Synthesis reactor

Abstract

According to the synthesis reactor provided by the utility model, the interior of the reaction barrel is divided into a plurality of areas through the mixing tower tray, the mixing tower tray is provided with the stirring cavity with the upper opening, the stirring device is arranged on the reaction barrel, and at least one mixing paddle on the stirring shaft is accommodated in the stirring cavity of the mixing tower tray. When materials enter the reaction barrel from the material inlet of the reaction barrel, the materials flow into the stirring cavity of the mixing tower tray, the materials are fully mixed and react under the stirring action of the mixing paddles, and the mixed reaction materials overflow to the next area from the mixing tower tray and react and are mixed under the action of the mixing paddles. And finally, the material flows out from the material outlet of the reaction cylinder. The inner cavity of the reaction barrel is divided into a plurality of areas by utilizing the mixing tower tray, and the mixing paddles are adopted in the stirring cavity of the mixing tower tray for full mixing, so that the stirring is more uniform, the reaction time is more uniform, the synthesis processing efficiency is effectively improved, and the product quality is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production, and particularly relates to a synthesis reactor. Background Art

[0002] A synthesis reactor is a key chemical equipment used to achieve chemical reactions. It can promote chemical reactions to achieve the synthesis of specific chemicals such as oxalamide. According to different process requirements, the design and application of the synthesis reactor will be innovative, and its structural form basically determines the synthesis processing efficiency of the specific chemical.

[0003] In the prior art, high-quality slow-release nitrogen fertilizers such as oxamide are widely used in the field of agricultural fertilizers because of their high nitrogen content, ability to be completely degraded and non-toxic. At present, with increasingly stringent environmental protection policies, the demand for oxamide continues to grow. However, despite the increase in demand, the overall market size of oxamide is still relatively small. The structural design of the oxamide synthesis reactor widely used in the market is relatively complex, and the reaction process is uneven, resulting in low synthesis and processing efficiency.

[0004] Therefore, how to overcome the above technical defects is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a synthesis reactor which can achieve full mixing and improve the synthesis processing efficiency.

[0006] In order to solve the above technical problems, the utility model provides a synthesis reactor, comprising:

[0007] A reaction cylinder having a material inlet and a material outlet;

[0008] A stirring device, comprising a driving mechanism, a stirring shaft and a plurality of mixing blades, wherein the driving mechanism is arranged outside the reaction cylinder, one end of the stirring shaft is connected to the output end of the driving mechanism, the other end of the stirring shaft penetrates the reaction cylinder and is inserted into the interior of the reaction cylinder, and a plurality of mixing blades are arranged at intervals at the other end of the stirring shaft;

[0009] A mixing tower plate, wherein the mixing tower plate has a stirring chamber with an upper opening, the mixing tower plate passes through the stirring shaft, the stirring chamber accommodates at least one mixing blade, and at least part of the side wall of the mixing tower plate and the inner wall of the reaction cylinder have an overflow channel.

[0010] Optionally, in the above-mentioned synthesis reactor, a plurality of mixing tower plates are arranged along the height direction of the stirring shaft.

[0011] Optionally, in the above synthesis reactor, the overflow channels of adjacent mixing trays are arranged in a staggered manner.

[0012] Optionally, in the above-mentioned synthesis reactor, the reaction cylinder comprises an upper head and a cylinder, the upper head and the cylinder are buckled together to form a closed cavity, and the upper head and the cylinder are connected by a flange.

[0013] Optionally, in the above-mentioned synthesis reactor, the material inlet is arranged on the upper side of the cylinder, and the material outlet is arranged on the bottom of the cylinder.

[0014] Optionally, in the above-mentioned synthesis reactor, a gas outlet is provided on the reaction cylinder.

[0015] Optionally, the above synthesis reactor further includes a pressure gauge and / or a thermometer connected to the gas outlet of the reaction cylinder.

[0016] Optionally, in the above-mentioned synthesis reactor, an impact baffle is provided on the inner wall of the reaction cylinder and above the material inlet.

[0017] Optionally, in the above-mentioned synthesis reactor, the anti-impact baffle and the inner wall of the reaction cylinder form a guide channel with an opening facing downward.

[0018] Optionally, in the above-mentioned synthesis reactor, the mixing tower plate includes a semicircular bottom plate and side walls, the semicircular bottom plate has an arc-shaped edge and a straight edge, the arc-shaped edge of the semicircular bottom plate is completely matched with the inner wall of the reaction cylinder, and the side wall is vertically arranged on the straight edge of the semicircular bottom plate, so that the mixing tower plate and the inner wall of the reaction cylinder form the stirring chamber.

[0019] The utility model provides a synthesis reactor, which has the following beneficial effects:

[0020] The interior of the reaction cylinder is divided into multiple areas by a mixing tray. The mixing tray has a stirring chamber with an opening at the top. A stirring device is arranged on the reaction cylinder. The stirring chamber of the mixing tray contains at least one mixing blade on a stirring shaft. When the material enters from the material inlet of the reaction cylinder, it flows into the stirring chamber of the mixing tray. The material is fully mixed and reacted under the stirring action of the mixing blade. The mixed reaction material overflows from the mixing tray to the next area, reacts and mixes under the action of the mixing blade, until it finally flows out through the material outlet of the reaction cylinder. By using a mixing tray to divide the inner cavity of the reaction cylinder into multiple areas, a mixing blade is used in the stirring chamber of the mixing tray for full mixing, so that the stirring is more uniform, the reaction time is more uniform, the synthesis processing efficiency is effectively improved, and the product quality is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a synthesis reactor provided in an embodiment of the utility model.

[0023] In the above picture:

[0024] 101-cylinder; 102-upper head; 103-flange; 104-mixing tray; 105-material inlet; 106-anti-impact baffle; 107-material outlet; 108-gas outlet;

[0025] 201 - driving mechanism; 202 - stirring shaft; 203 - mixing blade. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] The core of the utility model is to provide a synthesis reactor, which can achieve full mixing and improve the synthesis processing efficiency.

[0028] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Specifically, please refer to Figure 1 The utility model provides a synthesis reactor, which includes a reaction cylinder, a stirring device and a mixing tower plate 104.

[0030] The reaction cylinder has a material inlet 105 and a material outlet 107. The material inlet 105 is used to introduce materials, and the material outlet 107 is used to discharge the reacted materials. The cavity inside the reaction cylinder can realize the chemical reaction of the materials.

[0031] The stirring device includes a driving mechanism 201, a stirring shaft 202 and a plurality of mixing blades 203. The driving mechanism 201 is arranged on the outside of the reaction cylinder, and the driving mechanism 201 can be a rotating power device such as a driving motor. One end of the stirring shaft 202 is connected to the output end of the driving mechanism 201, and the other end of the stirring shaft 202 penetrates the reaction cylinder and is inserted into the interior of the reaction cylinder. A plurality of mixing blades 203 are arranged at intervals at the other end of the stirring shaft 202, which can achieve stirring and mixing of materials in the reaction cylinder.

[0032] The mixing tray 104 divides the internal space of the reaction cylinder into multiple areas. The mixing tray 104 has a stirring chamber with an opening at the top, and the mixing tray 104 passes through the stirring shaft 202. At least one mixing blade 203 is accommodated in the stirring chamber, and at least part of the side wall of the mixing tray 104 and the inner wall of the reaction cylinder have an overflow channel. The stirring chamber of the mixing tray 104 can achieve full mixing of materials, and with the addition of new materials, the mixed reaction materials are discharged from the stirring chamber to the lower area. Specifically, the materials in the stirring chamber of the mixing tray 104 can flow into the lower area of ​​the mixing tray 104 through the overflow channel on one side of the mixing tray 104.

[0033] The utility model provides a synthesis reactor, wherein the interior of a reaction cylinder is divided into a plurality of regions by a mixing tray 104, the mixing tray 104 has a stirring chamber with an upper opening, a stirring device is arranged on the reaction cylinder, and the stirring chamber of the mixing tray 104 contains at least one mixing blade 203 on a stirring shaft 202. When the material enters from the material inlet 105 of the reaction cylinder, it flows into the stirring chamber of the mixing tray 104, and the material is fully mixed and reacted under the stirring action of the mixing blade 203. The mixed reaction material overflows from the side of the mixing tray 104 to the next region, reacts and mixes under the action of the mixing blade, until finally flowing out through the material outlet 107 of the reaction cylinder. By using the mixing tray 104 to divide the inner cavity of the reaction cylinder into a plurality of regions, the mixing blade 203 is used in the stirring chamber of the mixing tray 104 for full mixing, so that the stirring is more uniform, the reaction time is more uniform, the synthesis processing efficiency is effectively improved, and the product quality is more stable. Compared with the existing synthesis reactor, the material backmixing is less.

[0034] The number of the mixing trays 104 may be one or more. In a specific embodiment, a plurality of mixing trays 104 are arranged along the height direction of the stirring shaft 202. Each mixing tray 104 is arranged in the reaction cylinder at equal or unequal intervals. The bottom of the mixing tray 104 may be in the shape of a flat plate. The stirring shaft 202 passes through the bottom of the mixing tray 104 and is arranged perpendicular to the bottom of the mixing tray 104. The diameter of the bottom of the mixing tray 104 is smaller than the inner diameter of the reaction cylinder at the cross section.

[0035] The interior of the reaction cylinder is divided into multiple different mixing reaction areas (i.e., stirring chambers) by multiple mixing trays 104, and each mixing reaction area is provided with a mixing blade 203 for sufficient mixing. Such a configuration has a simple structure, uniform reaction, and forms a plug flow reactor with basically uniform residence time.

[0036] In a further specific embodiment, the overflow channels of adjacent mixing trays 104 are arranged in a staggered manner, so that the material overflowing from the mixing tray 104 of the upper layer can completely enter the stirring chamber of the mixing tray 104 of the lower layer.

[0037] In a specific embodiment, the reaction cylinder includes an upper head 102 and a cylinder 101, the upper head 102 and the cylinder 101 are buckled to form a closed cavity, and the upper head 102 and the cylinder 101 are connected by a flange 103. The driving mechanism 201 can be installed on the upper part of the upper head 102. During installation, the mixing tower plate 104 can be fixed to the inner wall of the reaction cylinder by means of a bracket or welding. The internal parts of the reactor such as the mixing blade 203 can be entered or taken out from the opening above the cylinder 101 of the reaction cylinder.

[0038] In order to reasonably utilize the space, a material inlet 105 is provided on the upper side of the cylinder 101, and a material outlet 107 is provided at the bottom of the cylinder 101. Of course, the number and position of the material inlet 105 and the material outlet 107 can also be adaptively improved according to actual needs, and the material can be added from different positions of the synthesis reactor in different ways, such as co-current, countercurrent or staged addition, according to the characteristics of the reaction process.

[0039] In a specific embodiment, the reaction cylinder is provided with a gas outlet 108. The gas outlet 108 can be provided at the upper part of the reaction cylinder, in particular, at the upper part of the upper end cap 102. The gas outlet 108 is mainly used to replace the entire reactor system with nitrogen or other inert gases before the reaction starts, and to discharge gases such as oxygen in the reaction cylinder cavity.

[0040] This solution also includes a pressure gauge and / or a thermometer connected to the gas outlet 108 of the reaction cylinder to facilitate the detection of the pressure and temperature inside the reaction cylinder.

[0041] In order to guide the materials entering the reaction cylinder, a baffle plate 106 is provided on the inner wall of the reaction cylinder and above the material inlet 105. The baffle plate 106 and the inner wall of the reaction cylinder form a downward-opening guide channel. After the materials are ejected into the reaction cylinder from the material inlet 105, the flow direction of the materials at the material inlet 105 is perpendicular to the axis of the reaction cylinder. The materials are blocked by the baffle plate 106 and the flow direction of the materials is changed to a vertical downward direction. Figure 1As shown, after the material enters the reaction cylinder from the material inlet 105, it first enters the stirring chamber of the mixing tray 104 located at the top layer, and then overflows to each mixing tray 104 below layer by layer after the mixing reaction.

[0042] In a specific embodiment, the mixing tray 104 includes a semicircular bottom plate and a side wall, the semicircular bottom plate has an arc-shaped edge and a straight edge, the arc-shaped edge of the semicircular bottom plate is completely matched with the inner wall of the reaction cylinder, and the side wall is vertically arranged on the straight edge of the semicircular bottom plate, so that a stirring chamber is formed between the mixing tray 104 and the inner wall of the reaction cylinder. The semicircular shape of the semicircular bottom plate is greater than one-half of a circle, and preferably, it can be a three-quarter circular plate. Of course, the mixing tray 104 can also be in other forms, as long as the mixing tray 104 has a stirring chamber with an upper opening.

[0043] like Figure 1 As shown, there are no openings on the lower part and the side of the mixing tower plate 104. For example, when the materials are a methanol solution of dimethyl oxalate and a methanol solution of liquid ammonia, the two materials enter the reaction cylinder through the material inlet 105 in turn, flow into the stirring chamber of the mixing tower plate 104 under the action of the anti-impact baffle 106, mix and react under the stirring action of the mixing blade 203, and the mixed reaction materials overflow from the overflow channel on the side of the mixing tower plate 104 and enter the stirring chamber of the next mixing tower plate 104 until finally flowing out of the reaction cylinder through the material outlet 107.

[0044] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0046] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0047] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0048] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A synthesis reactor, characterized in that: include: A reaction cylinder having a material inlet and a material outlet; A stirring device, comprising a driving mechanism, a stirring shaft and a plurality of mixing blades, wherein the driving mechanism is arranged outside the reaction cylinder, one end of the stirring shaft is connected to the output end of the driving mechanism, the other end of the stirring shaft penetrates the reaction cylinder and is inserted into the interior of the reaction cylinder, and a plurality of mixing blades are arranged at intervals at the other end of the stirring shaft; A mixing tower plate, wherein the mixing tower plate has a stirring chamber with an upper opening, the mixing tower plate passes through the stirring shaft, the stirring chamber accommodates at least one mixing blade, and at least part of the side wall of the mixing tower plate and the inner wall of the reaction cylinder have an overflow channel.

2. The synthesis reactor according to claim 1, characterized in that A plurality of mixing tower plates are arranged along the height direction of the stirring shaft.

3. The synthesis reactor according to claim 2, characterized in that: The overflow channels of adjacent mixing tower plates are arranged in a staggered manner.

4. The synthesis reactor according to claim 1, characterized in that The reaction cylinder comprises an upper sealing head and a cylinder, wherein the upper sealing head and the cylinder are buckled together to form a closed cavity, and the upper sealing head and the cylinder are connected via a flange.

5. The synthesis reactor according to claim 4, characterized in that: The material inlet is arranged on the upper side of the cylinder, and the material outlet is arranged on the bottom of the cylinder.

6. The synthesis reactor according to claim 1, characterized in that The reaction cylinder is provided with a gas outlet.

7. The synthesis reactor according to claim 6, characterized in that It also includes a pressure gauge and / or a thermometer connected to the gas outlet of the reaction cylinder.

8. The synthesis reactor according to claim 1, characterized in that An anti-collision baffle is arranged on the inner wall of the reaction cylinder and above the material inlet.

9. The synthesis reactor according to claim 8, characterized in that The anti-collision baffle and the inner wall of the reaction cylinder form a guide channel with an opening facing downward.

10. The synthesis reactor according to claim 1, characterized in that: The mixing tower plate includes a semicircular bottom plate and a side wall, the semicircular bottom plate has an arc-shaped edge and a straight edge, the arc-shaped edge of the semicircular bottom plate is completely matched with the inner wall of the reaction cylinder, and the side wall is vertically arranged on the straight edge of the semicircular bottom plate, so that the mixing tower plate and the inner wall of the reaction cylinder form the stirring chamber.

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