The invention has the advantages of simple structure, stable and reliable operation, small investment and low operation and maintenance cost. Through the three-stage dust removal, the dust removal efficiency is improved, and the dust concentration of the exhausted flue gas after purification is guaranteed to be ≤10mg/m 3 , which is lower than the existing dry dust removal technology and wet dust removal technology. Its emission standard meets the international environmental protection standard .
通过对比，本发明专利申请与上述专利公开文献存在本质的不同。By comparison, the patent application of the present invention is substantially different from the above-mentioned patent publications.
发明内容Contents of the invention
本发明的目的在于克服现有湿式除尘技术中的不足之处，提供一种湿式分级除尘装置和应用，该装置可以保证出口烟尘的排放浓度为5mg/Nm3以下，达到国家环保要求排放的标准，该装置可用于含尘烟气的处理中。The purpose of the present invention is to overcome the deficiencies in the existing wet dust removal technology, to provide a wet classification dust removal device and its application, the device can ensure that the discharge concentration of smoke at the outlet is below 5 mg/Nm 3 , and meet the emission standards required by the national environmental protection requirements , the device can be used in the treatment of dusty flue gas.
本发明的目的是通过以下技术方案实现的：The purpose of the present invention is achieved through the following technical solutions:
一种湿式分级除尘装置，所述装置包括装置外壳、一级粗除尘装置、二级精除尘装置、喷淋系统、除雾系统、出气口和水箱系统，所述一级粗除尘装置设置于装置外壳的底部，所述出气口设置于装置外壳的顶部，所述二级精除尘装置、除雾系统由下至上依次间隔设置于一级粗除尘装置和出气口之间的装置外壳上，所述喷淋系统能够向二级精除尘装置喷淋，所述水箱系统设置于装置外壳外且与一级粗除尘装置相连接设置；A wet classification dust removal device, the device includes a device shell, a first-level coarse dust removal device, a second-level fine dust removal device, a spray system, a demisting system, an air outlet and a water tank system, and the first-level coarse dust removal device is set in the device The bottom of the housing, the air outlet is set on the top of the device housing, the secondary fine dust removal device and the demisting system are sequentially arranged on the device housing between the first-level coarse dust removal device and the air outlet from bottom to top, and the The spray system can spray to the secondary fine dust removal device, and the water tank system is arranged outside the device shell and connected with the first-level coarse dust removal device;
所述一级粗除尘装置包括进气口、套筒伸缩器、烟气喷嘴、集尘室I、集气口，所述集尘室I设置于装置外壳的底部，该集尘室I内盛装有水，该集尘室I上方的装置外壳上与装置外壳相连通设有进气口，该进气口的尾端通过同轴设置的套筒伸缩器连接烟气喷嘴的上端，该烟气喷嘴的底端设置于集尘室I的液面上方，该烟气喷嘴能够向液面喷出冲击水面的烟气，所述进气口上方的装置外壳上设有集气口，该集气口的底部外缘与装置外壳的内壁密封设置在一起；The first-level coarse dedusting device includes an air inlet, a sleeve expander, a flue gas nozzle, a dust collection chamber 1, and a gas collection port. The dust collection chamber 1 is arranged at the bottom of the device shell, and the dust collection chamber 1 is filled with Water, the device casing above the dust collection chamber 1 is connected with the device casing and is provided with an air inlet, and the tail end of the air inlet is connected to the upper end of the smoke nozzle through a coaxially arranged sleeve expander, and the smoke nozzle The bottom end of the bottom is arranged above the liquid surface of the dust collection chamber 1, and the smoke nozzle can spray the smoke that impacts the water surface to the liquid surface, and the device shell above the air inlet is provided with a gas collection port, and the bottom of the gas collection port The outer edge is sealed together with the inner wall of the device casing;
所述水箱系统包括水箱调节阀、泥浆泵、沉淀水箱和1#循环水泵，所述集尘室I的底部通过水箱调节阀、泥浆泵与沉淀水箱的中上部一侧入口相连通设置，该沉淀水箱的中上部另一侧出口通过1#循环水泵与集尘室I相连接设置，该1#循环水泵能够将沉淀水箱中的水输入集尘室I中；The water tank system includes a water tank regulating valve, a mud pump, a sedimentation water tank and a 1# circulating water pump. The bottom of the dust collection chamber 1 is connected to the entrance of the middle and upper side of the sedimentation water tank through the water tank regulating valve and the mud pump. The outlet on the other side of the middle and upper part of the water tank is connected to the dust collection chamber I through the 1# circulating water pump, and the 1# circulating water pump can input the water in the sedimentation water tank into the dust collection chamber I;
所述二级精除尘装置包括排浆管、除尘室、过烟管道、集尘室II、填料板和集水箱，所述集气口的上方设置集水箱，该集水箱与集尘室I不相连通设置，该集水箱的上方设置集尘室II，该集尘室II和集水箱之间同轴设置填料板，该填料板的边缘与装置外壳的内壁密封设置在一起；该集尘室II的上方设置除尘室，该除尘室的顶部外缘与装置外壳的内壁紧密设置在一起，该除尘室的底部同轴紧密连通设置排浆管，该排浆管的底部外侧边缘与装置外壳的内壁密封设置，该排浆管的底部出口与集尘室II相连通设置；所述除尘室中下部一侧紧密连通设置过烟管道的顶部，该过烟管道的底部向下穿过填料板与集气口的顶部紧密相连通设置；The secondary fine dust removal device includes a slurry discharge pipe, a dust removal chamber, a smoke passage pipe, a dust collection chamber II, a packing plate and a water collection box. A water collection box is arranged above the gas collection port, and the water collection box is not connected to the dust collection chamber I. Through setting, dust collection chamber II is arranged above the water collection box, and a packing plate is coaxially arranged between the dust collection chamber II and the water collection box, and the edge of the packing plate is sealed with the inner wall of the device shell; the dust collection chamber II A dust removal chamber is set above the top of the dust removal chamber. The top outer edge of the dust removal chamber is closely arranged with the inner wall of the device shell. The bottom of the dust removal chamber is coaxially closely connected with a slurry discharge pipe. The bottom outlet of the slurry discharge pipe is connected to the dust collection chamber II; the middle and lower side of the dust removal chamber is closely connected to the top of the smoke passage, and the bottom of the smoke passage passes downward through the packing plate and the collection chamber. The top of the air port is closely connected and connected;
所述喷淋系统包括2#循环水泵、喷淋调节阀、喷淋管路和超声波雾化喷嘴，所述2#循环水泵的输入端与集水箱的底部相连通设置，该2#循环水泵的输出端通过喷淋调节阀与喷淋管路相连接设置，所述喷淋管路的下底面上均布间隔相连通设有多个向下设置的超声波雾化喷嘴；所述喷淋管路和超声波雾化喷嘴间隔设置于除尘室和除雾系统之间的装置外壳上，该超声波雾化喷嘴能够向除尘室喷出微细水雾。The spray system includes 2# circulating water pump, spray regulating valve, spray pipeline and ultrasonic atomizing nozzle, the input end of the 2# circulating water pump is connected with the bottom of the water collection tank, and the 2# circulating water pump The output end is connected to the spray pipeline through the spray regulating valve, and the lower bottom surface of the spray pipeline is evenly spaced and connected with a plurality of downwardly arranged ultrasonic atomizing nozzles; the spray pipeline It is spaced apart from the ultrasonic atomizing nozzle on the device housing between the dust removal chamber and the demisting system, and the ultrasonic atomization nozzle can spray fine water mist to the dust removal chamber.
而且，所述装置还包括引风机，所述引风机与出气口相连接设置，该出气口通过引风机进行出气。Moreover, the device also includes an induced fan, which is connected to the air outlet, and the air outlet is discharged through the induced fan.
而且，所述装置外壳为圆形、方形或者椭圆形。Moreover, the housing of the device is circular, square or oval.
而且，所述烟气喷嘴的下底面距离液面的距离为200～1000mm。Moreover, the distance between the bottom surface of the smoke nozzle and the liquid surface is 200-1000mm.
而且，所述集气口的顶端直径与过烟管道的底端直径相同，集气口的下底面直径与装置外壳的直径相同。Moreover, the diameter of the top end of the air collecting port is the same as that of the bottom end of the smoke passage pipe, and the diameter of the bottom surface of the gas collecting port is the same as that of the device casing.
而且，所述除尘室为倒圆锥型结构且上端面直径与装置外壳的直径相同，下底面的直径与排浆管道的直径相同；所述集尘室II的底部与集尘室II内部相连通设有清淤泥口。Moreover, the dust removal chamber has an inverted conical structure and the diameter of the upper end surface is the same as that of the device casing, and the diameter of the lower bottom surface is the same as the diameter of the slurry discharge pipe; the bottom of the dust collection chamber II communicates with the inside of the dust collection chamber II There is a dredging port.
而且，所述集尘室I的液面上方的装置外壳上与集尘室I相连通设置一补水管；所述集水箱的底部一侧的装置外壳上与集水箱内相连通设置一进水管，该进水管上设置一供水阀门，该供水阀门能够打开或关闭进水管的进水。And, the device housing above the liquid level of the dust collecting chamber 1 communicates with the dust collecting chamber 1 and arranges a water supply pipe; the device housing on the bottom side of the water collecting tank communicates with the water collecting tank and arranges a water inlet pipe , a water supply valve is arranged on the water inlet pipe, and the water supply valve can open or close the water inlet of the water inlet pipe.
如上所述的湿式分级除尘装置在含尘烟气的处理中的应用。The application of the above-mentioned wet classification dedusting device in the treatment of dusty flue gas.
本发明所取得的优点和有益效果是：The advantages and beneficial effects obtained by the present invention are:
1、本装置包括装置外壳、一级粗除尘装置、二级精除尘装置、喷淋系统、除雾系统、出气口和水箱系统，该装置结构紧凑、阻力小、投资成本较低，通过二级除尘，除尘效率增加，该装置能够保证出口排放浓度达到5mg/Nm3以下，符合国家环保要求排放的标准；另外，本装置设置了超声波雾化喷嘴，可以降低喷淋量，节约水资源，喷出的微细液滴颗粒数量增多，其比表面积增大，进一步提高除尘效率；同时，本装置设置了套筒伸缩器，可以根据烟气的负荷调节烟气喷嘴下底面距离液面的距离，扩大了本装置的使用范围。1. The device includes a device shell, a first-level coarse dust removal device, a second-level fine dust removal device, a spray system, a mist removal system, an air outlet and a water tank system. The device has a compact structure, low resistance, and low investment costs. Dust removal, dust removal efficiency is increased, the device can ensure that the outlet discharge concentration is below 5mg/Nm 3 , which meets the national environmental protection requirements; in addition, the device is equipped with an ultrasonic atomizing nozzle, which can reduce the amount of spraying, save water resources, and spray The number of fine liquid droplets produced increases, and its specific surface area increases, which further improves the dust removal efficiency; at the same time, the device is equipped with a sleeve expander, which can adjust the distance between the bottom surface of the flue gas nozzle and the liquid surface according to the load of the flue gas, and expand range of use of this device.
2、本装置的集尘室II的底部与集尘室II内部相连通设有清淤泥口，使用该清淤泥口可以定期对集尘室II内部的淤泥进行清理，延长了其使用寿命。2. The bottom of the dust collection chamber II of the device is connected with the interior of the dust collection chamber II and is provided with a dredging mud port, which can be used to regularly clean the silt inside the dust collection chamber II, prolonging its service life.
3、本装置的集尘室I的液面上方的装置外壳上与集尘室I相连通设置一补水管；所述集水箱的底部一侧的装置外壳上与集水箱内相连通设置一进水管，该进水管上设置一供水阀门，该供水阀门能够打开或关闭进水管的进水。在使用时，可以通过该补水管/供水阀门可以定期对集尘室I/集水箱进行补水，以保证装置稳定地运行。3. A replenishment pipe is arranged on the device casing above the liquid level of the dust collecting chamber 1 of the device to communicate with the dust collecting chamber 1; on the device casing on the bottom side of the water collecting tank, an inlet pipe is connected to the inside of the collecting tank. The water pipe is provided with a water supply valve on the water inlet pipe, and the water supply valve can open or close the water inlet of the water inlet pipe. When in use, the dust chamber I/water collection tank can be regularly replenished with water through the water supply pipe/water supply valve to ensure the stable operation of the device.
附图说明Description of drawings
图1为本发明的一种结构连接示意图。Fig. 1 is a schematic connection diagram of a structure of the present invention.
具体实施方式detailed description
下面结合附图并通过实施例，对本发明做进一步的阐述，下列实施例只是说明性的，不是限定性的，不能以下列所描述的来限定本发明的保护范围。The present invention will be further elaborated below in conjunction with the accompanying drawings and through examples. The following examples are only illustrative, not restrictive, and the protection scope of the present invention cannot be limited by the following descriptions.
本发明中未详细描述的结构、连接关系等，可以理解为本领域的常规技术手段。Structures, connections, etc. that are not described in detail in the present invention can be understood as conventional technical means in the art.
一种湿式分级除尘装置，如图1所示，所述装置包括装置外壳、一级粗除尘装置、二级精除尘装置、喷淋系统、除雾系统12、出气口13和水箱系统，所述一级粗除尘装置设置于装置外壳的底部，所述出气口设置于装置外壳的顶部，所述二级精除尘装置、除雾系统由下至上依次间隔设置于一级粗除尘装置和出气口之间的装置外壳上，所述喷淋系统能够向二级精除尘装置喷淋，所述水箱系统设置于装置外壳外且与一级粗除尘装置相连接设置；A wet classification dedusting device, as shown in Figure 1, said device comprises a device housing, a primary coarse dedusting device, a secondary fine dedusting device, a spray system, a demisting system 12, an air outlet 13 and a water tank system, said The first-level coarse dust removal device is set at the bottom of the device shell, the air outlet is set at the top of the device shell, and the second-level fine dust removal device and the mist removal system are arranged at intervals between the first-level coarse dust removal device and the air outlet from bottom to top. On the device shell between, the spray system can spray to the secondary fine dedusting device, and the water tank system is arranged outside the device shell and connected with the primary coarse dedusting device;
所述一级粗除尘装置包括进气口1、套筒伸缩器2、烟气喷嘴3、集尘室I 4、集气口21，所述集尘室I设置于装置外壳的底部，该集尘室I内盛装有水，该集尘室I上方的装置外壳上与装置外壳相连通设有进气口，该进气口的尾端通过同轴设置的套筒伸缩器连接烟气喷嘴的上端，该烟气喷嘴的底端设置于集尘室I的液面上方，该烟气喷嘴能够向液面喷出冲击水面的烟气，所述进气口上方的装置外壳上设有集气口，该集气口的底部外缘与装置外壳的内壁密封设置在一起；The first-level coarse dedusting device comprises an air inlet 1, a sleeve expander 2, a smoke nozzle 3, a dust collection chamber 14, and a gas collection port 21. The dust collection chamber 1 is arranged at the bottom of the device shell, and the dust collection chamber 1 The chamber I is filled with water, and the device casing above the dust collection chamber I is connected with the device casing to provide an air inlet, and the tail end of the air inlet is connected to the upper end of the smoke nozzle through a coaxially arranged sleeve expander. , the bottom end of the fume nozzle is arranged above the liquid surface of the dust collecting chamber 1, the fume nozzle can spray the flue gas impacting the water surface to the liquid surface, and the device shell above the air inlet is provided with a gas collecting port, The outer edge of the bottom of the air collecting port is sealed with the inner wall of the device casing;
所述水箱系统包括水箱调节阀22、泥浆泵、沉淀水箱和1#循环水泵，所述集尘室I的底部通过水箱调节阀、泥浆泵与沉淀水箱的中上部一侧入口相连通设置，该沉淀水箱的中上部另一侧出口通过1#循环水泵与集尘室I相连接设置，该1#循环水泵能够将沉淀水箱中的水输入集尘室I中；The water tank system includes a water tank regulating valve 22, a mud pump, a sedimentation water tank and a 1# circulating water pump. The bottom of the dust collection chamber 1 is connected to the upper middle and upper side entrance of the sedimentation water tank through the water tank regulating valve and the mud pump. The outlet on the other side of the middle and upper part of the sedimentation water tank is connected to the dust collection chamber I through the 1# circulating water pump, and the 1# circulating water pump can input the water in the sedimentation water tank into the dust collection chamber I;
所述二级精除尘装置包括排浆管8、除尘室9、过烟管道14、集尘室II 15、填料板17和集水箱18，所述集气口的上方设置集水箱，该集水箱与集尘室I不相连通设置，该集水箱的上方设置集尘室II，该集尘室II和集水箱之间同轴设置填料板，该填料板的边缘与装置外壳的内壁密封设置在一起；该集尘室II的上方设置除尘室，该除尘室的顶部外缘与装置外壳的内壁紧密设置在一起，该除尘室的底部同轴紧密连通设置排浆管，该排浆管的底部外侧边缘与装置外壳的内壁密封设置，该排浆管的底部出口与集尘室II相连通设置；所述除尘室中下部一侧紧密连通设置过烟管道的顶部，该过烟管道的底部向下穿过填料板与集气口的顶部紧密相连通设置；The secondary fine dedusting device includes a slurry discharge pipe 8, a dust removal chamber 9, a smoke passage 14, a dust collection chamber II 15, a packing plate 17 and a water collection box 18. A water collection box is arranged above the gas collection port, and the water collection box is connected with The dust collection chamber I is not connected, and the dust collection chamber II is arranged above the water collection box. A packing plate is arranged coaxially between the dust collection chamber II and the water collection box, and the edge of the packing plate is sealed with the inner wall of the device shell. A dust removal chamber is arranged above the dust collection chamber II, and the top outer edge of the dust removal chamber is closely arranged with the inner wall of the device shell, and the bottom of the dust removal chamber is coaxially closely connected with a slurry discharge pipe, and the bottom outside of the slurry discharge pipe The edge is sealed with the inner wall of the device shell, and the bottom outlet of the slurry discharge pipe is connected with the dust collection chamber II; the middle and lower side of the dust removal chamber is closely connected with the top of the smoke passage, and the bottom of the smoke passage is downward Pass through the packing plate and communicate closely with the top of the gas collection port;
所述喷淋系统包括2#循环水泵6、喷淋调节阀7、喷淋管路11和超声波雾化喷嘴10，所述2#循环水泵的输入端与集水箱的底部相连通设置，该2#循环水泵的输出端通过喷淋调节阀与喷淋管路相连接设置，所述喷淋管路的下底面上均布间隔相连通设有多个向下设置的超声波雾化喷嘴；所述喷淋管路和超声波雾化喷嘴间隔设置于除尘室和除雾系统之间的装置外壳上，该超声波雾化喷嘴能够向除尘室喷出微细水雾。The spray system includes 2# circulating water pump 6, spray regulating valve 7, spray pipeline 11 and ultrasonic atomizing nozzle 10, the input end of the 2# circulating water pump is connected with the bottom of the water collection tank, and the 2# #The output end of the circulating water pump is connected to the spray pipeline through the spray regulating valve, and the lower bottom surface of the spray pipeline is evenly distributed and connected with a plurality of ultrasonic atomizing nozzles arranged downward; Spray pipelines and ultrasonic atomizing nozzles are arranged at intervals on the device housing between the dust removal chamber and the demisting system, and the ultrasonic atomization nozzles can spray fine water mist to the dust removal chamber.
本发明装置包括装置外壳、一级粗除尘装置、二级精除尘装置、喷淋系统、除雾系统、出气口和水箱系统，该装置结构紧凑、阻力小、投资成本较低，通过二级除尘，除尘效率增加，该装置能够保证出口排放浓度达到5mg/Nm3以下，符合国家环保要求排放的标准；另外，本装置设置了超声波雾化喷嘴，可以降低喷淋量，节约水资源，喷出的微细液滴颗粒数量增多，其比表面积增大，进一步提高除尘效率；同时，本装置设置了套筒伸缩器，可以根据烟气的负荷调节烟气喷嘴下底面距离液面的距离，扩大了本装置的使用范围。The device of the present invention includes a device shell, a first-level coarse dust removal device, a second-level fine dust removal device, a spray system, a demisting system, an air outlet and a water tank system. The device has a compact structure, small resistance, and low investment cost. , the dust removal efficiency is increased, and the device can ensure that the outlet emission concentration is below 5mg/Nm 3 , which meets the emission standards of the national environmental protection requirements; in addition, the device is equipped with an ultrasonic atomizing nozzle, which can reduce the amount of spraying, save water resources, and spray The number of fine droplet particles increases, and its specific surface area increases, which further improves the dust removal efficiency; at the same time, the device is equipped with a sleeve expander, which can adjust the distance between the bottom surface of the flue gas nozzle and the liquid surface according to the load of the flue gas. The scope of use of this device.
在本实施例中，所述装置还包括引风机，所述引风机与出气口相连接设置，该出气口通过引风机进行出气。In this embodiment, the device further includes an induced fan, and the induced fan is connected to the air outlet, and the air outlet is discharged through the induced fan.
在本实施例中，所述装置外壳为圆形、方形或者椭圆形。In this embodiment, the housing of the device is circular, square or oval.
在本实施例中，所述烟气喷嘴的下底面距离液面的距离为200～1000mm。In this embodiment, the distance between the bottom surface of the flue gas nozzle and the liquid surface is 200-1000 mm.
在本实施例中，所述集气口的顶端直径与过烟管道的底端直径相同，集气口的下底面直径与装置外壳的直径相同。In this embodiment, the diameter of the top of the air collecting port is the same as the diameter of the bottom end of the smoke passage pipe, and the diameter of the bottom surface of the gas collecting port is the same as the diameter of the device casing.
在本实施例中，所述除尘室为倒圆锥型结构且上端面直径与装置外壳的直径相同，下底面的直径与排浆管道的直径相同；所述集尘室II的底部与集尘室II内部相连通设有清淤泥口16，使用该清淤泥口可以定期对集尘室II内部的淤泥进行清理，延长了其使用寿命。In this embodiment, the dust removal chamber has an inverted conical structure and the diameter of the upper end surface is the same as the diameter of the device casing, and the diameter of the lower bottom surface is the same as the diameter of the slurry discharge pipe; the bottom of the dust collection chamber II is the same as the diameter of the dust collection chamber The interior of II is connected with a dredging mud port 16, and the mud in the dust collecting chamber II can be cleaned regularly by using the dredging mud port, which prolongs its service life.
在本实施例中，所述集尘室I的液面上方的装置外壳上与集尘室I相连通设置一补水管5；所述集水箱的底部一侧的装置外壳上与集水箱内相连通设置一进水管19，该进水管上设置一供水阀门20，该供水阀门能够打开或关闭进水管的进水。在使用时，可以通过该补水管/供水阀门可以定期对集尘室I/集水箱进行补水，以保证装置稳定地运行。In this embodiment, a replenishment pipe 5 is arranged on the device housing above the liquid level of the dust collecting chamber 1 to communicate with the dust collecting chamber 1; the device housing on the bottom side of the water collecting tank is connected to the inside of the water collecting tank A water inlet pipe 19 is arranged, and a water supply valve 20 is arranged on the water inlet pipe, and the water supply valve can open or close the water inlet of the water inlet pipe. When in use, the dust chamber I/water collection tank can be regularly replenished with water through the water supply pipe/water supply valve to ensure the stable operation of the device.
本装置在使用时，一级粗除尘装置中集尘室I中的含尘浆液可以通过泥浆泵进入到沉淀水箱，上清液通过1#循环水泵进入到集尘室I；二级精除尘装置中集尘室II中的浆液通过填料板过滤后进入到集水箱，集水箱中清液通过2#循环水泵进入到除尘室，水资源可以达到充分循环利用，随着装置的运行一段时间后，定期清理集尘室II和沉淀水箱中的淤泥，集水箱和集尘室I定期可以通过外接管道进行补水，以保证装置稳定地运行。When the device is in use, the dust-containing slurry in the dust collection chamber I of the first-level coarse dust removal device can enter the sedimentation water tank through the mud pump, and the supernatant enters the dust collection chamber I through the 1# circulating water pump; the second-level fine dust removal device The slurry in the middle dust collection chamber II is filtered through the packing plate and enters the water collection tank. The clear liquid in the water collection tank enters the dust removal chamber through the 2# circulating water pump, and the water resources can be fully recycled. After a period of operation of the device, Regularly clean up the sludge in the dust collection chamber II and the settling water tank, and the water collection tank and dust collection chamber I can be supplemented regularly through external pipes to ensure the stable operation of the device.
本发明湿式分级除尘装置的工作原理是：The working principle of the wet classification dedusting device of the present invention is:
含尘烟气通过进气口经过喷嘴喷出的烟气冲击水面，使水面激起大量的水滴和泡沫，随着烟气方面的改变，大部分湿水烟尘颗粒沉留在水中。经过一级粗除尘净化后的烟气夹带着一部分水滴和被水滴吸附的烟尘到达集气口进入过烟管道，进入过烟管道的烟气流速增加，进入到除尘室变成高速旋转上升的气流，上端超声波雾化喷嘴喷出微细水雾与烟尘颗粒碰撞、凝聚，微细粉尘被液滴补集并靠离心力作用被甩到除尘室壁上被液膜补集，净化后的烟气经过除雾器除去水滴，最后经出气口（例如，出气口可以通过引风机进行出气）排入大气。本装置可用于含尘烟气的处理中。The dust-laden flue gas passes through the air inlet and the flue gas ejected from the nozzle hits the water surface, causing a large number of water droplets and foam to be aroused on the water surface. With the change of the flue gas, most of the wet water soot particles settle in the water. After the first-level coarse dust removal and purification, the flue gas entrains a part of the water droplets and the smoke dust absorbed by the water droplets to the gas collection port and enters the flue gas pipe. The upper end of the ultrasonic atomizing nozzle ejects fine water mist that collides and condenses with the smoke particles. The fine dust is collected by the liquid droplets and thrown to the wall of the dust removal chamber by the centrifugal force to be collected by the liquid film. The purified smoke passes through the demister. Remove the water droplets, and finally discharge into the atmosphere through the air outlet (for example, the air outlet can be discharged through an induced draft fan). The device can be used in the treatment of dusty flue gas.
Claims (8)
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