CN105289179A - Low-resistance forced water cooling drip pipe type demister and demisting method - Google Patents
Low-resistance forced water cooling drip pipe type demister and demisting method Download PDFInfo
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- CN105289179A CN105289179A CN201510765874.0A CN201510765874A CN105289179A CN 105289179 A CN105289179 A CN 105289179A CN 201510765874 A CN201510765874 A CN 201510765874A CN 105289179 A CN105289179 A CN 105289179A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000001816 cooling Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003546 flue gas Substances 0.000 claims abstract description 47
- 238000011010 flushing procedure Methods 0.000 claims abstract description 26
- 239000000498 cooling water Substances 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims abstract description 5
- 230000005494 condensation Effects 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 claims 2
- 238000004581 coalescence Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000003643 water by type Substances 0.000 claims 1
- 239000010419 fine particle Substances 0.000 abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 abstract description 9
- 230000023556 desulfurization Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 4
- 238000011044 inertial separation Methods 0.000 abstract description 3
- 229910052602 gypsum Inorganic materials 0.000 abstract description 2
- 239000010440 gypsum Substances 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Separating Particles In Gases By Inertia (AREA)
Abstract
本发明公开了一种低阻强制水冷滴型管式除雾器及除雾方法，包括布置在脱硫塔顶部的滴型管束除雾系统和用于将冷却水通入管束内的强制冷却水循环系统。滴型管束除雾系统包括多层点阵错列布置在管箱内的截面呈水滴形的管排阵列和分层、阵列布置在管束间的多个向上和向下冲洗的喷嘴；强制冷却水循环系统包括储水箱、循环泵、进水箱、出水箱、风冷器，储水箱通过循环管道依次连接循环泵、进水箱、出水箱和风冷器。本除雾器将惯性分离和冷凝分离相结合，对微细颗粒脱除具有显著效果，具有除雾除尘效率高、冷却效率高、阻力小、节水等优点，能有效的减少烟气脱硫后产生的“石膏雨”。
The invention discloses a low-resistance forced water-cooled drop-type tube demister and a demisting method, including a drop-type tube bundle defogging system arranged on the top of a desulfurization tower and a forced cooling water circulation system for passing cooling water into the tube bundle . The drop-type tube bundle defogging system includes a multi-layer dot matrix staggered arrangement in the tube box, a drop-shaped tube row array and layered, multiple upward and downward flushing nozzles arranged in the array between the tube bundles; forced cooling water circulation The system includes a water storage tank, a circulation pump, a water inlet tank, a water outlet tank and an air cooler, and the water storage tank is connected to the circulation pump, the water inlet tank, the water outlet tank and the air cooler in sequence through a circulation pipeline. This demister combines inertial separation and condensation separation, which has a significant effect on the removal of fine particles. It has the advantages of high fog and dust removal efficiency, high cooling efficiency, small resistance, water saving, etc., and can effectively reduce the generation of flue gas desulfurization. "Gypsum Rain".
Description
技术领域technical field
本发明涉及湿法烟气脱硫装置中的烟气除雾，尤其涉及一种低阻强制水冷滴型管式除雾器及除雾方法。The invention relates to flue gas demisting in a wet flue gas desulfurization device, in particular to a low-resistance forced water-cooled drop-type tubular demister and a demisting method.
背景技术Background technique
随着雾霾天气的加剧，燃煤企业面临着极大的烟气处理压力和污染物治理压力，逐步加大了对烟气中胶体颗粒、细小雾滴、重金属蒸汽等复合污染物的排放控制。因此，配套建设除雾装置，完善除雾除尘技术对燃煤企业的可持续发展具有重要意义。With the intensification of smog, coal-fired enterprises are facing great pressure on flue gas treatment and pollutant control, and gradually increased the emission control of colloidal particles, fine mist droplets, heavy metal vapor and other complex pollutants in flue gas. . Therefore, it is of great significance for the sustainable development of coal-fired enterprises to build supporting demisting devices and improve demisting and dust removal technology.
除雾器通常利用惯性分离、离心分离、沉降分离、相变分离等原理去除烟气中携带的水分、硫酸、硫酸盐、SO2及其它微细颗粒，以减少对后续设备的堵塞和腐蚀，或防止烟气的直接排放所造成的“石膏雨”现象。工程上常见的除雾器有平板式除雾器、丝网除雾器、旋风除雾器、管式除雾器、电除雾器等，且大多采用单一类型的除雾器。除雾器中烟气流场分布的均匀性、除雾器的板片结构、布置形式、间距等因素都在一定程度上影响着除雾器的性能和除雾效率，然而单一类型的除雾器难以实现除雾效率高、冲洗效果好、压损小等综合效果，如何在小阻力下发展高效易冲洗的除雾器是当今除雾器发展的一个重要方向。Mist eliminators usually use the principles of inertial separation, centrifugal separation, sedimentation separation, phase change separation, etc. to remove moisture, sulfuric acid, sulfate, SO 2 and other fine particles carried in the flue gas, so as to reduce the blockage and corrosion of subsequent equipment, or Prevent the "gypsum rain" phenomenon caused by the direct emission of flue gas. Common demisters in engineering include flat plate demisters, wire mesh demisters, cyclone demisters, tubular demisters, electric demisters, etc., and most of them use a single type of demister. Factors such as the uniformity of the smoke flow field distribution in the demister, the plate structure, layout, and spacing of the demister all affect the performance and demisting efficiency of the demister to a certain extent. However, a single type of demister It is difficult to achieve comprehensive effects such as high demister efficiency, good flushing effect, and small pressure loss. How to develop an efficient and easy-to-wash demister under small resistance is an important direction for the development of demisters today.
发明内容Contents of the invention
本发明的目的在于解决传统除雾器除雾除尘效率低、烟气流动的阻力较大以及冲洗不充分的问题，提供一种低阻强制水冷滴型管式除雾器及除雾方法。The purpose of the present invention is to solve the problems of low efficiency of fog and dust removal, high resistance to flue gas flow and insufficient flushing of traditional mist eliminators, and to provide a low-resistance forced water-cooled drop-type tubular mist eliminator and a demisting method.
本发明通过下述技术方案实现：The present invention realizes through following technical scheme:
一种低阻强制水冷滴型管式除雾器，包括布置在脱硫塔顶部的水冷滴型管束除雾系统、用于将冷却水通入水冷滴型管束除雾系统的强制冷却水循环系统；A low-resistance forced water-cooled drop-type tube-type demister, including a water-cooled drop-type tube bundle demister system arranged on the top of the desulfurization tower, and a forced cooling water circulation system for passing cooling water into the water-cooled drop-type tube bundle demist system;
所述水冷滴型管束除雾系统由多层点阵错列布置在管箱2内的截面呈水滴形的管束1构成的管排阵列；The water-cooled drop-type tube bundle defogging system is a tube row array composed of tube bundles 1 with drop-shaped cross-sections arranged in a multi-layer dot matrix staggered in the tube box 2;
所述强制冷却水循环系统包括储水箱5、循环泵6、进水箱7、出水箱8、风冷器9；所述储水箱5依次通过循环管道10连接风冷器9、出水箱8、循环泵6和进水箱7；所述管排阵列的进水端连通进水箱7，出水端连通出水箱8。The forced cooling water circulation system includes a water storage tank 5, a circulation pump 6, a water inlet tank 7, a water outlet tank 8, and an air cooler 9; The pump 6 and the water inlet tank 7; the water inlet end of the pipe row array is connected to the water inlet tank 7, and the water outlet end is connected to the water outlet tank 8.
所述管束1横截面的上部为半圆形，下部为半椭圆形，半椭圆的短半轴A的长度为半圆形的半径R，长半轴B是短半轴A的2～3.5倍；烟气流从管箱2的底部进入，经过管排阵列后由管箱2的顶部排出。The upper part of the cross-section of the tube bundle 1 is semicircular, the lower part is semielliptical, the length of the semi-minor axis A of the semi-ellipse is the radius R of the semicircle, and the major semi-axis B is 2 to 3.5 times the minor semi-axis A ; The flue gas flow enters from the bottom of the tube box 2, and is discharged from the top of the tube box 2 after passing through the tube row array.
所述水冷滴型管束除雾系统包括一个用于对管排阵列进行冲洗的分级定向冲洗水系统。The water-cooled drop-type tube bundle defogging system includes a hierarchical and directional flushing water system for flushing the tube array.
所述分级定向冲洗水系统由多个以分层、并阵列排布在管排阵列中的多个向上和向下喷射水流的喷嘴3构成。The graded and directional flushing water system is composed of a plurality of nozzles 3 that spray water flow upward and downward in layers and arranged in parallel arrays in the tube row array.
所述储水箱5的顶部设有补水阀，下部设有排污阀。The top of the water storage tank 5 is provided with a replenishment valve, and the bottom is provided with a drain valve.
所述进水箱7中设有与分配管，通过分配管连通管排阵列的进水端。The water inlet tank 7 is provided with a distribution pipe through which the water inlet end of the pipe row array is connected.
上述低阻强制水冷滴型管式除雾器的除雾方法如下：The demisting method of the above-mentioned low-resistance forced water-cooled drop-type tubular demister is as follows:
烟气从管箱2的底部进入，在管排阵列间进行绕流，烟气偏转上升，产生涡流及流速变化，流动轨迹不断偏折，湿烟气所携带的一部分微细颗粒在惯性力的作用下不断撞击管束1的外壁面，同烟气分离；The flue gas enters from the bottom of the pipe box 2 and flows around the array of pipe rows. The flue gas deflects and rises, resulting in eddy currents and changes in flow velocity. The flow trajectory is constantly deflected. Continuously hit the outer wall of the tube bundle 1 to separate from the flue gas;
与此同时，循环泵6将储水箱5中的冷却水压入进水箱7中，冷却水均匀流经管束1后流至出水箱8，最后经过风冷器9冷却降温重新回到储水箱5中；在冷却水的作用下，携带微细颗粒的湿烟气在管束1的外壁面产生冷凝，使烟气所携带的部分微细颗粒随蒸汽一起凝并，同烟气分离；析出饱和水。At the same time, the circulating pump 6 presses the cooling water in the water storage tank 5 into the water inlet tank 7, and the cooling water evenly flows through the tube bundle 1 to the water outlet tank 8, and finally returns to the water storage tank after being cooled by the air cooler 9 Step 5: Under the action of cooling water, the wet flue gas carrying fine particles condenses on the outer wall of the tube bundle 1, so that part of the fine particles carried by the flue gas condenses together with the steam and separates from the flue gas; saturated water is precipitated.
分级定向冲洗水系统的喷嘴3定时、间隔地冲洗滴型管束1，冲洗水流及时带走残留和沉积在滴型管束除雾系统中的微粒，流至脱硫塔底部浆池。The nozzles 3 of the graded and directional flushing water system flush the drop-shaped tube bundle 1 regularly and at intervals, and the flushing water flow promptly removes the residual and deposited particles in the drop-shaped tube bundle defogging system, and flows to the slurry pool at the bottom of the desulfurization tower.
本发明相对于现有技术，具有如下的优点及效果：Compared with the prior art, the present invention has the following advantages and effects:
(1)高效冷凝换热：本发明采用在管束内引入低温的冷却循环水的设计，单位流通面积内烟气与管束的接触面积更大。循环水在风冷器中散热后在较低的温度下再次流入管束内，传热温差大，换热效率高，实现了饱和湿烟气中微细颗粒物的高效凝并；(1) High-efficiency condensation heat exchange: The present invention adopts the design of introducing low-temperature cooling circulating water into the tube bundle, so that the contact area between the flue gas and the tube bundle within a unit circulation area is larger. After the circulating water dissipates heat in the air cooler, it flows into the tube bundle again at a lower temperature. The heat transfer temperature difference is large and the heat exchange efficiency is high, which realizes the efficient condensation of fine particles in the saturated wet flue gas;
(2)高效除尘除雾：点阵错列布置的管束对烟气产生扰流作用。烟气在管束间交替收缩和扩张的曲折通道内流动时形成涡流，烟气偏转上升，细小微粒在惯性力的作用下不断撞击管束的外壁面，有效增加了撞击率，除雾除尘效率高；(2) Efficient dedusting and demisting: The tube bundles arranged in a staggered array have a disturbing effect on the flue gas. When the flue gas flows in the tortuous channel that alternately shrinks and expands between the tube bundles, a vortex is formed, the flue gas deflects upward, and the fine particles continuously hit the outer wall of the tube bundle under the action of inertial force, effectively increasing the impact rate, and the efficiency of fog and dust removal is high;
(3)烟气流动均匀、阻力小：管束具有均布烟气的作用，使得烟气进入管排阵列时流场分布更加均匀，有效减少了烟气的局部二次携带和局部分离作用差的现象。水滴形的管束还能减少迎风面的阻力，降低烟气绕过管束时的分离损失和阻力损失；(3) Uniform flue gas flow and low resistance: the tube bundle has the effect of uniformly distributing the flue gas, which makes the flow field distribution more uniform when the flue gas enters the tube array, effectively reducing the local secondary carryover of the flue gas and the poor local separation effect Phenomenon. The drop-shaped tube bundle can also reduce the resistance on the windward side, and reduce the separation loss and resistance loss when the flue gas bypasses the tube bundle;
(4)不易堵塞结垢：水滴形的管束具有更加平缓的弧度，沉积在管束顶部和管束表面的微粒及浆液能顺着弧形表面向下滑落，自洁功能良好。本发明还设置有多个定向布置的全方位冲洗喷嘴，上层管道的冲洗水能继续冲洗下层管道，管束间的多股冲洗水不断汇聚，有效的解决了传统管式除雾器易堵塞、存在冲洗死区的问题。(4) Not easy to block and scale: the drop-shaped tube bundle has a gentler arc, and the particles and slurry deposited on the top and surface of the tube bundle can slide down along the curved surface, and the self-cleaning function is good. The present invention is also provided with a plurality of directional arrangement of all-round flushing nozzles, the flushing water of the upper pipeline can continue to flush the lower pipeline, and the multiple streams of flushing water between the tube bundles are continuously converged, which effectively solves the problem of easy clogging of traditional tubular demisters and the existence of The problem of flushing the dead zone.
(5)节水效果好：该系统通过冷凝，将传统脱硫工艺中大量排入大气的水蒸气回收，降低了脱硫系统的耗水量。(5) Good water-saving effect: The system recovers a large amount of water vapor discharged into the atmosphere in the traditional desulfurization process through condensation, reducing the water consumption of the desulfurization system.
附图说明Description of drawings
图1为本发明低阻强制水冷滴型管式除雾器的侧视示意图。Fig. 1 is a schematic side view of the low-resistance forced water-cooled drop-type tubular demister of the present invention.
图2为图1中水滴形的管束横截面示意图。Fig. 2 is a schematic cross-sectional view of the drop-shaped tube bundle in Fig. 1 .
图3为本发明低阻强制水冷滴型管式除雾器的主视示意图。Fig. 3 is a schematic front view of the low-resistance forced water-cooled drop-type tubular demister of the present invention.
具体实施方式detailed description
下面结合具体实施例对本发明作进一步具体详细描述。The present invention will be described in further detail below in conjunction with specific embodiments.
实施例Example
如图1至3所示。本发明公开了一种低阻强制水冷滴型管式除雾器，包括布置在脱硫塔顶部的水冷滴型管束除雾系统、用于将冷却水通入水冷滴型管束除雾系统的强制冷却水循环系统；As shown in Figures 1 to 3. The invention discloses a low-resistance forced water-cooled drop-type tube-type demister, which includes a water-cooled drop-type tube bundle demist system arranged on the top of a desulfurization tower, and a forced cooling system for passing cooling water into the water-cooled drop-type tube bundle demist system. water circulatory system;
所述水冷滴型管束除雾系统由多层点阵错列布置在管箱2内的截面呈水滴形的管束1构成的管排阵列；The water-cooled drop-type tube bundle defogging system is a tube row array composed of tube bundles 1 with drop-shaped cross-sections arranged in a multi-layer dot matrix staggered in the tube box 2;
所述强制冷却水循环系统包括储水箱5、循环泵6、进水箱7、出水箱8、风冷器9；所述储水箱5依次通过循环管道10连接风冷器9、出水箱8、循环泵6和进水箱7；所述管排阵列的进水端连通进水箱7，出水端连通出水箱8。The forced cooling water circulation system includes a water storage tank 5, a circulation pump 6, a water inlet tank 7, a water outlet tank 8, and an air cooler 9; The pump 6 and the water inlet tank 7; the water inlet end of the pipe row array is connected to the water inlet tank 7, and the water outlet end is connected to the water outlet tank 8.
所述管束1横截面的上部为半圆形，下部为半椭圆形，半椭圆的短半轴A的长度为半圆形的半径R，长半轴B是短半轴A的2～3.5倍；烟气流从管箱2的底部进入，经过管排阵列后由管箱2的顶部排出。The upper part of the cross-section of the tube bundle 1 is semicircular, the lower part is semielliptical, the length of the semi-minor axis A of the semi-ellipse is the radius R of the semicircle, and the major semi-axis B is 2 to 3.5 times the minor semi-axis A ; The flue gas flow enters from the bottom of the tube box 2, and is discharged from the top of the tube box 2 after passing through the tube row array.
所述水冷滴型管束除雾系统包括一个用于对管排阵列进行冲洗的分级定向冲洗水系统。The water-cooled drop-type tube bundle defogging system includes a hierarchical and directional flushing water system for flushing the tube array.
所述分级定向冲洗水系统由多个以分层、并阵列排布在管排阵列中的多个向上和向下喷射水流的喷嘴3构成。The graded and directional flushing water system is composed of a plurality of nozzles 3 that spray water flow upward and downward in layers and arranged in parallel arrays in the tube row array.
所述储水箱5的顶部设有补水阀，下部设有排污阀。The top of the water storage tank 5 is provided with a replenishment valve, and the bottom is provided with a drain valve.
所述进水箱7中设有与分配管，通过分配管连通管排阵列的进水端。The water inlet tank 7 is provided with a distribution pipe through which the water inlet end of the pipe row array is connected.
本发明将惯性分离和相变分离原理相结合，让冷却水在错列布置的管束1内循环流动，以实现高效除雾。温度较高的烟气与管束1内流动的冷却水存在着一定的温差，烟气因冷却降温，携带能力降低。部分蒸汽释放潜热，并与烟气中携带的微细颗粒在管束1的外壁面发生凝并；烟气以一定流速经过各管束1间狭窄、曲折的通道时产生紊流，烟气的流速和流向发生改变，流动轨迹不断偏折。雾滴及微细颗粒由于密度大，对烟气的跟随性较差，在惯性力的作用下撞击管束1的外壁面，有效的实现了气液分离。The present invention combines the principles of inertial separation and phase change separation, allowing cooling water to circulate in the staggered tube bundles 1 to achieve efficient demisting. There is a certain temperature difference between the flue gas with a higher temperature and the cooling water flowing in the tube bundle 1, and the flue gas is cooled by cooling, and the carrying capacity is reduced. Part of the steam releases latent heat and condenses with the fine particles carried in the flue gas on the outer wall of the tube bundle 1; when the flue gas passes through the narrow and tortuous passages between the tube bundles 1 at a certain flow rate, turbulent flow occurs, the flow velocity and direction of the flue gas Changes occur, and the flow trajectory is constantly deflected. Due to their high density, the mist and fine particles have poor followability to the flue gas, and hit the outer wall of the tube bundle 1 under the action of inertial force, effectively realizing gas-liquid separation.
强制冷却水循环系统，通过循环泵6将储水箱5中的冷却水不断地吸入和压出。冷却水流经各管束1内，与管束1外流动的高温烟气进行冷凝换热，换热后的循环水流出管束1进入风冷器9中，经冷却后再次参与闭式循环换热。该系统不仅提高了冷却效率，也大大节省了工艺用水。The forced cooling water circulation system continuously sucks and presses out the cooling water in the water storage tank 5 through the circulating pump 6 . The cooling water flows through the tube bundles 1, and condenses and exchanges heat with the high-temperature flue gas flowing outside the tube bundles 1. After heat exchange, the circulating water flows out of the tube bundles 1 and enters the air cooler 9, and participates in the closed cycle heat exchange again after being cooled. This system not only improves cooling efficiency, but also saves process water significantly.
本发明分级定向冲洗水系统，通过多个向上、向下的喷嘴3全方位冲洗管束1。垂直向下喷射的冲洗水冲击至管束1顶部时左右分流并顺着管壁的光滑弧形表面向下冲洗，垂直向上喷射的冲洗水冲洗管束1弧形表面后在重力作用下继续向下冲洗。上层管道的冲洗水再次冲洗下层管道。分级定向冲洗喷嘴能有效去除残留在管束1上的尘垢和浆液，消除冲洗死角，提高了清洁度。The hierarchical and directional flushing water system of the present invention flushes the tube bundle 1 in all directions through a plurality of upward and downward nozzles 3 . When the flushing water sprayed vertically downward hits the top of the tube bundle 1, it splits left and right and flushes down along the smooth arc surface of the tube wall; the flush water sprayed vertically upward flushes the arc surface of the tube bundle 1 and then continues to flush downward under the action of gravity . The flushing water from the upper pipeline flushes the lower pipeline again. The graded and directional flushing nozzles can effectively remove the dirt and slurry remaining on the tube bundle 1, eliminate the dead angle of flushing, and improve the cleanliness.
采用本发明低阻强制水冷滴型管式除雾器除雾的方法，可通过如下步骤实现：The method for defogging the low-resistance forced water-cooled drop-type tubular demister of the present invention can be realized through the following steps:
烟气从管箱2的底部进入，在管排阵列间进行绕流，烟气偏转上升，产生涡流及流速变化，流动轨迹不断偏折，湿烟气所携带的一部分微细颗粒在惯性力的作用下不断撞击管束1的外壁面，同烟气分离；The flue gas enters from the bottom of the pipe box 2 and flows around the array of pipe rows. The flue gas deflects and rises, resulting in eddy currents and changes in flow velocity. The flow trajectory is constantly deflected. Continuously hit the outer wall of the tube bundle 1 to separate from the flue gas;
与此同时，循环泵6将储水箱5中的冷却水压入进水箱7中，冷却水均匀流经管束1后流至出水箱8，最后经过风冷器9冷却降温重新回到储水箱5中；在冷却水的作用下，携带微细颗粒的湿烟气在管束1的外壁面产生冷凝，使烟气所携带的部分微细颗粒随蒸汽一起凝并，同烟气分离；析出饱和水。At the same time, the circulating pump 6 presses the cooling water in the water storage tank 5 into the water inlet tank 7, and the cooling water evenly flows through the tube bundle 1 to the water outlet tank 8, and finally returns to the water storage tank after being cooled by the air cooler 9 Step 5: Under the action of cooling water, the wet flue gas carrying fine particles condenses on the outer wall of the tube bundle 1, so that part of the fine particles carried by the flue gas condenses together with the steam and separates from the flue gas; saturated water is precipitated.
本发明包括一个管排阵列冲洗步骤：分级定向冲洗水系统的喷嘴3定时、间隔地冲洗管束1，冲洗水流及时带走残留和沉积在滴型管束除雾系统中的微粒，流至脱硫塔底部浆池。The invention includes a tube array flushing step: the nozzles 3 of the graded and directional flushing water system flush the tube bundle 1 regularly and at intervals, and the flushing water flow promptly takes away the particles remaining and deposited in the drop-shaped tube bundle defogging system, and flows to the bottom of the desulfurization tower pulp pool.
如上所述，便可较好地实现本发明。As described above, the present invention can be preferably carried out.
本发明的实施方式并不受上述实施例的限制，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The implementation of the present invention is not limited by the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods, and are all included in within the protection scope of the present invention.
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