Deaerator for nitric acid production

Abstract

The utility model discloses a deaerator for nitric acid production, which belongs to the technical field of nitric acid production, aims to solve the problems of poor deaeration effect on gas and inconvenience in adjustment of accumulation and dispersion degree of a water inlet position, and comprises a shell and a gas inlet pipeline, the gas inlet pipeline is fixed on the side wall of one side of the shell and is communicated with the inside of the shell, and the gas inlet pipeline is communicated with the inside of the shell. Two symmetrically-distributed water outlet pipes are fixed to the side wall of the lower end of the shell, and the water outlet pipes communicate with the interior of the shell; the multiple water receiving plates are distributed and fixed to the side wall of the inner side of the shell at equal intervals, and a plurality of symmetrically-distributed water inlet pipes are fixed to the side wall of one side of the shell; through the arrangement of the reciprocating assembly, the multiple water spray nozzles can be driven to reciprocate and continuously swing, so that hot water can be uniformly dispersed into the shell, the gas deoxidizing efficiency is further improved, and the problem that the time for reaching the saturation temperature is long due to the fact that the hot water inlet rate of an existing deaerator is not good is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nitric acid production, and particularly relates to a deaerator for nitric acid production. Background Art

[0002] In industrial production processes, deoxygenated water has a wide range of applications. Since it does not contain oxygen, it will not cause oxidation corrosion of pipelines and will not affect the activity of catalysts. It is often used for the dilution preparation of catalysts in pulp liquefaction or directly as a reactant to participate in reactions. Deoxygenated water is also required in the production of industrial nitric acid. The deoxygenated water used in industrial nitric acid is usually prepared by demineralized water passing through a deaerator for deoxygenation.

[0003] Comparative patent document publication number: "CN215208572U, a deaerator for nitric acid production, is provided with an adjustable spray device that can adjust the degree of dispersion of the U-shaped frame, thereby changing the degree of dispersion of the atomizing nozzle. When the aggregation degree of the atomizing nozzle is relatively high, the atomized demineralized water is relatively concentrated, and the concentration of the atomized demineralized water is relatively high. When the aggregation degree of the atomizing nozzle is relatively low, the atomized demineralized water is relatively dispersed, and the concentration of the atomized demineralized water is relatively low. Operators can change the degree of dispersion of the atomizing nozzle according to needs, thereby changing the concentration of the atomized demineralized water, so that low-pressure nitrogen can fully contact the oxygen in the atomized demineralized water, enabling nitrogen to carry out oxygen. However, in actual use, there are still the following problems: In the existing deaerator, due to the relatively fixed position of the built-in water spray head in the deaerator, it is difficult to adjust the degree of dispersion of the water spray head, resulting in a significant reduction in the deoxygenation effect on the gas. Moreover, when the deaerator reaches the saturation temperature, the time required is relatively long, making it difficult for the deoxygenation effect on the gas to meet the working requirements.

[0004] Therefore, a deaerator for nitric acid production is needed to solve the problems of poor deoxygenation effect on the gas and inconvenient adjustment of the degree of dispersion of the water inlet position in the existing technology. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a deaerator for nitric acid production to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A deaerator for nitric acid production, including a housing, further including

[0007] An intake pipe, the intake pipe is fixed to one side wall of the housing, the intake pipe is communicated with the interior of the housing, two symmetrically distributed outlet pipes are fixed to the low-end side wall of the housing, and the outlet pipes are communicated with the interior of the housing;

[0008] Multiple water receiving trays, the multiple water receiving trays are fixedly arranged at equal intervals on the inner side wall of the housing, multiple symmetrically distributed water inlet pipes are fixedly arranged on one side wall of the housing, and a reciprocating assembly adapted to the water inlet pipes is arranged on one side of the housing.

[0009] It should be noted in the solution that the reciprocating assembly includes

[0010] Two mounting frames, the two mounting frames are symmetrically distributed and fixedly arranged on the inner side wall of the top of the housing, and two symmetrically distributed transmission plates are arranged on one side of the housing;

[0011] Two hinge seats a, the two hinge seats a are symmetrically distributed and fixedly arranged on one side wall of the mounting frame, two symmetrically distributed hinge seats b are fixedly arranged on one side wall of the transmission plate, a connecting rod a is hinged on one side wall of the hinge seat a, a connecting rod b is hinged on one side of the hinge seat b, and the connecting rod a and the connecting rod b are rotationally connected through a central rod;

[0012] Multiple spray nozzles, the multiple spray nozzles are fixedly arranged on one side walls of the connecting rod a and the connecting rod b, and a connected docking hose is jointly fixed at one end of every two adjacent spray nozzles, and one end of the water inlet pipe is communicated with the docking hose;

[0013] A rotating shaft, the rotating shaft is rotationally connected with one side wall of the housing, a driving motor is fixedly arranged on one side wall of the housing, one end of the output shaft of the driving motor is coaxially fixed with one end of the rotating shaft, and a cam is tightly sleeved on the outer surface of the rotating shaft, and the cam is located between the two transmission plates;

[0014] Multiple additional mounting plates, the multiple additional mounting plates are symmetrically distributed and fixedly arranged on the inner side wall of the top of the housing, a guide rod is jointly fixed on one side wall of two adjacent additional mounting plates, the transmission plate is slidably penetrated by the guide rod, and a spring is sleeved on the outer surface of the guide rod, one end of the spring is fixed on one side wall of the additional mounting plate, and the other end of the spring is fixed on one side wall of the transmission plate.

[0015] It is further worth noting that arc-shaped plates are fixedly arranged on the adjacent side walls of the two transmission plates, one side of the arc-shaped plate is arranged as a smooth arc surface, and the cam is in contact with one side of the arc-shaped plate.

[0016] It is further necessary to note that multiple air release valves are fixedly arranged on one side wall of the housing, and the air release valves are located on one side of the water inlet pipe.

[0017] As a preferred implementation manner, two symmetrically distributed support frames are fixedly arranged on the outer side wall of the housing, a bottom plate is jointly fixed on the bottom side walls of the two support frames, and the projected area value of the bottom plate is greater than the projected area value of the housing.

[0018] As a preferred embodiment, a heat energy recovery pipe communicating with the interior is fixed to one side wall of the housing, and the heat energy recovery pipe is located on one side of the intake pipe.

[0019] Compared with the prior art, the deaerator for nitric acid production provided by the present utility model has at least the following beneficial effects:

[0020] (1) Through the arrangement of the reciprocating assembly, it can drive a plurality of water spray nozzles to reciprocate and continuously swing, so that hot water can be evenly dispersed into the housing, further improving the efficiency of gas deaeration, and then solving the problem that the existing deaerator takes a long time to reach the saturation temperature due to poor hot water inlet rate.

[0021] (2) By adopting the method that the water spray nozzles reciprocate and swing after being stressed, the problem that the poor aggregation and dispersion effect of the water spray nozzles affects the deoxidation efficiency is effectively solved, and the aggregation and dispersion degree of the water spray nozzles in the housing can be adjusted by adjusting the rotation speed of the driving motor, which significantly improves the gas deaeration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the side sectional structure of the present utility model;

[0024] Figure 3 is a schematic diagram of the structure at the connecting rod a and connecting rod b of the present utility model;

[0025] Figure 4 is a schematic diagram of the structure at the reciprocating assembly of the present utility model.

[0026] In the figure: 1, housing; 2, intake pipe; 3, water outlet pipe; 4, water receiving tray; 5, water inlet pipe; 6, reciprocating assembly; 61, mounting frame; 62, transmission plate; 63, hinge seat a; 64, hinge seat b; 65, connecting rod a; 66, connecting rod b; 67, water spray nozzle; 68, docking hose; 69, rotating shaft; 610, driving motor; 611, cam; 612, additional plate; 613, guide rod; 614, spring; 7, arc plate; 8, air release valve; 9, support frame; 10, bottom plate; 11, heat energy recovery pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes the present utility model in conjunction with embodiments.

[0028] Please refer to Figures 1-4, the utility model provides a deaerator for nitric acid production, which includes a housing 1, and also includes an intake pipe 2. The intake pipe is fixed to one side wall of the housing 1, and the intake pipe is connected to the inside of the housing 1. Two symmetrically distributed water outlet pipes 3 are fixed to the lowermost side wall of the housing 1, and the water outlet pipes 3 are connected to the inside of the housing 1; a multi-water receiving tray 4, the multi-water receiving tray 4 is fixedly arranged on the inner side wall of the housing 1 at equal intervals, and a plurality of symmetrically distributed water inlet pipes 5 are fixed to one side wall of the housing 1. A reciprocating assembly 6 adapted to the water inlet pipes 5 is arranged on one side of the housing 1.

[0029] Further, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, specifically, the reciprocating assembly 6 includes two mounting brackets 61, the two mounting brackets 61 are symmetrically distributed and fixed to the inner side wall of the top of the housing 1, and two symmetrically distributed transmission plates 62 are arranged on one side of the housing 1; two hinge seats a63, the two hinge seats a63 are symmetrically distributed and fixed to one side wall of the mounting bracket 61, and two symmetrically distributed hinge seats b64 are fixed to one side wall of the transmission plate 62. A connecting rod a65 is hinged to one side wall of the hinge seat a63, a connecting rod b66 is hinged to one side of the hinge seat b64, and the connecting rod a65 and the connecting rod b66 are rotatably connected through a central rod; a plurality of spray nozzles 67, the plurality of spray nozzles 67 are fixed to one side wall of the connecting rod a65 and the connecting rod b66, and a connected docking hose 68 is commonly fixed to one end of every two adjacent spray nozzles 67. One end of the water inlet pipe 5 is connected to the docking hose 68; a rotating shaft 69, the rotating shaft 69 is rotatably connected to one side wall of the housing 1, a driving motor 610 is fixed to one side wall of the housing 1, one end of the output shaft of the driving motor 610 is coaxially fixed to one end of the rotating shaft 69, and a cam 611 is tightly sleeved on the outer surface of the rotating shaft 69. The cam 611 is located between the two transmission plates 62; a plurality of additional mounting plates 612, the plurality of additional mounting plates 612 are symmetrically distributed and fixed to the inner side wall of the top of the housing 1, a guide rod 613 is commonly fixed to one side wall of two adjacent additional mounting plates 612, the transmission plate 62 is slidably penetrated by the guide rod 613, and a spring 614 is sleeved on the outer surface of the guide rod 613. One end of the spring 614 is fixed to one side wall of the additional mounting plate 612, and the other end of the spring 614 is fixed to one side wall of the transmission plate 62;

[0030] It should be noted that through the setting of the reciprocating assembly 6, it can drive a plurality of spray nozzles 67 to reciprocate and continuously swing, so as to improve the uniform dispersion of hot water into the housing 1, further improve the efficiency of gas deaeration, and then solve the problem that the existing deaerator takes a long time to reach the saturation temperature due to the poor hot water inlet rate.

[0031] Further, as Figure 3 and Figure 4As shown, it is worth specifically noting that arc-shaped plates 7 are fixed to the adjacent side walls of the two drive plates 62. One side of the arc-shaped plate 7 is arranged as a smooth arc surface, and the cam 611 is in contact with one side of the arc-shaped plate 7;

[0032] It should be noted that through the setting of the arc-shaped plate 7, the smoothness of the cam 611 during contact transmission with the drive plate 62 is ensured, which can prevent the situation of jamming when the cam 611 is transmitting, and has a good guarantee for the smoothness of the extrusion transmission between the cam 611 and the drive plate 62.

[0033] This solution has the following working process: When technicians use this device, gas is input into the interior of the housing 1 through the intake pipe 2, hot water is input into the water inlet pipe 5, and through the drive of the drive motor 610, the rotating shaft 69 rotates synchronously, driving the cam 611 to rotate synchronously. Utilizing the elastic action of the spring 614, it is ensured that the arc-shaped plate 7 is always in a state of being in contact with the cam 611. By means of the transmission between the cam 611 and the arc-shaped plate 7, the drive plate 62 is forced to reciprocate along the outer surface of the guide rod 613, and then the connecting rod a 65 and the connecting rod b 66 are forced to reciprocally swing along the central rod, thereby driving a plurality of spray nozzles 67 to move synchronously. It is ensured that hot water is input from the water inlet pipe 5 into the docking hose 68 to the spray nozzles 67 and sprayed out from the spray nozzles 67. When the air pressure value in the housing 1 reaches the preset value, the air pressure in the housing 1 is relieved by the air release valve 8, and the stored water in the housing 1 is discharged through the outlet pipe 3.

[0034] According to the above working process, it can be seen that through the setting of the reciprocating assembly 6, a plurality of spray nozzles 67 can be driven to reciprocate and continuously swing, so that hot water can be evenly dispersed into the housing 1, further improving the efficiency of gas deaeration. Then, the situation that the existing deaerator takes a long time to reach the saturation temperature due to poor hot water inlet rate is solved. By adopting the method that the spray nozzles 67 reciprocally swing after being stressed, the problem that the poor aggregation and dispersion effect of the spray nozzles 67 affects the deoxidation efficiency is effectively solved. Moreover, by adjusting the rotation speed of the drive motor 610, the purpose of adjusting the aggregation and dispersion degree of the spray nozzles 67 in the housing 1 can be achieved, which has a significant improvement in the gas deaeration effect.

[0035] Furthermore, as shown in Figure 1 、 Figure 3 and Figure 4 it is worth specifically noting that a plurality of air release valves 8 are fixed to one side wall of the housing 1, and the air release valves 8 are located on one side of the water inlet pipe 5;

[0036] It should be noted that through the setting of the air release valve 8, when the air pressure in the housing 1 exceeds the preset value, the air pressure in the housing 1 can be relieved in a timely manner, preventing the housing 1 from being damaged due to excessive pressure, and having a strong safety guarantee effect.

[0037] Further, as shown in Figure 1 and Figure 2 , it is worth specifically stating that two symmetrically distributed support frames 9 are fixed on the outer side wall of the housing 1, and a bottom plate 10 is jointly fixed on the bottom side walls of the two support frames 9. The projected area value of the bottom plate 10 is greater than the projected area value of the housing 1;

[0038] It should be noted that through the setting of the support frame 9, it plays a supporting role for the housing 1 to prevent the housing 1 from shaking and being unstable during use.

[0039] Further, as shown in Figure 2 and Figure 3 , it is worth specifically stating that a heat energy recovery pipe 11 communicating with the inside is fixed on one side wall of the housing 1, and the heat energy recovery pipe 11 is located on one side of the intake pipe 2;

[0040] It should be noted that the heat energy in the housing 1 is recovered and utilized through the heat energy recovery pipe 11, thereby improving the energy utilization rate of the device.

[0041] In summary: Through the setting of the arc plate 7, the smoothness of the contact transmission between the cam 611 and the transmission plate 62 is ensured, and the situation of the cam 611 getting stuck during transmission can be prevented. It has a good guarantee for the smoothness of the extrusion transmission between the cam 611 and the transmission plate 62. And through the setting of the air release valve 8, when the air pressure in the housing 1 exceeds the preset value, the air pressure in the housing 1 can be relieved in time to prevent the housing 1 from being damaged due to excessive pressure, and it has a strong safety guarantee effect. And through the setting of the support frame 9, it plays a supporting role for the housing 1 to prevent the housing 1 from shaking and being unstable during use. And the heat energy in the housing 1 is recovered and utilized through the heat energy recovery pipe 11, thereby improving the energy utilization rate of the device.

[0042] The drive motor 610 can be purchased on the market. The drive motor 610 is equipped with a power supply, which is a mature technology in this field and has been fully disclosed. Therefore, it will not be repeated in the specification.

Claims

1. An oxygen remover for nitric acid production, comprising a housing (1), characterized in that, It further includes an intake pipe (2) which is fixed to one side wall of the housing (1), and the intake pipe is communicated with the inside of the housing (1). Two symmetrically distributed water outlet pipes (3) are fixed to the low-end side wall of the housing (1), and the water outlet pipes (3) are communicated with the inside of the housing (1); a multi-water receiving tray (4) which is equidistantly distributed and fixed to the inner side wall of the housing (1). A plurality of symmetrically distributed water inlet pipes (5) are fixed to one side wall of the housing (1), and a reciprocating assembly (6) adapted to the water inlet pipes (5) is arranged on one side of the housing (1).

2. The deaerator for nitric acid production according to claim 1, characterized in that: The reciprocating assembly (6) includes two mounting brackets (61) which are symmetrically distributed and fixed to the inner top wall of the housing (1), and two symmetrically distributed transmission plates (62) are arranged on one side of the housing (1); two hinge seats a (63) which are symmetrically distributed and fixed to one side wall of the mounting bracket (61). Two symmetrically distributed hinge seats b (64) are fixed to one side wall of the transmission plate (62). One side wall of the hinge seat a (63) is hinged with a connecting rod a (65), and one side of the hinge seat b (64) is hinged with a connecting rod b (66). The connecting rod a (65) and the connecting rod b (66) are rotationally connected through a central rod; a plurality of spray nozzles (67) which are fixed to one side walls of the connecting rod a (65) and the connecting rod b (66). One end of every two adjacent spray nozzles (67) is jointly fixed with a communicated docking hose (68), and one end of the water inlet pipe (5) is communicated with the docking hose (68); a rotating shaft (69) which is rotationally connected with one side wall of the housing (1). A driving motor (610) is fixed to one side wall of the housing (1), and one end of the output shaft of the driving motor (610) is coaxially fixed with one end of the rotating shaft (69). A cam (611) is tightly sleeved on the outer surface of the rotating shaft (69), and the cam (611) is located between the two transmission plates (62); a plurality of additional mounting plates (612) which are symmetrically distributed and fixed to the inner top wall of the housing (1). A guide rod (613) is jointly fixed to one side walls of two adjacent additional mounting plates (612). The transmission plate (62) is slidably penetrated by the guide rod (613). A spring (614) is sleeved on the outer surface of the guide rod (613). One end of the spring (614) is fixed to one side wall of the additional mounting plate (612), and the other end of the spring (614) is fixed to one side wall of the transmission plate (62).

3. The deaerator for nitric acid production according to claim 2, characterized in that: Arc-shaped plates (7) are fixed to the adjacent side walls of the two transmission plates (62). One side of the arc-shaped plate (7) is arranged as a smooth arc surface, and the cam (611) is in contact with one side of the arc-shaped plate (7).

4. The deaerator for nitric acid production according to claim 3, wherein: A plurality of air release valves (8) are fixed to one side wall of the housing (1), and the air release valves (8) are located on one side of the water inlet pipe (5).

5. The deaerator for nitric acid production according to claim 4, characterized in that: Two symmetrically distributed support frames (9) are fixed to the outer side wall of the housing (1), and a bottom plate (10) is fixedly connected to the bottom side walls of the two support frames (9). The projected area value of the bottom plate (10) is greater than the projected area value of the housing (1).

6. The deaerator for nitric acid production according to claim 5, characterized in that: A heat recovery pipe (11) communicating with the inside is fixed to one side wall of the housing (1), and the heat recovery pipe (11) is located on one side of the intake pipe (2).

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