CN215027687U - Semi-open type ship exhaust gas cleaning system - Google Patents
Semi-open type ship exhaust gas cleaning system Download PDFInfo
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- CN215027687U CN215027687U CN202120159795.6U CN202120159795U CN215027687U CN 215027687 U CN215027687 U CN 215027687U CN 202120159795 U CN202120159795 U CN 202120159795U CN 215027687 U CN215027687 U CN 215027687U
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Abstract
The utility model discloses a semi-open boats and ships exhaust-gas cleaning system, this system mainly includes four units: a seawater supply unit, a neutralization reaction unit, a wastewater discharge unit and an alkali liquor supply unit. The utility model discloses increased alkali lye supply unit on open system's basis, when the boats and ships navigation is gone into the sea mouth etc. in the river or the river and can't satisfy the regional of boats and ships exhaust-gas cleaning demand, also can make the emission of boats and ships can reach IMO's emission requirement. Compared with an open system which can only control the sulfur content to be 0.5 percent, the system uses the SO in the alkali liquor and the waste gasXAnd the reaction can achieve better desulfurization effect and make up for the defects of an open system. The utility model discloses the method is simple, and simple to operate reforms transform easily the realization on wide application's open system, consequently, the utility model discloses practical application is worth highly, and it is big to promote the meaning.
Description
Technical Field
The utility model belongs to the technical field of boats and ships, concretely relates to semi-open boats and ships exhaust gas cleaning system.
Background
Heavy oil is often used as a fuel in ocean vessels, but heavy oil contains a high sulfur component, and exhaust gas generated after combustion contains a large amount of Sulfur Oxides (SO)X) In order to deal with the problem, International Maritime Organization (IMO) puts higher requirements on the emission of ships, and the content of sulfur in the ship exhaust gas emission is regulated to be less than 0.5 percent in the global range.
In the face of increasingly strict ship sulfur emission standards, shippers take measures to treat exhaust gas discharged by ships at various times, wherein low-sulfur oil is selected as a basic measure for solving the ship sulfur emission from the source, but the low-sulfur oil is expensive and much higher than heavy oil in price, so that the operating cost of the ships is greatly increased, so that the combustion of the low-sulfur oil is not a desulfurization mode most popular with the shippers, and the post-treatment of the flue gas discharged by a ship power device, namely a desulfurizing tower Exhaust Gas Cleaning System (EGCS) is installed on the ships, so that the method is an economical and feasible mode at present and is most advocated by the shippers.
EGCS is divided into open systems, closed systems and hybrid systems. Although the closed system and the hybrid system have good desulfurization effect, the two systems are troublesome to install on the ship and occupy more space of the ship.
The open system adopts seawater as washing water, and the washing effect is equivalent to fuel oil with 0.5 percent of sulfur content. The seawater is weakly alkaline and can neutralize SO in the waste gasX. The seawater can be supplied to the washing tower directly from the sea, and leaves the washing tower after washingThe seawater from the scrubbing tower is discharged into the ocean without any treatment. More importantly, the ship sails in the sea, the seawater is convenient to take and use by using the open system, and the system is very suitable for desulfurizing the tail gas of the ship. However, when the ship sails to a special area, such as a river or a river enters a sea mouth, sulfur oxides in the exhaust gas cannot be neutralized due to insufficient outboard water alkalinity, and at the moment, the open system is not suitable for the desulfurization of the tail gas of the ship, so that how to realize the tail gas desulfurization when the ship sails in the special area at a lower cost becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective is to the problem mentioned above, provides a semi-open boats and ships exhaust-gas cleaning system.
The system mainly comprises four units: a seawater supply unit, a neutralization reaction unit, a wastewater discharge unit and an alkali liquor supply unit.
Wherein, the sea water supply unit mainly includes: valve box, sea water pump, scrubber inlet.
The neutralization reaction unit mainly comprises: and (5) washing the tower.
The wastewater discharge unit mainly includes: a waste water collecting port, a buffer tank and a waste water outlet.
The alkali liquor supply unit mainly comprises: mixing tank, flow control valve, lye tank, lye supply pump.
Wherein, the valve box is connected with the inlet of the washing tower through a pipeline, and a seawater pump is arranged between the valve box and the washing tower.
And a spraying device is arranged at the inlet of the washing tower.
The waste water collecting port is positioned at the bottom of the washing tower and is connected with the buffer tank through a pipeline, and the buffer tank can be directly communicated with the outboard through seawater.
The buffer tank is also communicated with the mixing tank through a pipeline.
Wherein, the lye tank is communicated with the mixing tank, and the flow control valve is arranged between the lye tank and the mixing tank, and can control the flow of the lye according to the PH value in the buffer tank.
The mixing tank is connected with a pipeline between the seawater pump and the inlet of the washing tower through a pipeline, and an alkali liquor supply pump is arranged on the pipeline.
The lye tank is positioned above the mixing tank, and lye can enter the mixing tank under the action of gravity.
When boats and ships navigation is in the ocean area, and the basicity in the sea water is great and can satisfy the requirement of EGCS washing waste gas, above-mentioned alkali lye supply unit closes, and blending tank, flow control valve, alkali lye jar, alkali lye supply pump are closed promptly, at this moment, the utility model provides a semi-open boats and ships exhaust gas cleaning system just is equivalent to open system.
When the ship sails in a special area, such as a river or an entrance of the river into the sea, the alkalinity of the water is not enough to maintain the requirement that the sulfur content of the ship exhaust gas is not higher than 0.5%, and at the moment, the alkali liquor supply unit operates.
Water around the ship enters the washing tower from the valve box through the inlet of the washing tower under the suction action of the seawater pump, the sucked water is sprayed into mist in the washing tower, the mist water flows from top to bottom, and meanwhile, waste gas discharged by the ship enters the washing tower from bottom to top through the pipeline and reacts with the mist water from top to bottom. The washed waste gas is discharged into the atmosphere, the water after reaction becomes waste water, the waste water enters a waste water collecting port at the lower part of the washing tower and then enters a buffer tank, then a small part of the waste water is discharged out of the ship through a waste water outlet, most of the waste water enters a mixing tank, and at the moment, a flow control valve controls the flow of alkaline liquor entering the mixing tank from an alkaline liquor tank according to the PH value of the buffer tank so as to ensure that the mixed solution participating in washing has proper alkalinity. And then, the mixed alkaline solution in the mixing tank and the seawater sucked from the valve box enter the washing tower through the inlet of the washing tower under the suction action of the alkaline solution supply pump, and are sprayed into a mist in the washing tower to react with the waste gas entering the washing tower, so that circulation is performed.
The utility model has the advantages that:
1. the utility model discloses can solve when boats and ships navigation is not enough to absorb the region of sulfur oxide in tail gas at outboard water alkalinity, neither must install complicated closed system and hybrid systemThe SO in the ship exhaust gas can be realized without burning expensive low-sulfur oilXThe discharge amount of the system meets the IMO requirement, so the system is applied to a wider area.
2. The utility model uses alkali liquor to be used together with SO in the waste gasXCompared with an open system which can only control the sulfur content to be 0.5%, the system can control the sulfur content in the waste gas to be far lower than 0.5%, and can achieve a better desulfurization effect.
3. The utility model discloses the method is simple, has increased alkali lye supply unit on open system's basis, simple to operate easily realizes, can compensate open system's not enough, and practical application is worth highly, and it is big to promote the meaning.
Drawings
Fig. 1 is a system diagram of the utility model;
1. a valve box; 2. a sea water pump; 3. an inlet of a washing tower; 4. a washing tower; 5. a waste water collection port; 6. a buffer tank; 7. a mixing tank; 8. a flow control valve; 9. an alkali liquor tank; 10. an alkali liquid supply pump; 11. and a waste water outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The system mainly comprises four units: a seawater supply unit, a neutralization reaction unit, a wastewater discharge unit and an alkali liquor supply unit.
As shown in fig. 1, the seawater supply unit mainly includes: valve box 1, sea water pump 2, scrubbing tower entry 3.
The neutralization reaction unit mainly comprises: the column 4 is washed.
The wastewater discharge unit mainly includes: a waste water collecting port 5, a buffer tank 6 and a waste water outlet 11.
The alkali liquor supply unit mainly comprises: a mixing tank 7, a flow control valve 8, an alkali liquor tank 9 and an alkali liquor supply pump 10.
Wherein, the valve box 1 is connected with the inlet 3 of the washing tower through a pipeline, and a seawater pump 2 is arranged between the valve box and the inlet 3 of the washing tower.
And a spraying device is arranged at the inlet 3 of the washing tower.
The waste water collecting port 5 is positioned at the bottom of the washing tower 4 and is connected with the buffer tank 6 through a pipeline, and the buffer tank 6 can be directly communicated with the outboard waste water outlet 11 through a pipeline.
The buffer tank 6 is also communicated with the mixing tank 7 through a pipeline.
Wherein, the lye tank 9 is communicated with the mixing tank 7, the flow control valve 8 is arranged between the two, and the flow of the lye can be controlled according to the PH value in the buffer tank 6. When the PH value of the solution in the buffer tank 6 is lower, the flow of the alkaline solution entering the mixing tank 7 can be controlled to increase through the signal of the flow control valve 8, and when the PH value of the solution in the buffer tank 6 is higher, the flow of the alkaline solution entering the mixing tank 7 can be controlled to decrease, so that a better desulfurization effect can be achieved.
The mixing tank 7 is connected with a pipeline between the seawater pump 2 and the washing tower inlet 3 through a pipeline, and an alkali liquor supply pump 10 is arranged on the pipeline.
The lye tank 9 is arranged above the mixing tank 7 and is higher than the mixing tank 7, and lye can enter the mixing tank 7 under the action of gravity.
When boats and ships navigation is in the ocean area, and the basicity in the sea water is great, when can satisfying EGCS washing waste gas's requirement, above-mentioned alkali lye supply unit closes, at this moment, the utility model discloses a semi-open boats and ships exhaust gas cleaning system who provides just is equivalent to open system. Seawater enters a washing tower 4 from a valve box 1 through a washing tower inlet 3 under the suction action of a seawater pump 2, the seawater is sprayed into mist in the washing tower 4, the mist seawater flows from top to bottom, and meanwhile, exhaust gas discharged by a ship enters the washing tower 4 from bottom to top through a pipeline and reacts with the mist seawater from top to bottom. The washed waste gas is discharged into the atmosphere, the reacted seawater is changed into wastewater which enters a wastewater collecting port 5 at the lower part of a washing tower 4, and then all the wastewater is discharged out of the ship through a buffer tank 6 and a wastewater outlet 11 in sequence.
When the ship sails in a special sea area, such as a river or an area such as a river entrance, the alkalinity of the water is not enough to maintain the requirement that the sulfur content of the ship exhaust gas is not higher than 0.5%, and at the moment, the alkali liquor supply unit operates.
Water around the ship enters a washing tower 4 from a valve box 1 through a washing tower inlet 3 under the suction action of a sea water pump 2, the sucked water is sprayed into mist in the washing tower 4, the mist water flows from top to bottom, and meanwhile, waste gas discharged by the ship enters the washing tower 4 from bottom to top through a pipeline and reacts with the mist water from top to bottom. The washed waste gas is discharged into the atmosphere, the water after reaction becomes waste water, the waste water enters the waste water collecting port 5 at the lower part of the washing tower 4 and then enters the buffer tank 6, a small part of the waste water is discharged out of the ship through the waste water outlet 11, most of the waste water enters the mixing tank 7, and at the moment, the flow control valve 8 controls the flow of the alkaline liquor entering the mixing tank 7 from the alkaline liquor tank 9 according to the PH value of the buffer tank 6. Then, the mixed solution in the mixing tank 7 is pumped by the alkaline solution feed pump 10, and together with the outboard water sucked from the valve box 1, enters the scrubber 4 through the scrubber inlet 3, is sprayed in a mist form in the scrubber 4, reacts with the exhaust gas entering the scrubber 4, and is thus circulated.
Compare all water in the closed system and all participate in the circulation, and open system in all waste water all discharge extraship, the utility model discloses water in the system is partly participated in the circulation, and partly discharge extraship, consequently, this system is called a semi-open boats and ships exhaust gas cleaning system, and most participation circulation, and the loss amount of alkali lye also can be reduced to the extraship of small part discharge.
The foregoing is merely a preferred embodiment of the present invention, and the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (4)
1. The utility model provides a semi-open boats and ships exhaust-gas cleaning system which characterized in that: the system comprises four units, namely a seawater supply unit, a neutralization reaction unit, a wastewater discharge unit and an alkali liquor supply unit, wherein the seawater supply unit comprises: the device comprises a valve box (1), a seawater pump (2) and a washing tower inlet (3);
the neutralization reaction unit comprises: a washing tower (4);
the wastewater discharge unit includes: a waste water collecting port (5), a buffer tank (6) and a waste water outlet (11);
the lye supply unit comprises: a mixing tank (7), a flow control valve (8), an alkaline solution tank (9) and an alkaline solution supply pump (10);
the lye tank (9) is communicated with the mixing tank (7) through a pipeline, the flow control valve (8) is arranged between the lye tank and the mixing tank, and the buffer tank (6) is also communicated with the mixing tank (7) through a pipeline.
2. A semi-open marine exhaust gas cleaning system according to claim 1, wherein: the lye tank (9) is communicated with the buffer tank (6), and the flow control valve (8) is arranged between the two.
3. A semi-open marine exhaust gas cleaning system according to claim 1, wherein: the alkali liquor tank (9) is arranged above the mixing tank (7).
4. A semi-open marine exhaust gas cleaning system according to claim 1, wherein: the mixing tank (7) is connected with a pipeline between the seawater pump (2) and the inlet (3) of the washing tower through a pipeline, and an alkaline solution supply pump (10) is arranged on the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120159795.6U CN215027687U (en) | 2021-01-21 | 2021-01-21 | Semi-open type ship exhaust gas cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120159795.6U CN215027687U (en) | 2021-01-21 | 2021-01-21 | Semi-open type ship exhaust gas cleaning system |
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| Publication Number | Publication Date |
|---|---|
| CN215027687U true CN215027687U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120159795.6U Active CN215027687U (en) | 2021-01-21 | 2021-01-21 | Semi-open type ship exhaust gas cleaning system |
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| CN (1) | CN215027687U (en) |
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2021
- 2021-01-21 CN CN202120159795.6U patent/CN215027687U/en active Active
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