Feeding and discharging structure of autoclave

Abstract

The feeding and discharging structure of the autoclave comprises an autoclave body, one end of the autoclave body in the length direction is provided with a plurality of feeding ports, the feeding ports are connected with feeding pipes, the feeding pipes are provided with feeding valves, one side of the autoclave body is provided with a flash drum, the autoclave body is connected with the flash drum through a plurality of discharging devices, and the discharging devices are connected with the flash drum. The discharging device comprises a discharging opening formed in the end, far away from the feeding opening, of the kettle body, the discharging opening is connected with a discharging pipe, the discharging pipe is connected with a pre-flash tank, a buffer tank is arranged on one side of the pre-flash tank, the pre-flash tank is connected with a conveying pipe, the conveying pipe is connected with the top of the buffer tank, and the top of the buffering tank is connected with the discharging opening. One side of the buffer tank is connected with a flash evaporation pipe, the flash evaporation pipe is connected with a flash evaporation groove, and a discharge valve is arranged on the discharge pipe. According to the utility model, the pre-flash tank and the buffer tank are arranged on the discharging device, so that materials are pre-flashed and buffered during discharging, the flow rate of the materials is effectively reduced, the impact force to the valve is reduced, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure kettles and relates to a material feeding and discharging structure of a pressure kettle. Background Art

[0002] The leaching process of a certain production line adopts normal pressure + pressurized leaching process. The leaching tank is the key equipment of the normal pressure leaching system, and the pressure autoclave is the key equipment of the pressurized leaching system. The normal pressure leaching slurry is obtained by normal pressure leaching reaction in the leaching tank, and then enters the pressure autoclave for pressurized leaching reaction to obtain pressurized leaching slurry. After gas-liquid separation in the flash tank of the discharge system, the steam is recycled to the normal pressure leaching system, and the liquid is sent to the thickener for thickening separation. The operation rate of the pressure autoclave is the key to improving the pressure leaching rate of valuable metals.

[0003] At present, the pressure autoclave has a single feed and single discharge, and the discharge system adopts a flash tank buffer tank + flash tank form. The pressurized leaching slurry enters the flash tank directly through the flash tank buffer tank via the discharge pipe, and the pipe used before entering the flash tank buffer tank is a right-angle pipe. Under the erosion of high-temperature and high-pressure acidic slurry, the discharge pipe is often damaged and needs to be replaced regularly. Frequent start and stop can easily cause the feed pipe to be blocked. Therefore, the maintenance of the feed and discharge system affects the operation rate of the pressure autoclave, thereby affecting the pressure leaching rate of valuable metals. Utility Model Content

[0004] The purpose of the new use is to provide a pressure kettle feeding and discharging structure to address the problems in the background technology that the pressure kettle has large hydraulic pressure and fast flow rate during discharging, which easily damages pipelines, valves and other related equipment.

[0005] To this end, the present invention adopts the following technical solutions:

[0006] A feeding and discharging structure of a pressure kettle comprises a kettle body, wherein one end of the kettle body in the length direction is provided with a plurality of feeding ports, the feeding ports are connected with a feeding pipe, the feeding pipe is provided with a feeding valve, a flash tank is provided on one side of the kettle body, the kettle body is connected to the flash tank through a plurality of discharging devices, the discharging device comprises a discharging port arranged at one end of the kettle body away from the feeding port, the discharging port is connected with a discharging pipe, the discharging pipe is connected with a pre-flash tank, a buffer tank is provided on one side of the pre-flash tank, the pre-flash tank is connected with a feeding pipe, the feeding pipe is connected to the top of the buffer tank, a flash pipe is connected on one side of the buffer tank, the flash pipe is connected to the flash tank, and a discharging valve is provided on the discharging pipe.

[0007] Furthermore, a flow meter is provided on the feed pipe.

[0008] Furthermore, there are two discharging devices.

[0009] Furthermore, an exhaust pipe is connected to the top of the pre-flash tank, and the exhaust pipe is connected to the top of the buffer tank.

[0010] Furthermore, a flash valve is provided on the flash pipe.

[0011] Furthermore, a delivery valve is provided on the delivery pipe.

[0012] The beneficial effects of the novel use are: a pre-flash tank is arranged in front of the buffer tank of the discharging device, and the material is pre-flashed for buffering during discharging, which effectively reduces the pressure and flow rate of the material, reduces the impact on subsequent pipelines and valves, and increases the service life of the pipelines and valves; two feed pipes and two discharging devices are arranged, and when one of the discharging devices or the feed pipe needs to be repaired, the material can be discharged through the other discharging device so that the maintenance process does not stop the machine, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic front view of the structure of the utility model;

[0014] Figure 2 It is a schematic top view of the structure of the utility model;

[0015] In the figure, 1-kettle body, 2-feed port, 3-feed pipe, 4-feed valve, 5-flow meter, 6-flash tank, 7-discharge port, 8-discharge pipe, 9-discharge valve, 10-pre-flash tank, 11-buffer tank, 12-feed pipe, 13-feed valve, 14-exhaust pipe, 15-flash pipe, 16-flash valve. DETAILED DESCRIPTION

[0016] The utility model is described in detail below with reference to the accompanying drawings:

[0017] like Figure 1 and 2As shown, a feeding and discharging structure of a pressure kettle comprises a kettle body 1. The kettle body 1 can be an existing conventional pressure kettle. A plurality of feeding ports 2 are arranged at one end of the length direction of the kettle body 1. Specifically, two feeding ports 2 are arranged in this embodiment. The feeding ports 2 are connected with feeding pipes 3. Materials can be transported into the kettle body 1 through the feeding pipes 3. When two feeding pipes 3 are arranged, when one of them is under maintenance, materials can be transported into the kettle body through the other feeding pipe 3 within one year, so that production can continue. A feeding valve 4 and a flow meter 5 are arranged on the feeding pipe 3. The flow meter 5 can detect the flow rate of the material input into the kettle body 1. A flash tank 6 is provided on one side of the kettle body 1. The flash tank 6 can be an existing conventional flash tank. The kettle body 1 is connected to the flash tank 6 through a plurality of discharge devices. In this embodiment, two discharge devices are provided so that when one discharge device is under maintenance, the other discharge device is used for discharge, which is convenient for continuous production. Specifically, the discharge device includes a discharge port 7 provided at one end of the kettle body 1 away from the feed port 2. The discharge port 7 is connected to a discharge pipe 8. The connection method of the discharge pipe 8 can be the conventional connection method of the existing pressure kettle discharge pipe. The discharge pipe 8 is provided with a discharge valve 9. The material pipe 8 is connected to a pre-flash tank 10, which is used to pre-flash the material discharged from the kettle body 1, reduce the pressure of the material, and convert part of the liquid into gas. A buffer tank 11 is provided on one side of the pre-flash tank 10, and the pre-flash tank 10 is connected to a feed pipe 12, which is connected to the top of the buffer tank 11. The liquid after pre-flash can be input into the buffer tank 11 through the feed pipe 12 for buffering, further reducing the flow rate of the liquid. A feed valve 13 is provided on the feed pipe 12. In addition, an exhaust pipe 14 is connected to the top of the pre-flash tank 10, and the exhaust pipe 14 is connected to the top of the pre-flash tank 10. 4 is connected to the top of the buffer tank 11. The gas generated by flash evaporation in the pre-flash tank 10 can be input into the buffer tank 11 through the exhaust pipe 14 to prevent the gas generated by the pre-flash tank 10 from being wasted. A flash pipe 15 is connected to one side of the buffer tank 11. The flash pipe 15 is connected to the flash tank 6. A flash valve 16 is provided on the flash pipe 15. The buffered liquid can be input into the flash tank 6 through the flash pipe 15 for flash evaporation. The pre-flash evaporation of the pre-flash tank 10 and the buffering of the buffer tank 11 can effectively reduce the liquid pressure and increase the service life of the feed valve 13 and the flash valve 16.

[0018] The usage of the utility model is as follows:

[0019] First, the material is conveyed into the kettle body 1 through any one of the feed pipes 3. When the conveyed material needs to be discharged into the flash tank 6, it can be done through any one of the discharge devices. When discharging, it is only necessary to open the discharge valve 9, and convey the material in the kettle body 1 to the pre-flash tank 10 through the discharge pipe 8 for pre-flash evaporation, and convert part of the liquid in the material into gas, which can effectively reduce the pressure of the liquid. Then, the delivery valve 13 is opened to convey the material in the pre-flash tank 10 through the delivery pipe 12 to the buffer tank 11 for buffering to further reduce the flow rate of the material. At the same time, the gas generated by the pre-flash evaporation in the pre-flash tank 10 can be discharged into the buffer tank 11 through the exhaust pipe 14 to prevent gas waste. Finally, the flash valve 16 is opened, and the material in the buffer tank 11 is discharged into the flash tank 6 through the flash pipe 15 for flash evaporation. Since the material flow rate is slowed down, the impact of the material on the flash valve 16 can be effectively reduced, thereby increasing the service life of the flash valve 16. At the same time, the pre-flash evaporation can also reduce the flow rate of the material, thereby increasing the service life of the delivery valve 13.

[0020] The steam generated by the pre-flash evaporation enters the buffer tank 11 and can be discharged into the flash tank 6 through the flash pipe 15, and recycled through the flash tank 6. When one of the discharge devices needs to be repaired, it can be discharged through the other discharge device, so that the maintenance process does not stop the machine, thereby improving production efficiency. In addition, the two discharge devices can be used alternately on a regular basis to reduce equipment wear and increase practical life.

Claims

1. A pressure autoclave feeding and discharging structure, It is characterized in that The invention comprises a kettle body (1), wherein one end of the kettle body (1) in the longitudinal direction is provided with a plurality of feed ports (2), wherein the feed ports (2) are connected to a feed pipe (3), wherein the feed pipe (3) is provided with a feed valve (4), and a flash tank (6) is provided on one side of the kettle body (1), wherein the kettle body (1) is connected to the flash tank (6) via a plurality of discharge devices, wherein the discharge device comprises a discharge port (7) arranged at an end of the kettle body (1) away from the feed port (2), wherein the discharge port (7) is connected to a flash tank (6) and a discharge port (7) is provided at the end of the kettle body (1) away from the feed port (2). A discharge pipe (8) is connected, the discharge pipe (8) is connected to a pre-flash tank (10), a buffer tank (11) is provided on one side of the pre-flash tank (10), the pre-flash tank (10) is connected to a feed pipe (12), the feed pipe (12) is connected to the top of the buffer tank (11), a flash pipe (15) is connected to one side of the buffer tank (11), the flash pipe (15) is connected to the flash tank (6), and a discharge valve (9) is provided on the discharge pipe (8).

2. A pressure autoclave feeding and discharging structure according to claim 1, It is characterized in that The feed pipe (3) is provided with a flow meter (5).

3. The pressure autoclave feeding and discharging structure according to claim 1, It is characterized in that There are two discharging devices.

4. The pressure autoclave feeding and discharging structure according to claim 1, It is characterized in that The top of the pre-flash tank (10) is connected to an exhaust pipe (14), and the exhaust pipe (14) is connected to the top of the buffer tank (11).

5. The pressure autoclave feeding and discharging structure according to claim 1, It is characterized in that The flash pipe (15) is provided with a flash valve (16).

6. The pressure autoclave feeding and discharging structure according to claim 1, It is characterized in that The material delivery pipe (12) is provided with a material delivery valve (13).

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