A device for improving the performance of desulfurized gypsum

Abstract

The utility model discloses a kind of desulfurization gypsum performance promotion devices, it is related to limestone-gypsum method flue gas desulfurization technical field.It includes monitoring sensing unit, control cabinet, execution adjusting unit and linkage installation frame, monitoring sensing unit includes laser particle size analyzer, chloride ion on-line analyzer and slurry densitometer;Execution adjusting unit includes gypsum cyclone component, frequency conversion dehydration adjusting component, dynamic flushing adjusting component;Gypsum cyclone component includes gypsum cyclone;Frequency conversion dehydration adjusting component includes vacuum belt dehydrator, steam-water separator and frequency conversion vacuum pump;Dynamic flushing adjusting component includes flushing water tank, flushing water pump and regulating valve;Linkage installation frame includes mainframe and control cabinet installation platform;The utility model integrates monitoring sensing unit, control cabinet, execution adjusting unit in same rack, avoid the connection defect of independent equipment, reduce 30% floor space, installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of limestone-gypsum flue gas desulfurization technology, and more specifically, it is a device for improving the performance of desulfurized gypsum. Background Technology

[0002] Limestone-gypsum flue gas desulfurization technology, as the mainstream technology for controlling SO2 emissions in coal-fired power plants, achieves compliant flue gas emissions but also generates a large amount of desulfurization gypsum industrial byproducts. These byproducts can be recycled into building materials such as cement retarders, dry-mixed mortar, and paper-faced gypsum board; however, their utilization efficiency and high-value potential are highly dependent on product quality. Currently, the dehydration efficiency and final quality of desulfurized gypsum are influenced by a combination of multiple factors, among which chloride ions (Cl...)... - The two major problems of enrichment and fluctuation in slurry particle morphology have become the core bottlenecks restricting the high-value utilization of desulfurized gypsum. The main factors leading to low utilization efficiency, low dewatering efficiency and poor final quality of desulfurized gypsum are as follows: 1. The overall structure has low integration, with the vortex, rinsing, and dewatering systems set up independently, which takes up a large area and is difficult to install and maintain.

[0003] 2. Cl - The content fluctuates drastically: Cl - It mainly dissolves in the water attached to the gypsum, and its content is significantly positively correlated with the water content. In actual working conditions, Cl - The content can fluctuate drastically within the range of 35-2000 mg / kg, far exceeding the Class II standard (Cl) in GB / T21371-2017 "Flue Gas Desulfurization Gypsum". - ≤1000mg / kg) and Grade I (Cl) - ≤300mg / kg) requirement, if Cl - Excessive content directly prevents gypsum from being used in high-value-added fields such as building materials.

[0004] 3. Poor adaptability of traditional dewatering equipment: Existing vacuum belt dewatering machines adopt a "fixed parameter rinsing + passive dewatering" design, which leads to a technical dilemma when facing fluctuations in the quality of the upstream slurry: high Cl - Under operating conditions, increasing the rinsing water volume will prolong the dehydration cycle, causing the moisture content to rise to over 12%; decreasing the rinsing water volume will... - The removal rate is insufficient, and the product qualification rate is only 50%-60%.

[0005] 4. Disconnection between pretreatment and dewatering equipment: As a key pretreatment device before dewatering, the gypsum hydrocyclone has fixed parameters such as the size of the sand settling nozzle and the number of units in operation. These parameters cannot be dynamically adjusted according to the dewatering needs of the downstream. As a result, when the proportion of fine particles (particle size <15μm) exceeds 30%, the frequency of filter cloth clogging increases by 2-3 times, further deteriorating the dewatering efficiency.

[0006] In summary, existing technologies have low overall structural integration, require a large footprint, lack coordinated control equipment for the entire "cyclone separation-dehydration-washing" process, and cannot achieve the desired balance between gypsum moisture content and Cl. - "Dual stability" control of content.

[0007] Therefore, in order to improve the performance and resource utilization rate of desulfurized gypsum, it is necessary to develop a performance enhancement device based on desulfurized gypsum with an integrated intelligent control structure. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and to provide a device for improving the performance of desulfurized gypsum.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows: a desulfurized gypsum performance enhancement device, characterized in that it includes a monitoring and sensing unit, a control cabinet, an execution and adjustment unit, and a linkage installation frame; the monitoring and sensing unit includes a laser particle size analyzer, an online chloride ion analyzer, and a slurry density meter; the execution and adjustment unit includes a gypsum cyclone assembly, a frequency conversion dewatering adjustment assembly, and a dynamic flushing adjustment assembly. The gypsum hydrocyclone assembly includes multiple gypsum hydrocyclones connected in parallel. The variable frequency dehydration regulating component includes a vacuum belt dehydrator, a steam-water separator, and a variable frequency vacuum pump; the dynamic flushing regulating component includes a flushing water tank, a flushing water pump, and a regulating valve. The linkage installation frame includes a main frame and a control cabinet mounting platform. The main frame is a steel structure frame welded from H-beams. From top to bottom, the main frame is provided with a vortex assembly mounting beam, a dewatering assembly mounting platform, and a dynamic flushing adjustment assembly placement area. The gypsum vortex assembly is mounted on the vortex assembly mounting beam, the frequency conversion dewatering adjustment assembly is mounted on the dewatering assembly mounting platform, and the dynamic flushing adjustment assembly is placed in the dynamic flushing adjustment assembly placement area. The control cabinet mounting platform is a water platform welded from angle steel, fixed to one side of the main frame. The control cabinet mounting platform is provided with control cabinet fixing bolts, and the control cabinet is mounted on the control cabinet mounting platform. The absorption tower is connected to the feed pipe of the gypsum hydrocyclone via a gypsum slurry pump, and the discharge pipe of the gypsum hydrocyclone is connected to the dewatering inlet of the vacuum belt dewatering machine; the vacuum belt dewatering machine is connected to the rinsing water tank via a steam-water separator and a frequency conversion vacuum pump in sequence, and the dewatering outlet of the vacuum belt dewatering machine is connected to the gypsum storage tank; the rinsing water tank is connected to the vacuum belt dewatering machine via a rinsing water pump and a regulating valve in sequence. The laser particle size analyzer is installed in the feed pipe of the gypsum cyclone assembly; the online chloride ion analyzer and the slurry density meter are installed at the dewatering inlet of the vacuum belt dewatering machine. The control cabinet receives data from the laser particle size analyzer to adjust the gypsum cyclone assembly, receives data from the online chloride ion analyzer to adjust the dynamic rinsing assembly, and receives data from the slurry density meter to adjust the frequency conversion dewatering assembly.

[0010] In the above technical solution, the monitoring and sensing unit also includes a near-infrared moisture content meter and a portable chloride ion analyzer, which are installed at the dehydration outlet of the frequency conversion dehydration adjustment component; The control cabinet receives data from the near-infrared moisture meter and the portable chloride ion analyzer every 10 minutes and compares the data with the target value.

[0011] In the above technical solution, the laser particle size analyzer is sealed to the feed pipe of the gypsum hydrocyclone assembly via a flange, and monitors the particle size distribution of the gypsum slurry entering the gypsum hydrocyclone assembly in real time; the online chloride ion analyzer and the slurry density meter are fixed to the frame of the variable frequency dewatering and regulating assembly via a bracket; the online chloride ion analyzer has a detection range of 0-20000 mg / L and an accuracy of ±1%, and acquires the chloride ion concentration of the slurry entering the variable frequency dewatering and regulating assembly in real time. - Concentration; the detection range of the slurry density meter is 1.0-1.5 g / cm³. 3 Accuracy ±0.001g / cm 3 Real-time acquisition of slurry Cl entering the variable frequency dewatering regulating component - Solid content.

[0012] In the above technical solution, the near-infrared moisture meter and the portable chloride ion analyzer are connected to the frame of the frequency conversion dehydration adjustment component via a slide rail, thereby monitoring the moisture content and chloride ion content of the final gypsum product in real time. - content.

[0013] In the above technical solution, the gypsum hydrocyclone assembly includes 2-4 parallel gypsum hydrocyclones and a backup hydrocyclone linkage structure; The inlet and outlet valves of the gypsum hydrocyclone are electric butterfly valves, DN200, with a pressure rating of 1.0MPa. The sand settling nozzle of the gypsum hydrocyclone adopts a threaded connection quick-disassembly structure. The electric butterfly valve is connected to the control cabinet through a wire to realize automatic opening and closing. The sand settling nozzle has a threaded connection structure, with an external thread on the outside of the sand settling nozzle and an internal thread on the inside of the bottom flow port of the gypsum hydrocyclone. The sand settling nozzle and the bottom flow port of the gypsum hydrocyclone are quickly connected by threads. The backup hydrocyclone linkage structure includes a pressure transmitter and a linkage control circuit. The pressure transmitter is installed on the feed pipe of the gypsum hydrocyclone. When the pressure transmitter detects a pressure > 0.6 MPa, the electric butterfly valve of the backup gypsum hydrocyclone is automatically opened through the linkage control circuit.

[0014] In the above technical solution, the dynamic flushing adjustment component further includes a water source switching valve and a liquid level sensor; the adjustment valve is an electric adjustment valve, DN50, with an adjustment range of 0-10m. 3 The regulating valve is connected to the control cabinet via a wire to achieve automatic flow regulation; the water source switching valve is a three-way structure, with one end connected to the fresh water pipe, one end connected to the circulating water pipe, and one end connected to the inlet of the flushing water tank. The water source switching valve is connected to the control cabinet via a wire to achieve automatic water source switching; the liquid level sensor is installed on the inner wall of the flushing water tank and connected to the control cabinet via a wire. When the liquid level is <1 / 3, an alarm is triggered.

[0015] In the above technical solution, the frequency conversion dehydration adjustment component also includes a vacuum sensor; The drive end of the vacuum belt dewatering machine is connected to the variable frequency belt drive motor via a coupling. The variable frequency belt drive motor is connected to the control cabinet via a wire to achieve speed adjustment from 0.8 to 2.0 m / min. The power supply end of the variable frequency vacuum pump is connected to the frequency converter. The frequency converter is connected to the control cabinet via a wire to achieve frequency adjustment from 40 to 60 Hz. The vacuum degree sensor is installed on the vacuum chamber of the vacuum belt dewatering machine and is connected to the control cabinet via a wire.

[0016] Compared with the prior art, this utility model has the following advantages.

[0017] 1) Structural integration; This utility model integrates the monitoring and sensing unit, control cabinet, and execution and adjustment unit into the same rack, avoiding the connection defects of independent equipment, reducing the floor space by 30%, and making installation convenient; 2) The adjustment is convenient; the sand settling nozzle of this utility model adopts a quick-disassembly threaded structure, and the replacement time is less than 10 minutes, which improves efficiency by 80% compared with the traditional welded structure; the electric valve and the frequency conversion motor realize automatic adjustment without manual operation; 3) This utility model optimizes the pretreatment at the source; this utility model incorporates the gypsum cyclone assembly into the intelligent control system, and reduces filter cloth clogging by optimizing the particle size distribution, thereby improving the efficiency and service life of the dewatering machine.

[0018] 4) Performance stabilization; This invention acquires data in real time through a dedicated monitoring structure and dynamically adjusts the execution structure accordingly, which can stabilize the gypsum moisture content at 8%-10% with a 100% pass rate; 5) Excellent engineering adaptability; This utility model can be directly installed in the existing desulfurization system without modifying the main equipment, with a high return on investment. It is particularly suitable for solving the problem of gypsum quality fluctuation caused by factors such as changes in coal type and seasonality (winter antifreeze). Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a structural diagram of the linkage installation frame.

[0021] Among them, 100-monitoring sensor unit, 110-laser particle size analyzer, 120-chloride ion online analyzer, 130-slurry density meter, 140-near-infrared moisture meter, 150-portable chloride ion analyzer, 200-control cabinet, 300-actuator and regulating unit, 310-gypsum hydrocyclone assembly, 311-gypsum hydrocyclone, 3111-electric butterfly valve, 3112-sand settling nozzle, 3113-overflow pipe, 312-standby hydrocyclone linkage structure, 3121-pressure transmitter, 3122-linkage control circuit, 320-frequency conversion dewatering regulating assembly, 321-vacuum belt dewatering machine. 322-Air-water separator, 323-Variable frequency vacuum pump, 324-Vacuum sensor, 330-Dynamic flushing adjustment component, 331-Flushing water tank, 332-Flushing water pump, 333-Regulating valve, 334-Water source switching valve, 335-Level sensor, 400-Linkage mounting frame, 410-Main frame, 411-Swirl assembly mounting beam, 412-Dewatering assembly mounting platform, 413-Dynamic flushing adjustment component placement area, 420-Control cabinet mounting platform, 500-Absorption tower, 510-Gypsum slurry pump, 600-Gypsum silo, 710-Return water tank, 720-Return water pump. Detailed Implementation

[0022] The following detailed description, in conjunction with the accompanying drawings, illustrates the implementation of this utility model. However, these descriptions do not constitute a limitation of the present utility model and are merely illustrative. Furthermore, the advantages of this utility model will become clearer and easier to understand through this description.

[0023] Referring to the accompanying drawings, a desulfurized gypsum performance enhancement device includes a monitoring and sensing unit 100, a control cabinet 200, an execution and adjustment unit 300, and a linkage mounting frame 400. The monitoring and sensing unit 100 includes a laser particle size analyzer 110, an online chloride ion analyzer 120, and a slurry density meter 130. The execution and adjustment unit 300 includes a gypsum cyclone assembly 310, a frequency conversion dewatering adjustment assembly 320, and a dynamic flushing adjustment assembly 330. The gypsum cyclone assembly 310 includes multiple gypsum cyclones 311 connected in parallel; The variable frequency dehydration regulating component 320 includes a vacuum belt dehydrator 321, a steam-water separator 322, and a variable frequency vacuum pump 323; the dynamic flushing regulating component 330 includes a flushing water tank 331, a flushing water pump 332, and a regulating valve 333. The linkage installation frame 400 includes a main frame 410 and a control cabinet installation platform 420. The main frame 410 is a steel structure frame welded from H-beams. From top to bottom, the main frame 410 is provided with a vortex component installation beam 411, a dewatering component installation platform 412, and a dynamic flushing adjustment component placement area 413. The gypsum vortex component 310 is installed on the vortex component installation beam 411, the frequency conversion dewatering adjustment component 320 is installed on the dewatering component installation platform 412, and the dynamic flushing adjustment component 330 is placed in the dynamic flushing adjustment component placement area 413. The control cabinet installation platform 420 is a water platform welded from angle steel, fixed to one side of the main frame 410. The control cabinet installation platform 420 is provided with control cabinet fixing bolts, and the control cabinet 200 is installed on the control cabinet installation platform 420. The cyclone assembly mounting beam 411 has a load-bearing capacity of ≥500kg; the distance between the dewatering assembly mounting platform 412 and the ground is 1.2m; and the control cabinet mounting platform 420 has a height of 1.5m. The absorption tower 500 is connected to the feed pipe of the gypsum hydrocyclone 311 via the gypsum slurry pump 510, and the discharge pipe of the gypsum hydrocyclone 311 is connected to the dewatering inlet of the vacuum belt dewatering machine 321. The vacuum belt dewatering machine 321 is connected to the rinsing water tank 331 via the steam-water separator 322 and the variable frequency vacuum pump 323 in sequence, and the dewatering outlet of the vacuum belt dewatering machine 321 is connected to the gypsum storage 600. The rinsing water tank 331 is connected to the vacuum belt dewatering machine 321 via the rinsing water pump 332 and the regulating valve 333 in sequence. The laser particle size analyzer 110 is installed in the feed pipe of the gypsum cyclone assembly 310; the chloride ion online analyzer 120 and the slurry density meter 130 are installed at the dewatering inlet of the vacuum belt dewatering machine 321. The control cabinet 200 receives data from the laser particle size analyzer 110 to adjust the gypsum cyclone assembly 310, receives data from the online chloride ion analyzer 120 to adjust the dynamic flushing adjustment assembly 330, and receives data from the slurry density meter 130 to adjust the frequency conversion dewatering adjustment assembly 320.

[0024] The monitoring and sensing unit 100 also includes a near-infrared moisture meter 140 and a portable chloride ion analyzer 150, which are located at the dehydration outlet of the frequency conversion dehydration regulating component 320. The control cabinet 200 receives data from the near-infrared moisture meter 140 and the portable chloride ion analyzer 150 every 10 minutes and compares the data with the target value.

[0025] The laser particle size analyzer 110 is sealed to the feed pipe of the gypsum cyclone assembly 310 via a flange, and monitors the particle size distribution of the gypsum slurry entering the gypsum cyclone assembly 310 in real time; the online chloride ion analyzer 120 and the slurry density meter 130 are fixed to the frame of the frequency conversion dewatering regulating assembly 320 via a bracket; the online chloride ion analyzer 120 has a detection range of 0-20000 mg / L and an accuracy of ±1%, and acquires the chloride ion concentration of the slurry entering the frequency conversion dewatering regulating assembly 320 in real time. - Concentration; the slurry density meter 130 has a detection range of 1.0-1.5 g / cm³. 3 Accuracy ±0.001g / cm 3 Real-time acquisition of slurry Cl entering the variable frequency dewatering regulating component 320 - Solid content; Laser particle size analyzer 110, chloride ion online analyzer 120 and slurry density meter 130 provide basic data for subsequent control; The near-infrared moisture meter 140 and the portable chloride ion analyzer 150 are connected to the frame of the frequency conversion dehydration regulating component 320 via a slide rail, and monitor the moisture content and chloride ion content of the final gypsum product in real time. - Content, as the core basis for closed-loop feedback. The gypsum hydrocyclone assembly 310 includes 2-4 gypsum hydrocyclones 311 connected in parallel and a backup hydrocyclone linkage structure 312; The inlet and outlet valves of the gypsum hydrocyclone 311 are electric butterfly valves 3111, DN200, with a pressure rating of 1.0MPa. The sand settling nozzle 3112 of the gypsum hydrocyclone 311 adopts a threaded connection for quick disassembly and assembly. The electric butterfly valve 3111 is connected to the control cabinet 200 via a wire to achieve automatic opening and closing. The sand settling nozzle 3112 has a threaded connection structure, with external threads on the outside and internal threads on the inside of the underflow port of the gypsum hydrocyclone 311. The sand settling nozzle 3112 and the underflow port of the gypsum hydrocyclone 311 are quickly connected via threads. The sand settling nozzle 3112 can be selected in sizes of 15cm, 20cm, and 25cm. The backup hydrocyclone linkage structure 312 includes a pressure transmitter 3121 and a linkage control line 3122. The pressure transmitter 3121 is installed on the feed pipe of the gypsum hydrocyclone 311. When the pressure transmitter 3121 detects a pressure > 0.6 MPa (overload), the electric butterfly valve 3111 of the backup gypsum hydrocyclone 311 is automatically opened through the linkage control line 3122.

[0026] The dynamic flushing adjustment assembly 330 also includes a water source switching valve 334 and a liquid level sensor 335; the adjustment valve 333 is an electric adjustment valve, DN50, with an adjustment range of 0-10m. 3 / h, regulating valve 333 is connected to control cabinet 200 via wire to realize automatic flow regulation; the water source switching valve 334 is a three-way structure, one end is connected to fresh water pipe 3341, one end is connected to circulating water pipe 3341 (such as wet electric flushing water), and the other end is connected to the inlet of flushing water tank 331. The water source switching valve 334 is connected to control cabinet 200 via wire to realize automatic water source switching; the liquid level sensor 335 is installed at 1 / 2 height of the inner wall of flushing water tank 331 and is connected to control cabinet 200 via wire. When the liquid level is <1 / 3, an alarm is triggered.

[0027] The variable frequency dehydration regulating component 320 also includes a vacuum sensor 324; The drive end of the vacuum belt dewatering machine 321 is connected to the variable frequency belt drive motor via a coupling. The variable frequency belt drive motor is connected to the control cabinet 200 via a wire, enabling speed adjustment from 0.8 to 2.0 m / min. The power supply end of the variable frequency vacuum pump 323 is connected to the frequency converter, which is connected to the control cabinet 200 via a wire, enabling frequency adjustment from 40 to 60 Hz. The vacuum sensor 324 is installed on the steam-water separator 322 of the vacuum belt dewatering machine 321. The vacuum sensor 324 is connected to the control cabinet 200 via a wire, monitoring the vacuum level in real time (range -0.06 to -0.09 MPa). When the near-infrared moisture meter 140 detects that the moisture content exceeds the standard, it controls the frequency converter of the variable frequency vacuum pump 323 to increase the frequency and increase the vacuum level, ensuring a balance between dewatering efficiency and product quality.

[0028] In practical use, this utility model relates to the performance improvement and resource utilization of desulfurized gypsum, mainly to address the following issues: 1) The overall structure of existing equipment has low integration; the cyclone, rinsing, and dewatering systems are set up independently, occupying a large area and making installation and maintenance difficult; 2) The equipment lacks adaptability to operating conditions: the existing vacuum belt dewatering machine 321 cannot adapt to the desulfurized slurry Cl - The real-time fluctuations in concentration and particle size distribution adaptively adjust operating parameters, resulting in changes in the moisture content and Cl content of gypsum products. - The content is difficult to meet the standards at the same time, resulting in poor product quality stability; 3) Inefficient use of rinsing water: Traditional fixed-flow rinsing structures lack a scientific control mechanism, and high Cl content is difficult to achieve simultaneously. - Insufficient rinsing, low Cl - Excessive rinsing wastes a lot of water resources and increases the load on high-salt wastewater treatment; 4) Lack of equipment coordination throughout the process: The existing gypsum hydrocyclone 311 and vacuum belt dewatering machine 321 operate independently. The separation effect of the gypsum hydrocyclone 311 does not match the downstream dewatering requirements. Too many fine particles lead to increased filter cloth clogging rate, prolonged dewatering cycle, and increased equipment operation and maintenance costs by 15%-20%; 5) Insufficient control precision: The lack of real-time monitoring and feedback structure makes it impossible to control key indicators (moisture content, Cl-) during the dewatering process. -The dynamic correction of content (of a certain substance) relies on manual adjustment, which leads to a response lag (usually 1-2 hours) and easily results in unqualified products. This utility model adds a monitoring sensor unit 100 and a control cabinet 200, and enables the monitoring sensor unit 100, control cabinet 200, and execution adjustment unit 300 to work together. At the same time, the monitoring sensor unit 100, control cabinet 200, and execution adjustment unit 300 are integrated into the linkage installation frame 400, avoiding the connection defects of independent equipment, reducing the footprint by 30%, and facilitating installation.

[0029] The method of using this utility model includes the following steps: Step 1, Monitoring Trigger: The laser particle size analyzer 110 detects the particle size of the slurry in real time. If the proportion of fine particles is >25%, it triggers the cyclone adjustment; the dewatering inlet monitoring component detects the chloride ion concentration and slurry density, triggering the adjustment of flushing and dewatering parameters; the chloride ion online analyzer 120 and the slurry density meter 130 detect the product moisture content and chloride ion content as feedback basis. Step 2, Execute adjustment: After receiving the monitoring signal, the control cabinet 200 controls the gypsum cyclone assembly 310 to turn on the backup cyclone or replace the sand settling nozzle 3112, controls the dynamic flushing adjustment assembly 330 to adjust the opening of the regulating valve 333 or switch the water source, and controls the variable frequency dewatering adjustment assembly 320 to adjust the motor speed and the frequency of the variable frequency vacuum pump 323. Step 3, closed-loop feedback: The near-infrared moisture meter 140 and the portable chloride ion analyzer 150 transmit data to the control cabinet 200 every 10 minutes. If the moisture content is >10% or the chloride ion content is >300mg / kg, the control cabinet 200 executes step 2 again until the indicators meet the standards.

[0030] Example The desulfurization system of a certain 330MW coal-fired power unit uses a traditional vacuum belt dewatering machine, and the slurry Cl - Concentration fluctuation range 6650-16548 mg / L, gypsum product moisture content fluctuation 8%-14%, Cl - The content fluctuates between 200-1500 mg / kg, and the average annual flushing water consumption is approximately 120,000 m³. 3 The filter cloth should be replaced 3 times per month.

[0031] The desulfurization gypsum performance enhancement device of this utility model is added to the existing system, with the following specific configuration: Monitoring and sensing unit 100: 1 laser particle size analyzer 110, 1 online chloride ion analyzer 120, 1 slurry density meter 130, 1 near-infrared moisture meter 140, 1 portable chloride ion analyzer 150; 1 intelligent control cabinet 200, including PLC controller, 10-inch touch screen, and data storage module, installed in the desulfurization control room; Execution and regulation unit 300: 2 parallel gypsum hydrocyclones 311, equipped with replaceable sand settling nozzles 3112, 1 dynamic flushing regulation component 330, 1 frequency conversion dewatering regulation component 320.

[0032] The operating process of this utility model under different working conditions is as follows: 1) High Cl - Operating Condition Response: Monitoring trigger: Laser particle size analyzer 110 detected Cl - =15000mg / L, transmit signal to control cabinet 200; Execution adjustment: Control cabinet 200 controls the opening of regulating valve 333 of dynamic flushing regulating component 330 to increase from 40% to 85%, thereby increasing the flushing flow rate; controls the belt drive motor speed of vacuum belt dewatering machine 321 in variable frequency dewatering regulating component 320 to decrease from 1.5m / min to 1.2m / min, and the frequency of variable frequency vacuum pump 323 to increase from 50Hz to 52Hz; Feedback Correction: After 10 minutes, the near-infrared moisture meter 140 and the portable chloride ion analyzer 150 detected a moisture content of 9.2% and a chloride ion concentration of 10%. - =285mg / kg, the indicator meets the standard, and the equipment is operating stably.

[0033] 2) Low Cl - Operating condition optimization Monitoring trigger: Laser particle size analyzer 110 detected Cl - =8000mg / L, transmit signal to control cabinet 200; Execution adjustment: Control cabinet 200 controls the regulating valve 333 of dynamic flushing regulating component 330 to reduce the opening to 25% (flow rate 2.5m). 3 / h), and open the water source switching valve 334 to switch to the circulating water pipeline 3341 to use circulating water; control the belt drive motor speed of the vacuum belt dewatering machine 321 in the variable frequency dewatering adjustment component 320 to restore 1.5m / min, and reduce the frequency of the variable frequency vacuum pump 323 to 48Hz. Feedback Correction: After 10 minutes, the near-infrared moisture meter 140 and the portable chloride ion analyzer 150 detected a moisture content of 8.8% and a chloride ion concentration of 10%. - =260mg / kg, meeting the standard, achieving water conservation and reuse.

[0034] Implementation Results: After one month of continuous operation, the desulfurization gypsum performance enhancement device of the unit has achieved remarkable results, realizing water conservation and consumption reduction.

[0035] Product performance: The gypsum has a stable moisture content of 8%-10%, a pass rate of 100%, meets the first-class product standard, and its performance indicators meet the requirements for high value-added utilization.

[0036] Resource consumption: Daily flushing water consumption increased from 330m³ 3 Dropped to 248m 3 This reduces water consumption by 25%; the water recycling rate increases to 30%, saving approximately 30,000 cubic meters of water annually. 3 .

[0037] Equipment maintenance: The frequency of filter cloth clogging has been reduced from 3 times / month to 1 time / month, which has greatly reduced maintenance costs.

[0038] All other unspecified parts belong to the prior art.

Claims

1. A device for improving the performance of desulfurized gypsum, characterized in that: The system includes a monitoring and sensing unit (100), a control cabinet (200), an execution and adjustment unit (300), and a linkage mounting frame (400). The monitoring and sensing unit (100) includes a laser particle size analyzer (110), an online chloride ion analyzer (120), and a slurry density meter (130). The execution and adjustment unit (300) includes a gypsum cyclone assembly (310), a variable frequency dewatering adjustment assembly (320), and a dynamic flushing adjustment assembly (330). The gypsum hydrocyclone assembly (310) includes multiple gypsum hydrocyclones (311) connected in parallel; The variable frequency dehydration regulating component (320) includes a vacuum belt dehydrator (321), a steam-water separator (322), and a variable frequency vacuum pump (323); the dynamic flushing regulating component (330) includes a flushing water tank (331), a flushing water pump (332), and a regulating valve (333); The linkage installation frame (400) includes a main frame (410) and a control cabinet installation platform (420); the main frame (410) is a steel structure frame, welded from H-beams, and the main frame (410) is provided with a vortex component installation beam (411), a dewatering component installation platform (412), and a dynamic flushing adjustment component placement area (413) from top to bottom; the gypsum vortex component (310) is installed on the vortex component installation beam (411), the frequency conversion dewatering adjustment component (320) is installed on the dewatering component installation platform (412), and the dynamic flushing adjustment component (330) is placed in the dynamic flushing adjustment component placement area (413); the control cabinet installation platform (420) is a water platform welded from angle steel, fixed to one side of the main frame (410), and the control cabinet installation platform (420) is provided with control cabinet fixing bolts, and the control cabinet (200) is installed on the control cabinet installation platform (420); The absorption tower (500) is connected to the feed pipe of the gypsum hydrocyclone (311) via the gypsum slurry pump (510), and the discharge pipe of the gypsum hydrocyclone (311) is connected to the dewatering inlet of the vacuum belt dewatering machine (321); the vacuum belt dewatering machine (321) is connected to the rinsing water tank (331) in sequence via the steam-water separator (322) and the variable frequency vacuum pump (323), and the dewatering outlet of the vacuum belt dewatering machine (321) is connected to the gypsum storage tank (600); the rinsing water tank (331) is connected to the vacuum belt dewatering machine (321) in sequence via the rinsing water pump (332) and the regulating valve (333); The laser particle size analyzer (110) is installed in the feed pipe of the gypsum cyclone assembly (310); the chloride ion online analyzer (120) and the slurry density meter (130) are installed in the dewatering inlet of the vacuum belt dewatering machine (321); The control cabinet (200) receives data from the laser particle size analyzer (110) to adjust the gypsum cyclone assembly (310), receives data from the online chloride ion analyzer (120) to adjust the dynamic flushing adjustment assembly (330), and receives data from the slurry density meter (130) to adjust the frequency conversion dewatering adjustment assembly (320).

2. The desulfurized gypsum performance enhancement device according to claim 1, characterized in that: The monitoring and sensing unit (100) also includes a near-infrared moisture meter (140) and a portable chloride ion analyzer (150), which are located at the dehydration outlet of the frequency conversion dehydration regulating component (320). The control cabinet (200) receives data from the near-infrared moisture meter (140) and the portable chloride ion analyzer (150) every 10 minutes and compares the data with the target value.

3. The desulfurized gypsum performance enhancement device according to claim 1, characterized in that: The laser particle size analyzer (110) is sealed to the feed pipe of the gypsum cyclone assembly (310) via a flange, and monitors the particle size distribution of the gypsum slurry entering the gypsum cyclone assembly (310) in real time; the online chloride ion analyzer (120) and the slurry density meter (130) are fixed to the frame of the frequency conversion dewatering regulating assembly (320) via a bracket; the online chloride ion analyzer (120) has a detection range of 0-20000 mg / L and an accuracy of ±1%, and acquires the chloride ion concentration of the slurry entering the frequency conversion dewatering regulating assembly (320) in real time. - Concentration; the slurry density meter (130) has a detection range of 1.0-1.5 g / cm³. 3 Accuracy ±0.001g / cm 3 Real-time acquisition of slurry Cl entering the variable frequency dewatering regulating component (320) - Solid content.

4. The desulfurized gypsum performance enhancement device according to claim 2, characterized in that: The near-infrared moisture meter (140) and portable chloride ion analyzer (150) are connected to the frame of the frequency conversion dehydration adjustment component (320) via a slide rail, and monitor the moisture content and chloride ion content of the final gypsum product in real time. - content.

5. The desulfurized gypsum performance enhancement device according to claim 1, characterized in that: The gypsum cyclone assembly (310) includes 2-4 parallel gypsum cyclones (311) and a backup cyclone linkage structure (312); The inlet and outlet valves of the gypsum hydrocyclone (311) are electric butterfly valves (3111), DN200, with a pressure rating of 1.0MPa. The sand settling nozzle (3112) of the gypsum hydrocyclone (311) adopts a threaded connection quick-disassembly structure. The electric butterfly valve (3111) is connected to the control cabinet (200) through a wire to realize automatic opening and closing. The sand settling nozzle (3112) has a threaded connection structure. The outer side of the sand settling nozzle (3112) is provided with an external thread, and the inner side of the bottom flow port of the gypsum hydrocyclone (311) is provided with an internal thread. The sand settling nozzle (3112) and the bottom flow port of the gypsum hydrocyclone (311) are quickly connected by threads. The backup hydrocyclone linkage structure (312) includes a pressure transmitter (3121) and a linkage control line (3122). The pressure transmitter (3121) is installed on the feed pipe of the gypsum hydrocyclone (311). When the pressure transmitter (3121) detects a pressure > 0.6 MPa, the electric butterfly valve (3111) of the backup gypsum hydrocyclone (311) is automatically opened through the linkage control line (3122).

6. The desulfurized gypsum performance enhancement device according to claim 5, characterized in that: The dynamic flushing adjustment assembly (330) also includes a water source switching valve (334) and a liquid level sensor (335); the adjustment valve (333) is an electric adjustment valve, DN50, with an adjustment range of 0-10m. 3 / h, the regulating valve (333) is connected to the control cabinet (200) via a wire to realize automatic flow regulation; the water source switching valve (334) is a three-way structure, one end is connected to the fresh water pipe, one end is connected to the circulating water pipe (3341), and the other end is connected to the inlet of the flushing water tank (331). The water source switching valve (334) is connected to the control cabinet (200) via a wire to realize automatic water source switching; the liquid level sensor (335) is installed on the inner wall of the flushing water tank (331) and is connected to the control cabinet (200) via a wire. When the liquid level is <1 / 3, an alarm is triggered.

7. The desulfurized gypsum performance enhancement device according to claim 6, characterized in that: The variable frequency dehydration regulating component (320) also includes a vacuum sensor (324); The drive end of the vacuum belt dewatering machine (321) is connected to the variable frequency belt drive motor via a coupling. The variable frequency belt drive motor is connected to the control cabinet (200) via a wire to achieve speed adjustment of 0.8-2.0 m / min. The power supply end of the variable frequency vacuum pump (323) is connected to the frequency converter. The frequency converter is connected to the control cabinet (200) via a wire to achieve frequency adjustment of 40-60 Hz. The vacuum degree sensor (324) is installed on the steam-water separator (322) of the vacuum belt dewatering machine (321). The vacuum degree sensor (324) is connected to the control cabinet (200) via a wire.

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