Ammonia gas circulation absorption and utilization device

Abstract

The utility model relates to an ammonia gas circulating absorption and utilization device which comprises a plurality of ammonia water tanks, the ammonia water tanks are communicated with ammonia gas pipelines, the outlet ends of the ammonia gas pipelines extend below the liquid level of a water-sealed tank, the bottom of the water-sealed tank is communicated with the inlet end of a circulating pump through an inlet pipeline, and the outlet end of the circulating pump is communicated with an outlet pipeline. The outlet end of the circulating pump is communicated with the backflow spraying pipeline through an outlet pipeline, and the spraying end of the backflow spraying pipeline is arranged at the top of the water-sealed tank. The device has the beneficial effects that ammonia gas generated by the ammonia water tank enters below the liquid level of the water-sealed tank through the ammonia gas pipeline, the ammonia gas is in contact with water, the ammonia gas is dissolved into the water to form ammonia water, and the ammonia gas which is not dissolved into the water enters the backflow spraying pipeline through the circulating pump in the water-sealed tank and is sprayed and absorbed through the spraying effect of the backflow spraying pipeline, so that the ammonia gas is sprayed and absorbed by the water-sealed tank. The ammonia gas is removed, the ammonia gas absorption effect is good, the phenomenon that the ammonia gas diffuses into the atmosphere is avoided, and the effect of circulating absorption and utilization of the ammonia gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia circulation absorption and utilization, and particularly relates to an ammonia circulation absorption and utilization device. Background Art

[0002] A thermoelectric desulfurization device is provided with an ammonia water tank, and the ammonia water mainly comes from a phenol-ammonia recovery device. The originally designed ammonia water concentration sent out by the phenol-ammonia recovery device is 15%. However, in order to reduce the amount of desalted water used for absorbing ammonia water and at the same time enhance the absorption effect of the absorption tower of the desulfurization device, the concentration of by-product ammonia water of the phenol-ammonia recovery device is now increased to 25%. Since the original design is to set a water seal tank at the top of the ammonia water tank, and the ammonia gas pipeline is directly inserted below the liquid level of the water seal tank to absorb the volatilized ammonia gas. Now that the ammonia water concentration has increased, the ammonia gas is likely to break through the water seal, resulting in incomplete absorption of ammonia gas, causing the ammonia gas in the environment to exceed the standard. If it often exceeds the standard, it will not only pollute the environment, but also cause damage to human health, and at the same time there is a great safety risk. Content of the Utility Model

[0003] The purpose of the utility model is to provide an ammonia circulation absorption and utilization device to solve the above problems existing in the prior art.

[0004] The technical problem to be solved by the utility model is to provide an ammonia circulation absorption and utilization device.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] An ammonia circulation absorption and utilization device includes a plurality of ammonia water tanks. The ammonia water tanks are communicated with an ammonia gas pipeline, and the outlet end of the ammonia gas pipeline extends below the liquid level of a water seal tank. The bottom of the water seal tank is communicated with the inlet end of a circulation pump through an inlet pipeline. The outlet end of the circulation pump is communicated with a reflux spray pipeline through an outlet pipeline, and the spray end of the reflux spray pipeline is arranged at the top of the water seal tank.

[0007] The beneficial effect of the utility model is that the ammonia gas generated by the ammonia water tank enters below the liquid level of the water seal tank through the ammonia gas pipeline. The ammonia gas contacts with water, and the ammonia gas dissolves in the water to form ammonia water. The ammonia gas that does not dissolve in the water enters the reflux spray pipeline through the circulation pump inside the water seal tank, and is sprayed and absorbed through the spraying action of the reflux spray pipeline to remove the ammonia gas. The ammonia gas absorption effect is good, and there is no phenomenon of ammonia gas diffusing into the atmosphere, improving the effect of ammonia gas circulation absorption and utilization.

[0008] On the basis of the above technical solution, the utility model can also be improved as follows.

[0009] Further, a discharge pipeline is communicated with the outlet pipeline, a maintenance tank is arranged at the bottom of the discharge pipeline, and a make-up water pipeline and a vent pipeline are arranged at the top of the water seal tank.

[0010] Furthermore, a pressure gauge is provided on the outlet pipeline.

[0011] Furthermore, a water level gauge is provided on the side wall of the water seal tank.

[0012] Furthermore, the top of the water seal tank is connected to an overflow pipeline, a trench is provided below the overflow pipeline, and the trench is connected to the inspection groove.

[0013] Furthermore, the two circulation pumps are distributed in parallel between the inlet pipeline and the outlet pipeline.

[0014] Furthermore, the ammonia gas pipeline, water supply pipeline, reflux spray pipeline, discharge pipeline, inlet pipeline and outlet pipeline are all provided with control valves.

[0015] Furthermore, the control valve on the outlet pipeline is a check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Ammonia water tank, 2. Ammonia gas pipeline, 3. Water seal tank, 4. Circulation pump, 5. Reflux spray pipeline, 6. Discharge pipeline, 7. Inspection tank, 8. Pressure gauge, 9. Water supply pipeline, 10. Vent pipeline, 11. Water level gauge, 12. Overflow pipeline, 13. Trench, 14. Inlet pipeline, 15. Outlet pipeline. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] like Figure 1 As shown, embodiment 1 of the utility model is an ammonia circulation absorption and utilization device, comprising a plurality of ammonia water tanks 1, the ammonia water tanks 1 are connected with an ammonia gas pipeline 2, the outlet end of the ammonia gas pipeline 2 extends below the liquid level of the water seal tank 3, the bottom of the water seal tank 3 is connected with the inlet end of the circulation pump 4 through the inlet pipeline 14, the outlet end of the circulation pump 4 is connected with the reflux spray pipeline 5 through the outlet pipeline 15, the spray end of the reflux spray pipeline 5 is arranged at the top of the water seal tank 3, the ammonia in the water seal tank 3 is sprayed through the reflux spray pipeline 5, so as to improve the absorption effect of the ammonia.

[0021] The ammonia gas generated by the ammonia water tank 1 enters below the liquid level of the water seal tank 3 through the gas ammonia pipeline 2. The ammonia gas contacts with water, and the ammonia gas dissolves in water to form ammonia water. The ammonia gas that does not dissolve in water enters the reflux spray pipeline 5 through the circulation pump 4 inside the water seal tank 3, and is sprayed and absorbed through the spraying action of the reflux spray pipeline 5 to remove ammonia gas. The ammonia gas absorption effect is good, and there is no phenomenon of ammonia gas diffusing into the atmosphere, improving the effect of the cyclic absorption and utilization of ammonia gas.

[0022] In Embodiment 2 of the present invention, an ammonia gas cyclic absorption and utilization device, on the basis of Embodiment 1, a discharge pipeline 6 is connected to the outlet pipeline 15. A maintenance tank 7 is provided at the bottom of the discharge pipeline 6. A water replenishing pipeline 9 and a vent pipeline 10 are provided at the top of the water seal tank 3. In order to ensure the absorption of ammonia gas and prevent gaseous ammonia from entering the atmosphere, the ammonia water in the water seal tank 3 is discharged into the maintenance tank 7 through the discharge pipeline 6 regularly every 4 hours. The water seal tank 3 is replenished with water through the water replenishing pipeline 9, and the excess gas in the water seal tank 3 is vented through the vent pipeline 10.

[0023] In Embodiment 3 of the present invention, an ammonia gas cyclic absorption and utilization device, on the basis of Embodiment 1, a pressure gauge 8 is provided on the outlet pipeline 15 for detecting the water flow pressure inside the outlet pipeline 15. When a certain flow rate is reached, water is sprayed into the water seal tank 3 through the reflux spray pipeline 5.

[0024] In Embodiment 4 of the present invention, an ammonia gas cyclic absorption and utilization device, on the basis of Embodiment 2, a water level gauge 11 is provided on the side wall of the water seal tank 3 for detecting the height of the liquid in the water seal tank 3, facilitating the timely replenishment of water to the water seal tank 3 by the water replenishing pipeline 9.

[0025] In Embodiment 5 of the present invention, an ammonia gas cyclic absorption and utilization device, on the basis of Embodiment 2, an overflow pipeline 12 is connected to the top of the water seal tank 3. A trench 13 is provided below the overflow pipeline 12. The trench 13 is connected to the maintenance tank 7. When the water level height in the water seal tank 3 is too high, the excess liquid is discharged into the trench 13 through the overflow pipeline 12 and finally flows into the maintenance tank 7.

[0026] In Embodiment 6 of the present invention, an ammonia gas cyclic absorption and utilization device, on the basis of Embodiment 1, two circulation pumps 4 are distributed in parallel between the inlet pipeline 14 and the outlet pipeline 15. By simultaneously turning on the two circulation pumps 4, the water absorption pressure is increased and the spraying effect is improved. When one of the circulation pumps 4 has a problem, the other circulation pump 4 works, which will not affect the spraying of ammonia gas.

[0027] In Embodiment 7 of the present invention, an ammonia gas cyclic absorption and utilization device, on the basis of any one of Embodiments 1 to 6, control valves are provided on the gas ammonia pipeline 2, the water replenishing pipeline 9, the reflux spray pipeline 5, the discharge pipeline 6, the inlet pipeline 14 and the outlet pipeline 15 for controlling the opening and closing of each pipeline.

[0028] In this Embodiment 8, an ammonia gas circulation absorption and utilization device, based on Embodiment 7, the control valve on the outlet pipeline 15 is a check valve to prevent the spray water from flowing back into the circulation pump 4.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An ammonia circulation absorption and utilization device, characterized in that, It includes multiple ammonia water tanks (1), the ammonia water tanks (1) are connected to an ammonia gas pipeline (2), the outlet end of the ammonia gas pipeline (2) extends below the liquid level of a water seal tank (3), the bottom of the water seal tank (3) is connected to the inlet end of a circulation pump (4) through an inlet pipeline (14), the outlet end of the circulation pump (4) is connected to a reflux spray pipeline (5) through an outlet pipeline (15), and the spray end of the reflux spray pipeline (5) is arranged at the top of the water seal tank (3).

2. The ammonia gas circulation absorption and utilization device according to claim 1, characterized in that, A discharge pipeline (6) is connected to the outlet pipeline (15), a maintenance tank (7) is arranged at the bottom of the discharge pipeline (6), and a water supply pipeline (9) and a vent pipeline (10) are arranged at the top of the water seal tank (3).

3. The ammonia gas circulation absorption and utilization device according to claim 1, wherein, A pressure gauge (8) is arranged on the outlet pipeline (15).

4. The ammonia gas circulation absorption and utilization device according to claim 2, characterized in that, A water level gauge (11) is arranged on the side wall of the water seal tank (3).

5. The ammonia gas circulation absorption and utilization device according to claim 2, wherein, An overflow pipeline (12) is connected to the top of the water seal tank (3), a trench (13) is arranged below the overflow pipeline (12), and the trench (13) is connected to the maintenance tank (7).

6. The ammonia gas circulation absorption and utilization device according to claim 1, characterized in that, The two circulation pumps (4) are distributed in parallel between the inlet pipeline (14) and the outlet pipeline (15).

7. The ammonia gas circulation absorption and utilization device according to any one of claims 1 to 6, characterized in that, Control valves are arranged on the ammonia gas pipeline (2), the water supply pipeline (9), the reflux spray pipeline (5), the discharge pipeline (6), the inlet pipeline (14) and the outlet pipeline (15).

8. The ammonia gas circulation absorption and utilization device according to claim 7, characterized in that, The control valve on the outlet pipeline (15) is a check valve.

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