Automatic temperature control and rapid filling, replacing and cleaning system for autoclave
By introducing automatic temperature control and rapid filling and replacement system into the pressurized kettle, using temperature and pressure sensors and automatic valve control, the problem that the pressurized kettle in the prior art cannot achieve automatic temperature control and rapid replacement and cleaning, and nickel is realized Efficient and precise operation of the cobalt metallurgy process.
Patent Information
- Application Number
- CN202411260687.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2024-12-24
AI Technical Summary
The existing pressurized kettle cannot be automatically controlled and replaced and cleaned during the nickel-cobalt metallurgy process, resulting in long driving time, high fluctuations in the kettle's gentle kettle compression, increasing maintenance and maintenance difficulties, and the cleaning compartment equipment cannot be replaced alone or simultaneously.
An automatic temperature control and quick filling and replacement cleaning system for pressurized kettle is designed, using steam and liquid phase thermometers, pressure transmitters, automatic speed-breaking valves, automatic control valves and other components to realize automatic temperature of the pressurized kettle compartment Control and rapid filling, replacement and cleaning, and manage rapid reaction media through high-pressure pumps and supernatant reservoirs.
It realizes rapid filling, replacement and cleaning of the pressurized tank when opening and stopping, ensures complete leaching of the ore slurry, shortens the opening and stop time, and has the temperature control and cleaning functions of multiple compartments, improving the efficiency and accuracy of the metallurgical process.
Smart Images
Figure CN119177342A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of nonferrous hydrometallurgy and relates to an automatic temperature control and rapid filling, replacement and cleaning system for a pressure kettle. Background Art
[0002] Before the start of the pressure leaching of nickel and cobalt, the pressure leaching slurry is directly pumped into the pressure autoclave because the reaction medium cannot be filled in the pressure autoclave. The reaction atmosphere is insufficient, resulting in incomplete slurry leaching and too long start-up time. In the normal production process, due to changes in slurry concentration, flow rate, oxygen intake, etc., the autoclave temperature and autoclave pressure in the pressure autoclave fluctuate greatly. The existing coil-type temperature control device in the pressure autoclave is prone to internal leakage, which increases the difficulty of maintenance. At the same time, if the stirring equipment and oxygen pipe in a compartment of the pressure autoclave fail, replacement cleaning cannot be performed separately or simultaneously, and water can only be fed from the feed port for progressive replacement cleaning, which takes a long time. Therefore, the present invention provides a pressure autoclave automatic temperature control and rapid filling replacement cleaning system to solve the above defects. Summary of the invention
[0003] The purpose of the present invention is to provide an automatic temperature control and rapid filling, replacement and cleaning system for an autoclave in response to the problems existing in the prior art, thereby solving the problem that the existing autoclave cannot simultaneously have the functions of automatic temperature control and rapid replacement and cleaning, resulting in reduced operating efficiency of the autoclave.
[0004] To this end, the present invention adopts the following technical solutions: The invention discloses an automatic temperature control and rapid filling, replacement and cleaning system for a pressure kettle, comprising a pressure kettle, a supernatant liquid storage tank and a high-pressure pump.
[0005] The autoclave is equipped with a vapor phase thermometer, and the first pressure transmitter is used to detect the vapor phase temperature and pressure during leaching in the autoclave; the leached slurry enters the autoclave from the feed port, and is discharged from the discharge port after leaching in each compartment. Each compartment of the autoclave is equipped with a liquid phase thermometer, a steam branch pipe, and a supernatant branch pipe, and the liquid phase thermometer is used to detect the liquid phase temperature in different compartments.
[0006] Each steam branch pipe is respectively connected to the steam main pipe and is equipped with a first automatic quick-break valve, a first check valve, a first three-way pipe, and a first automatic regulating valve. A third pressure transmitter is arranged on the steam main pipe. Each supernatant branch pipe is respectively connected to the supernatant main pipe and is equipped with a second automatic quick-break valve and a second check valve, and is connected to the steam branch pipe via the first three-way pipe.
[0007] The supernatant liquid main pipe is equipped with a first flow meter, a second pressure transmitter, a second automatic regulating valve, and a second flow meter. The starting end of the supernatant liquid main pipe is connected to the pump outlet valve of the high-pressure pump, and the end is connected to the inlet of the supernatant liquid storage tank; the supernatant liquid storage tank is equipped with a liquid level meter, and the outlet is equipped with a supernatant liquid outlet valve. A second three-way pipe is arranged on the pipeline between the inlet of the high-pressure pump and the supernatant liquid outlet valve, and is connected to the tap water pipeline, and a tap water valve is arranged on the tap water pipeline.
[0008] Furthermore, the first automatic quick-break valve on the steam branch pipe is locked with the liquid phase thermometer on the pressure autoclave, the first pressure transmitter, and the third pressure transmitter on the steam main pipe; when the temperature detected by the liquid phase thermometer is equal to or greater than the minimum temperature specified for pressurized leaching in the corresponding compartment, and the pressure detected by the third pressure transmitter is equal to or less than the first pressure transmitter, the first automatic quick-break valve cannot be opened; when the temperature detected by the liquid phase thermometer is lower than the minimum temperature specified for pressurized leaching in the corresponding compartment, and the pressure detected by the third pressure transmitter is greater than the pressure detected by the first pressure transmitter by more than 0.15MP, the first automatic quick-break valve opens; at the same time, the first automatic regulating valve is opened to start heating the compartment.
[0009] Furthermore, the second automatic quick-break valve on the supernatant branch pipe is locked with the liquid phase thermometer on the pressure autoclave, the first pressure transmitter, and the second pressure transmitter on the supernatant main pipe; when the temperature detected by the liquid phase thermometer is equal to or lower than the minimum temperature specified for pressurized leaching in the corresponding compartment, and the pressure detected by the third pressure transmitter is equal to or lower than the first pressure transmitter, the first automatic quick-break valve cannot be opened; when the temperature detected by the liquid phase thermometer is equal to or higher than the maximum temperature specified for pressurized leaching in the corresponding compartment, and the pressure detected by the third pressure transmitter is higher than the pressure detected by the first pressure transmitter by more than 0.15MP, the first automatic quick-break valve opens and starts to cool down the compartment.
[0010] Furthermore, the first automatic quick-break valve on the steam branch pipe is interlocked with the second automatic quick-break valve on the supernatant branch pipe; when the first automatic quick-break valve is opened, the second automatic quick-break valve cannot be opened; when the second automatic quick-break valve is opened, the first automatic quick-break valve cannot be opened.
[0011] Furthermore, the second automatic regulating valve on the supernatant main pipe is interlocked with the second pressure transmitter; when the pressure detected by the second pressure transmitter is 0.2MP greater than the pressure detected by the first pressure transmitter on the pressure autoclave, the second automatic regulating valve automatically opens and increases its opening as the pressure rises, allowing the remaining supernatant to flow back into the supernatant storage tank.
[0012] Furthermore, the second automatic quick-break valve and the first automatic regulating valve can be opened manually, so that different compartments of the autoclave can be quickly filled or replaced individually or simultaneously according to different situation needs.
[0013] Furthermore, when cleaning different compartments of the autoclave after replacement individually or simultaneously, close the supernatant outlet valve, open the tap water valve, manually open the second automatic quick-break valve and the first automatic regulating valve, and clean different compartments of the autoclave individually or simultaneously.
[0014] The beneficial effects of the present invention are: The present invention can quickly fill, replace and clean the autoclave when it is started and stopped, quickly create or eliminate the reaction atmosphere, completely leach the initial slurry, and shorten the start and stop time. At the same time, the present invention has the functions of temperature control, filling, replacement and cleaning of one or more compartments of the autoclave, thereby realizing precise control of the pressurized leaching process. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the present invention.
[0016] In the figure, 1-pressure autoclave, 2-supernatant storage tank, 3-high-pressure pump, 4-vapor phase thermometer, 5-first pressure transmitter, 6-liquid phase thermometer, 7-steam branch pipe, 8-supernatant branch pipe, 9-first automatic quick-off valve, 10-first check valve, 11-first three-way pipe, 12-first automatic regulating valve, 13-steam main pipe, 14-second automatic quick-off valve, 15-second check valve, 16-supernatant main pipe, 17-first flow meter, 18-second pressure transmitter, 19-second automatic regulating valve, 20-second flow meter, 21-pump outlet valve, 22-liquid level meter, 23-supernatant outlet valve, 24-second three-way pipe, 25-tap water pipeline, 26-tap water valve, 27-feed port, 28-discharge port, 29-third pressure transmitter. DETAILED DESCRIPTION
[0017] The technical solution of the present invention is described below in conjunction with the accompanying drawings and implementation methods.
[0018] like Figure 1 As shown, a pressure autoclave automatic temperature control and rapid filling, replacement and cleaning system comprises a pressure autoclave 1, a supernatant storage tank 2 and a high-pressure pump 3.
[0019] The autoclave 1 is provided with a vapor phase thermometer 4, a first pressure transmitter 5, a feed port 27 and a discharge port 28. The autoclave 1 is provided with a plurality of compartments, each compartment being provided with a liquid phase thermometer 6, a steam branch pipe 7 and a supernatant branch pipe 8; each steam branch pipe 7 is respectively connected to a steam main pipe 13, and is provided with a first automatic quick-break valve 9, a first check valve 10, a first three-way pipe 11 and a first automatic regulating valve 12.
[0020] A third pressure transmitter 29 is provided on the steam main pipe 13 , and each supernatant branch pipe 8 is connected to the supernatant main pipe 16 , and is provided with a second automatic quick-break valve 14 and a second check valve 15 , and is connected to the steam branch pipe 7 via the first three-way pipe 11 .
[0021] The supernatant main pipe 16 is equipped with a first flow meter 17, a second pressure transmitter 18, a second automatic regulating valve 19 and a second flow meter 20. The starting end of the supernatant main pipe 16 is connected to the pump outlet valve 21 of the high-pressure pump 3, and the end is connected to the inlet of the supernatant storage tank 2. The supernatant storage tank 2 is equipped with a liquid level meter 22, and the outlet is equipped with a supernatant outlet valve 23. A second three-way pipe 24 is provided on the pipeline between the inlet of the high-pressure pump 3 and the supernatant outlet valve 23, and is connected to the tap water pipe 25. A tap water valve 26 is arranged on the tap water pipe 25.
[0022] The use process of the present invention is as follows: Step 1: Solution filling: When the autoclave 1 meets the start-up conditions and needs to be filled with solution, the liquid level of the supernatant storage tank 2 is maintained normal, the supernatant outlet valve 23 is opened, the high-pressure pump 3 is started, the pump outlet valve 21 is opened, and then the second automatic quick-break valve 14 and the first automatic regulating valve 12 are manually opened in sequence to fill different compartments of the autoclave 1 simultaneously; when the autoclave 1 reaches the discharge liquid level, the solution filling is completed, the high-pressure pump 3 is shut down, the pump outlet valve 21 and the supernatant outlet valve 23 are closed, and the second automatic quick-break valve 14 and the first automatic regulating valve 12 are switched from manual operation to automatic control state.
[0023] Step 2: Heating and pressurizing: When the pressure vessel 1 is filled with solution, the first automatic regulating valve 12 is opened, at this time, the first automatic quick-break valve 9 is opened, and the steam in the steam main pipe 13 enters different compartments of the pressure vessel 1 through the steam branch pipe 7 to heat and pressurize at the same time; when the temperature detected by the liquid phase thermometer 6 is equal to or greater than the specified minimum temperature for pressurized leaching in the corresponding compartment, the first automatic quick-break valve 9 is automatically closed, and the temperature and pressurization of the pressure vessel 1 are completed. At this time, the second automatic quick-break valve 14 is interlocked and in a closed state, and feeding starts from the feed port 27, and the pressure vessel 1 starts pressurized leaching.
[0024] Step 3: Temperature and pressure control: During the pressure leaching process, when the temperature and pressure of the pressure autoclave 1 are about to be lower than the specified technical conditions, the step 2 procedure is automatically executed; when the temperature and pressure are about to be higher than the specified technical conditions, the high-pressure pump 3 is automatically started, and the second automatic quick-break valve 14 on the supernatant branch pipe 8 is automatically opened, and the supernatant enters the pressure autoclave 1 and starts to cool down; when the temperature detected by the liquid phase thermometer 6 is equal to or lower than the specified minimum temperature for pressure leaching in the corresponding compartment, the second automatic quick-break valve 14 is automatically closed, and the temperature and pressure reduction are completed. At this time, the first automatic quick-break valve 9 is closed.
[0025] Step 4: Slurry replacement: When the autoclave 1 needs to be stopped for maintenance, the second automatic quick-off valve 14 and the first automatic regulating valve 12 are manually opened to quickly replace different compartments of the autoclave 1 individually or simultaneously.
[0026] Step 5: Cleaning the autoclave: When the autoclave 1 is cleaned after replacement, the supernatant outlet valve 23 is closed, the tap water valve 26 is opened, the second automatic quick-off valve 14 and the first automatic regulating valve 12 are manually opened, and different compartments of the autoclave 1 are cleaned separately or simultaneously.
Claims
1. An automatic temperature control and rapid filling, replacement and cleaning system for an autoclave, characterized in that: It comprises a pressure autoclave (1), a supernatant storage tank (2) and a high-pressure pump (3); The autoclave (1) is provided with a vapor phase thermometer (4), a first pressure transmitter (5), a feed port (27) and a discharge port (28). The autoclave (1) is provided with a plurality of compartments, each compartment being provided with a liquid phase thermometer (6), a steam branch pipe (7) and a supernatant branch pipe (8). Each steam branch pipe (7) is respectively connected to a steam main pipe (13) and is provided with a first automatic quick-break valve (9), a first check valve (10), a first three-way valve (11) and a first automatic regulating valve (12); The steam main pipe (13) is provided with a third pressure transmitter (29); each supernatant liquid branch pipe (8) is respectively connected to the supernatant liquid main pipe (16) and is provided with a second automatic quick-break valve (14) and a second check valve (15); and is connected to the steam branch pipe (7) via a first three-way pipe (11); the supernatant liquid main pipe (16) is provided with a first flow meter (17), a second pressure transmitter (18), a second automatic regulating valve (19) and a second flow meter (20); The starting end of the supernatant liquid main pipe (16) is connected to the pump outlet valve (21) of the high-pressure pump (3), and the end is connected to the inlet of the supernatant liquid storage tank (2). The supernatant liquid storage tank (2) is provided with a liquid level meter (22), and the outlet is provided with a supernatant liquid outlet valve (23). A second three-way pipe (24) is provided on the pipeline between the inlet of the high-pressure pump (3) and the supernatant liquid outlet valve (23), and is connected to a tap water pipeline (25). The tap water pipeline (25) is provided with a tap water valve (26).
2. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The first automatic quick-break valve (9) on the steam branch pipe (7) is interlocked with the liquid phase thermometer (6) on the autoclave (1), the first pressure transmitter (5), and the third pressure transmitter (29) on the steam main pipe (13); when the temperature detected by the liquid phase thermometer (6) is equal to or greater than the minimum temperature specified for pressurized leaching in the corresponding compartment, and the pressure detected by the third pressure transmitter (29) is equal to or less than the first pressure transmitter (5), the first automatic quick-break valve (9) cannot be opened.
3. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The second automatic quick-break valve (14) on the supernatant branch pipe (8) is connected and locked with the liquid phase thermometer (6) on the autoclave (1), the first pressure transmitter (5), and the second pressure transmitter (18) on the supernatant main pipe (16); when the temperature detected by the liquid phase thermometer (6) is equal to or less than the minimum temperature specified for pressurized leaching in the corresponding compartment, and the pressure detected by the third pressure transmitter (29) is equal to or less than the first pressure transmitter (5), the first automatic quick-break valve (9) cannot be opened.
4. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The first automatic quick-break valve (9) on the steam branch pipe (7) is interlocked with the second automatic quick-break valve (14) on the supernatant branch pipe (8); when the first automatic quick-break valve (9) is opened, the second automatic quick-break valve (14) cannot be opened, and when the second automatic quick-break valve (14) is opened, the first automatic quick-break valve (9) cannot be opened.
5. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The necessary condition for the first automatic quick-off valve (9) on the steam branch pipe (7) to open is that the pressure detected by the third pressure transmitter (29) on the steam main pipe (13) is greater than the pressure detected by the first pressure transmitter (5) on the autoclave (1) by more than 0.15 MP.
6. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The necessary condition for the second automatic quick-off valve (14) on the supernatant branch pipe (8) to open is that the pressure detected by the second pressure transmitter (18) on the supernatant main pipe (16) is greater than the pressure detected by the first pressure transmitter (5) on the autoclave (1) by more than 0.15 MP.
7. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The second automatic regulating valve (19) on the supernatant main pipe (16) is interlocked with the second pressure transmitter (18), and the high-pressure pump (3) is interlocked with the vapor phase thermometer (4); when the pressure detected by the second pressure transmitter (18) is greater than the pressure detected by the first pressure transmitter (5) on the autoclave (1) by 0.2 MPa, the second automatic regulating valve (19) automatically opens, and the opening degree increases as the pressure rises.
8. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: The second automatic quick-off valve (14) and the first automatic regulating valve (12) are manually opened to quickly fill or replace different compartments of the autoclave (1) individually or simultaneously.
9. The automatic temperature control and rapid filling, replacement and cleaning system for a pressure autoclave according to claim 1, characterized in that: When the different compartments of the autoclave (1) are replaced individually or simultaneously for cleaning, the supernatant outlet valve (23) is closed, the tap water valve (26) is opened, and the second automatic quick-off valve (14) and the first automatic regulating valve (12) are manually opened to clean the different compartments of the autoclave (1) individually or simultaneously.