WO2021128495A1 - 一种适用于船舶废气洗涤塔的高效旋流塔盘 - Google Patents

一种适用于船舶废气洗涤塔的高效旋流塔盘 Download PDF

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Publication number
WO2021128495A1
WO2021128495A1 PCT/CN2020/071276 CN2020071276W WO2021128495A1 WO 2021128495 A1 WO2021128495 A1 WO 2021128495A1 CN 2020071276 W CN2020071276 W CN 2020071276W WO 2021128495 A1 WO2021128495 A1 WO 2021128495A1
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Prior art keywords
swirl
exhaust gas
swirling
tray
connecting plate
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PCT/CN2020/071276
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English (en)
French (fr)
Inventor
王德智
郑浣琪
沈海涛
王汝能
王兴如
沈敏强
余国成
仲亚
汪成
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浙江浙能迈领环境科技有限公司
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Publication of WO2021128495A1 publication Critical patent/WO2021128495A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

Definitions

  • the invention relates to the field of desulfurization and environmental protection equipment, in particular to ship waste gas treatment scrubber equipment.
  • Ship desulfurization technology mainly absorbs pollutant gas through scrubbers. Its main working principle is: the flue gas enters the scrubber tower and reacts with the sprayed absorbent, the harmful gas and particulate matter contained in it are absorbed by the absorbent, and the flue gas is discharged to the atmosphere through the demister after purification. Therefore, the purification effect of the scrubber is directly related to whether the entire desulfurization equipment meets the standard.
  • washing towers used are spray towers, packed towers, sieve trays, etc. Most of them are packed towers. Although the structure of the packed towers is simple, the packing is easy to block. When cleaning and repairing, the packing loss is large, and the blockage probability increases greatly under the dry burning condition.
  • the pressure drop of the sieve tray is relatively large and the operating flexibility is small, and the operation is usually difficult to adjust.
  • the main purification effect of the spray tower is too dependent on the performance of the nozzle. To achieve a better atomization effect, it is usually necessary to use a smaller nozzle, which increases the risk of nozzle clogging.
  • the absorption efficiency of the scrubber is mainly related to the reaction time of the flue gas and the absorbent, the contact area of the flue gas and the absorbent, and the pressure loss of the flue gas.
  • the absorption efficiency of the existing scrubber still needs to be improved.
  • the present invention provides a high-efficiency cyclone tray suitable for ship exhaust gas scrubbers, which has the purpose of desulfurization treatment of ship exhaust gas. This solution improves the efficiency of flue gas purification while reducing the pressure loss of flue gas.
  • the present invention adopts the following technical solutions:
  • a high-efficiency cyclone tray suitable for ship exhaust gas scrubbing towers comprising a connecting plate and a plurality of swirling components placed on the connecting plate; wherein a number of through holes are provided on the connecting plate, and the swirling component includes an outer cylinder, an inner cylinder, and The swirl vane is arranged on the outer peripheral wall of the inner cylinder, and the bottom of the outer cylinder is provided with a drainage inlet for the absorbent to pass through.
  • the connecting plate is provided with mounting holes matching the swirling components, a plurality of swirling components are symmetrically installed on the connecting plate, the swirling components include peripheral swirling components placed on the inner peripheral wall of the swirling tray, and The internal swirl component near the center of the swirl tray.
  • the peripheral swirling component is provided with a drainage component for the absorbent to pass through.
  • the drainage component includes a drainage tube and an annular tube placed on the inner wall of the outer cylinder. One end of the drainage tube is arranged on the outside of the outer cylinder and extends outward. The other end is connected with the ring tube.
  • a plurality of circular holes are provided on the side of the ring tube close to the swirl blades, the plurality of circular holes are provided on the inner peripheral wall of the ring tube and are spaced apart from each other along the circumferential direction of the ring tube, and the lower end of the ring tube is provided with a drain hole .
  • the swirl vane further includes a plurality of vanes spaced apart from each other in the circumferential direction of the inner cylinder, wherein the vane includes a vane body and a curved portion, wherein the inner end of the vane body is connected to the outer peripheral wall of the inner cylinder, and the curved portion The inner end is connected to the end of the blade body, and the bending angle of the middle section of the blade body is 5-15°.
  • a sealing plate is provided on the upper and/or bottom of the inner cylinder, and the sealing plate is used to prevent the flue gas from directly passing through the inner cylinder and reacting with the absorbent.
  • the diameter of the outer cylinder is 400-800 mm, and the diameter of the inner cylinder is 30-60 mm.
  • the diameter of the circular holes of the annular tube is 6-12 mm, and the distance between the circular holes is 80-120 mm.
  • the number of swirl components is not less than five.
  • the high-efficiency cyclone tray is applied to a ship exhaust gas washing system.
  • the present invention has the following characteristics and beneficial effects:
  • the flue gas will form multiple cyclones with the same rotation direction when passing through the tray, increase the residence time of flue gas inside the scrubber, make the reaction time of flue gas and absorbent longer, and improve the smoke Gas purification effect.
  • the sprayed absorbent is broken into smaller droplets, which increases the contact area between the flue gas and the absorbent, and improves the desulfurization efficiency of the exhaust gas.
  • the pressure drop of the flue gas through the cyclone tray is smaller.
  • the flow rate of flue gas through the cyclone tower is higher than that of the packed tower.
  • the higher the flow rate the more obvious the swirl effect of flue gas through the tray.
  • the height of the cyclone tower can be appropriately reduced, thereby reducing the manufacturing cost of the scrubber, and making it easier to install and maintain, especially the scrubber for ships. Due to the limited structural space of ships, the use of swirl
  • the tray structure can reduce the height of the scrubber, reduce the weight of the scrubber, and reduce the impact of the weight of the scrubber on the navigation safety of the hull.
  • the flue gas can react effectively at both high and low flow rates. Compared with packed towers, there will be no flooding on the trays. The design safety factor of the tower is small. In addition, in the absorbent composition, even if there are solid suspensions with large particles There is no danger of clogging of the tray. For the working conditions of dry burning, the swirling tray can also operate well, and the system operation is safer and more reliable.
  • the swirling flow tray is composed of various swirling components and connecting plates, which is simple to install, convenient to maintain, and reduces the cost of engineering installation and maintenance.
  • the middle section of the blade is bent to form a certain angle. Through the bending angle, not only the resistance loss of the flue gas can be adjusted, but the washed absorbent will also be buffered on the tray to increase the reaction time of the absorbent and the flue gas.
  • the type of flap at the end of the blade can effectively reduce the escape of smoke around the blade and enhance the swirling effect of the smoke.
  • Figure 1 is a schematic diagram of the overall structure of an embodiment of a high-efficiency cyclone tray suitable for a ship's exhaust gas scrubber;
  • Figure 2 is a structural diagram of the swirl component in the embodiment
  • Fig. 3 is a schematic diagram of swirl blades of an embodiment of a high-efficiency swirl tray suitable for a ship exhaust gas scrubber;
  • Fig. 4 is a schematic diagram of the installation of a swirling tray of an embodiment of a high-efficiency swirling tray suitable for a marine exhaust gas scrubber.
  • the term “a” should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of an element may be one, and in another embodiment, the number of the element The number can be multiple, and the term “one” cannot be understood as a restriction on the number.
  • the embodiment of the present invention provides a high-efficiency cyclone tray suitable for a ship's exhaust gas scrubber, which is applied to a ship's exhaust gas scrubbing system. It reacts well with absorbent and improves desulfurization efficiency.
  • the high-efficiency swirling flow tray includes at least a connecting plate 1 and a plurality of swirling components 2 placed on the connecting plate 1.
  • a number of through holes are provided on the connecting plate 1, and the flue gas can pass through the through holes to communicate with the The lower liquid-holding layer reacts, which reduces the pressure drop of the entire tray as much as possible while ensuring the desulfurization efficiency.
  • the shape of the through hole can be a square hole or a round hole.
  • a mounting hole for the swirl component 2 is reserved on the connecting plate, and a plurality of swirl components 2 are symmetrically installed on the connecting plate 1.
  • the swirl assembly 2 includes an outer cylinder 8, an inner cylinder 5, and swirl vanes 6 arranged on the outer peripheral wall of the inner cylinder 5.
  • the bottom of the outer cylinder 8 is provided with a drainage inlet 4 for the absorbent to pass through.
  • Part of the flue gas passing through the swirling tower tray 9 upwards through the through holes on the connecting plate 1, and the other part of the flue gas passes through the swirling assembly 2 to form multiple cyclones in the same direction, and the flue gas swirling upward and spraying down
  • the absorbent fully contacts and reacts, and the purified flue gas passes through the demister 12 and is finally discharged to the atmosphere.
  • the swirl component 2 includes a peripheral swirl component placed on the inner peripheral wall of the swirl tray 9 and an internal swirl component close to the center of the swirl tray 9.
  • the peripheral cyclone assembly is provided with a drainage assembly for the absorbent to pass through.
  • the drainage assembly includes a drainage tube 3 and an annular tube 7 placed on the inner wall of the outer cylinder 8.
  • One end of the drainage tube 3 is set on the outside of the outer cylinder 8 and extends outward , The other end is in communication with the ring tube 7.
  • the spray density in the peripheral area is relatively small, so the possibility of flue gas escaping from the peripheral area is greater.
  • the annular tube 7 is provided with a plurality of circular holes on one side close to the swirl vane 6, and the plurality of circular holes are provided on the inner peripheral wall of the annular tube 7 and are spaced apart from each other along the circumferential direction of the annular tube 7.
  • the swirl vane 6 further includes a plurality of vanes spaced apart from each other in the circumferential direction of the inner cylinder 5, wherein the vane includes a vane body and a curved portion, wherein the inner end of the vane body is connected to the outer peripheral wall of the inner cylinder 5, and the curved portion The inner end of the blade is connected to the end of the blade body, and the middle section of the blade body is bent to form 5-15°.
  • the angle between the blade and the horizontal direction is about 45°
  • the height of the blade is about 60-100 mm
  • the angle formed by the bending of the middle section of the blade is about 10°.
  • the type of flap at the end of the blade can effectively reduce the escape of smoke around the blade and enhance the swirling effect of the smoke.
  • the number of blades is no less than 8.
  • a sealing plate is provided on the upper and/or bottom of the inner cylinder 5, and the sealing plate is used to prevent the flue gas from directly passing through the inner cylinder 5 to react with the absorbent.
  • the size of the outer cylinder 8 is about 400-800mm; on the premise of ensuring the installation and manufacture, in order to improve the swirl effect, the inner cylinder 5 needs to be as small as possible, generally about 50mm.
  • the swirl components 2 are arranged in a centrally symmetrical manner, and the number of swirl components 2 is not less than five.
  • the diameter of the circular holes opened in the ring tube 7 is 6-12 mm to ensure that the absorbent will not be blocked in the aperture, and the spacing of the circular holes is about 100 mm.
  • the circular holes are opened at an angle of 45° to prevent the absorbent from flowing and blocking the circular holes when there is no pressure.
  • the working principle and use process of the present invention the flue gas enters from the bottom of the scrubber 11 and passes through the swirl tray 9 inside the swirl tray.
  • the swirl tray 9 includes a connecting plate 1, a swirl component 2 and a drainage component.
  • the connecting plate 1 is provided with through holes, and the opening rate of the connecting plate 1 is determined according to the flue gas pressure and the pressure loss considered in the design; the connecting plate 1 is reserved for the installation holes of the swirl component 2 and the multiple swirl components 2 are symmetrical Installed on the connecting board 1.
  • Part of the flue gas passing through the swirling tray 9 passes upward through the through holes on the connecting plate 1, and the other part of the flue gas passes through the swirling assembly 2 to form multiple cyclones in the same direction.
  • the flue gas swirling upward and spraying down The absorbent fully contacts and reacts, and the purified flue gas passes through the demister 12 and is finally discharged to the atmosphere.
  • the absorbent is sprayed into the surrounding swirling components through the circular holes to increase the actual spraying absorbent density in the surrounding area of the swirling tray 9 and relying on the swirling effect of the swirling component 2 to break the absorbent into tiny droplets.
  • Fully react with flue gas. Thereby, the escaped flue gas in the surrounding area is effectively captured, and the desulfurization efficiency of the flue gas is improved.
  • the bottom of the outer cylinder 8 is also provided with a drainage inlet 4 for the absorbent to pass through.
  • the drainage inlet 4 is a regular semi-circular hole, so that the absorbent staying on the connecting plate 1 can pass through the small holes and enter the cyclone assembly 2 under the action of drainage. , And react with the smoke again.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
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Abstract

一种适用于船舶废气洗涤塔的高效旋流塔盘，包括连接板（1）以及置于连接板（1）上的多个旋流组件（2）；其中连接板（1）上开设若干通孔，旋流组件（2）包括外筒（8）、内筒（5）以及设在内筒（5）外周壁上的旋流叶片（6），外筒（8）底部设有供吸收剂通过的引流入口（4）。旋流组件（2）包括置于旋流塔盘内周壁上的周边旋流组件以及靠近旋流塔盘中心的内部旋流组件，周边旋流组件上设有供吸收剂通过的引流组件，引流组件包括引流管（3）以及置于外筒（8）内壁的环形管（7），引流管（3）的一端设于外筒（8）的外侧，向外伸出，另一端与环形管（7）联通。环形管（7）靠近旋流叶片（6）的一侧开设若干圆孔。

Description

一种适用于船舶废气洗涤塔的高效旋流塔盘 技术领域
本发明涉及脱硫环保设备领域，尤其是船舶废气处理洗涤塔设备。
背景技术
随着国家环保政策的日益严格，大部分的船舶用尾气都需进行脱硫处理。船舶脱硫技术主要通过洗涤塔吸收污染气体。其主要工作原理为：烟气进入洗涤塔内部与喷淋下来的吸收剂发生反应，其中含有的有害气体以及颗粒物被吸收剂吸收，净化达标后烟气经过除沫器排到大气。因此洗涤塔的净化效果直接关系到整套脱硫设备是否达标。
目前所应用的洗涤塔多为喷淋塔、填料塔、筛板塔等。其中大部分为填料塔，填料塔虽然结构简单，但是填料容易堵塞，清理检修时，填料的损耗较大，干烧工况下堵塞几率大大增加。筛板塔的压降较大且操作弹性较小，运行通常难以调节。喷淋塔主要净化作用太依赖于喷嘴的性能，要达到更好的雾化效果通常需要使用更小的喷嘴，增加喷嘴堵塞的风险。通常，洗涤塔的吸收效率主要与烟气和吸收剂的反应时间、烟气与吸收剂的接触面积、烟气的压力损失有关，而现有的洗涤塔的吸收效率仍待提高。
发明内容
针对本发明主要解决现有废气脱硫处理装置存在碱液与吸收剂混合效果不好的问题，提供一种适用于船舶废气洗涤塔的高效旋流塔盘，具有对船舶 用尾气脱硫处理的目的，本方案在提升烟气净化效率的同时，减少烟气的压力损失。
为了解决上述技术问题，本发明采用以下技术方案：
一种适用于船舶废气洗涤塔的高效旋流塔盘，包括连接板以及置于连接板上的多个旋流组件；其中连接板上开设若干通孔，旋流组件包括外筒、内筒以及设在内筒外周壁上的旋流叶片，外筒底部设有供吸收剂通过的引流入口。
可选地，连接板上设有与旋流组件相配的安装孔，多个旋流组件对称装设在连接板上，旋流组件包括置于旋流塔盘内周壁上的周边旋流组件以及靠近旋流塔盘中心的内部旋流组件。
可选地，周边旋流组件上设有供吸收剂通过的引流组件，引流组件包括引流管以及置于外筒内壁的环形管，引流管的一端设于外筒的外侧，向外伸出，另一端与环形管联通。
可选地，环形管靠近旋流叶片的一侧开设若干圆孔，多个圆孔设在环形管的内周壁上且沿环形管的周向方向彼此间隔开，环形管的下端设有排泄孔。
可选地，旋流叶片进一步包括沿内筒的周向方向彼此间隔的多个叶片，其中叶片包括叶片本体、弯曲部，其中，叶片本体的内端连接至内筒的外周壁，弯曲部的内端连接至叶片本体末端，叶片本体的中间段折弯角度为5-15°。
可选地，内筒的上部和/或底部设置封板，封板用于避免烟气直接通过内筒与吸收剂发生反应。
可选地，外筒的直径为400-800mm，内筒的直径为30-60mm。
可选地，环形管的圆孔直径为6-12mm，圆孔间距为80-120mm。
可选地，旋流组件的数量不少于5个。
根据本发明的另一方面，该高效旋流塔盘被应用于船舶废气洗涤系统中。
相较现有技术，本发明具有以下的特点和有益效果：
1、通过设置旋流塔盘，使烟气通过塔盘时形成多股旋向相同的旋风，增加烟气在洗涤塔内部的停留时间，使烟气与吸收剂的反应时间更长，提高烟气净化效果。
2、经旋流塔盘的旋风撕扯，喷淋的吸收剂被破碎成更小的雾滴，增加了烟气与吸收剂的接触面积，提高了废气的脱硫效率。
3、使烟气通过旋流塔盘压降更小。相同塔径的洗涤塔，烟气经过旋流塔的流速要高于填料塔，流速越高，烟气经过塔盘产生的旋流效果就越明显。在同样的烟气净化效果下，旋流塔的塔身高度可以适当降低，从而减少洗涤塔制造成本，更方便工程安装维护，尤其是船舶用洗涤塔，由于船舶结构空间受限，使用旋流塔盘结构，可以降低洗涤塔高度，减轻洗涤塔重量，减少洗涤塔重量对船体航行安全性的影响。
4、烟气在高低流速下，均能有效反应，相比填料塔，不会在塔盘上发生液泛，塔的设计安全系数小，而且吸收剂成分中，即使存在颗粒较大的固体悬浮物，也不会发生塔盘堵塞的危险。对于干烧时的工况，旋流塔盘也能很好运行，系统运行更加安全可靠。
5、旋流塔盘由各旋流组件和连接板组成，安装简单，维护方便，减少工程安装和维护的成本。
6、叶片中间段折弯形成一定角度，通过折弯角度，不仅可以调节烟气的 阻力损失，同时冲刷下来的吸收剂也会在塔盘上缓冲，增加吸收剂与烟气的反应时间。叶片末端折板的型式，可有效减少叶片四周烟气的逃逸，增强烟气的旋流效果。
附图说明
图1是一种适用于船舶废气洗涤塔的高效旋流塔盘的一个实施例的整体结构示意图；
图2是实施例中旋流组件的结构图；
图3是一种适用于船舶废气洗涤塔的高效旋流塔盘的一个实施例的旋流叶片的示意图；
图4是一种适用于船舶废气洗涤塔的高效旋流塔盘的一个实施例的旋流塔盘安装示意图。
图中标号说明：
1-连接板、2-旋流组件、3-引流管、4-引流入口、5-内筒、6-旋流叶片、7-环形管、8-外筒、9-旋流塔盘、10-喷淋层、11-洗涤塔、12-除沫器。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本发明保护的范围。
本领域技术人员应理解的是，在本发明的揭露中，术语“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是基于附图所示的方位或位置关系，其仅是为了便于描述本发明和简化描述，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，因此上述术语不能理解为对本发明的限制。
可以理解的是，术语“一”应理解为“至少一”或“一个或多个”，即在一个实施例中，一个元件的数量可以为一个，而在另外的实施例中，该元件的数量可以为多个，术语“一”不能理解为对数量的限制。
下面将参考附图描述根据本发明的示例性实施例。
如图1所示，为解决上述问题，本发明的实施例提供了一种适用于船舶废气洗涤塔的高效旋流塔盘，应用于船舶废气洗涤系统中，通过设置旋流组件2使烟气和吸收剂较好地反应，提高脱硫效率。
具体地，该高效旋流塔盘，至少包括连接板1以及置于连接板1上的多个旋流组件2，连接板1上开设若干通孔，烟气通过通孔可与塔盘上的较低持液层进行反应，在保证脱硫效率的同时尽可能降低了整个塔盘的压降，通孔形状可以为方孔或圆孔。连接板上预留旋流组件2的安装孔，多个旋流组件2对称装设在连接板1上。
其中，旋流组件2包括外筒8、内筒5以及设在内筒5外周壁上的旋流叶片6，外筒8底部设有供吸收剂通过的引流入口4。经过旋流塔盘9的烟气，一部分通过连接板1上的通孔向上，另一部分烟气通过旋流组件2，形成多股同方向的旋风，旋流而上的烟气与喷淋下来的吸收剂充分接触并发生反应，净化后的烟气经过除沫器12最终排至大气。
可选地，旋流组件2包括置于旋流塔盘9内周壁上的周边旋流组件以及靠近旋流塔盘9中心的内部旋流组件。周边旋流组件上设有供吸收剂通过的引流组件，引流组件包括引流管3以及置于外筒8内壁的环形管7，引流管3的一端设于外筒8的外侧，向外伸出，另一端与环形管7联通。具体地，相比于旋流塔盘9的中心区域，周边区域的喷淋密度相对来说较小，因此烟气从周边区域逃逸的可能性更大。通过设置引流管3，将一部分吸收剂引入周边旋流组件中。
更具体地，环形管7靠近旋流叶片6的一侧开设若干圆孔，多个圆孔设在环形管7的内周壁上且沿环形管7的周向方向彼此间隔开。通过将吸收剂引入周边旋流组件，增加旋流塔盘9周边区域的实际喷淋吸收剂密度，并依靠旋流组件2的旋流效果，吸收剂被破损成微小液滴，与烟气进行充分反应。从而有效捕集周边区域逃逸的烟气，提高烟气的脱硫效率。
另外，旋流叶片6进一步包括沿内筒5的周向方向彼此间隔的多个叶片，其中叶片包括叶片本体、弯曲部，其中，叶片本体的内端连接至内筒5的外周壁，弯曲部的内端连接至叶片本体末端，叶片本体的中间段折弯形成5-15°。旋流叶片6在安装时，叶片与水平方向夹角约为45°，叶片高度约为60-100mm，叶片中间段折弯形成的角度约为10度。通过折弯角度，不仅可以调节烟气的阻力损失，同时冲刷下来的吸收剂也会在塔盘上缓冲，增加吸收剂与烟气的反应时间。叶片末端折板的型式，可有效减少叶片四周烟气的逃逸，增强烟气的旋流效果，叶片的数量不少于8片。
另外，内筒5的上部和/或底部设置封板，封板用于避免烟气直接通过内筒5与吸收剂发生反应。
本实施例中，外筒8尺寸约为400-800mm；保证安装制作的前提下，为提升旋流效果，内筒5需尽可能小，一般约为50mm左右。根据塔径的不同，旋流组件2采用中心对称方式布置，旋流组件2数量不少于5个。
值得注意的是，环形管7上开设的圆孔直径为6-12mm，以保证吸收剂不会堵塞在孔径中，圆孔的间距约为100mm。另外，圆孔为45°斜下开孔，防止在无压的情况下吸收剂不易流动、堵塞圆孔。
本发明的工作原理及使用流程：烟气从洗涤塔11底部进入，经过旋流塔盘内部的旋流塔盘9，旋流塔盘9包括连接板1、旋流组件2以及引流组件。其中连接板1上开设通孔，根据烟气压力和设计考虑的压力损失，确定连接板1的开孔率；连接板1上预留旋流组件2的安装孔，多个旋流组件2对称装设在连接板1上。通过旋流塔盘9的烟气，一部分通过连接板1上的通孔向上，另一部分烟气通过旋流组件2，形成多股同方向的旋风，旋流而上的烟气与喷淋下来的吸收剂充分接触并发生反应，净化后的烟气经过除沫器12最终排至大气。同时将吸收剂通过圆孔喷洒入周边旋流组件，增加旋流塔盘9周边区域的实际喷淋吸收剂密度，并依靠旋流组件2的旋流效果，吸收剂被破损成微小液滴，与烟气进行充分反应。从而有效捕集周边区域逃逸的烟气，提高烟气的脱硫效率。外筒8底部还设有供吸收剂通过的引流入口4，引流入口4为规则半圆孔，使得滞留在连接板1上的吸收液，可以通过小孔，在引流作用下进入到旋流组件2，与烟气再次反应。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
需要说明的是：
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。此外，需要说明的是，本说明书中所描述的具体实施例，其零、部件的形状、所取名称等可以不同。凡依本发明专利构思的构造、特征及原理所做的等效或简单变化，均包括于本发明专利的保护范围内。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离本发明的结构或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。

Claims (10)

  1. 一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，至少包括：
    连接板(1)以及置于连接板(1)上的多个旋流组件(2)；
    其中连接板(1)上开设若干通孔，旋流组件(2)包括外筒(8)、内筒(5)以及设在内筒(5)外周壁上的旋流叶片(6)，外筒(8)底部设有供吸收剂通过的引流入口(4)。
  2. 根据权利要求1所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，连接板(1)上设有与旋流组件(2)相配的安装孔，多个旋流组件(2)对称装设在连接板(1)上，旋流组件(2)包括置于旋流塔盘(9)内周壁上的周边旋流组件以及靠近旋流塔盘(9)中心的内部旋流组件。
  3. 根据权利要求2所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，周边旋流组件上设有供吸收剂通过的引流组件，引流组件包括引流管(3)以及置于外筒(8)内壁的环形管(7)，引流管(3)的一端设于外筒(8)的外侧，向外伸出，另一端与环形管(7)联通。
  4. 根据权利要求3所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，环形管(7)靠近旋流叶片(6)的一侧开设若干圆孔，多个圆孔设在环形管(7)的内周壁上且沿环形管(7)的周向方向彼此间隔开，环形管(7)的下端设有排泄孔。
  5. 根据权利要求1所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，旋流叶片(6)进一步包括沿内筒(5)的周向方向彼此间隔的多个叶片，其中，叶片包括叶片本体、弯曲部，叶片本体的内端连 接至内筒(5)的外周壁，弯曲部的内端连接至叶片本体末端，叶片本体的中间段折弯形成的角度为5°-15°。
  6. 根据权利要求1所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，内筒(5)的上部和/或底部设置封板，封板用于避免烟气直接通过内筒(5)与吸收剂发生反应。
  7. 根据权利要求1所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，外筒(8)的直径为400mm-800mm，内筒(5)的直径为30mm-60mm。
  8. 根据权利要求1所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，环形管(7)的圆孔直径为6mm-12mm，圆孔间距为80mm-120mm。
  9. 根据权利要求1所述的一种适用于船舶废气洗涤塔的高效旋流塔盘，其特征在于，旋流组件(2)数量不少于5个。
  10. 一种船舶废气洗涤系统，其特征在于，包括如权利要求1-9任一所述的旋流塔盘(9)。
PCT/CN2020/071276 2019-12-26 2020-01-10 一种适用于船舶废气洗涤塔的高效旋流塔盘 WO2021128495A1 (zh)

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