N-butyraldehyde condensation reactor
By optimizing the structure of the n-butyraldehyde condensation reactor, adopting a two-stage micro-interface reactor and independently controlled alkali addition, the problems of uneven mixing and inaccurate alkali addition were solved, achieving efficient reaction and environmentally friendly production.
Patent Information
- Application Number
- CN202423164722.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-21
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-21
AI Technical Summary
Traditional n-butyraldehyde condensation reactors suffer from problems such as uneven mixing, low reaction efficiency, numerous byproducts, high energy consumption, and environmental pollution risks. In particular, inaccurate addition of alkali leads to poor selectivity of the target product and high COD wastewater pollution.
A reactor comprising a feed mixing zone, a micro-interface reaction zone, and a discharge zone was designed. It employs a two-stage micro-interface reactor and multiple independently controlled alkali addition pipelines. By adding alkali solution stage by stage, the precision of raw material mixing and reaction control is achieved.
It improves the mixing degree of raw materials and reaction efficiency, reduces by-products, lowers energy consumption, avoids environmental pollution caused by excessive alkali solution, and improves product yield and quality.
Smart Images
Figure CN223570690U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, specifically a butyraldehyde condensation reactor. Background Technology
[0002] In the chemical industry, the n-butyraldehyde condensation reaction is an important chemical process used to produce a variety of chemical raw materials and intermediates. Traditional n-butyraldehyde condensation reactors often suffer from problems such as uneven mixing and low reaction efficiency. These problems often lead to poor reaction selectivity, numerous by-products, high energy consumption, and potential risks to the environment and operators.
[0003] To improve reaction efficiency and product yield, a novel reactor is needed that provides more efficient mixing and more precise chemical dosage control. Existing technologies lack sufficient control over the way reactants are added. For example, in the alkali condensation of n-butyraldehyde, excessive addition of alkali can easily lead to side reactions, thereby reducing the selectivity of the target product and affecting product quality. Furthermore, excessive liquid alkali catalyst may generate large amounts of high-COD, high-pH wastewater, causing environmental pollution.
[0004] Therefore, developing a novel n-butyraldehyde condensation reactor to solve these problems has become an important topic in the chemical industry. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a butyraldehyde condensation reactor, which achieves the purpose of precise control of raw material addition and improved raw material mixing and reaction efficiency through optimization and improvement of reactor structure.
[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:
[0007] A butyraldehyde condensation reactor includes a reactor body, wherein the reactor body is provided with a feeding mixing zone, a micro-interface reaction zone and a discharge zone from bottom to top.
[0008] The bottom of the feeding and mixing zone is provided with a butyraldehyde inlet and an air inlet;
[0009] The micro-interface reaction zone includes two micro-interface reactors, with a transition zone between the two micro-interface reactors; alkaline solution addition pipelines are respectively provided on the two micro-interface reactors and the side of the transition zone.
[0010] The discharge area is provided with a discharge port on the side and a waste gas outlet on the top.
[0011] As an improvement, the number of alkali addition pipelines is three, and each alkali addition pipeline is equipped with an independently controlled flow valve.
[0012] As an improvement, the micro-interface reactor adopts a two-stage configuration, including a primary mixing section and a secondary mixing section, with the end of the primary mixing section connected to the secondary mixing section;
[0013] The primary mixing section includes: an intake section, a premixing section, an impeller, and a first diffusion section;
[0014] The secondary mixing section includes: a second intake section, a second mixing section, a second impeller, and a second diffusion section. The side of the second intake section is connected to the alkali addition pipeline.
[0015] As an improvement, the pipe diameter of the secondary mixing section is larger than that of the primary mixing section.
[0016] As an improvement, the angle of the intake section and the secondary intake section is 30-40°.
[0017] As an improvement, the angle of the first diffusion section is 5-10°, and the angle of the second diffusion section is 10-20°.
[0018] As an improvement, a grid plate is provided inside the discharge zone.
[0019] As an improvement, a guide vane is provided inside the transition zone.
[0020] The advantages of this utility model are:
[0021] 1. This invention features a micro-interface reaction zone, which effectively improves the mixing degree of raw materials. The micro-interface reaction zone includes two micro-interface reactors and a transition zone, maximizing the contact area between reactants, thereby accelerating the reaction rate and improving reaction efficiency. Furthermore, the micro-interface reactors employ a two-stage configuration, including a primary mixing section and a secondary mixing section, resulting in more thorough mixing and further enhancing reaction efficiency.
[0022] 2. This invention precisely controls the amount of alkali added by adding it in stages. There are three alkali addition pipelines, each equipped with an independently controlled flow valve. Operators can precisely adjust the flow rate of the alkali according to the needs of the reaction, avoiding excessive alkali concentration that could affect the yield and quality of the product. Attached Figure Description
[0023] Figure 1 This is a structural diagram of a butyraldehyde condensation reactor used in Example 1.
[0024] Figure 2 This is a structural diagram of the micro-interface reactor in a butyraldehyde condensation reactor in Example 1.
[0025] Figure 3 This is a structural diagram of a butyraldehyde condensation reactor used in Example 2.
[0026] The image shows:
[0027] 1-Reactor body, 2-Feed mixing zone, 21-Butyraldehyde inlet, 22-Air inlet, 3-Micro-interface reaction zone, 31-Micro-interface reactor, 311-Primary mixing section, 3111-Intake section, 3112-Premixing section, 3113-Impeller, 3114-First diffusion section, 312-Secondary mixing section, 3121-Second intake section, 3122-Second mixing section, 3123-Second impeller, 3124-Second diffusion section, 32-Transition zone, 33-Guide plate, 4-Discharge zone, 41-Grid plate, 42-Discharge port, 43-Waste gas outlet, 5-Alkali solution addition pipeline, 51-Flow valve. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0029] Example 1
[0030] This embodiment discloses a butyraldehyde condensation reactor, including a reactor body 1. The reactor body 1 has a feeding mixing zone 2, a micro-interface reaction zone 3 and a discharge zone 4 arranged sequentially from bottom to top inside.
[0031] The bottom of the feeding and mixing zone 2 is provided with a butyraldehyde inlet 21 and an air inlet 22.
[0032] The micro-interface reaction zone 3 includes two micro-interface reactors 31, and a transition zone 32 is provided between the two micro-interface reactors 31; alkaline solution addition pipelines 5 are respectively provided on the sides of the two micro-interface reactors 31 and the transition zone 32.
[0033] The discharge zone 4 is equipped with a grid plate 41 inside, a discharge port 42 on the side, and an exhaust gas outlet 43 on the top.
[0034] In this embodiment, there are three alkali addition pipelines 5, which are respectively connected to the two micro-interface reactors 31 and the transition zone 32, enabling stepwise and precise alkali addition. Each alkali addition pipeline 5 is equipped with an independently controlled flow valve 51.
[0035] The micro-interface reactor 31 is configured in two stages, including a primary mixing section 311 and a secondary mixing section 312, with the end of the primary mixing section 311 connected to the secondary mixing section 312.
[0036] The primary mixing section 311 includes: an intake section 3111, a premixing section 3112, an impeller 3113, and a first diffusion section 3114;
[0037] The secondary mixing section 312 includes: a second intake section 3121, a second mixing section 3122, a second impeller 3123, and a second diffusion section 3124. The side of the second intake section 3121 is connected to the alkali addition pipeline 5.
[0038] The pipe diameter of the secondary mixing section 312 is larger than that of the primary mixing section 311.
[0039] The angles of the intake section 3111 and the secondary intake section 3121 are 30-40°. The angle of the first diffuser section 3114 is 5-10°, and the angle of the second diffuser section 3124 is 10-20°.
[0040] In this embodiment, the n-butyraldehyde raw material is uniformly introduced into the second intake section 3121 after passing through the pressure diffusion effect of the first mixing section 311. Alkali solution is added to the second intake section 3121 and mixed. After passing through the shearing action of the second impeller 3123 and the pressure diffusion effect of the second mixing section 312, the raw material and the alkali solution are fully mixed and reacted.
[0041] Example 2
[0042] This embodiment discloses a butyraldehyde condensation reactor.
[0043] In this embodiment, a guide plate 33 is provided inside the transition zone 32.
[0044] The other structures in this embodiment are the same as in Embodiment 1.
[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A n-butyraldehyde condensation reactor characterized by, The reactor comprises a reactor body, which is internally provided with a feed mixing zone, a micro-interface reaction zone and a discharge zone from bottom to top in sequence; The bottom of the feed mixing zone is provided with a n-butyl aldehyde feed port and an air feed port; The micro-interface reaction zone comprises two micro-interface reactors, and a transition zone is arranged between the two micro-interface reactors; alkali liquor adding pipelines are arranged on the side of the two micro-interface reactors and the transition zone, respectively. The side of the discharge zone is provided with a discharge port, and the top is provided with a waste gas outlet.
2. A n-butyraldehyde condensation reactor according to claim 1, characterized in that, The number of the alkali liquor adding pipelines is three, and flow valves independently controlled are arranged on the alkali liquor adding pipelines.
3. A n-butyraldehyde condensation reactor according to claim 1, characterized in that, The micro-interface reactor is arranged in a two-stage mode and comprises a first mixing section and a second mixing section, and the end of the first mixing section is connected with the second mixing section. The first mixing section comprises an air suction section, a pre-mixing section, an impeller and a first diffusion section. The second mixing section comprises a second air suction section, a second mixing section, a second impeller and a second diffusion section, and the side of the second air suction section is communicated with the alkali liquor adding pipeline.
4. A n-butyraldehyde condensation reactor according to claim 3, characterized in that, The pipe diameter of the second mixing section is greater than that of the first mixing section.
5. A n-butyraldehyde condensation reactor according to claim 3, characterized in that, The angle of the air suction section and the second air suction section is 30-40°.
6. A n-butyraldehyde condensation reactor according to claim 3, characterized in that, The angle of the first diffusion section is 5-10°, and the angle of the second diffusion section is 10-20°.
7. A n-butyraldehyde condensation reactor as claimed in claim 1, wherein, The discharge zone is internally provided with a grid plate.
8. A n-butyraldehyde condensation reactor according to claim 1, characterized in that, The transition zone is internally provided with a flow guide plate.