A device for producing hydrogen-ammonia fuel by using eutrophication water

Abstract

The application relates to the technical field of fuel preparation, in particular to a device for preparing hydrogen-ammonia fuel from eutrophication water bodies, which comprises a pretreatment assembly, a heating assembly, a stripping assembly and a hydrogen-oxygen preparation assembly. The stripping assembly comprises a first box body, a second box body and a collecting box. A stripping cavity and a collecting cavity are arranged in the first box body and are in gas communication. A gas pump is arranged outside the stripping cavity. An ammonia gas storage tank is arranged on the separating box. The hydrogen-oxygen preparation assembly comprises a cathode electrolytic cell and an anode electrolytic cell. The cathode electrolytic cell is in communication with the stripping cavity, and a hydrogen gas storage tank is arranged on the cathode electrolytic cell. The water body with adjusted PH value and heated enters the stripping cavity. The ammonia gas is blown out by the gas pump, enriched through the collecting box, and then extracted and purified through the separating box. The water body after stripping enters the cathode electrolytic cell for electrolysis and obtains pure hydrogen gas. Therefore, the hydrogen-ammonia fuel is prepared from the eutrophication water body, the production cost is low, and the device has high economic benefits.

Description

Technical Field

[0001] This invention relates to the field of fuel preparation technology, and more specifically to an apparatus for producing hydrogen ammonia fuel using eutrophic water. Background Technology

[0002] Invention patent CN114412668B discloses an ammonia-hydrogen hybrid power system, which uses hydrogen and ammonia as fuel. However, the required hydrogen and ammonia are generally produced separately, which is costly.

[0003] Eutrophic water bodies contain large amounts of nitrogen and phosphorus, with nitrogen primarily existing as free ammonia or NH4+. + Ammonia nitrogen exists in various forms. It is one of the main nutrients in water bodies and also one of the main oxygen-consuming pollutants, causing serious harm to aquatic organisms. Current technologies remove ammonia nitrogen from eutrophic water bodies using physicochemical methods or biological control methods. The physicochemical method, under alkaline conditions, utilizes the gas-liquid equilibrium relationship between the gas and liquid phase concentrations of ammonia nitrogen for separation. However, using the physicochemical method requires heating the water to ensure that free ammonia escapes as ammonia gas, resulting in high energy consumption. Furthermore, the physicochemical method only yields ammonia gas, resulting in a single product and low economic efficiency. Therefore, a device for producing hydrogen-ammonia fuel from eutrophic water bodies could be provided. Summary of the Invention

[0004] In view of the above-mentioned problems in the existing technology, the present invention provides a device for producing hydrogen ammonia fuel using eutrophic water, which has low production cost and high economic benefits.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: An apparatus for producing hydrogen-ammonia fuel using eutrophic water is provided, comprising a pretreatment component, a heating component connected to the pretreatment component, and a stripping component and a hydrogen-oxygen production component connected to the heating component. The stripping component includes a first chamber, a second chamber connected to the first chamber, and a collection chamber disposed between the first chamber and the second chamber. The first chamber contains a stripping chamber connected to the heating chamber and a collection chamber connected to the collection chamber. The stripping chamber and the collection chamber are in gas communication. A gas pump is disposed outside the stripping chamber. A waste liquid pipe is connected to the bottom of the stripping chamber. The collection chamber is also connected to a separation chamber. The waste liquid pipe is coiled around the outside of the separation chamber. An ammonia storage tank is disposed on the separation chamber. The hydrogen-oxygen production component includes a cathode electrolytic cell and an anodic electrolytic cell connected to the cathode electrolytic cell. The cathode electrolytic cell is connected to the stripping chamber through the waste liquid pipe. A hydrogen storage tank is disposed on the cathode electrolytic cell.

[0006] Furthermore, one end of the collection box is connected to the upper part of the first box, and the other end of the collection box is connected to the lower part of the second box. The cross-section of the collection box gradually decreases from the first box to the second box.

[0007] Furthermore, the stripping assembly also includes a water tank, and a plurality of nozzles are provided on the upper surface inside the collection tank, the plurality of nozzles being connected to the water tank.

[0008] Furthermore, the top of the second housing is provided with an air outlet, and the upper surface inside the second housing is also provided with several nozzles that communicate with the water tank.

[0009] Furthermore, the pretreatment component includes a pretreatment box, an adjustment box connected to the pretreatment box, and a storage box connected to the adjustment box, wherein multiple filter layers are arranged inside the pretreatment box from top to bottom.

[0010] Furthermore, the storage box contains an alkaline solution, which is a NaOH solution, a KOH solution, or a Ca(OH)2 solution.

[0011] Furthermore, the heating assembly includes a heating box communicating with the regulating box, a Fresnel lens disposed above the heating box, and an arc-shaped reflector disposed below the heating box.

[0012] Furthermore, a solar panel is provided on the upper surface of the heating box, and the focal point of the Fresnel lens is located below the solar panel.

[0013] Furthermore, a bracket is provided between the heating box and the reflector, and the focal point of the reflector is located at the bottom of the heating box.

[0014] The beneficial effects of this invention are as follows: This invention provides an apparatus for producing hydrogen-ammonia fuel from eutrophic water, comprising a pretreatment component, a heating component connected to the pretreatment component, and a stripping component and a hydrogen-oxygen production component connected to the heating component. The stripping component includes a first chamber, a second chamber connected to the first chamber, and a collection chamber disposed between the first chamber and the second chamber. The first chamber is provided with a stripping chamber connected to the heating chamber and a collection chamber connected to the collection chamber. The stripping chamber and the collection chamber are in gas communication. A gas pump is disposed outside the stripping chamber. A waste liquid pipe is connected to the bottom of the stripping chamber. The collection chamber is also connected to a separation chamber. The waste liquid pipe is coiled around the outside of the separation chamber. An ammonia storage tank is disposed on the separation chamber. The hydrogen-oxygen production component includes a cathode electrolytic cell and an anodic electrolytic cell connected to the cathode electrolytic cell. The cathode electrolytic cell is connected to the stripping chamber through the waste liquid pipe. A hydrogen storage tank is disposed on the cathode electrolytic cell. Water that has undergone pH adjustment by a pretreatment component and heating by a heating component enters the stripping chamber. An air pump blows out ammonia gas, which is then collected in a collection tank and further purified in a separation tank. The stripped water then enters a cathode electrolysis cell for electrolysis to obtain pure hydrogen gas. This process utilizes eutrophic water to produce hydrogen-ammonia fuel, resulting in low production costs and high economic benefits. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 The diagram shows a schematic of a device for producing hydrogen ammonia fuel from eutrophic water.

[0017] In the figures, the following reference numerals are used: 10, pretreatment component; 11, pretreatment box; 111, filter layer; 12, regulating box; 13, storage box; 20, heating component; 21, heating box; 22, reflector; 221, bracket; 23, Fresnel lens; 231, base; 24, solar panel; 25, first battery; 30, stripping component; 31, first housing; 311, longitudinal partition; 312, stripping chamber; 313 314. Collection chamber; 315. Waste liquid pipe; 316. Valve; 317. Air pump; 32. Collection box; 321. Nozzle; 322. Water tank; 33. Second box; 331. Gas outlet; 34. Separation box; 341. Ammonia storage tank; 342. Dryer; 40. Hydrogen and oxygen production assembly; 41. Cathode electrolytic cell; 411. Hydrogen storage tank; 422. Anode electrolytic cell; 421. Oxygen storage tank; 43. Electrode rod; 44. Second battery. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic structure of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0019] refer to Figure 1 As shown, the present invention provides an apparatus for producing hydrogen-ammonia fuel from eutrophic water, comprising a pretreatment component 10, a heating component 20 in liquid communication with the pretreatment component 10, a stripping component 30 for collecting ammonia, and a hydrogen-oxygen production component 40 for producing hydrogen and oxygen. The pretreatment component 10, heating component 20, stripping component 30, and hydrogen-oxygen production component 40 are sequentially connected by pipelines. In some embodiments, a water pump is installed on the pipeline connecting the pretreatment component 10, heating component 20, stripping component 30, and hydrogen-oxygen production component 40.

[0020] Combination Figure 1 As shown, the pretreatment component 10 includes a pretreatment tank 11, a pH adjustment tank 12 connected to the pretreatment tank 11, and a storage tank 13 connected to the pH adjustment tank 12. The pretreatment tank 11 contains multiple filter layers 111 arranged from top to bottom for filtering solids from the water. The storage tank 13 stores an alkaline solution, which can be NaOH solution, KOH solution, or Ca(OH)2. Eutrophic water is poured into the pretreatment tank 11 from the top, filtered through the filter layers 111, and then enters the pH adjustment tank 12. The alkaline solution in the storage tank 13 enters the pH adjustment tank 12 and mixes with the filtered water, adjusting the pH of the water to 10-11 and promoting the hydrolysis of ammonium ions in the water.

[0021] Combination Figure 1 As shown, the heating assembly 20 includes a heating box 21, an arc-shaped reflector 22 disposed below the heating box 21, and a Fresnel lens 23 disposed above the heating box 21. A solar panel 24 is disposed on the upper surface of the heating box 21, and the solar panel 24 is electrically connected to a first battery 25 via wires. The Fresnel lens 23 is mounted on the upper surface of the heating box 21, and the optical focal point of the Fresnel lens 23 is located below the solar panel 24 to prevent heat from accumulating on the solar panel 24 and causing damage. A bracket 221 for mounting the heating box 21 is disposed on the focusing surface of the reflector 22, the focusing focal point of the reflector 22 is located on the lower surface of the heating box 21, and a rotatable base 231 is mounted on the back surface of the reflector 22.

[0022] The heating chamber 21 and the regulating chamber 12 are connected by a pipe. Water with its pH value adjusted in the regulating chamber 12 enters the heating chamber 21. The Fresnel lens 23 and the reflector 22 simultaneously focus sunlight to heat the water in the heating chamber 21. At the same time, the solar panel 24 located on the upper surface of the heating chamber 21 converts solar energy into electrical energy and stores it in the first battery 25. After the water in the heating chamber 21 is heated to 55°C to 60°C, it is transported to the stripping assembly 30 through a pipe.

[0023] Combination Figure 1 As shown, the stripping assembly 30 includes a first housing 31, a second housing 33 communicating with the first housing 31, and a collection tank 32 disposed between the first housing 31 and the second housing 33. A longitudinal partition 311 is provided inside the first housing 31, dividing the internal space of the first housing 31 into a stripping chamber 312 and a collection chamber 313, which are connected at the top of the longitudinal partition 311. An air pump 316 for pumping outside air into the stripping chamber 312 is connected to the side wall of the stripping chamber 312. A waste liquid pipe 314 for communicating with the hydrogen-oxygen production assembly 40 is provided at the bottom of the stripping chamber 312, and a valve 315 is provided at the end of the waste liquid pipe 314 near the stripping chamber 312. The stripping chamber 312 is connected to the heating tank 21 via a pipe, allowing water from the heating tank 21 to enter the stripping chamber 312. When valve 315 is closed, air pump 316 introduces air into the water in stripping chamber 312. Free ammonia in the water mixes with air in the form of ammonia gas and then enters collection chamber 313.

[0024] Several atomizing nozzles 321 are installed on the upper surface of the inside of the collection box 32, and these nozzles 321 are connected to the water tank 322 via pipes. One end of the collection box 32 is connected to the upper end of the first box 31 near the collection chamber 313, and the other end of the collection box 32 is connected to the lower end of the second box 33. The collection box 32 is inclined towards the first box 31. The collection box 32 has a variable cross-section along its axial direction, with the cross-section at the connection between the collection box 32 and the first box 31 being larger than the cross-section at the connection with the second box 33. The nozzles 321 on the top of the collection box 32 spray water in a mist, and ammonia mixed in the air dissolves in the water mist. The water mist containing dissolved ammonia gathers into large droplets on the inner wall of the collection box 32 and flows into the collection chamber 313.

[0025] The second chamber 33 is roughly cylindrical, with an air outlet 331 at its top. Several nozzles 321, connected to the water tank 322, are also installed on the upper surface of the interior of the second chamber 33. The bottom of the second chamber 33 is connected to the water tank 322 via a pipe. The nozzles 321 spray water into the second chamber 33. Excess ammonia gas passing through the collection chamber 313 dissolves in the water droplets within the second chamber 33, while air exits through the air outlet 331, ensuring that ammonia gas is fully absorbed and preventing pollution. The water droplets containing dissolved ammonia gas form low-concentration ammonia water on the inner wall of the second chamber 33, which is insufficient for subsequent ammonia separation. This low-concentration ammonia water flows through a pipe into the water tank 322 for reuse.

[0026] Combination Figure 1 As shown, the stripping assembly 30 also includes a separation tank 34 connected to the collection chamber 313. An ammonia storage tank 341 is connected to the separation tank 34. The separation tank 34 is connected to the bottom of the collection chamber 313 via a pipe, allowing the ammonia solution in the collection chamber 313 to enter the separation tank 34. A waste liquid pipe 314 surrounds the outer surface of the separation tank 34. The residual heat from the liquid in the waste liquid pipe 314 heats the ammonia solution in the separation tank 34 to above 40°C, causing the ammonia solution to decompose into water and pure ammonia. The pure ammonia is separated from the water and enters the ammonia storage tank 341. In some embodiments, a dryer 342 and a gas pressurizer (not shown) can also be installed between the separation tank 34 and the ammonia storage tank 341. The desiccant in the dryer 342 can be soda lime.

[0027] refer to Figure 1 As shown, the hydrogen-oxygen production assembly 40 includes a cathode electrolytic cell 41 connected to the end of the waste liquid pipe 314 away from the stripping chamber 312, an anode electrolytic cell 42 connected to the cathode electrolytic cell 41, and electrode rods 43 respectively inserted into the cathode electrolytic cell 41 and the anode electrolytic cell 42. The electrode rods 43 in the cathode electrolytic cell 41 are connected to the negative terminal of the second battery 44, and the electrode plates in the anode electrolytic cell 42 are connected to the positive terminal of the second battery 44. It can be understood that the first battery 25 in a fully charged state can be used as the second battery 44, and the second battery 44 in a de-charged state can be used as the first battery 25. The gas above the cathode electrolytic cell 41 is connected to a hydrogen storage tank 411, and the gas above the anode electrolytic cell 42 is connected to an oxygen storage tank 421. The cathode electrolytic cell 41 and the anode electrolytic cell 42 are also connected to the liquid in the regulating tank through pipes. The reaction that occurs in the anode electrolytic cell 42 is: 4OH - -4e - ==O2 + 2H2O, the reaction occurs in cathode electrolytic cell 41: 2H2O + 2e - ==H2 + 2OH -As the water in the cathode electrolytic cell 41 and the anolytic cell 42 is continuously consumed, the pH of the electrolyte in the electrolytic cells continuously increases. The electrolyte can be used to adjust the pH value of the water in the regulating cells. In some embodiments, a dryer 342 and a gas pressurizer may also be provided between the cathode electrolytic cell 41 and the hydrogen storage tank 411, and between the anolytic cell 42 and the oxygen storage tank 421.

[0028] Pure hydrogen from hydrogen storage tank 411 and pure ammonia from ammonia storage tank 341 are mixed in a volume ratio of 3:7 to obtain a hydrogen-ammonia mixture for starting an ammonia fuel engine. This mixture is then burned with air in the engine's combustion chamber, forming a high concentration of free radicals such as OH, which accelerates the combustion rate and further ensures stable ignition and rapid combustion of ammonia. It is understood that the ammonia, hydrogen, and oxygen produced by the apparatus for producing hydrogen-ammonia fuel using eutrophic water provided by this invention can also be used as industrial raw materials.

[0029] The working process of the device for producing hydrogen ammonia fuel using eutrophic water provided by this invention is as follows: Eutrophic water is poured into the pretreatment tank 11 from the top, filtered through the filter layer 111, and then enters the regulating tank 12. An alkaline solution in the storage tank 13 enters the regulating tank 12 and mixes with the filtered water, adjusting the pH value of the water to 10-11 to promote the hydrolysis of ammonium ions in the water. The pH-adjusted water enters the heating tank 21, where a Fresnel lens 23 and a reflector 22 simultaneously focus sunlight to heat the water in the heating tank 21. Simultaneously, a solar panel 24 located on the upper surface of the heating tank 21 converts solar energy into electrical energy and stores it in the first battery 25. After the water in the heating tank 21 is heated to 55°C-60°C, it enters the stripping chamber 312 of the first tank 31, at which point the valve 315 is closed. Air pump 316 introduces air into the water in the stripping chamber 312. The free ammonia in the water mixes with the air in the form of ammonia gas and enters the collection chamber 313, and then enters the collection box 32.

[0030] Several nozzles 321 on the top of the collection tank 32 spray water in a mist, dissolving the ammonia in the mixed gas. The water mist containing dissolved ammonia gathers into large droplets on the inner wall of the collection tank 32 and flows into the collection chamber 313, thus completing the primary absorption of ammonia and obtaining ammonia water. The ammonia that has passed through the collection chamber 313 but has not been absorbed enters the second chamber 33, where several nozzles 321 spray water, dissolving the unabsorbed ammonia in the water droplets. The air then leaves through the air outlet 331, ensuring that the ammonia is fully absorbed a second time and avoiding pollution.

[0031] The ammonia water in the collection chamber 313 enters the separation tank 34. Valve 315 opens, and the waste liquid from the stripping chamber 312, after stripping treatment, enters the cathode electrolytic cell 41 and the anolytic cell 42 through the waste liquid pipe 314. Since the waste liquid pipe 314 surrounds the outer surface of the separation tank 34, the residual heat of the liquid in the waste liquid pipe 314 heats the ammonia water in the separation tank 34 to above 40°C, causing the ammonia water to decompose into water and pure ammonia gas. The pure ammonia gas separates from the water and enters the ammonia gas storage tank 341. The waste liquid in the cathode electrolytic cell 41 and the anolytic cell 42 is electrolyzed. The resulting hydrogen gas enters the hydrogen storage tank 411, and the resulting oxygen gas enters the oxygen storage tank 421. Hydrogen and ammonia gas are mixed at a volume ratio of 3:7 to obtain a hydrogen-ammonia mixture for starting an ammonia fuel engine.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0034] The above description, based on the preferred embodiments of the present invention, provides guidance. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A device for producing hydrogen-ammonia fuel from eutrophic water, characterized in that: The system includes a pretreatment component, a heating component connected to the pretreatment component, and a stripping component and a hydrogen-oxygen production component connected to the heating component. The pretreatment component includes a regulating tank. The heating component includes a heating tank connected to the regulating tank. The stripping component includes a first housing, a second housing connected to the first housing, and a collection tank disposed between the first housing and the second housing. The first housing has a stripping chamber connected to the heating tank and a collection chamber connected to the collection tank. The stripping chamber and the collection chamber are in gas communication. A gas pump is disposed outside the stripping chamber. A waste liquid pipe is connected to the bottom of the stripping chamber. The collection chamber is also connected to a separation tank. The waste liquid pipe is coiled around the outside of the separation tank. An ammonia storage tank is disposed on the separation tank. The hydrogen-oxygen production component includes a cathode electrolytic cell and an anodic electrolytic cell connected to the cathode electrolytic cell. The cathode electrolytic cell is connected to the stripping chamber through the waste liquid pipe. A hydrogen storage tank is disposed on the cathode electrolytic cell. The cathode electrolytic cell and the anodic electrolytic cell are also connected to the regulating tank through pipes.

2. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 1, characterized in that: One end of the collection box is connected to the upper part of the first box, and the other end of the collection box is connected to the lower part of the second box. The cross-section of the collection box gradually decreases from the first box to the second box.

3. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 2, characterized in that: The stripping assembly also includes a water tank, and a plurality of nozzles are provided on the upper surface inside the collection tank, the plurality of nozzles being connected to the water tank.

4. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 3, characterized in that: The top of the second housing is provided with an air vent, and the upper surface inside the second housing is also provided with several nozzles that communicate with the water tank.

5. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 1, characterized in that: The pretreatment component includes a pretreatment box, an adjustment box connected to the pretreatment box, and a storage box connected to the adjustment box. The pretreatment box has multiple filter layers arranged from top to bottom inside.

6. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 5, characterized in that: The storage box contains an alkaline solution, which is a NaOH solution, a KOH solution, or a Ca(OH)2 solution.

7. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 5, characterized in that: The heating assembly includes a heating box connected to the regulating box, a Fresnel lens disposed above the heating box, and an arc-shaped reflector disposed below the heating box.

8. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 7, characterized in that: A solar panel is provided on the upper surface of the heating box, and the focal point of the Fresnel lens is located below the solar panel.

9. The apparatus for producing hydrogen ammonia fuel from eutrophic water according to claim 8, characterized in that: A bracket is provided between the heating box and the reflector, and the focal point of the reflector is located at the bottom of the heating box.

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