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1. WO2017139866 - MARINE-BASED WATER PROCESSING AND DISPOSAL SYSTEM AND METHOD

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

Claims

1. A water processing system for use on a marine vessel equipped with at least one engine and a corresponding at least one exhaust assembly, the water processing system comprising:

a tainted water source;

a pump in fluid communication with the tainted water source;

at least one fine spray nozzle in fluid communication with the pump, the at least one fine spray nozzle being positioned to direct a spray of the tainted water into one of the at least one exhaust assembly;

a controller configured to:

receive an indication of the current operating load of the engine corresponding to the exhaust assembly;

select a flow rate for the tainted water from a plurality of predefined flow rates defined for a corresponding plurality of engine operating loads; and

control the flow of the tainted water according to the selected flow rate from the tainted water source to the at least one fine spray nozzle.

2. The water processing system of claim 1 , wherein the controller controls a valve regulating the flow of the tainted water from the tainted water source to the at least one fine spray nozzle.

3. The water processing system of claim 2, wherein the indication of the current operating load excludes a temperature reading of the corresponding exhaust assembly.

4. The water processing system of any one of claims 1 to 3, wherein the plurality of predefined flow rates correspond to a plurality of incremental operating loads of the corresponding engine.

5. The water processing system of claims 1 to 4, wherein the plurality of flow rates are predetermined based on a previous evaluation of a temperature and mass flow rate of exhaust gases produced by the corresponding engine at one or more selected operating loads.

6. The water processing system of any one of claims 1 to 5, wherein the controller is further configured to activate the pump when the indication indicates that current operating load of the corresponding engine meets or exceeds a minimum operating load.

7. The water processing system of claim 6, wherein the controller is further configured to deactivate the pump when the indication indicates that current operating load of the corresponding engine is below a minimum operating load.

8. The water processing system of any one of claims 1 to 7, wherein the indication of the current operating load comprises an indication of an engine throttle position.

9. The water processing system of any one of claims 1 to 8, wherein droplet diameters of the spray of the tainted water range from about 25 μm to about 400 μm .

10. The water processing system of any one of claims 1 to 9, wherein the tainted water source comprises a collection tank receiving tainted water drawn from at least one of multiple sources on the marine vessel.

11. The water processing system of claim 10, wherein the multiple sources include one or more of a marine sanitation device, an oily water separation system, and a bilge of the marine vessel.

12. The water processing system of any one of claims 1 to 11, wherein the tainted water originates from sewage, bilge water, grey water, residual water from washing a cargo hold or the marine vessel, or a combination of two or more thereof.

13. The water processing system of any one of claims 1 to 12, wherein the at least one fine spray nozzle is positioned to direct the spray of the tainted water into the exhaust assembly below the exhaust stack of the exhaust assembly.

14. The water processing system of claim 13, wherein the at least one fine spray nozzle is positioned to direct the spray of the tainted water into the exhaust assembly between the exhaust stack of the exhaust assembly and above a water collector of the exhaust assembly.

15. The water processing system of any one of claims 1 to 14, comprising a plurality of fine spray nozzles.

16. The water processing system of any one of claims 1 to 15, wherein the marine vessel comprises a plurality of engines and a plurality of corresponding exhaust assemblies, and the water processing assembly further comprises:

at least one fine spray nozzle positioned to direct the spray of the tainted water into each exhaust assembly of the plurality of corresponding exhaust assemblies, each fine spray nozzle being in fluid communication with the pump and the tainted water source via a manifold, the controller being configured to control a flow of the tainted water from the tainted water source to each of the at least one fine spray nozzle for each corresponding exhaust assembly, responsive to a detected current operating load of the engine corresponding to the exhaust assembly.

17. The water processing system of claim 16, wherein the controller controls a plurality of valves regulating the flow of the tainted water from the tainted water source to the at least one fine spray nozzle for the plurality of corresponding exhaust assemblies.

18. A water disposal system for use with at least one engine and a corresponding at least one exhaust stack, the water disposal system comprising:

a vaporization chamber comprised in an exhaust assembly, the vaporization chamber comprising at least one fine spray nozzle positioned to direct a spray of water into exhaust from the at least one engine corresponding to the exhaust assembly passing through the exhaust assembly;

a water source for holding water received from one or more water treatment systems;

a processing apparatus for delivering the water from the water source to the vaporization chamber;

a water collection apparatus comprised in the exhaust assembly positioned to receive and sequester overflow water sprayed into the exhaust assembly by the at least one fine spray nozzle that is expelled from the vaporization chamber in liquid form.

19. The water disposal system of claim 18, wherein the processing apparatus comprises: at least one pump in fluid communication with the water source and the at least one fine spray nozzle;

at least one valve in fluid communication with the pump, regulating the flow of the water from the source to the at least one fine spray nozzle; and

a controller configured to operate the at least one valve to adjust a flow rate of the water to the at least one fine spray nozzle.

20. The water disposal system of claim 19, wherein the controller is configured to adjust the flow rate of the water responsive to a detected current state of the engine corresponding to the exhaust assembly, the current state being correlated to an estimated mass flow range and temperature range of exhaust emitted by the engine into the exhaust assembly.

21. The water disposal system of any one of claims 18 to 20, wherein the one or more water treatment systems comprise a marine sanitation device, an oily water separation system, or both a marine sanitation device and an oily water separation system, the water held in the water source thus having been treated by the one or more water treatment systems before being received in the water source.

22. The water disposal system of claim 21, further comprising at least one purge line for removal of water between the water source and the pump.

23. The water disposal system of either claim 21 or 22, wherein the processing apparatus further comprises a strainer between the water source and the pump.

24. The water disposal system of claim 23, further comprising a flush line in communication with the strainer.

25. The water disposal system of any one of claims 18 to 24, implemented on a marine vessel.

26. The water disposal system of claim 25, wherein the water collection apparatus comprises at least one bilge line.

27. A method of water disposal implemented on a marine vessel, the method comprising: receiving tainted water from at least one tainted water source;

while an engine of the marine vessel is operating, regulating a flow of the tainted water to at least one fine spray nozzle in response to a detected current operating load of the engine, the at least one fine spray nozzle being positioned to direct a spray of the tainted water into an exhaust assembly corresponding to the engine; and

spraying the tainted water into engine exhaust gas in the exhaust assembly to thereby vaporize the tainted water.

28. The method of claim 27, wherein regulating the flow of the tainted water comprises: receiving an indication of the current operating load of the engine;

selecting a flow rate for the tainted water based on the indication of the current operating load; and

adjusting the flow of the tainted water between the at least one tainted water source and the at least one fine spray nozzle up to about the selected flow rate.

29. The method of claim 28, wherein selecting the flow rate comprises selecting a flow rate from a set of flow rates, the flow rates of the set of flow rates corresponding to a set of operating loads of the engine.

30. The method of claim 29, wherein the set of flow rates are determined from temperatures and mass flow rates of exhaust gases produced by the engine at the set of operating loads.

31. The method of any one of claims 28 to 30, further comprising:

detecting a change in the operating load of the engine;

selecting a new flow rate for the tainted water based on the changed operating load; and adjusting the flow of the tainted water between the at least one tainted water source and the at least one fine spray nozzle up to about the selected flow rate.

32. The method of any one of claims 27 to 31 , further comprising catching falling overflow water sprayed into the exhaust assembly by the at least one fine spray nozzle.

33. The method of any one of claims 27 to 32, wherein the at least one tainted water source includes one or more of a marine sanitation device, an oily water separation system, and a bilge of the marine vessel.

34. The method of any one of claims 27 to 33, wherein the tainted water comprises water previously treated by the oily water separation system.