A ph detection device for octanoic thiol ester production

Abstract

The utility model relates to octanoic acid thiol ester production technical field, concretely for a kind of PH detection device for octanoic acid thiol ester production, including reaction kettle and be arranged on the detection mechanism of reaction kettle, the detection mechanism includes neutralization component and diaphragm pump;The import of neutralization component is connected with the discharge port of reaction kettle by first pipeline, the outlet of neutralization component is connected with the import of diaphragm pump by second pipeline, the outlet of diaphragm pump is connected with the feed inlet of reaction kettle by third pipeline, first pipeline and second pipeline are all equipped with sampling port. Through the design of closed circulation system (first pipeline, second pipeline, third pipeline) and separation bottle, realize PH detection and adjust whole process without opening reaction kettle, completely avoid material leakage risk, guarantee operation safety. Double sampling port (located in first pipeline, second pipeline) support real-time sampling in circulation process, combined with the agitator in separation bottle to accelerate neutralizing agent mixing, ensure that PH value detection result is accurate, responds quickly.

Description

Technical Field

[0001] This utility model relates to the field of octanoic acid thiol ester production technology, specifically a pH detection device for octanoic acid thiol ester production. Background Technology

[0002] In the production of octanoic acid thiols, the pH value of the reaction system must be strictly controlled to ensure reaction efficiency and product quality. Traditional testing methods require frequent opening of the reaction vessel for manual sampling, which has the following drawbacks:

[0003] 1. High safety risks: Opening the reactor may cause leakage of toxic or corrosive materials, threatening the safety of operators;

[0004] 2. Inefficient process: repeated opening of the reactor, sampling, and testing are time-consuming, interrupting the continuity of the reaction and affecting production efficiency;

[0005] 3. Adjustment lag: pH adjustment requires pausing the reaction and adding neutralizing agent to the main reactor, leading to fluctuations in reaction conditions and affecting product stability;

[0006] 4. Contamination risk: External air entering the reactor may introduce impurities, leading to side reactions or a decline in product quality.

[0007] Therefore, there is an urgent need for a pH detection device that can be operated in a closed manner, detected in real time, and adjusted precisely. Utility Model Content

[0008] The purpose of this invention is to provide a pH detection device for the production of octanoic acid thiol esters, which solves the problem mentioned in the background art that traditional detection methods are inconvenient for pH detection.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a pH detection device for the production of octanoic acid mercaptan esters, comprising a reaction vessel and a detection mechanism disposed on the reaction vessel, the detection mechanism comprising a neutralization component and a diaphragm pump; the inlet of the neutralization component is connected to the outlet of the reaction vessel through a first pipeline, the outlet of the neutralization component is connected to the inlet of the diaphragm pump through a second pipeline, and the outlet of the diaphragm pump is connected to the inlet of the reaction vessel through a third pipeline, and sampling ports are provided on both the first and second pipelines.

[0010] Furthermore, the neutralization assembly includes a separation bottle and a stirrer disposed inside the separation bottle; the inlet of the separation bottle is connected to the outlet of the reaction vessel through a first pipeline, the outlet of the separation bottle is connected to the inlet of the diaphragm pump through a second pipeline, and the separation bottle is provided with an addition pipe.

[0011] Furthermore, a discharge pipe is provided on the second pipeline.

[0012] Furthermore, valves are installed on the first pipeline, the second pipeline, the third pipeline, and the discharge pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Enhanced safety: Through a closed-loop system (first pipeline, second pipeline, and third pipeline) and separation bottle design, pH detection and adjustment can be performed without opening the reactor, completely avoiding the risk of material leakage and ensuring operational safety.

[0015] 2. Optimized detection efficiency and accuracy: The dual sampling port setting (located in the first and second pipelines) supports real-time sampling during the circulation process. Combined with the stirrer in the separation bottle to accelerate the mixing of the neutralizing agent, it ensures accurate pH value detection results and rapid response.

[0016] 3. Enhanced ease of operation: Neutralizing agent is injected directly into the separation bottle through the addition tube, and pH adjustment is completed independently of the reaction vessel, avoiding interference with the main reaction process; the diaphragm pump drives the material circulation, realizing continuous detection and adjustment.

[0017] 4. Resource and quality assurance: Residual materials after testing are discharged through the discharge pipe to reduce waste; the entire process is closed to prevent external contamination and ensure the stability of the octanoic acid thiol ester reaction and the purity of the product.

[0018] 5. Improved process controllability: Valves are installed in all pipelines (first pipeline, second pipeline, third pipeline, and discharge pipe) to flexibly switch between circulation, discharge and other modes, improving the flexibility and reliability of system operation. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the overall structure of this utility model.

[0020] In the picture:

[0021] 1. Reactor; 2. Diaphragm pump; 3. First pipeline; 4. Second pipeline; 5. Third pipeline; 6. Sampling port; 7. Separation bottle; 8. Stirrer; 9. Addition pipe; 10. Discharge pipe; 11. Valve. Detailed Implementation

[0022] Please see Figure 1 This utility model discloses a pH detection device for the production of octanoic acid mercaptan esters, comprising a reaction vessel 1, a diaphragm pump 2, a neutralization component, and a connecting pipeline system, forming a closed loop system. This allows for the detection of the pH value of the materials within the reaction vessel 1 without opening it, ensuring that the reaction can proceed within a suitable pH range, increasing the reaction rate, reducing the workload for operators, improving work efficiency, avoiding the risk of material leakage, and ensuring production safety.

[0023] Specifically,

[0024] The neutralization assembly includes a separating flask 7 and a stirrer 8. The separating flask 7 is made of thickened transparent glass and has an addition tube 9 at the top for adding neutralizing agents (such as acid / alkali solutions). The stirrer 8 is installed inside the separating flask 7 to accelerate material mixing and the neutralization reaction.

[0025] The circulation pipeline system includes a first pipeline 3, a second pipeline 4, a third pipeline 5, and a discharge pipe 10. The first pipeline 3 connects the discharge port of the reactor 1 to the inlet of the separation bottle 7. The second pipeline 4 connects the outlet of the separation bottle 7 to the inlet of the diaphragm pump 2. The third pipeline 5 connects the outlet of the diaphragm pump 2 to the feed port of the reactor 1. The discharge pipe 10 is connected to the second pipeline 4 via a branch pipe for emptying or sampling (e.g., residual liquid after testing). Valves 11, preferably solenoid valves, are installed on the first pipeline 3, the second pipeline 4, the third pipeline 5, and the discharge pipe 10 to control the on / off state of each pipeline.

[0026] Sampling ports 6 are provided on both the first pipeline 3 and the second pipeline 4 for sampling and detecting pH value at any time during the circulation process.

[0027] Working principle of this utility model:

[0028] 1. Start the cycle: Close valve 11 on the discharge pipe 10, and open valve 11 on the first pipe 3, the second pipe 4, and the third pipe 5.

[0029] 2. Start diaphragm pump 2: Pump the mixture of octanoic acid thiol ester in reactor 1 into separation bottle 7 through first pipeline 3.

[0030] 3. Neutralization and pH Testing: After the material enters the separator flask 7, a neutralizing agent (such as an acid / alkali solution) can be injected into the flask through the addition tube 9. Alternatively, the mixing reaction between the neutralizing agent and the material can be accelerated by starting the stirrer 8 to ensure uniform pH adjustment.

[0031] 3. Real-time sampling and detection: During the circulation process, a small amount of material is extracted through the sampling port 6 on the first pipeline 3 or the second pipeline 4; the pH value of the extracted sample is detected using pH test paper or a sensor to determine whether the required reaction range (such as neutral conditions) has been reached.

[0032] 4. pH Adjustment and Material Reflux: If the test results do not meet the requirements, continue to add neutralizing agent through the addition pipe 9 until the pH value reaches the standard. The neutralized material is transported by the diaphragm pump 2 through the second pipeline 4, and then refluxed back to the reactor 1 through the third pipeline 5, forming a closed loop system.

[0033] 5. End of Circulation and Discharge: After the pH reaches the target, close the circulation pipeline valve and open valve 11 of the discharge pipe 10 to discharge the residual material in the separation bottle 7. The reactor 1 continues the subsequent production process.

Claims

1. A pH detection device for the production of octanoic acid thiol esters, comprising a reaction vessel (1) and a detection mechanism disposed on the reaction vessel (1), characterized in that, The testing mechanism includes a neutralization component and a diaphragm pump (2); the inlet of the neutralization component is connected to the outlet of the reactor (1) through a first pipeline (3), the outlet of the neutralization component is connected to the inlet of the diaphragm pump (2) through a second pipeline (4), and the outlet of the diaphragm pump (2) is connected to the inlet of the reactor (1) through a third pipeline (5). Sampling ports (6) are provided on both the first pipeline (3) and the second pipeline (4).

2. The detection device as described in claim 1, characterized in that, The neutralization assembly includes a separation bottle (7) and a stirrer (8) disposed inside the separation bottle (7); the inlet of the separation bottle (7) is connected to the outlet of the reactor (1) through a first pipeline (3), the outlet of the separation bottle (7) is connected to the inlet of the diaphragm pump (2) through a second pipeline (4), and the separation bottle (7) is provided with an addition pipe (9).

3. The detection device as described in claim 1, characterized in that, The second pipeline (4) is equipped with a discharge pipe (10).

4. The detection device as described in claim 3, characterized in that, Valves (11) are provided on the first pipeline (3), the second pipeline (4), the third pipeline (5), and the discharge pipe (10).

Images