CN103638794A - Desulfurization packed tower of marine diesel engine - Google Patents
Desulfurization packed tower of marine diesel engine Download PDFInfo
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- CN103638794A CN103638794A CN201310692439.0A CN201310692439A CN103638794A CN 103638794 A CN103638794 A CN 103638794A CN 201310692439 A CN201310692439 A CN 201310692439A CN 103638794 A CN103638794 A CN 103638794A
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- spray
- packed tower
- air intake
- intake duct
- cleaning solution
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- Gas Separation By Absorption (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention aims at providing a desulfurization packed tower of a marine diesel engine. The desulfurization packed tower comprises a packed tower body, wherein a waste gas outlet is formed in the upper part of the packed tower body, a waste liquid outlet is formed in the lower part of the packed tower body, a gas inlet passage connector is arranged at the lower end of the side wall of the packed tower body and is connected with a gas inlet passage, the gas inlet passage is arranged in a downwards-inclining manner, a cleaning solution pre-spraying device is arranged in the gas inlet passage and is positioned on one side of the inner wall above the gas inlet passage, the spraying direction of the cleaning solution pre-spraying device is a circulating direction of flue gas in a flue, a spraying catalytic apparatus is arranged at the position above the gas inlet passage connector in the packed tower body and comprises a high-temperature spraying system arranged upside and a packing layer arranged underside, and a demister and a cleaning system are sequentially arranged above the spraying catalytic apparatus. The desulfurization packed tower effectively reduces waste gas circulating resistance and improves SOx gas absorptivity to be up to more than 98%.
Description
Technical field
What the present invention relates to is a kind of diesel emission device, specifically boat diesel engine tapping equipment.
Background technology
Along with the prosperity day by day of maritime industry, the waste gas that marine diesel burning produces is also more and more serious to the harm of environment, and SOx is wherein larger to environmental hazard composition.The SOx of boats and ships discharge derives from the contained sulphur of fuel oil.For this reason, the IMO of International Maritime Organization has carried out strict restriction to marine fuel oil sulfur content.Current sulfur method has many, is mainly divided into desulfurization and the rear desulfurization of burning in the front desulfurization of burning, burning, wherein economic and practical with sulfur method after burning.Waste gas washing desulphurization packed tower is a kind of the most frequently used method of desulfurization after burning.Packed tower as a kind of mass transfer apparatus have that efficiency is high, pressure drop is low, liquid holdup is little, simple structure, installation easily, the advantage such as small investment is widely used in absorption and separation operation.In recent years, packed tower has been carried out to a large amount of research, obtained breakthrough.The structured packing maximum gauge of application can reach 14～20m at present, has broken through the traditional concept that in the past only limits to trourelle.Therefore, packed tower can be used for boat diesel engine waste gas washing desulphurization closed cycle.
The mean temperature of two-stroke boat diesel engine waste gas is 280 ℃ of left and right, and after waste heat boiler, EGT generally can drop to 180 ℃.Research shows, the desulfuration efficiency of packed tower desulfur technology reduces along with the rising of entrance EGT, temperature during higher than 197 ℃ desulfuration efficiency be zero.And between 25 ℃～100 ℃, desulfuration efficiency can reach more than 98%.SO in waste gas after shiphoard machinery system burning
2account for 95% of SOx, SO
3content only account for 5%, and SO
3solubility much larger than SO
2, and SOx reacts the rear SO generating with the absorption liquid in desulfurization packed tower
4 2-compare SO
3 2-stable.Therefore, to entering waste gas before packed tower, carry out cleaning solution and spray in advance and reduce its temperature, and with by the SO in waste gas
2be catalytically converted into SO
3, can effectively improve the absorption efficiency of desulfurization packed tower.
The pre-spray equipment of a kind of washing desulphurization packed tower air intake duct has been proposed in the pretreatment unit > > of the patent < < seawater desulfurization device that is 201110177092.7 at application number, this desulfurization packed tower air intake duct adopts vertical design, and pre-spray equipment is installed on the vertical component of air intake duct.Although described pre-spray equipment can wash waste gas, due to the vertical design of packed tower gas flue, greatly increased the resistance of waste gas.
In the catalyst filling of a patent < < seawater desulfurizing process that is 201010137474.2 at application number and packed bed > > thereof, having proposed a kind of catalyst filling consists of three layers of honeycomb circulus, comprise intermediate layer honeycomb ring, upper epidermis honeycomb ring and lower top layer honeycomb ring.Described catalyst filling has only provided the structure of filler in washing desulphurization packed tower, do not point out which kind of catalyst of top layer, and the core of catalyst filling is catalyst.
Summary of the invention
The object of the present invention is to provide and can make the absorptivity of SOx reach more than 98%, and can remove particle and the greasy dirt in boat diesel engine waste gas simultaneously, effectively solve the marine diesel desulfurization packed tower of packed tower device blockage.
The object of the present invention is achieved like this:
Marine diesel desulfurization packed tower of the present invention, it is characterized in that: comprise filler tower body, the top of filler tower body arranges waste gas outlet, the below of filler tower body arranges waste liquid outlet, the bottom of packed tower body sidewall arranges air intake duct interface, air intake duct interface is connected with air intake duct, air intake duct adopts downward-sloping mode to arrange, the pre-spray equipment of cleaning solution is installed in air intake duct, the pre-spray equipment of cleaning solution is positioned at air intake duct upper inner wall one side, the spray direction of the pre-spray equipment of cleaning solution is the direction of flue gas circulation in flue, spray catalytic unit is installed in the position that is positioned at air intake duct interface top in filler tower body, described spray catalytic unit comprises the packing layer that is positioned at the high temperature spray system of top and is positioned at below, the top of spray catalytic unit is installed demister and purging system successively.
The present invention can also comprise:
1, described packing layer area load has CrO
3-SnO
2catalyst.
2, described spray catalytic unit comprises two groups, and two groups of spray catalytic units are arranged in order from top to bottom, and the packing layer of every group of spray catalytic unit respectively supports screen by one and is fixed on air intake duct inwall.
3, the pre-spray equipment of described cleaning solution adopts spray nozzle type liquid spray thrower, and the cleaning solution of sprinkling is the alkaline solution of 25 ℃～50 ℃ of temperature.
Advantage of the present invention is: the pre-spray equipment of cleaning solution of the present invention can make boat diesel engine EGT be cooled to 60～70 ℃, and the SOx GAS ABSORPTION rate of desulfurization packed tower is increased to more than 98%.Except having, reduce EGT and increase the effect of SOx absorption efficiency in waste gas, at air intake duct, setting up the pre-spray equipment of cleaning solution and also can wash waste gas, removing the part particle in waste gas, in order to avoid these particles enter occluding device in packed tower.Packing layer at desulfurization packed tower is used area load to have CrO
3-SnO
2the filler of catalyst can be by the SO in waste gas
2catalytic Oxygen changes into SO
3gas, has effectively avoided SO
2the SO generating after gas reacts with alkaline detergent solution
3 2-unsettled shortcoming.The present invention can increase packed tower desulfuration efficiency, reduce energy consumption and the equipment that prevents stops up.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail:
In conjunction with Fig. 1, the present invention includes air intake duct 1, the pre-spray equipment 2 of cleaning solution, support screen 3, packing layer 4, high temperature spray system 5, demister 6, purging system 7, waste gas outlet 8, waste liquid outlet 9, filler tower body 10, in the air intake duct 1 of packed tower 10, set up the pre-spray equipment 2 of cleaning solution, the air intake duct 1 of packed tower 10 adopts downward-sloping layout.The pre-spray equipment 2 of cleaning solution adopts spray nozzle type liquid spray thrower.Spray nozzle type liquid spray thrower is arranged on the upper end of air intake duct, and the air intake duct 1 of packed tower 10 is taked downward-sloping setting.The spray direction of spray nozzle type liquid spray thrower is along flue direction, and after the cleaning solution of spray fully contacts with waste gas from top to bottom, waste liquid flows in the waste liquid pool of packed tower 10 bottoms.In spray nozzle type liquid spray thrower, the absorption liquid temperature of spray is the alkaline solution of 25 ℃～50 ℃.The pre-spray equipment 2 of the cleaning solution of waste gas through gas inlet road 1, after the alkaline solution wash cooling by device 2 sprays, temperature can be down to 60～75 ℃, can absorb a part of SO in waste gas simultaneously
2gas and remove part particle object and the greasy dirt in waste gas.Packing layer 4 at packed tower 10 is used area load to have CrO
3-SnO
2the filler of catalyst.Area load has CrO
3-SnO
2the filler of catalyst can be by the SO in waste gas
2gas catalysis changes into SO
3gas.
Claims (5)
1. marine diesel desulfurization packed tower, it is characterized in that: comprise filler tower body, the top of filler tower body arranges waste gas outlet, the below of filler tower body arranges waste liquid outlet, the bottom of packed tower body sidewall arranges air intake duct interface, air intake duct interface is connected with air intake duct, air intake duct adopts downward-sloping mode to arrange, the pre-spray equipment of cleaning solution is installed in air intake duct, the pre-spray equipment of cleaning solution is positioned at air intake duct upper inner wall one side, the spray direction of the pre-spray equipment of cleaning solution is the direction of flue gas circulation in flue, spray catalytic unit is installed in the position that is positioned at air intake duct interface top in filler tower body, described spray catalytic unit comprises the packing layer that is positioned at the high temperature spray system of top and is positioned at below, the top of spray catalytic unit is installed demister and purging system successively.
2. marine diesel desulfurization packed tower according to claim 1, is characterized in that: described packing layer area load has CrO
3-SnO
2catalyst.
3. marine diesel desulfurization packed tower according to claim 1 and 2, it is characterized in that: described spray catalytic unit comprises two groups, two groups of spray catalytic units are arranged in order from top to bottom, and the packing layer of every group of spray catalytic unit respectively supports screen by one and is fixed on air intake duct inwall.
4. marine diesel desulfurization packed tower according to claim 1 and 2, is characterized in that: the pre-spray equipment of described cleaning solution adopts spray nozzle type liquid spray thrower, and the cleaning solution of sprinkling is the alkaline solution of 25 ℃～50 ℃ of temperature.
5. marine diesel desulfurization packed tower according to claim 3, is characterized in that: the pre-spray equipment of described cleaning solution adopts spray nozzle type liquid spray thrower, and the cleaning solution of sprinkling is the alkaline solution of 25 ℃～50 ℃ of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692439.0A CN103638794B (en) | 2013-12-17 | 2013-12-17 | Marine diesel desulfurization packed tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692439.0A CN103638794B (en) | 2013-12-17 | 2013-12-17 | Marine diesel desulfurization packed tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103638794A true CN103638794A (en) | 2014-03-19 |
| CN103638794B CN103638794B (en) | 2016-08-17 |
Family
ID=50244162
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310692439.0A Active CN103638794B (en) | 2013-12-17 | 2013-12-17 | Marine diesel desulfurization packed tower |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894053A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Double-loop desulfurization device for ship |
| CN104353357A (en) * | 2014-10-22 | 2015-02-18 | 哈尔滨工程大学 | Integrated exhaust gas scrubbing desulfuration equipment for ship power device and control method |
| CN104941421A (en) * | 2014-03-28 | 2015-09-30 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | Internal combustion engine, and method of removing sulphur oxides from exhaust gas |
| CN105251360A (en) * | 2015-10-28 | 2016-01-20 | 苏州仕净环保科技股份有限公司 | Diesel engine flue gas desulfurization and denitrification twin tower |
| CN107174938A (en) * | 2017-07-11 | 2017-09-19 | 山东海新石油化工有限公司 | A kind of desulfurizing tower |
| CN107511047A (en) * | 2017-09-06 | 2017-12-26 | 哈尔滨工程大学 | A kind of marine diesel in-line arrangement exhaust gas scrubber |
| CN107905875A (en) * | 2017-12-18 | 2018-04-13 | 北京联飞翔科技股份有限公司 | A kind of purification of nitrogen oxides device and method |
| CN109966880A (en) * | 2019-04-09 | 2019-07-05 | 江苏科技大学 | A kind of tilt self-adaptive sieve plate seawater desulfurization tower |
| CN112403204A (en) * | 2019-08-22 | 2021-02-26 | 中国船舶重工集团公司第七一一研究所 | Compact marine I type scrubbing tower |
| CN112439315A (en) * | 2019-09-05 | 2021-03-05 | 大连海事大学 | Integrated purification system for complex flue gas |
| CN113304608A (en) * | 2021-03-16 | 2021-08-27 | 无锡市华星电力环保工程有限公司 | Flue gas treatment and denitration catalyst thermal desorption integrated device and use method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103894053B (en) * | 2014-03-27 | 2015-10-28 | 哈尔滨工程大学 | A kind of double loop desulfurizer for boats and ships |
| CN103894053A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Double-loop desulfurization device for ship |
| CN104941421B (en) * | 2014-03-28 | 2020-01-17 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | Internal combustion engine and method for removing sulfur oxides from exhaust gas |
| CN104941421A (en) * | 2014-03-28 | 2015-09-30 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | Internal combustion engine, and method of removing sulphur oxides from exhaust gas |
| CN104353357A (en) * | 2014-10-22 | 2015-02-18 | 哈尔滨工程大学 | Integrated exhaust gas scrubbing desulfuration equipment for ship power device and control method |
| CN105251360A (en) * | 2015-10-28 | 2016-01-20 | 苏州仕净环保科技股份有限公司 | Diesel engine flue gas desulfurization and denitrification twin tower |
| CN107174938A (en) * | 2017-07-11 | 2017-09-19 | 山东海新石油化工有限公司 | A kind of desulfurizing tower |
| CN107511047A (en) * | 2017-09-06 | 2017-12-26 | 哈尔滨工程大学 | A kind of marine diesel in-line arrangement exhaust gas scrubber |
| CN107905875A (en) * | 2017-12-18 | 2018-04-13 | 北京联飞翔科技股份有限公司 | A kind of purification of nitrogen oxides device and method |
| CN109966880A (en) * | 2019-04-09 | 2019-07-05 | 江苏科技大学 | A kind of tilt self-adaptive sieve plate seawater desulfurization tower |
| CN112403204A (en) * | 2019-08-22 | 2021-02-26 | 中国船舶重工集团公司第七一一研究所 | Compact marine I type scrubbing tower |
| CN112439315A (en) * | 2019-09-05 | 2021-03-05 | 大连海事大学 | Integrated purification system for complex flue gas |
| CN113304608A (en) * | 2021-03-16 | 2021-08-27 | 无锡市华星电力环保工程有限公司 | Flue gas treatment and denitration catalyst thermal desorption integrated device and use method |
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