An autonomous deslagging sulfuric acid tank
By introducing a concentration detector and controller into the sulfuric acid tank, the automatic discharge of solid slag is achieved, solving the problem of pipeline blockage caused by the accumulation of solid slag in the concentrated sulfuric acid system and ensuring the safety and stability of production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GROUP NICKEL COBALT CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-24
AI Technical Summary
In existing nickel smelter sulfuric acid systems, concentrated sulfuric acid may contain solid slag, causing solid slag to accumulate in high-level tanks and block acid outlet pipes, requiring manual cleaning and affecting the safety and stability of production.
Design a sulfuric acid tank with autonomous slag discharge, equipped with a concentration detector and controller, to automatically detect the slag content and control the slag discharge valve, thereby achieving automatic discharge of solid slag and avoiding excessive accumulation.
The automatic slag discharge function prevents solid slag from clogging the acid outlet, ensuring the safety and stability of production and guaranteeing its continuity.
Smart Images
Figure CN224548584U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrometallurgical equipment technology, and in particular to a sulfuric acid tank with autonomous slag discharge. Background Technology
[0002] Currently, the sulfuric acid workshop of the nickel smelter has two sulfuric acid production systems: a 700,000-ton sulfuric acid system and a 480,000-ton sulfuric acid system. The 480,000-ton sulfuric acid system transports 93% concentrated sulfuric acid to the outdoor high-level sulfuric acid tank of the 60,000-ton nickel electrolysis plant. The sulfuric acid in the high-level tank then flows by gravity into the indoor acid mixing tank of the 60,000-ton nickel electrolysis plant. During actual production, because the 93% concentrated sulfuric acid from the 480,000-ton system may contain solid slag or solid slag generated during transportation, some solid slag accumulates in the high-level sulfuric acid tank after a period of time, clogging the acid outlet pipes. Workers then need to manually clean the solid slag from the high-level sulfuric acid tank. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a sulfuric acid tank with autonomous slag discharge.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A self-discharging sulfuric acid tank, comprising:
[0006] The tank has an acid outlet at the bottom and an acid inlet and an exhaust outlet at the top.
[0007] The slag discharge port is located at the bottom of the tank.
[0008] The slag discharge valve is installed on the slag discharge port;
[0009] The concentration detector is installed on the side wall of the tank, with its detection end located inside the tank.
[0010] The signal output of the concentration detector is connected to the start / stop control section of the slag discharge valve via a controller.
[0011] The bottom of the trough has a conical structure.
[0012] The top of the tank is equipped with a level gauge port, on which a level gauge is installed.
[0013] An overflow port is provided on the side wall of the tank.
[0014] The beneficial effects of this invention are as follows: This invention delivers concentrated sulfuric acid into the tank via the acid inlet, and then into the acid mixing tank inside the 60,000-ton nickel electrolysis plant via the acid outlet at the bottom of the tank. After a certain production period, the concentrated sulfuric acid will contain solid slag. This solid slag slowly and continuously accumulates near the slag discharge port at the bottom of the tank. Once the concentration detector detects that the slag content reaches 30%, the controller automatically opens the bottom slag discharge valve to discharge the slag. By using this invention, the tank will not accumulate excessive solid slag that could clog the acid outlet and affect production, thus ensuring the safety, stability, and continuity of production. The system includes an acid inlet for feeding sulfuric acid into the tank, an acid outlet for discharging sulfuric acid from the tank, an overflow outlet for overflowing sulfuric acid once the required level has been reached, a level gauge for installing a level gauge to measure the sulfuric acid level, an exhaust outlet for discharging acid mist and other waste gases from the tank, a concentration detector for detecting the content of sediment in the tank, a slag discharge outlet for discharging sediment from the tank, and a slag discharge valve for controlling the discharge of sediment from the tank. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] The components are: 1. Tank body; 2. Acid inlet; 3. Acid outlet; 4. Overflow outlet; 5. Level gauge outlet; 6. Exhaust outlet; 7. Concentration detector; 8. Slag outlet; 9. Slag discharge valve. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0018] like Figure 1 As shown, a sulfuric acid tank with autonomous slag discharge includes: a tank body 1 with an acid outlet 3 at the bottom and an acid inlet 2 and an exhaust outlet 6 at the top; a slag discharge outlet 8 at the bottom of the tank body 1; a slag discharge valve 9 on the slag discharge outlet 8; and a concentration detector 7 mounted on the side wall of the tank body 1, with its detection end located inside the tank body 1. The signal output of the concentration detector 7 is connected to the start / stop control section of the slag discharge valve 9 via a controller. The bottom of the tank body 1 has a conical structure. A level gauge port 5 is located at the top of the tank body 1, on which a level gauge is installed. An overflow outlet 4 is located on the side wall of the tank body 1.
[0019] In this invention, during acid addition, 93% concentrated sulfuric acid produced by the 480,000-ton sulfuric acid system is transported to the outdoor high-level sulfuric acid tank of the 60,000-ton nickel electrolysis plant. It enters tank 1 through inlet 2. Once the required level is reached, measured by the level gauge at level gauge port 5, the sulfuric acid is returned to the low-level tank through overflow port 4. During acid unloading, the sulfuric acid is gravity-fed to the indoor acid mixing tank of the 60,000-ton nickel electrolysis plant through outlet 3 at the bottom. When the slag concentration is detected by concentration detector 7 on tank 1 and reaches 30%, the controller automatically opens the bottom slag discharge valve 9 to discharge the deposited slag. During production, acid mist and other waste gases from tank 1 are discharged through exhaust port 6.
[0020] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A sulfuric acid tank with self-discharging slag, characterized in that, include: The tank (1) has an acid outlet (3) at the bottom and an acid inlet (2) and an exhaust outlet (6) at the top. The slag discharge port (8) is located at the bottom of the tank body (1); A slag discharge valve (9) is installed on the slag discharge port (8); The concentration detector (7) is set on the side wall of the tank (1), and its detection end is set inside the tank (1); The signal output terminal of the concentration detector (7) is connected to the start / stop control section of the slag discharge valve (9) via a controller.
2. The sulfuric acid tank with autonomous slag discharge according to claim 1, characterized in that, The bottom of the trough (1) is a conical structure.
3. The sulfuric acid tank with autonomous slag discharge according to claim 1, characterized in that, The top of the tank (1) is provided with a level gauge port (5), on which a level gauge is installed.
4. A sulfuric acid tank with autonomous slag discharge according to claim 1, characterized in that, An overflow port is provided on the side wall of the tank (1).