A multi-stage water recovery method and system for steam in a magnesium smelting process

Abstract

The present application relates to the technical field of steam recovery, and discloses a multistage water recovery method and system for steam in a magnesium refining process, which comprises a cooling module, a processing module, a sensor module and a control module. The cooling module comprises a first-stage cooling unit, a second-stage cooling unit and a third-stage cooling unit, and each of the first-stage cooling unit, the second-stage cooling unit and the third-stage cooling unit is provided with a tank, a guide plate, a hollow floating ball, a spraying device, a water collecting pool, a water pump and a pressure relief valve. The control module is electrically connected with the cooling module, the processing module and the sensor module, and comprises an acquisition unit, a judgment unit and a processing unit. The present application realizes full recovery and utilization of steam, filters and processes the recovered water, ensures that the quality of the recovered water meets the requirements for recycling, and improves the recovery rate and the stability of the recovered water through intelligent adjustment.

Description

Technical Field

[0001] This invention relates to the field of steam recovery technology, and more specifically, to a multi-stage water recovery method and system for steam in magnesium smelting processes. Background Technology

[0002] Magnesium smelting processes require high-temperature furnace operations, such as lime kilns or electric furnaces. These high-temperature processes often require steam to provide heat and facilitate chemical reactions, thus generating large amounts of high-temperature steam. A crucial step in magnesium smelting is the calcination of magnesium ore to convert it into magnesium oxide or other intermediate products. During calcination, high-temperature heat sources, such as coal gas or fuel oil, are used to provide the necessary heat. The flue gas produced during calcination often contains significant amounts of water vapor.

[0003] In current technology, water vapor is usually recycled for cooling to achieve the purpose of steam water recovery. However, in production practice, the quality of steam will vary across a wide temperature range, including high, medium and low temperatures, depending on factors such as production process, output and season. Furthermore, the water required for the recovery process is softened water. The water directly recovered through steam water recovery technology contains a large number of magnesium atoms and cannot be used directly.

[0004] Therefore, there is an urgent need for a multi-stage water recovery method and system for steam in magnesium smelting processes to solve the problems existing in the current technology. Summary of the Invention

[0005] In view of this, the present invention proposes a multi-stage water recovery method and system for steam in magnesium smelting process, aiming to solve the problems of insufficient steam recovery and difficulty in utilization in the current magnesium smelting process.

[0006] This invention proposes a multi-stage water recovery system for steam in magnesium smelting processes, comprising:

[0007] The cooling module includes a primary cooling unit, a secondary cooling unit, and a tertiary cooling unit. The primary cooling unit is connected to the secondary cooling unit, and the secondary cooling unit is connected to the tertiary cooling unit. Each of the primary, secondary, and tertiary cooling units is equipped with a tank, a baffle plate, hollow suspended balls, a spray device, a water collection pool, a water pump, and a pressure relief valve. The baffle plate is located inside the tank to form a serpentine steam path. The hollow suspended balls are freely distributed inside the tank and on the baffle plate.

[0008] The processing module is connected to the water collection tank in the cooling module. The processing module is used to filter the recycled water and pass the filtered water into the spray device.

[0009] The sensor module includes a steam temperature sensor, an ambient temperature sensor, and a humidity sensor. The steam temperature sensor is respectively installed at the steam inlet and steam outlet of the tank. The ambient temperature sensor is used to detect the ambient temperature. The humidity sensor is installed at the steam outlet of the tank.

[0010] The control module is electrically connected to the cooling module, the processing module, and the sensor module. The control module includes a data acquisition unit, a judgment unit, and a processing unit.

[0011] The acquisition unit is configured to acquire the steam temperature from the temperature sensor at the steam inlet, and determine the water output per unit time of the spray device based on the steam temperature.

[0012] The acquisition unit is also configured to acquire the temperature of the recovered steam from the temperature sensor at the steam outlet, determine whether to adjust the water output based on the recovered steam temperature, and obtain the adjusted water output.

[0013] When the acquisition unit determines that the water output should be adjusted, the judgment unit is configured to determine whether to speed up the filtration rate of the processing module based on the adjusted water output.

[0014] The judgment unit is also configured to collect humidity data from the humidity sensor and determine whether the steam recovery rate meets the standard based on the humidity data; when the judgment unit determines that the steam recovery rate does not meet the standard, the processing unit determines whether to turn on the refrigeration device to cool the filtered water in the processing module based on the ambient temperature.

[0015] Furthermore, when the data acquisition unit determines the water output per unit time of the spray device based on the steam temperature, it includes:

[0016] The acquisition unit compares the steam temperature W with the first preset steam temperature W1 and the second preset steam temperature W2 respectively. W1 < W2. Based on the comparison result, the water output of the spray device per unit time is determined.

[0017] When W≤W1, the acquisition unit determines the water output of the spray device per unit time as the first preset water output L1;

[0018] When W1 < W ≤ W2, the acquisition unit determines the water output of the spray device per unit time as the second preset water output L2;

[0019] When W2 < W, the acquisition unit determines the water output of the spray device per unit time as the third preset water output L3;

[0020] Where L1 < L2 < L3.

[0021] Furthermore, after determining that the water output per unit time of the spray device is the i-th preset water output Li, i = 1, 2, 3, when the acquisition unit determines whether to adjust the water output based on the temperature of the recovered steam, it includes:

[0022] The acquisition unit compares the steam temperature T with the preset steam temperature threshold Tmax, and determines whether to adjust the water output Li based on the comparison result.

[0023] When T > Tmax, the acquisition unit determines that the steam temperature is too high and the steam has not been cooled sufficiently, and adjusts the water output Li to obtain the adjusted water output Lt.

[0024] When T≤Tmax, the acquisition unit determines that the steam temperature is not high and the steam is sufficiently cooled, so it does not adjust the water output Li, and uses the water output Li as the adjusted water output Lt, i.e., Lt=Li.

[0025] Furthermore, when the acquisition unit determines that the outflow rate Li needs to be adjusted, the acquisition unit is also used to:

[0026] The steam temperature difference ΔT between the steam temperature T and the steam temperature threshold Tmax is collected, where ΔT = T - Tmax. The steam temperature difference ΔT is compared with the first preset steam temperature difference ΔT1 and the second preset steam temperature difference ΔT2, respectively. ΔT1 < ΔT2. The water output Li is adjusted according to the comparison result.

[0027] When ΔT≤ΔT1, the first preset adjustment coefficient A1 is selected to adjust the water output Li, and the adjusted water output Lt is obtained, Lt=Li*A1;

[0028] When ΔT1<ΔT≤ΔT2, the second preset adjustment coefficient A2 is selected to adjust the water output Li, and the adjusted water output Lt is obtained, Lt=Li*A2;

[0029] When ΔT2 < ΔT, the third preset adjustment coefficient A3 is selected to adjust the water output Li, and the adjusted water output Lt is obtained, Lt = Li * A3;

[0030] Where 1 < A1 < A2 < A3 < 1.2.

[0031] Furthermore, when the judgment unit determines whether to accelerate the filtration rate of the treatment module based on the adjusted water output, it includes:

[0032] The judgment unit compares the adjusted water output Lt with the water output threshold Lmax, and determines whether to accelerate the filtration rate of the processing module based on the comparison result, wherein Lmax > L3.

[0033] When Lt > Lmax, the judgment unit determines that the water consumption of the spray device per unit time is large, and the filtration rate of the processing module needs to be accelerated.

[0034] When Lt≤Lmax, the judgment unit determines that the water consumption per unit time of the spray device is appropriate, and there is no need to speed up the filtration rate of the treatment module.

[0035] Furthermore, when the determination unit determines to accelerate the filtering rate of the processing module, it includes:

[0036] The judgment unit collects the water volume difference ΔL between the outflow volume Lt and the water volume threshold Lmax, where ΔL = Lt - Lmax. The judgment unit compares the water volume difference ΔL with a first preset water volume difference ΔL1 and a second preset water volume difference ΔL2, respectively. Based on the comparison results, the mixing rate of the mixing tank in the processing module is increased. The initial mixing rate of the mixing tank is S0.

[0037] When ΔL≤ΔL1, the judgment unit selects the first preset rate adjustment coefficient B1 to adjust the stirring rate of the stirring tank in the processing module, and runs at the adjusted stirring rate S0*B1.

[0038] When ΔL1<ΔL≤ΔL2, the judgment unit selects the second preset rate adjustment coefficient B2 to adjust the stirring rate of the stirring tank in the processing module, and runs at the adjusted stirring rate S0*B2.

[0039] When ΔL2 < ΔL, the judgment unit selects the third preset rate adjustment coefficient B3 to adjust the stirring rate of the stirring tank in the processing module, and runs at the adjusted stirring rate S0*B3.

[0040] Wherein, 1 < B1 < B2 < B3 < 1.5.

[0041] Furthermore, when the judgment unit determines whether the steam recovery rate meets the standard based on the humidity data, it includes:

[0042] The judgment unit compares the humidity data D with the preset humidity threshold Dmax, and judges whether the steam recovery rate meets the standard based on the comparison result;

[0043] When D > Dmax, the judgment unit determines that the steam recovery rate does not meet the standard;

[0044] When D≤Dmax, the judgment unit determines that the steam recovery rate meets the standard.

[0045] Furthermore, when the judgment unit determines that the steam recovery rate is not up to standard, the processing unit compares the ambient temperature H with the preset ambient temperature threshold Hmax, and determines whether to turn on the refrigeration device based on the comparison result, including:

[0046] When H > Hmax, the processing unit determines to turn on the cooling device and collects the difference between the ambient temperature H and the ambient temperature threshold Hmax, ΔH, where ΔH = H - Hmax.

[0047] When H≤Hmax, the processing unit determines that the refrigeration device should not be turned on, and adjusts the steam supply G0 at the steam inlet of the first-stage cooling unit according to the recovery rate difference ΔD, where ΔD=D-Dmax;

[0048] The processing unit compares the recovery rate difference ΔD with a first preset recovery rate difference ΔD1 and a second preset recovery rate difference ΔD2, respectively. ΔD1 < ΔD2, and adjusts the steam supply amount G0 according to the comparison result.

[0049] When ΔD≤ΔD1, the processing unit selects a first preset supply adjustment coefficient C1 to adjust the steam supply G0 and obtains the adjusted steam supply G0*C1.

[0050] When ΔD1<ΔD≤ΔD2, the processing unit selects the second preset supply adjustment coefficient C2 to adjust the steam supply G0, and obtains the adjusted steam supply G0*C2.

[0051] When ΔD2 < ΔD, the processing unit selects a third preset supply adjustment coefficient C3 to adjust the steam supply G0 and obtains the adjusted steam supply G0*C3.

[0052] Among them, 1 > C1 > C2 > C3 > 0.

[0053] Furthermore, when the processing unit determines that the cooling device is turned on, it includes:

[0054] The processing unit compares the ambient temperature difference ΔH with a first preset ambient temperature difference ΔH1 and a second preset ambient temperature difference ΔH2, respectively, where ΔH1 < ΔH2, and determines the cooling power of the refrigeration device based on the comparison results.

[0055] When ΔH≤ΔH1, the processing unit determines the cooling power of the refrigeration device to be the first preset cooling power P1;

[0056] When ΔH1<ΔH≤ΔH2, the processing unit determines the cooling power of the refrigeration device to be the second preset cooling power P2;

[0057] When ΔH2 < ΔH, the processing unit determines that the cooling power of the refrigeration device is the third preset cooling power P3;

[0058] Where 0 < P1 < P2 < P3.

[0059] Compared with existing technologies, the advantages of this invention are as follows: By employing a multi-stage water recovery method and system, it overcomes the problems of insufficient recovery and difficulty in utilization inherent in traditional steam-water recovery technologies. Addressing the variation of steam-water generated in magnesium smelting processes under high, medium, and low temperature conditions, a multi-stage recovery scheme achieves full steam recovery and utilization. Through a multi-stage cooling unit in the cooling module, the steam temperature is effectively reduced, and the recovered water is filtered and treated in the processing module, ensuring that the quality of the recovered water meets the requirements for recycling. Simultaneously, the sensor module monitors steam and environmental parameters in real time, and the control module intelligently adjusts based on the monitoring data, enabling the water output of the spray device to be dynamically adjusted according to the steam temperature, thereby improving the recovery rate and the stability of the recovered water. Furthermore, when the humidity is below the standard, a cooling device can be activated based on the ambient temperature, further improving the quality and efficiency of the recovered water and increasing energy utilization efficiency.

[0060] On the other hand, this application also provides a multi-stage water recovery method for steam in a magnesium smelting process, applied to the aforementioned multi-stage water recovery system for steam in a magnesium smelting process, comprising:

[0061] The steam temperature is collected from the temperature sensor at the steam inlet, and the water output per unit time of the spray device is determined based on the steam temperature.

[0062] Collect the recovered steam temperature from the temperature sensor at the steam outlet, determine whether to adjust the water output based on the recovered steam temperature, and obtain the adjusted water output.

[0063] When it is determined that the water output should be adjusted, it is determined whether to speed up the filtration rate of the processing module based on the adjusted water output.

[0064] Humidity data is collected from the humidity sensor, and the steam recovery rate is determined based on the humidity data. If the steam recovery rate is determined to be below standard, the refrigeration device is activated to cool the filtered water in the processing module based on the ambient temperature.

[0065] It is understood that the multi-stage water recovery method and system for steam in magnesium smelting processes provided in this application have the same beneficial effects, and will not be described in detail here. Attached Figure Description

[0066] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0067] Figure 1 This is a schematic diagram of a multi-stage water recovery system for steam in a magnesium smelting process provided in an embodiment of the present invention;

[0068] Figure 2 This is a functional block diagram of the control module in a multi-stage water recovery system for steam in a magnesium smelting process, provided in an embodiment of the present invention.

[0069] Figure 3 A flowchart of a multi-stage water recovery method for steam in a magnesium smelting process, provided as an embodiment of the present invention.

[0070] Among them, 100 is the primary cooling unit; 101 is the tank; 102 is the baffle plate; 103 is the hollow suspended ball; 104 is the spray device; 105 is the water collection tank; 106 is the water pump; 107 is the pressure relief valve; 108 is the steam inlet; 109 is the steam outlet; 110 is the spray water supply motor; 120 is the external water supply motor; 200 is the secondary cooling unit; 300 is the tertiary cooling unit; 400 is the processing module; 500 is the control module; 510 is the data acquisition unit; 520 is the judgment unit; and 530 is the processing unit. Detailed Implementation

[0071] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0072] In some embodiments of this application, see Figure 1-2 As shown, this embodiment provides a multi-stage water recovery system for steam in a magnesium smelting process, comprising:

[0073] The system includes a cooling module, a processing module 400, a sensor module, and a control module 500. The cooling module comprises a primary cooling unit 100, a secondary cooling unit 200, and a tertiary cooling unit 300. The primary cooling unit 100 is connected to the secondary cooling unit 200, and the secondary cooling unit 200 is connected to the tertiary cooling unit 300. Each of the primary, secondary, and tertiary cooling units is equipped with a tank 101, a baffle plate 102, hollow suspended balls 103, a spray device 104, a water collection tank 105, a water pump 106, and a pressure relief valve 107. The baffle plate 102 is positioned inside the tank 101 to create a serpentine steam path. The hollow suspended balls 103 are freely distributed inside the tank 101 and on the baffle plate 102.

[0074] The processing module 400 is connected to the water collection tank 105 in the cooling module. The processing module 400 is used to filter the recycled water and pass the filtered water into the spray device 104.

[0075] The sensor module includes a steam temperature sensor, an ambient temperature sensor, and a humidity sensor. The steam temperature sensor is installed at the steam inlet 108 and the steam outlet 109 of the tank 101, respectively. The ambient temperature sensor is used to detect the ambient temperature, and the humidity sensor is installed at the steam outlet 109 of the tank 101.

[0076] The control module 500 is electrically connected to the cooling module, the processing module 400, and the sensor module. The control module 500 includes a data acquisition unit 510, a judgment unit 520, and a processing unit 530.

[0077] The acquisition unit 510 is configured to acquire the steam temperature from the temperature sensor at the steam inlet 108 and determine the water output of the spray device 104 per unit time based on the steam temperature.

[0078] The acquisition unit 510 is also configured to acquire the temperature of the recovered steam from the temperature sensor at the steam outlet 109, determine whether to adjust the water output based on the recovered steam temperature, and obtain the adjusted water output.

[0079] When the acquisition unit 510 determines that the water output is to be adjusted, the judgment unit 520 is configured to determine whether to speed up the filtration rate of the processing module 400 based on the adjusted water output.

[0080] The judgment unit 520 is also configured to collect humidity data from the humidity sensor and determine whether the steam recovery rate meets the standard based on the humidity data. When the judgment unit 520 determines that the steam recovery rate does not meet the standard, the processing unit 530 determines whether to activate the cooling device to cool the filtered water in the processing module 400 based on the ambient temperature.

[0081] Specifically, during steam recovery, steam first enters the primary cooling unit 100 of the cooling module through steam inlet 108. After being cooled by the primary cooling unit 100, the steam flows out through steam outlet 109 and then enters the secondary cooling unit 200. The steam then enters the tertiary cooling unit 300. Water sprayed from the spray device 104 in the primary, secondary, and tertiary cooling units further cools the steam. The recovered water flows into the collection tank 105 in each cooling unit and, under the action of the water pump 106, flows into the treatment module 400 for filtration. The filtered water is then supplied to the spray device 104 by the spray water supply motor 110, achieving water recycling. Simultaneously, excess recovered water in the treatment module 400 can be supplied for other uses via the external water supply motor 120. The hollow suspended ball 103 is designed to increase its surface area while maintaining a lightweight structure, allowing it to float in the cooling water. In this way, when the steam passes through the spray water, it comes into contact with the hollow suspended balls 103, increasing the contact area between the steam and water and effectively improving the heat transfer efficiency. By increasing the contact area, the hollow suspended balls 103 help transfer heat from the steam to the cooling water, thereby improving the cooling effect and achieving effective cooling of the steam. The function of the pressure relief valve 107 is to ensure that the internal pressure of the system is within a safe range. When the internal pressure of the system exceeds the preset threshold, the pressure relief valve 107 will automatically open to release the excessive pressure and prevent overpressure from causing equipment damage or safety hazards. The sensor module is responsible for monitoring parameters such as steam temperature, ambient temperature, and humidity, while the control module 500 dynamically adjusts the water output of the spray device 104 and the filtration rate of the treatment module 400 based on the data collected by the sensor module, and determines whether the steam recovery rate meets the standard based on the humidity data. If it does not meet the standard, the refrigeration device will be activated for water cooling based on the ambient temperature.

[0082] Understandably, by using a multi-stage cooling unit to progressively cool the high-temperature magnesium smelting process steam, its temperature can be reduced, thus enabling effective recycling. Filtering the recycled water ensures its quality meets requirements for reuse in the spray device 104, achieving water resource recycling. The sensor module monitors environmental parameters in real time, and the control module 500 intelligently adjusts based on the monitoring data, enabling dynamic and intelligent operation control and improving system stability and efficiency.

[0083] In some embodiments of this application, when the acquisition unit 510 determines the water output of the spray device 104 per unit time based on the steam temperature, the acquisition unit 510 compares the steam temperature W with a first preset steam temperature W1 and a second preset steam temperature W2 respectively, where W1 < W2, and determines the water output of the spray device 104 per unit time based on the comparison result.

[0084] Specifically, when W ≤ W1, the data acquisition unit 510 determines the water output of the spray device 104 per unit time as the first preset water output L1. When W1 < W ≤ W2, the data acquisition unit 510 determines the water output of the spray device 104 per unit time as the second preset water output L2. When W2 < W, the data acquisition unit 510 determines the water output of the spray device 104 per unit time as the third preset water output L3. Wherein, L1 < L2 < L3.

[0085] Understandably, different steam temperature values ​​can be set in each cooling unit to achieve full steam recovery. Setting different water output rates according to preset steam temperature zones utilizes the correlation between steam temperature and required water output. The water output of the spray device 104 is adjusted in real time according to the steam temperature to optimize cooling effect control. By selecting different water output rates based on different steam temperatures, the supply of cooling water can be effectively regulated, ensuring sufficient contact between steam and cooling water, thereby improving cooling efficiency, reducing energy consumption, lowering production costs, and also helping to protect equipment and improve production efficiency.

[0086] In some embodiments of this application, after determining that the water output of the spray device 104 per unit time is the i-th preset water output Li (i = 1, 2, 3), when the acquisition unit 510 determines whether to adjust the water output based on the recovered steam temperature, the acquisition unit 510 compares the steam temperature T with the preset steam temperature threshold Tmax, and determines whether to adjust the water output Li based on the comparison result.

[0087] Specifically, when T > Tmax, the acquisition unit 510 determines that the steam temperature is high and the steam has not been sufficiently cooled, and adjusts the water output Li to obtain the adjusted water output Lt. When T ≤ Tmax, the acquisition unit 510 determines that the steam temperature is not high and the steam has been sufficiently cooled, and does not adjust the water output Li, and uses the water output Li as the adjusted water output Lt, i.e., Lt = Li.

[0088] It is understood that the steam cooled by the primary cooling unit 100, the secondary cooling unit 200, and the tertiary cooling unit 300 are collectively referred to as recovered steam. When the temperature of the recovered steam exceeds a set threshold, the acquisition unit 510 automatically adjusts the water output of the spray device 104 to increase the water output and improve the cooling effect, thereby ensuring that the steam is fully cooled. When the temperature of the recovered steam does not exceed the set threshold, there is no need to adjust the water output, and the current water output is maintained. By adjusting the water output of the spray device 104 in real time according to the temperature of the recovered steam, precise control of the cooling process is achieved, further improving cooling efficiency and stability. By dynamically adjusting the water output, the steam cooling requirements under different temperature conditions can be better adapted, thereby reducing energy consumption and production costs.

[0089] In some embodiments of this application, when the acquisition unit 510 determines that the water output Li should be adjusted, the acquisition unit 510 is further configured to: acquire the steam temperature difference ΔT between the steam temperature T and the steam temperature threshold Tmax, where ΔT = T - Tmax; compare the steam temperature difference ΔT with a first preset steam temperature difference ΔT1 and a second preset steam temperature difference ΔT2, where ΔT1 < ΔT2; and adjust the water output Li according to the comparison result.

[0090] Specifically, when ΔT ≤ ΔT1, the first preset adjustment coefficient A1 is selected to adjust the outlet flow rate Li, obtaining the adjusted outlet flow rate Lt, where Lt = Li * A1. When ΔT1 < ΔT ≤ ΔT2, the second preset adjustment coefficient A2 is selected to adjust the outlet flow rate Li, obtaining the adjusted outlet flow rate Lt, where Lt = Li * A2. When ΔT2 < ΔT, the third preset adjustment coefficient A3 is selected to adjust the outlet flow rate Li, obtaining the adjusted outlet flow rate Lt, where Lt = Li * A3. Where 1 < A1 < A2 < A3 < 1.2.

[0091] Understandably, by monitoring and comparing the difference between the steam temperature and the preset temperature threshold, different adjustment coefficients are selected based on different temperature difference conditions. This allows for increased water output when the steam temperature is high, improving cooling efficiency, and moderately reduced output when the temperature is low, avoiding energy waste. By adjusting the cooling water output based on real-time changes in steam temperature, the system's energy efficiency and stability are further improved. By selecting different adjustment coefficients based on the magnitude of the steam temperature difference, the water output can be flexibly adjusted to meet cooling requirements under different temperature conditions, thus achieving efficient utilization of steam.

[0092] In some embodiments of this application, when the judgment unit 520 determines whether to accelerate the filtration rate of the treatment module 400 based on the adjusted water flow rate, the judgment unit 520 compares the adjusted water flow rate Lt with the water flow rate threshold Lmax, and determines whether to accelerate the filtration rate of the treatment module 400 based on the comparison result, wherein Lmax > L3.

[0093] Specifically, when Lt > Lmax, the judgment unit 520 determines that the water consumption of the spray device 104 per unit time is too high, and the filtration rate of the treatment module 400 needs to be increased. When Lt ≤ Lmax, the judgment unit 520 determines that the water consumption of the spray device 104 per unit time is appropriate, and there is no need to increase the filtration rate of the treatment module 400.

[0094] In some embodiments of this application, when the judgment unit 520 determines the filtration rate of the accelerated processing module 400, the following steps are taken: the judgment unit 520 collects the water volume difference ΔL between the outflow water volume Lt and the water volume threshold Lmax, where ΔL = Lt - Lmax. The judgment unit 520 compares the water volume difference ΔL with a first preset water volume difference ΔL1 and a second preset water volume difference ΔL2, respectively. Based on the comparison results, the stirring rate of the stirring tank in the accelerated processing module 400 is increased, and the initial stirring rate of the stirring tank is S0.

[0095] Specifically, when ΔL≤ΔL1, the judgment unit 520 selects a first preset rate adjustment coefficient B1 to adjust the stirring rate of the mixing tank in the processing module 400, operating at the adjusted stirring rate S0*B1. When ΔL1<ΔL≤ΔL2, the judgment unit 520 selects a second preset rate adjustment coefficient B2 to adjust the stirring rate of the mixing tank in the processing module 400, operating at the adjusted stirring rate S0*B2. When ΔL2<ΔL, the judgment unit 520 selects a third preset rate adjustment coefficient B3 to adjust the stirring rate of the mixing tank in the processing module 400, operating at the adjusted stirring rate S0*B3. Wherein, 1<B1<B2<B3<1.5.

[0096] Understandably, the judgment unit 520 determines whether to accelerate the filtration rate of the treatment module 400 based on the comparison between the adjusted water output and the water output threshold. If the adjusted water output exceeds the water output threshold, it indicates that the spray device 104 uses a large amount of water per unit time, requiring an acceleration of the filtration rate of the treatment module 400 to improve water treatment efficiency. Conversely, if the adjusted water output does not exceed the water output threshold, it indicates that the water consumption of the spray device 104 is appropriate, and there is no need to accelerate the filtration rate of the treatment module 400. The stirring rate of the mixing tank in the treatment module 400 is dynamically adjusted according to the real-time water output to adapt to different treatment needs. By selecting different preset rate adjustment coefficients based on the difference between the water output and the water output threshold, the stirring rate can be adjusted when the treated water volume is too high or too low, maintaining the stable operation of the treatment system and ensuring water treatment efficiency and quality. Intelligent adjustment of the treatment module 400 based on the real-time water volume improves the system's flexibility and adaptability. By dynamically adjusting the stirring rate, the treatment process can be effectively optimized, improving water treatment efficiency and quality, while also helping to reduce energy consumption and equipment maintenance costs.

[0097] In some embodiments of this application, when the judgment unit 520 determines whether the steam recovery rate meets the standard based on the humidity data, the judgment unit 520 compares the humidity data D with the preset humidity threshold Dmax, and determines whether the steam recovery rate meets the standard based on the comparison result.

[0098] Specifically, when D > Dmax, the judgment unit 520 determines that the steam recovery rate does not meet the standard. When D ≤ Dmax, the judgment unit 520 determines that the steam recovery rate meets the standard.

[0099] Specifically, when the judgment unit 520 determines that the steam recovery rate is not up to standard, the processing unit 530 compares the ambient temperature H with a preset ambient temperature threshold Hmax, and determines whether to turn on the refrigeration device based on the comparison result. Specifically, when H > Hmax, the processing unit 530 determines to turn on the refrigeration device and collects the ambient temperature difference ΔH between the ambient temperature H and the ambient temperature threshold Hmax, where ΔH = H - Hmax. When H ≤ Hmax, the processing unit 530 determines not to turn on the refrigeration device and adjusts the steam supply G0 of the steam inlet 108 in the primary cooling unit 100 according to the recovery rate difference ΔD, where ΔD = D - Dmax.

[0100] Specifically, the processing unit 530 compares the recovery rate difference ΔD with a pre-set first preset recovery rate difference ΔD1 and a pre-set second preset recovery rate difference ΔD2. If ΔD1 < ΔD2, the processing unit adjusts the steam supply G0 based on the comparison result. When ΔD ≤ ΔD1, the processing unit 530 selects a first preset supply adjustment coefficient C1 to adjust the steam supply G0, obtaining the adjusted steam supply G0*C1. When ΔD1 < ΔD ≤ ΔD2, the processing unit 530 selects a second preset supply adjustment coefficient C2 to adjust the steam supply G0, obtaining the adjusted steam supply G0*C2. When ΔD2 < ΔD, the processing unit 530 selects a third preset supply adjustment coefficient C3 to adjust the steam supply G0, obtaining the adjusted steam supply G0*C3. Wherein, 1 > C1 > C2 > C3 > 0.

[0101] Understandably, the steam recovery rate is determined by comparing humidity data with a preset threshold. When the humidity exceeds the preset threshold, the judgment unit 520 determines that the steam recovery rate is substandard and triggers the processing unit 530 to perform further operations. In the processing unit 530, the ambient temperature is compared with a preset temperature threshold. If the ambient temperature exceeds the threshold, the cooling device is activated. Then, based on the difference between the humidity data and the preset humidity threshold, the steam supply in the primary cooling unit 100 is adjusted to achieve the target steam recovery rate.

[0102] Specifically, when humidity exceeds a threshold, it indicates insufficient steam recovery. At this point, the decision to activate the refrigeration unit is based on whether the ambient temperature is above the threshold. If the ambient temperature is too high, the refrigeration unit is activated to lower it. If the ambient temperature is low, the refrigeration unit does not need to be activated, but the steam recovery rate is still low. This indicates that the initial steam supply exceeds the allowable threshold. Based on the difference between the humidity data and the preset humidity threshold, the steam supply is adjusted using different preset adjustment coefficients to achieve the target recovery rate. The adjustment coefficients are selected based on the magnitude of the difference, allowing for fine-tuning of the steam supply and optimizing steam recovery efficiency.

[0103] The steam supply is dynamically adjusted based on real-time humidity data and ambient temperature to ensure that the steam recovery rate reaches the preset target value. Timely monitoring and adjustment of environmental conditions can effectively improve steam recovery efficiency, reduce energy consumption, and lower production costs, while also contributing to environmental protection and resource conservation.

[0104] In some embodiments of this application, when the processing unit 530 determines that the refrigeration device is turned on, the processing unit 530 compares the ambient temperature difference ΔH with a first preset ambient temperature difference ΔH1 and a second preset ambient temperature difference ΔH2 respectively, wherein ΔH1 < ΔH2, and determines the refrigeration power of the refrigeration device based on the comparison result.

[0105] Specifically, when ΔH ≤ ΔH1, the processing unit 530 determines the cooling power of the refrigeration device as a first preset cooling power P1. When ΔH1 < ΔH ≤ ΔH2, the processing unit 530 determines the cooling power of the refrigeration device as a second preset cooling power P2. When ΔH2 < ΔH, the processing unit 530 determines the cooling power of the refrigeration device as a third preset cooling power P3. Wherein, 0 < P1 < P2 < P3.

[0106] Understandably, by comparing the ambient temperature difference with two preset thresholds, the processing unit 530 determines the cooling power level of the refrigeration device. Based on real-time changes in ambient temperature, the cooling power of the refrigeration device is flexibly adjusted to meet the ambient temperature requirements. By comparing the ambient temperature difference with preset thresholds, dynamic control of the refrigeration device's power is achieved, enabling it to adaptively provide suitable cooling effects according to actual conditions. Flexible adjustment of cooling power not only effectively reduces energy consumption and operating costs but also ensures system stability and reliability, improving production efficiency and environmental adaptability.

[0107] The above embodiments overcome the problems of insufficient recovery and difficulty in utilization in traditional steam-water recovery technologies through a multi-stage water recovery method and system. Addressing the variation of steam-water generated in magnesium smelting processes under high, medium, and low temperature conditions, a multi-stage recovery scheme achieves full steam recovery and utilization. The multi-stage cooling unit of the cooling module effectively reduces the steam temperature, and the recovered water is filtered and treated in the processing module to ensure that the quality of the recovered water meets the requirements for recycling. Simultaneously, the sensor module monitors steam and environmental parameters in real time, and the control module intelligently adjusts based on the monitoring data, enabling the water output of the spray device to be dynamically adjusted according to the steam temperature, improving the recovery rate and the stability of the recovered water. Furthermore, when the humidity is below the standard, the cooling device can be activated according to the ambient temperature, further improving the quality and efficiency of the recovered water and increasing energy utilization efficiency.

[0108] In another preferred embodiment based on the above embodiments, see [reference] Figure 3 As shown, this embodiment provides a multi-stage water recovery method for steam in a magnesium smelting process, applied to the aforementioned multi-stage water recovery system for steam in a magnesium smelting process, including:

[0109] S100: Collects the steam temperature from the temperature sensor at the steam inlet and determines the water output per unit time of the spray device based on the steam temperature.

[0110] S200: Collects the recovered steam temperature from the temperature sensor at the steam outlet, determines whether to adjust the water output based on the recovered steam temperature, and obtains the adjusted water output.

[0111] S300: When it is determined that the water output should be adjusted, it is determined whether to speed up the filtration rate of the treatment module based on the adjusted water output.

[0112] S400: Collects humidity data from the humidity sensor and determines whether the steam recovery rate meets the standard based on the humidity data; when it is determined that the steam recovery rate does not meet the standard, it determines whether to turn on the refrigeration device to cool the filtered water in the processing module based on the ambient temperature.

[0113] It is understandable that the above embodiments, through a multi-stage water recovery method and system, overcome the problems of insufficient recovery and difficulty in utilization inherent in traditional steam-water recovery technologies. Addressing the phenomenon of steam-water variations under high, medium, and low temperature conditions generated in the magnesium smelting process, a multi-stage recovery scheme is employed to achieve full steam recovery and utilization. The multi-stage cooling units of the cooling module effectively reduce the steam temperature, and the recovered water is filtered and treated in the processing module, ensuring that the quality of the recovered water meets the requirements for recycling. Simultaneously, the sensor module monitors steam and environmental parameters in real time, and the control module intelligently adjusts based on the monitoring data, enabling the water output of the spray device to be dynamically adjusted according to the steam temperature, thereby improving the recovery rate and the stability of the recovered water. Furthermore, when the humidity does not meet the standard, the cooling device can be activated according to the ambient temperature, further improving the quality and efficiency of the recovered water and increasing energy utilization efficiency.

[0114] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0115] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0116] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0117] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A multi-stage water recovery system for steam in magnesium smelting processes, characterized in that, include: The cooling module includes a primary cooling unit, a secondary cooling unit, and a tertiary cooling unit. The primary cooling unit is connected to the secondary cooling unit, and the secondary cooling unit is connected to the tertiary cooling unit. Each of the primary, secondary, and tertiary cooling units is equipped with a tank, a baffle plate, hollow suspended balls, a spray device, a water collection pool, a water pump, and a pressure relief valve. The baffle plate is located inside the tank to form a serpentine steam path. The hollow suspended balls are freely distributed inside the tank and on the baffle plate. The processing module is connected to the water collection tank in the cooling module. The processing module is used to filter the recycled water and pass the filtered water into the spray device. The sensor module includes a steam temperature sensor, an ambient temperature sensor, and a humidity sensor. The steam temperature sensor is respectively installed at the steam inlet and steam outlet of the tank. The ambient temperature sensor is used to detect the ambient temperature. The humidity sensor is installed at the steam outlet of the tank. The control module is electrically connected to the cooling module, the processing module, and the sensor module. The control module includes a data acquisition unit, a judgment unit, and a processing unit. The acquisition unit is configured to acquire the steam temperature from the temperature sensor at the steam inlet, and determine the water output per unit time of the spray device based on the steam temperature. The acquisition unit is also configured to acquire the temperature of the recovered steam from the temperature sensor at the steam outlet, determine whether to adjust the water output based on the recovered steam temperature, and obtain the adjusted water output. When the acquisition unit determines that the water output should be adjusted, the judgment unit is configured to determine whether to speed up the filtration rate of the processing module based on the adjusted water output. The judgment unit is also configured to collect humidity data from the humidity sensor and determine whether the steam recovery rate meets the standard based on the humidity data; when the judgment unit determines that the steam recovery rate does not meet the standard, the processing unit determines whether to turn on the refrigeration device to cool the filtered water in the processing module based on the ambient temperature.

2. The multi-stage water recovery system for steam in magnesium smelting process according to claim 1, characterized in that, When the data acquisition unit determines the water output per unit time of the spray device based on the steam temperature, it includes: The acquisition unit compares the steam temperature W with the first preset steam temperature W1 and the second preset steam temperature W2 respectively. W1 < W2. Based on the comparison result, the water output of the spray device per unit time is determined. When W≤W1, the acquisition unit determines the water output of the spray device per unit time as the first preset water output L1; When W1 < W ≤ W2, the acquisition unit determines the water output of the spray device per unit time as the second preset water output L2; When W2 < W, the acquisition unit determines the water output of the spray device per unit time as the third preset water output L3; Where L1 < L2 < L3.

3. The multi-stage water recovery system for steam in magnesium smelting process according to claim 2, characterized in that, After determining that the water output per unit time of the spray device is the i-th preset water output Li, i=1,2,3, when the acquisition unit determines whether to adjust the water output based on the temperature of the recovered steam, it includes: The acquisition unit compares the recovered steam temperature T with the preset recovered steam temperature threshold Tmax, and determines whether to adjust the output water volume Li based on the comparison result. When T > Tmax, the acquisition unit determines that the steam temperature is too high and the steam has not been cooled sufficiently, and adjusts the water output Li to obtain the adjusted water output Lt. When T≤Tmax, the acquisition unit determines that the steam temperature is not high and the steam is sufficiently cooled, so it does not adjust the water output Li, and uses the water output Li as the adjusted water output Lt, i.e., Lt=Li.

4. The multi-stage water recovery system for steam in magnesium smelting process according to claim 3, characterized in that, When the acquisition unit determines that the water output Li needs to be adjusted, the acquisition unit is further configured to: The steam temperature difference ΔT between the recovered steam temperature T and the recovered steam temperature threshold Tmax is collected, where ΔT = T - Tmax. The steam temperature difference ΔT is compared with the first preset steam temperature difference ΔT1 and the second preset steam temperature difference ΔT2, respectively. ΔT1 < ΔT2. The water output Li is adjusted according to the comparison result. When ΔT≤ΔT1, the first preset adjustment coefficient A1 is selected to adjust the water output Li, and the adjusted water output Lt is obtained, Lt=Li*A1; When ΔT1<ΔT≤ΔT2, the second preset adjustment coefficient A2 is selected to adjust the water output Li, and the adjusted water output Lt is obtained, Lt=Li*A2; When ΔT2 < ΔT, the third preset adjustment coefficient A3 is selected to adjust the water output Li, and the adjusted water output Lt is obtained, Lt = Li * A3; Where 1 < A1 < A2 < A3 < 1.

2.

5. The multi-stage water recovery system for steam in magnesium smelting process according to claim 4, characterized in that, When the judgment unit determines whether to accelerate the filtration rate of the treatment module based on the adjusted water output, it includes: The judgment unit compares the adjusted water output Lt with the water output threshold Lmax, and determines whether to accelerate the filtration rate of the processing module based on the comparison result, wherein Lmax > L3. When Lt > Lmax, the judgment unit determines that the water consumption of the spray device per unit time is large, and the filtration rate of the processing module needs to be accelerated. When Lt≤Lmax, the judgment unit determines that the water consumption per unit time of the spray device is appropriate, and there is no need to speed up the filtration rate of the treatment module.

6. The multi-stage water recovery system for steam in magnesium smelting process according to claim 5, characterized in that, When the determination unit determines to accelerate the filtering rate of the processing module, it includes: The judgment unit collects the water volume difference ΔL between the outflow volume Lt and the water volume threshold Lmax, where ΔL = Lt - Lmax. The judgment unit compares the water volume difference ΔL with a first preset water volume difference ΔL1 and a second preset water volume difference ΔL2, respectively. Based on the comparison results, the mixing rate of the mixing tank in the processing module is increased. The initial mixing rate of the mixing tank is S0. When ΔL≤ΔL1, the judgment unit selects the first preset rate adjustment coefficient B1 to adjust the stirring rate of the stirring tank in the processing module, and runs at the adjusted stirring rate S0*B1. When ΔL1<ΔL≤ΔL2, the judgment unit selects the second preset rate adjustment coefficient B2 to adjust the stirring rate of the stirring tank in the processing module, and runs at the adjusted stirring rate S0*B2. When ΔL2 < ΔL, the judgment unit selects the third preset rate adjustment coefficient B3 to adjust the stirring rate of the stirring tank in the processing module, and runs at the adjusted stirring rate S0*B3. Wherein, 1 < B1 < B2 < B3 < 1.

5.

7. The multi-stage water recovery system for steam in magnesium smelting process according to claim 6, characterized in that, When the judgment unit determines whether the steam recovery rate meets the standard based on the humidity data, it includes: The judgment unit compares the humidity data D with the preset humidity threshold Dmax, and judges whether the steam recovery rate meets the standard based on the comparison result; When D > Dmax, the judgment unit determines that the steam recovery rate does not meet the standard; When D≤Dmax, the judgment unit determines that the steam recovery rate meets the standard.

8. The multi-stage water recovery system for steam in magnesium smelting process according to claim 7, characterized in that, When the judgment unit determines that the steam recovery rate is not up to standard, the processing unit compares the ambient temperature H with the preset ambient temperature threshold Hmax, and determines whether to turn on the refrigeration device based on the comparison result, including: When H > Hmax, the processing unit determines to turn on the cooling device and collects the difference between the ambient temperature H and the ambient temperature threshold Hmax, ΔH, where ΔH = H - Hmax. When H≤Hmax, the processing unit determines not to turn on the refrigeration device, and adjusts the steam supply G0 of the steam inlet in the first-stage cooling unit according to the recovery rate difference ΔD, where ΔD=D-Dmax; The processing unit compares the recovery rate difference ΔD with a first preset recovery rate difference ΔD1 and a second preset recovery rate difference ΔD2, respectively. ΔD1 < ΔD2, and adjusts the steam supply amount G0 according to the comparison result. When ΔD≤ΔD1, the processing unit selects a first preset supply adjustment coefficient C1 to adjust the steam supply G0 and obtains the adjusted steam supply G0*C1. When ΔD1<ΔD≤ΔD2, the processing unit selects the second preset supply adjustment coefficient C2 to adjust the steam supply G0, and obtains the adjusted steam supply G0*C2. When ΔD2 < ΔD, the processing unit selects a third preset supply adjustment coefficient C3 to adjust the steam supply G0 and obtains the adjusted steam supply G0*C3. Among them, 1 > C1 > C2 > C3 > 0.

9. The multi-stage water recovery system for steam in magnesium smelting process according to claim 8, characterized in that, When the processing unit determines that the cooling device is turned on, it includes: The processing unit compares the ambient temperature difference ΔH with a first preset ambient temperature difference ΔH1 and a second preset ambient temperature difference ΔH2, respectively, where ΔH1 < ΔH2, and determines the cooling power of the refrigeration device based on the comparison results. When ΔH≤ΔH1, the processing unit determines the cooling power of the refrigeration device to be the first preset cooling power P1; When ΔH1<ΔH≤ΔH2, the processing unit determines the cooling power of the refrigeration device to be the second preset cooling power P2; When ΔH2 < ΔH, the processing unit determines the cooling power of the refrigeration device to be the third preset cooling power P3; Where 0 < P1 < P2 < P3.

10. A multi-stage water recovery method for steam in a magnesium smelting process, applied to the system described in any one of claims 1-9, characterized in that, include: The steam temperature is collected from the temperature sensor at the steam inlet, and the water output per unit time of the spray device is determined based on the steam temperature. Collect the recovered steam temperature from the temperature sensor at the steam outlet, determine whether to adjust the water output based on the recovered steam temperature, and obtain the adjusted water output. When it is determined that the water output should be adjusted, it is determined whether to speed up the filtration rate of the processing module based on the adjusted water output. Humidity data is collected from the humidity sensor, and the steam recovery rate is determined based on the humidity data. If the steam recovery rate is determined to be below standard, the refrigeration device is activated to cool the filtered water in the processing module based on the ambient temperature.

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