Hydrogen peroxide working solution mixing, conveying and returned material recycling system
By designing a hydrogen peroxide working fluid mixing, conveying, and return material recycling system, the problems of inaccurate working fluid mixing and non-recovery of returned materials were solved, achieving efficient and automated mixing and return material recycling, and improving the stability and economy of hydrogen peroxide production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI SANNING CHEM
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-19
AI Technical Summary
In the hydrogen peroxide production process, the mixing of working solutions relies on manual operation, which makes it difficult to guarantee accuracy, resulting in fluctuations in product quality, failure to effectively recover returned materials, waste of resources, and increased costs.
Design a hydrogen peroxide working fluid mixing, conveying, and return/recovery system. A static mixer is connected via pipelines for polar solvent, aromatic solvent, and anthraquinone. The anthraquinone is preheated by a heating element and mixed with the solvent. The system is automated with a controller to ensure accurate mixing and return/recovery.
It achieves uniform mixing and stable delivery of the working fluid, reduces production costs, improves production efficiency and product quality, and reduces labor intensity.
Smart Images
Figure CN224252698U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydrogen peroxide production technology, and relates to a hydrogen peroxide working fluid mixing, conveying and recycling system. Background Technology
[0002] The working fluid in hydrogen peroxide production is a crucial medium. The accuracy of its mixing ratio and the stability of its delivery directly determine the production efficiency and product quality. In traditional hydrogen peroxide production, the mixing of the working fluid was largely done manually, which was not only labor-intensive but also difficult to guarantee precise mixing ratios, easily leading to fluctuations in product quality. Furthermore, the waste materials generated during production were often not effectively recycled and reused, resulting in resource waste and increased production costs.
[0003] CN107399720A discloses a continuous preparation device for hydrogen peroxide working solution, in which anthraquinone is added in solid form and mixed and dissolved with other solvents and materials in a working solution preparation stirring tank. However, there may be problems such as incomplete dissolution and uneven dispersion of anthraquinone, which may affect the reaction effect in the later stage, and there are also problems such as low batching accuracy.
[0004] Therefore, it is evident that developing a highly automated system capable of precise mixing and conveying, and effective recycling of returned materials is crucial for improving hydrogen peroxide production efficiency, reducing costs, and ensuring production safety. Summary of the Invention
[0005] This invention provides a hydrogen peroxide working fluid mixing, conveying, and return material recycling system, which features high batching accuracy, stable conveying, and efficient recovery of returned materials, thereby reducing production costs.
[0006] The technical solution of this utility model is to provide a hydrogen peroxide working fluid mixing, conveying, and return recovery system, including a polar solvent pipeline, an aromatic solvent pipeline, and an anthraquinone pipeline. The polar solvent pipeline and the aromatic solvent pipeline merge and are connected to the inlet of the main mixer via a main pipeline and branch pipelines, respectively. The branch pipeline merges with the anthraquinone pipeline and connects to the inlet of the main mixer via a branch mixer. The outlet of the main mixer is connected to the working fluid tank, and the outlet of the working fluid tank is connected to the production device. The return port of the production device is also connected to the working fluid tank via a pipeline. The polar solvent pipeline is equipped with a polar solvent flow meter and a polar solvent regulating valve, the aromatic solvent pipeline is equipped with an aromatic solvent flow meter and an aromatic solvent regulating valve, the anthraquinone pipeline is equipped with an anthraquinone flow meter and an anthraquinone regulating valve, and the branch pipelines are equipped with branch flow meters and branch regulating valves.
[0007] Furthermore, the anthraquinone pipeline includes an anthraquinone tank equipped with a heating component. The outlet of the anthraquinone tank is connected to a branch pipeline after passing through an anthraquinone pump, an anthraquinone flow meter, and an anthraquinone regulating valve.
[0008] Furthermore, the heating component is a heat exchange tube, and the heat exchange medium of the heat exchange tube comes from the feed pipe of the oxidation tower feed tank. After heat exchange in the anthraquinone tank, it is reconnected to the feed pipe of the oxidation tower feed tank through a heat exchanger.
[0009] Furthermore, the heating components are provided in multiple sets, one of which is connected to a steam pipe.
[0010] Furthermore, each of the heat exchange medium pipelines of the heating assembly is equipped with a thermometer and a corresponding regulating valve.
[0011] Furthermore, the working fluid tank is equipped with a level gauge, and its outlet is equipped with a working fluid shut-off valve and a working fluid transfer pump.
[0012] Furthermore, both the branch mixer and the main mixer are static mixers.
[0013] Furthermore, the system also includes a controller, and the signal output terminals of the polar solvent flow meter, aromatic solvent flow meter and anthraquinone flow meter are all connected to the controller. The signal output terminals of the controller are respectively connected to the corresponding polar solvent regulating valve, aromatic solvent regulating valve and anthraquinone regulating valve.
[0014] This utility model has the following beneficial effects:
[0015] The system provided by this invention uses an anthraquinone tank to heat and pyrolyze anthraquinone, which is then mixed in liquid form with polar and aromatic solvents. The initial mixing is completed before the mixture enters the working liquid tank, resulting in a more uniform working liquid mixture.
[0016] When heating the anthraquinone tank, excess system heat can be used for preheating, reducing steam consumption and heat exchanger waste. Because of its inherent temperature, direct mixing with polar and aromatic solvents in the main pipeline can lead to significant temperature variations and uneven mixing. This system utilizes a branch pipeline drawn from the main pipeline to pre-mix with the anthraquinone pipeline before it enters the main mixer, achieving efficient mixing and ensuring the stability and homogeneity of the working fluid.
[0017] The system is also equipped with a return pipeline, through which the returned material from the production unit is returned to the working liquid tank for collection and reuse, avoiding waste of raw materials and reducing production costs.
[0018] This system can also be equipped with a controller to provide automated control. Signals are sent to the controller via thermometers, flow meters, and level gauges. The controller then adjusts the opening of each valve as needed to ensure mixing stability, reduce labor intensity, and improve work efficiency. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.
[0021] like Figure 1 As shown, this utility model provides a hydrogen peroxide working fluid mixing, conveying, and return recovery system, including a polar solvent pipeline 1, an aromatic solvent pipeline 2, and an anthraquinone pipeline 3. The polar solvent pipeline and the aromatic solvent pipeline merge and are connected to the inlet of the main mixer 6 via a main pipeline 4 and a branch pipeline 5, respectively. The branch pipeline merges with the anthraquinone pipeline and is connected to the inlet of the main mixer via a branch mixer 7. The outlet of the main mixer is connected to the working fluid tank 8, and the outlet of the working fluid tank is connected to the production device 9. The return port of the production device is also connected to the working fluid tank via a pipeline. The polar solvent pipeline is equipped with a polar solvent flow meter 1-1 and a polar solvent regulating valve 1-2, the aromatic solvent pipeline is equipped with an aromatic solvent flow meter 2-1 and an aromatic solvent regulating valve 2-2, the anthraquinone pipeline is equipped with an anthraquinone flow meter 3-1 and an anthraquinone regulating valve 3-2, and the branch pipeline is equipped with a branch flow meter 5-1 and a branch regulating valve 5-2.
[0022] This invention features a material return system. The working fluid is preferably purified before being reused in production, which helps maintain stable product quality and reduces the impact of raw material fluctuations on product quality.
[0023] In some embodiments, the anthraquinone pipeline includes an anthraquinone tank 3-3, which is equipped with a heating component. The outlet of the anthraquinone tank is connected to a branch pipeline via an anthraquinone pump 3-4, an anthraquinone flow meter 3-1, and an anthraquinone regulating valve 3-2. This system can dissolve anthraquinone before mixing it with other materials, resulting in more uniform liquid-liquid mixing and more stable working fluid quality.
[0024] In some embodiments, the heating component is a heat exchange tube. The heat exchange medium of the heat exchange tube originates from the feed pipe of the oxidation tower feed tank 10. After heat exchange in the anthraquinone tank, it is reconnected to the feed pipe of the oxidation tower feed tank via heat exchanger 11. This heat (approximately 70°C) can be used to heat the material in the anthraquinone tank, preheating it to above 50°C. If insufficient, steam can be used to raise the temperature to above 60°C.
[0025] In some embodiments, the heating components are provided in multiple groups, one of which is connected to a steam pipe.
[0026] In some embodiments, the heat exchange medium pipeline of the heating assembly is equipped with a thermometer and a corresponding regulating valve. The signal output terminal of the thermometer is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the regulating valve (not shown in the figure). The opening degree of the regulating valve can be controlled according to the temperature to ensure that the liquid in the anthraquinone tank reaches the required level.
[0027] In some embodiments, the working fluid tank is equipped with a level gauge, and its outlet is equipped with a working fluid shut-off valve and a working fluid delivery pump. The signal output terminal of the level gauge is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the working fluid shut-off valve and the working fluid delivery pump to control the opening and closing of the working fluid shut-off valve and the starting and stopping of the working fluid delivery pump.
[0028] In some embodiments, the main mixers are all static mixers; the branch mixers are Venturi mixers, jet mixers, or static mixers. After the polar solvent and aromatic solvent are mixed, they are co-mixed through main and branch pipelines. A small amount of solvent from the branch pipeline is first mixed with the material from the anthraquinone pipeline in the branch mixer, and then enters the main mixer. This dual-mixer approach ensures precise working fluid proportions and consistent working fluid quality, thereby improving the production quality of hydrogen peroxide.
[0029] In some embodiments, the system further includes a controller 12, whose signal output terminals are connected to the polar solvent flow meter, aromatic solvent flow meter, and anthraquinone flow meter. The controller's signal output terminal is then connected to the corresponding polar solvent regulating valve, aromatic solvent regulating valve, and anthraquinone regulating valve, respectively. By installing flow meters and flow control valves on the polar solvent, aromatic solvent, and anthraquinone pipelines, respectively, and connecting the signals of each flow meter to the controller, and then connecting the controller's signal output terminal to the regulating valve, the proportions of the three raw materials can be adjusted as needed to achieve precise preparation of the working solution.
[0030] The following is a specific operational example for further explanation: 2-pentylanthraquinone is heated and melted in the anthraquinone tank, and then transported at a flow rate of 3 m³ / h via an anthraquinone flow meter and regulating valve into the branch mixer. The flow rate of the polar solvent is controlled at 5 m³ / h via a polar solvent flow meter and regulating valve; the flow rate of the aromatic solvent is controlled at 4 m³ / h via an aromatic solvent flow meter and regulating valve. The flow rate of the polar solvent and aromatic solvent mixture in the branch pipeline is controlled at 3 m³ / h. After mixing in the branch mixer, it enters the main mixer for further mixing, and the mixture of the three raw materials is controlled to enter the working liquid tank at a flow rate of 12 m³ / h.
[0031] Working fluid delivery: The working fluid in the tank is delivered to the production unit via a transfer pump and a shut-off valve, with a stable flow rate of 23 m³ / h. The production unit operates stably, and the hydrogen peroxide output meets expectations. Waste material recycling: The working fluid produced by the production unit is tested and found to meet the standards for continued use. It is recycled back to the working fluid tank at a flow rate of 11 m³ / h, mixed with freshly prepared working fluid, and then continues to participate in the production cycle. During this process, real-time monitoring of the liquid level and composition in the working fluid tank ensures stable working fluid quality. Due to the effective recycling of waste material, the consumption of raw materials for the working fluid is reduced by 20%, significantly lowering production costs.
[0032] The above embodiments describe preferred embodiments of the present invention, but the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combining the various technical features in any other way. These simple modifications and combinations should also be considered as the content disclosed by the present invention and all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be determined by the appended claims.
Claims
1. A hydrogen peroxide working fluid mixing, conveying, and return / recycling system, characterized in that: It includes polar solvent pipelines, aromatic solvent pipelines, and anthraquinone pipelines. The polar solvent pipeline and aromatic solvent pipeline merge and are connected to the main mixer inlet via main pipelines and branch pipelines. The branch pipelines merge with the anthraquinone pipeline and are connected to the main mixer inlet via branch mixers. The main mixer outlet is connected to the working liquid tank, and the working liquid tank outlet is connected to the production unit. The production unit return outlet is also connected to the working liquid tank via a pipeline. Polar solvent pipelines are equipped with polar solvent flow meters and polar solvent regulating valves, aromatic solvent pipelines are equipped with aromatic solvent flow meters and aromatic solvent regulating valves, anthraquinone pipelines are equipped with anthraquinone flow meters and anthraquinone regulating valves, and branch pipelines are equipped with branch flow meters and branch regulating valves.
2. The system according to claim 1, characterized in that: The anthraquinone pipeline includes an anthraquinone tank containing a heating element. The outlet of the anthraquinone tank is connected to a branch pipeline via an anthraquinone pump, an anthraquinone flow meter, and an anthraquinone regulating valve.
3. The system according to claim 2, characterized in that: The heating component is a heat exchange tube, and the heat exchange medium of the heat exchange tube comes from the feed pipe of the oxidation tower feed tank. After heat exchange in the anthraquinone tank, it is reconnected to the feed pipe of the oxidation tower feed tank through a heat exchanger.
4. The system according to claim 2, characterized in that: The heating components are provided in multiple sets, one of which is connected to a steam pipe.
5. The system according to claim 4, characterized in that: The heat exchange medium pipelines of the heating components are equipped with thermometers and corresponding regulating valves.
6. The system according to claim 1, characterized in that: The working fluid tank is equipped with a level gauge, and its outlet is equipped with a working fluid shut-off valve and a working fluid transfer pump.
7. The system according to claim 1, characterized in that: The main road mixers are all static mixers; the branch road mixers are Venturi mixers, jet mixers, or static mixers.
8. The system according to any one of claims 1 to 7, characterized in that: The system also includes a controller. The signal output terminals of the polar solvent flow meter, aromatic solvent flow meter, and anthraquinone flow meter are all connected to the controller. The signal output terminals of the controller are respectively connected to the corresponding polar solvent regulating valve, aromatic solvent regulating valve, and anthraquinone regulating valve.