Tower type iron-containing waste acid oxidation reaction device

Abstract

The utility model discloses a tower type iron-containing waste acid oxidation reaction device. Comprising a tower body and a circulating pump, a dosing opening is formed in the tower body; a feeding hole and a first circulating hole are formed in the top end of the tower body; a baffling assembly is arranged in the tower body; the baffle assembly comprises a plurality of baffle plates, and the baffle plates form a baffle reaction channel in the tower body; the bottom end of the tower body is provided with an aeration assembly, a discharge port and a second circulation port; an inlet of the circulating pump is communicated with the second circulating port, and an outlet of the circulating pump is communicated with the first circulating port. According to the waste acid oxidation device, the flow path of waste acid liquid is effectively prolonged through the baffle plates, the gas-liquid contact reaction time is prolonged, the reaction effect is improved, and compared with a waste acid oxidation device in the prior art, the production efficiency is greatly improved; the modular design is adopted, and production, transportation and installation of the device are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical equipment especially relates to a tower type iron-containing waste acid oxidation reaction device. BACKGROUND

[0002] Pickling is a commonly used method to remove the oxide skin and rust on the surface of steel. For example, pickled steel has many advantages, pickling can make the steel surface more neat, improve the steel surface structure, prolong the service life of the steel, improve the adhesion of the metal coating or non-metallic coating and the alloying treatment ability, remove the iron oxide produced on the steel surface during rolling, and improve the steel surface quality. With the progress of pickling process, the acid concentration is constantly lowered. When the pickling effect is significantly reduced, the pickling solution cannot be used continuously and needs to be replaced with new pickling solution, which produces a large amount of waste acid. These waste acids have high concentration, are easy to form acid mist, and are large in quantity and rich in ferrous salt. If not treated, direct discharge will cause serious pollution to the environment. Through oxidation, steel pickling waste acid can be converted into chemical products such as ferric chloride, achieving the industrial purpose of turning waste into treasure.

[0003] Currently, special designed oxidation equipment is needed for waste acid oxidation process. The oxidation tower for preparing ferric chloride by applying steel pickling solution disclosed in Chinese patent No. CN202123331260.1 is a packed spray tower, which can only produce intermittently. At the same time, the material needs to circulate in the equipment during the operation of the equipment, resulting in low production efficiency of the device. SUMMARY

[0004] In view of this, the present application aims to at least partially solve the problems in the related art. The purpose of the present application is to provide a tower type iron-containing waste acid oxidation reaction device, which has the characteristics of high production efficiency and convenient production, transportation and installation of the device.

[0005] The tower type iron-containing waste acid oxidation reaction device provided by the present application comprises a tower body and a circulating pump. The tower body is provided with a dosing port. The top end of the tower body is provided with a feed inlet and a first circulation port. The inside of the tower body is provided with a baffle assembly. The baffle assembly comprises a plurality of baffle plates, and the plurality of baffle plates form a baffle reaction channel in the tower body. The bottom end of the tower body is provided with an oxygen aeration assembly, a discharge port and a second circulation port. The inlet of the circulating pump is in communication with the second circulation port, and the outlet of the circulating pump is in communication with the first circulation port.

[0006] The operation principle of the tower type iron-containing waste acid oxidation reaction device of the application is as follows: the material in the oxidation tower in the starting stage is newly added, and has not formed concentration and temperature gradient, and needs to be circulated for a period of time until qualified material can be output to enter the production stage. In the production stage, the oxidation tower has formed suitable oxygen and catalyst concentration and temperature gradient, and can continuously output qualified material without circulating reaction. Specifically, in the starting stage, the waste acid enters the tower body through the feeding port, the catalyst enters the tower body through the feeding port, and the oxygen enters the tower body through the aeration assembly to fully contact with the material and contact with the waste acid and the catalyst in countercurrent to occur oxidation reaction. The reacted waste acid is discharged from the second circulating port, then pumped to the first circulating port by the circulating pump, and enters the tower body from the first circulating port to continue reaction, and the cycle is continued until the sampling of the lower cylinder section is qualified, and the circulation is closed. Then, in the production stage, the waste acid continuously enters the reactor through the feeding port, the catalyst and the oxygen are continuously input, and the qualified material after oxidation is continuously discharged from the discharging port to realize continuous production.

[0007] The application effectively prolongs the flow path of the waste acid through the baffle, increases the gas-liquid contact reaction time, and improves the reaction effect; the aeration assembly can promote the full dispersion of oxygen, so that the waste acid fully contacts with the oxygen for reaction, and after the suitable concentration and temperature gradient are formed in the tower body, the material does not need to be repeatedly circulated in the equipment, and qualified material can be continuously output. Compared with the waste acid oxidation device of the prior art, the application greatly improves the production efficiency, and effectively prolongs the reaction path of the waste acid liquid through the baffle. Through the modular design, the entire tower body is designed as five parts of an upper head assembly, an upper cylinder section, a lower cylinder section, a baffle assembly and a lower head assembly, which is beneficial to the production, transportation and installation of the device.

[0008] In the preferred technical scheme of the application, the baffle plates are perpendicular to the side walls of the inner cavity of the tower body.

[0009] The staggered arrangement of the baffle plates can enhance the disturbance of the waste acid liquid in the tower body, so that the waste acid liquid can flow transversely between the baffle plates for multiple times, effectively prolongs the running path of the waste acid in the tower body, increases the contact reaction time of the waste acid and oxygen, and improves the reaction effect.

[0010] In the preferred technical scheme of the application, the baffle assembly further includes at least one group of connecting rod assemblies; the connecting rod assembly includes two connecting rods; the baffle plate is in an arc shape; the baffle plate is provided with a notch on the arc edge; and the baffle plate is welded with the connecting rod into an integral whole through the notch.

[0011] The special design of the baffle plate can change the flow direction of the fluid, increase the turbulence degree, reduce the flow dead zone, and make the material fully contact and react with oxygen. The baffle assembly is clamped on the inner column of the cylinder segment through the gap of the arc top end, which can reduce the gap space between the baffle plate and the side wall of the inner cavity of the tower body, make the waste acid liquid fully pass through the baffle plate when flowing down from the top end, reduce the baffle dead zone, promote the full contact and reaction of the material and oxygen, and improve the space utilization of the device.

[0012] In the preferable technical scheme of the present application, the central angle of the arc edge of the baffle plate is 200-240 degrees.

[0013] Specifically, the radius of the arc edge of the baffle plate is slightly smaller than the radius of the section circle of the inner cavity of the tower body, and the baffle plate with a central angle of 200-240 degrees can be coordinated with the space of the tower body, which plays a role in baffle and does not affect the flow rate, thereby improving the production efficiency.

[0014] In the preferable technical scheme of the present application, the connecting rod is provided with a triangular rib plate corresponding to the baffle plate, which is used for reinforcing the baffle plate; the connecting rod is connected through three cross beams, and the cross beam is perpendicular to the connecting rod.

[0015] Specifically, the triangular rib plate is a commonly used reinforcing tool with strong stability. The baffle plate is fixed on the connecting rod by using the triangular rib plate, which has excellent impact resistance and carrying capacity, and improves the local rigidity and carrying capacity of the baffle plate. At the same time, the two connecting rods are fixed and connected by using the cross beam, which facilitates the simultaneous control of the baffle plates on the two connecting rods, and facilitates the installation of the baffle plates, and makes the baffle plates more stable and solid in the tower body.

[0016] In the preferable technical scheme of the present application, the tower body comprises an upper cylinder segment and a lower cylinder segment; the upper cylinder segment is at least one, and the upper cylinder segment is arranged above the lower cylinder segment; when the upper cylinder segment is multiple, the multiple upper cylinder segments are arranged in sequence from top to bottom, and are all arranged above the lower cylinder segment.

[0017] The upper end of the upper cylinder segment is provided with an upper head; the feed inlet and the first circulating inlet are arranged on the upper head; the dosing inlet is located on the side wall of the lower cylinder segment; the bottom end of the lower cylinder segment is provided with a lower head; the oxygen aeration assembly, the discharge outlet and the second circulating inlet are located on the lower head.

[0018] Each component of the present application is relatively small, which is beneficial to the modular production, transportation, installation and maintenance of the device, and improves the market promotion prospect of the device. By adjusting the number of the upper cylinder segments, different design capacities can be obtained, which is beneficial to meet the production needs of different occasions.

[0019] In the preferable technical scheme of the utility model, the side of the connecting rod close to the inner cavity side wall of the tower body is equipped with a cylinder segment inner column; the cylinder segment inner column is parallel to and abuts against the connecting rod; the baffle is clamped with the connecting rod and the cylinder segment inner column through the gap.

[0020] Specifically, the upper cylinder segment and the lower cylinder segment are both equipped with two cylinder segment inner columns, the cylinder segment inner column and the connecting rod are fixedly connected with the flange through fasteners, and the fasteners include hexagonal head threaded bolts, connecting plates and sealing plates. The hexagonal head threaded bolts are connected with the flange after sequentially penetrating through the sealing plates, the connecting plates and hexagonal head nuts. The parallel and abutting connection of the cylinder segment inner column and the connecting rod is beneficial to enhancing the stability of the baffle assembly and improving the durability of the device.

[0021] In the preferable technical scheme of the utility model, the oxygen aeration assembly includes an air inlet and a microporous aerator; the air inlet is arranged at the bottom end of the tower body; and the microporous aerator is located at the bottom of the inner cavity of the tower body and communicates with the air inlet.

[0022] Oxygen is input from the air inlet, dispersed by the microporous aerator, and fully contacted with waste acid to generate an oxidation reaction and improve the oxidation efficiency.

[0023] In the preferable technical scheme of the utility model, the top end of the tower body is provided with a burst port and an exhaust port, and the burst port and the exhaust port are used for maintaining the safe pressure state in the tower body.

[0024] The exhaust port can timely discharge excess gas pressure, the burst port is provided with a bursting disc, and the bursting disc is ruptured rapidly when the internal pressure of the tower body reaches a predetermined value, so as to release the overpressure and protect the oxidation tower and personnel safety.

[0025] In the preferable technical scheme of the utility model, the side wall of the tower body is provided with at least one group of monitoring ports, the monitoring ports include at least one of a sampling port, a sight glass port and a temperature port; and / or, the top end of the tower body is provided with a pressure gauge port.

[0026] During the oxidation of waste acid, related parameters in the oxidation reaction process need to be monitored to guarantee the qualified rate of the material after the reaction; the sampling port can sample the waste acid in the reaction and is used for checking whether the material is qualified; a thermometer is placed in the temperature port and is used for checking the reaction temperature in the tower body; and a pressure gauge is placed in the pressure gauge port and is used for checking the pressure in the tower body.

[0027] The utility model has at least the following beneficial effects:

[0028] The flow path of waste acid is effectively prolonged by the baffle, which is beneficial to increase the gas-liquid contact reaction time and improve the reaction effect; the aeration assembly can promote the sufficient dispersion of oxygen, so that the waste acid liquid and oxygen are fully contacted and reacted, and after the suitable concentration and temperature gradient are formed in the tower body, the material does not need to be repeatedly circulated in the equipment, and at this time, qualified materials can be continuously output. Compared with the waste acid oxidation device in the prior art, the production efficiency is greatly improved, and the space utilization of the device is also improved, which is beneficial to the production, transportation and installation of the device. The utility model has the advantages of simple and compact structure and simple process, which reduces the production cost of the ferric chloride and the treatment difficulty and cost of the steel waste acid liquid. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings incorporated into the specification and forming a part thereof show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor.

[0031] Figure 1 It is a schematic diagram of a tower type iron-containing waste acid oxidation reaction device according to an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of an upper cylinder section according to an embodiment of the present application;

[0033] Figure 3 It is Figure 2 It is an enlarged view of the A marked part in the middle;

[0034] Figure 4 It is a schematic diagram of an upper head according to an embodiment of the present application;

[0035] Figure 5 It is a schematic diagram of a lower head according to an embodiment of the present application;

[0036] Figure 6 It is a schematic diagram of a baffle assembly according to an embodiment of the present application;

[0037] Figure 7 It is a schematic diagram of a baffle according to an embodiment of the present application.

[0038] Reference signs:

[0039] 10, upper head; 101, first circulating port; 102, feeding port; 103, liquid level port; 104, bursting port; 105, pressure gauge port; 106, exhaust port; 107, standby port; 11, short connection; 12, flange;

[0040] 20, upper cylinder section; 21, cylinder section inner column; 22, connecting rod; 221, crossbeam; 222, sealing plate 1; 223, connecting plate; 224, hexagonal head threaded bolt; 225, hexagonal nut; 23, baffle; 231, triangular baffle; 24, sampling port; 25, manhole; 26, lug support; 27, sight port; 28, temperature port; 29, reinforcing ring;

[0041] 30, lower cylinder section; 31, dosing port;

[0042] 40, lower head; 41, microporous aerator; 42, air inlet; 43, discharge port; 44, second circulating port. DETAILED DESCRIPTION

[0043] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical solutions, and cannot be understood as indicating that the indicated mechanisms or elements must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0044] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intervening elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted so as not to obscure the description of this application with unnecessary detail.

[0046] Example 1

[0047] like Figures 1-7 As shown, this embodiment provides a tower-type iron-containing waste acid oxidation reactor, including: a tower body and a circulating pump; the side wall of the tower body is provided with a dosing port 31; the top of the tower body is provided with a feed port 102 and a first circulation port 101; the inside of the tower body is provided with a baffle assembly; the baffle assembly includes a plurality of baffle plates 23; the plurality of baffle plates 23 form a baffle reaction channel in the tower body; the bottom of the tower body is provided with an oxygen aeration assembly, a discharge port 43 and a second circulation port 44; the inlet of the circulating pump is connected to the second circulation port 44; the outlet of the circulating pump is connected to the first circulation port 101.

[0048] The operating principle of the tower-type iron-containing waste acid oxidation reactor in this embodiment is divided into a start-up stage and a production stage. During the start-up stage, the waste acid in the oxidation tower is newly added and has not yet formed a concentration and temperature gradient, requiring circulation for a period of time until qualified materials can be output before entering the production stage. During the production stage, a suitable concentration and temperature gradient of oxygen and catalyst have been formed in the oxidation tower, allowing for continuous output of qualified materials without the need for circulation. Specifically, in the start-up stage: waste acid enters the tower through inlet 102, catalyst enters through dosing inlet 31, and oxygen enters the tower through the aeration components to fully contact the waste acid and react counter-currently with the waste acid and catalyst. The reacted waste acid is discharged through the second circulation port 44 and then pumped to the first circulation port 101 by the circulation pump, entering the tower from the first circulation port 101 to continue the reaction. This cycle continues until a sample from the lower section is qualified, at which point the circulation is closed, and the qualified material is discharged through outlet 43. Then, in the production stage: waste acid continuously enters the reactor through inlet 102, and catalyst and oxygen are also continuously input. The oxidized qualified material is continuously discharged through outlet 43, achieving continuous production.

[0049] This embodiment effectively extends the flow path of waste acid by setting several baffles 23, which is beneficial for increasing the gas-liquid contact reaction time and improving the reaction effect. The aeration component can promote the full dispersion of oxygen, allowing the waste acid liquid to fully contact and react with oxygen. After a suitable concentration and temperature gradient is formed in the tower, the material does not need to be repeatedly circulated inside the equipment, and qualified material can be continuously output. Compared with the existing waste acid oxidation device, this application greatly improves the production efficiency. Through modular design, the entire tower body is designed into five parts: upper head assembly, upper cylinder section, lower cylinder section, baffle assembly, and lower head assembly, which is beneficial for the production, transportation, and installation of the device.

[0050] Example 2

[0051] like Figures 1-7 As shown, this embodiment is an improvement on embodiment 1.

[0052] Preferably, the plurality of baffles 23 are perpendicular to the inner wall of the tower cavity; the plurality of baffles 23 are arranged alternately from top to bottom on the inner wall of the tower cavity.

[0053] This embodiment has a total of 12 staggered baffles 23, which can enhance the disturbance of waste acid liquid in the tower, allowing the waste acid liquid to flow laterally multiple times between the baffles 23, effectively extending the travel path of waste acid in the tower, increasing the contact reaction time between waste acid and oxygen, and improving the reaction effect.

[0054] Preferably, the deflector assembly further includes multiple sets of two connecting rods 22; the deflector plate 23 is bow-shaped; the deflector plate 23 has a notch on its arc edge; the deflector plate 23 is engaged with the connecting rod 22 through the notch.

[0055] This embodiment features a set of two connecting rods 22. The bow-shaped baffle 23, secured to the connecting rod 22 via its arc-shaped apex notch, reduces the gap between the baffle 23 and the inner wall of the tower cavity. This allows the waste acid to flow fully through the baffle 23 as it descends from the top, reducing dead zones and promoting full contact and reaction between the material and oxygen, thus improving the space utilization of the oxidation tower. The special design of the bow-shaped baffle 23 alters the fluid direction, increases turbulence, reduces dead zones, and ensures full contact and reaction between the material and oxygen. The area of ​​the baffle 23 must be carefully considered in relation to the tower space; an excessively large angle and space will negate its baffle function, while an excessively small space will affect flow velocity and production efficiency.

[0056] Preferably, the central angle of the arc edge of the baffle 23 is 200°-240°.

[0057] Specifically, the radius of the baffle arc edge is slightly smaller than the radius of the section circle of the inner cavity of the tower body, and the baffle with a central angle of 200°-240° can be coordinated with the space of the tower body, which plays a role of baffle and does not affect the flow rate, thereby improving the production efficiency.

[0058] Preferably, the connecting rod 22 is provided with a triangular rib plate 231 and three cross beams 221 corresponding to the baffle 23; the baffle 23 is fixedly connected to the connecting rod 22 through the triangular rib plate 231; and the cross beam 221 is perpendicular to and connected with the connecting rod 22.

[0059] Specifically, the triangular rib plate 231 is a commonly used reinforcing tool with strong stability. The baffle 23 is fixed on the connecting rod 22 by the triangular rib plate 231, which has excellent impact resistance and carrying capacity, and can improve the local rigidity and carrying capacity of the baffle 23. Meanwhile, the cross beams 221 are horizontally arranged on the top end, bottom end and center line of the baffle assembly, and two connecting rods 22 are fixedly connected by three cross beams 221, which facilitates the simultaneous control of the baffles 23 on the two connecting rods 22, and facilitates the installation of the baffles 23, and makes the baffles 23 more stable and solid in the tower body.

[0060] Preferably, the tower body comprises an upper cylinder section 20 and a lower cylinder section 30; the upper cylinder section 20 is at least one, and the upper cylinder section 20 is arranged above the lower cylinder section 30; when the upper cylinder section 20 is multiple, the multiple upper cylinder sections 20 are arranged in sequence from top to bottom and are all arranged above the lower cylinder section 30.

[0061] The upper end of the upper cylinder section 20 is provided with an upper head 10; the feed inlet 102 and the first circulation inlet 101 are arranged on the upper head 10; the dosing port 31 is arranged on the side wall of the lower cylinder section 30; the lower end of the lower cylinder section 30 is provided with a lower head 40; the aeration assembly, the discharge port 43 and the second circulation inlet 44 are arranged on the lower head 40.

[0062] The existing waste acid oxidation chemical equipment is relatively large, and the present embodiment adopts modular design, and the tower body is divided into two upper cylinder sections 20, one lower cylinder section 30, one upper head 10 and one lower head 40. The two upper cylinder sections 20 are arranged in sequence from top to bottom and are connected by flanges. The lower cylinder section 30 is the same in size and structure as the upper cylinder section 20, but the side wall of the lower cylinder section 30 is further provided with a dosing port 31 and a liquid level port 103. The lower end of the upper head 10 is provided with a short connection 11, the short connection 11 is connected to the top end of the upper cylinder section 20 through a flange 12, the bottom end of the upper cylinder section 20 is connected to the top end of the lower cylinder section 30 through a flange 12, and the bottom of the lower cylinder section 30 is connected to the lower head 40 through a flange 12.

[0063] More specifically, the lower end cap 40 has three spare ports 107, which, together with the air inlet 42 and the discharge port 43, form a circumferential arrangement with the second circulation port 44 as the center; the upper end cap has two spare ports 107, which, together with the feed port, liquid level port 103, rupture port 104, pressure gauge port 105, and exhaust port 106, form a circumferential arrangement with the first circulation port 101 as the center. The spare ports 107 are used to improve the flexibility of the oxidation tower unit and expand the application of the equipment. If there are changes in the process, or if there are new materials entering or leaving the unit, or if new instruments need to be installed, the spare ports 107 can be used.

[0064] Each module in this application is relatively small, which facilitates modular production, transportation, installation, and maintenance of the equipment, thereby enhancing its market prospects. By adjusting the number of upper cylinder sections 20, different design capacities can be obtained, which helps to meet the production needs of different occasions.

[0065] Preferably, one side of the inner wall of the cylindrical section is provided with an inner column 21; the inner column 21 is parallel to and abuts against the connecting rod 22; the baffle plate 23 is welded to the connecting rod 22 as a whole through the notch, and then snapped into the inner column 21 through the notch, and connected as a whole through the connecting plate 223, the sealing plate 222 and the hexagonal head threaded bolt 224.

[0066] Example 3

[0067] like Figures 1-7 As shown, this embodiment is an improvement on embodiment 1.

[0068] Preferably, the plurality of baffles 23 are perpendicular to the inner wall of the tower cavity; the plurality of baffles 23 are arranged alternately from top to bottom on the inner wall of the tower cavity.

[0069] This embodiment has 11 staggered baffles 23, which can enhance the disturbance of waste acid liquid in the tower, so that the waste acid liquid can flow laterally multiple times between the baffles 23, effectively prolonging the travel path of waste acid in the tower, increasing the contact reaction time between waste acid and oxygen, and improving the reaction effect.

[0070] Preferably, the baffle assembly further includes multiple sets of two connecting rods 22; the baffle plate 23 is arc-shaped; the baffle plate 23 has a notch on its arc edge; the baffle plate 23 is welded to the connecting rod 22 through the notch.

[0071] The embodiment welds the baffle 23 through the gap of the arc top end on the connecting rod 22, which can reduce the gap space between the baffle 23 and the side wall of the inner cavity of the tower body, so that the waste acid liquid can fully pass through the baffle 23 when flowing down from the top end, reduce the dead zone, and promote the full contact reaction of the material and oxygen. The special design of the baffle 23 can change the flow direction of the fluid, increase the degree of turbulence, reduce the flow dead zone, and make the material and oxygen fully contact and react.

[0072] Preferably, the central angle of the arc edge of the baffle 23 is 200°-240°.

[0073] Specifically, the radius of the arc edge of the baffle is slightly smaller than the radius of the section circle of the inner cavity of the tower body, and the baffle with a central angle of 200°-240° can be coordinated with the space of the tower body, which not only plays a role in baffling, but also does not affect the flow rate, thereby improving the production efficiency.

[0074] Preferably, the connecting rod 22 is provided with a triangular rib plate 231 and three cross beams 221 corresponding to the baffle 23; the baffle 23 is fixedly connected with the connecting rod 22 through the triangular rib plate 231; and the cross beam 221 is perpendicular to and connected with the connecting rod 22.

[0075] Specifically, the triangular rib plate 231 is a commonly used reinforcing tool with strong stability. The baffle 23 is fixed on the connecting rod 22 by using the triangular rib plate 231, which has excellent impact resistance and carrying capacity, and can improve the local rigidity and carrying capacity of the baffle 23. Meanwhile, the cross beams 221 are horizontally arranged on the top end, the bottom end and the center line of the baffle assembly, and the two connecting rods 22 are fixedly connected by using the three cross beams 221, which facilitates the simultaneous control of the baffles 23 on the two connecting rods 22, and facilitates the installation of the baffles 23, and makes the baffles 23 more stable and solid in the tower body.

[0076] Preferably, the tower body comprises an upper cylinder section 20 and a lower cylinder section 30; the upper cylinder section 20 is at least one, and the upper cylinder section 20 is arranged above the lower cylinder section 30; when the upper cylinder section 20 is multiple, the multiple upper cylinder sections 20 are arranged in sequence from top to bottom, and are all arranged above the lower cylinder section 30.

[0077] The upper end of the upper cylinder section 20 is provided with an upper head 10; the feed inlet 102 and the first circulation inlet 101 are arranged on the upper head 10; the dosing inlet 31 is arranged on the side wall of the lower cylinder section 30; the bottom end of the lower cylinder section 30 is provided with a lower head 40; the aeration assembly, the discharge outlet 43 and the second circulation inlet 44 are arranged on the lower head 40.

[0078] The upper cylinder section 20 is designed as one section according to requirements, the lower cylinder section 30 is consistent with the upper cylinder section 20 in size and structure, but the side wall of the lower cylinder section 30 is further provided with a dosing port 31 and a liquid level port 103, the dosing port 31 is arranged on the lower cylinder section 30. The lower end of the upper head 10 is provided with a short circuit 11, the short circuit 11 is connected with the top end of the upper cylinder section 20 through a flange 12, the bottom end of the upper cylinder section 20 is connected with the top end of the lower cylinder section 30 through the flange 12, and the bottom of the lower cylinder section 30 is connected with the lower head 40 through the flange 12.

[0079] More specifically, the lower head 40 is provided with three standby ports 107, which are arranged in a circumferential direction with the second circulating port 44 as the center together with the gas inlet port 42 and the discharge port 43; the upper head is provided with two standby ports 107, which are arranged in a circumferential direction with the first circulating port 101 as the center together with the feeding port, the liquid level port, the bursting port 104, the pressure gauge port 105 and the exhaust port 106. The standby ports 107 are used to improve the flexibility of the oxidation tower device, expand the use of the equipment, change the process, or install new instruments, and can use the standby ports 107.

[0080] Each module of the present application is relatively small, which is beneficial to the modular production, transportation, installation and maintenance of the device, and improves the market promotion prospect of the device.

[0081] Preferably, the side wall of the inner cavity of the tower body is provided with a cylinder section inner column 21; the cylinder section inner column 21 is parallel to the connecting rod 22; the baffle assembly is clamped with the cylinder section inner column 21 through the gap, and is connected as a whole through the connecting plate 223, the sealing plate 222 and the hexagonal head threaded bolt 224.

[0082] Preferably, the aeration assembly comprises a gas inlet port 42 and a microporous aerator 41; the gas inlet port 42 is arranged at the bottom end of the tower body, and the microporous aerator 41 is located at the bottom of the inner cavity of the tower body and communicates with the gas inlet port 42.

[0083] Oxygen is input from the gas inlet port 42, dispersed by the microporous aerator 41, and fully contacted with waste acid to occur oxidation reaction, thereby improving the oxidation efficiency.

[0084] Preferably, the top end of the tower body is provided with a bursting port 104 and an exhaust port 106, the bursting port 104 and the exhaust port 106 are used to maintain the safe pressure state in the tower body.

[0085] The exhaust port 106 can timely discharge the excess gas pressure, and the bursting port 104 is provided with a bursting disc, which is broken rapidly when the internal pressure of the tower body reaches a predetermined value, so as to release the overpressure, thereby protecting the oxidation tower and personnel safety.

[0086] Preferably, the side wall of the cylinder section is provided with at least one group of monitoring ports, the monitoring ports comprise at least one of a sampling port 24, a sight glass port 27 and a temperature port 28; the top end of the tower body is provided with a pressure gauge port 105.

[0087] When the waste acid is oxidized, the related parameters in the oxidation reaction process need to be monitored to ensure that the materials after the reaction are qualified. Two groups of monitoring ports are provided in the embodiment. Specifically, as shown in Figure 1 and Figure 2 , the side walls of the upper cylinder section 20 and the lower cylinder section 30 are each provided with a sampling port 24, a sight glass port 27, a temperature port 28, and a manhole 25. The manhole 25 can be used for personnel to enter and exit the equipment to facilitate the installation, maintenance, and safety inspection of the components. A reinforcing ring 29 for enhancing the rigidity and strength of the cylinder is welded in the middle of the upper cylinder section 20, and an ear-type support 26 is provided at an upper position in the middle to facilitate installation and fixation. The sampling port 24 can sample the waste acid in the reaction for checking whether the materials are qualified. A thermometer is placed in the temperature port 28 for checking the reaction temperature in the tower body. A pressure gauge is placed in the pressure gauge port 105 for checking the pressure in the tower body.

[0088] It can be understood that the above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and some modifications and improvements can be made, which are all within the scope of protection of the present application. Therefore, any equivalent transformation and modification within the scope of the claims of the present application should be included in the scope of the claims of the present application.

Claims

1. A tower-type iron-containing waste acid oxidation reactor, characterized in that, The application relates to a tower body and a circulating pump; a dosing opening (31) is arranged on the tower body; a feeding opening (102) and a first circulating opening (101) are arranged at the top end of the tower body; a baffle assembly is arranged in the tower body; the baffle assembly comprises a plurality of baffle plates (23), the baffle plates (23) form baffle reaction channels in the tower body; an oxygen aeration assembly, a discharging opening (43) and a second circulating opening (44) are arranged at the bottom end of the tower body; the inlet of the circulating pump is communicated with the second circulating opening (44), and the outlet of the circulating pump is communicated with the first circulating opening (101). The baffle plates (23) are perpendicular to the side walls of the tower body; the baffle plates (23) are arranged in a staggered mode from top to bottom on the side walls of the tower body.

2. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 1, characterized in that, The baffle assembly further comprises at least one connecting rod group; the connecting rod group comprises two connecting rods (22); the baffle plate (23) is in an arc shape; the baffle plate (23) is provided with a notch on the arc edge; the baffle plate (23) is welded with the connecting rod (22) through the notch.

3. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 2, characterized in that, The central angle of the arc edge of the baffle plate (23) is 200-240 degrees.

4. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 3, characterized in that, The connecting rod (22) is provided with a triangular rib plate (231) for reinforcing the baffle plate (23) and corresponding to the baffle plate (23); the baffle plate (23) is fixedly connected with the connecting rod (22) through the triangular rib plate (231); the connecting rod (22) is connected through at least three cross beams (221); the cross beam (221) is perpendicular to the connecting rod (22).

5. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 3, characterized in that, The side of the connecting rod close to the side wall of the tower body is provided with a cylinder inner column (21); the cylinder inner column (21) is clamped with the notch of the baffle assembly, and the cylinder inner column (21) is parallel to the connecting rod (22).

6. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 3, characterized in that, The oxygen aeration assembly comprises an air inlet (42) and a microporous aerator (41); the air inlet (42) is arranged at the bottom end of the tower body; the microporous aerator (41) is located at the bottom of the inner cavity of the tower body and is communicated with the air inlet (42).

7. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 1, characterized in that, The top end of the tower body is provided with a burst opening (104) and an exhaust opening (106), and the burst opening is used for mounting a burst disc.

8. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 1, characterized in that, The tower body comprises an upper cylinder section (20) and a lower cylinder section (30); the upper cylinder section (20) is at least one, and the upper cylinder section (20) is arranged above the lower cylinder section (30); when the upper cylinder section (20) is multiple, the multiple upper cylinder sections (20) are arranged in sequence from top to bottom and are all arranged above the lower cylinder section (30).

9. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 1, characterized in that, The top end of the upper cylinder section (20) is provided with an upper head (10); the feeding opening (102) and the first circulating opening (101) are arranged on the upper head (10); the dosing opening (31) is arranged on the side wall of the lower cylinder section (30); the bottom end of the lower cylinder section (30) is provided with a lower head (40); the oxygen aeration assembly, the discharging opening (43) and the second circulating opening (44) are arranged on the lower head (40). ​ 10. The tower type iron-containing spent acid oxidation reaction apparatus according to claim 9, characterized in that, The cylinder side wall is provided with at least one group of monitoring ports, the monitoring ports include a sampling port (24), a sight glass port (27) and a temperature port (28); the top end of the tower body is provided with a pressure gauge port (105) for installing a pressure gauge.

Images