Device for detecting the intensity of sulphur fumigation in a sugar cane mill

Abstract

The utility model discloses a cane sugar factory sulfur fumigation intensity detection device, including titration detection jar subassembly, the top of titration detection jar subassembly is provided with the sampling subassembly who is connected with low temperature sulfur combustion furnace, the front side of titration detection jar subassembly is provided with steam generation jar, the titration detection jar subassembly includes the detection jar, the iodine solution jar of fixed connection in the right side of detection jar and the metering peristaltic pump of fixed in the back of detection jar. The scheme can continuously deliver high temperature steam to the detection jar through the booster air pump, can preheat the jar body and disperse the residual gas before detection, utilizes the physical scouring and high temperature sterilization characteristics of steam after detection, quickly decomposes the sulfite crystallization, iodide precipitate and organic attached matter generated in the reaction, avoids the jar body abrasion or clean dead angle caused by traditional mechanical cleaning. And steam and jar inner wall directly contact and form steam film, prevent the reaction liquid drop from hanging wall solidification, steam forms vortex in the process of ascending, can strip the condensate on the top of jar and splash residual.

Description

Technical Field

[0001] This utility model relates to the field of sulfur fumigation intensity testing technology, specifically to a device for testing sulfur fumigation intensity in sugarcane factories. Background Technology

[0002] In the sugarcane sugar mill production process, sulfur fumigation is a core step in the sulfite sugar refining process, achieving clarification, decolorization, and impurity removal through the chemical reaction of sulfur dioxide gas with sugarcane juice. However, traditional sulfur fumigation intensity testing techniques have several drawbacks. Traditional sulfur fumigation intensity testing relies on manual titration, requiring operators to periodically sample and manually titrate iodine solution to calculate the sulfur fumigation intensity. This method is significantly affected by subjective judgment; errors in endpoint determination, reading deviations, and differences in operating rhythm can all lead to fluctuations in test results, failing to meet the precision and stability requirements of industrial production. Traditional testing devices lack automatic cleaning functions, allowing reaction residues (such as iodide precipitates and sulfite crystals) to continuously accumulate on the inner walls of the testing tank and pipelines. This not only corrodes the equipment and shortens its lifespan but also causes secondary reactions between residues and new samples during subsequent tests, creating interference and distorting the data. Therefore, those skilled in the art propose a solution for a sulfur fumigation intensity testing device for sugarcane sugar mills. Summary of the Invention

[0003] The purpose of this utility model is to provide a technical solution for a sulfur fumigation intensity testing device for sugarcane factories, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a titration detection tank assembly, the top of which is provided with a sampling component connected to a low-temperature sulfur combustion furnace, and the front side of which is provided with a steam generator.

[0005] The titration test tank assembly includes a test tank, an iodine solution tank fixedly connected to the right side of the test tank, and a metering peristaltic pump fixed to the rear side of the test tank. The output end of the metering peristaltic pump is connected to a drain pipe that penetrates into the interior of the test tank, and the suction end of the metering peristaltic pump is connected to a suction pipe that penetrates into the interior of the iodine solution tank. A pH detection sensor is fixedly installed inside the test tank, and a neutral water delivery pipe penetrates the top of the test tank.

[0006] The sampling assembly includes a suction pump, a sampling tube connected to the suction end of the suction pump, and a discharge tube connected to the delivery end of the suction pump.

[0007] The steam generator includes a tank body, several electric heating tubes fixed in the inner cavity of the tank body, and a booster pump fixed on the top of the tank body. The delivery end of the booster pump is connected to a steam delivery pipe that penetrates into the inner cavity of the test tank.

[0008] As a preferred embodiment of this utility model: a drain port is provided on the bottom surface of the detection tank, and a solenoid valve is installed inside the drain port.

[0009] As a preferred embodiment of this utility model: the top surface of the detection tank is provided with 5 through holes, which are respectively used for the steam conveying pipe, the neutral water conveying pipe, the drain pipe, the pH detection sensor and the sample discharge pipe to pass through, and the inside of each through hole is provided with a sealing ring.

[0010] As a preferred embodiment of this utility model: the pH detection sensor is connected to a data transmission line at one end outside the detection tank for transmitting pH value data before and after detection.

[0011] As a preferred embodiment of this utility model: the inner cavity of the iodine solution tank is provided with iodine solution, the top surface of the iodine solution tank is provided with a filling port, and the inner cavity of the iodine solution tank is provided with a liquid level sensor.

[0012] As a preferred embodiment of this utility model: the top surface of the tank is provided with an air outlet, and the air inlet of the booster pump is connected to the air outlet.

[0013] As a preferred embodiment of this utility model: a liquid level sensor and a temperature sensor are installed in the inner cavity of the tank, and a temperature controller is provided on the outer side of the tank.

[0014] As a preferred embodiment of this utility model, a filling port is provided on the outer surface of the tank for replenishing the tank with purified water.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This solution continuously delivers high-temperature steam to the testing tank via a booster pump. Before testing, the tank is preheated and residual gases are dispersed. After testing, the physical scouring and high-temperature sterilization properties of the steam rapidly decompose sulfite crystals, iodide precipitates, and organic deposits generated during the reaction, avoiding tank wear or cleaning dead zones caused by traditional mechanical cleaning. Furthermore, the steam forms a vapor film in direct contact with the inner wall of the tank, preventing reaction droplets from adhering to and solidifying on the wall. Simultaneously, the rising steam creates vortices that can peel away condensate and splash residue from the tank top. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1This is a schematic diagram of the overall structure of the sulfur fumigation intensity testing device;

[0019] Figure 2 This is a schematic diagram of the titration detection vessel assembly;

[0020] Figure 3 This is a schematic diagram of a steam generator.

[0021] Figure 4 This is a schematic diagram of the sampling component.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Titration test vessel assembly; 11. Test vessel; 12. Metering peristaltic pump; 13. Drain pipe; 14. pH sensor; 15. Data transmission line; 16. Neutral water delivery pipe; 17. Iodine solution vessel; 18. Suction pipe; 19. Solenoid valve; 2. Sampling assembly; 21. Suction pump; 22. Sampling pipe; 23. Discharge pipe; 3. Steam generator; 31. Tank body; 32. Electric heating element; 33. Booster pump; 34. Steam delivery pipe. Detailed Implementation

[0024] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0025] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0026] Example 1: The sulfur fumigation intensity testing device for a sugarcane factory in this example consists of a titration testing tank assembly 1, a sampling assembly 2, and a steam generator 3. In the titration testing tank assembly 1, the right side of the testing tank 11 is bolted to an iodine solution tank 17, and a metering peristaltic pump 12 is mounted on the rear side via a bracket. A suction pipe 18 is connected from the bottom of the iodine solution tank 17, and a drain pipe 13 extends into the testing tank 11, achieving quantitative delivery of iodine solution via the peristaltic pump. A through-hole is opened at the top of the testing tank 11, into which a steam delivery pipe 34, a neutral water delivery pipe 16, a drain pipe 13, a pH sensor 14, and a sample discharge pipe 23 are respectively embedded. Each through-hole is fitted with a silicone sealing ring to prevent gas leakage. The pH sensor 14 is connected to an external controller via a data transmission line 15 to transmit real-time data on changes in the acidity and alkalinity of the solution inside the tank. In the sampling assembly 2, a suction pump 21 is connected to the flue gas outlet of a low-temperature sulfur combustion furnace via a sampling pipe 22, and a sample discharge pipe 23 extends to the top of the testing tank 11, achieving continuous delivery of flue gas samples. Three U-shaped electric heating tubes 32 are arranged inside the tank body 31 of the steam generator 3. The top is connected to a booster pump 33 via a flange. The end of the steam delivery pipe 34 extends to below the liquid surface of the detection tank 11. The high-temperature steam heating promotes the dissolution reaction of sulfur dioxide in the flue gas. The iodine solution tank 17 is equipped with a filling port on the top and is pre-filled with a 0.1 mol / L iodine standard solution. The liquid level sensor monitors the remaining amount in real time, and an alarm is triggered when the liquid level is below 20%.

[0027] Example 2: This example adds an intelligent control system to Example 1. A solenoid valve 19 is installed at the bottom drain of the detection tank 11. Linked with a pH sensor 14 via a PLC controller, it automatically opens the drain valve to discharge waste liquid when the pH value of the solution is detected to be below 4.5. Simultaneously, it controls the solenoid valve of the neutral water delivery pipe 16 to inject pure water for dilution. A temperature sensor is added to the inner wall of the steam generator 3's tank body 31, working with an external temperature controller to achieve PID closed-loop regulation, stabilizing the steam temperature within the range of 120±5℃. The metering peristaltic pump 12 is driven by a stepper motor, dynamically adjusting the iodine solution delivery speed according to the rate of pH change. When a sudden change in sulfur dioxide concentration is detected, the system automatically switches to rapid titration mode. The level sensor of the iodine tank 17 is connected to the central control room via a wireless module. When the remaining liquid level is less than 10%, it automatically sends a replenishment reminder to the administrator's mobile phone. A vortex flow meter is added to the end of the steam delivery pipe 34, combined with the variable frequency speed control function of the booster pump 33, to achieve precise control of the steam flow rate.

[0028] Example 3: This example employs a modular design for different production conditions. The titration testing tank assembly 1's testing tank 11 adopts a double-layer jacket structure. The outer layer is circulated with cooling water, while the inner layer maintains the testing temperature within the range of 30-40℃ to prevent iodine solution evaporation due to high temperatures. The sampling assembly 2's suction pump 21 is equipped with a frequency converter, automatically adjusting the suction flow rate according to the sulfur combustion furnace load. When the flue gas volume fluctuates by more than ±15%, the system automatically adjusts the sampling cycle. A backup vent is added to the top of the steam generator tank 3's tank body 31, switching the operating mode via a three-way valve: connected to the booster pump 33 during normal testing, and switched to atmospheric discharge during equipment maintenance. The tank's liquid level sensor adopts a dual-probe redundancy design, automatically switching to the backup probe when the main probe fails, simultaneously triggering an audible and visual alarm. The iodine solution tank 17's filling port is equipped with a quick-connect coupling, supporting online replacement of iodine solutions of different concentrations to meet different testing accuracy requirements.

[0029] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:

[0030] When the device is started, the electric heating tube 32 of the steam generator 3 first heats the pure water in the tank 31. The temperature sensor monitors the water temperature in real time. When the set threshold is reached, the temperature controller maintains the heating power stable. At the same time, the booster pump 33 starts and continuously injects high-temperature steam into the bottom of the detection tank 11 of the titration detection tank assembly 1 through the steam delivery pipe 34. During the steam rise, the tank is preheated and the reaction environment temperature is maintained. At this time, the suction pump 21 of the sampling assembly 2 runs synchronously. It extracts flue gas samples containing sulfur dioxide from the flue gas outlet of the low-temperature sulfur combustion furnace through the sampling pipe 22 and delivers them to the detection tank 11 through the discharge pipe 23. After the flue gas and steam are mixed, the dissolution and conversion of sulfur dioxide into the liquid phase is accelerated.

[0031] As the reaction proceeds, the pH of the solution in the detection tank 11 continuously changes. The pH sensor 14 collects data in real time and transmits it to the control system via the data transmission line 15. When the pH value of the solution drops to the preset reaction threshold, the metering peristaltic pump 12 starts and quantitatively extracts iodine standard solution from the iodine tank 17 through the extraction pipe 18. The solution is then precisely delivered to the detection tank 11 through the drain pipe 13. The iodine solution undergoes an oxidation-reduction reaction with the dissolved sulfur dioxide until the pH value of the solution stabilizes at the titration endpoint. During this process, the liquid level sensor in the iodine tank 17 continuously monitors the remaining liquid volume. When the liquid level is lower than the safety value, a replenishment reminder is triggered. At the same time, the pH value change curve in the detection tank 11 is recorded as sulfur fumigation intensity characteristic data.

[0032] After a single test is completed, the booster pump 33 of the steam generator 3 reduces its power, the steam delivery volume decreases, and the solenoid valve 19 at the bottom of the test tank 11 opens to discharge the reaction waste liquid through the drain port. Subsequently, the solenoid valve of the neutral water delivery pipe 16 opens to inject pure water into the tank for cleaning. During the cleaning process, the metering peristaltic pump 12 can be restarted to deliver a small amount of clean water through the iodine tank 17 to rinse the residue in the drain pipe 13. After cleaning, the solenoid valve 19 opens again to drain the water, and the system enters standby mode to wait for the next test command. If continuous testing is required, the steam generator 3 maintains a continuous steam supply, and the sampling component 2 cyclically extracts flue gas samples according to a preset cycle to achieve dynamic monitoring of sulfur fumigation intensity.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for detecting the intensity of sulphur fumigation in a sugar cane mill, comprising a titration detection tank assembly (1), characterised in that: The top of the titration detection tank assembly (1) is provided with a sampling assembly (2) connected to a low-temperature sulfur combustion furnace, and a steam generator (3) is provided on the front side of the titration detection tank assembly (1). The titration test tank assembly (1) includes a test tank (11), an iodine solution tank (17) fixedly connected to the right side of the test tank (11), and a metering peristaltic pump (12) fixed to the rear side of the test tank (11). The output end of the metering peristaltic pump (12) is connected to a drain pipe (13) that penetrates into the interior of the test tank (11), and the suction end of the metering peristaltic pump (12) is connected to a suction pipe (18) that penetrates into the interior of the iodine solution tank (17). A pH detection sensor (14) is fixedly installed inside the test tank (11), and a neutral water delivery pipe (16) is installed at the top of the test tank (11). The sampling assembly (2) includes a suction pump (21), a sampling tube (22) connected to the suction end of the suction pump (21), and a discharge tube (23) connected to the delivery end of the suction pump (21). The steam generator (3) includes a tank body (31), several electric heating tubes (32) fixed in the inner cavity of the tank body (31), and a booster pump (33) fixed on the top of the tank body (31). The delivery end of the booster pump (33) is connected to a steam delivery pipe (34) that penetrates into the inner cavity of the test tank (11).

2. The apparatus for detecting the intensity of sulphur fumigation in a sugar cane factory as claimed in claim 1, wherein: The bottom surface of the test tank (11) is provided with a drain port, and a solenoid valve (19) is installed in the drain port.

3. The apparatus for detecting the intensity of sulphur fumigation in a sugar cane factory as claimed in claim 1, wherein: The top surface of the testing tank (11) has 5 through holes, which are respectively used for the steam conveying pipe (34), the neutral water conveying pipe (16), the drain pipe (13), the pH detection sensor (14) and the sample discharge pipe (23). Each through hole is equipped with a sealing ring.

4. The apparatus for detecting the intensity of sulphur fumigation in a sugar cane factory as claimed in claim 1, wherein: The pH sensor (14) is located outside the detection tank (11) and is connected to a data transmission line (15) for transmitting pH data before and after detection.

5. The apparatus for detecting the intensity of sulphur fumigation in a sugar cane factory as claimed in claim 1, wherein: The iodine solution tank (17) is provided with iodine solution in its inner cavity, and a filling port is provided on the top surface of the iodine solution tank (17). A liquid level sensor is also provided in the inner cavity of the iodine solution tank (17).

6. The sulfur fumigation intensity testing device for sugarcane factories according to claim 1, characterized in that: The top surface of the tank (31) is provided with an air outlet, and the air inlet of the booster pump (33) is connected to the air outlet.

7. The sulfur fumigation intensity testing device for sugarcane factories according to claim 1, characterized in that: A liquid level sensor and a temperature sensor are installed in the inner cavity of the tank (31), and a temperature controller is provided on the outer side of the tank (31).

8. The apparatus for detecting the intensity of sulphur fumigation in a sugar cane factory as claimed in claim 1, wherein: The outer surface of the tank (31) is provided with a filling port for replenishing pure water into the tank (31).

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