Device for deep oxidation of yellow lead

Abstract

A device for deep oxidation of yellow lead comprises a feed hopper, an oxidation reactor and a discharge pipe which are sequentially connected with one another from top to bottom, a feed port is formed in the upper end of the feed hopper, and a discharge port is formed in the lower end of the discharge pipe; a valve is arranged on one side, close to the discharge hole, of the lower end of the discharge pipe; the feed hopper and the oxidation reactor are provided with a plurality of mixed gas supply pipes for supplying gas into the feed hopper and the oxidation reactor, the plurality of mixed gas supply pipes are uniformly distributed side by side along the vertical direction, one ends of the plurality of mixed gas supply pipes extend into the feed hopper and the oxidation reactor, and two openings at the other ends of the plurality of mixed gas supply pipes are respectively connected with a cold air source and a hot air source; an air supply pipe for supplying air to the discharging pipe is arranged on the discharging pipe, one end of the air supply pipe extends into the device, and an opening in the other end of the air supply pipe is connected with a cold air source. The device has the advantages of low energy consumption, high oxidation efficiency and freely adjustable oxidation degree, and meets the production requirements of lead oxide with different oxidation degrees.

Description

Technical Field

[0001] The utility model relates to the technical field of deep processing of lead and lead products, in particular to a device for deep oxidation of yellow lead. Background Art

[0002] In the manufacturing process of lead-acid batteries, not only lead oxide powder is needed, but also other lead oxides with different oxidation degrees, such as lead dioxide, lead tetroxide, and even lead oxides between lead oxide and lead tetroxide. At present, the technology for preparing lead oxide (yellow lead) and lead dioxide is quite mature, but the process of controlling the deep oxidation degree of yellow lead to prepare lead oxide with an oxidation degree between lead oxide and lead tetroxide is still relatively unstable. The surface of yellow lead particles needs to be oxidized by contacting with the air entering the reactor at a certain temperature. Therefore, the temperature in the reactor needs to be controlled at the beginning of the reaction. The oxidation process is also an exothermic reaction. As the reaction proceeds, a large amount of heat will be generated in the reactor, causing the temperature in the reactor to continue to rise. The rise in temperature further accelerates the oxidation rate of the lead particles, causing the temperature to rise faster. If the temperature in the reactor is not controlled, the excessively high temperature will cause yellow lead to melt and agglomerate, and even prevent continuous production; in addition, the excessively high temperature also directly affects the oxidation degree. Therefore, in order to produce continuously and stably and obtain lead oxide with stable oxidation degree, the temperature in the reactor must be controlled within the required range, and the more stable the temperature in the reactor, the more stable the oxidation degree; secondly, by controlling different temperatures, lead oxide with different oxidation degrees can be obtained.

[0003] As a device for deep oxidation and rapid cooling of granular yellow lead and irregular granular yellow lead oxide, the granular yellow lead moving bed is widely used in various fields. The utility model patent authorization document with announcement number CN208018584U discloses a granular yellow lead moving bed, which can roll back and forth within a certain range when descending through the auxiliary function of the auxiliary bucket, and can descend evenly, without the phenomenon of uneven distribution of granular yellow lead, thereby improving the efficiency of deep oxidation and cooling of granular yellow lead oxide; the leak hole and the hose on the auxiliary bucket are used in combination, so that the gas entering from the air flow hole can only flow through the leak hole and the hose, and will not be directly discharged from the upper end of the upper moving cylinder, thereby increasing the utilization rate of the gas; however, its structure is complicated, and the temperature in the moving bed is not effectively controlled, resulting in unstable oxidation degree, and lead oxides with different oxidation degrees cannot be obtained. Summary of the invention

[0004] Based on the above-mentioned problem of controlling the deep oxidation degree of yellow lead, the utility model provides a device for deep oxidation of yellow lead.

[0005] The utility model solves the technical problem by adopting a technical solution: a device for deep oxidation of yellow lead, comprising a feed hopper, an oxidation reactor and a discharge pipe which are sequentially connected to each other from top to bottom;

[0006] The upper end of the feed hopper has a feed inlet, and the lower end of the discharge pipe has a discharge outlet;

[0007] A valve is provided at the lower end of the discharge pipe near the discharge port;

[0008] The feed hopper and the oxidation reactor are provided with a plurality of mixed air supply pipes for supplying air to the feed hopper and the oxidation reactor, the plurality of mixed air supply pipes are evenly arranged side by side in the vertical direction, one end of the plurality of mixed air supply pipes extends into the feed hopper and the oxidation reactor, and two openings at the other end are respectively connected to a cold air source and a hot air source;

[0009] The discharge pipe is provided with an air supply pipe for supplying air to the discharge pipe. One end of the air supply pipe extends into the device, and the opening at the other end is connected to a cold air source.

[0010] One end of the mixed air supply pipe is a circular tube and the other end is a straight tube. The circular tube is located in the feed hopper or the oxidation reactor. The straight tube is connected to a branch pipe after passing through. The open end of the straight tube is connected to a cold air source, and the open end of the branch pipe is connected to a hot air source.

[0011] A plurality of mixed air outlets are arranged on the upper and lower end surfaces of the annular tube.

[0012] The center of the circle where the annular tube of the mixing gas supply pipe is located coincides with the center line of the feed hopper and the oxidation reactor.

[0013] One end of the air supply pipe extending into the discharge pipe is in the shape of a vertical hollow cylinder, and there are cooling air outlets on the upper and lower bottoms and sides of the cylinder. The other end of the air supply pipe is also a straight pipe, and the open end of the straight pipe is connected to a cold air source after passing through.

[0014] The straight pipes of the gas supply pipe and the mixed gas supply pipe are both provided with thermocouples for detecting the temperature of the gas in the gas supply pipe.

[0015] The thermocouple on the mixed air supply pipe is arranged between the branch pipe and the annular pipe.

[0016] The upper end of the feed hopper is cylindrical, and the lower end is a truncated cone with a larger upper part and a smaller lower part.

[0017] The feed port on the feed hopper is in the shape of a hollow cylinder, and the dust collecting port is in the shape of a hollow inverted right prism structure.

[0018] The oxidation reactor is in the shape of a hollow cylinder, and the inner diameter of the oxidation reactor is the same as the inner diameter of the frustum at the lower end of the feed hopper.

[0019] The discharge pipe is in the shape of a hollow truncated cone with a larger top and a smaller bottom. The inner diameter of the truncated cone at the upper end of the discharge pipe is the same as the inner diameter of the oxidation reactor.

[0020] The utility model effectively controls the oxidation degree of internal materials by controlling the temperature and air volume of different parts in the device, thereby meeting the production requirements of lead oxides with different oxidation degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is the front view of the utility model;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the cooling air duct of the utility model;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the hybrid air duct of the utility model;

[0025] In the figure: 1. feed hopper; 2. oxidation reactor; 3. discharge pipe; 4. feed port; 5. dust collecting port; 6. valve; 7. air supply pipe; 8. mixed air supply pipe; 9. thermocouple; 10. cooling air outlet; 11. straight pipe; 12. mixed air outlet; 13. branch pipe; 14. discharge port. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0027] like Figure 1 , Figure 2 As shown, the utility model is a device for deep oxidation of yellow lead: the device is installed vertically as a whole, and includes a feed hopper 1, an oxidation reactor 2, and a discharge pipe 3 from top to bottom. The upper end of the feed hopper 1 is equipped with a feed port 4 and a dust collecting port 5, and the discharge pipe 3 is provided with a valve 6. The feed hopper 1 and the oxidation reactor 2 are provided with a mixed air supply pipe 8 extending into the device, and a mixed air supply pipe 8 is provided at the truncated cone portion at the lower end of the feed hopper 1. The upper, middle and lower portions of the oxidation reactor 2 are respectively provided with mixed air supply pipes 8. The center of the circle where the annular tube of the mixed air supply pipe 8 is located coincides with the center line of the feed hopper 1 and the oxidation reactor 2; the other end of the mixed air supply pipe 8 is connected to cold air and hot air; the discharge pipe 3 is provided with an air supply pipe 7 extending into the device, and the other end of the air supply pipe 7 is connected to cold air.

[0028] The feed hopper 3 has a cylindrical upper end and a truncated cone shape with a larger upper part and a smaller lower part at the lower end. The interior is hollow, and a feed port 4 and a dust collecting port 5 are provided on the top. Preferably, the feed port 4 is in the shape of a hollow cylinder, and the dust collecting port 5 is in the shape of a hollow inverted regular prism. The oxidation reactor 2 is connected to the bottom of the feed hopper 1, and is in the shape of a hollow cylinder, and its inner diameter is the same as the inner diameter of the lower truncated cone at the lower end of the feed hopper. The discharge pipe 3 is connected to the bottom of the oxidation reactor 2, and is in the shape of a truncated cone with a larger upper part and a smaller lower part. The interior is hollow, and the inner diameter of the upper truncated cone is the same as the inner diameter of the oxidation reactor. The valve 6 at the bottom of the truncated cone is a quantitative feeding valve. Below the valve is the discharge port 14.

[0029] like Figure 3 As shown, one end of the mixed air supply pipe 8 extending into the device is a hollow annular pipe, with air outlets 12 at the upper and lower ends of the annular pipe, and the other end is a straight pipe 11, which branches out and connects to a branch pipe 13 after passing through, the open end of the straight pipe 11 is connected to a cold air source, and the open end of the branch pipe 13 is connected to a hot air source. The thermocouple on the mixed air supply pipe 8 is arranged between the branch pipe and the annular pipe.

[0030] like Figure 4 As shown, one end of the air supply pipe 7 extending into the discharge pipe 3 is in the shape of a vertical hollow cylinder, and there are air outlets 10 on the upper and lower bottoms and sides of the cylinder. The other end of the air supply pipe 7 is also a straight pipe, and the open end of the straight pipe is connected to a cold air source after passing through.

[0031] Cold air can be provided by a cold air blower (cold air source), and hot air can be provided by a hot air blower (hot air source).

[0032] In another embodiment, a thermocouple 9 is provided in the air supply pipe 7 and the mixed air supply pipe 8 for detecting the temperature of the gas in the air supply pipe. The thermocouple 9 can send a detection signal to the controller, and the controller controls and adjusts the air supply of the cold air source to achieve temperature control. It is a conventional method to control the air supply of the cold air source by the controller after communicating with the controller through the thermocouple acquisition signal, which will not be elaborated in this embodiment.

[0033] Working principle: Please refer to Figure 1 A device for deep oxidation of yellow lead, granular yellow lead enters the feed hopper from the feed port 4, and the air supply pipe 7 of the feed hopper 1 blows hot air to preliminarily dry the material; due to the slow discharge of the discharge pipe 3 at the bottom of the device, the material in the top feed hopper 1 also gradually descends into the oxidation reactor 2, in which the air supply pipes 7 at the upper, middle and lower parts blow hot air to heat and oxidize the material, and the discharge rate is controlled by the bottom valve 6 to ensure that the oxidation degree meets the requirements; after the oxidation is completed, the material descends to the discharge pipe 3, and the mixed air supply pipe 8 in the discharge pipe 3 blows cold air to cool the material; after cooling, the material flows out through the valve 6 and the discharge port 14, and the deep oxidation is completed.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A device for deep oxidation of yellow lead, characterized in that: It comprises a feed hopper (1), an oxidation reactor (2) and a discharge pipe (3) which are connected to each other in sequence from top to bottom; The feed hopper (1) has a feed port (4) at its upper end, and the discharge pipe (3) has a discharge port (14) at its lower end; A valve (6) is provided at the lower end of the discharge pipe (3) near the discharge port (14); The feed hopper (1) and the oxidation reactor (2) are provided with a plurality of mixed air supply pipes (8) for supplying air to the feed hopper (1) and the oxidation reactor (2), the plurality of mixed air supply pipes (8) being evenly distributed side by side in a vertical direction, one end of the plurality of mixed air supply pipes (8) extending into the feed hopper (1) and the oxidation reactor (2), and two openings at the other end being connected to a cold air source and a hot air source respectively; The discharge pipe (3) is provided with an air supply pipe (7) for supplying air to the discharge pipe (3); one end of the air supply pipe (7) extends into the device, and the opening at the other end is connected to a cold air source.

2. The device for deep oxidation of yellow lead according to claim 1, characterized in that: The mixed air supply pipe (8) has a circular tube at one end and a straight tube (11) at the other end. The circular tube is located in the feed hopper (1) or the oxidation reactor (2). The straight tube (11) passes through and branches out to connect to a branch tube (13). The open end of the straight tube (11) is connected to a cold air source, and the open end of the branch tube (13) is connected to a hot air source. A plurality of mixed air outlets (12) are arranged in a circle on the upper and lower end surfaces of the annular tube.

3. A device for deep oxidation of yellow lead according to claim 1 or 2, characterized in that: The center of the circle where the annular tube of the mixing gas supply pipe (8) is located coincides with the center line of the feed hopper (1) and the oxidation reactor (2).

4. The device for deep oxidation of yellow lead according to claim 1, characterized in that: The end of the air supply pipe (7) extending into the discharge pipe (3) is in the shape of a vertical hollow cylinder, and the upper and lower bottoms and sides of the cylinder are provided with cooling air outlets (10). The other end of the air supply pipe (7) is also a straight pipe, and the open end of the straight pipe is connected to a cold air source after passing through.

5. A device for deep oxidation of yellow lead according to claim 1, 2 or 4, characterized in that: The straight pipes of the gas supply pipe (7) and the mixed gas supply pipe (8) are both provided with thermocouples for detecting the temperature of the gas in the gas supply pipe.

6. The device for deep oxidation of yellow lead according to claim 5, characterized in that: The thermocouple on the mixed air supply pipe (8) is arranged between the branch pipe and the annular pipe.

7. The device for deep oxidation of yellow lead according to claim 1, characterized in that: The feed hopper (1) has a cylindrical upper end and a frustum-shaped lower end that is larger at the top and smaller at the bottom.

8. A device for deep oxidation of yellow lead according to claim 1 or 7, characterized in that: The feed port (4) on the feed hopper (1) is in the shape of a hollow cylinder, and the dust collection port (5) is in the shape of a hollow inverted right prism.

9. The device for deep oxidation of yellow lead according to claim 1, characterized in that: The oxidation reactor (2) is in the shape of a hollow cylinder, and the inner diameter of the oxidation reactor (2) is the same as the inner diameter of the frustum at the lower end of the feed hopper (1).

10. The device for deep oxidation of yellow lead according to claim 1, characterized in that: The discharge pipe (3) is in the shape of a hollow truncated cone with a larger top and a smaller bottom. The inner diameter of the truncated cone at the upper end of the discharge pipe (3) is the same as the inner diameter of the oxidation reactor (2).

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