Production device for producing dimethyl sulfoxide by using micro-channel reactor
By using a microchannel reactor in dimethyl sulfoxide production, integrating mixing, heat exchange and reaction, the problem of difficult and insufficient reaction in traditional methods is solved, and a more efficient and safer dimethyl sulfoxide production process is achieved.
Patent Information
- Application Number
- CN202420708628.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-08
AI Technical Summary
In the existing dimethyl sulfoxide production methods, the reaction is difficult to control, the reaction is insufficient, and the traditional reactor causes the reaction temperature to be difficult to control, which is accompanied by certain risks.
A micro-channel reactor is used to produce dimethyl sulfoxide production device. Through the connection of the refined sulfide buffer tank and the hydrogen peroxide buffer tank and the sulfoxide reaction device, the micro-channel reactor integrates mixing, heat exchange and reaction, so that the methyl sulfide and hydrogen peroxide are fully mixed, and the reaction heat is quickly reacted and removed, so as to achieve better reaction control.
Through the use of microchannel reactors, the reaction can be better controlled, the reaction efficiency can be improved, the energy consumption can be reduced, the generation of by-products can be reduced, and the product quality can be improved.
Smart Images
Figure CN222586522U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dimethyl sulfoxide production, in particular to a production device for producing dimethyl sulfoxide by utilizing a microchannel reactor. Background Art
[0002] Dimethyl sulfoxide is an important chemical product, widely used in fluorochloroaniline, acrylic, aromatic hydrocarbon extraction, external medicine, inositol nicotinate, antioxidant 1010, synthetic berberine, esterification accelerator, Chinese medicine extraction agent, water-based paint antifreeze, capacitors, tumor treatment, paint stripper, trifluoronitrobenzene, sucrose stearate, chlorofiber, paraffin refining, automobile antifreeze in high-cold areas, kettle cleaning agent, pesticide synergist, etc.
[0003] The production method of dimethyl sulfoxide in China mainly adopts NO2 oxidation process, which has violent reaction, high energy consumption, and produces sodium nitrate and sodium sulfate as by-products. In addition, considering the safety of N2O4 transportation, most enterprises are equipped with NO2 production equipment, so the process is cumbersome. Traditional hydrogen peroxide oxidation method mostly uses reactor as reactor. This reaction method has long reaction time, poor reaction temperature control and insufficient reaction, and is accompanied by certain risks in the subsequent distillation process. Utility Model Content
[0004] The utility model aims to solve the problems of difficult reaction control and insufficient reaction in the prior art. To this end, the utility model proposes a production device for producing dimethyl sulfoxide using a microchannel reactor, which can better control the progress of the reaction.
[0005] A production device for producing dimethyl sulfoxide using a microchannel reactor comprises a refined sulfide buffer tank and a hydrogen peroxide buffer tank, wherein the refined sulfide buffer tank is connected to a sulfoxide reaction device via a pipeline, a distilled ether feeding pump is installed on the pipeline between the refined sulfide buffer tank and the sulfoxide reaction device, the hydrogen peroxide buffer tank and the sulfoxide reaction device are connected via a pipeline, a hydrogen peroxide feeding pump is installed on the pipeline between the hydrogen peroxide buffer tank and the sulfoxide reaction device, and the sulfoxide reaction device is connected to a sulfide recovery tower via a pipeline.
[0006] Furthermore, the sulfoxide reaction device is a complete set of equipment and is connected to a public engineering system.
[0007] Furthermore, the sulfoxide reaction device adopts a microchannel reactor, and the operating temperature in the sulfoxide reaction device is 20-50° C. and the operating pressure is 0.1-2 MpaG.
[0008] Furthermore, the sulfoxide reaction device uses methyl sulfide and hydrogen peroxide for reaction at a feed ratio of 1:1.5-2.
[0009] Furthermore, the hydrogen peroxide buffer tank stores a 27% concentration hydrogen peroxide aqueous solution.
[0010] Furthermore, the sulfide recovery tower is a packed tower, and the operating temperature in the sulfide recovery tower is 20-50° C., and the operating pressure is 0.1-2 MpaG.
[0011] The difference from the prior art is that the beneficial effects of this application are:
[0012] The production device for producing dimethyl sulfoxide using a microchannel reactor integrates mixing, heat exchange and reaction by using a microchannel reactor, so that methyl sulfide and hydrogen peroxide are fully mixed, the reaction is quickly reacted and the reaction heat is removed, so as to better control the progress of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0014] Figure 1 This is a schematic diagram of the device connection structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the working process of the device of the utility model.
[0016] In the figure:
[0017] 100. Refined sulfide buffer tank; 200. Hydrogen peroxide buffer tank; 300. Refined ether feeding pump; 400. Hydrogen peroxide feeding pump; 500. Sulfoxide reaction device; 600. Sulfide recovery tower. DETAILED DESCRIPTION
[0018] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.
[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.
[0020] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0021] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0022] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0024] Embodiment 1
[0025] See also Figure 1-Figure 2As shown in the figure, a production device for producing dimethyl sulfoxide using a microchannel reactor includes a refined sulfide buffer tank 100 and a hydrogen peroxide buffer tank 200. The hydrogen peroxide stored in the hydrogen peroxide buffer tank 200 is a 27% hydrogen peroxide aqueous solution. The refined sulfide buffer tank 100 is connected to a sulfoxide reaction device 500 through a pipeline. The sulfoxide reaction device 500 in the present application is a device for neutralization reaction of dimethyl sulfoxide crude product disclosed in the prior art. The sulfoxide reaction device 500 is a complete set of equipment and is connected to a utility system to control the reaction temperature and reaction pressure. The sulfoxide reaction device 500 adopts a microchannel reactor. The operating temperature in the sulfoxide reaction device 500 is 20-50°C and the operating pressure is 0.1-2MpaG. The sulfoxide reaction device 500 uses a feed ratio of 1:1.5-2 for the reaction of methyl sulfide and hydrogen peroxide, and does not require a catalyst. A distilled ether feeding pump 300 is installed on the pipeline between the refined sulfide buffer tank 100 and the sulfoxide reaction device 500, and the hydrogen peroxide buffer tank 200 and the sulfoxide reaction device 500 are connected by a pipeline. A hydrogen peroxide feeding pump 400 is installed on the pipeline between the hydrogen peroxide buffer tank 200 and the sulfoxide reaction device 500. The sulfoxide reaction device 500 is connected to a sulfide recovery tower 600 through a pipeline. The sulfide recovery tower 600 is a packed tower, wherein the packing is not limited to bulk packing and structured packing, and the operating temperature in the sulfide recovery tower 600 is 20-50°C, and the operating pressure is 0.1-2MpaG. The production device for producing dimethyl sulfoxide using a microchannel reactor integrates mixing, heat exchange, and reaction by using a microchannel reactor, so that methyl sulfide and hydrogen peroxide are fully mixed, and the reaction heat is removed while reacting quickly, so as to better control the progress of the reaction.
[0026] When in use, the raw materials methyl sulfide and hydrogen peroxide are accurately measured and then fed into the sulfoxide reaction device 500 from the refined sulfide buffer tank 100 and the hydrogen peroxide buffer tank 200 through the distilled ether feeding pump 300 and the hydrogen peroxide feeding pump 400 according to a predetermined ratio. The device is designed with an efficient mixing system to ensure that the two raw materials can be fully mixed and start a chemical reaction. Parameters such as temperature, pressure and reaction time in the reaction device are precisely controlled to maximize the reaction efficiency and ensure the quality of the product. After the reaction is completed, the resulting mixture is transported to the sulfide recovery tower 600. The purpose of this tower is to recover excess methyl sulfide. In the tower, the mixture undergoes a series of physical separation processes so that excess methyl sulfide is separated from the top of the tower. The recovered methyl sulfide is then sent back to the refined sulfide buffer tank 100 to participate in a new round of reaction process again, thereby maximizing the utilization of resources. At the same time, at the bottom of the sulfide recovery tower 600, the crude sulfoxides that have been preliminarily separated are collected, and these crude sulfoxides are then sent to the crude sulfoxide buffer tank for temporary storage so as to enter the subsequent distillation section.
[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A production device for producing dimethyl sulfoxide using a microchannel reactor, comprising a refined sulfide buffer tank (100) and a hydrogen peroxide buffer tank (200), characterized in that: The refined sulfide buffer tank (100) is connected to a sulfoxide reaction device (500) via a pipeline, a distilled ether feeding pump (300) is installed on the pipeline between the refined sulfide buffer tank (100) and the sulfoxide reaction device (500), the hydrogen peroxide buffer tank (200) and the sulfoxide reaction device (500) are connected via a pipeline, a hydrogen peroxide feeding pump (400) is installed on the pipeline between the hydrogen peroxide buffer tank (200) and the sulfoxide reaction device (500), and the sulfoxide reaction device (500) is connected to a sulfide recovery tower (600) via a pipeline.
2. The production device for producing dimethyl sulfoxide using a microchannel reactor according to claim 1, characterized in that: The sulfoxide reaction device (500) is a complete set of equipment and is connected to a public engineering system.
3. The production device for producing dimethyl sulfoxide using a microchannel reactor according to claim 1, characterized in that: The sulfoxide reaction device (500) adopts a microchannel reactor, and the operating temperature in the sulfoxide reaction device (500) is 20-50°C, and the operating pressure is 0.1-2MpaG.
4. The production device for producing dimethyl sulfoxide using a microchannel reactor according to claim 1, characterized in that: The sulfoxide reaction device (500) uses methyl sulfide and hydrogen peroxide for reaction at a feed mass ratio of 1:1.5-2.
5. The production device for producing dimethyl sulfoxide using a microchannel reactor according to claim 1, characterized in that: The hydrogen peroxide buffer tank (200) stores a hydrogen peroxide aqueous solution with a concentration of 27%.
6. The production device for producing dimethyl sulfoxide using a microchannel reactor according to claim 1, characterized in that: The sulfide recovery tower (600) is a packed tower. The operating temperature in the sulfide recovery tower (600) is 20-50°C, and the operating pressure is 0.1-2MpaG.