Double row system of pressurized kettle

Abstract

The utility model discloses a kind of double row material systems of pressure still, belong to chemical metallurgical equipment technical field.The system includes pressure still body, two discharge ports are provided on the pressure still body, and independently connected first discharge pipeline and second discharge pipeline are respectively arranged;First control valve and first filtering device are equipped on the first discharge pipeline;Second control valve and the second filtering device of higher filtering precision are equipped on the second discharge pipeline;Two pipeline ends are all connected with material collecting device;Pressure sensor and liquid level sensor are also equipped on the pressure still body, both are connected with a controller, and controller controls the opening and closing of two control valves according to sensor signal.The utility model is filtered by double channel grading and automatic control, realizes the efficient separation and classified collection of different granularity materials, effectively solves the problem that single path discharge is easy to block, subsequent processing is complex, significantly improves production efficiency, product quality and the stability and continuity of system operation.

Description

Technical Field

[0001] This utility model relates to a pressure vessel, specifically to a pressure vessel discharge system. Background Technology

[0002] In the chemical and metallurgical fields, pressure vessels are widely used as key equipment in hydrometallurgical processes, particularly in oxygen pressure leaching of metals such as nickel, cobalt, and copper. Traditional pressure vessel discharge systems typically employ a single discharge port structure, discharging the reacted slurry to subsequent processing steps via a single pipeline. While simple, this structure has several limitations in practical operation. For example, because the material often contains solid particles of varying sizes, a single discharge method is insufficient for particle size classification, complicating subsequent separation, washing, or further processing steps and affecting the purity and quality of the final product. Furthermore, blockages are prone to occur during discharge, especially under conditions of high solids content, high viscosity, or the presence of fibrous materials. Frequent blockages not only cause production interruptions but also increase equipment maintenance costs and operational risks.

[0003] While some existing technologies have attempted to alleviate clogging by adding auxiliary discharge devices or improving valve structures, they have not fundamentally achieved effective material classification and continuous, stable discharge. Therefore, there is an urgent need for a pressurized autoclave discharge system that is structurally sound, easy to operate, and capable of separating and discharging materials according to their properties, in order to improve overall process efficiency and product quality. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a pressure vessel dual-discharge system. This system can effectively separate and classify materials of different particle sizes and has automated control functions, thereby solving the problems of easy material blockage, complex subsequent processing, and low production efficiency in traditional single-discharge methods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A pressure vessel dual-discharge system includes a pressure vessel body, the key feature of which is that: the pressure vessel body is provided with two discharge ports, namely a first discharge port and a second discharge port; the first discharge port is connected to a first discharge pipe, and the second discharge port is connected to a second discharge pipe independent of the first discharge pipe; a first control valve and a first filter device are sequentially arranged on the first discharge pipe along the material flow direction; a second control valve and a second filter device are sequentially arranged on the second discharge pipe along the material flow direction, and the filtration accuracy of the second filter device is higher than that of the first filter device; the first filter device and the second filter device are filter screens or hydrocyclones.

[0006] Furthermore, the ends of the first discharge pipe and the second discharge pipe are respectively connected to independent material collection devices, which are used to receive materials filtered with different precision.

[0007] Furthermore, the pressure vessel body is also equipped with a pressure sensor for real-time monitoring of its internal pressure and a liquid level sensor for monitoring the material liquid level.

[0008] Furthermore, the system also includes a controller. The signal output terminals of both the pressure sensor and the level sensor are electrically connected to the signal input terminal of the controller. The control output terminal of the controller is electrically connected to the first control valve and the second control valve, respectively. The controller is configured to automatically control the opening, closing, and switching of the first and second control valves according to a preset program based on the received pressure and level signals.

[0009] The beneficial effects of this utility model are as follows: 1. Achieve material grading and classification collection: By setting up two independent discharge pipes and equipping them with filtration devices of different precision, large and small solid particles in the material discharged from the pressure vessel can be effectively separated and introduced into different collection devices, which greatly facilitates the subsequent differentiated and refined processing of materials of different particle sizes and improves the quality of the final product.

[0010] 2. Effectively prevents pipe blockage: The dual-channel design reduces the material flow and velocity burden on a single pipe; the graded filtration avoids the blockage problem that easily occurs when a single filtration device processes particles of different sizes at the same time; the automatic control of the discharge process ensures the timeliness and smoothness of discharge, thereby significantly improving the continuity and stability of system operation.

[0011] 3. High degree of automation, reducing labor costs and operational risks: Through the linkage of pressure sensors, liquid level sensors and controllers, automatic monitoring and intelligent control of the discharge process are realized, reducing manual intervention. This not only reduces the labor intensity and human error of operators, but also avoids the safety risks of personnel operating near high-pressure equipment.

[0012] 4. Reasonable structure and strong practicality: The system has a compact structure and reasonable layout. It can be installed without large-scale modification of the existing pressure vessel body. It is easy to implement, operate and maintain, and has good economic benefits and promotion value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; 1-Pressure vessel body; 2-First discharge port; 3-Second discharge port; 4-First discharge pipe; 5-Second discharge pipe; 6-First control valve; 7-Second control valve; 8-First filter device; 9-Second filter device; 10-Material collection device; 11-Pressure sensor; 12-Level sensor; 13-Controller. Detailed Implementation

[0014] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0015] like Figure 1 As shown, the present invention provides a pressure vessel dual-discharge system, the preferred embodiment of which includes a pressure vessel body 1. Two independent discharge ports are opened at the top or bottom of the pressure vessel body 1, namely a first discharge port 2 and a second discharge port 3.

[0016] The first discharge port 2 is connected to the beginning of the first discharge pipe 4 via a flange connection. Along the material flow direction of the first discharge pipe 4, a first control valve 6 and a first filter device 8 are installed sequentially. In this embodiment, the first control valve 6 is preferably a pneumatic or electric ceramic valve with good wear resistance to adapt to high pressure and slurry scouring. The first filter device 8 can be a metal filter screen or sieve plate filter with a pore size of 20 to 60 mesh (preferably 30 mesh), its main function being to perform preliminary coarse filtration of the discharged material, intercepting and separating larger solid particles.

[0017] The second discharge port 3 is also connected to the beginning of the second discharge pipe 5 via a flange connection. The second discharge pipe 5 is independent of the first discharge pipe 4. Along its material flow direction, a second control valve 7 and a second filter device 9 are installed sequentially. The selection of the second control valve 7 is similar to that of the first control valve 6. The filtration accuracy of the second filter device 9 is significantly higher than that of the first filter device 8. For example, a precision filter screen with a pore size of 100 to 200 mesh (preferably 150 mesh) can be used, or a small hydrocyclone separator can be used. Its function is to perform fine filtration on the material after coarse filtration or the fine particulate material in the vessel, separating out the smaller solid particles.

[0018] At the ends of the first discharge pipe 4 and the second discharge pipe 5, a first material collection device 10a and a second material collection device 10b (collectively referred to as material collection device 10) are respectively connected by pipes, such as collection tanks or transfer tanks, to receive and store materials of different particle sizes discharged from different discharge pipes after graded filtration.

[0019] To achieve automatic control of the discharge process, a pressure sensor 11 is installed at an appropriate location on the top or side wall of the pressure vessel body 1 to detect the working pressure inside the vessel in real time; a level sensor 12 is installed on the inner wall of the vessel body to detect the liquid level of the material in real time. Both the pressure sensor 11 and the level sensor 12 are connected to a controller 13 (e.g., a PLC or DCS control system) via signal cables. The control signal output terminal of the controller 13 is then connected to the actuators of the first control valve 6 and the second control valve 7 via control cables, respectively.

[0020] The working principle and process of this utility model are as follows: After system initialization, controller 13 continuously monitors the data transmitted by pressure sensor 11 and level sensor 12. When the material reaction in the pressure vessel is completed, the liquid level reaches the preset high level and the pressure is within the set working pressure range, controller 13 determines that the discharge conditions are met.

[0021] The material discharge process is divided into two stages: Coarse particle discharge stage: Controller 13 first issues a command to open the first control valve 6, while keeping the second control valve 7 closed. Under pressure, the material inside the vessel is discharged through the first discharge port 2 and the first discharge pipe 4. As it flows through the first filter device 8, larger solid particles are intercepted and separated. The pre-filtered slurry or filtrate then enters the first material collection device 10a. This process continues for a period of time (which can be preset in the controller according to process requirements), or until the liquid level drops to the first preset value.

[0022] Fine particle discharge stage: Subsequently, controller 13 issues a command to close the first control valve 6 and simultaneously open the second control valve 7. The remaining material rich in fine particles is discharged through the second discharge port 3 and the second discharge pipe 5, flowing through the high-precision second filter device 9, where the fine particles are effectively separated. The filtered material enters the second material collection device 10b. This process can continue until the liquid level drops to the low preset value for the end of discharge, after which controller 13 closes the second control valve 7, completing one discharge cycle.

[0023] By using this phased and particle-scale automated material discharge method, this invention not only efficiently completes material discharge, but also realizes automatic grading and classification collection of materials, effectively avoiding pipeline blockage and greatly improving production efficiency and product quality.

[0024] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A pressure vessel dual-discharge system, comprising a pressure vessel body (1), characterized in that: The pressure vessel body (1) is provided with two discharge ports, namely a first discharge port (2) and a second discharge port (3). The first discharge port (2) is connected to a first discharge pipe (4), and the second discharge port (3) is connected to a second discharge pipe (5). The first discharge pipe (4) is provided with a first control valve (6) and a first filter device (8). The second discharge pipe (5) is provided with a second control valve (7) and a second filter device (9), and the filtration accuracy of the second filter device (9) is higher than that of the first filter device (8).

2. The pressure vessel dual discharge system according to claim 1, characterized in that: The ends of the first discharge pipe (4) and the second discharge pipe (5) are respectively connected to material collection devices (10).

3. The pressure vessel dual discharge system according to claim 1, characterized in that: The pressure vessel body (1) is equipped with a pressure sensor (11) for monitoring its internal pressure and a liquid level sensor (12) for monitoring the liquid level of the material.

4. The pressure vessel dual discharge system according to claim 3, characterized in that: It also includes a controller (13), the pressure sensor (11) and the level sensor (12) are both signal connected to the controller (13), the controller (13) is configured to control the opening and closing of the first control valve (6) and the second control valve (7) according to the received pressure signal and level signal.

5. The pressure vessel dual discharge system according to claim 1, characterized in that: The first filter device (8) and the second filter device (9) are filter screens or cyclone separators.

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