CN204676112U - Converter dedusting line - Google Patents
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- CN204676112U CN204676112U CN201520224348.9U CN201520224348U CN204676112U CN 204676112 U CN204676112 U CN 204676112U CN 201520224348 U CN201520224348 U CN 201520224348U CN 204676112 U CN204676112 U CN 204676112U
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- 238000005406 washing Methods 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 241001504664 Crossocheilus latius Species 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 41
- 238000009834 vaporization Methods 0.000 abstract description 17
- 230000008016 vaporization Effects 0.000 abstract description 17
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 34
- 239000003546 flue gas Substances 0.000 description 32
- 239000007789 gas Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000009628 steelmaking Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
本实用新型是有关于一种转炉除尘系统，该转炉除尘系统设置于转炉汽化冷却烟道和煤气风机之间，且该转炉除尘系统的入口与转炉汽化冷却烟道的出口连接，所述转炉除尘系统的出口与煤气风机的入口连接；该转炉除尘系统包括：第一洗涤塔、第二洗涤塔、文氏管以及旋流脱水器；所述第一洗涤塔的入口与转炉汽化冷却烟道的出口固定连接，所述第一洗涤塔的出口与第二洗涤塔的入口固定连接；所述第二洗涤塔的出口与文氏管的入口固定连接；所述文氏管的出口与旋流脱水器的入口固定连接；所述旋流脱水器的出口与所述煤气风机的入口固定连接。本实用新型提供的技术方案在能够满足更高国家环保标准的同时，还具有控制简单且使用成本低等优点。
The utility model relates to a converter dust removal system. The converter dust removal system is arranged between a converter vaporization cooling flue and a gas fan, and the inlet of the converter dust removal system is connected with the outlet of the converter vaporization cooling flue. The converter dust removal system The outlet of the system is connected to the inlet of the gas blower; the converter dedusting system includes: the first scrubber, the second scrubber, a venturi tube and a cyclone dehydrator; the inlet of the first scrubber is connected to the converter vaporization cooling flue The outlet is fixedly connected, the outlet of the first washing tower is fixedly connected with the inlet of the second washing tower; the outlet of the second washing tower is fixedly connected with the inlet of the Venturi tube; the outlet of the Venturi tube is connected with the cyclone dehydration The inlet of the device is fixedly connected; the outlet of the cyclone dehydrator is fixedly connected with the inlet of the gas blower. The technical solution provided by the utility model not only can meet higher national environmental protection standards, but also has the advantages of simple control and low use cost.
Description
技术领域technical field
本实用新型涉及除尘技术，特别是涉及一种转炉除尘系统。The utility model relates to dust removal technology, in particular to a converter dust removal system.
背景技术Background technique
转炉在炼钢过程中会产生大量的烟气，该烟气由于其含有大量的一氧化碳而可以被再利用，如用作煤气等。然而，由于该烟气中含有大量的粉尘，因此，在对烟气进行再利用之前必须对烟气进行除尘处理。The converter produces a large amount of flue gas during the steelmaking process, and the flue gas can be reused, such as used as gas, because it contains a large amount of carbon monoxide. However, since the flue gas contains a large amount of dust, the flue gas must be dedusted before the flue gas is reused.
目前，转炉除尘系统所采用的工艺主要包括干法除尘工艺、湿法除尘工艺以及半干法除尘工艺。At present, the processes used in the converter dedusting system mainly include dry dedusting process, wet dedusting process and semi-dry dedusting process.
干法除尘工艺具有节水节电等优点，但是，其存在除尘投资大、在中小转炉烟气净化系统中应用时运行不稳定以及易发生爆炸等问题。The dry dedusting process has the advantages of saving water and electricity, but it has problems such as large investment in dedusting, unstable operation and prone to explosion when applied in small and medium-sized converter flue gas purification systems.
湿法除尘工艺可以由多种除尘系统实现，如OG湿法除尘系统、塔文一体湿法除尘系统以及塔文湿法除尘系统等。OG湿法除尘系统于二十世纪七十年代从日本引进，该系统的技术已经相对落后，且该系统无法达到国家环保标准。塔文一体湿法除尘系统于近几年从日本引进，一部分系统可以达到国家环保标准，但是，其存在能耗大以及检修频繁等问题。塔文湿法除尘系统是我国国内的自主技术，目前该系统能较好的达到国家环保标准。The wet dedusting process can be realized by a variety of dedusting systems, such as the OG wet dedusting system, the Tawen integrated wet dedusting system, and the Tawen wet dedusting system. The OG wet dust removal system was introduced from Japan in the 1970s. The technology of this system is relatively backward, and the system cannot meet the national environmental protection standards. The Tavan integrated wet dust removal system was introduced from Japan in recent years, and some systems can meet the national environmental protection standards, but there are problems such as large energy consumption and frequent maintenance. Tavin's wet dust removal system is an independent technology in my country. At present, the system can better meet the national environmental protection standards.
半干法除尘工艺通常是在塔文湿法除尘系统前再增加一个出干灰的蒸发塔，蒸发塔的除尘效率通常能达到30-40％左右，因此，该工艺比塔文湿法除尘系统的除尘净化效果更好，但是，其存在蒸发塔检修较频繁、蒸发塔控制要求较严格以及蒸发塔故障率较高等问题。The semi-dry dedusting process usually adds an evaporation tower for dry ash before the Tavin wet dedusting system. The dedusting efficiency of the evaporation tower can usually reach about 30-40%. Therefore, this process is more efficient than the Tavin wet dedusting system. The dust removal and purification effect is better, but there are problems such as more frequent maintenance of the evaporation tower, stricter control requirements of the evaporation tower, and a higher failure rate of the evaporation tower.
有鉴于现有的转炉除尘技术存在的问题，本发明人基于从事此类产品的设计制造的多年丰富的实务经验及专业知识，并配合学理的运用，积极加以研究创新，以期创设一种新型结构的转炉除尘系统，使其更具有实用性。经过不断的研究设计，并经过反复试作样品及改进，终于创设出确具实用价值的本实用新型。In view of the problems existing in the existing converter dedusting technology, the inventor, based on years of rich practical experience and professional knowledge engaged in the design and manufacture of this type of product, and in conjunction with the application of academic theory, actively researched and innovated, in order to create a new type of structure The advanced converter dust removal system makes it more practical. Through continuous research and design, and through repeated trial samples and improvements, the utility model with practical value is finally created.
实用新型内容Utility model content
本实用新型的目的在于，提供一种转炉除尘系统，所要解决的技术问题包括，在能够满足更高国家环保标准的同时，避免转炉除尘系统的检修量较高以及控制要求严格等问题，以提高转炉除尘系统的可控性，并降低转炉除尘系统的使用成本。The purpose of this utility model is to provide a converter dedusting system. The technical problems to be solved include, while meeting higher national environmental protection standards, avoiding the problems of high maintenance and strict control requirements of the converter dedusting system, so as to improve The controllability of the converter dust removal system, and reduce the use cost of the converter dust removal system.
本实用新型的目的及解决其技术问题可采用以下的技术方案来实现。The purpose of this utility model and the solution to its technical problems can be realized by adopting the following technical solutions.
依据本实用新型提出的一种转炉除尘系统，包括：所述转炉除尘系统设置于转炉汽化冷却烟道和煤气风机之间，且所述转炉除尘系统的入口与转炉汽化冷却烟道的出口连接，所述转炉除尘系统的出口与煤气风机的入口连接；所述转炉除尘系统包括：第一洗涤塔、第二洗涤塔、文氏管以及旋流脱水器；所述第一洗涤塔的入口与转炉汽化冷却烟道的出口固定连接,所述第一洗涤塔的出口与第二洗涤塔的入口固定连接；所述第二洗涤塔的出口与文氏管的入口固定连接；所述文氏管的出口与旋流脱水器的入口固定连接；所述旋流脱水器的出口与所述煤气风机的入口固定连接。A converter dedusting system proposed according to the utility model includes: the converter dedusting system is arranged between the converter vaporization cooling flue and the gas fan, and the inlet of the converter dedusting system is connected to the outlet of the converter vaporization cooling flue, The outlet of the converter dedusting system is connected to the inlet of the gas blower; the converter dedusting system includes: a first washing tower, a second washing tower, a venturi tube and a cyclone dehydrator; the inlet of the first washing tower is connected to the converter The outlet of the vaporization cooling flue is fixedly connected, the outlet of the first scrubber is fixedly connected with the inlet of the second scrubber; the outlet of the second scrubber is fixedly connected with the inlet of the Venturi tube; The outlet is fixedly connected with the inlet of the cyclone dehydrator; the outlet of the cyclone dehydrator is fixedly connected with the inlet of the gas blower.
较佳的，前述的转炉除尘系统，其中，所述第一洗涤塔的入口与转炉汽化冷却烟道的出口之间通过法兰固定连接。Preferably, the aforementioned converter dedusting system, wherein, the inlet of the first washing tower is fixedly connected to the outlet of the converter vaporization cooling flue through a flange.
较佳的，前述的转炉除尘系统，其中，所述第一洗涤塔包括：喷雾洗涤塔。Preferably, the aforementioned converter dedusting system, wherein, the first scrubber includes: a spray scrubber.
较佳的，前述的转炉除尘系统，其中，所述喷雾洗涤塔中设置有多个喷嘴，且所述多个喷嘴沿喷雾洗涤塔的高度方向呈多层环状设置方式或者呈螺旋状设置方式。Preferably, the aforementioned converter dedusting system, wherein, the spray scrubber is provided with a plurality of nozzles, and the plurality of nozzles are arranged in a multi-layer ring or spiral arrangement along the height direction of the spray scrubber .
较佳的，前述的转炉除尘系统，其中，所述第二洗涤塔的入口与第一洗涤塔的出口之间通过法兰固定连接。Preferably, in the aforementioned converter dedusting system, wherein, the inlet of the second washing tower is fixedly connected to the outlet of the first washing tower through a flange.
较佳的，前述的转炉除尘系统，其中，所述第二洗涤塔包括：喷雾洗涤塔。Preferably, the aforementioned converter dedusting system, wherein, the second scrubber includes: a spray scrubber.
较佳的，前述的转炉除尘系统，其中，所述喷雾洗涤塔中设置有多个喷嘴，且所述多个喷嘴沿喷雾洗涤塔的高度方向呈多层环状设置方式或者呈螺旋状设置方式。Preferably, the aforementioned converter dedusting system, wherein, the spray scrubber is provided with a plurality of nozzles, and the plurality of nozzles are arranged in a multi-layer ring or spiral arrangement along the height direction of the spray scrubber .
较佳的，前述的转炉除尘系统，其中，所述文氏管包括：上行式环缝文氏管。Preferably, the aforementioned converter dedusting system, wherein, the venturi tube includes: an ascending circular seam venturi tube.
较佳的，前述的转炉除尘系统，其中，所述转炉除尘系统还包括：液压系统，与所述文氏管连接，以推动所述文氏管中的重砣。Preferably, the aforementioned converter dust removal system, wherein, the converter dust removal system further includes: a hydraulic system connected with the venturi tube to push the weight in the venturi tube.
借由上述技术方案，本实用新型的转炉除尘系统至少具有下列优点以及有益效果：本实用新型通过在转炉汽化冷却烟道和煤气风机之间设置第一洗涤塔、第二洗涤塔、文氏管以及旋流脱水器，这样，从转炉汽化冷却烟道出来的烟气在经过第一洗涤塔和第二洗涤塔之后，其除尘效率通常可以达到97％甚至更高；从第二洗涤塔出来的烟气在经过文氏管以及旋流脱水器之后，其除尘效率通常可以达到99.5％甚至更高，从而通过转炉炼钢的放散烟囱放散出的烟气中的粉尘含量远远小于50mg/m3；由于本实用新型中的洗涤塔无论是在检修方面还是在控制方面都具有一定的优势，因此，本实用新型的转炉除尘系统的检修量小且易于控制；最终本实用新型的转炉除尘系统在能够满足更高国家环保标准的同时，还具有控制简单且使用成本低等优点。By virtue of the above-mentioned technical scheme, the converter dedusting system of the present invention has at least the following advantages and beneficial effects: The present utility model arranges the first scrubber, the second scrubber, and the venturi tube between the converter vaporization cooling flue and the gas blower. And the cyclone dehydrator, so that the dust removal efficiency of the flue gas from the converter vaporization cooling flue can usually reach 97% or even higher after passing through the first scrubber and the second scrubber; the flue gas from the second scrubber After the flue gas passes through the Venturi tube and the cyclone dehydrator, its dust removal efficiency can usually reach 99.5% or even higher, so the dust content in the flue gas released through the vent chimney of converter steelmaking is far less than 50mg/ m3 ; Because the washing tower in the utility model has certain advantages in maintenance and control, the maintenance amount of the converter dedusting system of the present utility model is small and easy to control; finally the converter dedusting system of the present utility model is in While being able to meet higher national environmental protection standards, it also has the advantages of simple control and low cost of use.
综上所述，本实用新型在技术上有显著的进步，并具有明显的积极技术效果，诚为一新颖、进步、实用的新设计。To sum up, the utility model has significant progress in technology, and has obvious positive technical effects. It is a novel, progressive and practical new design.
上述说明仅是本实用新型技术方案的概述，为了能够更清楚了解本实用新型的技术手段，而可依照说明书的内容予以实施，并且为了让本实用新型的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例,并配合说明书附图,详细说明如下。The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings in the description, and the detailed description is as follows.
附图说明Description of drawings
图1为包含有本实用新型的转炉除尘系统的转炉炼钢系统结构示意图。Fig. 1 is a schematic structural diagram of a converter steelmaking system including a converter dedusting system of the present invention.
具体实施方式Detailed ways
为更进一步阐述本实用新型为达成预定实用新型目的所采取的技术手段及功效，以下结合附图以及较佳实施例，对依据本实用新型提出的转炉除尘系统其具体实施方式、结构及特征，详细说明如后。In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the specific implementation, structure and characteristics of the converter dust removal system proposed according to the utility model will be described below in conjunction with the accompanying drawings and preferred embodiments. Details are as follows.
本实用新型的转炉除尘系统设置于转炉炼钢系统中的转炉汽化冷却烟道和煤气风机之间，具体的，该转炉除尘系统的入口与转炉汽化冷却烟道的出口连接，且转炉除尘系统的出口与煤气风机的入口连接。The converter dedusting system of the present utility model is arranged between the converter vaporization cooling flue and the gas fan in the converter steelmaking system. Specifically, the inlet of the converter dedusting system is connected with the outlet of the converter vaporization cooling flue, and the converter dedusting system The outlet is connected with the inlet of the gas blower.
本实用新型的转炉除尘系统应用于转炉炼钢系统中的一个具体的例子如图1所示。A specific example of the converter dust removal system of the present invention applied to the converter steelmaking system is shown in Figure 1 .
图1中的转炉炼钢系统主要包括：转炉10、转炉汽化冷却烟道20(下述简称为汽化冷却烟道20)、转炉除尘系统、煤气风机30、旁通阀40、三通阀50、放散烟囱60、水封逆止阀70、V型水封阀80以及煤气柜90。The converter steelmaking system in Fig. 1 mainly includes: converter 10, converter vaporization cooling flue 20 (hereinafter referred to as vaporization cooling flue 20), converter dust removal system, gas blower 30, bypass valve 40, three-way valve 50, Diffuse chimney 60, water seal check valve 70, V-type water seal valve 80 and gas cabinet 90.
在图1所示的转炉炼钢系统中，汽化冷却烟道20的一端与转炉10连接，另一端与本实用新型的转炉除尘系统连接；本实用新型的转炉除尘系统还与煤气风机30连接；煤气风机30还与旁通阀40、三通阀50以及水封逆止阀70分别连接，旁通阀40和三通阀50还分别与放散烟囱60连接，V型水封阀80的一端与水封逆止阀70连接，另一端与煤气柜90连接。In the converter steelmaking system shown in Figure 1, one end of the vaporization cooling flue 20 is connected to the converter 10, and the other end is connected to the converter dedusting system of the present invention; the converter dedusting system of the present invention is also connected to the gas blower 30; The gas blower 30 is also connected with the bypass valve 40, the three-way valve 50 and the water seal check valve 70 respectively, the bypass valve 40 and the three-way valve 50 are also connected with the discharge chimney 60 respectively, and one end of the V-shaped water seal valve 80 is connected with the The water seal check valve 70 is connected, and the other end is connected with the gas tank 90 .
由图1示出的转炉炼钢系统可知，从转炉10中排出的烟气在经过汽化冷却烟道20的冷却后进入本实用新型的转炉除尘系统中，由本实用新型的转炉除尘系统对进入的烟气进行除尘处理，经除尘处理后烟气在煤气风机30的作用下进入后续的管道，在进入后续的管道的烟气中的煤气的含量满足一定要求时，烟气经过三通阀50、水封逆止阀70以及V型水封阀80进入煤气柜90中存储，在进入后续的管道的烟气中的煤气的含量不能满足一定要求时，烟气经过旁通阀40以及三通阀50进入放散烟囱60，并由放散烟囱60放散到大气中。From the converter steelmaking system shown in Figure 1, it can be known that the flue gas discharged from the converter 10 enters the converter dedusting system of the present invention after being cooled by the vaporization cooling flue 20, and the converter dedusting system of the present invention treats the incoming The flue gas is subjected to dust removal treatment. After the dust removal treatment, the flue gas enters the subsequent pipeline under the action of the gas blower 30. When the content of the gas in the flue gas entering the subsequent pipeline meets certain requirements, the flue gas passes through the three-way valve 50, The water-sealed check valve 70 and the V-shaped water-sealed valve 80 are stored in the gas cabinet 90. When the gas content in the flue gas entering the subsequent pipeline cannot meet certain requirements, the flue gas passes through the bypass valve 40 and the three-way valve. 50 enters the release chimney 60, and is released into the atmosphere by the release chimney 60.
图1中的转炉除尘系统主要包括：第一洗涤塔1、第二洗涤塔2、文氏管3、旋流脱水器4以及液压系统5；其中，第一洗涤塔1的入口与汽化冷却烟道20的出口固定连接，第一洗涤塔1的出口与第二洗涤塔2的入口固定连接；第二洗涤塔2的出口与文氏管3的入口固定连接，文氏管3的出口与旋流脱水器4的入口固定连接，旋流脱水器4的出口与煤气风机30的入口固定连接；液压系统5与文氏管3中的重砣连接。The converter dedusting system in Fig. 1 mainly includes: the first washing tower 1, the second washing tower 2, the venturi tube 3, the cyclone dehydrator 4 and the hydraulic system 5; The outlet of road 20 is fixedly connected, and the outlet of the first scrubber 1 is fixedly connected with the inlet of the second scrubber 2; The outlet of the second scrubber 2 is fixedly connected with the inlet of the venturi tube 3, and the outlet of the venturi tube 3 is connected with the rotary The inlet of the flow dehydrator 4 is fixedly connected, the outlet of the cyclone dehydrator 4 is fixedly connected with the inlet of the gas blower 30 ; the hydraulic system 5 is connected with the weight in the venturi tube 3 .
第一洗涤塔1主要用于对汽化冷却烟道20排出的烟气进行第一道除尘处理。另外，第一洗涤塔1还可以对烟气进行降温，如第一洗涤塔1入口处的烟气的温度如果为900℃左右，则第一洗涤塔1的出口处的烟气的温度通常约为72℃左右。该第一洗涤塔1可以具体为喷雾洗涤塔，如现有的高效喷雾洗涤塔等。该喷雾洗涤塔的入口与汽化冷却烟道的出口之间可以通过法兰固定连接。该喷雾洗涤塔中设置有多个用于喷水的喷嘴，且所有的喷嘴可以采用沿喷雾洗涤塔的高度方向呈多层环状的设置方式，也可以采用呈螺旋状上旋的设置方式。The first washing tower 1 is mainly used for performing the first dust removal treatment on the flue gas discharged from the vaporization cooling flue 20 . In addition, the first scrubber 1 can also lower the temperature of the flue gas. For example, if the temperature of the flue gas at the entrance of the first scrubber 1 is about 900°C, the temperature of the flue gas at the outlet of the first scrubber 1 is usually about It is about 72°C. The first scrubber 1 may specifically be a spray scrubber, such as an existing high-efficiency spray scrubber. The inlet of the spray scrubber and the outlet of the vaporization cooling flue can be fixedly connected by a flange. The spray scrubber is provided with a plurality of nozzles for spraying water, and all the nozzles can be arranged in a multi-layer ring along the height direction of the spray scrubber, or can be arranged in a spiral upward rotation.
经实地检测，本实用新型的第一洗涤塔1的除尘效率通常可以达到85-90％之间，如果进入第一洗涤塔1的烟气的粉尘含量为150g/m3，则第一洗涤塔1排出的烟气的粉尘含量通常为22.5g/m3至15g/m3之间。Through on-the-spot testing, the dust removal efficiency of the first washing tower 1 of the present utility model can usually reach between 85-90%. If the dust content of the flue gas entering the first washing tower 1 is 150g/m 3 , the first washing tower 1 The dust content of the exhausted flue gas is usually between 22.5g/ m3 and 15g/ m3 .
第二洗涤塔2主要用于对第一洗涤塔1排出的烟气进行第二道除尘处理。另外，第二洗涤塔2还可以对烟气进行进一步的降温。该第二洗涤塔2可以具体为喷雾洗涤塔，如现有的高效喷雾洗涤塔等。该喷雾洗涤塔的入口与第一洗涤塔1的出口之间可以通过法兰固定连接。该喷雾洗涤塔中设置有多个用于喷水的喷嘴，且所有的喷嘴可以采用沿喷雾洗涤塔的高度方向呈多层环状的设置方式，也可以采用呈螺旋状上旋的设置方式。The second washing tower 2 is mainly used for the second dust removal treatment on the flue gas discharged from the first washing tower 1 . In addition, the second washing tower 2 can further lower the temperature of the flue gas. The second scrubber 2 may specifically be a spray scrubber, such as an existing high-efficiency spray scrubber. The inlet of the spray scrubber and the outlet of the first scrubber 1 can be fixedly connected by a flange. The spray scrubber is provided with a plurality of nozzles for spraying water, and all the nozzles can be arranged in a multi-layer ring along the height direction of the spray scrubber, or can be arranged in a spiral upward rotation.
经实地检测，本实用新型的第二洗涤塔2的除尘效率通常可以达到80-85％之间，续前例，如果进入第二洗涤塔2的烟气的粉尘含量为22.5g/m3至15g/m3之间，则第二洗涤塔2排出的烟气的粉尘含量通常为4.5g/m3至2.25g/m3之间。Through on-the-spot testing, the dust removal efficiency of the second washing tower 2 of the present utility model can usually reach between 80-85%, and the previous example continues, if the dust content of the flue gas entering the second washing tower 2 is 22.5g/m 3 to 15g /m 3 , the dust content of the flue gas discharged from the second washing tower 2 is usually between 4.5g/m 3 and 2.25g/m 3 .
文氏管3主要用于对第二洗涤塔2排出的烟气进行进一步的除尘处理(如精除尘处理)。另外，文氏管3还可以在液压系统的作用下使转炉炉口的微差压维持在一定的范围内，例如，液压系统4中的液压油缸的活塞杆可以对文氏管3中的重砣施加相应的推力，使文氏管3的喉口开度与预期的开度相符合，这样，转炉炉口的微差压可以维持在一定的范围内，避免了转炉炉口的溢烟现象，从而有利于一氧化碳的回收，有利于转炉除尘液压系统合理且安全地运行。Venturi tube 3 is mainly used for further dust removal treatment (such as fine dust removal treatment) on the flue gas discharged from the second washing tower 2 . In addition, the Venturi tube 3 can also maintain the differential pressure at the furnace mouth of the converter within a certain range under the action of the hydraulic system. The mound applies a corresponding thrust to make the throat opening of the venturi tube 3 conform to the expected opening, so that the differential pressure at the converter mouth can be maintained within a certain range, and the smoke overflow phenomenon at the converter mouth can be avoided , which is conducive to the recovery of carbon monoxide and the reasonable and safe operation of the converter dedusting hydraulic system.
本实用新型中的文氏管3最好采用上行式环缝文氏管(如上行式长径环缝文氏管)，该上行式环缝文氏管(如上行式长径环缝文氏管)通过利用其喉口的高速气流冲击雾化水可以达到很好的除尘效果。The Venturi tube 3 in the utility model preferably adopts the ascending type annular seam Venturi tube (as the ascending type long-diameter annular seam Venturi pipe), Tube) can achieve a good dust removal effect by using the high-speed airflow at its throat to impact the atomized water.
旋流脱水器4主要用于对文氏管3排出的烟气中充分与粉尘混合的液滴脱除，以达到进一步除尘的目的。本实用新型中的旋流脱水器4可以采用复合旋流脱水器，即内部设置有挡板的旋流脱水器。The cyclone dehydrator 4 is mainly used to remove the liquid droplets fully mixed with dust in the flue gas discharged from the venturi tube 3, so as to achieve the purpose of further dust removal. The cyclone dehydrator 4 in the utility model can adopt a composite cyclone dehydrator, that is, a cyclone dehydrator with a baffle inside.
液压系统5主要用于推动文氏管3中的重砣，使文氏管3的喉口的开度可调节。The hydraulic system 5 is mainly used to push the weight in the venturi tube 3 so that the opening of the throat of the venturi tube 3 can be adjusted.
经实地检测，本实用新型的上行式环缝文氏管(如上行式长径环缝文氏管)和旋流脱水器的除尘效率通常可以达到99.5％以上，续前例，如果进入上行式环缝文氏管(如上行式长径环缝文氏管)的烟气的粉尘含量为4.5g/m3至2.25g/m3之间，则经过上行式环缝文氏管(如上行式长径环缝文氏管)和旋流脱水器后而排出的烟气的粉尘含量通常为22.5mg/m3甚至更低，远远小于目前国家规定的排出的烟气的粉尘含量不应超过50mg/m3的要求。Through on-the-spot testing, the dust removal efficiency of the ascending annular venturi tube of the utility model (such as the ascending long-diameter annular venturi) and the cyclone dehydrator can usually reach more than 99.5%. The dust content of the flue gas in the slotted venturi tube (such as the upward long-diameter annular seam venturi tube) is between 4.5g/ m3 and 2.25g/ m3 , and then passes through the upward type annular seam venturi tube (such as the upward type The dust content of the flue gas discharged after the long-diameter annular seam Venturi tube) and the cyclone dehydrator is usually 22.5mg/m 3 or even lower, which is far less than the current national regulations that the dust content of the discharged flue gas should not exceed 50mg/m 3 requirement.
以上所述仅是本实用新型的较佳实施例而已，并非对本实用新型作任何形式上的限制，虽然本实用新型已以较佳实施例揭示如上，然而并非用以限定本实用新型的技术，任何熟悉本专业的技术人员在不脱离本实用新型技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本实用新型技术方案的内容，依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本实用新型技术方案的范围内。The above descriptions are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the technology of the utility model. Any skilled person familiar with this profession can use the technical content disclosed above to make some changes or modify equivalent embodiments without departing from the technical solution of the utility model within the scope of the technical solution of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.
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