CN201815246U - Integrated desulfurization and denitrification device for marine exhaust - Google Patents
Integrated desulfurization and denitrification device for marine exhaust Download PDFInfo
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- CN201815246U CN201815246U CN2010205518599U CN201020551859U CN201815246U CN 201815246 U CN201815246 U CN 201815246U CN 2010205518599 U CN2010205518599 U CN 2010205518599U CN 201020551859 U CN201020551859 U CN 201020551859U CN 201815246 U CN201815246 U CN 201815246U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses an integrated desulfurization and denitrification device for marine exhaust, which belongs to the field of air pollution control and marine emission control, and passes exhaust sequentially through a spray humidification cooling region, a discharge oxidization region and a seawater rinsing region to complete integral desulfurization and denitrification. The spray humidification cooling region comprising a small seawater pump, an exhaust humidification cooling pipeline and a nozzle humidifies and cools the exhaust. The discharge oxidization region comprising a plasma generator converts SO2 and NO into sulfuric acid and nitric acid with a great amount of oxidant free radicals. The seawater rinsing region comprising a seawater rinsing tower, stuffing and a large seawater pump converts the sulfuric acid and the nitric acid into sulfate and nitrate, and discharges standard exhaust and rinsing water. The integrated desulfurization and denitrification device in use has the advantages of low energy consumption, small size, low price, avoidance of a seawater quality recovering system as well as raw material storage and transport, capability of discharging products directly into a sea and the like.
Description
Technical field
The utility model relates to a kind of device that is used for the marine vessel exhaust integration desulfurization denitration, refer in particular to a kind of spray humidification cooling, discharge oxidation and three processes of seawer washing are connected and be the marine vessel exhaust integration desulfurization denitration device of one, belong to Air Pollution Control and marine vessel exhaust emission control field.
Background technology
For NO in the marine ship diesel emission tail gas
xAnd SO
xPurification, mainly contain respectively SCR method and seawer washing method at present, but these two kinds of methods all can not integratedly expeditiously remove NO at two kinds of pollutants
xAnd SO
x, so just be difficult to utilize a certain method wherein that ship tail gas is satisfied in the MARPOL73/78 of the International Maritime Organization pact supplemental provisions VI amendment simultaneously respectively to NO fully separately
xAnd SO
xTherefore the limit value requirement of concentration need use two cover systems to carry out desulphurization denitration respectively on boats and ships simultaneously, and this just certainly will greatly increase the cost of ship tail gas desulphurization denitration.
For using same set of system integration to remove NO
xAnd SO
x(Yang Guohua such as Yang Guohua, Hu Wenjia, Zhou Jianghua, Hu Haigang. the desulfurizing and denitrifying process research of ship tail gas ozone oxidation-Absorption by Sea Water. the internal combustion engine journal, 2008,26 (3): propose to realize the integration desulfurization denitration of marine vessel exhaust in conjunction with seawer washing technology 278-282) that this technology utilization ozone oxidation is oxidized to NO with the NO in the tail gas with ozone oxidation
2, in washing absorption tower, utilize seawater spraying then with NO
2And SO
2Be converted into nitrate and contain sulfosalt, thereby finish the committed step of ship tail gas desulphurization denitration.
But the problem that this ozone oxidation also exists three needs to solve in conjunction with seawer washing technology: 1. the required ozone generator power consumption of this technology excessive, bulky, cost an arm and a leg.With the 3000kW marine diesel is example, if the NO discharge capacity is 11g/ (kW.h) in the tail gas, so according to O
3Molal quantity: the principle of NO molal quantity=1: 1, the output that calculates the required ozone generator of oxidation NO should be 52.8kg/h, and the power that present ozone output is the large-scale oxygen source ozone generator of 50kg/h is 400kW, appearance and size is 4900mm * 4000mm * 3000mm, price surpasses 4,000,000, as seen, if adopt this technology, only the power consumption of oxygen source ozone generator just accounts for 13.33% of diesel engine power, if adopt the air source ozone generator, then its power consumption will double, in addition as can be seen, this ozone generator is bulky, cost an arm and a leg.2. this technology also needs an additional seawater quality recovery system of handling the washing waste seawater, and this not only can a large amount of electric energy of additive decrementation, and whole tail gas desulfurization flow process is prolonged.This is because ozone oxidation SO in dry gas stream
2Efficient extremely low, so it in scrubbing tower by in the alkaline matter in the seawater and after, with SO
3 2-Form be present in the washing waste seawater, make it be acid, can not directly enter the ocean, in the aeration tank, mix with seawater stostes in a large number so the washing waste seawater need be delivered to the seawater quality recovery system, in the pond, SO
3 2-The a large amount of air oxygen that blasted change into SO
4 2-, the waste seawater that at last pH value is reached certain standard enters the ocean.
Summary of the invention
The purpose of this utility model is to provide a kind of device that is used for the marine vessel exhaust integration desulfurization denitration, this device does not adopt that power consumption is excessive, bulky, ozone generator costs an arm and a leg, and need not additional water quality recovery system, thereby make this marine vessel exhaust integration desulfurization denitration device practicability more.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of device that is used for the marine vessel exhaust integration desulfurization denitration is composed in series by spray humidification cooling area, discharge zoneofoxidation and three parts in seawer washing district.The temperature that marine diesel is produced is that 200 ℃～490 ℃ tail gas is introduced tail gas humidifying cooling pipeline, utilize a little sea water pump that a small amount of seawater is sucted from the ocean and spray into this pipeline by the nozzle on this duct wall, after high-temperature tail gas and a small amount of contact with sea water heat exchange, seawater becomes vaporous water, the tail gas water content is increased, and the high-temperature tail gas temperature drops to more than 120 ℃ simultaneously; To introduce a plasma generator through the tail gas behind the humidifying cooling then, in this plasma generator, a large amount of vaporous water molecules in the tail gas are produced a large amount of HO by high energy electron bump back
2, oxidative free radical such as OH, these free radicals are through after series reaction, with SO
2Be oxidized to sulfuric acid and nitric acid respectively with NO; Then will be from the bottom that the tail gas that plasma generator flows out is introduced the seawer washing tower, the top of scrubbing tower sprays the seawater that drinks up by a big sea water pump downwards, after contacting in tail gas and the filler of seawater in scrubbing tower, in this process, sulfuric acid and nitric acid are converted into sulfate and nitrate, tail gas after the processing flows to chimney by the outlet of scrubbing tower top after demist, the sulfur-bearing hydrochlorate after the washing and the seawater of nitrate are entered the ocean through the scrubbing tower lower part outlet, thereby finish the marine vessel exhaust integration desulfurization denitration.
Technique effect of the present utility model is as follows:
1. compare with ozone generator, needed plasma device is low in energy consumption, volume is little, low price.Be example still with the 3000kW marine diesel, the discharge reactor general power that is used for this diesel engine vent gas discharge oxidation processes is 40kW, only account for 1.33% of diesel engine power, and its appearance and size is not more than 2000mm * 2000mm * 2000mm, price is no more than 600,000, and as seen these indexs all are significantly less than the index of ozone generator.2. can save the seawater quality recovery system.Because the seawater that sprays in the humidification cooling zone is evaporated to vaporous water by high-temperature tail gas, vaporous water is produced a large amount of HO by the high energy electron bump in plasma generator
2, oxidative free radical such as OH, and these free radicals to have extremely strong be oxidability, through after the series reaction, can be respectively with SO
2Be oxidized to sulfuric acid and nitric acid fast with NO, as seen, because the SO in the tail gas
2Be oxidized to sulfuric acid and nitric acid in advance with NO in free-radical generator, that therefore the seawater after the washing contains in the seawer washing tower itself is exactly SO
4 2-, this has just saved the seawater quality recovery system.
Description of drawings
Fig. 1 is system's composition schematic diagram that the utility model is used for the marine vessel exhaust integration desulfurization denitration.
Label title among Fig. 1: 1, marine diesel; 2, little sea water pump; 3, tail gas humidifying cooling pipeline; 4, nozzle; 5, plasma generator; 6, seawer washing tower; 7, filler; 8, big sea water pump; 9, ocean; 10, seawer washing district; 11, discharge zoneofoxidation; 12, spray humidification cooling area.
The specific embodiment
1 and embodiment is described further as follows to a kind of device to the marine vessel exhaust integration desulfurization denitration of the present utility model in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of device that is used for the marine vessel exhaust integration desulfurization denitration, lower the temperature by spray humidification, discharge oxidation and three steps of seawer washing are composed in series, the system that the device that correspondingly will utilize the utility model to provide carries out synchronous desulfurization and denitrification of marine vessel exhaust is divided into spray humidification cooling area 12, discharge zoneofoxidation 11 and seawer washing district 10, the temperature that marine diesel 1 is produced is that 200 ℃～490 ℃ tail gas is by spray humidification cooling area 12, the order in discharge zoneofoxidation 11 and seawer washing district 10 is passed through successively, thereby finishes the integration desulfurization denitration of tail gas.
Described spray humidification cooling area 12 is made up of a little sea water pump 2, tail gas humidifying cooling pipeline 3 and nozzle 4, marine diesel tail gas is inserted tail gas humidifying cooling pipeline 3, utilize a little sea water pump 2 that a small amount of seawater is sucted from ocean 11 and spray into this pipeline 3 by the nozzle 4 on these pipeline 3 walls, after high-temperature tail gas and a small amount of contact with sea water heat exchange, seawater becomes vaporous water, the tail gas water content is increased, and the high-temperature tail gas temperature drops to more than 120 ℃ simultaneously.
Described discharge zoneofoxidation 11 is made up of plasma generator 5, will introduce plasma generator 5 through the tail gas behind the humidifying cooling, and in plasma generator 5, vaporous water is produced a large amount of HO by the high energy electron bump
2, oxidative free radical such as OH, these free radicals are through after series reaction, respectively with SO
2Be oxidized to sulfuric acid and nitric acid with NO.
Described seawer washing district 10 is by seawer washing tower 6, filler 7, a big sea water pump 8 is formed, to insert the bottom of seawer washing tower 6 from the tail gas that plasma generator 5 flows out, spray the seawater that drinks up by big sea water pump 8 downwards from the top of scrubbing tower 6, tail gas and seawater filler 7 surfaces in scrubbing tower 6 come in contact, in this process, sulfuric acid and nitric acid are converted into sulfate and nitrate, tail gas after the processing is flowed out emptying or is flowed to chimney by the top outlet of scrubbing tower 6 after demist, the sulfur-bearing hydrochlorate after the washing and the seawater of nitrate enter ocean 9 through the lower part outlet of scrubbing tower 6, thereby finish the marine vessel exhaust integration desulfurization denitration.
The marine ship diesel engine power that present embodiment is used is 3000kW, NO in the tail gas before the desulphurization denitration
xConcentration is 11g/ (kW.h), SO
2Concentration is 30kg/h, and exhaust temperature is 200 ℃～490 ℃, and the free-radical generator internal diameter is 2000mm, highly be 2000mm, seawer washing tower internal diameter is 1320mm, is 3500mm highly, and the device that utilizes the utility model to provide carries out ship tail gas integration desulfurization denitration NO afterwards
xConcentration is 1.1g/ (kW.h), SO
2Concentration is 1.3kg/h.
The integration desulfurization denitration system that utilizes the utility model to form has that energy consumption is low, volume is little, low price, need not the seawater quality recovery system, need not the raw material accumulating, product can in line ocean etc. advantage, be applicable to the ship tail gas desulphurization denitration.
Claims (4)
1. device that is used for the marine vessel exhaust integration desulfurization denitration, it is characterized in that, this device is in series by airflow line by three districts that are disposed in order according to spray humidification cooling area, discharge zoneofoxidation and seawer washing district, when the tail gas of marine diesel generation is distinguished by these three that pass through this device successively, finish the integration desulfurization denitration of tail gas.
2. a kind of device that is used for the marine vessel exhaust integration desulfurization denitration according to claim 1 is characterized in that, the spray humidification cooling area is made up of little sea water pump, tail gas humidifying cooling pipeline and three parts of nozzle.
3. a kind of device that is used for the marine vessel exhaust integration desulfurization denitration according to claim 1 is characterized in that, the discharge zoneofoxidation is made up of plasma generator.
4. a kind of device that is used for the marine vessel exhaust integration desulfurization denitration according to claim 1 is characterized in that, the seawer washing district is made up of seawer washing tower, filler, big sea water pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205518599U CN201815246U (en) | 2010-09-30 | 2010-09-30 | Integrated desulfurization and denitrification device for marine exhaust |
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|---|---|---|---|
| CN2010205518599U CN201815246U (en) | 2010-09-30 | 2010-09-30 | Integrated desulfurization and denitrification device for marine exhaust |
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| CN201815246U true CN201815246U (en) | 2011-05-04 |
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| CN2010205518599U Expired - Fee Related CN201815246U (en) | 2010-09-30 | 2010-09-30 | Integrated desulfurization and denitrification device for marine exhaust |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007694A (en) * | 2012-12-27 | 2013-04-03 | 上海海事大学 | Seawater desulfurization device for tail gas of marine diesel engine |
| CN105457474A (en) * | 2015-12-16 | 2016-04-06 | 无锡蓝天电子有限公司 | Marine exhaust axial and radial flow desulfurization tower based on exhaust radial or axial and radial flowing |
| CN105536486A (en) * | 2016-01-08 | 2016-05-04 | 张拿慧 | Ship tail gas denitration technology and system and desulfurization and denitrification integrated technology and system |
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN105833694A (en) * | 2015-01-13 | 2016-08-10 | 袁野 | Electric arc desulfurizer |
| CN107427768A (en) * | 2015-03-04 | 2017-12-01 | 三星重工业株式会社 | Polluter reduces device and method |
| CN108026809A (en) * | 2015-09-10 | 2018-05-11 | 三星重工业株式会社 | Polluter reduces device |
| CN108970349A (en) * | 2018-07-18 | 2018-12-11 | 武汉理工大学 | Boat diesel engine tail gas desulfurization denitrification integrated device and method |
| CN109843714A (en) * | 2017-03-24 | 2019-06-04 | 三菱造船株式会社 | The drainage system of ship desulfurizer |
| CN111408241A (en) * | 2020-04-17 | 2020-07-14 | 大唐环境产业集团股份有限公司 | Integrated desulfurization and denitrification system for ship tail gas |
| CN111408241B (en) * | 2020-04-17 | 2024-06-28 | 大唐环境产业集团股份有限公司 | Boats and ships tail gas integration SOx/NOx control system |
-
2010
- 2010-09-30 CN CN2010205518599U patent/CN201815246U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007694B (en) * | 2012-12-27 | 2014-09-24 | 上海海事大学 | Seawater desulfurization device for tail gas of marine diesel engine |
| CN103007694A (en) * | 2012-12-27 | 2013-04-03 | 上海海事大学 | Seawater desulfurization device for tail gas of marine diesel engine |
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN105833694B (en) * | 2015-01-13 | 2018-11-02 | 沈阳益泰科信息咨询有限公司 | Electric arc devulcanizer |
| CN105833694A (en) * | 2015-01-13 | 2016-08-10 | 袁野 | Electric arc desulfurizer |
| EP3266702A4 (en) * | 2015-03-04 | 2018-11-21 | Samsung Heavy Industries Co., Ltd. | Pollutant reduction device and method |
| CN107427768A (en) * | 2015-03-04 | 2017-12-01 | 三星重工业株式会社 | Polluter reduces device and method |
| CN112973332A (en) * | 2015-03-04 | 2021-06-18 | 三星重工业株式会社 | Contaminant reduction device and method |
| US10618622B2 (en) | 2015-03-04 | 2020-04-14 | Samsung Heavy Industries Co., Ltd. | Pollutant reduction device and method |
| CN108026809A (en) * | 2015-09-10 | 2018-05-11 | 三星重工业株式会社 | Polluter reduces device |
| CN105457474A (en) * | 2015-12-16 | 2016-04-06 | 无锡蓝天电子有限公司 | Marine exhaust axial and radial flow desulfurization tower based on exhaust radial or axial and radial flowing |
| CN105536486B (en) * | 2016-01-08 | 2019-06-11 | 张拿慧 | Ship tail gas denitrating technique and system, desulfurization and denitrification integral process and system |
| CN105536486A (en) * | 2016-01-08 | 2016-05-04 | 张拿慧 | Ship tail gas denitration technology and system and desulfurization and denitrification integrated technology and system |
| CN109843714A (en) * | 2017-03-24 | 2019-06-04 | 三菱造船株式会社 | The drainage system of ship desulfurizer |
| CN108970349A (en) * | 2018-07-18 | 2018-12-11 | 武汉理工大学 | Boat diesel engine tail gas desulfurization denitrification integrated device and method |
| CN111408241A (en) * | 2020-04-17 | 2020-07-14 | 大唐环境产业集团股份有限公司 | Integrated desulfurization and denitrification system for ship tail gas |
| CN111408241B (en) * | 2020-04-17 | 2024-06-28 | 大唐环境产业集团股份有限公司 | Boats and ships tail gas integration SOx/NOx control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20110930 |