PH12015501897B1 - Seawater flue-gas desulfurization device and method for operating same - Google Patents
Seawater flue-gas desulfurization device and method for operating same Download PDFInfo
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- PH12015501897B1 PH12015501897B1 PH12015501897A PH12015501897A PH12015501897B1 PH 12015501897 B1 PH12015501897 B1 PH 12015501897B1 PH 12015501897 A PH12015501897 A PH 12015501897A PH 12015501897 A PH12015501897 A PH 12015501897A PH 12015501897 B1 PH12015501897 B1 PH 12015501897B1
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- Philippines
- Prior art keywords
- seawater
- dust
- spray nozzle
- desulfurization
- sprayed
- Prior art date
Links
- 239000013535 sea water Substances 0.000 title claims abstract description 240
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 130
- 230000023556 desulfurization Effects 0.000 title claims abstract description 130
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003546 flue gas Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 5
- 238000010521 absorption reaction Methods 0.000 claims abstract description 163
- 239000007921 spray Substances 0.000 claims abstract description 114
- 239000007789 gas Substances 0.000 claims abstract description 93
- 230000003647 oxidation Effects 0.000 claims abstract description 44
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 44
- 239000003595 mist Substances 0.000 claims abstract description 32
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 13
- 229910052815 sulfur oxide Inorganic materials 0.000 claims description 28
- 239000000428 dust Substances 0.000 claims description 19
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 18
- 238000005381 potential energy Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 53
- 239000004071 soot Substances 0.000 abstract 2
- 235000019738 Limestone Nutrition 0.000 description 12
- 239000006028 limestone Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000010790 dilution Methods 0.000 description 7
- 239000012895 dilution Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002351 wastewater Substances 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/04—Regenerating the washing fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/08—Means for controlling the separation process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
- B01D2247/106—Means for removing the washing fluid dispersed in the gas or vapours using a structured demister, e.g. tortuous channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
- B01D2252/1035—Sea water
Abstract
A seawater flue-gas desulfurization device provided with an absorption tower (1) and an oxidation tank (14). Said absorption tower (1) is provided with the following: dust-removal spray nozzles (8) that repeatedly supply seawater from a circulation tank (5) so as to absorb or catalytically remove soot and heavy metals from an exhaust gas; desulfurization spray nozzles (9), above the dust-removal spray nozzles (8), that spray fresh seawater so as to absorb and thereby remove SOx from the exhaust gas; and two or more collectors (10), laid out in a staggered pattern between the nozzles (8 and 9), that collect all of the seawater sprayed by the desulfurization spray nozzles (9). All of the seawater sprayed by the desulfurization spray nozzles (9) is collected by the collectors (10) and oxidized in the abovementioned oxidation tank (14). In this seawater flue-gas desulfurization device, a flow-control member (22) that controls the flow of the sprayed seawater is laid out between the collectors (10) and the desulfurization spray nozzles (9) and a mist eliminator (23) is laid out between the collectors (10) and the dust-removal spray nozzles (8) so as to prevent any liquid from passing between an absorption section (A) of the absorption tower (1), which contains the desulfurization spray nozzles (9) and removes SOx from the exhaust gas, and a dust-removal section (B) of the absorption tower (1), which contains the dust-removal spray nozzles (8) and removes soot and heavy metals from the exhaust gas. The treatment load associated with purifying contaminated seawater in the dust-removal section (B) is thus reduced.
Description
. . = used as the absorption part A provided with the spray nozzle . . 121 for spraying an absorption liquid containing limestone = into an exhaust gas. The lower stage is used as the dust- = removal part B in which an absorption liquid from the o circulation tank 103 circulates. The absorption liquid i. collected by the collector 122 is temporarily stored in the - circulation tank 118 of the absorption part A and then again - circulated and supplied to the absorption part A. = oi
Lr
While the hollow part of the absorption tower 100 is divided into the vertical two stages by the collector 122, the absorption tower absorption part A and absorption tower dust-removal part B are not completely separated from each other by the collector 122. The absorption liquid sprayed in the absorption part A also flows down into the dust- removal part B. Part of the circulation tank 103 in a lower part of the dust-removal part B is separated and used as a liquid storing part 109, and limestone particles having large particle diameters are recovered in the liquid storing part 109.
That is, in the flue-gas desulfurization device shown in
Fig. 6, the absorption part A and dust-removal part B are not completely functionally separated from each other. This technology solely aims to prevent cavitation of the pump when extracting slurry from the circulation tank 103 and to smoothly oxidize sulfite by blowing air into the circulation
CO
. : tank 103. The absorption part A and dust-removal part B are ~ not completely separated from each other by the collector i" 122, nor are the exhaust gas treating functions of the . absorption part A and dust-removal part B separated from - each other.
In the technologies shown in Patent Literature 1 and :
Figs. 5 and 7, the absorption part including the spray = nozzle for spraying seawater into the exhaust gas is - disposed in the upper stage of the absorption tower; the dust-removal part in which seawater or absorption liquid stored in the circulation tank is circulated is disposed in the lower stage; and both parts are substantially separated from each other by the collector.
However, while, in these technologies, the seawater flowing down from the absorption part A and serving as an exhaust gas absorption liquid is partially collected by the collector, a significant amount of the seawater flows from gaps in the collectors into the dust-removal part B in the lower stage. For this reason, the flowing-in seawater is mixed into seawater or a mixture of an absorption liquid containing limestone and seawater, which is circulating in the dust-removal part B.
Since the dust and heavy metals in the exhaust gas are absorbed and removed by the seawater or the mixture of the
> absorption liquid containing limestone and seawater, which - is circulating from the storing part to the dust-removal = part B, the seawater in the storing part cannot be released o without being purified. If a large amount of seawater flows down from the absorption part A into the seawater stored in — the storing part, the flowing-in seawater would be released - to the sea without being purified, due to the limited capacity of the absorption tower. = ~
Further, part of the seawater evaporates in the dust- removal part B due to the heat of the exhaust gas and therefore seawater always must be added to the dust-removal part B. However, if the amount of the seawater which flows from the gaps of the collector into the dust-removal part B becomes several times larger than the amount of the seawater added to the dust-removal part B, the water balance would be lost. Consequently, the space of the storing part cannot accommodate.
Further, if part of the seawater sprayed in the dust- removal part B, which aims to remove dust and heavy metals, flows into the absorption part A as a mist, the dust and heavy metals would be released into the sea through the collector.
For these reasons, there has been sought a seawater flue-gas desulfurization device in a collector for separating the absorption part A from the dust-removal part =
B, where the exhaust gas can only pass, but the liquid is = completely blocked. .
An object of the present invention is to provide a ~ seawater flue-gas desulfurization device which, in an i absorption tower thereof, prevents the passage of a liquid = between a dust-removal part for eliminating dust and heavy i metals in an exhaust gas and an absorption part for o eliminating sulfur oxides in the exhaust gas, and an ~ operating method thereof. -
The object of the present invention can be accomplished by employing the following configurations.
A first aspect of the present invention provides a seawater flue-gas desulfurization device that sprays seawater into an exhaust gas discharged from a combustion device including a boiler, and absorbs and removes sulfur oxides in the exhaust (gas. The seawater flue-gas desulfurization device comprises an absorption tower and an oxidation tank. The absorption tower comprises an inlet through which an exhaust gas 1s introduced, a circulation tank disposed below the inlet and configured to store seawater, a dust-removal spray nozzle configured to repeatedly supply seawater in the circulation tank and to absorb or catalytically remove dust and heavy metals in the
. : = exhaust gas introduced through the inlet, a desulfurization = spray nozzle disposed above the dust-removal spray nozzle and configured to spray only fresh seawater and to absorb © and remove sulfur oxides in the exhaust gas introduced ** through the inlet, and a collector disposed between the - dust-removal spray nozzle and the desulfurization spray = bi nozzle and configured to collect the seawater sprayed from - the desulfurization spray nozzle. The oxidation tank is = configured to introduce the sprayed seawater collected by = the collector and to supply oxidation air. In the seawater flue-gas desulfurization device, a flow-control member for flow-controlling the sprayed seawater is disposed between the collector and the desulfurization spray nozzle, and a mist eliminator for eliminating a mist is disposed between the collector and the dust-removal spray nozzle, and a space in the absorption tower is divided by the flow- control member, the collector, and the mist eliminator into an absorption part A provided with the desulfurization spray nozzle and a dust-removal part B disposed below the absorption part A and provided with the dust-removal spray nozzle.
A second aspect of the present invention provides the seawater flue-gas desulfurization device according to the first aspect, wherein the flow-control member comprises a porous plate, multiple fillers, or a slit plate in which plates having multiple vertical planes are arranged in
; parallel. - poi
A third aspect of the present invention provides the - seawater flue-gas desulfurization device according to the - first aspect, wherein the seawater flue-gas desulfurization .- device uses a pump which uses potential energy when fresh - seawater sprayed by the desulfurization spray nozzle and w collected by the collector is supplied to the oxidation = tank, as a power source of seawater in the circulation tank - to be sprayed from the dust-removal spray nozzle.
A fourth aspect of the present invention provides the seawater flue-gas desulfurization device according to the first aspect, wherein the collector comprises collectors at least in two rows, and collectors in a lower row are arranged in a staggered manner below gaps between collectors in an upper row.
A fifth aspect of the present invention provides a method for operating a seawater flue-gas desulfurization device, wherein, in the seawater flue-gas desulfurization device according to the first aspect, the ratio of the supply amount of seawater in the circulation tank 5 sprayed from the dust-removal spray nozzle 8 with respect to the amount of exhaust gas per unit time and the supply amount of fresh seawater sprayed from the desulfurization spray nozzle 9 with respect to the amount of exhaust gas per unit
‘ - time is set to 1 to 4:5 to 17. o (OPERATION) ©
According to the present invention, fresh seawater is Le sprayed from the desulfurization spray nozzle into an - exhaust gas discharged from the combustion device in the = absorption part of the absorption tower and thus sulfur or oxides in the exhaust gas are absorbed and removed. The - poi seawater which has absorbed the sulfur oxides in the exhaust gas is flow-controlled by the flow-control member and collected by the collector. At this time, the seawater sprayed from the desulfurization spray nozzle flows vertically downward by the collector while being flow- controlled by the flow-control member. Thus, the flow-down area of the seawater is limited and all the flowing-down seawater can be collected by the collector.
As seen above, the fresh seawater sprayed from the desulfurization spray nozzle absorbs sulfur oxides in the exhaust gas and then flows down through all the ccllectors into the oxidation tank disposed outside the absorption tower. Thus, the seawater sprayed in the absorption part does not flow down into the dust-removal part.
Further, since the amount of the seawater sprayed in the absorption part is much larger than that of the seawater sprayed in the dust-removal part, the sulfur oxides in the
. : exhaust gas can be sufficiently absorbed and removed. -
As seen above, although a large amount of seawater is = sprayed in the absorption part, all the seawater flows down . into the oxidation tank, is oxidized in the oxidation tank, - and then can be released into the sea. Accordingly, the fo seawater sprayed in the absorption part is collected by the - flow-control member and collector and does not flow down = into the dust-removal part. As a result, although a large = amount of the seawater is sprayed in the absorption part, a . high purification load is not imposed on the dust-removal part.
In the dust-removal part, on the other hand, the seawater stored in the circulation tank is repeatedly sprayed from the dust-removal spray nozzle and thus can absorb or catalytically remove dust and heavy metals in the exhaust gas. The seawater repeatedly sprayed from the dust- removal spray nozzle is significantly contaminated by dust or the like compared to the seawater sprayed from the desulfurization spray nozzle in the absorption part.
Accordingly, the contaminated seawater can be released into the sea only after purified in the waste water treatment tank.
If the seawater repeatedly sprayed from the dust- removal spray nozzle rises to the absorption part, the dust and heavy metals collected by the seawater would be released t into the sea through the collector. This can result in ~ marine pollution and therefore must be avoided. For this reason, the mist is removed using the mist eliminator . disposed above the dust-removal spray nozzle and below the ~ collector. os
ADVANTAGEOUS EFFECTS OF INVENTION a
A major characteristic of the first aspect 1s that the seawater sprayed respectively in the dust-removal part and . in the absorption part is prevented from being mixed with each other, by the flow-control member, collector, and mist eliminator and can be treated independently. Another characteristic of the first aspect is that the seawater subjected to the purification treatment of the present embodiment is cleaner compared to the traditional purification treatment of the exhaust gas using seawater.
Although a large amount of seawater is sprayed in the absorption part, a high contaminated seawater purification load is not imposed on the dust-removal part. This seawater flue-gas desulfurization device is useful as a flue-gas desulfurization device using seawater, which is inexpensive.
According to the second aspect of the present invention, in addition to the effects of the first aspect, the sprayed seawater spreading out from the absorption spray nozzle can flow vertically downward and the flow-controlled sprayed
. seawater can be reliably collected by the collector by using - the flow-control member consisting of a porous plate, - multiple fillers, or a slit plate in which multiple plates . having a vertical plane are arranged in parallel. -
According to the third aspect of the present invention, : in addition to the effects of the first aspect, the - seawater flue-gas desulfurization device uses a pump which = uses potential energy when fresh seawater sprayed by the - desulfurization spray nozzle and collected by the collector is supplied to the oxidation tank, as a power source of seawater in the circulation tank sprayed from the dust- removal spray nozzle. Thus, use of electricity as power used for the dust-removal spray nozzle can be avoided and the cost can be reduced.
According to the fourth aspect of the present invention, in addition to the advantageous effects of the first aspect, collectors in a lower row are arranged in a staggered manner below gaps between collectors in an upper row by using collectors at least in two rows. Consequently, fresh seawater used in the absorption part no longer flows down into the dust-removal part; a smaller amount of seawater is used in the dust-removal part compared to that in the absorption part; and contaminated seawater used in the dust- removal part is easily purified.
CT TT - nn 1 ! * .
DESCRIPTION ~ * . . a, [a ‘ és; Cs Li
SEAWATER FLUE-GAS DESULFURIZATION DEVICE AND METHOD He 1s v
OPERATING SAME Hy 8
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TECHNICAL FIELD ¥ - < oo -, ft
The present invention relates to a flue-gas freatment = device that removes sulfur oxides, which are hazardous = components of an exhaust gas produced by a combustion device, such as a boiler, disposed at a thermal power station, factory, or the like. In particular, the invention relates to a seawater flue-gas desulfurization device, which uses seawater as a desulfurization absorption liquid, and an operating method therefor.
A seawater flue-gas desulfurization device, which uses seawater, may be used as a flue-gas desulfurization device for a thermal power station on a coast, particularly in south-east Asia or the like. In seawater desulfurization, seawater as an absorption liquid absorbs sulfur oxides in an exhaust gas, and the resulting seawater is aerated and then released into the sea. Thus, the facility cost can be reduced.
. | : :
According to the fifth aspect of the present invention, - in the seawater flue-gas desulfurization device of the first . aspect, the ratio of the supply amount of seawater in the = circulation tank sprayed from the dust-removal spray nozzle o with respect to the amount of exhaust gas per unit time and the supply amount of fresh seawater sprayed from the - desulfurization spray nozzle with respect to the amount of - exhaust gas per unit time is set to 1 to 4:5 to 17. °
Consequently, the exhaust gas can be purified using seawater without increasing the contaminated seawater purification load. Thus, the amount of seawater sprayed in the absorption part can be easily set to within the legally acceptable range relating to SOx removal efficiency in accordance with the concentration of S02 in the exhaust gas.
Fig. 1 is a system diagram of a seawater flue-gas desulfurization device according to an embodiment of the present invention.
Fig. 2 shows examples of a flow-control member disposed in a desulfurization absorption tower of Fig. 1.
Fig. 3 is a longitudinal sectional view of collectors disposed in the desulfurization absorption tower of Fig. 1.
Fig. 4 is a system diagram of a seawater flue-gas desulfurization device of the prior art.
Fig. 5 is an overall configuration diagram of an exhaust
' - gas treatment device according to Japanese Patent -
Application No. 2012-279808 (filed on Dec. 21, 2012).
Fig. 6 is a configuration diagram of a flue-gas = desulfurization device using an absorption liquid os containing limestone according to Japanese Unexamined -
Patent Application Publication No. 61-258730. -
Fig. 7 is a configuration diagram of an exhaust gas ~ treatment device according to Japanese Patent Application No. = 2013-58724 (filed on Mar. 21, 2013). -
Now, an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 shows a system diagram of a seawater flue-gas desulfurization device according to an embodiment of the present invention. Note that in Fig. 1, some of the reference signs which are the same as those of the members of the wet desulfurization device of Fig. 4 are not shown.
The seawater wet desulfurization device of the present embodiment includes a desulfurization absorption tower 1 that mainly treats SOx in a flue gas from a boiler, an inlet duct 2 through which the exhaust gas is introduced into the desulfurization absorption tower 1, an outlet duct 3 through which the exhaust gas is discharged from the desulfurization absorption tower 1, a desulfurization spray nozzle 9 that
CO
: © sprays seawater for absorbing SOx in the exhaust gas into ~ the exhaust gas, a mist eliminator 7 that removes a mist i. entrained by the flow of the exhaust gas, a seawater pump 18 . for supplying the seawater to the desulfurization spray ~ nozzle 9, an oxidation tank 14 for oxidizing sulfurous acid produced by absorption of SOx, an oxidation air blower 16 - that feeds air to be supplied to the oxidation tank 14, an air diffusion nozzle 17 that jets the air fed by the = oxidation air blower 16, and the like. As seen above, this - seawater wet desulfurization device has the same configuration as the wet desulfurization device of Fig. 4.
The flue gas is approximately horizontally introduced through the inlet duct 2 into the desulfurization absorption tower 1 and discharged through the outlet duct 3 disposed at the top of the desulfurization absorption tower 1.
Seawater heated by a boiler condenser (not shown) is fed to the most upstream part of the oxidation tank 14 through a dilution seawater pipe L3. In the desulfurization absorption tower 1, part of the seawater is pumped by the seawater pump 18 and fed, as fresh seawater, to the desulfurization spray nozzle 9 through a seawater pipe for absorption liquid L2 and to a circulation tank 5 in a lower part of the desulfurization absorption tower 1 through a seawater pipe L7.
The fresh seawater fed to the desulfurization spray
GOSS
A t nozzle 9 is sprayed into the desulfurization absorption re tower 1 in the form of minute droplets and contacts the exhaust gas, that is, gas-liquid contact occurs. Thus, SOx y (mostly SO2) in the exhaust gas is selectively absorbed and - removed on the absorption droplet surface of the fre desulfurization spray nozzle 9. -
The seawater sprayed from the desulfurization spray = nozzle 9 absorbs sulfur oxides in the exhaust gas, and the y resulting seawater is flow-controlled by a flow-control member 22 and collected by collectors 10. The space between the desulfurization spray nozzle 9 and collectors 10 will be referred to as the absorption part A of the desulfurization absorption tower 1.
The flow of the exhaust gas entrains a mist of the seawater sprayed from the desulfurization spray nozzle 9, and the mist is collected by the first mist eliminator 7 disposed at the outlet duct 3 in an upper part of the . 20 desulfurization absorption tower 1. The exhaust gas that has passed through the mist eliminator 7 is re-heated as necessary and then discharged into the atmosphere through a smokestack (not shown).
The seawater sprayed from the desulfurization spray nozzle 9 in the absorption part A is flow-controlled vertically downward by the flow-control member 22 and then
. | : flows down. Thus, the flow-down area of the seawater is - limited. It is important to dispose an area for receiving = the liquid from the collectors 10 in a lower part of the ~ limited seawater flow-down area. Further, there is prevented the occurrence of gaps between the collectors 10 he and between the collectors 10 at both ends and the wall - surfaces of the absorption tower 1 when seen from above. -
Thus, all the seawater flowing down from the flow-control 5 member 22 can be collected by the collectors 10. -
A liquid collecting gutter 11 (seawater collecting member) is disposed at the most downstream part of the collectors 10, which collect the sprayed seawater. A dust- removal spray nozzle 8 different from the desulfurization spray nozzle 9 is disposed in a dust-removal part B, which is the space between the liquid surface of the circulation tank 5 below the collectors 10 and liquid collecting gutter 11, and the collectors 10. Seawater (absorption liquid) stored in the circulation tank 5 in a lower part of the desulfurization absorption tower 1 is circulated and supplied to the dust-removal spray nozzle 8 by an absorption liquid circulation pump 4.
The absorption liquid (seawater) in the circulation tank 5 is agitated by an agitator 6. By spraying the dust- removal seawater (absorption liquid) from the dust-removal spray nozzle 8 while circulating the dust-removal seawater,
CT
. dust and heavy metals in the exhaust gas are absorbed or - catalytically removed by the dust-removal seawater serving - as an absorption liquid. The dust-removal seawater serving ~ as an absorption liquid in the circulation tank 5 is partially extracted through an extraction pipe of absorption ~ liquid L1 and purified in a waste water treatment tank 24 - using pH adjustment, chelating agent addition, chemical precipitation, or the like. The treated liquid is fed to the x oxidation tank 14 through a water pipe LS. 2
The air diffusion nozzle 17 is disposed in the oxidation tank 14. Sulfite in the seawater is oxidized by oxygen contained in bubbles sprayed from the air diffusion nozzle 17 based on an atmosphere supplied from the oxidation air blower 16 through an air pipe L6. The treated seawater is returned to a sea 12.
A second mist eliminator 23, which prevents part of the seawater sprayed from the dust-removal spray nozzle 8 from reaching, as a mist, the collectors 10 and the absorption part A thereabove, is disposed between the dust-removal
Spray nozzle 8 and collectors 10.
By using, as the flow-control member 22, a porous plate [a perspective view of Fig. 2(a), a sectional view of Fig. 2(b)], a configuration in which multiple fillers (Raschig rings) are stacked, or a slit plate in which multiple t ' plates having a vertical plane are disposed in parallel - [Fig. 2(d)] as shown in Fig. 2, the sprayed seawater = spreading out from the desulfurization spray nozzle 9 can =o be flowed vertically downward. The flow-controlled sprayed eo seawater can be reliably collected by the collectors 10. If o the porous plate is used as the flow-control member 22, the o sprayed seawater flows only vertically downward, because ~ vertical protrusions form tubes on the lower side of the - holes, as shown in a sectional view of Fig. 2(b).
Fig. 3 is a longitudinal sectional view of upward-open gutter collectors 10 in which collectors are arranged in a staggered manner in two rows. As shown in Fig. 3, the collectors 10 form at least two rows, and collectors 10b in a lower row are arranged in a staggered manner below the gaps between collectors 10a in an upper row. Thus, no gaps are made in a projection drawing of the collectors 10 seen from above.
In the absorption part A of the desulfurization absorption tower 1, the seawater sprayed from the desulfurization spray nozzle 9 is flow-controlled by the flow-control member 22 so that the seawater flows down vertically toward the collectors 10. Thus, the flow-down area of the seawater is limited. As a result, all the seawater flowing down in the absorption part A can be collected by the collectors 10.
' . po
As seen above, the fresh seawater sprayed from the = fot desulfurization spray nozzle 9 absorbs sulfur oxides in the = exhaust gas and then flows down through all the collectors Ea into the oxidation tank 14 disposed outside the o absorption tower. Accordingly, the seawater sprayed in the = absorption part A does not flow down into the dust-removal - part B. & bi 10 Further, since the amount of the seawater sprayed in the absorption part A is larger than that of the seawater sprayed in the dust-removal part B, the sulfur oxides in the exhaust gas can be sufficiently absorbed and removed.
As seen above, although a large amount of seawater is sprayed in the absorption part A, all the seawater flows down into the oxidation tank 14, oxidized in the oxidation tank 14, and then released into the sea 12 (may be called “once-through”). The seawater sprayed in the absorption part A is collected by the flow-control member 22 and collectors 10 and therefore does not flow down into the dust-removal part B.
On the other hand, in the dust-removal part B, the seawater stored in the circulation tank 5 is repeatedly sprayed from the dust-removal spray nozzle 8. Thus, the dust and heavy metals in the exhaust gas can be absorbed or catalytically removed by the sprayed seawater. The seawater a po repeatedly sprayed from the dust-removal spray nozzle 8 is — significantly contaminated by dust or the like compared to ~ the seawater sprayed from the desulfurization spray nozzle © 9 in the absorption part A. For this reason, the oe contaminated seawater is purified in the waste water = treatment tank 24 and then released through a water pipe L8 = and the oxidation tank 14 into the sea 12. i
If the mist in the seawater repeatedly sprayed from the wo dust-removal spray nozzle 8 rises into the absorption part
A, the dust, heavy metals, and the like in the mist would be released into the sea 12 through the collectors 10. This can result in marine pollution and therefore must be avoided.
For this reason, the second mist eliminator 23 for eliminating the mist is disposed above the dust-removal spray nozzle 8 and below the collectors 10.
Since a large amount of seawater is sprayed from the desulfurization spray nozzle 9 in the absorption part A, sulfur oxides in the exhaust gas can be sufficiently absorbed and removed. Although a large amount of seawater is sprayed from the desulfurization spray nozzle 9 in the absorption part A, all the seawater flows down into the oxidation tank 14, oxidized therein, and then released into the sea 12. The seawater sprayed in the absorption part A is collected by the flow-control member 22 and collectors 10 and therefore does not flow down into the dust-removal part
GGG
5. = po
LL
The sprayed seawater collected by the collectors 10 is = fed into the oxidation tank 14. The sulfite ion-containing - seawater in the oxidation tank 14 is diluted with dilution i. seawater fed through the dilution seawater pipe L3, oxidized - by oxygen contained in bubbles jetted by the air diffusion - nozzle 17 based on air fed by the oxidation air blower 16, © and returned to the sea 12 as treated seawater. .
Part of the seawater in the oxidation tank 14 is added, as fresh seawater, to the circulation tank 5 through the water pipe L7 branched from the seawater pipe for absorption liquid L2 and provided with an on-off valve 26.
In the present embodiment, the ratio of the supply amount of seawater in the circulation tank 5 sprayed from the dust-removal spray nozzle 8 with respect to the amount of exhaust gas per unit time and the supply amount of fresh seawater sprayed from the desulfurization spray nozzle 9 with respect to the amount of exhaust gas per unit time is set to 1 to 4:5 to 17. That is, the amount of the fresh seawater sprayed from the desulfurization spray nozzle 9 with respect to the amount of exhaust gas per unit time is set to about 1.2 times or larger than the amount of the circulated seawater sprayed from the dust-removal spray nozzle 8 with respect to the amount of exhaust gas per unit time. Consequently, the amount of the sulfur oxides in the
, SE
Fig. 4 is a system diagram of a wet flue-gas = desulfurization device using seawater of the prior art. A - wet flue-gas desulfurization device similar to the wet flue- - gas desulfurization device using seawater shown in Fig. 4 is = disclosed, for example, in Japanese Unexamined Patent -
Application Publication No. 2010-234334 (Patent Literature - 1). -
This wet desulfurization device includes a = desulfurization absorption tower 100 that mainly treats sulfur oxides (SOx) in a flue gas from a boiler, an inlet duct 102 through which an exhaust gas is introduced into the desulfurization absorption tower 100, an outlet duct 103 through which the exhaust gas SOx-treated in the desulfurization absorption tower 100 is discharged, a desulfurization (seawater) spray nozzle 109 that sprays an absorption liquid (seawater) for absorbing SOx in the exhaust gas into the exhaust gas, a mist eliminator 107 that removes minute droplets (mist) entrained by the flow of the exhaust gas, an oxidation tank 114 in which sulfurous acid produced by absorption of SOx is oxidized, an oxidation air blower 116 that feeds air to be supplied to the oxidation tank 114, an air diffusion nozzle 117 that jets the air fed by the oxidation air blower 116, and the like.
The flue gas discharged from the boiler (not shown) is approximately horizontally introduced through the inlet duct oo | | oo - exhaust gas can fall within the legally acceptable range. -
This is also advantageous in that the amount of seawater = sprayed can be easily set to within the legally acceptable = po range relating to the SO; concentration in accordance with Le the concentration of SO; in the exhaust gas.
A major characteristic of the present embodiment is ~ that the seawater sprayed in the dust-removal part B and the = seawater sprayed in the absorption part A are prevented from being mixed with each other, by the flow-control member 22, collectors 10, and second mist eliminator 23 and can be treated independently. Another characteristic is that the seawater subjected to the exhaust gas purification treatment of the present embodiment is cleaner than that subjected to traditional purification treatment.
Further, although a larger amount of seawater is used in the absorption part A than in the dust-removal part B, the seawater used in the absorption part A does not flow down into the dust-removal part B but rather is collected by the collectors 10. On the other hand, since a relatively small amount of seawater is used in the dust-removal part B, a high load does not occur in purifying such seawater in the waste water treatment tank 24. Further, as the amount of seawater sprayed in the absorption part A becomes larger than the amount of seawater sprayed in the dust-removal part
B, the sulfur oxides in the exhaust gas can be absorbed and removed more sufficiently. = po
LL
As seen above, although a large amount of seawater is - sprayed in the absorption part A, all the seawater flows ne down into the oxidation tank 14, and is oxidized in the i. oxidation tank 14 and then can be released into the sea 12. -
Thus, the seawater sprayed in the absorption part A is - collected by the flow-control member 22 and collectors 10 = and does not flow down into the dust-removal part B. =
Further, potential energy generated when the seawater sprayed from the desulfurization spray nozzle 9 and collected by the collectors 10 is supplied to the oxidation tank 14 is used, through a water turbine 19, as the power source of the pump 4 for pumping the seawater in the circulation tank 5 sprayed by the dust-removal spray nozzle 8. Consequently, there is no need to use electricity as power used for the dust-removal spray nozzle 8, and the cost can be reduced. If the potential energy as well as an electric motor (not shown) 1s used for the water turbine 19, the electric motor is useful, particularly when starting the water turbine 109.
The present invention can be used as a seawater flue- gas desulfurization device that does not release contaminated seawater used in exhaust gas purification ~ treatment to the sea as it is. o =
REFERENCE SIGNS LIST re 3 - 1 desulfurization absorption tower - 2 inlet duct . 3 outlet duct : 4 absorption liquid circulation pump - 5 circulation tank 6 agitator 7 first mist eliminator 8 dust-removal spray nozzle 9 desulfurization spray nozzle 10 collector 11 liquid collecting gutter 12 sea 18 seawater pump 14 oxidation tank 15 micro bubble generator 16 oxidation air blower 17 air diffusion nozzle 19 water turbine 22 flow-control member 23 second mist eliminator 24 waste water treatment tank 26 on-off valve
Ll extraction pipe of absorption liquid -
L2 seawater pipe for absorption liquid
L3 dilution seawater pipe >
L4 sulfite ion-containing seawater pipe -
L5 suction pipe ps
L6 air pipe -
L7 seawater pipe w
L8 water pipe -
A absorption part co
B dust-removal part
( ; o 102 into the desulfurization absorption tower 100 by a desulfurization fan (not shown) and discharged through the ~ outlet duct 103 disposed at the top of the desulfurization = absorption tower 100. -
Seawater heated by a boiler condenser (not shown) is - fed to the most upstream part of the oxidation tank 114 oy through a dilution seawater pipe L3. Part of the seawater o is pumped by a seawater pump 118 and sprayed, as minute = droplets, from the desulfurization spray nozzle 109 through the seawater pipe for absorption liquid L2. Thus, the seawater contacts the exhaust gas, that is, gas-liquid contact occurs. Consequently, dust, hydrogen chloride (HCl), and acid gas, such as hydrogen fluoride (HF), in the exhaust gas, as well as SOx, mostly S0,, in the exhaust gas are selectively absorbed and removed on the absorption droplet surface of the desulfurization spray nozzle 109.
The flow of the exhaust gas entrains a mist of the seawater sprayed from the desulfurization spray nozzle 109 and then the mist is collected by the mist eliminator 107 at the outlet duct 103 in an upper part of the desulfurization absorption tower 100. The exhaust gas that has passed through the mist eliminator 107 is re-heated as necessary and then discharged to the atmosphere through a smokestack {not shown).
( ‘ ’
The seawater which has absorbed S02 in the exhaust gas - and thus become sulfite ion-containing seawater is extracted = from the desulfurization absorption tower 1 and then fed to ~ the oxidation tank 114 through a sulfite ion-containing seawater pipe L4. The sulfite ion-containing seawater is - diluted with dilution seawater fed through a dilution : seawater pipe L3, oxidized by oxygen contained in the air (bubbles) fed by the oxidation air blower 116 and sprayed = from the air diffusion nozzle 117, and returned to the sea - 12 as treated seawater.
This traditional seawater wet desulfurization device is advantageous in that there is no need to provide a limestone supply facility or gypsum recovery facility, unlike in limestone-gypsum process, and that the cost of the desulfurization system can be reduced.
However, the exhaust gas contains sulfur oxides such as
S02, as well as dust or heavy metals such as mercury which have not been sufficiently removed by a dust collector (not shown). Accordingly, they are also absorbed and removed in the absorption tower 100 along with the SO2. As a result, the dust or the like are also discharged to the sea 12 along with the seawater treated in the oxidation tank 114. This can result in marine pollution.
Patent Literature 2 (Japanese Unexamined Patent
Application Publication No. 2001-170444) discloses, in Fig. - 2 thereof, a configuration in which the hollow part of an = absorption tower having, in a lower part thereof, an . absorption liquid storage part storing an absorption liquid - containing limestone is divided into upper and lower stages p- by a collector. The lower stage is used as a lower - absorption part provided with a lower spray nozzle that sprays an absorption liquid containing limestone circulated = and supplied from the absorption liquid storing part into - the exhaust gas, and the upper stage is used as an upper absorption part provided with an upper spray nozzle that sprays seawater. Part of the used seawater which has contacted the exhaust gas in the upper absorption part is collected by the collector and released out of the absorption tower. The used absorption liquid stored in the absorption liquid storing part additionally receives limestone and is sprayed from the lower spray nozzle of the lower absorption part and then used to absorb the exhaust gas.
Patent Literature 3 (Japanese Unexamined Patent
Application Publication No. 2008-200619) discloses a configuration in which when flowing down seawater from an upper part to a lower part of a desulfurization tower and raising an exhaust gas from a lower part to an upper part of an absorption tower to desulfurize the exhaust gas, the drift of the seawater or the blow of the exhaust gas in the
. \ desulfurization tower is suppressed by partitioning the — horizontal sectional area of the desulfurization tower into ~ multiple areas. ©
Japanese Patent Application No. 2012-279808 filed on Dec. o 21, 2012 by the present applicant proposes an exhaust gas = treatment device using seawater shown in Fig. 5. In the om exhaust gas treatment device shown in Fig. 5, a = desulfurization spray nozzle 109 for spraying seawater is ~ disposed in an upper part of a desulfurization absorption tower 100; a partition 141 is disposed in a lower part of the absorption tower 100 and thus an inlet-side gas passage 102 is formed; a dust-removal spray nozzle 108 for spraying seawater in a circulation tank 103 in a lower part of the absorption tower to absorb and remove sulfur oxides and dust in an exhaust gas is disposed in the inlet-side gas passage 102; and a spray nozzle 143 for washing the dust-removal spray nozzle 108 is disposed above the dust-removal spray nozzle 108. Since the partition 141 is disposed in the lower part of the desulfurization absorption tower 100, the exhaust gas passage adjacent to the inlet of the absorption tower is narrow. Thus, the speed of the exhaust gas introduced into the absorption tower 100 is increased. As a result, it is possible to spray a smaller amount of seawater from the dust-removal spray nozzle 108 to improve the dust removal efficiency.
EE ——————————— rr reer
As shown in Fig. 5, a collector 122 is disposed between » the desulfurization spray nozzle 109 and washing spray ~ ; nozzle 143 of the absorption tower 100, and part of the = seawater sprayed from the desulfurization spray nozzle 109 =“ 1s collected by the collector 122 and released to the sea. o>
As shown in Fig. 6, Patent Literature 4 (Japanese =
Unexamined Patent Application Publication No. 61-259730) o discloses a flue-gas desulfurization device which uses not seawater but an absorption liquid containing limestone. An absorption tower 100 is divided into a dust-removal part B in a lower stage and an absorption part A in an upper stage, and a collector 122 for collecting the sprayed absorption liquid is disposed.
The absorption tower has, in a lower part thereof, a dust-removal part circulation tank 103 storing the absorption liquid. The hollow part of the absorption tower is divided into vertical two stages by the collector 122.
The upper stage is used as an absorption tower absorption part A provided with a spray nozzle 121 for spraying the absorption liquid containing limestone into an exhaust gas.
The lower stage is used as an absorption tower dust-removal part B in which the absorption liquid from the circulation tank 103 circulates. The absorption liquid which has contacted the exhaust gas is collected by the collector 122, is recovered in an absorption liquid circulation tank 118
CC
> ‘ from an oxidation air blower 116 and sprayed from a ” diffusion air nozzle 117, and then returned to the sea 12 as - treated seawater. - a
PATENT LITERATURE - bo [Patent Literature 1] Japanese Unexamined Patent ©
Application Publication No. 2010-234334. - [Patent Literature 2] Japanese Unexamined Patent
Application Publication No. 2001-170444. [Patent Literature 3] Japanese Unexamined Patent
Application Publication No. 2008-200619. [Patent Literature 4] Japanese Unexamined Patent
Application Publication No. 61-259730.
The flue-gas desulfurization device disclosed in Patent
Literature 4 (Japanese Unexamined Patent Application
Publication No. 61-259730) does not use seawater but an absorption liquid containing limestone, as shown in Fig. 6.
The absorption tower 100 has, in the lower part thereof, the circulation tank 103 storing an absorption liquid, and the hollow part of the absorption tower 100 is divided into two vertical stages by the collector 122. The upper stage is
Claims (5)
1. A seawater flue-gas desulfurization device. shat Fh I; sprays seawater into an exhaust gas discharged froma combust idly Is i. device including a boiler, and absorbs and removes sul fingides 23s in the exhaust gas, the seawater flue-gas desulfurization = device comprising: . an absorption tower comprising: @ an inlet through which an exhaust as 1s w introduced, a circulation tank disposed below the inlet and configured to store seawater, a dust-removal spray nozzle configured to repeatedly supply seawater in the circulation tank and to absorb or catalytically remove dust and heavy metals in the exhaust gas introduced through the inlet, a desulfurization spray nozzle disposed above the dust-removal spray nozzle and configured to spray only fresh seawater and to absorb and remove sulfur oxides in the exhaust gas introduced through the inlet, and a collector disposed between the dust-removal spray nozzle and the desulfurization spray nozzle and configured to collect the seawater sprayed from the desulfurization spray nozzle; and an oxidation tank configured to introduce the sprayed a ——_—_—_—_———————————————————————— seawater collected by the collector and to supply oxidation ~ air, wherein = a flow-control member for flow-controlling the sprayed ~ seawater 1s disposed between the collector and the - desulfurization spray nozzle, “ a mist eliminator for eliminating a mist is disposed & between the collector and the dust-removal spray nozzle, and = a space in the absorption tower is divided by the flow-contrel member, the collector, and the mist eliminator into an absorption part A provided with the desulfurization spray nozzle and a dust-removal part B disposed below the absorption part A and provided with the dust-removal spray nozzle.
2. The seawater flue-gas desulfurization device according toClaim1l, wherein the flow-control member comprises a porous plate, a plurality of fillers, or a slit plate in which a plurality of plates having a vertical plane are arranged in parallel. .
3. The seawater flue-gas desulfurization device according to Claim 1, wherein the seawater flue-gas desulfurization device uses a pump which uses potential energy when fresh seawater sprayed by the desulfurization spray nozzle
= © and collected by the collector is supplied to the oxidation = tank, as a power source of seawater in the circulation tank ~ sprayed from the dust-removal spray nozzle. ~
4. The seawater flue-gas desulfurization device w according to Claim 1, wherein = the collector comprises collectors at least in two rows, = and collectors in a lower row are arranged in a staggered manner below gaps between collectors in an upper row.
5. A method for operating a seawater flue-gas desulfurization device, wherein, in the seawater flue-gas desulfurization device according to Claim 1, the ratio of the supply amount of seawater in the circulation tank sprayed from the dust-removal spray nozzle with respect to the amount of exhaust gas per unit time and the supply amount of fresh seawater sprayed from the desulfurization spray nozzle with respect to the amount of exhaust gas per unit time is set to 1 to 4:5 to 17.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013064600A JP2014188406A (en) | 2013-03-26 | 2013-03-26 | Sea water flue gas desulfurization equipment and operation method thereof |
| PCT/JP2014/057825 WO2014156985A1 (en) | 2013-03-26 | 2014-03-20 | Seawater flue-gas desulfurization device and method for operating same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PH12015501897A1 PH12015501897A1 (en) | 2016-01-11 |
| PH12015501897B1 true PH12015501897B1 (en) | 2016-01-11 |
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| PH12015501897A PH12015501897B1 (en) | 2013-03-26 | 2015-08-27 | Seawater flue-gas desulfurization device and method for operating same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2014188406A (en) |
| MY (1) | MY173551A (en) |
| PH (1) | PH12015501897B1 (en) |
| SA (1) | SA515361204B1 (en) |
| WO (1) | WO2014156985A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI126920B (en) * | 2013-12-11 | 2017-08-15 | Langh Patents Oy Ab | Exhaust washers and vessels with exhaust washers |
| CN104524916B (en) * | 2015-01-13 | 2016-07-13 | 北京化工大学常州先进材料研究院 | A kind of gas purification dust collection method |
| EP3069781B1 (en) * | 2015-03-20 | 2019-05-08 | General Electric Technology GmbH | System for sulphur removal from a flue gas |
| EP3085911B1 (en) * | 2015-04-22 | 2017-12-13 | Wärtsilä Moss AS | Scrubber with dual water system |
| EP3144051B1 (en) * | 2015-09-15 | 2019-04-17 | General Electric Technology GmbH | Mercury control in a seawater flue gas desulfurization system |
| CN105435590A (en) * | 2015-11-23 | 2016-03-30 | 江苏明轩环保科技有限公司 | Purification system of waste gas purification tower |
| CN105498492A (en) * | 2015-12-06 | 2016-04-20 | 彭斯干 | High-temperature flue gas safe discharge method for ocean platform and cooling and purifying device |
| CN105521676A (en) * | 2016-01-06 | 2016-04-27 | 浙江汇同电源有限公司 | Storage battery recycling dusting spray tower |
| CN106693564A (en) * | 2017-02-28 | 2017-05-24 | 宜兴市压力容器厂有限公司 | Urea dust gas absorbing and purifying system |
| CN107185329A (en) * | 2017-07-24 | 2017-09-22 | 北京国电龙源环保工程有限公司 | A kind of high-effective dust-removing and device for reclaiming moisture |
| CN109806754B (en) * | 2017-11-21 | 2024-02-09 | 国电环境保护研究院有限公司 | Desulfurizing absorption tower device |
| CN111408254A (en) * | 2020-04-14 | 2020-07-14 | 镇江赛尔尼柯自动化有限公司 | Ship exhaust gas washing system and control method |
| FR3112084B1 (en) * | 2020-07-06 | 2022-09-02 | Lab Sa | Installation and process for the wet purification of exhaust fumes from an engine of a marine vessel |
| CN112957904A (en) * | 2021-03-17 | 2021-06-15 | 杨达聪 | Water curtain type dust removal, desulfurization and denitrification device for flue gas of coal-fired boiler |
| CN113069911A (en) * | 2021-03-31 | 2021-07-06 | 徐州博源科技有限公司 | Purification and dust removal control system based on mobile purification and dust removal unit |
| CN113443463A (en) * | 2021-07-08 | 2021-09-28 | 国能龙源环保有限公司 | Atomizing dust suppression device of ship unloader |
| CN114534474B (en) * | 2022-01-12 | 2022-12-27 | 江阴市尚时工程装备有限公司 | High-cleanliness desulfurization and denitrification dust removal device with circulation synergism |
| CN114517723A (en) * | 2022-03-03 | 2022-05-20 | 威海市正大环保设备股份有限公司 | Marine desulfurization, denitrification and dedusting integrated device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6321314Y2 (en) * | 1981-05-26 | 1988-06-13 | ||
| JPS6022921A (en) * | 1983-07-20 | 1985-02-05 | Babcock Hitachi Kk | Wet desulfurizing apparatus of waste gas |
| JPH11290643A (en) * | 1998-04-13 | 1999-10-26 | Fuji Kasui Eng Co Ltd | Removal of acidic component of combustion gas by sea water |
| JP5177859B2 (en) * | 2008-03-25 | 2013-04-10 | 千代田化工建設株式会社 | Desulfurization decarburization equipment |
-
2013
- 2013-03-26 JP JP2013064600A patent/JP2014188406A/en active Pending
-
2014
- 2014-03-20 WO PCT/JP2014/057825 patent/WO2014156985A1/en active Application Filing
- 2014-03-20 MY MYPI2015702720A patent/MY173551A/en unknown
-
2015
- 2015-08-27 PH PH12015501897A patent/PH12015501897B1/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| PH12015501897A1 (en) | 2016-01-11 |
| SA515361204B1 (en) | 2016-08-28 |
| JP2014188406A (en) | 2014-10-06 |
| MY173551A (en) | 2020-02-04 |
| WO2014156985A1 (en) | 2014-10-02 |
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