TWI389735B - Flue gas desulfurization device - Google Patents
Flue gas desulfurization device Download PDFInfo
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- TWI389735B TWI389735B TW097105920A TW97105920A TWI389735B TW I389735 B TWI389735 B TW I389735B TW 097105920 A TW097105920 A TW 097105920A TW 97105920 A TW97105920 A TW 97105920A TW I389735 B TWI389735 B TW I389735B
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- 238000006477 desulfuration reaction Methods 0.000 title claims description 97
- 230000023556 desulfurization Effects 0.000 title claims description 97
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 14
- 239000003546 flue gas Substances 0.000 title claims description 14
- 239000013535 sea water Substances 0.000 claims description 88
- 239000007789 gas Substances 0.000 claims description 51
- 238000005192 partition Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 230000003009 desulfurizing effect Effects 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- 239000001307 helium Substances 0.000 description 9
- 229910052734 helium Inorganic materials 0.000 description 9
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 9
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 7
- 229910052815 sulfur oxide Inorganic materials 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010742 number 1 fuel oil Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Classifications
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Description
本發明是燃燒煤炭、燃燒原油、以及燃燒重油等之發電廠所適用的排煙脫硫裝置，尤其是關於使用海水法進行脫硫的排煙脫硫裝置。The present invention relates to a flue gas desulfurization device suitable for power plants for burning coal, burning crude oil, and burning heavy oil, and more particularly to a flue gas desulfurization device for desulfurization using a seawater method.
以往，對於以煤炭或原油等作為燃料的發電廠，從鍋爐所排出的燃燒排放氣體(以下，稱之為「鍋爐排氣」)，是先將鍋爐排氣中所含有的二氧化硫(SO2 )等之硫氧化物(SOX )除去後，再釋放於大氣。作為實施如此脫硫處理之排煙脫硫裝置的脫硫方式，周知有石灰石石膏法、噴霧乾燥機法、以及海水法。In the power plant that uses coal or crude oil as a fuel, the combustion exhaust gas (hereinafter referred to as "boiler exhaust gas") discharged from the boiler is the sulfur dioxide (SO 2 ) contained in the boiler exhaust gas. After the sulfur oxides (SO X ) are removed, they are released into the atmosphere. As a desulfurization method for performing the desulfurization treatment of the flue gas desulfurization apparatus, a limestone gypsum method, a spray dryer method, and a seawater method are known.
其中，採用海水法的排煙脫硫裝置(以下，稱之為「海水脫硫裝置」)，是使用海水作為吸收劑的脫硫方式。此方式，例如，是藉由將海水及鍋爐排氣供給到：將大致如圓筒般之筒狀予以直立設置之脫硫塔(吸收塔)的內部，以海水作為吸收液形成濕式基材的氣液接觸來去除硫氧化物。Among them, a flue gas desulfurization device using seawater method (hereinafter referred to as "seawater desulfurization device") is a desulfurization method using seawater as an absorbent. In this way, for example, the seawater and the boiler exhaust gas are supplied to the inside of a desulfurization tower (absorption tower) which is disposed upright in a cylindrical shape, and the seawater is used as an absorption liquid to form a wet substrate. Gas-liquid contact to remove sulfur oxides.
海水脫硫裝置1，例如如第6圖所示，其一方之海水是從脫硫塔2的上部所供給而自然落下，其與從脫硫塔2的下部所供給而上昇之鍋爐排氣之間形成氣液接觸。海水與鍋爐排氣的氣液接觸，是利用在脫硫塔2內的上下方向以預定間隔配置複數段的多孔板架3作為濕式基材，使海 水及鍋爐排氣通過貫穿設置在多孔板架3的多數個孔4而達成。又，圖中的元件符號5是海水供給管，6是讓脫硫後的海水流出的海水排出管，7是鍋爐排氣供給口，8是讓脫硫後的鍋爐排氣流出的鍋爐排氣排出口(例如，請參照專利文獻1、2)。In the seawater desulfurization apparatus 1, for example, as shown in Fig. 6, one of the seawater is supplied from the upper portion of the desulfurization tower 2 and naturally falls, and is supplied to the boiler exhaust gas which is supplied from the lower portion of the desulfurization tower 2 and rises. A gas-liquid contact is formed between them. The gas-liquid contact between the seawater and the boiler exhaust gas is to use a plurality of porous plate frames 3 arranged at predetermined intervals in the vertical direction in the desulfurization tower 2 as a wet substrate to make the sea The water and boiler exhaust are achieved by passing through a plurality of holes 4 provided in the perforated plate holder 3. Further, the reference numeral 5 in the figure is a seawater supply pipe, 6 is a seawater discharge pipe through which desulfurized seawater flows out, 7 is a boiler exhaust gas supply port, and 8 is a boiler exhaust gas for allowing desulfurized boiler exhaust gas to flow out. The discharge port (for example, refer to Patent Documents 1 and 2).
[專利文獻1]日本特開平11-290643號公報 [專利文獻2]日本特開2001-129352號公報[Patent Document 1] Japanese Patent Laid-Open No. Hei 11-290643 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2001-129352
然而，在上述之海水脫硫裝置1的脫硫塔2內，由於是以從下方上昇的鍋爐排氣與從上方流下的海水氣液接觸而脫硫之方式所構成，所以當鍋爐排氣與海水之流動的分布在脫硫塔2的水平斷面內形成不均一時，在脫硫性能的確保上就會帶來障礙。However, in the desulfurization tower 2 of the seawater desulfurization apparatus 1 described above, since the boiler exhaust gas rising from below is desulfurized by contact with the seawater gas and liquid flowing down from above, the boiler exhaust gas and the boiler are exhausted. When the distribution of the flow of seawater is uneven in the horizontal section of the desulfurization tower 2, there is a problem in securing the desulfurization performance.
具體性說明如下，當在脫硫塔2的水平斷面內，鍋爐排氣的流動與海水的流動產生分布不均一的偏流時，例如如第6圖所示，上昇流動的鍋爐排氣(以實線箭頭顯示)與朝下自然落下流動的海水(於圖中以虛線箭頭顯示)造成分離，產生相互通過不同區域的孔4而流動之所謂鍋爐排氣的竄氣現象。由於如此，鍋爐排氣與海水的接觸變得不夠充分，造成有助於鍋爐排氣與海水相互接觸而脫硫的流量比率降低。The specific description is as follows. When the flow of the boiler exhaust gas and the flow of the seawater generate a non-uniform drift in the horizontal section of the desulfurization tower 2, for example, as shown in Fig. 6, the upward flow of the boiler exhaust gas The solid arrow shows that the seawater flowing down naturally (shown by a dashed arrow in the figure) causes separation, resulting in a helium phenomenon of so-called boiler exhaust flowing through the holes 4 in different regions. As a result, the contact between the boiler exhaust gas and the seawater becomes insufficient, and the flow ratio that contributes to the desulfurization of the boiler exhaust gas and the seawater is reduced.
上述偏流及竄氣現象，是成為鍋爐排氣中的硫氧化物 不能充分被脫硫而直接被排氣之脫硫性能降低的原因。如此之偏流及竄氣現象，在所處理之鍋爐排氣的量增大、或是在將鍋爐排氣的上昇速度設定在比較低速的所要範圍等前提時，脫硫塔2的斷面積愈大則愈顯著。The above-mentioned bias current and helium phenomenon are the sulfur oxides in the exhaust gas of the boiler. The reason why the desulfurization performance of the exhaust gas which is not directly desulfurized and is directly exhausted is lowered. With such a bias and helium phenomenon, the larger the cross-sectional area of the desulfurization tower 2, the greater the amount of exhaust gas to be treated, or the setting of the rising speed of the boiler exhaust gas to a relatively low speed. The more obvious it is.
產生上述偏流的原因，是被認為諸如：鍋爐排氣的流入角度、脫硫塔2的尺寸(寬度、深度、高度、或是塔徑、高度)、多孔架板3的設置位置及片數等因素。但是，若要找出可以防止偏流產生的最佳尺寸形狀，則必須藉由模型試驗或模擬試驗來解析上述原因，會成為需要費時與成本等之極困難的作業。The reason for the above-mentioned bias flow is considered to be, for example, the inflow angle of the boiler exhaust gas, the size (width, depth, height, or tower diameter, height) of the desulfurization tower 2, the installation position and the number of sheets of the porous frame plate 3, and the like. factor. However, if an optimum size shape capable of preventing the occurrence of a bias current is found, it is necessary to analyze the above causes by a model test or a simulation test, which becomes an extremely difficult task requiring time consuming, cost, and the like.
如此地，針對於採用海水法之排煙脫硫裝置(海水脫硫裝置)，由於因脫硫塔的大型化等容易產生偏流及鍋爐排氣的竄氣現象而使得脫硫性能降低，因此期望開發出以容易且簡單的構造就可以確實地防止上述缺失而可以得到良好的脫硫性能之排煙脫硫裝置。In this way, in the case of the flue gas desulfurization device (seawater desulfurization device) using the seawater method, the desulfurization performance is lowered due to the occurrence of a bias current and a helium gas phenomenon in the exhaust gas of the boiler due to an increase in the size of the desulfurization tower, and thus it is desired A flue gas desulfurization apparatus capable of reliably preventing the above-mentioned deficiency and obtaining good desulfurization performance with an easy and simple structure has been developed.
本發明，是有鑑於上述情事而發明，其目的在於提供一種以容易且簡單的構造就可以確實地防止偏流及鍋爐排氣的竄氣現象而能夠得到良好的脫硫性能之採用海水法的排煙脫硫裝置。The present invention has been made in view of the above circumstances, and an object of the invention is to provide a row using seawater method which can reliably prevent a drift phenomenon and a helium phenomenon of a boiler exhaust gas with an easy and simple structure, and can obtain a good desulfurization performance. Smoke desulfurization device.
本發明為了解決上述問題而採用了以下的手段。In order to solve the above problems, the present invention employs the following means.
本發明之排煙脫硫裝置，是使從脫硫塔之上部流下的海水與由脫硫塔之下方上昇的燃燒排放氣體進行氣液接觸 並脫硫之海水法的排煙脫硫裝置，其特徵為：配設有將上述脫硫塔內的水平斷面積區隔成預定值以下之鉛直方向的區隔板。The flue gas desulfurization device of the present invention is for making gas-liquid contact between the seawater flowing from the upper part of the desulfurization tower and the combustion exhaust gas rising from the lower side of the desulfurization tower. The flue gas desulfurization apparatus of the desulfurized seawater method is characterized in that a partition plate that partitions the horizontal cross-sectional area in the desulfurization tower into a vertical direction equal to or less than a predetermined value is disposed.
依據如此之排煙脫硫裝置，由於配設有以使得脫硫塔內的水平斷面積區隔成預定值以下之鉛直方向的區隔板，使海水的橫向流動受到區隔板所限制而難以產生偏流。According to such a flue gas desulfurization device, since the partition plate is provided so that the horizontal cross-sectional area in the desulfurization tower is divided into a vertical direction below a predetermined value, the lateral flow of the seawater is restricted by the partition plate and is difficult. A bias current is generated.
在上述的發明中，其中上述氣液接觸是以由多孔架板所成的濕式基材來進行，上述區隔板，是被設置為：從上述濕式基材朝向上方，到至少比上述濕式基材上之海水滯留高度還高的位置為理想，藉此，可以將壓力損失抑制於最小限度並可以防止偏流。In the above invention, the gas-liquid contact is performed by a wet substrate formed of a porous frame, and the partition plate is disposed to face upward from the wet substrate to at least It is desirable that the position of the seawater on the wet substrate is still high, whereby the pressure loss can be minimized and the drift can be prevented.
又，在上述之發明中，上述氣液接觸為噴霧式或是充填方式之中之任一種皆可。Further, in the above invention, the gas-liquid contact may be either a spray type or a filling method.
依據上述之本發明，由於是以將脫硫塔內的水平斷面積區隔成預定值以下之方式配置鉛直方向的區隔板，來限制海水的橫向流動，使朝上上昇的燃燒排放氣體的流動與朝下流下之海水流動的分布難以在水平斷面內產生成為不均一的偏流。因此，對於採用海水法的排煙脫硫裝置，由於以容易且簡單的構造就可以確實地抑制或防止因脫硫塔的大型化等容易產生之偏流及鍋爐排氣的竄氣現象，而能夠得到良好的脫硫性能。According to the invention as described above, since the vertical partition is disposed so as to divide the horizontal sectional area in the desulfurization tower to a predetermined value or less, the lateral flow of the seawater is restricted, and the combustion exhaust gas rising upward is restricted. The distribution of the flow of water flowing down and down is difficult to produce a non-uniform bias flow in the horizontal section. Therefore, in the flue gas desulfurization apparatus using the seawater method, it is possible to reliably suppress or prevent the occurrence of a bias current which is likely to occur due to an increase in size of the desulfurization tower or a helium phenomenon of the boiler exhaust gas, with an easy and simple structure. Good desulfurization performance is obtained.
以下，依據圖面說明本發明之排煙脫硫裝置的一實施形態。Hereinafter, an embodiment of the flue gas desulfurization apparatus of the present invention will be described based on the drawings.
第1圖所示之海水脫硫裝置1A的脫硫塔2，是藉由海水法將例如從以煤炭或原油等為燃料之發電廠的鍋爐所排出的燃燒排放氣體(以下，簡稱為「鍋爐排氣」)中所含的二氧化硫(SO2 )等之硫氧化物(SOX )，在排放到大氣之前予以去除的裝置。使用被稱為海水法之脫硫方式的海水脫硫裝置1A，是使用海水作為吸收劑。The desulfurization tower 2 of the seawater desulfurization apparatus 1A shown in Fig. 1 is a combustion exhaust gas which is discharged from a boiler of a power plant using coal or crude oil as a fuel by a seawater method (hereinafter, simply referred to as "a boiler" sulfur dioxide (SO 2)) in the exhaust gas, "and the like contained in the sulfur oxide (SO X), means to be removed before discharge to the atmosphere. A seawater desulfurization apparatus 1A using a desulfurization method called a seawater method uses seawater as an absorbent.
圖示之海水脫硫裝置1A，是藉由將海水及鍋爐排氣供給到：將大致圓筒狀予以直立設置之脫硫塔2的內部，以海水作為吸收液形成濕式基材的氣液接觸來去除硫氧化物。供給至脫硫塔2的海水，是藉由從脫硫塔內的上部噴出而在內部自然落下，相對於此，供給至脫硫塔2的鍋爐排氣，是從脫硫塔2的下部被導入於脫硫塔內並上昇。The illustrated seawater desulfurization apparatus 1A supplies the seawater and the boiler exhaust gas to the inside of the desulfurization tower 2 in which the substantially cylindrical shape is erected, and the seawater is used as the absorption liquid to form the wet liquid substrate. Contact to remove sulfur oxides. The seawater supplied to the desulfurization tower 2 is naturally dropped inside by ejecting from the upper portion in the desulfurization tower, whereas the boiler exhaust gas supplied to the desulfurization tower 2 is taken from the lower portion of the desulfurization tower 2 It is introduced into the desulfurization tower and rises.
於脫硫塔2的內部，配置有以預定間隔設置且於上下方向有複數段的多孔架板3。此多孔架板3，為沒有堰及溢流部的多孔板，藉由使落下的海水與上昇的鍋爐排氣經過多數的孔4，使其產生相互接觸之氣液接觸。Inside the desulfurization tower 2, a porous frame plate 3 which is provided at a predetermined interval and has a plurality of sections in the vertical direction is disposed. The porous frame 3 is a perforated plate having no weir and overflow, and the falling seawater and the rising boiler are exhausted through the plurality of holes 4 to cause gas-liquid contact with each other.
亦即，多孔架板3，係發揮作為讓由海水供給管5導入的海水與從鍋爐排氣供給口7導入的鍋爐排氣形成氣液接觸之濕式基材的功能，利用形成此氣液接觸，使吸收液之海水吸收並去除鍋爐排氣中的硫氧化物。對於通過多孔架板3進行氣液接觸之後，換言之，在吸收並去除鍋爐排 氣中的硫氧化物之脫硫後，海水流下至脫硫塔2的底部並從海水排出管6流出，鍋爐排氣則從於上部開口的鍋爐排氣排出口8流出。In other words, the porous frame plate 3 functions as a wet substrate in which the seawater introduced from the seawater supply pipe 5 and the boiler exhaust gas introduced from the boiler exhaust gas supply port 7 are in gas-liquid contact, and the gas-liquid is formed. Contact to absorb the seawater of the absorbing liquid and remove sulfur oxides from the boiler exhaust. After gas-liquid contact through the porous shelf 3, in other words, in the absorption and removal of the boiler row After desulfurization of the sulfur oxides in the gas, the seawater flows down to the bottom of the desulfurization tower 2 and flows out from the seawater discharge pipe 6, and the boiler exhaust gas flows out from the boiler exhaust gas discharge port 8 opened at the upper portion.
於上述所構成的海水脫硫裝置1A中，是配置有用以將脫硫塔2內的水平斷面積縮小至預定值以下之區隔鉛直方向的區隔板10。此區隔板10，是依多孔架板3的每一段獨立地設置。亦即，區隔板10，藉由形成從各段的多孔架板3朝向上方大致垂直地立起之壁面，藉此依多孔架板3的每一段分割水平斷面積。In the seawater desulfurization apparatus 1A configured as described above, the partition plate 10 in which the horizontal cross-sectional area in the desulfurization tower 2 is reduced to a predetermined value or less in the vertical direction is disposed. The partition 10 of this zone is independently provided for each section of the porous shelf 3. That is, the partition plate 10 divides the horizontal sectional area by each of the porous frame plates 3 by forming wall faces which rise substantially vertically upward from the porous frame plates 3 of the respective stages.
第2圖，是顯示藉由區隔板10之水平斷面積的分割例的圖。在此分割例中，是藉由：將徑向對半分割的圓形分隔板11、及將圓周方向以45度間距作8等分分割的輻射分隔板12、以及將圓形分隔板11的外周部更進一步地於圓周方向對半分割的輻射輔助分隔板13，將脫硫塔2的水平斷面積做24等分分割。Fig. 2 is a view showing an example of division by the horizontal sectional area of the partition plate 10. In this divisional example, the circular partition plate 11 which is vertically divided into half, and the radiation partitioning plate 12 which divides the circumferential direction by 8 degrees in the circumferential direction, and the circular partition are separated. The outer peripheral portion of the plate 11 is further divided into a half-divided radiation-assisted partition plate 13 in the circumferential direction, and the horizontal cross-sectional area of the desulfurization tower 2 is divided into 24 equal parts.
上述之區隔板10的高度H，是設到至少比濕式基材3上的海水滯留高度h還高的位置(H>h)。亦即，從成為濕式基材的多孔架板3朝向上方立起之壁面的高度H，是被設定成使滯留在濕式基材3上的海水不會超過區隔板10朝向鄰接的區塊流出。滯留於多孔架板3的海水滯留高度h，由於可以由設於多孔架板3之孔4的開口面積合計值與海水的供給量之間的關係所推測出，所以以比此推測值還高地來設置區隔板10即可。The height H of the partition plate 10 described above is set to at least a position (H>h) higher than the seawater retention height h on the wet base material 3. In other words, the height H of the wall surface rising upward from the porous frame 3 which becomes the wet base material is set such that the seawater retained on the wet base material 3 does not exceed the area in which the partition plate 10 faces the adjacent portion. The block flows out. The seawater retention height h of the porous frame plate 3 can be estimated from the relationship between the total opening area of the hole 4 provided in the porous frame plate 3 and the supply amount of seawater, so that the estimated value is higher than this. It is sufficient to set the zone partition 10.
依據上述構成的海水脫硫裝置1A，從脫硫塔2上方 流下的海水，是通過由區隔板10分割至預定的水平斷面積以下的多孔架板3而落下。此時，滯留於多孔架板3的海水面W，由於比區隔板10的高度h還低，故藉由區隔板10限制海水的流動方向，所滯留的海水不會超過區隔板10而產生橫流。如此之防止橫流，由於從下方上昇起來的鍋爐排氣在通過多孔架板3亦具有大致相同的功能，所以鍋爐排氣與海水不會產生偏流。According to the above-described seawater desulfurization apparatus 1A, from above the desulfurization tower 2 The seawater flowing down is dropped by the porous frame plate 3 divided by the partition plate 10 to a predetermined horizontal sectional area or less. At this time, since the sea surface W remaining in the porous frame plate 3 is lower than the height h of the partition plate 10, the flow direction of the seawater is restricted by the partition plate 10, and the retained seawater does not exceed the partition plate 10 And create a cross flow. In such a manner as to prevent cross flow, since the boiler exhaust gas rising from below also has substantially the same function through the porous frame plate 3, the boiler exhaust gas and the seawater do not cause a drift.
又，為了更確實地防止橫向流動，在設定區隔板10的高度h時，以受到從下方上昇流動的鍋爐排氣之影響引起波浪之海水面W的最大高度來作為基準即可。In addition, in order to prevent the lateral flow more reliably, when the height h of the partition plate 10 is set, the maximum height of the sea surface W of the wave may be caused by the influence of the boiler exhaust flowing upward from the lower side.
其結果，滯留於多孔架板3之各分割區塊內的海水面W，由於每一區塊之差變小而成為大致一定，換言之，由於滯留於多孔架板3之各分割區塊的海水分布大致維持均一，所以可以防止從下方上昇的鍋爐排氣與海水呈分離無相互接觸地穿過多孔架板3之所謂竄氣現象。As a result, the sea surface W remaining in each of the divided blocks of the porous frame plate 3 becomes substantially constant as the difference between each block becomes small, in other words, the seawater retained in each divided block of the porous frame plate 3 The distribution is substantially uniform, so that the so-called helium phenomenon in which the boiler exhaust gas rising from below is separated from the seawater without passing through the porous frame plate 3 can be prevented.
如此地，當防止了海水與鍋爐排氣的偏流或竄氣現象時，由於通過多孔架板3的海水與鍋爐排氣能夠充分地接觸，所以可以有效地利用供給至脫硫塔2的海水，效率良好地進行脫硫。In this way, when the seawater and the boiler exhaust gas are prevented from drifting or suffocating, since the seawater passing through the porous shelf 3 can be sufficiently brought into contact with the boiler exhaust gas, the seawater supplied to the desulfurization tower 2 can be effectively utilized. Desulfurization is carried out efficiently.
此外，在上述的實施形態中，雖說明了在脫硫塔2內配置多孔架板3的海水脫硫裝置1A，但如以下所說明，取代利用多孔架板3的氣液接觸，以採用噴霧方式或充填方式亦可。又，在以下說明所使用的圖面中，對於與上述實施形態相同樣的部分標示以相同的元件符號，並省略其 詳細說明。Further, in the above-described embodiment, the seawater desulfurization apparatus 1A in which the porous frame 3 is disposed in the desulfurization tower 2 has been described. However, as described below, instead of using the gas-liquid contact of the porous frame 3, a spray is used. The method or filling method is also available. In the drawings used in the following description, the same components as those in the above-described embodiment are denoted by the same reference numerals, and their description is omitted. Detailed description.
第4圖所示的第1變形例，為採用由噴霧方式之氣液接觸的海水脫硫裝置1B。此裝置，是於脫硫塔2的內部配置多數個噴射海水的噴霧噴頭20，藉由從噴霧噴頭20所噴射出的海水與鍋爐排氣之氣液接觸來脫硫。此情形下之區隔板10，例如是利用噴霧配管21等支持於預定位置。The first modification shown in Fig. 4 is a seawater desulfurization apparatus 1B that is in contact with a gas-liquid contact by a spray method. In this apparatus, a plurality of spray heads 20 for spraying seawater are disposed inside the desulfurization tower 2, and the seawater sprayed from the spray heads 20 is brought into contact with the gas and liquid of the boiler exhaust gas to desulfurize. The zone partition 10 in this case is supported at a predetermined position by, for example, a spray pipe 21 or the like.
對於如此所構成之海水脫硫裝置1B，亦可以藉由以區隔板10將脫硫塔2的內部分割至使其水平斷面積成為預定值以下之方式，來防止鍋爐排氣的偏流或竄氣現象。又，此噴霧方式，以適切地進行噴霧噴頭20的配置，可以大致均一地分散海水來進行噴射。In the seawater desulfurization apparatus 1B configured as described above, the inside of the desulfurization tower 2 can be divided by the partition plate 10 so that the horizontal cross-sectional area becomes equal to or less than a predetermined value, thereby preventing the bias or the enthalpy of the boiler exhaust gas. Gas phenomenon. Moreover, in this spraying method, the arrangement of the spray heads 20 is appropriately performed, and the seawater can be dispersed substantially uniformly and sprayed.
第5(a)圖所示之第2變形例的海水脫硫裝置1C，是採用以充填方式之氣液接觸者。在此方式中，是在脫硫塔2的內部設置促進海水與鍋爐排氣之氣液接觸的充填單元30。在此，是以區隔板10將充填單元30的水平斷面分割成複數個，且分割後的各水平斷面是小於預定值以下。The seawater desulfurization apparatus 1C of the second modification shown in Fig. 5(a) is a gas-liquid contact by a filling method. In this manner, a filling unit 30 that promotes gas-liquid contact between seawater and boiler exhaust gas is provided inside the desulfurization tower 2. Here, the horizontal section of the filling unit 30 is divided into a plurality of sections by the partition plate 10, and each of the divided horizontal sections is less than a predetermined value.
又，於第5(b)圖，是顯示利用充填方式之以往的海水脫硫裝置1C'，此情形之充填單元30’，其水平面並沒有被分割而與脫硫塔2的斷面大致一致。Further, in the fifth (b) diagram, the conventional seawater desulfurization apparatus 1C' using the filling method is shown. In this case, the filling unit 30' has a horizontal plane which is not divided and substantially coincides with the cross section of the desulfurization tower 2. .
對於如此所構成的海水脫硫裝置1C，由於設置於脫硫塔2內部之充填單元30的水平斷面積是以區隔板10分割至預定值以下，所以可以防止鍋爐排氣的偏流或竄氣現象。In the seawater desulfurization apparatus 1C thus constituted, since the horizontal sectional area of the filling unit 30 provided inside the desulfurization tower 2 is divided by the partition plate 10 to a predetermined value or less, it is possible to prevent the bias or the helium of the boiler exhaust gas. phenomenon.
如上述般地，由於是配置有將脫硫塔2內的水平斷面積區隔至預定值以下之鉛直方向的區隔板來限制海水的橫向流動，所以朝上上昇之鍋爐排氣的流動以及朝下流下之海水的流動分布在水平斷面內難以產生成為不均一的偏流。因此，對於採用海水法之海水脫硫裝置1A、1B、1C，可以以容易且簡單的構造確實地抑制或防止因脫硫塔2的大型化等所容易產生的偏流及鍋爐排氣的竄氣現象，而能夠得到良好的脫硫性能。As described above, since the partition plate in which the horizontal cross-sectional area in the desulfurization tower 2 is partitioned to a predetermined value or less is arranged to restrict the lateral flow of the seawater, the flow of the boiler exhaust gas which rises upward and The flow distribution of the seawater flowing down is difficult to produce a non-uniform bias flow in the horizontal section. Therefore, the seawater desulfurization apparatuses 1A, 1B, and 1C using the seawater method can reliably suppress or prevent the bias current which is easily generated due to the increase in size of the desulfurization tower 2 and the helium gas of the boiler exhaust gas with an easy and simple structure. Phenomenon, and good desulfurization performance can be obtained.
又，本發明並非是由上述實施形態所限定，在不脫離本發明之主旨的範圍內可以適當地變更。In addition, the present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit and scope of the invention.
1A、1B、1C‧‧‧海水脫硫裝置1A, 1B, 1C‧‧‧ seawater desulfurization unit
2‧‧‧脫硫塔2‧‧‧Desulfurization tower
3‧‧‧多孔架板3‧‧‧Perforated shelf
4‧‧‧孔4‧‧‧ hole
5‧‧‧海水供給管5‧‧‧Seawater supply pipe
6‧‧‧海水排出管6‧‧‧Seawater discharge pipe
7‧‧‧鍋爐排氣供給口7‧‧‧Boiler exhaust supply port
8‧‧‧鍋爐排氣排出口8‧‧‧Boiler exhaust outlet
10‧‧‧區隔板10‧‧‧ District partition
20‧‧‧噴霧噴嘴20‧‧‧ spray nozzle
30‧‧‧充填單元30‧‧‧filling unit
W‧‧‧海水面W‧‧‧Sea surface
第1圖是本發明之海水脫硫裝置之一實施形態的斷面圖。Fig. 1 is a cross-sectional view showing an embodiment of a seawater desulfurization apparatus of the present invention.
第2圖是第1圖之A-A線的斷面圖。Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1.
第3圖是隔板之高度H的說明圖。Fig. 3 is an explanatory view of the height H of the partition.
第4圖是本發明之海水脫硫裝置之第1變形例的斷面圖。Fig. 4 is a cross-sectional view showing a first modification of the seawater desulfurization apparatus of the present invention.
第5圖(a)是本發明之海水脫硫裝置之第2變形例的斷面圖，是採用以充填方式之氣液接觸者；第5(b)圖，是顯示利用充填方式之先前的海水脫硫裝置。Fig. 5(a) is a cross-sectional view showing a second modification of the seawater desulfurization apparatus of the present invention, which is a gas-liquid contact by a filling method, and Fig. 5(b) is a view showing a previous method using a filling method. Seawater desulfurization unit.
第6圖是顯示海水脫硫裝置之先前技術之構造的斷面圖。Fig. 6 is a cross-sectional view showing the configuration of the prior art of the seawater desulfurization apparatus.
1A‧‧‧海水脫硫裝置1A‧‧‧Seawater desulfurization unit
2‧‧‧脫硫塔2‧‧‧Desulfurization tower
3‧‧‧多孔架板3‧‧‧Perforated shelf
4‧‧‧孔4‧‧‧ hole
5‧‧‧海水供給管5‧‧‧Seawater supply pipe
6‧‧‧海水排出管6‧‧‧Seawater discharge pipe
7‧‧‧鍋爐排氣供給口7‧‧‧Boiler exhaust supply port
8‧‧‧鍋爐排氣排出口8‧‧‧Boiler exhaust outlet
10‧‧‧區隔板10‧‧‧ District partition
W‧‧‧海水面W‧‧‧Sea surface
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007040457A JP5721303B2 (en) | 2007-02-21 | 2007-02-21 | Flue gas desulfurization equipment |
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| TW200902139A TW200902139A (en) | 2009-01-16 |
| TWI389735B true TWI389735B (en) | 2013-03-21 |
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| TW097105920A TWI389735B (en) | 2007-02-21 | 2008-02-20 | Flue gas desulfurization device |
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| JP (1) | JP5721303B2 (en) |
| EG (1) | EG25138A (en) |
| MY (1) | MY186545A (en) |
| SG (1) | SG178748A1 (en) |
| TW (1) | TWI389735B (en) |
| WO (1) | WO2008102823A1 (en) |
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| CN102166430B (en) * | 2011-03-08 | 2012-10-24 | 江苏科圣化工机械有限公司 | Method and device for flue gas desulfurization and desorption |
| WO2014021380A1 (en) * | 2012-07-31 | 2014-02-06 | 月島機械株式会社 | Exhaust gas desulfurization device and exhaust gas desulfurization method |
| CN103058351B (en) * | 2013-01-21 | 2014-03-05 | 青岛双瑞海洋环境工程股份有限公司 | Oxygen supply method and device suitable for ship emission seawater desulfurization |
| CN107596870B (en) * | 2017-10-30 | 2023-07-07 | 东方电气集团东方锅炉股份有限公司 | Seawater flue gas desulfurization absorption tower |
| JP7193261B2 (en) * | 2018-07-13 | 2022-12-20 | 三菱重工業株式会社 | Wet type flue gas desulfurization equipment control method, wet type flue gas desulfurization equipment control device, and remote monitoring system provided with this wet type flue gas desulfurization equipment control device |
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| JPH06328A (en) * | 1992-06-23 | 1994-01-11 | Babcock Hitachi Kk | Wet flue gas desulfurizer |
| JPH11290643A (en) * | 1998-04-13 | 1999-10-26 | Fuji Kasui Eng Co Ltd | Removal of acidic component of combustion gas by sea water |
| JP2001129352A (en) * | 1999-11-02 | 2001-05-15 | Fujikasui Engineering Co Ltd | Exhaust gas desulfurization advanced treatment process using sea water |
| JP2003190738A (en) * | 2001-12-27 | 2003-07-08 | Asahi Kasei Corp | Desulfurization method of combustion exhaust gas |
| JP2004033982A (en) * | 2002-07-05 | 2004-02-05 | Mitsubishi Heavy Ind Ltd | Flow straightening apparatus and flue gas desulfurization apparatus |
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| EG25138A (en) | 2011-09-25 |
| WO2008102823A1 (en) | 2008-08-28 |
| SG178748A1 (en) | 2012-03-29 |
| MY186545A (en) | 2021-07-26 |
| JP5721303B2 (en) | 2015-05-20 |
| JP2008200619A (en) | 2008-09-04 |
| TW200902139A (en) | 2009-01-16 |
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