CN218709552U - Acid discharge water treatment system for main engine of roll-on-roll-off ship - Google Patents
Acid discharge water treatment system for main engine of roll-on-roll-off ship Download PDFInfo
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- CN218709552U CN218709552U CN202222706168.7U CN202222706168U CN218709552U CN 218709552 U CN218709552 U CN 218709552U CN 202222706168 U CN202222706168 U CN 202222706168U CN 218709552 U CN218709552 U CN 218709552U
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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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Abstract
The utility model provides a host acid discharge water treatment system of a roll-on-roll-off ship, which comprises a sodium hydroxide cabinet, an acid-base neutralization cabinet and a discharge water tank, wherein the sodium hydroxide cabinet is communicated with the acid-base neutralization cabinet through a first pipeline and a sodium hydroxide dosing pump; the acid-base neutralization cabinet is communicated with the discharge water cabin through a second pipeline and an electromagnetic valve and is connected to the outboard through a third pipeline and an acid-base neutralization cabinet discharge pump; the acid-base neutralization cabinet is connected with a first pH sensor, a first liquid level switch and a second liquid level switch, the first pH sensor is electrically controlled and connected with the sodium hydroxide dosing pump, the first liquid level switch is electrically connected with the electromagnetic valve, and the second liquid level switch is electrically connected with the discharge pump of the acid-base neutralization cabinet; the water tank of bleeding is connected to the outboard through fourth pipeline and water tank of bleeding drainage pump, and the third liquid level switch on the water tank of bleeding is connected with water tank of bleeding drainage pump electric connection. The utility model discloses avoid acid to let out the influence that the water corrodes the hull structure effectively, the automatic start/stop discharge pump offers convenience for the crew operation.
Description
Technical Field
The utility model belongs to the technical field of boats and ships driving system, concretely relates to ro-ro ship host computer acidity water treatment system that releases.
Background
The exhaust gas emitted by the marine diesel engine contains greenhouse gases, and generates greenhouse effect, so that the reduction of the emission of the greenhouse gases is emphasized by various countries and international maritime organizations, and some rules and regulations are established to stipulate various diesel engine manufacturers to improve the technical capacity so as to reduce the emission of the greenhouse gases.
The greenhouse gas that produces in the boats and ships navigation mainly comes from the exhaust emission of host computer, and the host computer factory has developed an intelligent exhaust gas recirculation control system, and the exhaust gas that produces the host computer gets back to the booster burning through closed fresh water cooling system and after handling, and reutilization waste gas reduces greenhouse gas's emission. Waste gas can produce in the fresh water of a certain amount of condensate water discharge to closed fresh water cooling system after the cooling, because the volume of the circulating water tank in the closed fresh water cooling system is certain, in order to guarantee system normal operating, water in the closed fresh water cooling system need be released regularly according to the control of host computer. However, because of SOX and NOX in the exhaust gas, the condensed water produced by the exhaust gas contains acidic media. The acidic medium has certain corrosiveness, and the navigation safety of the ship can be influenced if the acidic main engine discharged water is not properly treated, so that the main engine acidic discharged water treatment method is designed to ensure that the ship normally navigates is necessary.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the utility model provides a processing system that drains of ro-ro ship host computer acidity, under the standard requirement prerequisite that satisfies MARPOL (the international prevention boats and ships cause the pollution convention) and each classification society, solve the influence of sour water to boats and ships corruption to equipment in the system is automatic operation/stop according to control logic through the method of designing some automatic control, reduces crewman's manual operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a main engine acidic discharged water treatment system of a roll-on-roll-off ship comprises a sodium hydroxide cabinet, an acid-base neutralization cabinet and a discharged water cabin, wherein the sodium hydroxide cabinet is communicated with a sodium hydroxide inlet of the acid-base neutralization cabinet through a first pipeline, and a sodium hydroxide dosing pump is arranged on the first pipeline; the acid-base neutralization cabinet is provided with a main machine acid drainage water inlet and two neutral drainage water outlets, one neutral drainage water outlet is communicated with the drainage water cabin through a second pipeline, the other neutral drainage water outlet is connected to the outside of the ship through a third pipeline, the second pipeline is connected with an electromagnetic valve, and the third pipeline is connected with an acid-base neutralization cabinet discharge pump; the acid-base neutralization cabinet is connected with a first pH sensor, a first liquid level switch and a second liquid level switch, the first pH sensor is electrically controlled and connected with a sodium hydroxide dosing pump, the first liquid level switch is electrically controlled and connected with an electromagnetic valve, and the second liquid level switch is electrically controlled and connected with a discharge pump of the acid-base neutralization cabinet; the water outlet of the drainage water tank is connected to the outboard through a fourth pipeline, a drainage water tank discharge pump is connected to the fourth pipeline, the drainage water tank is connected with a third liquid level switch, and the third liquid level switch is electrically controlled and connected with the drainage water tank discharge pump.
Furthermore, the first liquid level switch is positioned at the upper part of the side wall of the acid-base neutralization cabinet, the second liquid level switch is positioned at the lower part of the side wall of the acid-base neutralization cabinet, and the third liquid level switch is positioned at the upper part of the side wall of the drainage water tank.
Furthermore, a fifth liquid level switch is connected to the side wall of the acid-base neutralization cabinet, the fifth liquid level switch is electrically connected with the electromagnetic valve in a control manner, and the height of the fifth liquid level switch is lower than that of the first liquid level switch and is smaller than that of the second liquid level switch.
Furthermore, the outlet end of the third pipeline and the outlet end of the fourth pipeline are both communicated with the inlet of a fifth pipeline, the outlet end of the fifth pipeline is communicated with the inlet of a pneumatic three-way electromagnetic valve, one outlet of the pneumatic three-way electromagnetic valve is connected with a sixth pipeline, the outlet end of the sixth pipeline extends to the side, the other outlet of the starting three-way electromagnetic valve is connected with a first pipeline, and the outlet end of the seventh pipeline is communicated with the drainage water tank; and the fifth pipeline is connected with an oil content detection device, and the oil content detection device is electrically connected with the pneumatic three-way electromagnetic valve in a control manner.
Furthermore, the fourth pipeline is connected with an oil-water separator through a branch pipeline, and a communication point of the branch pipeline and the fourth pipeline is positioned on one side of the discharge water cabin discharge pump close to the discharge water cabin.
Further, a second pH sensor is connected to the branch conduit.
The method for treating the host acidic discharge water by adopting the rolling and loading ship host acidic discharge water treatment system comprises the following steps:
s1, after acid discharged water of a host is discharged to an acid-base neutralization cabinet, a first pH sensor on the acid-base neutralization cabinet detects the pH value of the acid discharged water of the host, if the discharged water is acidic, a signal is output to a sodium hydroxide dosing pump to carry out NaOH dosing until the discharged water in the acid-base neutralization cabinet is neutral, the first pH sensor outputs a signal to the sodium hydroxide dosing pump, and the sodium hydroxide dosing pump is closed;
s2, when the ship sails to a discharge area, the second liquid level switch controls the discharge pump of the acid-base neutralization cabinet to be opened, the oil content monitoring device detects oil content in neutral discharge water, and if the oil content monitoring reaches the standard, the oil content monitoring device outputs a signal to the pneumatic three-way electromagnetic valve to discharge the neutral discharge water to a board; if the oil content monitoring does not reach the standard, the oil content monitoring device outputs a signal to the pneumatic three-way electromagnetic valve to discharge neutral discharge water to the discharge water cabin;
s3, when the ship sails to the emission limiting area, the discharge pump of the acid-base neutralization cabinet stops working in the emission limiting area, when the water level in the acid-base neutralization cabinet triggers the first liquid level switch, the first liquid level switch outputs a signal to the electromagnetic valve, the electromagnetic valve is opened, neutral discharge water in the acid-base neutralization cabinet is discharged to the discharge water cabin 3 to be stored, and when the water level in the acid-base neutralization cabinet is low to trigger the fifth liquid level switch, the electromagnetic valve is automatically closed; when the ship sails away from the emission limiting area, the discharge pump of the water discharge cabin is started to discharge water in the water discharge cabin to the outside of the ship board, the oil content monitoring device detects oil content in neutral discharge water, and if the oil content monitoring reaches the standard, the oil content monitoring device outputs a signal to the pneumatic three-way electromagnetic valve to discharge the neutral discharge water to the ship board; if the oil content monitoring does not reach the standard, the oil content monitoring device outputs a signal to the pneumatic three-way electromagnetic valve to discharge neutral discharge water to the discharge water cabin; in the process, when the liquid level in the water drainage tank triggers the fourth liquid level switch, the fourth liquid level switch sends a signal to the water drainage tank discharge pump, and the water drainage tank discharge pump is automatically closed;
and S4, treating oil content of the neutral drain water with overproof oil content in the drain water cabin in a drain water cabin drain pump oil-water separator.
The utility model discloses a ro-ro ship host computer acid water treatment system that releases, the water tank of releasing belongs to the hull structure cabin because of the cabin capacity is bigger, the material is the ordinary steel sheet of acid corrosion resistance, if the acid water of releasing directly releases can corrode the hull structure to this cabin, influence the safety of boats and ships, consequently designed two independent stainless steel case cabinet sodium hydroxide cabinets and acid-base neutralization cabinet in this system, the acid that produces the host computer is released earlier and is released to acid-base neutralization cabinet in and utilize the sodium hydroxide to carry out neutralization, carry out aftertreatment again. The utility model can effectively avoid the influence of acidic discharge water on the corrosion of the hull structure, ensure the normal navigation of the ship, and automatically start/stop the discharge pump by an automatic control method, thereby bringing convenience to the operation of a crew; through some linkage automatic control of the liquid level switch, the sensor and the electromagnetic valve, manual operation of crews is avoided, and labor time of the crews is saved.
Compared with the prior art, the utility model discloses following beneficial effect has: the acidic discharged water is subjected to neutralization treatment, so that the corrosion of an acidic medium to a hull structure is avoided, and the safety of a ship is influenced; according to the acid value of the discharged water, obtaining NaOH, namely only 30 percent of NaOH solution is needed, so that the use of high-concentration NaOH solution is avoided, and the high-solubility NaOH solution needs to be heated to prevent crystallization and influence use; the equipment of the system is automatically controlled to start and stop in the emission-limiting area and the emission-non-limiting area, so that frequent operation of crews is not needed, and the labor cost of the crews is saved; the treated discharged water can be discharged to the outboard, the discharged water does not need to be stored in a discharged water tank all the time, and the discharged water is recovered by a pump after the ship leans against a wharf, so that extra operation cost is brought to a shipowner; the suction check valve prevents water in the pipeline from flowing back to the cabin after the pump stops, and the self-suction capacity of the pump during starting every time can be guaranteed.
Drawings
Fig. 1 is a schematic view of the system for treating the acidic discharged water of the main engine of the roll-on-roll-off ship of the present invention.
The system comprises a 1-sodium hydroxide cabinet, a 2-acid-base neutralization cabinet, a 3-discharge water tank, a 4-sodium hydroxide dosing pump, a 5-acid-base neutralization cabinet discharge pump, a 6-discharge water tank discharge pump, a 7-first liquid level switch, an 8-second liquid level switch, a 9-third liquid level switch, a 10-first pH sensor, a 11-second pH sensor, a 12-oil content detection device, a 13-electromagnetic valve, a 14-pneumatic three-way electromagnetic valve, a 15-fifth liquid level switch, a 16-first pipeline, a 17-second pipeline, a 18-third pipeline, a 19-fourth pipeline, a 20-fifth pipeline, a 21-sixth pipeline, a 22-seventh pipeline, a 23-branch pipeline, a 24-oil-water separator and a 25-suction check valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the system for treating the acid discharged water of the main engine of the roll-on-roll-off ship comprises a sodium hydroxide cabinet 1, an acid-base neutralization cabinet 2 and a discharged water tank 3, wherein the sodium hydroxide cabinet 1 is communicated with a sodium hydroxide inlet of the acid-base neutralization cabinet 2 through a first pipeline 16, and a sodium hydroxide dosing pump 4 is arranged on the first pipeline 16; the acid-base neutralization cabinet 2 is provided with a main machine acid drainage water inlet and two neutral drainage water outlets, one neutral drainage water outlet is communicated with the drainage water cabin 3 through a second pipeline 17, the other neutral drainage water outlet is connected to the outside through a third pipeline 18, the second pipeline 17 is connected with an electromagnetic valve 13, and the third pipeline 18 is connected with an acid-base neutralization cabinet discharge pump 5; the acid-base neutralization cabinet 2 is connected with a first pH sensor 10, a first liquid level switch 7 and a second liquid level switch 8, the first pH sensor 10 is electrically controlled and connected with a sodium hydroxide dosing pump 4, the first liquid level switch 7 is electrically controlled and connected with an electromagnetic valve 13, and the second liquid level switch 8 is electrically controlled and connected with an acid-base neutralization cabinet discharge pump 5; a fifth liquid level switch 15 is connected to the side wall of the acid-base neutralization cabinet 2, the fifth liquid level switch 15 is electrically connected with the electromagnetic valve 13 in a control mode, and the height of the fifth liquid level switch 15 is smaller than that of the first liquid level switch 7 and smaller than that of the second liquid level switch 8; a drainage water outlet of the drainage water tank 3 is connected to the outside of the ship board through a fourth pipeline 19, a drainage water tank discharge pump 6 is connected to the fourth pipeline 18, the drainage water tank 3 is connected with a third liquid level switch 9, and the third liquid level switch 9 is electrically and controllably connected with the drainage water tank discharge pump 6; the first liquid level switch 7 is positioned at the upper part of the side wall of the acid-base neutralization cabinet 2, the second liquid level switch 8 is positioned at the lower part of the side wall of the acid-base neutralization cabinet 2, and the third liquid level switch 9 is positioned at the upper part of the side wall of the discharge water tank 3; the outlet end of the third pipeline 18 and the outlet end of the fourth pipeline 19 are both communicated with the inlet of a fifth pipeline 20, the outlet end of the fifth pipeline 20 is communicated with the inlet of a pneumatic three-way electromagnetic valve 14, one outlet of the pneumatic three-way electromagnetic valve 14 is connected with a sixth pipeline 21, the outlet end of the sixth pipeline 21 extends to the side, the other outlet of the pneumatic three-way electromagnetic valve 14 is connected with a seventh pipeline 22, and the outlet end of the seventh pipeline 22 is communicated with the drainage water tank 3; the fifth pipeline 20 is connected with an oil content detection device 12, and the oil content detection device 12 is electrically connected with the pneumatic three-way electromagnetic valve 14 in a control way; the fourth pipeline 19 is connected with an oil-water separator 24 through a branch pipeline 23, and the communication point of the branch pipeline 23 and the fourth pipeline 19 is positioned on one side of the discharge water tank discharge pump 6 close to the discharge water tank 3; a second pH sensor 11 is connected to the branch pipe 23.
The method for treating the host acidic discharge water by adopting the rolling and loading ship host acidic discharge water treatment system comprises the following steps:
s1, after acid discharged water of a host is discharged to an acid-base neutralization cabinet 2, a first pH sensor 10 on the acid-base neutralization cabinet 2 detects the pH value of the acid discharged water of the host, if the discharged water is acidic, a signal is output to a sodium hydroxide dosing pump 4 to carry out NaOH dosing until the discharged water in the acid-base neutralization cabinet is neutral, the first pH sensor 10 outputs a signal to the sodium hydroxide dosing pump 4, and the sodium hydroxide dosing pump 4 is closed;
s2, when the ship sails to a discharge area, the second liquid level switch 8 controls the discharge pump 5 of the acid-base neutralization cabinet to be opened, the oil content monitoring device 12 detects oil content in neutral discharge water, and if the oil content monitoring reaches the standard, the oil content monitoring device 12 outputs a signal to the pneumatic three-way electromagnetic valve 14 to discharge the neutral discharge water to a board; if the oil content monitoring does not reach the standard, the oil content monitoring device 12 outputs a signal to the pneumatic three-way electromagnetic valve 14 to discharge the neutral discharge water to the discharge water cabin 3;
s3, when the ship sails to a limited discharge area, the discharge pump 5 of the acid-base neutralization cabinet stops working in the limited discharge area, when the water level in the acid-base neutralization cabinet 2 triggers the first liquid level switch 7, the first liquid level switch 7 outputs a signal to the electromagnetic valve 13, the electromagnetic valve 13 is opened, neutral discharge water in the acid-base neutralization cabinet 2 is discharged into the discharge water cabin 3 to be stored, and when the water level in the acid-base neutralization cabinet 2 is low to trigger the fifth liquid level switch 15, the electromagnetic valve 13 is automatically closed; when the ship sails away from the limited discharge area, the discharge pump 6 of the water discharge cabin is started to discharge water in the water discharge cabin 3 to the outside, the oil content monitoring device 12 detects oil content in neutral discharge water, and if the oil content monitoring reaches the standard, the oil content monitoring device 12 outputs a signal to the pneumatic three-way electromagnetic valve 14 to discharge the neutral discharge water to the side; if the oil content monitoring does not reach the standard, the oil content monitoring device 12 outputs a signal to the pneumatic three-way electromagnetic valve 14 to discharge the neutral discharge water to the discharge water cabin 3; in the process, when the liquid level in the water discharging cabin 3 triggers the fourth liquid level switch 9, the fourth liquid level switch 9 sends a signal to the water discharging cabin discharge pump 6, and the water discharging cabin discharge pump 6 is automatically closed;
and S4, the neutral drain water with the overproof oil content in the drain water cabin 3 is discharged into the drain water cabin discharge pump oil-water separator 24 to process the oil content.
Those of ordinary skill in the art will understand that: the above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The system for treating the acidic discharged water of the main engine of the roll-on-roll-off ship is characterized by comprising a sodium hydroxide cabinet, an acid-base neutralization cabinet and a discharged water tank, wherein the sodium hydroxide cabinet is communicated with a sodium hydroxide inlet of the acid-base neutralization cabinet through a first pipeline; the acid-base neutralization cabinet is provided with a main machine acid drainage water inlet and two neutral drainage water outlets, one neutral drainage water outlet is communicated with the drainage water cabin through a second pipeline, the other neutral drainage water outlet is connected to the outside of the ship through a third pipeline, the second pipeline is connected with an electromagnetic valve, and the third pipeline is connected with an acid-base neutralization cabinet discharge pump; the acid-base neutralization cabinet is connected with a first pH sensor, a first liquid level switch and a second liquid level switch, the first pH sensor is electrically controlled and connected with a sodium hydroxide dosing pump, the first liquid level switch is electrically controlled and connected with an electromagnetic valve, and the second liquid level switch is electrically controlled and connected with a discharge pump of the acid-base neutralization cabinet; the water outlet of the water tank is connected to the outboard through a fourth pipeline, a water tank discharge pump is connected to the fourth pipeline, the water tank is connected with a third liquid level switch, and the third liquid level switch is electrically controlled and connected with the water tank discharge pump.
2. The system of claim 1, wherein the first level switch is located at an upper portion of a side wall of the acid-base neutralization tank, the second level switch is located at a lower portion of the side wall of the acid-base neutralization tank, and the third level switch is located at an upper portion of a side wall of the blowdown tank.
3. The system for treating acid discharged water of a main engine of a ro-ro vessel according to claim 1, wherein a fifth liquid level switch is connected to the side wall of the acid-base neutralization tank, the fifth liquid level switch is electrically connected with the electromagnetic valve in a control manner, and the height of the fifth liquid level switch is lower than that of the first liquid level switch
The height is smaller than that of the second liquid level switch.
4. The system for treating acidic discharged water of the main engine of the ro-ro vessel according to claim 1, wherein the outlet end of the third pipeline and the outlet end of the fourth pipeline are both communicated with the inlet of a fifth pipeline, the outlet end of the fifth pipeline is communicated with the inlet of a pneumatic three-way solenoid valve, one outlet of the pneumatic three-way solenoid valve is connected with a sixth pipeline, the outlet end of the sixth pipeline extends to the side, the other outlet of the start three-way solenoid valve is connected with a third pipeline, and the outlet end of the seventh pipeline is communicated with the discharged water tank; and the fifth pipeline is connected with an oil content detection device, and the oil content detection device is electrically connected with the pneumatic three-way electromagnetic valve in a control manner.
5. The system for treating the acid discharged water of the main engine of the ro-ro vessel according to claim 4, wherein the fourth pipeline is connected with an oil-water separator through a branch pipeline, and a communication point of the branch pipeline and the fourth pipeline is positioned on one side of the discharge water tank discharge pump close to the discharge water tank.
6. The system for treating sour blowdown water from a ro-ro vessel host machine of claim 5 wherein a second pH sensor is connected to the branch pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222706168.7U CN218709552U (en) | 2022-10-13 | 2022-10-13 | Acid discharge water treatment system for main engine of roll-on-roll-off ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222706168.7U CN218709552U (en) | 2022-10-13 | 2022-10-13 | Acid discharge water treatment system for main engine of roll-on-roll-off ship |
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| Publication Number | Publication Date |
|---|---|
| CN218709552U true CN218709552U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222706168.7U Active CN218709552U (en) | 2022-10-13 | 2022-10-13 | Acid discharge water treatment system for main engine of roll-on-roll-off ship |
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| Country | Link |
|---|---|
| CN (1) | CN218709552U (en) |
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2022
- 2022-10-13 CN CN202222706168.7U patent/CN218709552U/en active Active
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